Brazing process for achieving connection of hard alloy and steel dissimilar materials through low-silver foil strip brazing filler metal and application of brazing process

The invention discloses a brazing process for connecting hard alloy and steel dissimilar materials through low-silver foil strip brazing filler metal and application of the brazing process. According to the brazing process, the hard alloy and the steel are connected, the advantages of the hard alloy and the steel are fully played, the problem of precipitation of hard and brittle phases at a weld joint interface is avoided, the problem of excessive dissolution of base metal is solved, and the service life of the hard alloy and the steel is prolonged. And the shear strength is high. Compared with other welding technologies, the brazing technology for achieving connection of the hard alloy and the steel dissimilar materials through the low-silver foil strip brazing filler metal has the advantages of being good in welding effect, low in production cost, safe and environmentally friendly. Meanwhile, the shearing strength at the welding position is high, the corrosion resistance is excellent, and the method is part