Copper and stainless steel dissimilar metal water adapter vacuum brazing technology method
A technology of dissimilar metals and brazing technology, applied in metal processing equipment, welding/welding/cutting items, manufacturing tools, etc., can solve the problems of large differences in melting point, thermal conductivity and linear expansion coefficient, etc., and achieve reliable and improved methods The effect of high product qualification rate and high production efficiency
Active Publication Date: 2008-06-18
NUCLEAR POWER INSTITUTE OF CHINA
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Abstract
The invention discloses a vacuum brazing technology method between copper and stainless steel dissimilar metal water connector, comprising processing each part of the water connectior, controling the processing precision and component assembly clearance; washing the part of water connectior; assembling water connections and putting in special fixture. Put the fixture in vacuum brazing furnace and carry out braze welding according to the following brazing technology: 1) take 35 minutes to make the furnace temperature to rise to 650 DEG C at a uniform speed; 2) continue to preserve heat for 20 minutes; 3) rise the furnace temperature at a uniform speed to 890 DEG C in 20minutes; 4) continue to preserve the heat for 20 minutes; 5) then rise the furnace temperature to 970 DEG C+-10 DEG C at a uniform speed in 15 minutes; 6) Continue to preserve heat for 5 minutes; 7) then stop heating and cool naturally; 8) on the next day take out the water connector from the fixture; 9) carry out the acceptance test by using the ultrasonic automatic testing device. The technical problem that the annular gap of the water connector is not fully filled and can be corroded is solved; the invention has the advantages of reliable method and high production efficiency, and can effectively improve the qualified rate of the products.
Application Domain
Soldering apparatusWelding/soldering/cutting articles +1
Technology Topic
Dissimilar metalBrazing +5
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