Method and tool for reducing deformation in large-scale thin-wall cylindrical forging heat treatment

A heat treatment process, thin-walled cylinder technology, applied in heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve problems such as uneven support of forgings, and achieve the effects of facilitating processing, increasing contact area, and improving uneven support

Inactive Publication Date: 2012-07-04
SHANGHAI HEAVY MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Another technical problem to be solved by the present invention is to provide a tooling for reducing deformation during heat treatment of large thin-walled cylindrical forgings, which can improve the deformation caused by uneven support of forgings during heat treatment

Method used

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  • Method and tool for reducing deformation in large-scale thin-wall cylindrical forging heat treatment
  • Method and tool for reducing deformation in large-scale thin-wall cylindrical forging heat treatment
  • Method and tool for reducing deformation in large-scale thin-wall cylindrical forging heat treatment

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Embodiment Construction

[0019] The method for reducing deformation during heat treatment of large thin-walled cylinder forgings of the present invention comprises the following steps:

[0020] In the first step, the well-shaped parallel iron 1 is laid in the heat treatment furnace 3, and the well-shaped parallel iron 1 is used as a supporting tool;

[0021] The second step is to adjust the levelness of the well-shaped horn 1 so that the well-shaped horn 1 is in a horizontal state;

[0022] In the third step, the large thin-walled cylinder forging 2 is vertically placed on the well-shaped horn 1, and the line passing through the center of the well-shaped horn 1 and perpendicular to the horizontal plane of the well-shaped horn 1 coincides with the axis of the forging, as figure 1 shown.

[0023] In the first step, the well-shaped horn 1 is hoisted by a crane and placed in the heat treatment furnace 3. Since the well-shaped horn 1 is a tool for supporting the forging, its size is larger than that of th...

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Abstract

The invention discloses a method for reducing deformation in large-scale thin-wall cylindrical forging heat treatment, which comprises the following steps: firstly laying #-shaped padding iron in a heat treatment furnace, wherein the #-shaped padding iron is used as a supporting tool, adjusting the levelness of the #-shaped padding iron to allow the #-shaped padding iron to be in a horizontal state, finally vertically putting a large-scale thin-wall cylindrical forging on the #-shaped padding iron to allow the forging to pass through the center of the #-shaped padding iron and to allow the axis of the forging to be superposed with a straight line which is perpendicular to the horizontal plane where the #-shaped padding iron is located; the method provides uniform supporting points and a flat supporting surface, increases the contact area of the forging and the tool, and thus significantly reduces the heat treatment deformation generated during high temperature heating of the large-scale thin-wall cylindrical forging. The invention also discloses a tool for reducing deformation in large-scale thin-wall cylindrical forging heat treatment, and the supporting tool is the #-shaped padding iron; the tool is simple in structure, convenient for processing, and can improve the condition of non-uniform supporting of the forging during heat treatment.

Description

technical field [0001] The invention relates to a method for reducing deformation during the heat treatment process of a large thin-walled cylinder forging, and also relates to a tool for reducing deformation during the heat treatment of a large thin-walled cylinder forging. Background technique [0002] In recent years, the shortage of power energy has become a bottleneck restricting the sustained and rapid economic development of various countries. As an important measure to save energy and adjust the energy structure, nuclear power has been included in the national power development plan. At the same time, the global nuclear power industry has entered a period of rapid development. In order to improve the energy structure, many countries in the world are actively committed to the development of nuclear power. [0003] At present, nuclear power equipment is developing in the direction of large-scale, and the key components of the main equipment of the nuclear island, such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/08C21D9/14B21J1/06
Inventor 李守江赵喜林靳海山于清凯
Owner SHANGHAI HEAVY MACHINERY PLANT
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