Drill rod solder and fusion welding have how old distinction after all

The essence of fusion welding is a metal fuse and crystallize, be similar to small-sized cast a process; The essence that presses solder is to pass the plasticity of place of metallic desire solder to be out of shape, squeeze the oxide etc impurity that break or pushs combinative scale, make its pure metal is contacted cheek by jowl, atomic distance reachs normal stress scale between the interface and firm union; The essence of drill rod solder is capable person of mother of moisture of makings of drill rod of use liquid state, fill connect is interstitial, and with mother capable person each other come true dispersedly join weldment. Drill rod solder is linked together through the 3rd kind of metal, not be true meaning solder. Fusion welding relies on to heat namely arrive join.

Fusion welding: The workpiece part that is about to solder heats to melt, the treatment method that welding line is made after condensation and makes component part joins together. Include the arc welding, gas welding, electroslag welding, electron beam solder, solder that stimulate drill rod;

What drill rod solder expects through drill rod is wet and capillary permeant common result makes material is united in wedlock, melting point lower than mother capable person drill rod stuff heats to melt, but heat temperature the melting point under mother capable person, capable person of the welding line of stuff of drill rod stuff that uses melt, damp mother and with mother capable person each other form an organic whole dispersedly solder method.

Drill rod solder divides kinds big: Solder of hard drill steel and solder of soft drill rod. Of solder of hard drill steel heat temperature is more than 450 degrees, tensile strength is more than 200 MPa, often use drill rod of silver radical, copper radical to expect, comfortable answer at exercise muscularity, the circumstance with environmental high temperature, of lathe tool of example hard alloy, geological broach solder. Of solder of soft drill rod heat temperature is less than 450 degrees, tensile strength is less than 70 MPa comfortable at stress small, the environment with exercise low temperature. The stannum of example circuit base smooth solder of drill rod solder.

Drill rod solder: Solder in the process, choose lower than melting point of mother capable person metal stuff to make drill rod material, heat weldment and drill rod makings to expect to prep above drill rod the melting point, temperature under melting point of mother capable person.