Casting and forging method and casting and forging device

A technology of casting and forging and casting, applied in the field of casting and forging methods and casting and forging devices, can solve the problems of forming air bubbles and castings that cannot be exhausted, and achieve the effects of low manufacturing cost, reduced cooling speed, and small investment in equipment

Active Publication Date: 2014-11-12
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a casting and forging method to solve the problem in the prior art that the aluminum flange ring cannot be vented during the casting and forging process and bubbles will be formed on the casting

Method used

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  • Casting and forging method and casting and forging device
  • Casting and forging method and casting and forging device
  • Casting and forging method and casting and forging device

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Embodiment 2

[0034] Embodiment 2 of the casting and forging method of the present invention, the method may further comprise the steps:

[0035] 1) Pouring the cavity of the lower mold from above until the liquid reaches the set casting position and stops pouring;

[0036] 2) When the temperature of the liquid in the lower mold reaches the set temperature value, start the oil cylinder to drive the upper mold to move downward, so that the liquid enters the riser of the upper mold from bottom to top and forms a closed space with air on the upper mold , until the upper mold moves to the set high-pressure feeding complete position so that the pressure value of the air in the closed space reaches the set pressure value (test the pressure value of the closed space through the pressure gauge on the upper part of the riser), And stop the movement of the upper mold; then keep the pressure for a certain period of time, so that the riser can fully feed the unsolidified casting until the casting is co...

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PUM

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Abstract

The invention relates to a casting and forging method and a casting and forging device. The casting and forging device comprises a lower die and an upper die, wherein a cavity is formed in the upper end of the lower die; the upper die is connected with an oil cylinder capable of driving the upper die to move up and down; a punch which is in concave-convex fit with the cavity of the lower die and a riser which is arranged on the lower surface of the punch in an inwards concave manner are arranged at the lower end of the upper die; a sprue base which is located right below the riser and used for being matched with a casting ladle to accommodate a liquid is arranged on the bottom surface of the cavity of the lower die; the insertion travel of the upper die in the cavity comprises a feeding travel and a die forging travel with depths in the cavity increased; a pressure relief valve communicated with the riser is arranged at the upper end of the upper die. By the aid of the casting and forging method and the casting and forging device, the problem that bubbles can be formed on a casting due to the fact that exhausting cannot be performed during casting and forging in the prior art is solved.

Description

technical field [0001] The invention relates to a casting and forging method and a casting and forging device. Background technique [0002] In the prior art, the manufacturing process of the cylindrical aluminum flange ring for GIS welding is: casting round bar → blanking and shortening → heat treatment punching → repeated forging of the end face and inner and outer peripheral surfaces → heat treatment → repeated hole expansion. The main problems of the above-mentioned manufacturing process are: a large amount of machining is used, the machining allowance is large, the processing procedures are numerous, the processing equipment used is more, the manufacturing efficiency is low, the manufacturing cost is high, and the material utilization rate is low. [0003] In addition, a casting-forging composite integrated molding process has appeared in the prior art. This process refers to the advanced process of casting first and then forging immediately in the same set of moulds. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/02
Inventor 雷咸伦常林晶王品珍王刚李俊辉张爱芳王赏
Owner STATE GRID CORP OF CHINA
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