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Method and device for measuring Brinell hardness

A technology of Brinell hardness and measurement method, which is applied in the field of improvement of measurement device and Brinell hardness measurement method, to achieve the effect of reducing measurement error and labor intensity

Inactive Publication Date: 2020-02-21
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to provide a Brinell hardness measurement method and device, which solves the problem of indentation depth measurement and realizes the automation of Brinell hardness measurement, that is, directly calculates the Brinell hardness value by measuring the indentation depth instead of measuring the indentation depth. The hardness value is obtained by converting the diameter of the scar into the indentation depth

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  • Method and device for measuring Brinell hardness
  • Method and device for measuring Brinell hardness
  • Method and device for measuring Brinell hardness

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Embodiment Construction

[0022] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but the claimed protection scope is not limited to the description.

[0023] Such as figure 1 and figure 2 As shown, in this embodiment, based on the existing Brinell hardness tester (model HB-3000), the final shaft 8 of the hardness tester is modified. The final shaft 8 is the part connected to the indenter above the indenter. The other end of the small lever is connected to the small lever, and the small lever is connected to the large lever, and the large lever is connected to the weight. The hardness tester acts the test force on the sample through the large and small levers, so the moving grating 3 is installed on the pressing shaft 8, and the position of the moving grating 3 on the pressing shaft 8 is between the large lever and the small lever (ie figure 2 between the position of the large lever body and the position of the small leve...

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Abstract

The invention discloses a method and device for measuring Brinell hardness. The grating is used to measure the depth of indentation h of the indenter pressed into the surface of the sample, and then the value of the depth of indentation h is transmitted to the computer. After processing parameters such as different testing forces, different ball indenters and different materials by using application software, the hardness value is calculated and displayed directly. The measuring device provided by the invention adds a dynamic grating, a static grating, and a grating probe to the existing Brinell hardness tester, thereby satisfying the measurement requirement of the depth value of indentation h on the hardness tester. The invention can directly obtain the hardness value at the same time asthe indentation, and does not need to obtain the hardness value by measuring the diameter of the indentation, thereby reducing the measurement error and the labor intensity.

Description

technical field [0001] The invention belongs to the technical field of hardness measurement in mechanics, in particular to the improvement of a method for measuring Brinell hardness and a corresponding measuring device. Background technique [0002] The Brinell hardness test method of metal materials is a common method for measuring the hardness of metal materials. It uses a ball indenter with a certain diameter to press into the surface of the sample under the action of a certain test force F, and removes the test force after a certain period of time. The average stress per unit area of ​​the trace represents the hardness of the metal material to be tested. Calculate the Brinell hardness value according to the following formula: [0003] [0004] In the actual hardness test, since it is impossible to accurately measure the indentation depth h, it is easier to measure the indentation diameter, so now the Brinell hardness value is calculated by measuring the indentation d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/42G01N3/06
CPCG01N3/42G01N3/06G01N2203/0019G01N2203/008G01N2203/0676G01N2203/0682G01N2203/0641
Inventor 聂静朱朝阳冯艺红贺四喜
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD