Method for producing a multilayer thin-walled bellows of stainless steel
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United States of America Patent
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Apr 24, 2001
Grant Date -
N/A
app pub date -
Sep 16, 1999
filing date -
Feb 4, 1999
priority date (Note) -
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Abstract
The method for prodicing a multilayer thin-walled bellows of stainless steel consists of manufacturing round billets by welding the sheets, packing the round billets into a multilayer bank, corrugating the bank for forming the multilayer bellows and the bellows tightness testing. The round billets are manufactured of the preliminary cut sheets of given dimensions by their electric arc pulsed gas-shielded welding. The packed multilayer bank is welded from two sides over the end faces and subjected to heat treatment by its heating up to the temperature of 1000-1130.degree. C. in the shielding medium and holding at this temperature during 20-45 minutes with subsequent cooling.
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