A Corrosion Method for Measuring Grain Size of Ultra-thin Stainless Steel

A stainless steel, grain size technology, applied in the field of metallographic corrosion, can solve the problems of repeated grinding corrosion, corrosion not in place, excessive corrosion, etc., to achieve the effect of reducing duplication of labor, process adjustment and improvement, and reducing the occurrence of twins

Active Publication Date: 2020-09-08
SHANGHAI STAL PRECISION STAINLESS STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Ultra-thin 300 series stainless steel refers to stainless steel with a thickness of less than 0.2mm. When doing metallographic corrosion, the end face of the material is too thin, and it is difficult to corrode by ordinary electrolytic metallographic corrosion methods. Often, the corrosion is not in place or the corrosion is too high, resulting in repeated grinding. corrosion

Method used

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  • A Corrosion Method for Measuring Grain Size of Ultra-thin Stainless Steel
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  • A Corrosion Method for Measuring Grain Size of Ultra-thin Stainless Steel

Examples

Experimental program
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Embodiment 1

[0024] (1) Take a section of sample from 300 grade ultra-thin stainless steel, and trim the surface to be tested by wire cutting (generally sliced ​​samples, there will be a section of deformation area on the end surface, if the grinding is not enough, the test area will be inaccurate, resulting in test errors ). Then cut into about 25mm width samples.

[0025] (2) Clamp the sample to be tested (the sample and the sample to be tested are preferably both 300 series stainless steel) in the middle position with 3 samples of about 2 mm on the left and right sides, and ensure that the test end faces are aligned (which can reduce the grinding time), such as figure 1 Shown, placed in a cold mounting tool.

[0026] (3) Take 5mL and 10ml of the two liquids of epoxy resin and curing agent according to the volume ratio of 1:2, then mix the two liquids, and then slowly stir clockwise for 2 minutes (to minimize the generation of air bubbles), and then pour into Cold Mounting in Abrasive...

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Abstract

The invention relates to a corrosion method for grain size test of ultrathin stainless steel. The method comprises the following steps: preparing a metallographic inlaid sample; and making a corrosionvessel, and carrying out electrolytic corrosion. The method well solves the metallographic corrosion problem of the ultrathin stainless steel, greatly improves the one-time success probability of themetallographic phase through a corrosion gradient technology, and improves the rating accuracy through reducing twin crystals; and the above test can effectively control the quality of the material,can technically adjust and improve the quality of precision metal ribbons, and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of metallographic corrosion, in particular to a method for testing the grain size of ultra-thin stainless steel. Background technique [0002] 300 series stainless steel is an alloy material containing iron, carbon, nickel and chromium, a non-magnetic stainless steel material, which has better malleability than 400 series stainless steel. Due to the austenitic structure of 300 series stainless steel, it has strong corrosion resistance in many environments, has good resistance to fracture caused by corrosion caused by metal overstress, and its material properties are not affected by heat treatment. influences. [0003] Ultra-thin 300 series stainless steel refers to stainless steel with a thickness of less than 0.2mm. When doing metallographic corrosion, the end face of the material is too thin, and it is difficult to corrode by ordinary electrolytic metallographic corrosion methods. Often, the corrosion is not in pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/32
CPCG01N1/32
Inventor 杨文杰丁春华
Owner SHANGHAI STAL PRECISION STAINLESS STEEL
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