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Forging method for valve body

A valve body and pre-forging technology, applied in valve devices and other directions, can solve the problems of uneven structure, low precision and high production cost, and achieve the effect of dense structure

Inactive Publication Date: 2018-01-26
LIUZHOU KEERTE FORGING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a forging method of a valve body, which can solve the problems of uneven structure, low precision and high production cost in the current valve body forging process

Method used

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Examples

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Embodiment Construction

[0017] Below in conjunction with embodiment, the present invention is described in further detail: the technical scheme that the present invention adopts is: comprise the steps:

[0018] 1) Cutting: Use a sawing machine to saw the bar into sections according to the specified size;

[0019] 2) Heating: put the material section into the intermediate frequency furnace for heating, the heating temperature is controlled at 1150°C ± 50°C and kept for 0.25 hours to 0.5 hours to ensure uniform temperature inside and outside the material section;

[0020] 3) Preforming: Put the heated material section into the mold and preform it through a 2500KN press, so that the shape of the material section becomes the shape of the valve body, and the final forging temperature is controlled above 900°C + 50°C;

[0021] 4) Reheating: send the preformed valve body blank into the intermediate frequency furnace for secondary heating, the heating temperature is controlled at 1150°C±50°C and kept for 0.1...

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Abstract

The invention discloses a forging method for a valve body and relates to the technical field of machine manufacturing. The forging method comprises the following steps of blanking, heating, performing, reheating, pre-forging, finish forging, edge cutting and the like. According to the forging method, the problems of uneven structures, low precision and high production cost occurring in current valve body forging processes can be solved.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to a forging method of a valve body. Background technique [0002] Valves are the control components in the fluid conveying system, which have the functions of cut-off, adjustment, diversion, non-return, pressure stabilization, diversion, overflow and pressure relief; valves can be used to control air, water vapor, various corrosive media, mud, The flow of various types of fluids such as oil, liquid metal and radioactive medium; because the valve is often in relatively harsh working conditions, and is subjected to high-temperature corrosion and erosion of gasoline, diesel and other gases, as well as the friction between the valve itself and the valve seat; therefore, Valve materials must have sufficient thermal strength, high temperature corrosion resistance, oxidation resistance, wear resistance and impact resistance at the highest operating temperature. As an imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/24
Inventor 吴海玲何圣嘉何拥军
Owner LIUZHOU KEERTE FORGING MACHINERY