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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 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

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

Examples

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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 invention provides a manufacturing process for a precision casting and sand casting mixed runner applied to casting molding. The manufacturing process is used for manufacturing the runner required by a casting process. The runner comprises a precision casting runner body and a sand casting runner body which are arranged in molding sand. The sand casting runner body is a casting channel opened up in the molding sand. The precision casting runner body is a casting pipeline manufactured through an investment casting method. A buffering cavity is formed in the bent position of the precision casting pipeline. The precision casting runner body is buried in the molding sand and communicates with a cavity. The sand casting runner body comprises a cast-in channel and a burst-out channel. A pouring cup with a triangular cup opening is arranged at the initial end of the cast-in channel. The initial end of the cast-in channel is a molten metal cast-in opening. The tail end of the cast-in channel communicates with the precision casting runner body. The tail end of the burst-out channel is a molten metal burst-out opening. According to the manufacturing process for the precision casting and sand casting mixed runner applied to casting molding, the flowing state of molten metal can be well controlled in 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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