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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

Inactive Publication Date: 2020-02-21
SHOUGANG JINGTANG IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above technical problems, the present invention provides a non-magnetic steel impact sample grinding fixture and grinding method, which overcomes the defects of poor processing effect and low efficiency of mechanically fixing non-magnetic steel impact samples

Method used

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  • Non-magnetic steel impact specimen grinding clamp and grinding method

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Experimental program
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Effect test

Embodiment 1

[0030] In an embodiment of the present invention, a non-magnetic steel impact sample grinding fixture is applied to a surface grinder, see figure 1 , the grinding fixture includes a base body 1, more than one adjustment rod 2 and top blocks 3 with the same number as the adjustment rods 2. And the structure of the top block 3 is described in detail:

[0031] The base body 1 is in the shape of a back shape as a whole, and there is a sample clamping area 4 for clamping the impact sample. The base body 1 is made of magnetic steel and can be adsorbed on the electromagnetic chuck of the surface grinder. The height of the base body 1 is smaller than that of the impact sample. When grinding, the test surface of the impact sample protrudes from the entire fixture, which is beneficial to the grinding operation. The specific size of the base body 1 depends on the size of the electromagnetic chuck.

[0032] A plurality of adjustment rods 2 are installed in the base body 1 at intervals a...

Embodiment 2

[0045] Based on the same inventive concept, this embodiment provides a non-magnetic steel impact sample grinding method, using the non-magnetic steel impact sample grinding jig provided in the above embodiment to grind the impact sample, the method includes the following steps :

[0046] (1) Place the above-mentioned grinding fixture on the electromagnetic chuck of the surface grinder, place the impact sample 8 to be ground in the sample clamping area 4 with the test surface facing upward, and pass through the base body 1 and the top block 3 Clamp and fix the impact sample 8;

[0047] Since there are three impact samples in one group, in this embodiment, a group of three impact samples 8 of the same steel are clamped and fixed at the same time through the base body 1 and the top block 3, as figure 2 shown.

[0048] (2) The electromagnetic chuck is turned on, the substrate 1 is adsorbed and fixed on the electromagnetic chuck, the surface of the impact sample 8 is ground by a...

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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.

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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Application Information

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IPC IPC(8): B24B19/00B24B41/06
CPCB24B19/00B24B41/06
Inventor 高小勇张衡焦建军朱启茂
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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