The explosive welding method of explosion welding aluminum steel is to place the clad aluminum plate on the base steel plate through the support, pave the buffer protective layer on the surface of the clad aluminum plate, place the explosive cloth on the surface of the buffer protective layer, and adopt the step gradient charge distribution method to reduce the charge per unit area in a gradient from the center of the clad aluminum plate to both ends, Large area aluminum steel composites were obtained by explosive welding. In the explosion welding aluminum steel method, the charge per unit area is directly proportional to the explosion area of aluminum steel composite material, and the charge per unit area is successively reduced in a gradient from the center of the laminated aluminum plate to both ends. The base plate is made of carbon steel or low alloy steel, and the clad plate is made of pure aluminum or aluminum alloy.
Expansion welding aluminum steel advantages:
1. Large area explosive welding can be realized to obtain high-quality large-area aluminum steel composites;
2. Thick clad aluminum steel composites can be manufactured by one-time explosive welding, which is convenient for production and improves efficiency;
3. The bonding strength of the composite interface is high and uniform, and the interface has no excessive melting, delamination and non composite problems.
Manufacture an expansion welding aluminum steel, the base steel plate is Q235B, the size is 40x1200x6000 Ka, the cladding is pure aluminum 1070, the size is 12x1250x6100, the support height between the cladding aluminum plate and the base steel plate is llmm, pave the buffer protective layer, use ammonium TNT explosive and lay it directly on the surface of the buffer protective layer, The charge per unit area within 500mm from the center of the plate to both sides is 4.0g/cm2, the charge per unit area within 1500mm from both ends of the plate is 2.8g/cm2, and the charge per unit area in other areas is 3.8 ~ 2.6g/cm. The aluminum - ^ composite material obtained by industrial electric detonator and explosive welding has good composite quality. After sampling and bonding strength testing, it is proved that the interface is firmly bonded, The fracture appears on the aluminum side, the interfacial shear strength is ^ 80MPa, there is no excessive melting, delamination and non recombination, and the explosive recombination rate is 100%.
