Heat processing unit case heat treating method and its device

A technology of local heat treatment and induction heating device, applied in heat treatment furnaces, heat treatment equipment, induction heating devices, etc., can solve problems such as large temperature difference, and achieve the effect of improving quality, productivity and quality

Active Publication Date: 2005-11-23
TOPY INDUSTRIES
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  • Abstract
  • Description
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Problems solved by technology

[0018] The problem to be solved by the present invention is that the temperature difference between the surface and the core of a specific part of the induction heating method consisting o

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  • Heat processing unit case heat treating method and its device
  • Heat processing unit case heat treating method and its device
  • Heat processing unit case heat treating method and its device

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Embodiment Construction

[0078] Below, refer to Figure 1 to Figure 6 and Figure 9~ Figure 14 (Figure 12~ Figure 14 (Description applicable to the prior art) The method and apparatus for local heat treatment of heat-treated components according to the present invention will be described.

[0079] As a heat-treated part, take a construction machinery crawler link as an example. However, the heat-treated components are not limited to the links for crawlers of construction machines. In addition, when the heat-treated component 1 is a track link 1 of a construction machine, the specific portion 1a to be heat-treated is a roller rolling surface.

[0080] First, the local heat treatment method of a heat-treated component according to the present invention will be described.

[0081] Such as figure 1 As shown, the local heat treatment method of the heat treatment component of the present invention is a local heat treatment method for heat treating only the specific portion 1a of the heat treatment comp...

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Abstract

This invention provides a method for partially heat-treating a member to be heat-treated, which improves the quality of a heat-treated member, and to provide an apparatus therefor. The method for partially heat-treating only the particular part 1a of the member 1 to be heat-treated comprises an induction heating step 20P of induction-heating only the particular part, and a subsequent cooling step 30. The induction heating step 20P comprises charging n pieces (n is a natural number of 3 or more) of the members 1 to be heat-treated in one coil, and transporting each member to be heat-treated sequentially from the first heating position to an n-th heating position, to heat it over n times while beginning from the first heating 22(1) carried out at the first heating position and ending in the n-th heating 22(n) carried out at the n-th heating position. The partial heat treatment may be applied to partial quenching, to partial tempering, or to both of the partial quenching and the partial tempering.

Description

technical field [0001] The present invention relates to a localized heat treatment method and apparatus for heat-treated components (components used for heat treatment). [0002] The heat-treated part is, for example, a track link of a construction machine. In this case, the part that is partially heat-treated is the rolling surface of the roller. In addition, the partial heat treatment is any of partial quenching, partial tempering, or partial quenching and partial tempering. Background technique [0003] Typical heat-treated components include track shoes 2, links 1, pins 3, and bushings 4 used on the tracks of construction machinery such as hydraulic excavators and bulldozers as shown in Figure 12, and those used in construction machinery such as bulldozers and snow removal The blade tip (not shown) used in machinery, etc. For the roller rolling surface 1a of the chain link 1 (Fig. 13, Figure 14 ), particularly requiring wear resistance. [0004] In order to have thes...

Claims

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Application Information

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IPC IPC(8): H05B6/10C21D1/10C21D9/00
CPCY02P10/25
Inventor 竹野裕之栗原秋芳酒井孝雄
Owner TOPY INDUSTRIES
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