Manufacturing process for precision casting and sand casting mixed runner applied to casting molding

A production process and sprue technology, applied in casting molding equipment, casting molds, casting mold components, etc., can solve the problems of precise control of difficult metal melts, molten iron rushing, etc., and achieve the effect of improving the quality of castings

Pending Publication Date: 2017-08-11
福建立松金属工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Shaking ladle casting is suitable for casting small workpieces. During the casting process, the flow control of molten metal is very demanding. If the molten metal flows quickly, it will cause molte

Method used

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  • Manufacturing process for precision casting and sand casting mixed runner applied to casting molding
  • Manufacturing process for precision casting and sand casting mixed runner applied to casting molding

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Experimental program
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Effect test

Embodiment

[0034] During casting, the molten metal enters the sand casting runner 2 from the sprue cup 7 of the triangular cup mouth, and then reaches the mold cavity through the precision casting runner 1. During the flow process, the buffer cavity acts as a deceleration buffer for the molten metal , when it can be seen that the molten metal emerges from the molten metal outlet 6, it can be considered that the cavity has been filled with the molten metal, and at this moment, the pouring of the molten metal is stopped.

[0035] After the molten metal cools and solidifies to form a casting, the casting is dug out from the molding sand, and then the precision casting sprue attached to the casting is knocked off to complete the casting.

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Abstract

The present invention proposes the manufacturing process of the precision casting and sand casting mixed sprue applied to casting forming, which is used to make the sprue required by the casting process, and the sprue includes the precision casting sprue and the sand casting sprue arranged in the molding sand The sand casting sprue is a casting channel opened in the molding sand; the precision casting sprue is a casting pipeline made by investment method, and the bending part of the precision casting pipeline is provided with a buffer cavity; the precision casting The sprue is buried in the molding sand and communicates with the cavity; the sand casting sprue includes the sprue and the sprue; the beginning of the sprue is a sprue cup with a triangular cup mouth, the beginning of the sprue is a molten metal pouring port, and the sprue The end communicates with the precision casting sprue; the end of the outlet is the molten metal outlet; the invention can well control the flow state of the molten metal during the casting process.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a manufacturing process of a precision casting and sand casting mixed runner applied to casting forming. Background technique [0002] Shaking ladle casting is suitable for casting small workpieces. During the casting process, the flow control of molten metal is very demanding. If the molten metal flows quickly, it will cause molten iron to rush and easily bring air bubbles into the casting. However, traditional sand casting It is difficult for the runner to precisely control the molten metal. How to solve it is a research direction. Contents of the invention [0003] The invention proposes a manufacturing process of a precision casting and a sand casting mixed sprue applied to casting forming, which can well control the flow state of molten metal during the casting process. [0004] The present invention adopts the following technical solutions. [0005] The manufacturing pr...

Claims

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Application Information

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IPC IPC(8): B22C9/08B22C9/04B22C9/02
CPCB22C9/02B22C9/04B22C9/082
Inventor 刘军
Owner 福建立松金属工业有限公司
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