Metal material micro punching shear test and Brinell hardness measurement combined device

Abstract

A metal material micro punching shear test and Brinell hardness combined measurement device comprises a testing machine, a tool die is installed on a base of the testing machine, and the tool die clamps a sample; a load sensor is installed at the output end of the testing machine and connected with a punch through a detachable connecting piece, and the punch is right opposite to a punched hole in the tool die. Position measuring devices are installed on the tool die and the punch or the base of the testing machine and the output end of the testing machine. The tool die comprises a lower boss, the lower boss is matched with an inner hole of a female die positioning sleeve, and a female die is arranged in the female die positioning sleeve and positioned through the female die positioning sleeve. An outer sleeve inner hole is matched with the outer circumference of the female die positioning sleeve; the upper boss is matched with an inner hole of the outer sleeve and detachably fixed to the outer sleeve and the lower boss through screws. The metal material micro punching shear test and Brinell hardness combined measurement device provided by the invention can improve the test precision and complete the Brinell hardness test at the same time.

Description

technical field [0001] The invention relates to a testing device, in particular to a combined measuring device for micro punching shear test and Brinell hardness of metal materials. Background technique [0002] At present, the mechanical performance characterization of the strength of metal materials mainly includes two indicators: yield strength and tensile strength. The test of these two indicators is usually completed by unidirectional static load tensile test. This test requires the production of standard tensile specimens. There are two common samples of plate type and round bar type, the total length is about 200mm, and the size of the sample is relatively large. The test result is the average mechanical property of the sample during the stretching process, so the local mechanical properties and material mechanics of the material cannot be tested. Test requirements for samples with inhomogeneous properties (such as the mechanical properties of weld areas) and local me...

AI Technical Summary

Problems solved by technology

However, the load and displacement data obtained by this test method are essentially a comprehensive mechanical property, including the results of various mechanical properties such as tension and shear, and the evaluation of a single mechanical property index is not accurate.

Images