The following aspects should be paid attention to in the welding repair and anti-rust treatment of C86300 tin bronze bushing castings:
Gas welding: Use a strictly neutral flame, the flame energy is the same as that of gas welding carbon steel, and select a homogeneous welding wire with a tin content 1%~2% higher than the parent material.
Welding rod arc welding: Mainly used for casting repair welding, select phosphor bronze welding rods or special tin bronze special welding rods, and weld after preheating.
Manual tungsten inert gas welding: The tin content of the welding wire needs to be 1%~2% higher than the parent material, the weldment needs to be preheated, and the welding is carried out with direct current.
Cleaning treatment: Thoroughly clean the surface of the copper sleeve to remove impurities such as oil, dust, etc.
Rust-proof coating: Apply anti-rust coating, such as paint, wax, etc., to ensure that the coating is uniform and without omissions.
Passivation treatment: A dense oxide film is formed on the surface of the copper sleeve by chemical methods to improve corrosion resistance.
