CN1066613A

CN1066613A - Casting binder and preparation method thereof

Info

Publication number: CN1066613A
Application number: CN 91107048
Authority: CN
Inventors: 李佑发
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-05-15
Filing date: 1991-05-15
Publication date: 1992-12-02
Anticipated expiration: 2006-05-15

Abstract

The invention belongs to casting binder, it is to be primary raw material with heavy oil, rapeseed oil residue, adds diesel oil, tung oil, iron naphthenate again, sulfuric acid FeS ₂, raw material reaction such as phthalocyanine blue forms.It can be used for the bonding of molding sand, core sand.Both can cast iron, again can cast steel.Its performance is better than tung oil sand, water-glass sand.There is not corrosion, free from environmental pollution, cheap.

Description

Casting binder and preparation method thereof

The invention belongs to high polymer binder.The bonding that can be used for core sand, molding sand can cast iron, cast steel.

The organic binder bond that uses in producing at present has tung oil, linseed oil, closes fat, Lauxite, phenol phenol resin etc.It is very big wherein to close binding agent penetrating odors such as fat, Lauxite, phenolic resins, furane resins, and contaminated environment is serious.Though tung oil, linseed oil adhesive property are good, the source less, cost an arm and a leg, and tung oil generally also is not used in cast steel.

The object of the present invention is to provide a kind of cheap, novel high polymer binding agent that can replace tung oil, it can either be used for cast iron, can be used for cast steel again.

Raw material and prescription thereof that the present invention adopts are: heavy oil 33%, rapeseed oil residue 33%(castor-oil plant oil foot, tung oil pin also can), diesel oil 20%, tung oil 10%, iron naphthenate 3.5%(zinc naphthenate also can), sulfuric acid 0.3%, Huang Tie (FeS ₂) 0.1%, pthalocyanine blue 0.1%.

Its preparation method is referring to the technological process shown in the Figure of description.

The present invention's process Ma'anshan Iron and Steel Corp mechanical repair plant cast steel, iron foundry (shop), Maanshan City's malleable iron factory, units such as Dangtu County machinery plant repeatedly try out, and reaction is good.They write in trial report: " not scab mould when utilizing this novel binders coremaking, mobile, plasticity is all good, is convenient to forming operation, stoving process is grasped easily, and the time is short, is difficult for scaling loss, intensity height.Behind the core baking, but nonhygroscopic, the indeformable long period deposit.Gas forming amount is little during cast, and cast(ing) surface is bright and clean, easily cleaning." " this kind novel binders is similar to tung oil as its main performance of steel-casting binding agent, and dry strength and collapsibility are preferably arranged, and especially uses on thin-section casting performance better." " this kind binding agent need not additives, and bake out temperature is 200-240 ℃, and non-stimulated smell does not corrode the hand skin, and release property is good, and wet strength, dry strength, gas permeability and collapsibility all can satisfy production requirement ".

Describe raw material, prescription, the preparation method of this novel binders below in detail for an embodiment.

Earlier 33 jin, a traditional unit of weight of heavy oil, 33 jin, a traditional unit of weight of rapeseed oil residues are contained in two containers (big iron pan) heating equably simultaneously respectively.Heavy oil is heated to about 200 ℃, is incubated 10-20 minute, loses steam and emerges, and to there being blue look cigarette to begin, promptly adds 1 liang pthalocyanine blue, constantly stirs, and is incubated about 10 minutes.At the same time, when rapeseed oil residue is heated to 100 ℃ of left and right sides, continue insulation, allow when wherein water evaporates is finished (cannot see steam emerges), add 3 liang sulfuric acid, constantly stir.When thing in the pot is the magma state, add yellow iron (FeS again ₂) 1 liang, and ceaselessly stir.Then the raw material in two mouthfuls of big iron pans is converted and be mixed in a stirred vessel (big metal bucket or big iron pan) lining, stir fast (in case foaming, expand to overflow and cause waste and scald).After treating that a pot interior thing all mixes, be cooled to about 80 ℃.Add 3.5 jin, a traditional unit of weight of iron naphthenates (or zinc naphthenate) again, after constantly stirring, add 20 jin, a traditional unit of weight of diesel oil, stir again.Add 10 jin, a traditional unit of weight of tung oil at last again, continue to stir.Reduce to normal temperature, promptly become novel casting binder.

Claims

1, a kind of novel casting binder.

Raw material and prescription: heavy oil 33%, rapeseed oil residue (castor-oil plant oil foot, tung oil pin also can) 33%, diesel oil 20%, tung oil 10%, iron naphthenate (zinc naphthenate also can) 3.5%, sulfuric acid 0.3%, Huang Tie (FeS ₂) 0.1%, pthalocyanine blue 0.1%.