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Material hardness unification and comparison research method and hardmeter

A technology of hardness tester and hardness, which is applied in the direction of testing material hardness, analyzing materials, strength characteristics, etc., and can solve problems such as poor comparability and insufficient understanding of unity

Inactive Publication Date: 2017-05-03
王昌益
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The present invention aims at the defects of lack of unified understanding and poor comparability in the current hardness theory and test method and test results, and provides a unified comparative research method of material hardness and a hardness tester used therein

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Embodiment Construction

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0033] 1. The understanding of the law of material hardness uniformity and the research method of comparability

[0034] 1. Solve the problem of understanding the law of uniform hardness

[0035] A. Correctly understand the general law of the relationship between hardness and function

[0036] According to the functional theory and experimental proof: materials often show different hardness under different functional conditions. For materials with certain plasticity characteristics, their hardness changes in a wide range. Generally speaking, when the test stress is less than the ultimate stress, the hardness of the material remains at 100; when the test stress exceeds the ultimate stress, the hardness of the mater...

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Abstract

The invention relates to a material hardness unification and comparison research method and a hardmeter and belongs to the field of engineering mechanics basic theory and application, and instrument and meter manufacturing and research. A hardness conversion relational expression formula of the same material under different test stresses is sigma max=T1 sigma 1=T sigma. The hardmeter comprises an action theory hardmeter and an action theory hammering-type hardmeter. Based on the novel action theory, the existing problems of poor hardness test data uniformity and poor comparability are solved. The method widens the road for development and perfection of basic theory science, basic theory application science and engineering material property science and promotes further development and perfection of a hardness measurement tool manufacturing industry.

Description

technical field [0001] The invention relates to a uniform comparative research method for hardness of materials and a hardness tester used therein, belonging to the fields of basic theory and application technology of engineering mechanics and instrument manufacturing research. Background technique [0002] The patent No. ZL2013103851487 issued on August 26, 2013 provides a new theoretical formula, method and instrument for determining rock hardness. Its formula is T=(Δt 1 / Δt) 100%. In the formula, T represents the hardness of the material to be tested; Δt represents the penetration time of the standard hardness mineral (hardest mineral) with equal thickness; Δt 1 Indicates the equal-thickness drilling time of the measured rock. At the same time, a method to determine the parameter Δt is given: select a mineral with known hardness, cut it into a standard thickness slice, drill it with an electric drill for testing hardness, and obtain the penetration time Δt 1 , and the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/48
CPCG01N3/48G01N2203/0039G01N2203/008G01N2203/0682
Inventor 王昌益王耀慧
Owner 王昌益
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