Non-magnetic steel impact specimen grinding clamp and grinding method

An impact sample, non-magnetic technology, which is applied in the direction of grinding workpiece support, grinding/polishing equipment, grinding machine, etc., can solve the problems of poor processing effect and low efficiency of non-magnetic steel impact sample, and reduce the sample size. Effects of dimensional defect rate, accuracy improvement, and grinding efficiency improvement
CN110814935AInactive Publication Date: 2020-02-21SHOUGANG JINGTANG IRON & STEEL CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHOUGANG JINGTANG IRON & STEEL CO LTD
Publication Date
2020-02-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a non-magnetic steel impact specimen grinding clamp and grinding method. The grinding clamp comprises a base body, more than one adjusting rod and jacking blocks with the samenumber as the adjusting rods; the whole base body is concentric-square-shaped; a specimen clamping area used for clamping impact specimens is arranged in the base body; the adjusting rods are installed in the base body at intervals in the length direction of the base body; the adjusting rods extend into the specimen clamping area; the lengths of the rod sections, located in the specimen clamping area, of the adjusting rods are adjustable; the jacking blocks are located in the specimen clamping area and are connected with the adjusting rods; the base body is made of magnetic steel; the height of the base body and the heights of the jacking blocks are all smaller than the heights of the impact specimens; and the impact specimens are clamped and fixed with the jacking blocks through the basebody. According to the non-magnetic steel impact specimen grinding clamp and grinding method, the grinding clamp capable of being sucked by a grinding machine is designed by utilizing the characteristics that the impact specimens are regular in shape and are same in size, the multiple impact specimens can be clamped at one time, and the grinding efficiency is greatly improved.
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Description

technical field

[0001] The application belongs to the technical field of testing the mechanical properties of metal materials, and in particular relates to a non-magnetic steel impact sample grinding fixture and a grinding method. Background technique

[0002] The Charpy impact test is the most widely used traditional mechanical property test to evaluate the impact toughness of steel, and the size of the impact specimen has a direct impact on the impact test results. The final process of impact sample processing is to use a surface grinder to grind the test surface of the sample to the size and surface finish specified in the standard (Ra<5μm). According to GB / T 229-2007, the standard impact sample size is 55mm±0.6mm in length, 10mm±0.075mm in height, and 10mm±0.11mm in width. Except for the end, the surface roughness of the sample should be better than Ra5μm.

[0003] A surface grinder is a machine tool that uses abrasive tools to grind a workpiece to obtain the require...

Claims

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