CN102989996B - Method for preparing release agent for precision casting - Google Patents
Method for preparing release agent for precision casting Download PDFInfo
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- CN102989996B CN102989996B CN201210425832.9A CN201210425832A CN102989996B CN 102989996 B CN102989996 B CN 102989996B CN 201210425832 A CN201210425832 A CN 201210425832A CN 102989996 B CN102989996 B CN 102989996B
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Abstract
The invention discloses a method for preparing a release agent for precision casting, belonging to the technical field of release agents. The method comprises the steps of: (1) weighing 3-5 parts of titanium dioxide, 11-16 parts of quicklime, 7-9 parts of zinc oxide and 8-12 parts of polyoxyethylene octylphenol ether by mass and adding into a dispersion machine; (2) adding the dispersed mixture obtained in the step (1) into a reaction kettle, when the temperature of the reaction kettle reaches 40-45 DEG C and the thermostatic reaction is carried out for 30-35 minutes, weighing 6-7 parts of dibutyltin dilaurate by mass and adding into the reaction kettle, controlling the heating rate to be 3-4 DEG C/min and when the temperature of the reaction kettle reaches 58-62 DEG C, weighing 27-30 parts of hydrogenated terphenyl and 20-25 parts of 320 conduction oil by mass; and (3) cooling the mixture obtained in the step (2) to 20-25 DEG C, weighing 5-8 parts of kerosene and 10-13 parts of butyl acrylate by mass and mixing with the mixture obtained in the step (2). The method disclosed by the invention has the advantages that the production cost is low; the demoulding effect of the release agent is good; and the rejection rate is reduced.
Description
Technical field
The present invention relates to releasing agent technical field, more particularly, relate to the preparation method of a kind of hot investment casting releasing agent.
Background technology
Because precision casting has that precision is high, surface roughness value is low, flexibility is high, the advantage such as strong adaptability, material-saving be laborsaving, so, in the wide field such as electronics, oil, chemical industry, communications and transportation, light industry, weaving, pharmacy, medicine equipment, pump and valve member, particularly complex structure accessory, be widely used.In hot investment casting operation, selecting of the making of core and releasing agent is vital.
At present, in hot investment casting, the normal core using is urea core, good releasing agent, require except making metal parts takes out from mould, effect that also must super fatting agent, so that the slip of the parts of mould, and raising motlten metal flowing in its core, to promote filling completely, meanwhile, also do not there is pollution.Because die casting equipment is conventionally with loop operation, i.e. some days of equipment circular flow, good releasing agent, requires at circulation time, can not on mould, leave oily residue.
By patent retrieval, existing relevant technical scheme is open, as China Patent No. ZL201010295206.3, September 29 2010 applying date, invention and created name is: high-temperature resistant precision casting wax mould core release agent, and this application case relates to a kind of high-temperature resistant precision casting wax mould core release agent, and it presses volumetric ratio 1:9 ~ 11 by kerosene and 320 conduction oils, under sealing state, mix, make through stirring.This high-temperature resistant precision casting wax mould core release agent, after stirring is even, need to be controlled at 3 hours with interior use, and this has relatively high expectations for actual field, be inconvenient to use, and stripping result is undesirable, need to further improve.
In addition, Chinese Patent Application No. 201110140593.8, the applying date is on May 28th, 2011, invention and created name is: a kind of releasing agent used for casting, this application case discloses a kind of releasing agent used for casting, it is by hydroxy propyl methacrylate, acrylic acid, butyl acrylate, styrene, ammonium persulfate, polyoxyethylene nonylphenol ether, deionized water, calcium stearate, calcium carbonate, talcum powder, titanium dioxide, Sodium Polyacrylate, alcohol ester 12, silane forms, the percentage by weight of its formula composition is: hydroxy propyl methacrylate 3% ~ 5%, acrylic acid 3% ~ 10%, butyl acrylate 3% ~ 10%, styrene 5% ~ 15%, ammonium persulfate 0.5% ~ 1%, polyoxyethylene nonylphenol ether 0.3% ~ 0.6%, deionized water 40% ~ 70%, calcium stearate 3% ~ 10%, calcium carbonate 3% ~ 5%, talcum powder 3% ~ 10%, titanium dioxide 3% ~ 5%, Sodium Polyacrylate 0.5% ~ 1%, alcohol ester 12 1% ~ 5%, silane 0.3% ~ 0.5%, in formula, each constituent content sum is 100%.This application case is just likely rotten in the time that temperature is greater than more than 50 DEG C; cause stripping result to reduce; result of use is not very desirable; mould and urea core also there will be adhesion phenomenon; urea core is also difficult to separate from mould; forced demoulding can make urea type wicking surface cause misrun because of adhesion, makes the coarse of surface change, even becomes waste product.
Summary of the invention
1. the technical problem that invention will solve
The object of the invention is to overcome the poor deficiency of the stripping result of releasing agent in prior art, the preparation method of a kind of hot investment casting releasing agent is provided, the releasing agent that adopts method of the present invention to prepare, can make whose surfaces no longer with the die surface phenomenon that sticks together, improve stripping result, reduced percent defective.
2. technical scheme
For achieving the above object, technical scheme provided by the invention is:
The preparation method of releasing agent for a kind of hot investment casting of the present invention, the steps include:
(1) take 3 ~ 5 parts of titanium dioxides, 11 ~ 16 parts of quick limes, 7 ~ 9 parts, zinc oxide, 8 ~ 12 parts of OPEOs by mass fraction, open dispersion machine, in dispersion machine, add titanium dioxide, quick lime, zinc oxide and OPEO successively, disperse 2 ~ 3 hours;
(2) mixture after step (1) dispersion is added to reactor, in the time that the temperature of reactor reaches 40 ~ 45 DEG C, after isothermal reaction 30 ~ 35 minutes, take 6 ~ 7 parts of dibutyl tin laurates and add reactor by mass fraction, controlling heating rate is 3 ~ 4 DEG C/min, when the temperature of reactor reaches after 58 ~ 62 DEG C, take 27 ~ 30 parts of hydrogenated terphenyls, 20 ~ 25 parts of 320 conduction oils by mass fraction, continue isothermal reaction 20min;
(3) mixture of step (2) is naturally cooled to 20 ~ 25 DEG C, take 10 ~ 13 parts of 5 ~ 8 parts of kerosene and butyl acrylates by mass fraction, and mix with the mixture of step (2), obtain hot investment casting releasing agent.
The releasing agent that adopts method of the present invention to prepare, it is made up of kerosene, 320 conduction oils, dibutyl tin laurate, hydrogenated terphenyl, butyl acrylate, OPEO, titanium dioxide, quick lime and zinc oxide, and the parts by weight of its formula composition are:
5 ~ 8 parts of kerosene
320 20 ~ 25 parts of conduction oils
6 ~ 7 parts of dibutyl tin laurates
27 ~ 30 parts of hydrogenated terphenyls
10 ~ 13 parts of butyl acrylates
8 ~ 12 parts of OPEOs
3 ~ 5 parts of titanium dioxides
11 ~ 16 parts of quick limes
7 ~ 9 parts, zinc oxide.
Preferably, in described step (1), take 11 parts of 4 parts of titanium dioxides, 14 parts of quick limes, 8 parts, zinc oxide and OPEOs by mass fraction.
Preferably, described step (2) takes 6 parts of dibutyl tin laurates by mass fraction, and reaches after 60 DEG C when the temperature of reactor, takes 23 parts of 28 parts of hydrogenated terphenyls and 320 conduction oils by mass fraction.
Preferably, described step (3) takes 12 parts of 7 parts of kerosene and butyl acrylates by mass fraction.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with existing known technology, there is following remarkable result:
(1) preparation method of releasing agent for a kind of hot investment casting of the present invention, the releasing agent that it prepares, can within the scope of 50 ~ 180 DEG C, can normally use for a long time, there will not be the situation of deterioration failure, so whose surfaces not can with the die surface phenomenon that sticks together, improve stripping result, reduced percent defective;
(2) preparation method of releasing agent for a kind of hot investment casting of the present invention, the stripping result of its releasing agent is good, and production cost is low, and to the corrosion-free effect of foundry goods, foundry goods is deposited can not produce the situation such as mildew and corrosion half a year above yet;
(3) preparation method of releasing agent for a kind of hot investment casting of the present invention, its process is simple, and production cost is low.
Detailed description of the invention
For further understanding content of the present invention, below in conjunction with embodiment, the invention will be further described.
embodiment 1
A kind of hot investment casting releasing agent of the present embodiment, it is made up of kerosene, 320 conduction oils, dibutyl tin laurate, hydrogenated terphenyl, butyl acrylate, OPEO, titanium dioxide, quick lime and zinc oxide, the parts by weight of its formula composition are: 8 parts of kerosene, 320 20 parts of conduction oils, 7 parts of dibutyl tin laurates, 27 parts of hydrogenated terphenyls, 13 parts of butyl acrylates, 8 parts of OPEOs, 5 parts of titanium dioxides, 11 parts of quick limes, 9 parts, zinc oxide.
The preparation method of releasing agent for a kind of hot investment casting of the present embodiment, its concrete steps are as follows:
(1) take 5 parts of titanium dioxides, 11 parts of quick limes, 9 parts, zinc oxide, 8 parts of OPEOs by mass fraction, open dispersion machine, in dispersion machine, add titanium dioxide, quick lime, zinc oxide and OPEO successively, disperse 2 hours;
(2) mixture after step (1) dispersion is added to reactor, in the time that the temperature of reactor reaches 40 DEG C, after isothermal reaction 35 minutes, take 7 parts of dibutyl tin laurates and add reactor by mass fraction, controlling heating rate is 4 DEG C/min, when the temperature of reactor reaches after 58 DEG C, take 27 parts of hydrogenated terphenyls, 20 parts of 320 conduction oils by mass fraction, continue isothermal reaction 20min;
(3) mixture of step (2) is naturally cooled to 20 DEG C, take 13 parts of 8 parts of kerosene and butyl acrylates by mass fraction, and mix with the mixture of step (2), obtain hot investment casting releasing agent.
embodiment 2
A kind of hot investment casting releasing agent of the present embodiment, it is made up of kerosene, 320 conduction oils, dibutyl tin laurate, hydrogenated terphenyl, butyl acrylate, OPEO, titanium dioxide, quick lime and zinc oxide, the parts by weight of its formula composition are: 5 parts of kerosene, 320 25 parts of conduction oils, 6.5 parts of dibutyl tin laurates, 30 parts of hydrogenated terphenyls, 10 parts of butyl acrylates, 12 parts of OPEOs, 3 parts of titanium dioxides, 16 parts of quick limes, 7 parts, zinc oxide.
The preparation method of releasing agent for a kind of hot investment casting of the present embodiment, its concrete steps are as follows:
(1) take 3 parts of titanium dioxides, 16 parts of quick limes, 7 parts, zinc oxide, 12 parts of OPEOs by mass fraction, open dispersion machine, in dispersion machine, add titanium dioxide, quick lime, zinc oxide and OPEO successively, disperse 3 hours;
(2) mixture after step (1) dispersion is added to reactor, in the time that the temperature of reactor reaches 45 DEG C, after isothermal reaction 30 minutes, take 6.5 parts of dibutyl tin laurates and add reactor by mass fraction, controlling heating rate is 3 DEG C/min, when the temperature of reactor reaches after 62 DEG C, take 30 parts of hydrogenated terphenyls, 25 parts of 320 conduction oils by mass fraction, continue isothermal reaction 20min;
(3) mixture of step (2) is naturally cooled to 25 DEG C, take 10 parts of 5 parts of kerosene and butyl acrylates by mass fraction, and mix with the mixture of step (2), obtain hot investment casting releasing agent.
embodiment 3
A kind of hot investment casting releasing agent of the present embodiment, it is made up of kerosene, 320 conduction oils, dibutyl tin laurate, hydrogenated terphenyl, butyl acrylate, OPEO, titanium dioxide, quick lime and zinc oxide, the parts by weight of its formula composition are: 7 parts of kerosene, 320 23 parts of conduction oils, 6 parts of dibutyl tin laurates, 28 parts of hydrogenated terphenyls, 12 parts of butyl acrylates, 11 parts of OPEOs, 4 parts of titanium dioxides, 14 parts of quick limes, 8 parts, zinc oxide.
The preparation method of releasing agent for a kind of hot investment casting of the present embodiment, its concrete steps are as follows:
(1) take 4 parts of titanium dioxides, 14 parts of quick limes, 8 parts, zinc oxide, 11 parts of OPEOs by mass fraction, open dispersion machine, in dispersion machine, add titanium dioxide, quick lime, zinc oxide and OPEO successively, disperse 2.5 hours;
(2) mixture after step (1) dispersion is added to reactor, in the time that the temperature of reactor reaches 43 DEG C, after isothermal reaction 32 minutes, take 6 parts of dibutyl tin laurates and add reactor by mass fraction, controlling heating rate is 3.5 DEG C/min, when the temperature of reactor reaches after 60 DEG C, take 28 parts of hydrogenated terphenyls, 23 parts of 320 conduction oils by mass fraction, continue isothermal reaction 20min;
(3) mixture of step (2) is naturally cooled to 22 DEG C, take 12 parts of 7 parts of kerosene and butyl acrylates by mass fraction, and mix with the mixture of step (2), obtain hot investment casting releasing agent.
The preparation method of releasing agent for a kind of hot investment casting of embodiment 1 ~ 3, the releasing agent preparing can normally use for a long time within the scope of 50 ~ 180 DEG C, there will not be the situation of deterioration failure, so whose surfaces not can with the die surface phenomenon that sticks together, improve stripping result, reduced percent defective, and to the corrosion-free effect of foundry goods, foundry goods is deposited can not produce the situation such as mildew and corrosion half a year above yet.
Claims (4)
1. a preparation method for releasing agent for hot investment casting, the steps include:
(1) take 3 ~ 5 parts of titanium dioxides, 11 ~ 16 parts of quick limes, 7 ~ 9 parts, zinc oxide, 8 ~ 12 parts of OPEOs by mass fraction, open dispersion machine, in dispersion machine, add titanium dioxide, quick lime, zinc oxide and OPEO successively, disperse 2 ~ 3 hours;
(2) mixture after step (1) dispersion is added to reactor, in the time that the temperature of reactor reaches 40 ~ 45 DEG C, after isothermal reaction 30 ~ 35 minutes, take 6 ~ 7 parts of dibutyl tin laurates and add reactor by mass fraction, controlling heating rate is 3 ~ 4 DEG C/min, when the temperature of reactor reaches after 58 ~ 62 DEG C, take 27 ~ 30 parts of hydrogenated terphenyls, 20 ~ 25 parts of 320 conduction oils by mass fraction, continue isothermal reaction 20min;
(3) mixture of step (2) is naturally cooled to 20 ~ 25 DEG C, take 10 ~ 13 parts of 5 ~ 8 parts of kerosene and butyl acrylates by mass fraction, and mix with the mixture of step (2), obtain hot investment casting releasing agent.
2. the preparation method of releasing agent for a kind of hot investment casting according to claim 1, is characterized in that: in described step (1), take 11 parts of 4 parts of titanium dioxides, 14 parts of quick limes, 8 parts, zinc oxide and OPEOs by mass fraction.
3. the preparation method of releasing agent for a kind of hot investment casting according to claim 2, it is characterized in that: described step (2) takes 6 parts of dibutyl tin laurates by mass fraction, and when the temperature of reactor reaches after 60 DEG C, take 23 parts of 28 parts of hydrogenated terphenyls and 320 conduction oils by mass fraction.
4. the preparation method of releasing agent for a kind of hot investment casting according to claim 3, is characterized in that: described step (3) takes 12 parts of 7 parts of kerosene and butyl acrylates by mass fraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210425832.9A CN102989996B (en) | 2012-10-31 | 2012-10-31 | Method for preparing release agent for precision casting |
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| CN201210425832.9A CN102989996B (en) | 2012-10-31 | 2012-10-31 | Method for preparing release agent for precision casting |
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| CN102989996A CN102989996A (en) | 2013-03-27 |
| CN102989996B true CN102989996B (en) | 2014-07-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105344928A (en) * | 2015-10-26 | 2016-02-24 | 无锡市永亿精密铸造有限公司 | Mold releasing agent for precisely-casted universal ball |
| CN105945212A (en) * | 2016-06-20 | 2016-09-21 | 安徽宜安精密机械零部件有限公司 | Environment-friendly release agent for precise casting and preparing technology for environment-friendly release agent |
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| JPS4913694B1 (en) * | 1970-12-01 | 1974-04-02 | ||
| JP3161826B2 (en) * | 1992-08-18 | 2001-04-25 | 信越アステック株式会社 | Release agent for wax model for precision casting and method for molding wax model |
| CN1048929C (en) * | 1996-05-10 | 2000-02-02 | 赵洪昌 | Water-soluble mold-release agent and its preparation method |
| CN101966557B (en) * | 2010-09-29 | 2012-06-06 | 莱芜市泰钢新材料有限责任公司 | High-temperature resistant precision casting wax mould core release agent |
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Address after: 225300, 98, Ying Dong Road, Hailing District, Jiangsu, Taizhou Patentee after: Gao Jinju Address before: 210000 No. 207, Ning Gong Er village, Gulou District, Jiangsu, Nanjing Patentee before: Gao Jinju |
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Address after: 210000 No. 207, Ning Gong Er village, Gulou District, Jiangsu, Nanjing Patentee after: Gao Jinju Address before: 225300, 98, Ying Dong Road, Hailing District, Jiangsu, Taizhou Patentee before: Gao Jinju |
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Granted publication date: 20140716 Termination date: 20151031 |
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