CN105154745A - High strength alloy cutter head and preparation method thereof - Google Patents
High strength alloy cutter head and preparation method thereof Download PDFInfo
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- CN105154745A CN105154745A CN201510561690.2A CN201510561690A CN105154745A CN 105154745 A CN105154745 A CN 105154745A CN 201510561690 A CN201510561690 A CN 201510561690A CN 105154745 A CN105154745 A CN 105154745A
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Abstract
The invention discloses a high strength alloy cutter head. The alloy cutter head comprises the following components in percentage by weight:82.58-82.88% of tungsten carbide,0.72-0.75% of tantalum carbide,3.54-6.56% of chromium,0.25-0.28% of silicon,1.24-1.26% of nickel,0.82-0.85% of vanadium,0.02-0.04% of niobium, 0.52-0.55% of titanium,3.21-3.25% of composite rare earth and the balance being molybdenum, wherein the composite rare earth comprises the following components in percentage by weight:12-14% of lanthanum,7-11% of cerium,3-5% of praseodymium,22-25% of neodymium,4-8% of promethium,12-14% of samarium,8-12% of gadolinium and the balance being lutetium. The invention further provides a preparation method of the high strength alloy cutter head.
Description
Technical field
The present invention relates to alloy cutter head, specifically a kind of high-strength alloy cutter head and preparation method thereof.
Background technology
At present along with the speed of machining industry develops, a large amount of workpiece needs processing treatment, because cutter head is rapid wear product, consume very large, and the cost of cutter head is high, the especially cutter head of some special substances, price is very expensive, huge production cost is brought to enterprise, and existing cutter head intensity is low, quick abrasion, and work-ing life is short, easy fracture, can not meet the existing market requirement.
Summary of the invention
Technical problem to be solved by this invention is, for the shortcoming of above prior art, a kind of high-strength alloy cutter head and preparation method thereof is proposed, not only intensity is high for this high-strength alloy cutter head, and wear resisting property and resistance to elevated temperatures very outstanding, reduce the abrasion loss of cutter head, improve the quality of cutting surface, improve the work-ing life of cutter head, reduce costs, save material, and cost is low, thing is cheap beautiful, this preparation method provided, simple to operate, can not only cut down finished cost, shorten the process-cycle, and can increase work efficiency, improve the quality of product.
In order to solve the problems of the technologies described above, technical scheme of the present invention is achieved in the following ways: a kind of high-strength alloy cutter head, and the component of alloy cutter head is by mass percentage: wolfram varbide: 82.58-82.88%, tantalum carbide: 0.72-0.75%, chromium: 3.54-6.56%, silicon: 0.25-0.28%, nickel: 1.24-1.26%, vanadium: 0.82-0.85%, niobium: 0.02-0.04%, titanium 0.52-0.55%, compound rare-earth: 3.21-3.25%, surplus is molybdenum;
Wherein the component of compound rare-earth is by mass percentage: lanthanum: 12-14%, cerium: 7-11%, praseodymium: 3-5%, neodymium: 22-25%, promethium: 4-8%, samarium: 12-14%, gadolinium: 8-12%, and surplus is lutetium.
Present invention also offers a kind of preparation method of high-strength alloy cutter head, this preparation method carries out according to the following steps:
Step (1): first wolfram varbide, tantalum carbide are put into reactor and be heated to 2200-2300 DEG C, insulation 1-3h, then 1500-1600 DEG C is cooled the temperature to, then chromium, silicon, nickel, v element is added successively to reactor, and stir, pass into nitrogen as shielding gas at whipping process to reactor, stirring velocity is 300-500r/min, and churning time is: 30-50min;
Step (2): continue after completing steps 1 to add niobium, titanium, compound rare-earth, molybdenum element to reactor, then 1200-1250 DEG C is cooled the temperature to, then continue in reactor, pass into nitrogen and stir, stirring velocity: 450-600r/min, churning time is 1-2h;
Step (3): then reactor is heated to 1450-1550 DEG C, insulation 3-5h, flows into die cast in blade grinding tool by the liquid in reactor, and is processed by the alloy cutter head blank after shaping, obtain alloy cutter head;
Step (4): the alloy cutter head after processing in step 3 is heat-treated: first alloy cutter head is heated to 300-350 DEG C, insulation 20-30min, and then with the heating rate of 3-5 DEG C/s to 920-980 DEG C, insulation 5-8h, then water-cooled is adopted, reduce 620-650 DEG C with the speed of cooling of 10-12 DEG C/s, insulation 20-30min, and then adopt oil cooling, 340-360 DEG C is down to 7-9 DEG C/s oil cooling speed, insulation 1-2h, finally adopts air-cooled, is cooled to room temperature with the speed of 5-7 DEG C/s;
Step (5): cleaned by the alloy cutter head warm water after step 4 thermal treatment, then dry up, then at its surface smear one deck slushing oil, finally packs.
The technical scheme that the present invention limits further is:
Aforesaid high-strength alloy cutter head, the component of alloy cutter head is by mass percentage: wolfram varbide: 82.58%, tantalum carbide: 0.72%, chromium: 3.54%, silicon: 0.25%, nickel: 1.24%, vanadium: 0.82%, niobium: 0.02%, titanium 0.52%, compound rare-earth: 3.21%, surplus is molybdenum;
Wherein the component of compound rare-earth is by mass percentage: lanthanum: 12%, cerium: 7%, praseodymium: 3%, neodymium: 22%, promethium: 4%, samarium: 12%, gadolinium: 8%, and surplus is lutetium.
Aforesaid high-strength alloy cutter head, the component of alloy cutter head is by mass percentage: wolfram varbide: 82.88%, tantalum carbide: 0.75%, chromium: 3.56%, silicon: 0.28%, nickel: 1.26%, vanadium: 0.85%, niobium: 0.04%, titanium 0.55%, compound rare-earth: 3.25%, surplus is molybdenum;
Wherein the component of compound rare-earth is by mass percentage: lanthanum: 14%, cerium: 11%, praseodymium: 5%, neodymium: 25%, promethium: 8%, samarium: 14%, gadolinium: 12%, and surplus is lutetium.
Aforesaid high-strength alloy cutter head, the component of alloy cutter head is by mass percentage: wolfram varbide: 82.68%, tantalum carbide: 0.74%, chromium: 3.55%, silicon: 0.27%, nickel: 1.25%, vanadium: 0.84%, niobium: 0.03%, titanium 0.54%, compound rare-earth: 3.24%, surplus is molybdenum;
Wherein the component of compound rare-earth is by mass percentage: lanthanum: 13%, cerium: 10%, praseodymium: 4%, neodymium: 24%, promethium: 7%, samarium: 13%, gadolinium: 11%, and surplus is lutetium.
The invention has the beneficial effects as follows: in this high-strength alloy cutter head, principal element is wolfram varbide, and add niobium element, niobium energy crystal grain thinning and reduce the superheated susceptivity of cutter and temper brittleness, improves intensity, can improve resistant to hydrogen, nitrogen, ammonia corrosion ability under weather-resistant and high temperature; Vanadium can play the effect of reductor, the intensity of nickel energy cutter lifting head, and keeps good plasticity and toughness, nickel and chromium have higher corrosion resistance to soda acid, at high temperature there is antirust and temperature capacity, add compactness and hot rolling performance that silicon just can improve cutter, improve intensity; And add the rare earth elements such as lanthanum, cerium, praseodymium, neodymium, promethium, energy crystal grain thinning, forms fine and close grain structure, improves intensity and the wear resisting property of cutter, improves cutting-tool's used life, reduce costs,
In component, wolfram varbide accounts for about 80%, and due to wolfram varbide price, all the other components adopt the elements such as chromium, silicon, nickel, vanadium, about 90% is accounted for relative to wolfram varbide in existing cutter head, reduce the usage quantity of wolfram varbide, and obtain good mechanical property, cost-saving;
And provide the preparation method of high-strength alloy cutter head; the method is simple; easy to operate; stir time by nitrogen as shielding gas; substantially reduce the impact of air; avoid producing pore in the process of cutter die cast; thus form fine and close tissue; improve its intensity, alloy cutter head is when thermal treatment simultaneously, successively adopts water-cooled, oil cooling and air-cooled means to lower the temperature to it; greatly improve its intensity; increase its wear resistance, resistance to elevated temperatures, improve the work-ing life of alloy cutter head, reduce costs.
Embodiment
The present invention is described in further detail below:
embodiment 1
The present embodiment provides a kind of high-strength alloy cutter head, and the component of alloy cutter head is by mass percentage: wolfram varbide: 82.58%, tantalum carbide: 0.72%, chromium: 3.54%, silicon: 0.25%, nickel: 1.24%, vanadium: 0.82%, niobium: 0.02%, titanium 0.52%, compound rare-earth: 3.21%, surplus is molybdenum;
Wherein the component of compound rare-earth is by mass percentage: lanthanum: 12%, cerium: 7%, praseodymium: 3%, neodymium: 22%, promethium: 4%, samarium: 12%, gadolinium: 8%, and surplus is lutetium; This embodiment still provides the preparation method of high-strength alloy cutter head:
Step (1): first wolfram varbide, tantalum carbide are put into reactor and be heated to 2200 DEG C, insulation 1h, then 1500 DEG C are cooled the temperature to, then chromium, silicon, nickel, v element is added successively to reactor, and stir, pass into nitrogen as shielding gas at whipping process to reactor, stirring velocity is 300r/min, and churning time is: 30min;
Step (2): continue after completing steps 1 to add niobium, titanium, compound rare-earth, molybdenum element to reactor, then cool the temperature to 1200 DEG C, then continue pass into nitrogen and stir in reactor, stirring velocity: 450r/min, churning time is 1h;
Step (3): then reactor is heated to 1450 DEG C, insulation 3h, flows into die cast in blade grinding tool by the liquid in reactor, and is processed by the alloy cutter head blank after shaping, obtain alloy cutter head;
Step (4): the alloy cutter head after processing in step 3 is heat-treated: first alloy cutter head is heated to 300 DEG C, insulation 20min, and then with the heating rate to 920 DEG C of 3 DEG C/s, insulation 5h, then water-cooled is adopted, reduce by 620 DEG C with the speed of cooling of 10 DEG C/s, insulation 20min, and then adopt oil cooling, 340 DEG C are down to 7 DEG C/s oil cooling speed, insulation 1h, finally adopts air-cooled, is cooled to room temperature with the speed of 5 DEG C/s;
Step (5): cleaned by the alloy cutter head warm water after step 4 thermal treatment, then dry up, then at its surface smear one deck slushing oil, finally packs.
embodiment 2
The present embodiment provides a kind of high-strength alloy cutter head, and the component of alloy cutter head is by mass percentage: wolfram varbide: 82.88%, tantalum carbide: 0.75%, chromium: 3.56%, silicon: 0.28%, nickel: 1.26%, vanadium: 0.85%, niobium: 0.04%, titanium 0.55%, compound rare-earth: 3.25%, surplus is molybdenum;
Wherein the component of compound rare-earth is by mass percentage: lanthanum: 14%, cerium: 11%, praseodymium: 5%, neodymium: 25%, promethium: 8%, samarium: 14%, gadolinium: 12%, and surplus is lutetium; This embodiment still provides the preparation method of high-strength alloy cutter head:
Step (1): first wolfram varbide, tantalum carbide are put into reactor and be heated to 2300 DEG C, insulation 3h, then 1600 DEG C are cooled the temperature to, then chromium, silicon, nickel, v element is added successively to reactor, and stir, pass into nitrogen as shielding gas at whipping process to reactor, stirring velocity is 500r/min, and churning time is: 50min;
Step (2): continue after completing steps 1 to add niobium, titanium, compound rare-earth, molybdenum element to reactor, then cool the temperature to 1250 DEG C, then continue pass into nitrogen and stir in reactor, stirring velocity: 600r/min, churning time is 2h;
Step (3): then reactor is heated to 1550 DEG C, insulation 5h, flows into die cast in blade grinding tool by the liquid in reactor, and is processed by the alloy cutter head blank after shaping, obtain alloy cutter head;
Step (4): the alloy cutter head after processing in step 3 is heat-treated: first alloy cutter head is heated to 350 DEG C, insulation 30min, and then with the heating rate to 980 DEG C of 5 DEG C/s, insulation 8h, then water-cooled is adopted, reduce by 650 DEG C with the speed of cooling of 12 DEG C/s, insulation 30min, and then adopt oil cooling, 360 DEG C are down to 9 DEG C/s oil cooling speed, insulation 2h, finally adopts air-cooled, is cooled to room temperature with the speed of 7 DEG C/s;
Step (5): cleaned by the alloy cutter head warm water after step 4 thermal treatment, then dry up, then at its surface smear one deck slushing oil, finally packs.
embodiment 3
The present embodiment provides a kind of high-strength alloy cutter head, and the component of alloy cutter head is by mass percentage: wolfram varbide: 82.68%, tantalum carbide: 0.74%, chromium: 3.55%, silicon: 0.27%, nickel: 1.25%, vanadium: 0.84%, niobium: 0.03%, titanium 0.54%, compound rare-earth: 3.24%, surplus is molybdenum;
Wherein the component of compound rare-earth is by mass percentage: lanthanum: 13%, cerium: 10%, praseodymium: 4%, neodymium: 24%, promethium: 7%, samarium: 13%, gadolinium: 11%, and surplus is lutetium; This embodiment still provides the preparation method of high-strength alloy cutter head:
Step (1): first wolfram varbide, tantalum carbide are put into reactor and be heated to 2250 DEG C, insulation 2h, then 1580 DEG C are cooled the temperature to, then chromium, silicon, nickel, v element is added successively to reactor, and stir, pass into nitrogen as shielding gas at whipping process to reactor, stirring velocity is 400r/min, and churning time is: 40min;
Step (2): continue after completing steps 1 to add niobium, titanium, compound rare-earth, molybdenum element to reactor, then cool the temperature to 1230 DEG C, then continue pass into nitrogen and stir in reactor, stirring velocity: 550r/min, churning time is 1.5h;
Step (3): then reactor is heated to 1480 DEG C, insulation 4h, flows into die cast in blade grinding tool by the liquid in reactor, and is processed by the alloy cutter head blank after shaping, obtain alloy cutter head;
Step (4): the alloy cutter head after processing in step 3 is heat-treated: first alloy cutter head is heated to 330 DEG C, insulation 28min, and then with the heating rate to 950 DEG C of 4 DEG C/s, insulation 6h, then water-cooled is adopted, reduce by 640 DEG C with the speed of cooling of 11 DEG C/s, insulation 25min, and then adopt oil cooling, 350 DEG C are down to 8 DEG C/s oil cooling speed, insulation 1.2h, finally adopts air-cooled, is cooled to room temperature with the speed of 6 DEG C/s;
Step (5): cleaned by the alloy cutter head warm water after step 4 thermal treatment, then dry up, then at its surface smear one deck slushing oil, finally packs.
Like this by the technical scheme of embodiment, not only intensity is high for this high-strength alloy cutter head, and wear resisting property and resistance to elevated temperatures very outstanding, reduce the abrasion loss of cutter head, improve the quality of cutting surface, improve the work-ing life of cutter head, reduce costs, save material, and cost is low, thing is cheap beautiful, and this preparation method provided is simple to operate, can not only cut down finished cost, shorten the process-cycle, and can increase work efficiency, improve the quality of product.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (5)
1. a high-strength alloy cutter head, it is characterized in that: the component of described alloy cutter head is by mass percentage: wolfram varbide: 82.58-82.88%, tantalum carbide: 0.72-0.75%, chromium: 3.54-6.56%, silicon: 0.25-0.28%, nickel: 1.24-1.26%, vanadium: 0.82-0.85%, niobium: 0.02-0.04%, titanium 0.52-0.55%, compound rare-earth: 3.21-3.25%, surplus is molybdenum;
Wherein the component of compound rare-earth is by mass percentage: lanthanum: 12-14%, cerium: 7-11%, praseodymium: 3-5%, neodymium: 22-25%, promethium: 4-8%, samarium: 12-14%, gadolinium: 8-12%, and surplus is lutetium.
2. high-strength alloy cutter head according to claim 1, it is characterized in that: the component of described alloy cutter head is by mass percentage: wolfram varbide: 82.58%, tantalum carbide: 0.72%, chromium: 3.54%, silicon: 0.25%, nickel: 1.24%, vanadium: 0.82%, niobium: 0.02%, titanium 0.52%, compound rare-earth: 3.21%, surplus is molybdenum;
Wherein the component of compound rare-earth is by mass percentage: lanthanum: 12%, cerium: 7%, praseodymium: 3%, neodymium: 22%, promethium: 4%, samarium: 12%, gadolinium: 8%, and surplus is lutetium.
3. high-strength alloy cutter head according to claim 1, it is characterized in that: the component of described alloy cutter head is by mass percentage: wolfram varbide: 82.88%, tantalum carbide: 0.75%, chromium: 3.56%, silicon: 0.28%, nickel: 1.26%, vanadium: 0.85%, niobium: 0.04%, titanium 0.55%, compound rare-earth: 3.25%, surplus is molybdenum;
Wherein the component of compound rare-earth is by mass percentage: lanthanum: 14%, cerium: 11%, praseodymium: 5%, neodymium: 25%, promethium: 8%, samarium: 14%, gadolinium: 12%, and surplus is lutetium.
4. high-strength alloy cutter head according to claim 1, it is characterized in that: the component of described alloy cutter head is by mass percentage: wolfram varbide: 82.68%, tantalum carbide: 0.74%, chromium: 3.55%, silicon: 0.27%, nickel: 1.25%, vanadium: 0.84%, niobium: 0.03%, titanium 0.54%, compound rare-earth: 3.24%, surplus is molybdenum;
Wherein the component of compound rare-earth is by mass percentage: lanthanum: 13%, cerium: 10%, praseodymium: 4%, neodymium: 24%, promethium: 7%, samarium: 13%, gadolinium: 11%, and surplus is lutetium.
5. a preparation method for high-strength alloy cutter head, is characterized in that: the method is carried out according to the following steps:
Step (1): first wolfram varbide, tantalum carbide are put into reactor and be heated to 2200-2300 DEG C, insulation 1-3h, then 1500-1600 DEG C is cooled the temperature to, then chromium, silicon, nickel, v element is added successively to reactor, and stir, pass into nitrogen as shielding gas at whipping process to reactor, stirring velocity is 300-500r/min, and churning time is: 30-50min;
Step (2): continue after completing steps 1 to add niobium, titanium, compound rare-earth, molybdenum element to reactor, then 1200-1250 DEG C is cooled the temperature to, then continue in reactor, pass into nitrogen and stir, stirring velocity: 450-600r/min, churning time is 1-2h;
Step (3): then reactor is heated to 1450-1550 DEG C, insulation 3-5h, flows into die cast in blade grinding tool by the liquid in reactor, and is processed by the alloy cutter head blank after shaping, obtain alloy cutter head;
Step (4): the alloy cutter head after processing in step 3 is heat-treated: first alloy cutter head is heated to 300-350 DEG C, insulation 20-30min, and then with the heating rate of 3-5 DEG C/s to 920-980 DEG C, insulation 5-8h, then water-cooled is adopted, reduce 620-650 DEG C with the speed of cooling of 10-12 DEG C/s, insulation 20-30min, and then adopt oil cooling, 340-360 DEG C is down to 7-9 DEG C/s oil cooling speed, insulation 1-2h, finally adopts air-cooled, is cooled to room temperature with the speed of 5-7 DEG C/s;
Step (5): cleaned by the alloy cutter head warm water after step 4 thermal treatment, then dry up, then at its surface smear one deck slushing oil, finally packs.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686924A (en) * | 2017-09-18 | 2018-02-13 | 张家港钻通设备有限公司 | A kind of high-speed steel drill material |
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Application publication date: 20151216 |