CN103357818B - A kind of metastasis model method casting method - Google Patents
A kind of metastasis model method casting method Download PDFInfo
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- CN103357818B CN103357818B CN201310315578.1A CN201310315578A CN103357818B CN 103357818 B CN103357818 B CN 103357818B CN 201310315578 A CN201310315578 A CN 201310315578A CN 103357818 B CN103357818 B CN 103357818B
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Abstract
The invention discloses a kind of metastasis model method casting method, first turn over silicone rubber model processed, make cavity version, on cavity version, after overlay tree sand fat, sand mold external form is made in the demoulding, grout hole is vertically offered in bottom surface to sand mold external form, silicone rubber model is buckled in die cavity, from grout hole perfusion ceramic slurry, silicone rubber model is taken out Deng after ceramic slurry sclerosis, obtain ceramic profile, upset sand mold external form, silicone rubber model is put in die cavity, second half sandbox on upper cap, make sand mold inner mold, open sandbox, take out silicone rubber model, make running gate system, pottery profile surface acetylene torch fire-cures, inner mold inner surface brushing alcohol paint, light baking, reinforce good cast, obtain cast product.The present invention utilizes the pliability of silicone rubber model to be convenient to the demoulding, and the micro-line skin texture of not fragile sandbox, utilize the plasticity of ceramic slurry can copy micro-line skin texture completely, silicone rubber model can reuse.
Description
Technical field
The present invention relates to casting method, particularly in Art Casting field, middle smallclothes art work sand mould casting method.
Background technology
For a long time, casting industry particularly Art Casting industry sand mold cannot copy completely to fine line, effect is very not undesirable, many fine lines are easily damaged when model takes out, in order to better polygram casting product, overcome the deficiency of common moulding, need the technology upgraded to change the status quo.
Summary of the invention
Technical problem to be solved by this invention is that to overcome fine line mould surface skin texture print effect in existing casting process poor, and the shaping rear demoulding of fine line sand mold damages the defect on moulding surface, provides a kind of metastasis model method casting method.
In order to solve above technical problem, the technical solution used in the present invention is:
A kind of metastasis model method casting method, comprises step: (1) is first turned over model and made silicon rubber liner gypsum mold, turns over silicone rubber model processed with silicon rubber liner gypsum mold; (2) make cavity version, on cavity version, after overlay tree sand fat, sand mold external form is made in the demoulding, and the cavity dimension of sand mold external form is greater than silicone rubber model, and grout hole is vertically offered in bottom surface to sand mold external form; (3) silicone rubber model is buckled in die cavity, from grout hole perfusion ceramic slurry, take out silicone rubber model after waiting ceramic slurry to harden, obtain ceramic profile; (4) sand mold external form is overturn, in die cavity, put into silicone rubber model, second half sandbox on upper cap, makes sand mold inner mold, open sandbox, take out silicone rubber model, make running gate system, ceramic profile surface acetylene torch fire-cures, inner mold inner surface brushing alcohol paint, light baking, reinforce good cast, obtain cast product.
As preferred technical scheme, in step (2), the mold cavity surface of sand mold external form is through roughening process.
As preferred technical scheme, in step (3), take out after silicone rubber model, blow the floating thing in surface off with compressed gas, to ignite the alcohol in ceramic profile with burning things which may cause a fire disaster.
The present invention also provides a kind of ceramic slurry for above method simultaneously, and it comprises the component of following weight proportion, bauxite sand powder 100 parts, hydrolyzate 40 parts, curing agent 0.4-0.5 part; Wherein, curing agent by ammonium acetate and distilled water formulated with volume ratio 1:2; Hydrolyzate is formulated by the component of following weight proportion, silester 80 parts, distilled water 8 parts, ethanol 12 parts, acidifying water 1 part, this acidifying water by hydrochloric acid and distilled water formulated with volume ratio 15:85.
As preferred technical scheme, bauxite sand powder is made into according to weight ratio 35:65 by 70-100 order sand and 200 order powder.
As preferred technical scheme, also comprise defoamer, every kg aluminium alumina sand powder adds 3.5ml defoamer.
Compared with prior art, the present invention has following beneficial effect: (1) utilizes the pliability of silicone rubber model to be convenient to the demoulding, and the micro-line skin texture of not fragile sandbox.(2) plasticity of ceramic slurry is utilized can to copy micro-line skin texture completely.(3) silicone rubber model can reuse.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Accompanying drawing 1 is that model turns over silicon rubber liner gypsum mold generalized section processed;
Accompanying drawing 2 is generalized sections when turning over silicone rubber model processed;
Accompanying drawing 3 is silicone rubber model generalized sections;
Accompanying drawing 4 is cavity version generalized sections;
Accompanying drawing 5 is that cavity version turns over sand mold external form generalized section processed;
Accompanying drawing 6 makes sand mold external form inner surface and opens grout hole generalized section;
Accompanying drawing 7 is generalized sections when making ceramic profile;
Accompanying drawing 8 is generalized sections when making sand mold inner mold;
Accompanying drawing 9 is the generalized sections after interior external form mould assembly;
Accompanying drawing 10 is cast product generalized sections.
In figure, 1-model, 2-silicon rubber liner gypsum mold, 3-silicone rubber model, 4-cavity version, 5-sand mold external form, 6-die cavity, 7-grout hole, 8-pottery profile, 9-sand mold inner mold, 10-cast product, 11-cup, 201-silicon rubber liner, 202-gypsum.
Detailed description of the invention
The invention provides a kind of metastasis model method casting method, comprise the following stated step.
One, first turn over model 1 and make silicon rubber liner gypsum mold 2, turn over silicone rubber model 3 processed with silicon rubber liner gypsum mold 2.As shown in Figure 1, model 1 removing surface is clean, brush releasing agent, brush silicon rubber liner 201, Plastering 202, takes off after reinforcing, obtains silicon rubber liner gypsum mold 2, as shown in Figure 2, turns over high quality silicon rubber cast 3(Fig. 3 processed with this mould).
Two, make cavity version 4, on cavity version 4, after overlay tree sand fat, sand mold external form 5 is made in the demoulding, and die cavity 6 size of sand mold external form 5 is greater than silicone rubber model 3, and grout hole 7 is vertically offered in bottom surface to sand mold external form 5.
As Fig. 4, cavity version 4 is close with model 1 physical dimension, is placed on the steel plate of level by cavity version 4, by half sandbox button thereon, and covering resin sand, in layer tamping is made into resin sand sand mold external form 5(Fig. 5).
As Fig. 6, expand at the cavity inner surface cutter of sand mold external form 5, make its each border extended 1-2cm form die cavity 6, and make die cavity 6 surface of sand mold external form 5 through roughening process.Grout hole 7 can be obtained perpendicular to the little sand mold external form 5 in the street 2-3cm that holes.
Three, as shown in Figure 7, silicone rubber model 3 is buckled in die cavity 6, pour into ceramic slurry from grout hole 7, take out silicone rubber model 3 after waiting ceramic slurry to harden, obtain ceramic profile 8.
First ceramic slurry to be prepared:
1, material installation:
1. refractory material a. refractory powder (plumbous calcined bauxite in powder 200 order) b. fire sand material (bauxite sand 70 ~ 100 order)
2. bonding agent: ethyl silicate 40;
3. curing agent: ammonium acetate;
4. catalyst: 36 ~ 38% hydrochloric acid (HCl) (hydrochloric acid: distilled water=15: 85);
5. medium: ethanol (chemically pure reagent);
6. diluent: distilled water;
7. defoamer: n-octyl alcohol;
8. parting compound: vaseline (adding kerosene cutback)
9. equipment: a. graduated cylinder, measuring cup, volumetric flask, pipette, plastic tub, Plastic Drum, the little platform balance of plastics wooden dipper b..
2. component and content
It comprises the component of following weight proportion, bauxite sand powder 100 parts, hydrolyzate 40 parts, curing agent 0.4-0.5 part; Wherein, curing agent by ammonium acetate and distilled water formulated with volume ratio 1:2; Hydrolyzate is formulated by the component of following weight proportion, silester 80 parts, distilled water 8 parts, ethanol 12 parts, acidifying water 1 part, this acidifying water by hydrochloric acid and distilled water formulated with volume ratio 15:85.
Can also add defoamer in above component, every kg aluminium alumina sand powder adds 3.5ml defoamer.
3. compound method:
(1) hydrolyzate preparation
According to aequum by proportioning configuration hydrolyzate, add distilled water in ethanol, in order to be hydrolyzed fully, then add acidifying water, stir 1 ~ 2 minute, thread adds silester and stirs 30 minutes, leaves standstill.During configuration, solution temperature remains on 37 DEG C ± 5 DEG C, and the container that the hydrolyzate prepared pours sealing into is put, and under room temperature, (temperature is at about 20 DEG C) are at least placed after 2 ~ 3 hours and could be used, and make hydration reaction abundant, solution temperature is identical with room temperature.
(2) preparation of curing agent
According to weather conditions, temperature height, general control between to 1% ~ 1.25% of hydrolyzate quality, the adjustment of concrete condition appropriateness.
3, the preparation of ceramic slurry
According to consumption configuration bauxite sand powder, wherein, 70-100 order sand and 200 order powder are made into according to weight ratio 35:65.In the sand powder configured, add hydrolyzate, constantly stir, add n-octyl alcohol defoamer, stir, without precipitation, bubble-free.Add curing agent again to continue to stir 1-2 minute.
Provide a kind of concrete proportioning table below, its component and content are: bauxite sand powder 100 grams, hydrolyzate 40 grams, curing agent 0.4-0.5 gram; Wherein, curing agent by ammonium acetate and distilled water formulated with volume ratio 1:2; Hydrolyzate is formulated by the component of following weight proportion, silester 80 grams, distilled water 8 grams, ethanol 12 grams, acidifying water 1 gram, this acidifying water by hydrochloric acid and distilled water formulated with volume ratio 15:85.Bauxite sand powder is made into according to weight ratio 35:65 by 70-100 order sand and 200 order powder.Defoamer is added in the ratio of 3.5ml/1kg bauxite sand powder.
Continue stirring after adding curing agent 1 ~ 2 minute, when having certain viscosity etc. feel, ceramic mould slip is injected die cavity 6 from grout hole 7, in process, slightly shakes sand mold, allow slip be full of whole die cavity 6.The slip state change of grout hole 7 is observed in cementing sclerosis after 15 ~ 20 minutes, when to reach some strength be elastic stage to ceramic slurry, upset sand mold external form, pottery profile 8 lies on steel plate upward, after taking out silicone rubber model 3, blow the floating thing in surface off with compressed gas, to ignite the alcohol in ceramic profile 8 with burning things which may cause a fire disaster.
Four, upset sand mold external form 5, puts into silicone rubber model 3 in die cavity 6, second half sandbox on upper cap, make sand mold inner mold 9(Fig. 8), open sandbox, take out silicone rubber model 3, make running gate system, pottery profile surface acetylene torch fire-cures, and inner mold inner surface brushing alcohol paint, lights baking, reinforce well and carry out pouring into a mould (Fig. 9) from cup 11, obtain cast product 10(Figure 10).
Claims (5)
1. a metastasis model method casting method, is characterized in that comprising step: (1) is first used model (1) to turn over and made silicon rubber liner gypsum mold (2), turns over silicone rubber model processed (3) with silicon rubber liner gypsum mold (2); (2) cavity version (4) is made, after the upper overlay tree sand fat of cavity version (4), sand mold external form (5) is made in the demoulding, die cavity (6) size of sand mold external form (5) is greater than silicone rubber model (3), sand mold external form (5) bottom surface is vertically offered grout hole (7); (3) silicone rubber model (3) is buckled in die cavity (6), from grout hole (7) perfusion ceramic slurry, take out silicone rubber model (3) after waiting ceramic slurry to harden, obtain ceramic profile (8); (4) sand mold external form (5) is overturn, in die cavity (6), put into silicone rubber model (3), second half sandbox on upper cap, make sand mold inner mold (9), open sandbox, take out silicone rubber model (3), make running gate system, ceramic profile surface acetylene torch fire-cures, inner mold inner surface brushing alcohol paint, light baking, reinforce good cast, obtain cast product (10);
Described ceramic slurry, comprises the component of following weight proportion, bauxite sand powder 100 parts, hydrolyzate 40 parts, curing agent 0.4-0.5 part; Wherein, curing agent by ammonium acetate and distilled water formulated with volume ratio 1:2; Hydrolyzate is formulated by the component of following weight proportion, silester 80 parts, distilled water 8 parts, ethanol 12 parts, acidifying water 1 part, this acidifying water by hydrochloric acid and distilled water formulated with volume ratio 15:85.
2. method according to claim 1, is characterized in that: in step (2), and die cavity (6) surface of sand mold external form (5) is through roughening process.
3. method according to claim 1 and 2, is characterized in that: in step (3), after taking out silicone rubber model (3), blows the floating thing in surface off with compressed gas, to ignite the alcohol in ceramic profile (8) with burning things which may cause a fire disaster.
4. method according to claim 1, is characterized in that: bauxite sand powder is made into according to weight ratio 35:65 by 70-100 order sand and 200 order powder.
5. method according to claim 1, is characterized in that: also comprise defoamer, and every kg aluminium alumina sand powder adds 3.5ml defoamer.
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| 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 |
| CN109550889B (en) * | 2017-09-25 | 2024-06-28 | 南京龙宁机床装备有限公司 | Main shaft ram lost foam and method for casting main shaft ram by using same |
| CN108789771A (en) * | 2018-06-14 | 2018-11-13 | 郑州远东耐火材料有限公司 | A kind of preparation method of hot investment casting fused cast refractories sand mo(u)ld |
| CN109014083B (en) * | 2018-08-27 | 2020-02-21 | 共享智能铸造产业创新中心有限公司 | Filling and coating method for integral sand mold of casting with complex structure |
| CN109047656B (en) * | 2018-09-26 | 2020-09-08 | 上海艺极模具有限公司 | Manufacturing method of main mold of foaming mold and foaming mold |
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| US4682643A (en) * | 1983-10-20 | 1987-07-28 | Nu Con Corporation | Method of producing molded parts and casting pattern therefor |
| CN1270859A (en) * | 2000-04-29 | 2000-10-25 | 华中理工大学 | Fast metal mold producing technology |
| CN1385265A (en) * | 2002-03-26 | 2002-12-18 | 华中科技大学 | Technology for precision casting metal die and parts |
| CN1721206A (en) * | 2004-07-16 | 2006-01-18 | 朱勇胜 | Process of making low-melting point metal hollow artwork |
| CN1883965A (en) * | 2006-06-23 | 2006-12-27 | 清华大学 | Method for casting glass artwork by using water-soluble ceramic mould |
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Address after: 044402 Yuda Bronze Culture Industrial Park, Xia County, Yuncheng City, Shanxi Province Patentee after: SHANXI YUDA BRONZE CULTURE & ART CO.,LTD. Address before: 044402 Yuda Bronze Culture Industrial Park, Xia County, Yuncheng City, Shanxi Province Patentee before: Shanxi Yuda Group Co.,Ltd. |
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