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Method for casting dry sand negative pressure cavity

A negative pressure and cavity technology, applied in the field of casting, can solve the problems of long production cycle, high cost, low hardness, etc., and achieve the effect of improving production environment, short production cycle and small footprint.

Inactive Publication Date: 2014-03-05
TONGLING JINGWEI FLUID SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are also many defects in traditionally produced castings, such as high energy consumption, high cost, low hardness, poor surface smoothness, long production cycle, etc., so improving dry Sand negative pressure cavity casting method is necessary to reduce casting defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A dry sand negative pressure cavity casting method is characterized in that it comprises the following steps:

[0019] (1) Design special models and runners according to the castings produced;

[0020] (2) Use resin as adhesive, mix with high temperature resistant sand components, the amount of resin used is 1-1.5% of high temperature resistant sand, and the corresponding curing agent should be added to 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;

[0021] (3) Install the model on the core shooter, add the stirred hot hard resin sand, heat and solidify to form;

[0022] (4) Take out the solidified model sprue and assemble it into a model cavity connected with the sprue;

[0023] (5) Embed the installed cavity body in the dry quartz sand of the special sand box, and spread the sealing film through three-dimensional vibration;

[0024] (6) Connect the negative p...

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PUM

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Abstract

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

Description

[0001] technical field [0002] The invention mainly relates to a dry sand negative pressure cavity casting method, which belongs to the field of casting. Background technique [0003] 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 [0004] The purpose of the present invention is to provide a dry sand negative pressure cavity casting method. [0005] The present invention is achieved through the following technical solutions: [0006] A dry sand negative pressure cavity casting method is characterized in that it comprises the following steps: [0007] (1) Design special models and runners according to the castings produced; [0008] (2) Use resin as adhesive, mix with high temperature resistant sand com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/04
Inventor 吴寿涛
Owner TONGLING JINGWEI FLUID SCI & TECH