Specimen Preparation method of macrographic examination for stainless steel welding joints

DAI Xucheng; HOU Dazhen; LIU Hong; ZHAO Shunli

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Specimen Preparation method of macrographic examination for stainless steel welding joints
Vol. 49, Issue 3, Pages: 89-91(2019)
Published：2019
DOI：
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DOI：

DAI Xucheng, HOU Dazhen, LIU Hong, et al. Specimen Preparation method of macrographic examination for stainless steel welding joints[J]. Eletric Welding Machine2019, 49(3): 89-91. DOI：

摘要

对电解腐蚀在不锈钢焊接接头低倍金相检验中的运用进行研究

通过试验选定腐蚀溶液、腐蚀时间和输出电流等参数。结果表明:采用10 mL HNO

+90 mL H

O腐蚀溶液

输出电流2 A

在室温下腐蚀6 min

制备出清晰的不锈钢焊接接头低倍金相试样

可清晰显示焊接接头各个区域。

Abstract

The application of electrolytic corrosion in the macrographic examination for stainless steel welding joints is studied

the corrosion solution

corrosion time and output current are selected by experiments. The results show that after being corroded in the corrosion solution consisting of 10 ml nitric acid and 90 ml water for 6 minutes at room temperature with output current of 2 A

a clear macroscopic morphology specimen of stainless steel welding joint is prepared

and the each regions of welding joints can be clearly displayed.