Clamp suitable for testing microhardness at different angles

Abstract

The invention provides a clamp suitable for testing microhardness at different angles. The clamp comprises a base, a first support table and a second support table are respectively arranged at two sides above the base, an arc sleeve is arranged between the first support table and the second support table, an arc clamp seat is arranged in the sleeve, and a transmission screw rod is arranged in theclamp seat; the first support table, the second support table, the sleeve and the clamp base are fixed through a pressing base and a clamping base. Cover plates are arranged on the two sides of the upper portion of the clamping base respectively, an operation table is arranged between the cover plates, the cover plates are fixedly connected with the clamping base through screws, and the cover plates are fixedly connected with the operation table through welding. The clamp is novel in structure, reasonable in design, suitable for hardness samples of various sizes and shapes, high in stability,good in fixing performance and high in test result repeatability, the hardness detection efficiency and detection precision can be effectively improved, the working efficiency of inspection personnelis greatly improved, and the device has wide applicability.

Description

technical field [0001] The invention relates to the technical field of microhardness testing equipment, in particular to a fixture suitable for microhardness testing at different angles. Background technique [0002] The hardness of a material is the ability of the material to resist local deformation, especially plastic deformation, indentation or scratches. It is an important performance index to measure the degree of softness and hardness of the material. . Hardness testing is one of the important indicators for testing material properties, and it is also one of the fastest and most economical testing methods. The reason why it can become a common method for mechanical performance testing is that hardness can more accurately reflect the differences in chemical composition, metallographic structure, heat treatment process and cold working of metal materials, so hardness testing has been widely used in production, scientific research and engineering. application. [0003...

AI Technical Summary

Problems solved by technology

Due to the troublesome production of the sample, and heat treatment is required after the production, the hardness error will be caused by the different processing parameters during the heat treatment process, and the measured hardness value will also be distorted. The surface to be tested is kept perpendicular to the axis of the indenter of the test device, so errors often occur in the experiment, which affects the quality of the work, the operation process is cumbersome, the experiment cost is increased, the measurement period is prolonged, the pre-tightening force is not enough, the measurement error is increased, and the measurement error is reduced. work efficiency

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