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Induction heating partial heat treatment method applied to metal welding piece

A local heat treatment and metal welding technology, applied in heat treatment furnaces, heat treatment equipment, process efficiency improvement, etc., can solve the problems of inability to control the weld structure, high welding residual stress, low maximum temperature, etc., and achieve low cost and easy industrialization , to achieve the effect of industrialization

Inactive Publication Date: 2015-07-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of slow heating, low maximum temperature, inability to control the structure of the weld and high welding residual stress in the current heat treatment method of the weld seam of the metal local weldment, thereby providing a heat treatment method applied to the weld seam of the metal weldment Induction heating local heat treatment method

Method used

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Examples

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Effect test

specific Embodiment approach 1

[0014] Embodiment 1: In this embodiment, an induction heating local heat treatment method applied to the weld seam of a metal weldment is carried out according to the following steps:

[0015] 1. Carry out induction heating and local heat treatment on the weld seam of the metal weldment, so that the weld seam of the metal weldment is heated from room temperature at a heating rate of 60°C / s to 800°C / s to a temperature of T1, and the temperature is T1. Keep warm for t1 time to obtain a metal weldment with a weld temperature of T1; the metal weldment described in step one is an aluminum weldment, magnesium weldment, titanium weldment or steel weldment; when the metal weldment described in step one When it is an aluminum weldment or a magnesium weldment, T1 is 350°C to 550°C, and t1 is 0.5h to 1.5h; when the metal weldment mentioned in step 1 is a steel weldment or a titanium weldment, T1 is 750°C to 900℃, t1 is 0.5h~2h;

[0016] 2. Use the induction heating method to reduce the ...

specific Embodiment approach 2

[0020] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the welding seam of the metal weldment is subjected to local heat treatment by induction heating as described in step 1, so that the weld seam of the metal weldment is heated from room temperature at 300°C / s to The temperature is raised to T1 at a heating rate of 600°C / s, and the temperature is kept at T1 for a time of t1 to obtain a metal weldment with a weld temperature of T1. Others are the same as the first embodiment.

specific Embodiment approach 3

[0021] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that: when the metal weldment described in step 1 is an aluminum weldment or a magnesium weldment, T1 is 400°C to 500°C, and t1 is 0.5h~1.5h. Others are the same as those in the first or second embodiment.

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Abstract

The invention provides an induction heating partial heat treatment method applied to a metal welding piece, relates to the induction heating partial heat treatment method, and solves the technical problems of a current heat treatment method for a welding line of a metal partial welding piece that the heating is slow, the highest temperature is low, a welding line tissue cannot be regulated and controlled, and the welding residual stress is high. The method comprises the following steps: step 1, rapidly heating the welding line of the metal welding piece by using an induction heating manner; step 2, cooling the welding line of the metal welding piece by using the induction heating manner. The induction heating partial heat treatment method applied to the metal welding piece is mainly applied to the field of heat treatment of the metal welding pieces.

Description

technical field [0001] The invention relates to an induction heating local heat treatment method. Background technique [0002] With the development of modern aerospace technology, various large and complex overall structural parts are used more and more widely, such as missile cabins, aircraft airborne component shells, and solid rocket motor shells. Since it is difficult to form large components at one time, welding has become an indispensable connection technology for forming large components. As the most important connection method in current engineering structures, welding has always played an important role in the field of thermal processing of materials. However, during the welding process, due to the uneven temperature field and structural changes caused by welding heating, welding residual stress will be caused, and the existence of welding residual stress will have a greater impact on the performance of components. At the same time, welding residual stress will ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/50C21D1/42C22F1/06C22F1/18C22F1/04
CPCY02P10/25
Inventor 孙跃胡津刘焱唐莎巍杜清松
Owner HARBIN INST OF TECH
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