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Method and device for hardening work pieces, and workpieces hardened according to said method

A workpiece, heated technology, applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve problems such as large differences, inability to improve quality parameters, slippage or friction loss, etc.

Active Publication Date: 2012-08-01
ALD VACUUM TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0019] - workpieces that are carburized in 3D charging have large differences in typical properties such as carburization depth, surface carbon content and core hardness, so that the quality parameters directly or indirectly affected by them cannot be improved. For example, composed of carburized parts Slippage or friction loss of mechanical transmission

Method used

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  • Method and device for hardening work pieces, and workpieces hardened according to said method
  • Method and device for hardening work pieces, and workpieces hardened according to said method
  • Method and device for hardening work pieces, and workpieces hardened according to said method

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Embodiment Construction

[0083] Figure 1a An arrangement for heating a workpiece 6 by means of two heating elements ( 21 , 22 ) is shown in . The workpiece 6 is supported on a carrier 5 configured as a grid-like pallet. The heating elements (21, 22) are arranged relative to the pallet 5 or the workpiece 6 in such a way that the radiation emitted by the heating elements (21, 22), indicated by the arrowed line 8 in FIG. 1, impinges on the surface of the workpiece 6 from different spatial directions. superior. Preferably the heating elements (21, 22) are arranged on both sides of the tray 5 and opposite each other. The arrangement of the heating elements (21, 22) is chosen such that 30 to 100% of the surface of each workpiece 6 is exposed to direct heat radiation 8, ie in direct visual contact with the surface of the heating elements (21, 22). In an expedient development of the invention, the heating elements (21, 22) are constructed and arranged relative to the workpiece 6 in such a way that the heat...

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Abstract

The invention relates to a method and device for thermally treating workpieces, said device comprising a cooling chamber and two or more cementing chambers in which the workpieces are heated to a temperature of 950-1200 DEG C by means of direct heat radiation of a heating device.

Description

technical field [0001] The invention relates to a method for hardening a workpiece, a device for carrying out the method, and a workpiece hardened according to the method. The method according to the invention comprises the following steps: [0002] (a) heating the workpiece to a temperature of 950°C to 1200°C; [0003] (b) at a temperature of 950°C to 1200°C and a pressure of less than 100 mbar, the workpiece is charged with a carbon-containing gas and / or a nitrogen-containing gas; [0004] (c) maintaining the workpiece in an atmosphere at a pressure of less than 100 mbar at a temperature between 950°C and 1200°C; [0005] (d) optionally repeating steps (b) and (c) one or more times; and [0006] (e) Cool the workpiece. [0007] The device according to the invention comprises two or more carburizing chambers, at least one cooling chamber and a transport system for handling the carriages for workpieces, wherein each carburizing chamber can be passed through one or more vac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/02C23C8/06C23C8/20C23C8/22C23C8/24C23C8/26C23C8/80
CPCC23C8/22C23C8/80C23C8/26C23C8/02C23C8/06C23C8/24C23C8/20
Inventor V·霍伊尔K·勒泽G·施密特G·韦尔奇格
Owner ALD VACUUM TECH GMBH