A method for detecting the degenerated layer of bearing grinding

A metamorphic layer and grinding technology, which is applied in the detection field of bearing grinding metamorphic layer, can solve the problems of large data error and low data reliability of the grinding metamorphic layer, so as to improve processing quality, accuracy and reliability sexual effect

Active Publication Date: 2018-07-27
AVIC HARBIN BEARING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of large data error and low data reliability of the measured grinding metamorphic layer existing in the microhardness test of ball bearings and cylindrical roller bearings, and further provides a method for testing Method for Grinding Metamorphic Layer of Bearing

Method used

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  • A method for detecting the degenerated layer of bearing grinding
  • A method for detecting the degenerated layer of bearing grinding
  • A method for detecting the degenerated layer of bearing grinding

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specific Embodiment approach 1

[0037] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment, a method for detecting the degraded layer of bearing grinding, the steps are as follows:

[0038] 1. Sample preparation of ball bearing parts by metallographic sample preparation method:

[0039] Steel balls: For steel balls with a diameter not greater than 9 / 16 inches, directly inlay them; for steel balls with a diameter greater than 9 / 16 inches, cut off a part along the radial direction of the steel balls, and inlay the remaining parts of the steel balls for preparation In the same way, the cross-section of the inlaid steel ball is subjected to one rough throw and then two fine throws to obtain the test surface of the steel ball. The depth of the cut part is not greater than 5% of the diameter of the steel ball, or the cross-sectional area of ​​the steel ball is not greater than 11% of the maximum cross-sectional area;

[0040] Inner ring and outer ring: cut a section of test...

specific Embodiment approach 2

[0052] Specific implementation mode two: combination figure 1 and figure 2 To illustrate this embodiment, the minimum diameter of the steel ball to be tested is not less than 1 / 4 inch. It is designed in this way to adapt to the size of the support frame on the hardness test bench used for sample embedding. Other compositions and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0053] Specific implementation mode three: combination figure 1 and figure 2 To describe this embodiment, the mounting is cold mounting. With this design, the cold mounting resin can be injected by vacuum, which is more convenient. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a method for detecting a grinding affected layer of a bearing, belonging to the technical field of analysis and measurement control, and aiming at solving the problems that existing ball bearing and cylinder roller bearing are detected by a micro-hardness method so that errors of measured data of the grinding affected layer are great and the reliability of the data is low. The method for detecting the grinding affected layer of the bearing comprises the following steps: preparing a sample from a ball bearing part by adopting a metallographic sample preparation method; detecting the rigidity; and determining the depth of the affected layer. The method for detecting the grinding affected layer of the bearing comprises the following steps: preparing the sample from the ball bearing part by adopting the metallographic sample preparation method; detecting the rigidity; and determining the depth of the affected layer. The method is used for detecting the grinding affected layer of the bearing.

Description

technical field [0001] The invention relates to a detection method, in particular to a method for detecting the grinding metamorphic layer of a bearing, and belongs to the technical field of analysis and measurement control. Background technique [0002] The depth of the grinding metamorphic layer has a lot to do with the grinding process. It is an important indicator for evaluating the grinding quality of bearing parts (surface metamorphic layer: due to the influence of cold, hot processing and lubricating media, the surface of metal materials The organizational structure, physical, chemical properties and mechanical properties of the layer are very different from the core, which is called the surface metamorphic layer. Grinding metamorphic layer: The surface metamorphic layer caused by grinding is called the grinding metamorphic layer.) , usually adopting the microhardness method to measure the depth of the ground metamorphic layer has the following problems: 1. It is diff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/42G01N1/32
CPCG01N1/32G01N3/42
Inventor 班君刘秀莲罗燕王教翔刘雨健姜莉莉刘艳敏周淑梅
Owner AVIC HARBIN BEARING
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