CN1033744C - Foundry method - Google Patents
Foundry method Download PDFInfo
- Publication number
- CN1033744C CN1033744C CN 94108041 CN94108041A CN1033744C CN 1033744 C CN1033744 C CN 1033744C CN 94108041 CN94108041 CN 94108041 CN 94108041 A CN94108041 A CN 94108041A CN 1033744 C CN1033744 C CN 1033744C
- Authority
- CN
- China
- Prior art keywords
- sand
- mold
- heated
- film coating
- wet film
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
The present invention relates to a novel casting method. The present invention is characterized in that wet precoated sand is used, and a polyethylene foam plastic mold or a wax mold is directly used. Firstly, the mold is arranged in a sand box, and then, the wet precoated sand is fully filled in the box and is put in an oven at the temperature of 100 to 300 DEG C to be heated and baked by 15 to 60 min; the foam plastic or wax mold is heated for gasification, and the wet precoated sand is heated for solidification to form a hard thermosetting shell body, namely a shell-shaped casting mold; then, molten metal is cast in the shell body to form a required casting. The novel casting method has the advantages of convenient operation, high production efficiency, short production period, convenient sand removal, high casting dimension precision, smooth surfaces and little environment pollution, expensive metal molds and equipment are not needed, the shell mold can be stored for a long time, can be manually molded and can also be mechanically molded, and the novel casting method can produce various complicated precise castings.
Description
The present invention relates to a kind of casting mold manufacture method.
Precoated sand crab process, casting method with the vanishing pattern, methods such as lost wax process are adopted in hot investment casting at present usually.Though the precoated sand crab process is easy to operate, the production efficiency height, shell mould intensity height, cast(ing) surface is bright and clean, and sand removal is easy, but needs special equipment and metal die, equipment investment is big, metal die expense costliness also needs to make up and could form complete casting mold behind the mould assembly and cast, and causes the casting dimension error easily.Though casting method with the vanishing pattern is simple to operate, sand removal does not easily need the molding mould assembly, production casting dimension accuracy height, but the residue during owing to cast after the gasification of plastics mould is difficult to get rid of, and causes casting surface defect easily, only is suitable for producing the better simply foundry goods of some shapes.Though lost wax process production casting dimension accuracy height, any surface finish, and can produce various complicated precision castings, and its technical process need be smeared refractory material from level to level, and is bothersome time-consuming, complicated operation, and the production cycle is long.
Purpose of the present invention is exactly the shortcoming that overcomes above-mentioned several castings, collection precoated sand crab process, casting method with the vanishing pattern, the advantage of lost wax process is an one, a kind of not only production casting dimension accuracy height is provided, any surface finish, and easy to operate, with short production cycle, sand removal precoated sand disappearance easily formwork type method, but this method hand moulding, but also machine moulding can be cast the complicated precision castings of various materials.
The objective of the invention is to realize by following content.Casting mold manufacture method of the present invention is to use a kind of wet film coating sand and directly adopts the polystyrene foam plastics mould of casting method with the vanishing pattern or the wax-pattern of lost wax process; at first mould is placed in the sandbox; and then above-mentioned wet film coating sand is filled out case enrich; put it into subsequently in 100-300 ℃ the baking oven heated baking 15-60 minute; the gasification of being heated of foamed plastics or wax-pattern; wet film coating sand then is heated and solidify to form hard thermosetting housing; it is the shelly casting mold; molten metal is poured in it, form required foundry goods.Described wet film coating sand comprises roughing sand, resin compound and curing agent, above-mentioned attached lipoprotein mixture comprises phenolic resins 58-85% (percentage by weight), epoxy resin 3-17%, organic ester 3-10%, organosilicon 5-15%, starch 0.5-1%, clay 0.1-0.5%, potter's clay 0.1-0.5%, graphite powder 0.3-1%, and curing agent is a methenamine.The addition of resin compound is the 1-4% of roughing sand weight, and the addition of curing agent is the 5-20% of resin compound weight.Wet film coating sand used in the present invention obtains by following method, roughing sand is heated to 100 ℃, remove moisture content, after roughing sand moisture content is less than 1%, roughing sand is positioned over mixed grind in the puddle mixer of room temperature, in mixed grind, adds resin compound, preferably the addition of resin compound is the heavy 1-4% of roughing sand, after being mixed, add urotropine firming agent (as hexa) again, the addition of curing agent is the 5-20% of resin compound weight, pour out kolleroang after being mixed, obtain wet film coating sand, described resin compound comprises phenolic resins 58-85% (percentage by weight), epoxy resin 3-17%, organic ester 3-10%, organosilicon 5-15%, starch 0.5-1%, clay 0.1-0.5%, potter's clay 0.1-0.5%, graphite powder 0.3-1%.Described this wet film coating sand has good wet strength, mouldability and flowability, and long storage period, arranged, its curing rate is faster than the gasification rate of polystyrene foam plastics or wax-pattern.
Method collection precoated sand crab process of the present invention, the advantage of disappearance mould and lost wax process is in one, and is easy to operate, the production efficiency height, with short production cycle, sand removal is convenient, need not use expensive metal die and equipment, the casting dimension accuracy height, any surface finish, environmental pollution is little, shell mould can long-term storage, but hand moulding, but also machine moulding can be produced various complicated precision castings.
Claims (2)
1. a casting mold manufacture method is characterized in that using a kind of wet film coating sand and directly adopts polyethylene foams mould or wax-pattern; At first mould is placed in the sandbox, then wet film coating sand being filled out case enriches, put it into subsequently in 100-300 ℃ the baking oven heated baking 15-60 minute, the gasification of being heated of foamed plastics or wax-pattern, wet film coating sand then is heated and solidify to form hard thermosetting housing, it is the shelly casting mold, described wet film coating sand comprises roughing sand, resin compound and curing agent, above-mentioned resin compound comprises (by weight percentage) phenolic resins 58-85%, epoxy resin 3-17%, organic ester 3-10%, organosilicon 5-15%, starch 0.5-1%, clay 0.1-0.5%, potter's clay 0.1-0.5%, graphite powder 0.3-1%, curing agent are methenamine.
2. casting mold manufacture method according to claim 1, the addition that it is characterized in that resin compound is the 1-4% of roughing sand weight, the addition of curing agent is the 5-20% of resin compound weight.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 94108041 CN1033744C (en) | 1994-08-05 | 1994-08-05 | Foundry method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 94108041 CN1033744C (en) | 1994-08-05 | 1994-08-05 | Foundry method |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1102606A CN1102606A (en) | 1995-05-17 |
CN1033744C true CN1033744C (en) | 1997-01-08 |
Family
ID=5033314
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 94108041 Expired - Fee Related CN1033744C (en) | 1994-08-05 | 1994-08-05 | Foundry method |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1033744C (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1061274C (en) * | 1997-07-14 | 2001-01-31 | 无锡市永鑫实型铸造厂 | Technological method for casting low carbon steel by gasifiable pattern |
CN1061273C (en) * | 1997-07-14 | 2001-01-31 | 无锡市永鑫实型铸造厂 | Technological process of gasified mould casting for high-and midium-chromium heat-resisting and wear-resisting casting |
CN102555044B (en) * | 2010-12-30 | 2014-06-04 | 北京仁创铸造有限公司 | Method for preparing sand-base water-permeable brick |
CN102248124B (en) * | 2011-06-17 | 2012-12-26 | 河南豫兴铸造有限公司 | Technology for molding wax mould of single cast |
CN102366821A (en) * | 2011-10-24 | 2012-03-07 | 大连交通大学 | Green lost foam casting technology |
CN102632196B (en) * | 2012-05-04 | 2015-02-11 | 刘玉满 | Lost foam casting (LFC) method without roasting by using precise paraffin wax model sample and high-performance coating shell mould |
CN102672104A (en) * | 2012-05-29 | 2012-09-19 | 刘翔 | Precision casting method for pouring evanescent mold through high-performance coating foam and mold laminating paraffin |
CN103506573B (en) * | 2013-09-18 | 2015-06-24 | 宁夏共享集团有限责任公司 | Casting method for complex sand core integrating |
CN103736910A (en) * | 2013-12-26 | 2014-04-23 | 柳州正菱集团有限公司 | Casting method |
CN104999033A (en) * | 2015-07-15 | 2015-10-28 | 湖北永浩铸业科技有限公司 | Precoated sand shell lost foam precise casting method |
CN106493310A (en) * | 2016-10-14 | 2017-03-15 | 安徽大天铸业有限责任公司 | Shell casting method is covered in a kind of tide mould sand high pressure moulding |
CN107716860A (en) * | 2017-09-01 | 2018-02-23 | 东风精密铸造安徽有限公司 | A kind of coke guide side plate lost foam casting process method |
CN107617722A (en) * | 2017-09-26 | 2018-01-23 | 安徽伟工机械科技有限公司 | A kind of casting method using lost foam casting workpiece |
CN107598087A (en) * | 2017-09-26 | 2018-01-19 | 安徽伟工机械科技有限公司 | A kind of casting method of lost foam casting stainless steel work-piece |
CN110430716A (en) * | 2019-06-30 | 2019-11-08 | 西南电子技术研究所(中国电子科技集团公司第十研究所) | The preparation method of efficient soaking plate |
CN111804872A (en) * | 2020-06-18 | 2020-10-23 | 东风精密铸造有限公司 | Rapid forming method for casting polystyrene coated sand mold shell by investment casting |
-
1994
- 1994-08-05 CN CN 94108041 patent/CN1033744C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1102606A (en) | 1995-05-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1033744C (en) | Foundry method | |
CN101462160B (en) | Full-mold casting technique of resin-bonded sand | |
CN102974762A (en) | Vacuum evanescent die casting process | |
CN102921902B (en) | Composite shaping technique method of iron pattern coated sand and iron type core assembly | |
CN105382206A (en) | Casting mold and forming method for box body of gearbox | |
ATE509714T1 (en) | METHOD FOR PRODUCING A CASTING | |
CN102806310B (en) | Metal component casting process | |
CN107737873A (en) | A kind of cavityless casting method of Large Grinder Body | |
US3216074A (en) | Method for making shaped foundry articles | |
CN101417327A (en) | Vanishing die forging technique | |
CN102039372A (en) | Lost foam casting method | |
CN1033743C (en) | Wet filmcoating sand mould material and prodn. thereof | |
CN101480701A (en) | Cold-hot combined mold core forming process | |
CN106238680A (en) | A kind of lost foam casting process of automobile saddle-type traction base | |
CN102125980A (en) | Casting moulding process for preparing large ship propeller from synthetic resin | |
CN104874731A (en) | Method for casting large-scale bucket tooth casting by using lost foam | |
CN101954458B (en) | Method for manufacturing crushing wall or rolling mortar wall pouring system of cone crusher during sand-coated casting of inner/outer metal molds | |
CN110102711A (en) | The manufacturing method of steel-casting moulding process casting mold | |
CN101733362A (en) | Method for casting metallic mold | |
RU2619548C2 (en) | Manufacturing method of casts by gasified models | |
CN1153090A (en) | Ice mould casting method for metals | |
CN102310163A (en) | Lost foam casting method of engine gear chamber | |
CN101985158B (en) | Method for casting manganese steel broken wall or mortar-rolling wall of cone crusher by internal and external metal molds sand-lining | |
RU171686U1 (en) | PROFIT MODEL ON THE BASIS OF FOAM POLYSTYRENE FOR CASTING ON GASIFIED MODELS | |
CN105364008A (en) | Evaporative pattern casting process |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C57 | Notification of unclear or unknown address | ||
DD01 | Delivery of document by public notice |
Addressee: Qin Shengyi Document name: Notification of Termination of Patent Right |
|
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |