Charpy V-notch measuring device

Abstract

The invention relates to a Charpy V-notch measuring device, which comprises a measuring meter with a shifting fork, a measuring bar and a meter body, a U-shaped bow rack, a small angle measuring head and a measuring column. The two end surfaces of the bow rack are respectively provided with a shaft hole. The measuring bar of the measuring meter penetrates through one shaft hole and is fixedly connected in the shaft hole through a fixing device. One end of the small angle measuring head is flat and linear and the other end of the small angle measuring head is in thread connection with the measuring bar. The measuring column and the small angle measuring head are relatively arranged. One end surface of the measuring column is perpendicular to the measuring bar and the other end of the measuring column is in interference fit with the other shaft hole of the bow rack. The invention has the advantages that the true value of a Charpy V-notch can be accurately and effectively measured, the measurement data of the geometric dimension and the shape-position deviation of the Charpy V-north impact test blocks can be obtained, the trouble that calipers cannot be used for measuring the true value of the Charpy V-north is solved and the product quality is effectively guaranteed.

Description

technical field [0001] The invention relates to a measuring device for narrow notches on cuboids and cylinders, in particular to a Charpy V-shaped notch measuring device. Background technique [0002] The Charpy V-notch impact test is one of the important means to detect the mechanical properties of metals such as nuclear power equipment and components. Expansion always follows the path of least resistance, and the shape and outline of the fracture are also formed along with the weakest part of the material performance or the part with the highest stress. Therefore, to ensure the quality of the metal material, it is necessary to ensure that the sample is cut And preparation, and effective measurement and analysis of the shape and size of the sample, otherwise, the size of the sample notch size deviation will cause dispersion deviation. [0003] For cubes and cylinders, their dimensions can be directly measured with various calipers, and for some gaps, existing calipers can ...

AI Technical Summary

Problems solved by technology

This indirect measurement method requires two measurements and calculations to obtain a large approximate value, which increases the measurement uncertainty factors, increases the probability of measurement errors, and ultimately leads to the inability to analyze the dispersion deviation. If the size of the material is large, the judgment of the mechanical properties of the material cannot be analyzed correctly. If the misjudgment is used in practice, it will cause a huge nuclear safety accident.

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