WO1998028455A1 - Metal working drill/endmill blank - Google Patents

Metal working drill/endmill blank Download PDF

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Publication number
WO1998028455A1
WO1998028455A1 PCT/SE1997/002162 SE9702162W WO9828455A1 WO 1998028455 A1 WO1998028455 A1 WO 1998028455A1 SE 9702162 W SE9702162 W SE 9702162W WO 9828455 A1 WO9828455 A1 WO 9828455A1
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WO
WIPO (PCT)
Prior art keywords
core
tube
grade
drill
holes
Prior art date
Application number
PCT/SE1997/002162
Other languages
French (fr)
Inventor
Stephen Foster
Gary Mccarty
Alistair Grearson
Hélène OUCHTERLONY
Original Assignee
Sandvik Ab (Publ)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sandvik Ab (Publ) filed Critical Sandvik Ab (Publ)
Priority to DE69724652T priority Critical patent/DE69724652T2/en
Priority to CA002274262A priority patent/CA2274262C/en
Priority to AT97952151T priority patent/ATE248932T1/en
Priority to EP97952151A priority patent/EP0951576B1/en
Priority to JP52870098A priority patent/JP2001506930A/en
Priority to IL13041297A priority patent/IL130412A/en
Publication of WO1998028455A1 publication Critical patent/WO1998028455A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/27—Cutters, for shaping comprising tool of specific chemical composition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/252—Glass or ceramic [i.e., fired or glazed clay, cement, etc.] [porcelain, quartz, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent

Definitions

  • the present invention relates to a cemented carbide body, preferably a cylindrical body consisting of at least two grades with individually different compositions, microstructures and properties, especially a body aimed at acting as a blank for a drilling, end illing or deburring tool.
  • the present invention relates to a compound cemented carbide body consisting of a core of a tough grade and a surrounding tube of a more wear resistant grade that are both in active contact with the work piece material .
  • the problem when making such a compound body is to avoid the formation of cracks in the outer part or voids and significant porosity at the interface between the two parts due to differences in shrinkage during sintering.
  • too high stresses in the interface make further manufacturing, as e.g. slitting and grinding, impossible.
  • Another problem can be the migration of the binder phase during sintering which results in a leveling of the binder phase content in the two parts.
  • the combination of grades has to fulfil the demands on toughness and wear resistance in the centre as well as in the periphery.
  • the grades also have to be compatible with respect to pressing conditions and sintering conditions.
  • the invention relates to a drill blank with a core of a WC-Co-grade surrounded by a tube of a grade containing also carbides and/or carbonitrides of the elements in group 4-6, preferably Ti, Ta and Nb.
  • Fig. 1 shows in 6X magnification a cross section of a drill blank according to the invention.
  • a - core and B - tube Fig. 2 shows in 200X magnification the diffuse interface between the two grades .
  • Drill blanks according to the invention consist of a core and a surrounding tube.
  • the core contains after sintering in addition to WC ⁇ 30, preferably 5-20, most preferably 10-15 wt-% Co.
  • the tube grade has >5 wt-% Co and 5-25, preferably 8-20 wt-%, most preferably 10-15 wt-% of one or more of the carbides and/or carbonitrides of the elements in group 4-6, preferably Ti , Ta and Nb.
  • the difference in Co content between core and tube is 1- 10 wt-% units, preferably 2-4 wt-% units.
  • the core contains 0.5-2 wt-% cubic carbides.
  • the grain size of the core grade is ⁇ 10 ⁇ m, preferably 0.5-5 ⁇ m, most preferably 0.5-3 ⁇ m.
  • the tube grade has a grain size of ⁇ 10 ⁇ , preferably 0.5-3 ⁇ m, most preferably 0.5-1.5 ⁇ m.
  • Blanks according to the invention are made by powder metallurgical methods including compacting in two steps. First a rod with length around 300 mm and diameter 5-15 mm consisting of 10-30 wt-% Co and rest WC with grain size according to above is pressed. Preferably, this rod has a grooved form which provides a keying action between it and tube. Then the tube of a desired diameter is pressed around the outside of the rod to final green density.
  • the size of the core is preferably 40-60 % of the total diameter of the blank. If desired the drill blank can be provided with coolant holes with methods known in the art.
  • the difference in Co-content between the tube grade and the core grade is 0-15 wt-%, preferably 5-10 wt-% units and the tube contains cubic carbides according to above the blank can be sintered without formation of cracks or voids between the core and the tube .
  • Pressing conditions are determined by thermal expansion coefficient, shrinkage and required pressing pressure for the grades used. It is within the purview of the skilled artisan to determine these conditions by experiments. Sintering shall be performed at 1350-1450 e C.
  • the rods are usually cut into drill blanks of 50-150 mm, preferably 80-120 mm length.
  • the most useful diameter range is 5-35 mm, preferably 5- 20 mm.
  • the flute is ground with for example a diamond wheel at 18-20 m/sec with a feed of 60-80 mm/min.
  • a drill top of length/diameter ratio of 0.5-5.0 is used which is brazed to a shaft.
  • drills of the above mentioned kind are suitable for coating by PVD with carbide, nitride, carbonitride or oxide or combinations thereof, e. g. TiN, TiAlN, Ti(C,N).
  • Drills of this invention are particularly useful for machining in stainless steel and normal steel.
  • Drills according to the invention were produced. Pressing was carried out in two stages. First a cylindrical rod length 300 mm and diameter 11 mm with the composition of 20 wt-% Co and 80 wt-% WC with grain size 2 ⁇ m was pressed. After that a powder with original composition of 11 wt-% Co, 6.1 wt-% TaC, 1,9 wt-% NbC, 4 wt-% TiC and rest WC with grain size 2.5 ⁇ was pressed around the outside of the rod to final green density. Some of the drills were given coolant holes with technique well known in the art.
  • PVD TiN coated drills from Example 1 were tested in stainless steel AISI 316. Single grade drills in the two original grades used in the drills from Example 1 and one fine grained 1 ⁇ m WC- 10 wt-% Co grade normally used in these cutting conditions were used as references .
  • test a the drill according to the invention lasted 357 holes, while the single grade drills were worn out after 207 (single grade fine grained WC-Co), 149 (single grade 11 wt% Co, 12 wt% Ta,Nb,Ti carbides and balance WC) and 55 holes (single grade 20 wt-% Co) respectively .
  • the drill according to the invention and the fine grained grade made 192 holes while the other grades made 126 (single grade 11 wt% Co, 12 wt% Ta,Nb,Ti carbides and balance WC) and 22 holes (single grade 20 wt-% Co) respectively.
  • Drills from Example 1 with internal coolant supply were tested on a different austenitic stainless steel, AISI 304. In this test ordinary P40 and sub-micron K20 drills were used as reference.
  • the drill according to the invention was still working after 2668 holes while the P40 and sub-micron K20 drills were worn out after 2011 and 242 holes respectively.
  • the drill according to the invention completed 520 holes while the P40 and sub-micron K20 drills completed 110 and 22 holes respectively.
  • the drill according to the invention achieved 198 holes, while the P40 and K20 drills broke down after one or two holes .
  • Drills from Example 1 with internal coolant supply holes, but in 10 mm diameter and coated with Ti(C,N) and TiN were tested in AISI 316 (SS2353), 30 mm through hole drilling. In this test an ordinary fine grained PVD coated drill was used as reference. Several cutting data combinations were used, and from the result it is obvious that the drill according to the invention has a much broader working range .
  • the table below shows the number of holes achieved with the drills. The test was stopped after 1300 holes though the drills were not worn out.

Abstract

According to the present invention there is now provided a cemented carbide drill/endmill blank consisting of a core and a surrounding tube with improved technological properties. The difference in Co-content between the core and tube is 1-10 wt.% units and the cubic carbide content is 8-20 wt.% in the tube and 0.5-2 wt.% in the core. The invention also relates to the method of making said cemented carbide drill/end mill blank.

Description

Metal working drill/endmill blank
The present invention relates to a cemented carbide body, preferably a cylindrical body consisting of at least two grades with individually different compositions, microstructures and properties, especially a body aimed at acting as a blank for a drilling, end illing or deburring tool.
In drilling tools the demands on the periphery and on the centre are different with respect to wear resistance and toughness. In drill bits for rock drilling the demands differ between the surface (wear resistance) and the inner part (toughness) as discussed in US 5,541,006, in which is emphasised the use of two grades in a rock drilling bit. The grades are both straight grades with tungsten carbide and Co. Much attention is given to the ability to control the Co migration for which, in this case, an abrupt or discrete change of composition at the interface between the regions is preferred. This problem is also solved by
Fischer et al with the technique known as Dual-Phase or DP-technique, US 4,743,515. Tools as wear parts, rolling rings and slitter/trimming knifes can be manufactured with a method described in US 5,543,235. These patents, though, deal with combinations of grades containing only WC-Co or C-Ni . They also refer to applications where just one of the grades is in contact with the work piece material, and the other serves as an 'equaliser' or 'carrier' of pressure or impact.
One patent dealing with cemented carbide drills containing cubic carbides is US 4,971,485, but in that case the WC-Co grade is used in the shaft to avoid damage due to vibrations emanating from the machine. The present invention relates to a compound cemented carbide body consisting of a core of a tough grade and a surrounding tube of a more wear resistant grade that are both in active contact with the work piece material . The problem when making such a compound body is to avoid the formation of cracks in the outer part or voids and significant porosity at the interface between the two parts due to differences in shrinkage during sintering. In addition, too high stresses in the interface make further manufacturing, as e.g. slitting and grinding, impossible. Another problem can be the migration of the binder phase during sintering which results in a leveling of the binder phase content in the two parts. The combination of grades has to fulfil the demands on toughness and wear resistance in the centre as well as in the periphery. The grades also have to be compatible with respect to pressing conditions and sintering conditions.
According to the invention it has been found possible that by a proper choice of composition and microstructure of the two grades the above mentioned problems can be avoided. More particularly the invention relates to a drill blank with a core of a WC-Co-grade surrounded by a tube of a grade containing also carbides and/or carbonitrides of the elements in group 4-6, preferably Ti, Ta and Nb.
Fig. 1 shows in 6X magnification a cross section of a drill blank according to the invention. In this figure A - core and B - tube . Fig. 2 shows in 200X magnification the diffuse interface between the two grades .
Drill blanks according to the invention consist of a core and a surrounding tube. The core contains after sintering in addition to WC <30, preferably 5-20, most preferably 10-15 wt-% Co. The tube grade has >5 wt-% Co and 5-25, preferably 8-20 wt-%, most preferably 10-15 wt-% of one or more of the carbides and/or carbonitrides of the elements in group 4-6, preferably Ti , Ta and Nb. The difference in Co content between core and tube is 1- 10 wt-% units, preferably 2-4 wt-% units. There is a 300-500 μm wide transition zone measured as change in Co-content by microprobe analysis. The core contains 0.5-2 wt-% cubic carbides.
The grain size of the core grade is <10 μm, preferably 0.5-5 μm, most preferably 0.5-3 μm. The tube grade has a grain size of <10 μ , preferably 0.5-3 μm, most preferably 0.5-1.5 μm.
Blanks according to the invention are made by powder metallurgical methods including compacting in two steps. First a rod with length around 300 mm and diameter 5-15 mm consisting of 10-30 wt-% Co and rest WC with grain size according to above is pressed. Preferably, this rod has a grooved form which provides a keying action between it and tube. Then the tube of a desired diameter is pressed around the outside of the rod to final green density. The size of the core is preferably 40-60 % of the total diameter of the blank. If desired the drill blank can be provided with coolant holes with methods known in the art. It has been found that if the difference in Co-content between the tube grade and the core grade is 0-15 wt-%, preferably 5-10 wt-% units and the tube contains cubic carbides according to above the blank can be sintered without formation of cracks or voids between the core and the tube .
The pressing and sintering properties of the original grade powders are of utmost importance to get a good result. Pressing conditions are determined by thermal expansion coefficient, shrinkage and required pressing pressure for the grades used. It is within the purview of the skilled artisan to determine these conditions by experiments. Sintering shall be performed at 1350-1450eC.
After sintering, the rods are usually cut into drill blanks of 50-150 mm, preferably 80-120 mm length. The most useful diameter range is 5-35 mm, preferably 5- 20 mm.
The flute is ground with for example a diamond wheel at 18-20 m/sec with a feed of 60-80 mm/min. In an alternative embodiment a drill top of length/diameter ratio of 0.5-5.0 is used which is brazed to a shaft.
After finish grinding, drills of the above mentioned kind are suitable for coating by PVD with carbide, nitride, carbonitride or oxide or combinations thereof, e. g. TiN, TiAlN, Ti(C,N).
Drills of this invention are particularly useful for machining in stainless steel and normal steel.
Example 1
Drills according to the invention were produced. Pressing was carried out in two stages. First a cylindrical rod length 300 mm and diameter 11 mm with the composition of 20 wt-% Co and 80 wt-% WC with grain size 2 μm was pressed. After that a powder with original composition of 11 wt-% Co, 6.1 wt-% TaC, 1,9 wt-% NbC, 4 wt-% TiC and rest WC with grain size 2.5 μ was pressed around the outside of the rod to final green density. Some of the drills were given coolant holes with technique well known in the art. After sintering the Co content of the core grade had decreased from 20 to 14 wt-% and the Co content in the tube grade had increased to 12 wt-%. In addition, significant amounts of the cubic carbides could be detected in the centre of the core . After sintering the rods were cut into drill blanks of 105 mm length and 14 mm in diameter. The flute and top and bottom of the blanks were ground to final appearance .
Example 2
PVD TiN coated drills from Example 1 were tested in stainless steel AISI 316. Single grade drills in the two original grades used in the drills from Example 1 and one fine grained 1 μm WC- 10 wt-% Co grade normally used in these cutting conditions were used as references .
Following three test data were used with external cooling : a)v= 50 m/min, f=0.14 mm/rev b)v= 82 m/min, f=0.12 mm/rev c)v= 32 m/min, f=0.22 mm/rev
In test a) the drill according to the invention lasted 357 holes, while the single grade drills were worn out after 207 (single grade fine grained WC-Co), 149 (single grade 11 wt% Co, 12 wt% Ta,Nb,Ti carbides and balance WC) and 55 holes (single grade 20 wt-% Co) respectively .
At higher speed b) the drill according to the invention and the fine grained grade made 192 holes while the other grades made 126 (single grade 11 wt% Co, 12 wt% Ta,Nb,Ti carbides and balance WC) and 22 holes (single grade 20 wt-% Co) respectively.
At lower speed with higher feed c) the result was 179 holes for the drill according to the invention while the fine grained grade made 128 and the 20 wt-% Co grade made 41 holes before they were stopped because of cracks or wear . Example 3
Drills from Example 1 with internal coolant supply were tested in stainless steel. In this test an ordinary P40 drill was used as reference. At increased speed (100 m/min, f=0.16 mm/rev) the drill according to the invention managed 550 holes while the P40 reference drill was totally broken down after only three holes .
At normal speed but a higher feed (50 m/min, f=0.25 mm/rev) the P40 drill suffered from chipping after 660 holes and the drill according to the invention was taken out still working after 1100 holes.
At ordinary cutting data (50 m/min, f=0.16 mm/rev) the two drills were equal in performance and the test was interrupted after 1100 holes.
Example 4
Drills from Example 1 with internal coolant supply were tested on a different austenitic stainless steel, AISI 304. In this test ordinary P40 and sub-micron K20 drills were used as reference.
At normal speed (50 m/min, f=0.16 mm/rev) the drill according to the invention was still working after 2668 holes while the P40 and sub-micron K20 drills were worn out after 2011 and 242 holes respectively.
At increased feed but normal speed (50 m/min, f=0.30 mm/rev) the drill according to the invention completed 520 holes while the P40 and sub-micron K20 drills completed 110 and 22 holes respectively. At increased speed (100 m/min, f=0.16 mm/rev) the drill according to the invention achieved 198 holes, while the P40 and K20 drills broke down after one or two holes . Example 5
Drills from Example 1 with internal coolant supply holes, but in 10 mm diameter and coated with Ti(C,N) and TiN were tested in AISI 316 (SS2353), 30 mm through hole drilling. In this test an ordinary fine grained PVD coated drill was used as reference. Several cutting data combinations were used, and from the result it is obvious that the drill according to the invention has a much broader working range .
The table below shows the number of holes achieved with the drills. The test was stopped after 1300 holes though the drills were not worn out.
Figure imgf000009_0001

Claims

Claims
1. A cemented carbide drill/endmill blank consisting of a core of one grade and a surrounding tube of another grade c h a r a c t e r i s e d by a difference in Co-content between the core and tube of 1- 10 wt-% units and by cubic carbide content of 8-20 wt-% in the tube and 0.5-2 wt-% in the core.
2. Method of making a cemented carbide drill/endmill blank consisting of a core of one grade and a surrounding tube of another grade by powder metallurgical methods including compacting in two steps first the core and then the tube c h a r a c t e r i s e d in using for the core a powder consisting of 10-30 wt-% Co and rest WC and in using for the tube a powder with >5 wt-% Co and 5-25 wt-% cubic carbides in addition to WC whereby the difference in Co- content between the core powder and the tube powder is 5-15 wt-% units.
PCT/SE1997/002162 1996-12-20 1997-12-18 Metal working drill/endmill blank WO1998028455A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE69724652T DE69724652T2 (en) 1996-12-20 1997-12-18 DRILL OR MILLING ROLLING
CA002274262A CA2274262C (en) 1996-12-20 1997-12-18 Metal working drill/endmill blank
AT97952151T ATE248932T1 (en) 1996-12-20 1997-12-18 DRILL OR CUTTER BLANK
EP97952151A EP0951576B1 (en) 1996-12-20 1997-12-18 Drill or endmill blank
JP52870098A JP2001506930A (en) 1996-12-20 1997-12-18 Drill and end mill blanks for metal working
IL13041297A IL130412A (en) 1996-12-20 1997-12-18 Cemented carbide drill and a method for making the same

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9604779A SE510763C2 (en) 1996-12-20 1996-12-20 Topic for a drill or a metal cutter for machining
SE9604779-0 1996-12-20
US08/993,243 US6086980A (en) 1996-12-20 1997-12-18 Metal working drill/endmill blank and its method of manufacture

Publications (1)

Publication Number Publication Date
WO1998028455A1 true WO1998028455A1 (en) 1998-07-02

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Country Status (4)

Country Link
US (1) US6086980A (en)
EP (1) EP0951576B1 (en)
SE (1) SE510763C2 (en)
WO (1) WO1998028455A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1065021A1 (en) * 1999-07-02 2001-01-03 Seco Tools Ab Tool, method and device for manufacturing a tool
EP1066901A2 (en) * 1999-07-02 2001-01-10 Seco Tools Ab Tool for chip removing machining
EP1244531A1 (en) * 1999-12-14 2002-10-02 TDY Industries, Inc. Composite rotary tool and tool fabrication method
US6669414B1 (en) 1999-06-03 2003-12-30 Seco Tools Ab Method and a device for manufacturing a tool and a tool made by the method
EP1452257A2 (en) * 1999-10-14 2004-09-01 Seco Tools Ab Tool for rotary chip removal and a tool tip
WO2004108334A1 (en) 2003-06-04 2004-12-16 Seco Tools Ab Rotatable tool and a blank
WO2007001870A3 (en) * 2005-06-27 2007-05-10 Tdy Ind Inc Composite article with coolant channels and tool fabrication method
US7427310B2 (en) 2003-12-15 2008-09-23 Sandvik Intellectual Property Ab Cemented carbide tools for mining and construction applications and method of making same
US7449043B2 (en) 2003-12-15 2008-11-11 Sandvik Intellectual Property Aktiebolag Cemented carbide tool and method of making the same
US7687156B2 (en) 2005-08-18 2010-03-30 Tdy Industries, Inc. Composite cutting inserts and methods of making the same
US8007922B2 (en) 2006-10-25 2011-08-30 Tdy Industries, Inc Articles having improved resistance to thermal cracking
US8025112B2 (en) 2008-08-22 2011-09-27 Tdy Industries, Inc. Earth-boring bits and other parts including cemented carbide
US8091459B2 (en) 2003-07-28 2012-01-10 Sandvik Intellectual Property Aktiebolag Method and apparatus for making a rotary tool for chip removing machining
US8221517B2 (en) 2008-06-02 2012-07-17 TDY Industries, LLC Cemented carbide—metallic alloy composites
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US8277959B2 (en) 2008-11-11 2012-10-02 Sandvik Intellectual Property Ab Cemented carbide body and method
US8308096B2 (en) 2009-07-14 2012-11-13 TDY Industries, LLC Reinforced roll and method of making same
US8312941B2 (en) 2006-04-27 2012-11-20 TDY Industries, LLC Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods
US8322465B2 (en) 2008-08-22 2012-12-04 TDY Industries, LLC Earth-boring bit parts including hybrid cemented carbides and methods of making the same
US8596935B2 (en) 2010-10-08 2013-12-03 TDY Industries, LLC Cutting tools and cutting inserts including internal cooling
US8790439B2 (en) 2008-06-02 2014-07-29 Kennametal Inc. Composite sintered powder metal articles
US8800848B2 (en) 2011-08-31 2014-08-12 Kennametal Inc. Methods of forming wear resistant layers on metallic surfaces
US9016406B2 (en) 2011-09-22 2015-04-28 Kennametal Inc. Cutting inserts for earth-boring bits
US9180650B2 (en) 2010-10-08 2015-11-10 Kennametal Inc. Cutting tool including an internal coolant system and fastener for a cutting tool including an internal coolant system
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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US6527165B1 (en) * 2000-03-24 2003-03-04 General Electric Company Method of making an environmental resistant brazed assembly including a wear resistant surface portion
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SE522845C2 (en) 2000-11-22 2004-03-09 Sandvik Ab Ways to make a cutter composed of different types of cemented carbide
JP2003251503A (en) * 2001-12-26 2003-09-09 Sumitomo Electric Ind Ltd Surface covering cutting tool
US7147939B2 (en) * 2003-02-27 2006-12-12 Kennametal Inc. Coated carbide tap
US7384443B2 (en) * 2003-12-12 2008-06-10 Tdy Industries, Inc. Hybrid cemented carbide composites
SE527679C2 (en) * 2004-01-26 2006-05-09 Sandvik Intellectual Property Carbide body, especially spiral drill, and its use for rotary metalworking tools
US20050227772A1 (en) * 2004-04-13 2005-10-13 Edward Kletecka Powdered metal multi-lobular tooling and method of fabrication
US20050211475A1 (en) 2004-04-28 2005-09-29 Mirchandani Prakash K Earth-boring bits
US9428822B2 (en) 2004-04-28 2016-08-30 Baker Hughes Incorporated Earth-boring tools and components thereof including material having hard phase in a metallic binder, and metallic binder compositions for use in forming such tools and components
US20080101977A1 (en) * 2005-04-28 2008-05-01 Eason Jimmy W Sintered bodies for earth-boring rotary drill bits and methods of forming the same
US20060024140A1 (en) * 2004-07-30 2006-02-02 Wolff Edward C Removable tap chasers and tap systems including the same
US7513320B2 (en) * 2004-12-16 2009-04-07 Tdy Industries, Inc. Cemented carbide inserts for earth-boring bits
US7776256B2 (en) * 2005-11-10 2010-08-17 Baker Huges Incorporated Earth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies
US8002052B2 (en) 2005-09-09 2011-08-23 Baker Hughes Incorporated Particle-matrix composite drill bits with hardfacing
US7997359B2 (en) 2005-09-09 2011-08-16 Baker Hughes Incorporated Abrasive wear-resistant hardfacing materials, drill bits and drilling tools including abrasive wear-resistant hardfacing materials
US7597159B2 (en) 2005-09-09 2009-10-06 Baker Hughes Incorporated Drill bits and drilling tools including abrasive wear-resistant materials
US7703555B2 (en) 2005-09-09 2010-04-27 Baker Hughes Incorporated Drilling tools having hardfacing with nickel-based matrix materials and hard particles
US7802495B2 (en) * 2005-11-10 2010-09-28 Baker Hughes Incorporated Methods of forming earth-boring rotary drill bits
US7784567B2 (en) 2005-11-10 2010-08-31 Baker Hughes Incorporated Earth-boring rotary drill bits including bit bodies comprising reinforced titanium or titanium-based alloy matrix materials, and methods for forming such bits
US7807099B2 (en) 2005-11-10 2010-10-05 Baker Hughes Incorporated Method for forming earth-boring tools comprising silicon carbide composite materials
US7913779B2 (en) 2005-11-10 2011-03-29 Baker Hughes Incorporated Earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials, and methods for forming such bits
US8770324B2 (en) 2008-06-10 2014-07-08 Baker Hughes Incorporated Earth-boring tools including sinterbonded components and partially formed tools configured to be sinterbonded
RU2009111383A (en) 2006-08-30 2010-10-10 Бейкер Хьюз Инкорпорейтед (Us) METHODS FOR APPLICATION OF WEAR-RESISTANT MATERIAL ON EXTERNAL SURFACES OF DRILLING TOOLS AND RELATED DESIGNS
US8272295B2 (en) * 2006-12-07 2012-09-25 Baker Hughes Incorporated Displacement members and intermediate structures for use in forming at least a portion of bit bodies of earth-boring rotary drill bits
US7775287B2 (en) 2006-12-12 2010-08-17 Baker Hughes Incorporated Methods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods
US7841259B2 (en) * 2006-12-27 2010-11-30 Baker Hughes Incorporated Methods of forming bit bodies
DE102007006943A1 (en) * 2007-02-13 2008-08-14 Robert Bosch Gmbh Cutting element for a rock drill and a method for producing a cutting element for a rock drill
US20080202814A1 (en) * 2007-02-23 2008-08-28 Lyons Nicholas J Earth-boring tools and cutter assemblies having a cutting element co-sintered with a cone structure, methods of using the same
US7846551B2 (en) 2007-03-16 2010-12-07 Tdy Industries, Inc. Composite articles
US7703556B2 (en) 2008-06-04 2010-04-27 Baker Hughes Incorporated Methods of attaching a shank to a body of an earth-boring tool including a load-bearing joint and tools formed by such methods
US8261632B2 (en) 2008-07-09 2012-09-11 Baker Hughes Incorporated Methods of forming earth-boring drill bits
EP2221131A1 (en) 2009-05-29 2010-08-25 Sandvik Intellectual Property AB Methods of producing a powder compact and a sintered composite body
US8201610B2 (en) 2009-06-05 2012-06-19 Baker Hughes Incorporated Methods for manufacturing downhole tools and downhole tool parts
US8978734B2 (en) 2010-05-20 2015-03-17 Baker Hughes Incorporated Methods of forming at least a portion of earth-boring tools, and articles formed by such methods
CN102985197A (en) 2010-05-20 2013-03-20 贝克休斯公司 Methods of forming at least a portion of earth-boring tools, and articles formed by such methods
EP2571646A4 (en) 2010-05-20 2016-10-05 Baker Hughes Inc Methods of forming at least a portion of earth-boring tools
CN103449111B (en) * 2013-09-12 2015-07-15 河南省煤科院耐磨技术有限公司 Processing method for wear-resisting reversed loader convex groove
CN111088449B (en) * 2020-01-02 2022-02-01 四川轻化工大学 Double-crystal WC structure hard alloy and preparation method thereof
CN114289721A (en) * 2022-01-06 2022-04-08 温州宏丰合金有限公司 Sandwich alloy bar and manufacturing method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2017153A (en) * 1978-03-13 1979-10-03 Krupp Gmbh Method of Producing Composite Hard Metal Bodies
US4705124A (en) * 1986-08-22 1987-11-10 Minnesota Mining And Manufacturing Company Cutting element with wear resistant crown
US4971485A (en) * 1989-01-26 1990-11-20 Sumitomo Electric Industries, Ltd. Cemented carbide drill
US5467669A (en) * 1993-05-03 1995-11-21 American National Carbide Company Cutting tool insert
US5543235A (en) * 1994-04-26 1996-08-06 Sintermet Multiple grade cemented carbide articles and a method of making the same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6137C (en) * E. W. DlTTMANN in Leipzig, Südstrafse 6 Iron oven with fixed enamelled baking plate and combined steam and direct heating
FR977873A (en) * 1947-12-19 1951-04-06 Skoda Ets Sintered hard metal castings and process for their manufacture
EP0182759B2 (en) * 1984-11-13 1993-12-15 Santrade Ltd. Cemented carbide body used preferably for rock drilling and mineral cutting
US5145739A (en) * 1990-07-12 1992-09-08 Sarin Vinod K Abrasion resistant coated articles
US5541006A (en) * 1994-12-23 1996-07-30 Kennametal Inc. Method of making composite cermet articles and the articles
US5679445A (en) * 1994-12-23 1997-10-21 Kennametal Inc. Composite cermet articles and method of making
US5780139A (en) * 1996-09-18 1998-07-14 Rogers Tool Works, Inc. Multi-layer anvil for ultra high pressure presses
GB2440555A (en) * 2006-07-31 2008-02-06 Quetra Ltd Acoustic testing of wooden elements

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2017153A (en) * 1978-03-13 1979-10-03 Krupp Gmbh Method of Producing Composite Hard Metal Bodies
US4705124A (en) * 1986-08-22 1987-11-10 Minnesota Mining And Manufacturing Company Cutting element with wear resistant crown
US4971485A (en) * 1989-01-26 1990-11-20 Sumitomo Electric Industries, Ltd. Cemented carbide drill
US5467669A (en) * 1993-05-03 1995-11-21 American National Carbide Company Cutting tool insert
US5543235A (en) * 1994-04-26 1996-08-06 Sintermet Multiple grade cemented carbide articles and a method of making the same

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7101167B2 (en) 1999-06-03 2006-09-05 Seco Tools Ab Method and a device for manufacturing a tool and a tool made by the method
US6669414B1 (en) 1999-06-03 2003-12-30 Seco Tools Ab Method and a device for manufacturing a tool and a tool made by the method
EP1066901A2 (en) * 1999-07-02 2001-01-10 Seco Tools Ab Tool for chip removing machining
US6402439B1 (en) 1999-07-02 2002-06-11 Seco Tools Ab Tool for chip removal machining
US6450739B1 (en) 1999-07-02 2002-09-17 Seco Tools Ab Tool for chip removing machining and methods and apparatus for making the tool
EP1065021A1 (en) * 1999-07-02 2001-01-03 Seco Tools Ab Tool, method and device for manufacturing a tool
EP1066901A3 (en) * 1999-07-02 2003-09-03 Seco Tools Ab Tool for chip removing machining
EP1452257A3 (en) * 1999-10-14 2004-11-24 Seco Tools Ab Tool for rotary chip removal and a tool tip
EP1452257A2 (en) * 1999-10-14 2004-09-01 Seco Tools Ab Tool for rotary chip removal and a tool tip
EP1244531A1 (en) * 1999-12-14 2002-10-02 TDY Industries, Inc. Composite rotary tool and tool fabrication method
EP1244531A4 (en) * 1999-12-14 2003-01-29 Tdy Ind Inc Composite rotary tool and tool fabrication method
KR100749994B1 (en) 1999-12-14 2007-08-16 티디와이 인더스트리스, 인코포레이티드 Composite rotary tool and tool fabrication method
WO2004108334A1 (en) 2003-06-04 2004-12-16 Seco Tools Ab Rotatable tool and a blank
US7371344B2 (en) 2003-06-04 2008-05-13 Seco Tools Ab Method and apparatus for manufacturing a blank for a rotary cutting tool
US8091459B2 (en) 2003-07-28 2012-01-10 Sandvik Intellectual Property Aktiebolag Method and apparatus for making a rotary tool for chip removing machining
US7427310B2 (en) 2003-12-15 2008-09-23 Sandvik Intellectual Property Ab Cemented carbide tools for mining and construction applications and method of making same
US7449043B2 (en) 2003-12-15 2008-11-11 Sandvik Intellectual Property Aktiebolag Cemented carbide tool and method of making the same
US7678327B2 (en) 2003-12-15 2010-03-16 Sandvik Intellectual Property Aktiebolag Cemented carbide tools for mining and construction applications and method of making same
US7708936B2 (en) 2003-12-15 2010-05-04 Sandvik Intellectual Property Aktiebolag Cemented carbide tool and method of making the same
WO2007001870A3 (en) * 2005-06-27 2007-05-10 Tdy Ind Inc Composite article with coolant channels and tool fabrication method
US8808591B2 (en) 2005-06-27 2014-08-19 Kennametal Inc. Coextrusion fabrication method
US8637127B2 (en) 2005-06-27 2014-01-28 Kennametal Inc. Composite article with coolant channels and tool fabrication method
US8318063B2 (en) 2005-06-27 2012-11-27 TDY Industries, LLC Injection molding fabrication method
KR101353171B1 (en) 2005-06-27 2014-01-17 티디와이 인더스트리스, 엘엘씨 Composite article with coolant channels and tool fabrication method
US8647561B2 (en) 2005-08-18 2014-02-11 Kennametal Inc. Composite cutting inserts and methods of making the same
US7687156B2 (en) 2005-08-18 2010-03-30 Tdy Industries, Inc. Composite cutting inserts and methods of making the same
US8312941B2 (en) 2006-04-27 2012-11-20 TDY Industries, LLC Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods
US8789625B2 (en) 2006-04-27 2014-07-29 Kennametal Inc. Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods
US8841005B2 (en) 2006-10-25 2014-09-23 Kennametal Inc. Articles having improved resistance to thermal cracking
US8697258B2 (en) 2006-10-25 2014-04-15 Kennametal Inc. Articles having improved resistance to thermal cracking
US8007922B2 (en) 2006-10-25 2011-08-30 Tdy Industries, Inc Articles having improved resistance to thermal cracking
US8221517B2 (en) 2008-06-02 2012-07-17 TDY Industries, LLC Cemented carbide—metallic alloy composites
US8790439B2 (en) 2008-06-02 2014-07-29 Kennametal Inc. Composite sintered powder metal articles
US8025112B2 (en) 2008-08-22 2011-09-27 Tdy Industries, Inc. Earth-boring bits and other parts including cemented carbide
US8858870B2 (en) 2008-08-22 2014-10-14 Kennametal Inc. Earth-boring bits and other parts including cemented carbide
US8225886B2 (en) 2008-08-22 2012-07-24 TDY Industries, LLC Earth-boring bits and other parts including cemented carbide
US8322465B2 (en) 2008-08-22 2012-12-04 TDY Industries, LLC Earth-boring bit parts including hybrid cemented carbides and methods of making the same
US8459380B2 (en) 2008-08-22 2013-06-11 TDY Industries, LLC Earth-boring bits and other parts including cemented carbide
US8475710B2 (en) 2008-11-11 2013-07-02 Sandvik Intellectual Property Ab Cemented carbide body and method
US8277959B2 (en) 2008-11-11 2012-10-02 Sandvik Intellectual Property Ab Cemented carbide body and method
US8272816B2 (en) 2009-05-12 2012-09-25 TDY Industries, LLC Composite cemented carbide rotary cutting tools and rotary cutting tool blanks
US9435010B2 (en) 2009-05-12 2016-09-06 Kennametal Inc. Composite cemented carbide rotary cutting tools and rotary cutting tool blanks
US8308096B2 (en) 2009-07-14 2012-11-13 TDY Industries, LLC Reinforced roll and method of making same
US9643236B2 (en) 2009-11-11 2017-05-09 Landis Solutions Llc Thread rolling die and method of making same
US8596935B2 (en) 2010-10-08 2013-12-03 TDY Industries, LLC Cutting tools and cutting inserts including internal cooling
US9180650B2 (en) 2010-10-08 2015-11-10 Kennametal Inc. Cutting tool including an internal coolant system and fastener for a cutting tool including an internal coolant system
US8800848B2 (en) 2011-08-31 2014-08-12 Kennametal Inc. Methods of forming wear resistant layers on metallic surfaces
US9016406B2 (en) 2011-09-22 2015-04-28 Kennametal Inc. Cutting inserts for earth-boring bits

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SE9604779D0 (en) 1996-12-20
SE510763C2 (en) 1999-06-21
EP0951576A1 (en) 1999-10-27

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