CN102806304A - Shell material for fused mould casting - Google Patents
Shell material for fused mould casting Download PDFInfo
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- CN102806304A CN102806304A CN2011101447574A CN201110144757A CN102806304A CN 102806304 A CN102806304 A CN 102806304A CN 2011101447574 A CN2011101447574 A CN 2011101447574A CN 201110144757 A CN201110144757 A CN 201110144757A CN 102806304 A CN102806304 A CN 102806304A
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- quartz sand
- shell
- shell material
- aluminium vanadine
- mould casting
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Abstract
The invention relates to a shell material for fused mould casting, which comprises 100# quartz sand, 20#-30# quartz sand and bauxite. A surface solid material comprises the following components by weight percent: 55%-75% of 100# quartz sand, 20%-35% of 20#-30# quartz sand and 3%-10% of bauxite.
Description
Technical field
The invention belongs to the model casting field, be meant a kind of investment casting shell material especially.
Background technology
In middle low temperature model casting field, the quartz sand that adopts 100# usually is as coverstock material.The advantage that quartz sand is done shell is that retained strength is low, low price, but shortcoming is to be prone to produce crystal transfer, and the line quantitative changeization is big, and heat endurance and elevated temperature strength are low.Therefore using quartz sand to do the enterprise of shell fully, the rate of burning with anger generally surpasses 15%.How to improve the intensity of shell, reduce the line quantitative change change into in, the low temperature model casting technical problem of capturing in advance.
In some high temperature model castings, can use exotic material to join in the quartz sand, as the back-up coat composition material, can improve fire-resistant degree and investment shell intensity.In these technology, adding is between the 60%-90% weight ratio like clinker of kaolin, and the amount of using the aluminium vanadine is also more than 60%.
Selecting for use of these refractory materials; Though can solve the intensity of shell and reduce the line quantitative changeization, the consumption of these materials makes this proportioning material can only be used for the casting field of high accuracy, valuable alloy etc.; For middle low temperature model casting, its cost just makes this material to be applied.
Have technology to think again, through adopting quartz sand thickness bimodal particle proportioning in the investment precoat, the shell inner surface densification that makes is smooth, and the surface quality of foundry goods is improved.But the shortcoming of this coverstock material is that though can improve the surface quality of foundry goods, to the line quantitative changeization of shell, the problem that thermal shock resistance and elevated temperature strength are low has no idea to solve.
Therefore, it is low to seek a kind of cost, can improve surface quality of continuous castings simultaneously, improves the line quantitative changeization of shell, and thermal shock resistance and investment shell intensity are one of the object of the invention.
Summary of the invention
It is low to the objective of the invention is to propose a kind of cost, can improve surface quality of continuous castings simultaneously, improves the line quantitative changeization of shell, and the material of thermal shock resistance and investment shell intensity is one of the object of the invention.
The present invention realizes through following scheme:
A kind of investment casting shell coverstock material includes 100# quartz sand, 20#-30# quartz sand and aluminium vanadine; Each percentage by weight of forming was during described real material formed: 100# quartz sand is 55%-75%, and 20#-30# quartz sand is 20%-35%, and the aluminium vanadine is 3%-10%.
For realizing above-mentioned purpose as further improving, each percentage by weight of forming was during described investment casting shell coverstock material was formed: 100# quartz sand is 60%-70%, and 20#-30# quartz sand is 25%-30%, and the aluminium vanadine is 3%-8%.
Beneficial effect of the present invention:
The application of the invention when improving surface quality of continuous castings, has reduced the line quantitative changeization of shell, has strengthened thermal shock resistance, has improved the intensity of shell, the very big reduction of percent defective of low temperature casting thin foundry goods in making.
The specific embodiment
In order more to offer some clarification on content of the present invention, introduce the present invention with concrete examples of implementation below.
In following examples, do not do special instruction, each percentage of forming all refers to percentage by weight.
Embodiment 1
Raw material weight percentage
100# quartz sand 62%
20#-30# quartz sand 35%
Aluminium vanadine 3%
After the above-mentioned material mixing, using ammonium chloride solution and liquor alumini chloridi to be the adhesive-hardening agent, and dry at normal temperatures, and, manufacture arenaceous shell through roasting, and through detecting, this arenaceous shell quality is made arenaceous shell with former method and is compared, and the rate of burning with anger is lower than 5%.The cost of this formula materials is compared with complete 100# quartz sand, and is substantially the same.
Embodiment 2
Raw material weight percentage
100# quartz sand 75%
20#-30# quartz sand 20%
Aluminium vanadine 5%
After the above-mentioned material mixing, using ammonium chloride solution and liquor alumini chloridi to be the adhesive-hardening agent, and dry at normal temperatures, and, manufacture arenaceous shell through roasting, and through detecting, this arenaceous shell quality is made arenaceous shell with former method and is compared, and the rate of burning with anger is lower than 2%.The cost of this formula materials is compared with complete 100# quartz sand, and is substantially the same.
Embodiment 3
Raw material weight percentage
100# quartz sand 55%
20#-30# quartz sand 35%
Aluminium vanadine 10%
After the above-mentioned material mixing, using ammonium chloride solution and liquor alumini chloridi to be the adhesive-hardening agent, and dry at normal temperatures; And through roasting, manufacture arenaceous shell, with this formula materials as produce slim in the low temperature foundry goods; Through detecting, this arenaceous shell quality is made arenaceous shell with former method and is compared, and the rate of burning with anger is lower than 2%.The cost of this formula materials is compared with complete 100# quartz sand, low 2-3.5%.
Embodiment 4
Raw material weight percentage
100# quartz sand 70%
20#-30# quartz sand 22%
Aluminium vanadine 8%
After the above-mentioned material mixing, using ammonium chloride solution and liquor alumini chloridi to be the adhesive-hardening agent, and dry at normal temperatures; And through roasting; Manufacture arenaceous shell, as producing large-scale middle low temperature foundry goods or thin type foundry goods, warp detects with this formula materials; This arenaceous shell quality is made arenaceous shell with former method and is compared, and the rate of burning with anger is lower than 2%.The cost of this formula materials is compared with complete 100# quartz sand, totle drilling cost low 4.2%.
Embodiment 5
Raw material weight percentage
100# quartz sand 70%
20#-30# quartz sand 25%
Aluminium vanadine 5%
After the above-mentioned material mixing, using ammonium chloride solution and liquor alumini chloridi to be the adhesive-hardening agent, and dry at normal temperatures, and, manufacture arenaceous shell through roasting, and through detecting, this arenaceous shell quality is made arenaceous shell with former method and is compared, and the rate of burning with anger is lower than 5%.The cost of this formula materials is compared with complete 100# quartz sand, and is slightly high.
Can know that through above embodiment in basic identical or slightly high degree, the rate of still burning with anger but reduces obviously this material prescription with the cost that uses the quartz sand material fully, simultaneously, because of descending with the percent defective that this material produced, makes totle drilling cost reduce.
The specific embodiment of this patent is not to the claim restriction, just is used for explanation and explains this patent.In the art, those of ordinary skill is all clear, still can realize the present invention through limited change, and this accommodation still is the protection domain of this patent.
Claims (2)
1. an investment casting shell material is characterized in that, includes 100# quartz sand, 20#-30# quartz sand and aluminium vanadine; Each percentage by weight of forming was during described real material formed: 100# quartz sand is 55%-75%, and 20#-30# quartz sand is 20%-35%, and the aluminium vanadine is 3%-10%.
2. investment casting shell coverstock material according to claim 1; It is characterized in that; Each percentage by weight of forming was during described investment casting shell coverstock material was formed: 100# quartz sand is 60%-70%, and 20#-30# quartz sand is 25%-30%, and the aluminium vanadine is 3%-8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110144757.4A CN102806304B (en) | 2011-05-31 | 2011-05-31 | Shell material for fused mould casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110144757.4A CN102806304B (en) | 2011-05-31 | 2011-05-31 | Shell material for fused mould casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102806304A true CN102806304A (en) | 2012-12-05 |
| CN102806304B CN102806304B (en) | 2015-05-06 |
Family
ID=47230273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110144757.4A Expired - Fee Related CN102806304B (en) | 2011-05-31 | 2011-05-31 | Shell material for fused mould casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102806304B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4990219A (en) * | 1972-12-28 | 1974-08-28 | ||
| CN1043897A (en) * | 1989-01-03 | 1990-07-18 | 冯圣贤 | A kind of compound method of pattern casting superficial layer coating |
| CN1109395A (en) * | 1994-12-31 | 1995-10-04 | 冶金工业部钢铁研究总院 | Centrifugal casting box paint |
| JPH0990219A (en) * | 1995-09-27 | 1997-04-04 | Sony Corp | Projection lens |
-
2011
- 2011-05-31 CN CN201110144757.4A patent/CN102806304B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4990219A (en) * | 1972-12-28 | 1974-08-28 | ||
| CN1043897A (en) * | 1989-01-03 | 1990-07-18 | 冯圣贤 | A kind of compound method of pattern casting superficial layer coating |
| CN1109395A (en) * | 1994-12-31 | 1995-10-04 | 冶金工业部钢铁研究总院 | Centrifugal casting box paint |
| JPH0990219A (en) * | 1995-09-27 | 1997-04-04 | Sony Corp | Projection lens |
Non-Patent Citations (4)
| Title |
|---|
| 北京建华铸钢厂二车间: "铝矾土在高强度型壳中的应用", 《铸造》, no. 04, 30 April 1974 (1974-04-30), pages 48 - 54 * |
| 林立泉: "优化熔模铸造制壳材料及工艺的实践", 《铸造技术》, no. 05, 31 May 1993 (1993-05-31), pages 31 - 32 * |
| 胡有珍: "水玻璃法熔腊精密铸造", 《铸工》, no. 12, 31 December 1958 (1958-12-31), pages 26 - 28 * |
| 高广阔等: "精铸复合模壳的研究与应用", 《汽车工艺与材料》, no. 09, 30 September 1995 (1995-09-30), pages 1 - 4 * |
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| Publication number | Publication date |
|---|---|
| CN102806304B (en) | 2015-05-06 |
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Granted publication date: 20150506 Termination date: 20170531 |