Wedge-shaped gate stick and investment casting method

A wedge gate and investment casting technology, which is applied in casting molding equipment, molds, mold components, etc., can solve problems such as insufficient filling pressure and poor feeding of workpieces, reduce the risk of shrinkage cavities, and help replenishment. The effect of shrinking and preventing damage to the workpiece

Active Publication Date: 2021-11-02
DONGFENG PRECISION CASTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention proposes a wedge-shaped sprue rod and investment casting method, which is convenient for hammering and falling off, and can effectively improve the problems of insufficient filling pressure and poor feeding of workpieces

Method used

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  • Wedge-shaped gate stick and investment casting method
  • Wedge-shaped gate stick and investment casting method
  • Wedge-shaped gate stick and investment casting method

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0033] Such as Figure 1~5 As shown, the wedge-shaped sprue bar of the present invention includes a sprue cup 1 , a runner main body 2 and a reinforcing rib 3 .

[0034] The workpiece S to be cast is provided with a riser S1 on its surface, which is used to communicate with the runner main body 2 and pour liquid metal into it. After the molding is completed, the riser S1 is cut off.

[0035] The sprue cup 1, on the one hand, is used for pouring li...

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Abstract

The invention discloses a wedge-shaped gate stick and an investment casting method. Wedge-shaped faces inclined outwards and downwards are respectively formed on the two outer side faces of a cross gate main body; and compared with an existing design scheme in which the included angle between a gate stick and the end face of a workpiece inner gate is a right angle, the technical scheme of the invention has the advantages that in one aspect, the stress at the joint of the inner gate and the gate stick is concentrated so as to facilitate hammering a pouring cup to fall off from a casting head without knocking on a cast workpiece, thereby preventing the workpiece from being damaged; and in the second aspect, due to the design of the wedge-shaped faces, the mold filling pressure of liquid metal on a to-be-cast workpiece can be increased in the pouring process so as to facilitate feeding and reduction of the hole shrinkage risk. The wedge-shaped gate stick disclosed by the invention is integrally designed to be of a conical shape, is convenient to fall off from the casting head, and is particularly suitable for investment casting of a differential pressure sensor base.

Description

technical field [0001] The invention relates to the field of sprue bars, in particular to a wedge-shaped sprue bar and an investment casting method. Background technique [0002] In the field of precision casting technology, sprue rods are required for workpieces in investment casting production. Liquid metal is poured through the sprue rods, and the liquid metal flows into the inner runner of the workpiece. After solidification and molding, the sprue rods and workpieces are separated. [0003] In the above process, due to the limitation of objective conditions such as workpiece structure, material and assembly methods, the removal of casting risers is a labor-intensive process with a very low degree of mechanization. At present, the most economical, practical and efficient method of removing the riser of the workpiece in investment casting is the hammering method. [0004] The conventional gate rod is a straight gate rod, and the angle between the gate rod and the end face...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08B22C9/04B22C9/22
CPCB22C9/082B22C9/04B22C9/22Y02P10/20
Inventor 王丹陈海军黄逵凯
Owner DONGFENG PRECISION CASTING CO LTD
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