CN101992265B - Method for manufacturing resin casting die used for modeling sodium silicate self-hardening sand - Google Patents

Method for manufacturing resin casting die used for modeling sodium silicate self-hardening sand Download PDF

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CN101992265B
CN101992265B CN 201010577211 CN201010577211A CN101992265B CN 101992265 B CN101992265 B CN 101992265B CN 201010577211 CN201010577211 CN 201010577211 CN 201010577211 A CN201010577211 A CN 201010577211A CN 101992265 B CN101992265 B CN 101992265B
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resin
die
resin casting
mould
casting mould
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CN101992265A (en
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孙宁涛
张勇
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Shandong Hongtai vehicle parts Co.,Ltd.
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SHANDONG HONGTAI ELECTROMECHANICAL TECHNOLOGY Co Ltd
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Abstract

The invention relates to a method for manufacturing a resin casting die used for modeling sodium silicate self-hardening sand. The method is characterized by comprising the following steps of: (1) preparing a resin prototype by rapid modeling equipment according to a three-dimensional CAD (Computer-Aided Design) model; (2) rapidly obtaining a die cavity for manufacturing a resin casting die by utilizing the made resin prototype through the rollover of a room-temperature silicified rubber die; (3) manufacturing the resin casting die by utilizing the die cavity through a manual pasting mode; and (4) making the inner cavity of the resin casting die into a hollow structure mode, leaving an air inlet at the bottom of the resin casting die and alternately drilling a plurality of air outlets along the surface of the resin casting die. The invention has the advantages of (1) being convenient to design and modify the casting appearance; (2) improving the size accuracy of the die and the surface smoothness of the die and shortening the processing cycle of the die; (3) rapidly hardening the sodium silicate self-hardening sand on the die surface to facilitate a subsequent die-drawing process; and (4) improving the surface quality of the casting and lightening the labor intensity of workers.

Description

The resin casting mould manufacture method that is used for the self-setting silicate process moulding
Technical field
The invention belongs to the Materials Processing Engineering technical field, be specifically related to a kind of resin casting mould manufacture method for the self-setting silicate process moulding.
Background technology
In the foundry technology process of self-setting silicate process moulding, the sand mold that obtains great surface quality is the basis that obtains high-quality cast steel or iron casting.The mould of the self-setting silicate process moulding of present domestic employing all is wooden model, the surface quality of wooden model is more coarse, and in the hardening process of sand mold, generally adopt the method for top blast carbon dioxide gas outside mould, cause the self-setting silicate process sclerosis of die surface bad, cause sand and mould to be bonded together, can glue lower many sands during the demoulding, destroyed sand mold, the workload that also can make the workman repair sand mold strengthens, and is difficult to obtain the sand mold of great surface quality.
Summary of the invention
The resin casting mould manufacture method that is used for the self-setting silicate process moulding that the purpose of this invention is to provide a kind of casting technique defective that can overcome the self-setting silicate process moulding, sand mold that technique obtains great surface quality simply, easily.
The present invention is achieved by the following technical solution:
Be a kind of resin casting mould manufacture method for the self-setting silicate process moulding, it is characterized in that step is as follows:
1) makes colophony prototype: draw the three-dimensional CAD model of mould according to the casting technique drawing of foundry goods, and make colophony prototype by rapid forming equipment;
2) make die cavity: the colophony prototype that utilization makes is by the die cavity that mould obtains making the resin casting mould fast that turns over of auto-vulcanization silicon rubber mould;
3) paste resin die: utilize the die cavity of the manufacturing resin casting mould that obtains, make the resin casting mould by the mode of manual pasting;
4) drive gas port and gas outlet into: the inner chamber of this resin casting mould is made into the version of hollow, leaves an air inlet in the bottom of resin casting mould, along the surface of resin casting mould every boring some gas outlets.
Before the manual pasting resin die, being coated with last layer at the die cavity inner surface first is the mixture that the wear-resisting powder of 200 orders~300 purposes forms with epoxy resin, curing agent, flexibilizer and granularity, form surface wear-resistant layer at the die cavity inner surface, the umber of said mixture is:
100 parts of epoxy resin;
33 parts in curing agent;
10 parts of flexibilizer;
55 parts of glass fiber materials;
Granularity is 200 parts of the wear-resisting powders of 200 orders~300 purposes;
Curing agent in the above-mentioned raw materials is modified multicomponent amine, and flexibilizer is dibutyl phthalate.
Wear-resisting powder is comprised of the alumina powder of 135 parts silicon carbide powder and 65 parts.
The mixture that adopts epoxy resin, curing agent, flexibilizer and glass fiber material to form during the manual pasting resin die pastes, and the portion rate of above-mentioned each raw material is:
100 parts of epoxy resin;
33 parts in curing agent;
10 parts of flexibilizer;
55 parts of glass fiber materials;
Curing agent is modified multicomponent amine in the above-mentioned raw materials, and flexibilizer is dibutyl phthalate, and glass fiber material is alkali-free glass fiber cloth.
Need first to smear the resin material that epoxy resin, curing agent, three kinds of materials of flexibilizer obtains at the die cavity inner surface of the manufacturing resin casting mould that obtains after mixing when pasting and successively paste again alkali-free glass fiber cloth.
Alkali-free glass fiber cloth of the present invention can be selected the plain of EW series, and the top layer selects thinner EW30A plain, internal layer to select thicker EW110, EW140 etc.
Principle of the present invention is as follows:
When carbon dioxide when the air inlet of foundry resin mold bottom is blown into the inner chamber of foundry resin mould of hollow, some gas outlets of foundry resin die surface will have carbon dioxide overflow and be blown into around self-setting silicate process in, the self-setting silicate process of foundry resin die surface is hardened rapidly, be convenient to the later die process that rises, can make any surface finish of the self-setting silicate process sand mold after the molding, discord foundry resin mould produces scab phenomenon, can substantially not repair the type process.
The present invention compared with prior art has following advantage:
1, adopt rapid shaping technique to come to have made things convenient for design and modification to the foundry goods profile for the preparation of the colophony prototype of making the foundry resin mould;
2, directly utilize the colophony prototype and the silicon rubber that are used for making foundry resin mould of rapid shaping preparation to turn over mold technique and utilize the materials such as epoxy resin, glass fibre, employing manual pasting technique obtains the foundry resin mould for the self-setting silicate process moulding, can improve the dimensional accuracy of mould, improve the surface smoothness of mould, shorten the process-cycle of mould;
3, the inner chamber of foundry resin mould is made into the version of hollow, leave an air inlet in the bottom of foundry resin mould, surface along the foundry resin mould gets out some gas outlets every suitable size, when carbon dioxide when the air inlet of foundry resin mold bottom is blown into the inner chamber of foundry resin mould of hollow, some gas outlets of foundry resin die surface will have carbon dioxide overflow and be blown into around self-setting silicate process in, the self-setting silicate process of foundry resin die surface is hardened rapidly, be convenient to the later die process that rises, can make any surface finish of the self-setting silicate process sand mold after the molding, discord foundry resin mould produces scab phenomenon, can substantially not repair the type process;
4, utilize this hollow that is used for the self-setting silicate process moulding to disperse air blowing resin casting mould, after the moulding molding, can obtain the high sand mold of surface smoothness, after the liquid metals cast, can obtain the foundry goods such as the high cast steel of surface quality, cast iron.The use of this resin casting mould can improve the surface quality of foundry goods, reduces workman's labour intensity, has obvious technical advantage, and economic and social benefit is remarkable.
The specific embodiment
Below be to make the concrete operation step that the hollow that is used for the self-setting silicate process moulding is disperseed air blowing resin casting mould:
1, makes for making the used colophony prototype of foundry resin mould: utilize the design size of foundry goods and the three-dimensional CAD model that 3D sculpting software (such as Pro/E) obtains the foundry resin mould, and made for the colophony prototype of making the foundry resin mould by rapidform machine.
2, obtain foundry resin mould for the self-setting silicate process moulding: utilize the colophony prototype that makes by the die cavity that mould obtains making the resin casting mould fast that turns over of auto-vulcanization silicon rubber mould; For satisfying the wear-resisting requirement of mould, can at first be coated with on the surface of die cavity the mixture that last layer forms with epoxy resin, curing agent, flexibilizer and wear-resisting powder, the portion rate of said mixture is: 100 parts of epoxy resin; 33 parts in curing agent; 10 parts of flexibilizer; 200 parts of wear-resisting powders.Curing agent in the above-mentioned raw materials is modified multicomponent amine, and flexibilizer is dibutyl phthalate, and wear-resisting powder comprises 135 parts silicon carbide powder and 65 parts alumina powder, and the granularity of above-mentioned two kinds of powder is all in 200 orders~300 order scopes.
The mixture that adopts epoxy resin, curing agent, flexibilizer and glass fiber material to form during the manual pasting resin die pastes, and the portion rate of above-mentioned each raw material is: 100 parts of epoxy resin; 33 parts in curing agent; 10 parts of flexibilizer; 55 parts of glass fiber materials.Curing agent is modified multicomponent amine in the above-mentioned raw materials, and flexibilizer is dibutyl phthalate, and glass fiber material is alkali-free glass fiber cloth.
Need first to smear the resin material that epoxy resin, curing agent, three kinds of materials of flexibilizer obtains at the die cavity inner surface of the manufacturing resin casting mould that obtains after mixing when pasting and successively paste again alkali-free glass fiber cloth.
Alkali-free glass fiber cloth of the present invention can be selected the plain of EW series, and the top layer selects thinner EW30A plain, internal layer to select thicker EW110, EW140 etc.
What 3, obtain hollow has the foundry resin mould of some gas outlets with the surface: the version that the inner chamber of this foundry resin mould is made into hollow, leave an air inlet in the bottom of foundry resin mould, get out some gas outlets along the surface of foundry resin mould every suitable size.
4, obtain the high self-setting silicate process sand mold of surface smoothness: the inner chamber that carbon dioxide is blown into the foundry resin mould of hollow through the air inlet of foundry resin mold bottom, some gas outlets of foundry resin die surface will have carbon dioxide overflow and be blown into around self-setting silicate process in, the self-setting silicate process of foundry resin die surface is hardened rapidly, be convenient to the later die process that rises, can make any surface finish of the self-setting silicate process sand mold after the molding, discord foundry resin mould produces scab phenomenon, can substantially not repair the type process.
5, obtain the foundry goods such as the high cast steel of surface quality, cast iron: utilize this hollow that is used for the self-setting silicate process moulding to disperse air blowing resin casting mould, after the moulding molding, the high sand mold of surface smoothness can be obtained, after the liquid metals cast, the foundry goods such as the high cast steel of surface quality, cast iron can be obtained.

Claims (3)

1. resin casting mould manufacture method that is used for the self-setting silicate process moulding, step is as follows: 1) make colophony prototype: draw the three-dimensional CAD model of mould according to the casting technique drawing of foundry goods, and make colophony prototype by rapid forming equipment; 2) make die cavity: the colophony prototype that utilization makes is by the die cavity that mould obtains making the resin casting mould fast that turns over of auto-vulcanization silicon rubber mould; 3) paste resin die: utilize the die cavity of the manufacturing resin casting mould that obtains, make the resin casting mould by the mode of manual pasting; 4) drive gas port and gas outlet into: the version that the inner chamber of this resin casting mould is made into hollow, leave an air inlet in the bottom of resin casting mould, along the surface of resin casting mould every boring some gas outlets, it is characterized in that: before the manual pasting resin die, being coated with last layer at the die cavity inner surface first is the mixture that the wear-resisting powder of 200 orders~300 purposes forms with epoxy resin, curing agent, flexibilizer and granularity, form surface wear-resistant layer at the die cavity inner surface, the umber of said mixture is:
100 parts of epoxy resin;
33 parts in curing agent;
10 parts of flexibilizer;
Granularity is 200 parts of the wear-resisting powders of 200 orders~300 purposes;
Curing agent in the above-mentioned raw materials is modified multicomponent amine, and flexibilizer is dibutyl phthalate.
2. the resin casting mould manufacture method for the self-setting silicate process moulding according to claim 1 is characterized in that wear-resisting powder is comprised of 135 parts silicon carbide powder and 65 parts alumina powder.
3. resin casting mould manufacture method that is used for the self-setting silicate process moulding, step is as follows: 1) make colophony prototype: draw the three-dimensional CAD model of mould according to the casting technique drawing of foundry goods, and make colophony prototype by rapid forming equipment; 2) make die cavity: the colophony prototype that utilization makes is by the die cavity that mould obtains making the resin casting mould fast that turns over of auto-vulcanization silicon rubber mould; 3) paste resin die: utilize the die cavity of the manufacturing resin casting mould that obtains, make the resin casting mould by the mode of manual pasting; 4) drive gas port and gas outlet into: the version that the inner chamber of this resin casting mould is made into hollow, leave an air inlet in the bottom of resin casting mould, along the surface of resin casting mould every boring some gas outlets, it is characterized in that: need during the manual pasting resin die first to smear the resin material that epoxy resin, curing agent, three kinds of materials of flexibilizer obtain at the die cavity inner surface of the manufacturing resin casting mould that obtains after mixing, successively paste alkali-free glass fiber cloth, the umber of above-mentioned each raw material is again:
100 parts of epoxy resin;
33 parts in curing agent;
Flexibilizer l0 part;
55 parts of glass fiber materials;
Curing agent is modified multicomponent amine in the above-mentioned raw materials, and flexibilizer is dibutyl phthalate.
CN 201010577211 2010-12-07 2010-12-07 Method for manufacturing resin casting die used for modeling sodium silicate self-hardening sand Active CN101992265B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102658352A (en) * 2012-03-18 2012-09-12 山东理工大学 Method for manufacturing high temperature resistant casting resin-die
CN103611878A (en) * 2013-11-18 2014-03-05 山东宏泰机电科技有限公司 Rapid manufacturing method of resin casting mould based on laminated object manufacturing (LOM) prototype
CN103752766B (en) * 2014-02-13 2015-12-30 山东理工大学 A kind of method for fast mfg of resin casting mould
CN103801653A (en) * 2014-02-14 2014-05-21 山东旗开重型机械有限公司 Rapid manufacturing method of resin casting mold
CN104707937B (en) * 2015-02-13 2017-01-11 广东峰华卓立科技股份有限公司 Method for preparing sand mold by using reverse mold and sand mold preparation method
CN105014008B (en) * 2015-07-31 2017-05-17 宁夏共享模具有限公司 Female-mould-free resin mould and manufacturing method thereof
CN106077426A (en) * 2016-07-29 2016-11-09 无锡市三峰仪器设备有限公司 A kind of instrument Foundry Coated Sand of resistance to water soak

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101201677A (en) * 2006-12-13 2008-06-18 英业达股份有限公司 Wind-guiding structure for radiating fan
CN101554645A (en) * 2009-04-29 2009-10-14 山东理工大学 Manufacturing method of lost foam casting foaming mold
CN101628329A (en) * 2009-07-30 2010-01-20 大同北方天力增压技术有限公司 Production process adopting silicon rubber gypsum precision casting and used for hydraulic bending moment guide wheel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101201677A (en) * 2006-12-13 2008-06-18 英业达股份有限公司 Wind-guiding structure for radiating fan
CN101554645A (en) * 2009-04-29 2009-10-14 山东理工大学 Manufacturing method of lost foam casting foaming mold
CN101628329A (en) * 2009-07-30 2010-01-20 大同北方天力增压技术有限公司 Production process adopting silicon rubber gypsum precision casting and used for hydraulic bending moment guide wheel

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