Punching-shearing method for inspecting quality of butt welded joint
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United States of America Patent
Stats
-
Nov 22, 1983
Grant Date -
N/A
app pub date -
Feb 3, 1982
filing date -
Jun 18, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A punching-shearing method for inspecting the quality of a butt welded joint comprises pressure butt welding steel members under heat to form an annular bulge around the joint portion of the steel members, punching-shearing the bulge under red heat immediately after the pressure butt welding process from one side of the bulge in parallel with the axes of the steel members by use of a shearing die having higher and lower shearing edge portions so that the higher shearing edge portions penetrate the bulge prior to the lower shearing edge portions, so as to cause the base of the bulge to remain around the joint portion in a slightly higher position than the peripheral surfaces of the steel members, and determining the quality of the joint portion from the peripheral surface of the base of the bulge remaining on the joint portion.
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