The brazing methods of tungsten steel and steel mainly include oxygen-acetylene flame brazing, high frequency induction brazing, contact resistance brazing, copper immersion brazing and brazing in heating furnace, etc.
1. Commonly used brazing methods
①Oxygen-acetylene flame brazing is one of the most commonly used brazing methods.
②High frequency induction brazing
③Contact brazing
④Immersion copper brazing
2. Commonly used protective coatings
There are two kinds of protective coatings commonly used in tungsten steel brazing.
①The black ink used for printing and the quartz powder of No. 240 grain size are mixed evenly in the ratio of 1:2, and then made into a paste, which is ready to use.
②Use 20% Al2O3 powder and 80% graphite powder to mix evenly, then mix with 5% water and 50% water glass (modulus 1.2, density 1.6g/cm3) liquid. The higher the strength of the coating.
