Field hardness detection result comparison test method

Abstract

The invention relates to a field hardness detection result comparison test method and aims to overcome a problem that a portable Leeb hardness tester and a portable Brinell hardness tester cannot satisfy the hardness detection requirement in high-effective production period. The test method includes: S1) selecting a test environment; S2) selecting test equipment; S3) selecting test object; S4) preparing a test piece of simulation field; S5) performing hardness test of the simulation field; S6) preparing a laboratory test piece; S7) performing laboratory hardness test; S8) determining the fieldhardness detection effect. In the method, on the basis of a large number of tubes and test points on a heating surface of a boiler in a power plant, the field condition of the test object is simulated under the laboratory environment, so that the hardness property of the test object is evaluated actually. The method satisfies detection requirement in high-effective production, is free of influence on production period, and effectively avoids the problem of technical dispute due to the hardness.

Description

technical field [0001] The invention belongs to the technical field of hardness detection, and in particular relates to a comparison test method for on-site hardness detection effects. Background technique [0002] Using a portable Leeb hardness tester for on-site hardness testing is simple and fast, and the traces left on the surface are small, so it is widely used in hardness testing of metal parts in power stations. From the usual inspection and testing work, it has been proved that when using a portable Leeb hardness tester to test the hardness of large-diameter thick-walled pipes, as long as the testing conditions are good, the grinding surface is good, and the surface is flat, more accurate testing results can be achieved, basically Reflect the actual hardness value of the detected object. The small-diameter thin-walled pipe is different. Because of its small radius of curvature, relatively light weight, thin wall, and much lower rigidity than large-diameter thick-wal...

AI Technical Summary

Problems solved by technology

This method is cumbersome to operate and has high requirements on the site environment, which does not meet the requirements of hardness testing in the efficient production period, especially for the heating surface tubes of power plant boilers, which have a large number and a wide range of measuring points. All of them using portable Brinell hardness testers will seriously affect the production cycle.

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