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Compressive strength testing method of shaft

A technology of compressive strength and test method, which is applied in the direction of applying stable tension/pressure to test the strength of materials, to achieve the effect of strong operability and reliable and accurate data

Inactive Publication Date: 2014-05-21
YUYAO DIANBO MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to ensure the normal use of the parts and the safe operation of the machine, the compressive strength of the carburized shaft must be measured, but so far, there is no published data

Method used

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  • Compressive strength testing method of shaft
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Embodiment Construction

[0025] In order to further understand the content of the invention, features and effects of the present invention, the following examples are cited hereby, and accompanying drawings

[0026] The details are as follows:

[0027] The structural shape of a workpiece that has been ground to a flat side is as follows figure 1 figure 2 shown.

[0028] A method for testing the compressive strength of a shaft, comprising the following steps:

[0029] a. Carburizing heat treatment steps: For the workpiece after machining, the gas carburizing method is adopted, the heating temperature is 900-9300C, the holding time is 4-7h, the carburizing test block is cooled to 760-850℃ and quenched directly, and then at 160- Tempering at 2000℃ for 2-3h;

[0030] b. The step of finishing the surface of the shaft part, the step of finishing is grinding the outer circle of the part on the cylindrical grinding machine, and the surface roughness of the grinding is 0.4-1.6um;

[0031] c. Process test...

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Abstract

The invention relates to a compressive strength testing method of a shaft. The range of pressure capable of breaking a workpiece can be determined by loading workpieces step by step; then the pressure value for breaking is determined precisely by a bisection method. The compressive strength testing method of the shaft has the advantages of simplicity, convenience, intuition, high operability, data reliability and accuracy and the like.

Description

technical field [0001] The invention belongs to the technical field of mechanical property detection technology of metal materials, and in particular relates to a method for testing the compressive strength of a shaft. Background technique [0002] In practical applications, shaft parts are often required to have comprehensive properties such as high strength, toughness, surface hardness and wear resistance. Carburizing is a chemical heat treatment process that is often used. After carburizing, quenching and low-temperature tempering can improve the surface and core structure, and obtain a high-hardness and high-strength surface layer, a certain toughness sub-surface layer and the core. Hard and tough inside, combining high strength and certain toughness on the same part. [0003] Under certain conditions of use, the compressive strength of carburized shafts is an important factor in determining the service life of shaft parts. Therefore, in order to ensure the normal use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
Inventor 姜电波
Owner YUYAO DIANBO MACHINERY
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