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Title:
HEAT TREATMENT FOR END PART OF STEEL WELDED JOINT
Document Type and Number:
Japanese Patent JPS57106490
Kind Code:
A
Abstract:

PURPOSE: To heat to grain refining temperature in a short time by polishing the end part of a welded joint to a smooth slanting surface and heating to a specified temperature by a gas burner that has wide heating width.

CONSTITUTION: A fillet weld bead part 3, especially its end part 3' of steel materials 1, 2 such as Cr-Mo steel, high tensile steel etc. is polished to a smooth slanted surface by a grinder. Next, the distance between the end part 3' and the tip of a gas burner 4 is adjusted to 23W27mm and the end part is heated by the gas burner 4 to about 900°C. In this case, a gas burner for linear heating is used.


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Inventors:
HATSUTORI MASAJI
ANDOU MASAAKI
YAMAMOTO AKIRA
Application Number:
JP18055580A
Publication Date:
July 02, 1982
Filing Date:
December 22, 1980
Export Citation:
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Assignee:
NIPPON KOKAN KK
International Classes:
B23K31/00; C21D1/08; C21D9/50; (IPC1-7): B23K31/00; C21D1/08; C21D9/50



 
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