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Method for Gas Carbonitriding

A nitrocarburizing and gas phase technology, applied in metal material coating process, coating, solid diffusion coating and other directions, can solve the problem of dirt and other problems, and achieve the effect of reducing the stress peak and improving the running-in performance.

Active Publication Date: 2015-06-17
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is that dirt can appear on the components due to the residues of the salt bath

Method used

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  • Method for Gas Carbonitriding
  • Method for Gas Carbonitriding

Examples

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Embodiment Construction

[0022] figure 1 A drum 1 of an embodiment of an axial piston machine according to the invention is shown in a cross-sectional illustration with an inclined axis. The drum has, for example, a cylindrical shape and rotates about its own longitudinal axis 2 during operation of the axial piston machine. The roller 1 is spherically shaped at the end face 4 and is pressed against the distribution plate with this end face 4 . The other end face 6 faces the flange of the drive shaft, relative to which the drum 1 is positioned in the case of a metering machine and can be positioned in different ways in the case of a variable machine. The angle is positioned relative to the flange.

[0023] figure 2 A view of the end face 6 of the drum 1 is shown, facing the flange or the shaft. On the circumference of the shaft, a plurality of cylinder bores 8 are hollowed out in an evenly distributed manner, said cylinder bores extending over most of the length of the drum 1 .

[0024] refer to ...

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Abstract

A method of forming a wear protection layer for a machine component that forms a slide pairing with a further machine component includes gas-carbonitriding at least one of the machine components in order to minimize wear. The gas-carbonitriding includes forming a thin uniform bonding layer and a comparatively thick diffusion layer thereunder. The gas-carbonitriding is performed at a low temperature and for a long duration.

Description

technical field [0001] The invention relates to a method for gas phase nitrocarburizing for the formation of wear protection layers on sliding surfaces of machine components. Background technique [0002] It is known from the prior art to nitrocarburize machine components of sliding friction pairs. In this heat treatment, the chemical composition of the edge layer is changed, thereby increasing strength and improving wear. [0003] According to the prior art, therefore, machine components are nitrocarburized in salt baths. The disadvantage of this method is that dirt can occur on the components due to residues of the salt bath. [0004] Documents EP 1 122 330 B1 and EP 1 122 331 B1 disclose methods for the nitrocarburizing treatment of components by means of gas, which is referred to below as gas-phase nitrocarburizing treatment. Contents of the invention [0005] The object of the present invention is to provide a method for gas-phase nitrocarburizing, with which slidi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/30
CPCC23C8/34
Inventor B.格特纳
Owner ROBERT BOSCH GMBH
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