CN104493092A - Manufacturing method of reinforcing large-scale aluminum alloy molten mold shell - Google Patents
Manufacturing method of reinforcing large-scale aluminum alloy molten mold shell Download PDFInfo
- Publication number
- CN104493092A CN104493092A CN201410776308.5A CN201410776308A CN104493092A CN 104493092 A CN104493092 A CN 104493092A CN 201410776308 A CN201410776308 A CN 201410776308A CN 104493092 A CN104493092 A CN 104493092A
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- layer
- sand
- wire netting
- particle diameter
- aluminum alloy
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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
Abstract
The invention discloses a manufacturing method of reinforcing a large-scale aluminum alloy molten mold shell. Metal meshes are added in a coating hanging and sanding process and are used as a reinforcement material layer, so that the mechanical strength of the aluminum alloy molten mold shell can be effectively improved. The method is simple, feasible, and economic in cost.
Description
Technical field
The present invention relates to model casting field, be specifically related to a kind of manufacture method of reinforcing large aluminum alloy investment shell.
Background technology
It is one of problem common in large aluminum alloy part investment casting process that investment casting shell cracks.In actual production, the resin with high melting point such as photosensitive resin or PSP powder, dewaxing in the process of heating and can constantly expanding, can cause module shell to occur that crackle even comes off.Or shell is subject to pressure and the impulsive force of aluminium liquid in casting process, easily ftractures, occur the situation of leaking material.
Summary of the invention
Prevent the best method of Shell cracking from being the intensity increasing shell.For solving the problem of Shell cracking, the invention provides a kind of manufacture method of reinforcing large aluminum alloy investment shell.The method realizes the reinforcing to investment casting shell by the mode adding layers of reinforcement in the process preparing shell.
The present invention is achieved by the following technical programs.
Reinforce a manufacture method for large aluminum alloy investment shell, comprise following step:
(1) suppress wax-pattern and carry out wax pattern assemblies;
(2) by constantly repeating to hang the technical process being coated with coating then stucco, obtain 1-3 surface layer, 1 layer of transition zone, 1-2 layer back-up coat, 1 layer of transition zone successively, wherein: the particle diameter of surface layer sand is 100-200 order, the particle diameter of transition zone sand is 30-60 order, and the particle diameter of back-up coat sand is 10-20 order;
(3) continue to hang painting coating, then on dope layer, wire netting is laid, and with wire, wire netting is strapped on wax pattern assemblies, ensure that wire netting and wax pattern assemblies fit tightly, described wire netting and fusing point wiry are greater than 800 DEG C, the mesh size of wire netting is greater than 2mm, and the wire diameter of braided metal net is 0.2-2mm;
(4) continue through and constantly repeat to hang the technical process being coated with coating then stucco, obtain layer 2-4 back-up coat and 1 layer successively and fix the sand layer, wherein: the particle diameter of back-up coat sand is 10-20 order, fixing the sand the particle diameter of layer sand is 60-100 order;
(5) shell drying, dewaxing, roasting.
Further, the wire netting in above-mentioned steps 3 is wire netting or steel wire.
Beneficial effect of the present invention is: by adding wire netting as layers of reinforcement between layer of sand, and strengthen the mechanical strength of ceramic shell, method is simple.
Detailed description of the invention
Technical scheme of the present invention is further described below with the form of test example, but described in claimed scope is not limited to.
For the reinforcement shell of certain large aluminum alloy foundry goods.
Reinforce a manufacture method for large aluminum alloy investment shell, comprise following step:
(1) suppress wax-pattern and carry out wax pattern assemblies;
(2) by constantly repeating to hang the technical process being coated with coating then stucco, obtain 2 aspect layers, 1 layer of transition zone, 1 layer of back-up coat, 1 layer of transition zone successively, strictly follow extension coating then to spread sand, hang a coating again and spread a sand again, only spread same sand, the particle diameter possibility of every layer of sand is identical also may not be identical at every turn.Wherein: the particle diameter of surface layer sand is 100 orders, the particle diameter of transition zone sand is 50 orders, and the particle diameter of back-up coat sand is 20 orders;
(3) continue to hang painting coating, then on dope layer, lay wire netting, and with the iron wire of 0.8mm diameter, wire netting is strapped on wax pattern assemblies, ensure that wire netting and wax pattern assemblies fit tightly, the string diameter of this wire netting is 0.8mm, and mesh is uniformly distributed, and mesh size is 3mm;
(4) continue through and constantly repeat to hang the technical process being coated with coating then stucco, obtain 3 layers of back-up coat and 1 layer successively and fix the sand layer, wherein: the particle diameter of back-up coat sand is 15 orders, fixing the sand the particle diameter of layer sand is 70 orders;
(5) dewaxing, roasting after shell natural drying, dewaxes consistent with the technique of common investment shell with the technique of roasting.
Claims (2)
1. reinforce a manufacture method for large aluminum alloy investment shell, it is characterized in that comprising following step:
(1) suppress wax-pattern and carry out wax pattern assemblies;
(2) by constantly repeating to hang the technical process being coated with coating then stucco, obtain 1-3 surface layer, 1 layer of transition zone, 1-2 layer back-up coat, 1 layer of transition zone successively, wherein: the particle diameter of surface layer sand is 100-200 order, the particle diameter of transition zone sand is 30-60 order, and the particle diameter of back-up coat sand is 10-20 order;
(3) continue to hang painting coating, then on dope layer, wire netting is laid, and with wire, wire netting is strapped on wax pattern assemblies, ensure that wire netting and wax pattern assemblies fit tightly, described wire netting and fusing point wiry are greater than 800 DEG C, the mesh size of wire netting is greater than 2mm, and the wire diameter of braided metal net is 0.2-2mm;
(4) continue through and constantly repeat to hang the technical process being coated with coating then stucco, obtain layer 2-4 back-up coat and 1 layer successively and fix the sand layer, wherein: the particle diameter of back-up coat sand is 10-20 order, fixing the sand the particle diameter of layer sand is 60-100 order;
(5) shell drying, dewaxing, roasting.
2. a kind of manufacture method of reinforcing large aluminum alloy investment shell as claimed in claim 1, is characterized in that: the wire netting in step 3 is wire netting or steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410776308.5A CN104493092A (en) | 2014-12-15 | 2014-12-15 | Manufacturing method of reinforcing large-scale aluminum alloy molten mold shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410776308.5A CN104493092A (en) | 2014-12-15 | 2014-12-15 | Manufacturing method of reinforcing large-scale aluminum alloy molten mold shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104493092A true CN104493092A (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410776308.5A Pending CN104493092A (en) | 2014-12-15 | 2014-12-15 | Manufacturing method of reinforcing large-scale aluminum alloy molten mold shell |
Country Status (1)
| Country | Link |
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| CN (1) | CN104493092A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670391A (en) * | 2016-11-30 | 2017-05-17 | 安徽应流集团霍山铸造有限公司 | Technical device for enhancing deformability and collapsibility of core sand |
| CN107052254A (en) * | 2016-11-30 | 2017-08-18 | 安徽应流集团霍山铸造有限公司 | It is a kind of to strengthen a kind of technique device of its core sand deformability and collapsibility |
| CN108127082A (en) * | 2017-12-22 | 2018-06-08 | 株洲九方铸造有限责任公司 | A kind of shell anti-deformation process |
| CN109382494A (en) * | 2018-11-28 | 2019-02-26 | 贵州安吉航空精密铸造有限责任公司 | A kind of formwork reinforcement means during spin cast paint |
| CN112756554A (en) * | 2020-12-24 | 2021-05-07 | 南通海泰科特精密材料有限公司 | Shell making process method for preventing dewaxing, cracking and wax infiltration of fused quartz mould shell |
| CN114210927A (en) * | 2021-12-31 | 2022-03-22 | 毕普帕罗洛江苏工程技术有限公司 | Shell-layer reinforcing process for inhibiting shell cracking |
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| CN102921888A (en) * | 2012-11-07 | 2013-02-13 | 西安西工大超晶科技发展有限责任公司 | Manufacturing method of fired mold precision cast aluminum alloy case |
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2014
- 2014-12-15 CN CN201410776308.5A patent/CN104493092A/en active Pending
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| US4905750A (en) * | 1988-08-30 | 1990-03-06 | Amcast Industrial Corporation | Reinforced ceramic passageway forming member |
| CN101062517A (en) * | 2006-04-25 | 2007-10-31 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for manufacturing commutating support plate shaped shell of accurate casting heavy type combustion turbine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670391A (en) * | 2016-11-30 | 2017-05-17 | 安徽应流集团霍山铸造有限公司 | Technical device for enhancing deformability and collapsibility of core sand |
| CN107052254A (en) * | 2016-11-30 | 2017-08-18 | 安徽应流集团霍山铸造有限公司 | It is a kind of to strengthen a kind of technique device of its core sand deformability and collapsibility |
| CN108127082A (en) * | 2017-12-22 | 2018-06-08 | 株洲九方铸造有限责任公司 | A kind of shell anti-deformation process |
| CN109382494A (en) * | 2018-11-28 | 2019-02-26 | 贵州安吉航空精密铸造有限责任公司 | A kind of formwork reinforcement means during spin cast paint |
| CN112756554A (en) * | 2020-12-24 | 2021-05-07 | 南通海泰科特精密材料有限公司 | Shell making process method for preventing dewaxing, cracking and wax infiltration of fused quartz mould shell |
| CN112756554B (en) * | 2020-12-24 | 2024-03-05 | 南通海泰科特精密材料有限公司 | Shell making process method for preventing dewaxing, cracking and wax seepage of fused quartz mould shell |
| CN114210927A (en) * | 2021-12-31 | 2022-03-22 | 毕普帕罗洛江苏工程技术有限公司 | Shell-layer reinforcing process for inhibiting shell cracking |
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Application publication date: 20150408 |