Evaporative pattern casting burned shell type casting process

A casting process and lost foam technology, which is applied in the field of lost foam burning shell casting process, can solve the problems of difficulty in guaranteeing precision, variability of castings, large casting defects, etc., and reduce carbon increase of castings, reduce grinding workload, and use The effect of less material

Inactive Publication Date: 2020-07-17
JIANGSU JINGCHENG MASCH MFG CO LTD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0002] In the current field of casting molding and casting technology, the main processes include sand casting, lost foam casting, etc., but there are deficiencies in these various methods such as low precision and large casting defects.
The traditional lost foam casting process, the castings produced by it are variable, the accuracy is difficult to guarantee, and there will be legacy talk, resulting in defects such as pores

Method used

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  • Evaporative pattern casting burned shell type casting process

Examples

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Effect test

Embodiment 1

[0024] S1: Use polystyrene to make a white foam mold that is consistent with the casting entity;

[0025] S2: Paste the riser and sprue on the polystyrene foam white mold prepared in S1 according to the process drawing, and reinforce the variable parts, place the white mold on a flat plate or tooling, and use fiber rods, refractory cloth Or ceramic bars and other bonding corrections and reinforcements to prevent deformation;

[0026] S3: The white mold prepared in S2 is successively subjected to surface coating and back coating and drying. Select the corresponding coating according to the requirements of the material and the characteristics of the casting. During the production process of the coating, add powder one after another while stirring the liquid. After mixing, stir quickly for 30 minutes, and store the mixed coating in an environment of 40 ° C. , airtight and must not be exposed to the sun. Before applying the surface coating, it is necessary to ensure that the surf...

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PUM

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Abstract

The invention relates to the technical field of casting forming and casting, in particular to an evaporative pattern casting burned shell type casting process. The process comprises the primary process flows of molding, riser and pouring gate adhering, coating, drying, burning, box burying, pouring, cleaning, polishing and machining. A casting produced by the casting process has the advantages ofbeing high in surface smoothness, high dimensional precision and the like, and the evaporative pattern casting burned shell type casting process not only can meet the demand on precision of the casting, but also can lower the production cost and reduce the production pollution greatly, can meet the demand on top-grade precise casting of complex structure, and is green and environment-friendly in shell manufacturing process.

Description

technical field [0001] The invention relates to the technical field of casting molding and casting, in particular to a lost foam firing hollow shell casting process. Background technique [0002] In the current field of casting molding and casting technology, the main techniques include sand casting, lost foam casting, etc., but there are deficiencies in the aspects of low precision and large casting defects among these various methods. The traditional lost foam casting process, the castings produced by it are variable, the precision is difficult to guarantee, and there will be defects such as bequests and pores. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the present invention provides a lost foam firing shell casting process. The technical problem to be solved is how to improve the surface finish of the produced castings by improving the molding and production process of the castings. Higher, better quality, but also able to save prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C7/02B22C9/08
CPCB22C7/023B22C9/043B22C9/088
Inventor 丁宇刘家宝
Owner JIANGSU JINGCHENG MASCH MFG CO LTD
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