The Paton Welding Journal, 2009, №06

2009 №06 (01)

2009 №06 (03)

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The Paton Welding Journal, 2009, #6, 5-9 pages

Selection of thermal conditions of welding hardening steels of different structure classes

V.Yu. Skulsky

E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
The Implant method was used for the comparative evaluation of influence of preheating temperature on the rate of HAZ metal cooling and resistance of welded joints of martensitc and bainite steels against cold crack formation. During experiments the martensite chromium steel of 10Kh9MFB type and bainite steels 10GN2MFA and 20KhN4FA were used. It was defined that the high level of resistance against cold crack formation in welding of martensite and bainite steels is attained at the cooling rate w6/5  8-10 and w6/5  12-14 C/s respectively.
Keywords: arc welding, welded joints, phase transformation, hardening, bainite, martensite, cold crack, preheating, cooling rate, tempering

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Suggested Citation

V.Yu. Skulsky (2009) Selection of thermal conditions of welding hardening steels of different structure classes. The Paton Welding J., 06, 5-9.

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