CN107486542A - A kind of new essence casting process for making shell - Google Patents
A kind of new essence casting process for making shell Download PDFInfo
- Publication number
- CN107486542A CN107486542A CN201710667780.9A CN201710667780A CN107486542A CN 107486542 A CN107486542 A CN 107486542A CN 201710667780 A CN201710667780 A CN 201710667780A CN 107486542 A CN107486542 A CN 107486542A
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- Prior art keywords
- coating
- sand
- module
- wax
- casting
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a kind of new essence casting process for making shell, configured including 1) surface coating, 2) wax-pattern painting sand, 3) air-dry, dehumidify, reinforce, it can effectively shorten the production cycle, reduce production cost, surface and the internal memory quality of casting shell are improved, ensures casting dimension accuracy, improves casting yield, formwork retained strength can be effectively reduced, is easy to excessive gas during molten steel forming.
Description
Technical field
The present invention relates to investment pattern precision casting technical field, more particularly to a kind of new essence casting process for making shell.
Background technology
With the development of science and technology, requirement more and more higher of the existing industry to product technology performance, complicated structural member
Realized often through casting, pass through the surface to product and the strict control of internal memory quality and dimensional accuracy so that cast
To tremendous expansion, but the related casting technique to some higher heavy metals of requirement or relatively backward in the prior art, often
Using combination process, but the process production cycle is longer, and production cost is higher, and except existing wax-pattern to product cast(ing) surface and
Outside the influence of internal memory quality and dimensional accuracy, the selection of process for making shell step is also particularly important, is mainly adopted both at home and abroad now
By the use of zircon sand and upper shop sand as die casing material, but zircon sand is expensive, and cost is higher, using upper shop sand, the internal memory quality of casting
It is relatively low, and formwork retained strength can be increased, it is not easy to excessive gas during molten steel forming.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of new essence casting process for making shell, can effectively shorten production week
Phase, production cost is reduced, improves surface and the internal memory quality of casting shell, ensure casting dimension accuracy, improve casting yield,
Formwork retained strength can be effectively reduced, is easy to excessive gas during molten steel forming.
In order to solve the above technical problems, the technical solution used in the present invention is：
A kind of new essence casting process for making shell, comprises the following steps：
1) surface coating configures：The liquid powder ratio of Ludox and white alundum powder is 1:1.8-1.2, viscosity is detected with 6# measuring cups
In the 25-30 seconds, JFC additions are 0.3%-0.5%, the coating modulated, and the n-octyl alcohol for adding 0.01%-0.03% is used for
Defoaming；Detection viscosity, being coated with property, mobility, the moderate rear of coating layer thickness can be used after the coating configured need to be deposited 6 hours；
2) wax-pattern applies sand：After qualified module is got from wax-pattern workshop, module is detected again, after confirmation is qualified, makes mould
Group is slowly immersed in coating in a manner of 45 degree of angles, slowly rotation, then make coating be dipped into sprue cup lower edge in a vertical manner, is soaked
Lift module after 3-5s, module hole turning groove etc. is carried out with compressed air to blow leaching, suppression removes bubble herein, makes coating complete
After full immersion, it is again dipped into coating, repeats after operating above, drop removes unnecessary coating, continuous overturning, coating is uniformly applied and is hung on
After wax pattern surface, mullite sand leaching sand is carried out, described mullite sand is 80-120 mesh as surface stucco；
3) air-dry, dehumidify, reinforce：The module of first-class sand need to carry out product dehydrate processing under appropriate warm, wet control, pass through
After 12 hours air-dried, dehumidifying, product enters the reinforcing stage；Reinforcing hardening bath is magnesium chloride brine, and density is adjusted to
1.26g/cm3；From high-alumina fly, high alumina sand as refractory material；Ludox, high alumina powder coating are configured, after coating is adapted to,
Soaked and handled upper sand, through magnesium chloride brine chemicosolidifying, after, shell has possessed under its high temperature continuous operation 4-6
Enter next procedure after chemical stability, elevated temperature strength.
The present invention can effectively shorten the production cycle, reduce production cost, improve surface and the internal memory quality of casting shell,
Ensure casting dimension accuracy, improve casting yield, can effectively reduce formwork retained strength, be easy to overflowing during molten steel forming
It gas, can effectively shorten the production cycle (2-3 days can be shortened), reduce production cost (reducing cost 10%), improve casting shell
Surface and internal memory quality, ensure casting dimension accuracy, improve casting yield, can effectively reduce formwork retained strength, just
Excessive gas when molten steel forming, being particularly suitable for use in, some structures are more complicated, and quality requirement is higher, and are also easy to produce the quality such as stomata
The product of problem, such as some generator supports, adjusting bracket, type door bracket, guide pillar support, yoke bracket etc..
Embodiment
Illustrated with reference to the embodiment of the present invention：
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still the present invention can be with
It is different from other manner described here using other to implement, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.
A kind of new essence casting process for making shell, comprises the following steps：
1) surface coating configures：The liquid powder ratio of Ludox and white alundum powder is 1:1.8-1.2, viscosity is detected with 6# measuring cups
In the 25-30 seconds, JFC additions are 0.4%, the coating modulated, and the n-octyl alcohol for adding 0.01%-0.03% is used to defoam；
Detection viscosity, being coated with property, mobility, the moderate rear of coating layer thickness can be used after the coating configured need to be deposited 6 hours；
2) wax-pattern applies sand：After qualified module is got from wax-pattern workshop, module is detected again, after confirmation is qualified, makes mould
Group is slowly immersed in coating in a manner of 45 degree of angles, slowly rotation, then make coating be dipped into sprue cup lower edge in a vertical manner, is soaked
Lift module after 3-5s, module hole turning groove etc. is carried out with compressed air to blow leaching, suppression removes bubble herein, makes coating complete
After full immersion, it is again dipped into coating, repeats after operating above, drop removes unnecessary coating, continuous overturning, coating is uniformly applied and is hung on
After wax pattern surface, mullite sand leaching sand is carried out, described mullite sand is 80-120 mesh as surface stucco；
3) air-dry, dehumidify, reinforce：The module of first-class sand need to carry out product dehydrate processing under appropriate warm, wet control, pass through
After 12 hours air-dried, dehumidifying, product enters the reinforcing stage；Reinforcing hardening bath is magnesium chloride brine, and density is adjusted to
1.26g/cm3；From high-alumina fly, high alumina sand as refractory material；Ludox, high alumina powder coating are configured, after coating is adapted to,
Soaked and handled upper sand, through magnesium chloride brine chemicosolidifying, after, shell has possessed under its high temperature continuous operation 4-6
Enter next procedure after chemical stability, elevated temperature strength.
Using above-mentioned foundation embodiments of the invention as enlightenment, by above-mentioned description, relevant staff safely may be used
In the range of without departing from the technology of the present invention thought, to carry out various change and modification.The technical scope of the present invention is not
The content being confined on specification, it is necessary to which its technical scope is determined according to right.
Claims (1)
- A kind of 1. new essence casting process for making shell, it is characterised in that：Comprise the following steps：1) surface coating configures：The liquid powder ratio of Ludox and white alundum powder is 1:1.8-1.2, existed with 6# measuring cups detection viscosity 25-30 seconds, JFC additions are 0.3%-0.5%, the coating modulated, add 0.01%-0.03% n-octyl alcohol for disappearing Bubble；Detection viscosity, being coated with property, mobility, the moderate rear of coating layer thickness can be used after the coating configured need to be deposited 6 hours；2) wax-pattern applies sand：After qualified module is got from wax-pattern workshop, module is detected again, after confirmation is qualified, delays module Slowly immersed in a manner of 45 degree of angles in coating, slowly rotation, then coating is dipped into sprue cup lower edge in a vertical manner, soak 3-5s After lift module, to module hole turning groove etc. blow leaching with compressed air, suppression removes bubble herein, coating is soaked completely After entering, it is again dipped into coating, repeats after operating above, drop removes unnecessary coating, continuous overturning, coating is uniformly applied and is hung on wax-pattern Behind surface, mullite sand leaching sand is carried out, described mullite sand is 80-120 mesh as surface stucco；3) air-dry, dehumidify, reinforce：The module of first-class sand need to carry out product dehydrate processing under appropriate warm, wet control, small by 12 When air-dry, dehumidifying after, product enters the reinforcing stage；Reinforcing hardening bath is magnesium chloride brine, and density is adjusted to 1.26g/ cm3；From high-alumina fly, high alumina sand as refractory material；Ludox, high alumina powder coating are configured, after coating is adapted to, is soaked Upper sand is handled, through magnesium chloride brine chemicosolidifying, for continuous operation 4-6 after, the chemistry that shell has possessed under its high temperature is steady Enter next procedure after qualitative, elevated temperature strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710667780.9A CN107486542A (en) | 2017-08-07 | 2017-08-07 | A kind of new essence casting process for making shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710667780.9A CN107486542A (en) | 2017-08-07 | 2017-08-07 | A kind of new essence casting process for making shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107486542A true CN107486542A (en) | 2017-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710667780.9A Pending CN107486542A (en) | 2017-08-07 | 2017-08-07 | A kind of new essence casting process for making shell |
Country Status (1)
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| CN (1) | CN107486542A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108145095A (en) * | 2017-12-27 | 2018-06-12 | 安徽应流航源动力科技有限公司 | A kind of process for making shell of complexity deep groove structure precision castings |
| CN111151712A (en) * | 2020-01-06 | 2020-05-15 | 江苏中超航宇精铸科技有限公司 | Method, system and medium for improving quality of investment precision casting formwork shell surface layer |
| CN111545711A (en) * | 2020-05-19 | 2020-08-18 | 中国科学院金属研究所 | Preparation method of thermal shock resistant ceramic shell for high-temperature alloy LMC (melt-solidified metallic) directional solidification |
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| CN1613574A (en) * | 2003-11-07 | 2005-05-11 | 魏靖奇 | Precisioning casting process for high-strength hard mould casing by foamed plastic mould |
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| CN102069144A (en) * | 2011-01-10 | 2011-05-25 | 安徽应流集团霍山铸造有限公司 | Shell mold casting process for wax mold precision casting stainless steel big part |
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2017
- 2017-08-07 CN CN201710667780.9A patent/CN107486542A/en active Pending
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| CN1613574A (en) * | 2003-11-07 | 2005-05-11 | 魏靖奇 | Precisioning casting process for high-strength hard mould casing by foamed plastic mould |
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| CN102069144A (en) * | 2011-01-10 | 2011-05-25 | 安徽应流集团霍山铸造有限公司 | Shell mold casting process for wax mold precision casting stainless steel big part |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108145095A (en) * | 2017-12-27 | 2018-06-12 | 安徽应流航源动力科技有限公司 | A kind of process for making shell of complexity deep groove structure precision castings |
| CN111151712A (en) * | 2020-01-06 | 2020-05-15 | 江苏中超航宇精铸科技有限公司 | Method, system and medium for improving quality of investment precision casting formwork shell surface layer |
| CN111545711A (en) * | 2020-05-19 | 2020-08-18 | 中国科学院金属研究所 | Preparation method of thermal shock resistant ceramic shell for high-temperature alloy LMC (melt-solidified metallic) directional solidification |
| CN111545711B (en) * | 2020-05-19 | 2022-04-05 | 中国科学院金属研究所 | Preparation method of thermal shock resistant ceramic shell for high-temperature alloy LMC (melt-solidified metallic) directional solidification |
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Application publication date: 20171219 |
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