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Dry sand negative-pressure cavity casting method

A negative pressure and cavity technology, applied in the direction of casting molding equipment, casting molds, casting mold components, etc., can solve the problems of long production cycle, high cost, low hardness, etc., and achieve improved production environment, short production cycle, and occupying an area small area effect

Inactive Publication Date: 2016-06-29
QINGDAO TAIWEI MACHINE TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Some traditionally produced castings also have many defects, such as high energy consumption, high cost, low hardness, poor surface smoothness, long production cycle, etc. Therefore, it is necessary to improve the dry sand negative pressure cavity casting method and reduce casting defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] A dry sand negative pressure cavity casting method is characterized in that it comprises the following steps:

[0015] (1) Design special models and runners according to the castings produced;

[0016] (2) use resin as adhesive, stir with the high temperature resistant sand composition, the amount of described resin is 1-1.5% of the high temperature resistant sand, wherein the curing agent corresponding to the resin will be added in the resin, the amount of the curing agent The dosage is 35-50% of the resin dosage; after the stirring is completed, the hot hard resin sand is obtained;

[0017] (3) Install the model on the core shooter, add the hot hard resin sand that has been stirred, heat and solidify to shape;

[0018] (4) Take out the solidified model runner and then assemble it into a model cavity connected to the runner;

[0019] (5) Embed the installed cavity body in the dry quartz sand of the special sand box, and spread the sealing film through three-dimension...

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PUM

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Abstract

The invention discloses a dry sand negative-pressure cavity casting method. The method is friendly to environment, sand and water are cyclically utilized, the production period is short, the occupied area is small, the production environment is greatly improved, and the product quality is improved.

Description

technical field [0001] The invention mainly relates to a dry sand negative pressure cavity casting method, which belongs to the field of casting. Background technique [0002] Some traditionally produced castings also have many defects, such as high energy consumption, high cost, low hardness, poor surface smoothness, long production cycle, etc. Therefore, it is necessary to improve the dry sand negative pressure cavity casting method and reduce casting defects. Contents of the invention [0003] The purpose of the present invention is to provide a dry sand negative pressure cavity casting method. [0004] A dry sand negative pressure cavity casting method is characterized in that it comprises the following steps: [0005] (1) Design special models and runners according to the castings produced; [0006] (2) use resin as adhesive, stir with the high temperature resistant sand composition, the amount of described resin is 1-1.5% of the high temperature resistant sand, whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/03
Inventor 秦海鹏
Owner QINGDAO TAIWEI MACHINE TOOL