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Casting technology of stainless steel casting

A casting process, stainless steel technology, applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of failing to meet the dimensional accuracy requirements of small-sized castings, unable to ensure complete mold filling, rough casting surfaces, etc., and achieve production costs. Low, easy to operate, good quality effect

Inactive Publication Date: 2014-02-19
WUJIANG HYDRAULIC COMPONENTS FOUNDRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for smaller stainless steel parts, the above-mentioned precision casting process cannot ensure complete mold filling during pouring, resulting in the failure to meet the dimensional accuracy requirements of small-sized castings, and the surface of the castings is rough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A casting process for stainless steel castings, comprising the following steps in turn:

[0028] The first step: make a mold according to the appearance of the stainless steel casting, combine the mold with the pouring system mold to form a module, fix the module in the steel sleeve, and the edge of the module is 5-10mm away from the inner wall of the steel sleeve;

[0029] Step 2: Prepare the slurry, dilute the modified phosphate with water and mix it evenly, add the composite powder into the phosphate solution, stir with a mixer at low speed and then at high speed to form a slurry, the stirring time is 10-15min, and mix the slurry Put it in the vacuum hood under the state of micro-shock and pump the vacuum for 2-4 minutes;

[0030] The third step: grouting modeling, inject the prepared slurry into the steel sleeve with wax model, and place it in the vacuum cover, vacuumize for 4 minutes under the state of micro-shock, and then let the steel sleeve stand for 6-7 hours ...

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Abstract

The invention relates to a casting technology of a stainless steel casting. The stainless steel casting adopts quartz sand and alumina as fire-resistant materials, uses a modified phosphate as a binder, and is prepared and cast through pouring. The operation is simple and convenient, the production cost is low, the high-temperature strength of a roasted casting die is high, the quality of the cast casting is good, the requirement on size precision can be met, and the surface roughness of the casting is greatly lowered.

Description

technical field [0001] The invention relates to a casting process, in particular to a casting process of stainless steel castings. Background technique [0002] Stainless steel castings are usually cast by investment casting process, which belongs to precision casting. It is a casting process with little or no cutting. After the material is dried and hardened to form an integral shell, the model is melted from the shell with steam or hot water, then the shell is placed in a sand box, and dry sand is filled around it for molding, and finally the mold is placed After being roasted at a high temperature in a roasting furnace, the mold or shell is roasted, and molten metal is poured into it to obtain a casting. However, for smaller stainless steel parts, the above-mentioned precision casting process cannot ensure complete mold filling during pouring, resulting in failure to meet the dimensional accuracy requirements of small-sized castings, and the surface of the castings i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/18B22C9/04B22C9/12B22D13/00
Inventor 浦傲天
Owner WUJIANG HYDRAULIC COMPONENTS FOUNDRY
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