Small spots on the back of automobile molding machine may rust. These dots are the solder joints of the metal sheet. Although the
Small spots on the back of automobile molding machine may rust. These dots are the solder joints of the metal sheet. Although the current automobile steel plates are basically galvanized rust-proof steel plates, if the rust-proof treatment is not done after the sheet metal is formed, or the rust-proof is not done well, the galvanized layer of the steel plate is easily damaged and the metal plate will rust.
Whether the solder joints of sheet metal will rust is also related to the choice of sheet metal materials. Many automobile sheet metal parts are welded together by spot welding, oxygen welding, arc welding or gas shielded welding, so it is required that the sheet metal parts must have good welding performance. This is especially important in automobile maintenance and repair. Materials with good weldability have high welding strength and low cracking tendency.
I want to be a plastic surgeon. What qualifications do I need and what university major do I need to study?
To become a plastic surg