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Casting method for casting stainless steel workpiece through evanescent mold

A technology of lost foam casting and stainless steel, which is applied in the manufacture of tools, casting molding equipment, casting molds, etc. It can solve the problems of low production efficiency of workpieces, high cost of mold shell production, and difficult operation, so as to improve processing quality and reduce production costs. The effect of the number of shell layers and complex structure

Inactive Publication Date: 2018-01-19
ANHUI WEIGONG MACHINERY TECH
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AI Technical Summary

Problems solved by technology

In the production process of stainless steel workpieces in the prior art, there are many layers of mold shells, and the mold shells need to be dried at constant temperature and humidity. The operation is complicated and difficult, the cost of mold shells is high, and the production efficiency of workpieces is low.

Method used

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  • Casting method for casting stainless steel workpiece through evanescent mold

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Embodiment Construction

[0017] Below with reference to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention, such as the shape, structure, mutual position and connection relationship between the various parts, the role and working principle of the various parts, etc., will be further described. Detailed instructions:

[0018] as attached figure 1 As shown, the present invention is a casting method of a lost foam casting stainless steel workpiece. The lost foam casting includes a sand mold 1 and a mold shell 2. The casting steps of the casting method of the lost foam casting stainless steel workpiece are: 1) using foam Make formwork 2 with silica sol paint, dry formwork 2, then place formwork 2 in sand mold 1; 2) Put sand mold 1 and formwork 2 into a roasting furnace to heat, foam and silica sol The formed mold shell 2 liquefies and disappears, and the position of the mold shell 2 forms a workpiece cavity; 3) Place the sand mold 1 in...

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Abstract

The invention provides a casting method for casting a stainless steel workpiece through an evanescent mold applied to the technical field of evanescent mold casting. The casting method for casting thestainless steel workpiece through the evanescent mold comprises the casting steps that firstly, bake drying is carried out on a mold shell (2), and then the mold shell (2) is put into a sand mold (1); secondly, the sand mold (1) and the mold shell (2) are heated, and the mold shell (2) is disappeared in a liquidation manner; thirdly, the sand mold (1) is put into a sealed molding box (3), and airin the molding box (3) is extracted till the molding box (3) is extracted to a negative pressure state; and fourthly, a liquid metal raw material is poured into a workpiece cavity. By means of the casting method for casting the stainless steel workpiece through the evanescent mold, the machining quality of the stainless steel workpiece can be improved, the production efficiency of the stainless steel workpiece is improved, the large batch production requirement of the stainless steel product is met, meanwhile, the environmental friendly and energy saving effects can be obviously improved, andthe stainless steel workpiece with a complex structure and surface quality superior to that of a traditional process is manufactured.

Description

technical field [0001] The invention belongs to the technical field of lost foam casting, and more specifically relates to a casting method of a lost foam casting stainless steel workpiece. Background technique [0002] In the production process of stainless steel workpieces, the production of shells (mold shells) requires a certain thickness according to the structure of the castings. In the production process of stainless steel workpieces in the prior art, there are many layers of mold shells, and the mold shells need to be dried at constant temperature and humidity. The operation is complicated and difficult, the cost of mold shells is high, and the production efficiency of workpieces is low. Contents of the invention [0003] The technical problem to be solved by the present invention is: to provide a method with simple steps, and under the premise of ensuring the quality of the mold shell, the constant temperature and humidity drying step of the mold shell is canceled...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04
Inventor 蔡小玮蓝福珍徐向阳
Owner ANHUI WEIGONG MACHINERY TECH
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