Method of brazing articles of stainless steel
AssigneeAlfa Laval Corporate AB
InventorsPer Erik Sjodin, Jens Rassmus
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Abstract
The present invention relates to a method of brazing articles of stainless steel, which method comprises the following steps: step (i) applying an iron-based brazing filler material to parts of stainless steel; step (ii) optionally assembling the parts; step (iii) heating the parts from step (i) or step (ii) to a temperature of at least about 1000° C. in a non-oxidizing atmosphere, a reducing atmosphere, vacuum or combinations thereof, and heating the parts at the temperature of at least about 1000° C. for at least about 15 minutes; step (iv) providing articles having an average hardness of less than about 600 HV1 of the obtained brazed areas. The present invention relates also to brazed articles of stainless steel.
Claims20
A brazed article of stainless steel comprising at least about one base material of stainless steel and an iron-based brazing filler material wherein the obtained brazed areas, pores, cracks, gaps, joints, or crevices having a tensile strength of at least about 110 N/mm2.
A brazed article of stainless steel comprising at least about one base material of stainless steel and an iron-based brazing filler material wherein the obtained brazed areas, pores, cracks, gaps, joints, or crevices having an average hardness less than about 600 HV1.
Dependencies are inferred from the claim text.