Why do cracks occur in silver brazing between Q345R and TA2?
Thread Content
When Q345R and TA2 are welded using silver-copper 50 filler metal, cracks always occur. What methods can be used to prevent the formation of cracks?
Although I don’t know how welding works, it’s great that the two materials can be welded together
Not well cleaned. The thermal conductivity of the base materials differs by a factor of 5, resulting in uneven contraction during cooling and high internal stresses in the brazed joint. . The heating in the vacuum furnace is uneven. . . There are too many impurities in the solder. .
If your welding has no cracks, you’ll have solved a world-class problem.