CN102806310B - Metal component casting process - Google Patents
Metal component casting process Download PDFInfo
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- CN102806310B CN102806310B CN201110143312.4A CN201110143312A CN102806310B CN 102806310 B CN102806310 B CN 102806310B CN 201110143312 A CN201110143312 A CN 201110143312A CN 102806310 B CN102806310 B CN 102806310B
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Abstract
The invention discloses a metal component casting process, which comprises the following steps: (1) manufacturing a mold sample, (2) manufacturing a silica gel outer mold, (3) manufacturing a wax mold, (4) molding, and (5) carrying out casting, shaking-out and finishing, wherein the molding process adopts combination of a lost-wax precision casting process, a plaster mold casting process and a self-hardening resin sand mold casting process to carry out modification grafting on a casting mold system so as to successfully develop a metal component casting process. Results of process performance tests, technical analysis and production applications of the new process show that the new casting method has the following characteristics that a casting surface is fine, casting quality is good, a specification size is large, flatness is good, cost is low, a production cycle is short, molding is rapid, collapsibility is good, the material can be subjected to dry regeneration and recovery utilization, pollution is less, energy sources are saved, and the bottleneck of metal component casting is solved. In addition, the process of the present invention is applicable for molding of various alloy castings.
Description
Technical field
The invention belongs to Casting Technology field, be specifically related to a kind of hardware casting technique.
Background technology
Casting technique is one of fundamental technology of modern mechanical manufacturing industry, hardware casting Metal Melting is smelt to meet necessarily required liquid metal, be poured into foundry goods die cavity back warp cooled and solidified, level process after obtain the casting process process of predetermined shape, size and performance.Casting technique conventional in prior art has resin bonded sand mould casting, dewax hot investment casting, plaster casting etc.The shortcoming of resin bonded sand mould casting be coarse, moulding lively, can not do complex model; The moulding of dewax hot investment casting is fine and smooth, can complete complicated moulding, but its complex process, cost is high, the time is long, and can only does small pieces, can not do large part, easily be out of shape; Many, benefit that plaster casting adopts in handicraft product casting can be done greatly, and be not easy distortion, its shortcoming is that cost is high, the cycle is long.
Summary of the invention
The object of the invention is the shortcoming for existing in prior art and problem, provide one can cast complex-shaped, with low cost, shaping time fast, cast large part and also do not allow yielding hardware casting technique.
Technical scheme of the present invention is: a kind of hardware casting technique, it comprises the steps:
(1) apperance is manufactured: after the product model of the hardware of sizing or new production is carried out grinding process, then clean surface with pure cotton cloth, then by vaseline uniform application in surface;
(2) silica gel external mold processed: adopt the mode that multilayer is smeared or solid is poured into make and reserve the silicon rubber mould at sprue gate with silicon rubber, its external application gypsum or resin set off mould.
(3) wax-pattern processed: by melted paraffin wax, is poured in silica gel mould by sprue gate, forms hollow paraffin model after cooling;
(4) moulding:
A. at hollow paraffin model luminal perfusion gypsum, carry out surperficial refine after inner chamber gypsum, make solid paraffin model;
B. according to solid paraffin model shape, assembly welding sprue gate and runner system on solid paraffin model, then adhere to solid paraffin model with retinite sand;
C. high temperature dewax after the solid paraffin model drying of outer attachment retinite sand is also removed solidification gypsum, obtain retinite sand external mold clearly;
D. external mold is taken apart, paste the rubber cement of regulation wall thickness, then record core with retinite sand;
(5) pour into a mould, knockout and finishing: the liquid metal through melting is cast in retinite sand mould, then through supercooling, shell, polishing makes hardware.
Described retinite sand is formed by quartz sand, epoxy resin, curing agent mixed preparing, and the retinite sand weight that summer uses is: quartz sand 100 parts, epoxy resin 1.6 ~ 2.0 parts, 0.6 ~ 0.9 part, curing agent; The retinite sand weight of use in winter is: quartz sand 100 parts, epoxy resin 1.8 ~ 2.2 parts, 0.7 ~ 1.0 part, curing agent.
Described curing agent is epoxy curing agent, as: methyl tetrahydro phthalic anhydride (C9H1003), methyl hexahydrophthalic anhydride (C9H1203), 113 epoxy hardeners, amine epoxy curing agent modified TDC-3361, amine epoxy curing agent modified TDC-8213,593 epoxy curing agents, curing agent TDC-1784, epoxy resin is high temperature resistant curing agent TDC-308, epoxy resin is high temperature resistant curing agent TDC-3081.
Described quartz sand fineness is 70 ~ 200 orders, water content≤0.25%, clay content≤1%.
Advantage of the present invention is: cost is low, the cycle is short, be also not easy distortion, can do large part, can do very complicated article.This art inventions emphasis is in (3), (4), (5).Process characteristic: casting technique is that the combination of advantages merging often kind of foundry processing forms, utilizes the surface aesthetics effect in dewax precision casting process to copy meticulous feature completely; In conjunction with plaster casting technological forming feature rapidly, carry out multiple mould with gypsum mixture and fix, make model more stable and stronger; Carry out the moulding of self-hardening resin sand casting process on wax pattern surface again, thus it is meticulous to obtain cast(ing) surface, specification is large, and good straightness degree is with short production cycle, foundry processing shaping rapidly.In all casting techniques, cost is minimum, be not easy distortion, large part can be done and very complicated foundry goods, the cycle is short, pollute minimum, collapsibility is optimum, material regeneration recovery utilization rate is large, greatly solves foundry processing bottleneck, for foundry processing improves a new level.
Detailed description of the invention
Below in conjunction with specific embodiment party example, the present invention will be further described.
Embodiment 1: a kind of hardware casting technique, it comprises the steps:
(1) apperance is manufactured: after the product model of the hardware of sizing or new production is carried out grinding process, then clean surface with pure cotton cloth, then by vaseline uniform application in surface;
(2) silica gel external mold processed: adopt the mode that multilayer is smeared or solid is poured into make and reserve the silicon rubber mould at sprue gate with silicon rubber, its external application gypsum sets off mould.
(3) wax-pattern processed: by melted paraffin wax, is poured in silica gel mould by sprue gate, forms hollow paraffin model after cooling;
(4) moulding: a., at hollow paraffin model luminal perfusion gypsum, carries out surperficial refine after inner chamber gypsum, makes solid paraffin model; B. according to solid paraffin model shape, assembly welding sprue gate and runner system on solid paraffin model, then adhere to solid paraffin model with retinite sand; C. high temperature dewax after the solid paraffin model drying of outer attachment retinite sand is also removed solidification gypsum, obtain retinite sand external mold clearly; D. external mold is taken apart, paste the rubber cement of regulation wall thickness, then record core with retinite sand;
(5) pour into a mould, knockout and finishing: the liquid metal through melting is cast in retinite sand mould, then through supercooling, shell, polishing makes hardware;
Wherein, described retinite sand be summer use retinite sand weight be: 180 object quartz sands 100 parts, epoxy resin 1.8 parts, 0.8 part, methyl tetrahydro phthalic anhydride (C9H1003) curing agent.
Embodiment 2:
A kind of hardware casting technique, it comprises the processing step described in embodiment 1, and wherein, in step (2), external application resin sets off mould; Described retinite sand is the retinite sand weight used summer: 120 orders obtain quartz sand 100 parts, epoxy resin 1.6 parts, and amine epoxy curing agent modified TDC-3361 is 0.7 part.
Embodiment 3:
A kind of hardware casting technique, it comprises the processing step described in embodiment 1, and wherein, in step (2), external application gypsum sets off mould; Described retinite sand is the retinite sand weight of use in winter: 100 object quartz sands 100 parts, and epoxy resin 2.0 parts, epoxy resin is high temperature resistant, and curing agent TDC-308 is 1 part.
Embodiment 4:
A kind of hardware casting technique, it comprises the processing step described in embodiment 1, and wherein, in step (2), external application resin sets off mould; Described retinite sand is the retinite sand weight of use in winter: 80 object quartz sands 100 parts, and epoxy resin 2.2 parts, epoxy resin is high temperature resistant, and curing agent TDC-308 is 0.9 part.
Claims (2)
1. a hardware casting technique, it comprises the steps:
(1) apperance is manufactured: after the product model of the hardware of sizing or new production is carried out grinding process, then clean surface with pure cotton cloth, then by vaseline uniform application in surface;
(2) silica gel external mold processed: adopt the mode that multilayer is smeared or solid is poured into make and reserve the silicon rubber mould at sprue gate with silicon rubber, its external application gypsum or resin set off mould;
(3) wax-pattern processed: by melted paraffin wax, is poured in silica gel mould by sprue gate, forms hollow paraffin model after cooling;
(4) moulding: a., at hollow paraffin model luminal perfusion gypsum, carries out surperficial refine after inner chamber gypsum, makes solid paraffin model; B. according to solid paraffin model shape, assembly welding sprue gate and runner system on solid paraffin model, then adhere to solid paraffin model with retinite sand; C. high temperature dewax after the solid paraffin model drying of outer attachment retinite sand is also removed solidification gypsum, obtain retinite sand external mold clearly; D. external mold is taken apart, paste the rubber cement of regulation wall thickness, then record core with retinite sand;
(5) pour into a mould, knockout and finishing: the liquid metal through melting is cast in retinite sand mould, then through supercooling, shell, polishing makes hardware;
Described retinite sand is formed by quartz sand, epoxy resin, curing agent mixed preparing; The retinite sand weight that summer uses is: quartz sand 100 parts, epoxy resin 1.6 ~ 2.0 parts, 0.6 ~ 0.9 part, curing agent; The retinite sand weight of use in winter is: quartz sand 100 parts, epoxy resin 1.8 ~ 2.2 parts, 0.7 ~ 1.0 part, curing agent.
2. hardware casting technique according to claim 1, is characterized in that: described quartz sand fineness is 70 ~ 200 orders, water content≤0.25%, clay content≤1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110143312.4A CN102806310B (en) | 2011-05-30 | 2011-05-30 | Metal component casting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110143312.4A CN102806310B (en) | 2011-05-30 | 2011-05-30 | Metal component casting process |
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| Publication Number | Publication Date |
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| CN102806310A CN102806310A (en) | 2012-12-05 |
| CN102806310B true CN102806310B (en) | 2015-07-08 |
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| CN201110143312.4A Active CN102806310B (en) | 2011-05-30 | 2011-05-30 | Metal component casting process |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103658522B (en) * | 2013-12-24 | 2015-08-12 | 江苏丰泽生物工程设备制造有限公司 | Small-sized fermentation tank precision casting technology |
| CN104070138B (en) * | 2014-07-02 | 2016-08-24 | 江苏大学 | A kind of mould for spiral crystal selector and manufacture method thereof |
| CN104525850B (en) * | 2014-12-16 | 2017-01-04 | 中国南方航空工业(集团)有限公司 | Cast pattern and the preparation method of cast pattern |
| CN106270410B (en) * | 2015-06-24 | 2018-12-18 | 天津移山工程机械有限公司 | A kind of casting technique of wheel hub |
| CN105562590B (en) * | 2015-12-23 | 2018-02-02 | 浙江斯耐尔涂装设备制造有限公司 | A kind of novel precise casting technique |
| CN107414029A (en) * | 2017-01-10 | 2017-12-01 | 马洪斌 | A kind of method for casting iron picture picture |
| CN108115093B (en) * | 2017-12-23 | 2019-09-06 | 安徽鑫宏机械有限公司 | A kind of plaster mold shell full form casting process based on composite sand mould loam core |
| CN108297604A (en) * | 2018-01-31 | 2018-07-20 | 蔡栋丞 | A kind of copper woodcarving and preparation method thereof |
| CN112719218A (en) * | 2020-12-23 | 2021-04-30 | 崔誉 | Method for manufacturing antique copper artware |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10235451A (en) * | 1997-02-26 | 1998-09-08 | Iwasaki:Kk | Mold for partial precision casting, and casting method |
| CN1951527A (en) * | 2005-10-19 | 2007-04-25 | 楠盛股份有限公司 | Method for manufacturing wax membrane of golf head |
| KR100764237B1 (en) * | 2007-06-08 | 2007-10-05 | 김진용 | Method for manufacturing metal pattern for precision casting of precious metal ornaments using natural materials |
| CN101574889A (en) * | 2009-05-19 | 2009-11-11 | 高智勇 | Mosaic craft preparation method |
| CN101579990A (en) * | 2009-05-19 | 2009-11-18 | 高智勇 | Method for fabricating mounted handicraft |
-
2011
- 2011-05-30 CN CN201110143312.4A patent/CN102806310B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10235451A (en) * | 1997-02-26 | 1998-09-08 | Iwasaki:Kk | Mold for partial precision casting, and casting method |
| CN1951527A (en) * | 2005-10-19 | 2007-04-25 | 楠盛股份有限公司 | Method for manufacturing wax membrane of golf head |
| KR100764237B1 (en) * | 2007-06-08 | 2007-10-05 | 김진용 | Method for manufacturing metal pattern for precision casting of precious metal ornaments using natural materials |
| CN101574889A (en) * | 2009-05-19 | 2009-11-11 | 高智勇 | Mosaic craft preparation method |
| CN101579990A (en) * | 2009-05-19 | 2009-11-18 | 高智勇 | Method for fabricating mounted handicraft |
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| CN102806310A (en) | 2012-12-05 |
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