Intrinsic safety type stress and retained austenite content measuring system

Abstract

Disclosed in the invention is an intrinsic safety type stress and retained austenite content measuring system. With the measuring system, secure measurement for the stress and the retained austenite content is realized. The testing precision is high; the measurement difficulty is low; the detection period is short; the testing method is simple, convenient and flexible; and any part of the ferro magnetic material-based object can be measured on the spot in real time. And the technology employed by the measuring system is one of nondestructive measurement for the material.

Description

technical field [0001] The invention relates to the residual stress and residual austenite of ferromagnetic materials, more specifically, an intrinsically safe measurement system suitable for the stress and residual austenite content of ferromagnetic materials. Background technique [0002] Ferromagnetic materials will produce different residual stresses during mechanical processing and thermal processing, and the existence of residual stresses has a great influence on the mechanical properties of materials; austenite is a phase of iron, and retained austenite refers to After martensitic transformation, there is still a small amount of untransformed austenite; [0003] A large number of engineering practices have proved that residual stress is the main factor affecting the mechanical properties of large bridges, large pressure vessels, and large metal structures such as fatigue strength and stress corrosion; It has an important effect; an appropriate amount of retained aust...

AI Technical Summary

Problems solved by technology

However, in the traditional sense, it is difficult to achieve real-time on-site measurement, and the detection is difficult, the detection cycle is long and the detection cost is high, and the test has high risks.

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