Metal fusion bonding – Process – With protecting of work or filler or applying flux
Reexamination Certificate
2008-03-25
2008-03-25
Stoner, Kiley (Department: 1793)
Metal fusion bonding
Process
With protecting of work or filler or applying flux
C228S221000, C228S256000
Reexamination Certificate
active
10922953
ABSTRACT:
A method for brazing two or more of stainless steel components for use in medical equipment, in which one component is joined to other component using a brazing material containing Au of which amount is 62.5 wt % or higher, the method comprising the steps of: a first step in which the components are subjected to a heat treatment at a temperature of 1,050 to 1,200° C. in a hydrogen containing atmosphere or in a vacuum; a second step in which one of the components is allowed to close to the other component so as to form a gap therebetween; and a third step in which the brazing material in a molten state is supplied into the gap to join the components together to manufacture a metal assembly. The joint portions formed in the metal assembly have excellent chemical resistance and corrosion resistance, and thus the metal assembly is suitably used in an endoscope.
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Kamiya Naoki
Murai Wataru
Obata Yoshihiro
Sato Yasuyuki
Shimizu Hideo
Greenblum & Bernstein P.L.C.
PENTAX Corporation
Shinwa Heat Treatment Co., Ltd.
Stoner Kiley
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