Process for hydrogen-impermeable brazing of austenitic structura

Details Process for hydrogen-impermeable brazing of austenitic structura Process for hydrogen-impermeable brazing of austenitic structura

1983-05-04

1985-05-28

Ramsey, Kenneth J.

Metal fusion bonding

Process

With protecting of work or filler or applying flux

220453, 228198, 228248, 22826315, 428677, B23K 104, B23K 119

Patent

active

045195374

ABSTRACT:
The invention relates to a process for the hydrogen-impermeable brazing of austenitic structural steel parts. These are initially loosely joined at soldering points with the addition of definite amounts of solder and soldering agent and subsequently brought to soldering temperature in a furnace under a high vacuum. In order to obtain a satisfactory wetting characteristic, on the one hand, and a good hydrogen resistance, on the other hand, a bicomponent soldering process is provided, with about 1 part by weight of nickel-base solder and about 3 parts by weight of bronze-base solder. The nickel-base solder contains about 1-3% by weight of boron and 2-5% by weight of silicon. The nickel-base solder may amount to at most about 30% by weight of solder. Such soldered joints are used for storage pipes at metal hydride reservoirs.

REFERENCES:
Radzievski et al., "Reinforced Brass Solder for Vaccum Brazing Steel", Automatic Welding, Apr. 1983, pp. 48-50.

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