Rapid and comprehensive method for evaluating pitting resistance of stainless steel pipe welds

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United States of America

PATENT NO 12259313
SERIAL NO

18824852

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Abstract

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The disclosure relates to a rapid and comprehensive method for evaluating pitting resistance of stainless steel pipe welds. Weld samples are collected from different positions of one or more welds on the stainless steel pipe to obtain the surface oxide inclusion density and critical pitting temperature of each weld sample, the surface oxidation inclusion density is taken as an independent variable and the critical pitting temperature is taken as a dependent variable to obtain a fitting function formula between the surface oxidation inclusion density and the critical pitting temperature. The surface oxide inclusion density obtained by adopting the same welding process on the stainless steel pipe to be tested is substituted into the fitting function formula to obtain a standard critical pitting temperature of the weld to be tested. The pitting resistance of the weld of the stainless steel pipe to be tested can be evaluated rapidly, accurately, and comprehensively.

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Patent Owner(s)

  • TIANJIN UNIVERSITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Han, Yongdian Tianjin, CN 18 2
Hao, Kangda Tianjin, CN 11 0
Shi, Yongle Tianjin, CN 1 0
Xu, Lianyong Tianjin, CN 18 2
Zhao, Lei Tianjin, CN 382 2549

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