3d welding table
Nitriding treatment of three-dimensional welding platform:
Nitriding is a chemical heat treatment process in which nitrogen atoms penetrate into the surface of workpiece in a certain medium at a certain temperature. Gas nitriding is to put the workpiece into a closed container (nitriding furnace), through flowing ammonia gas and heating, after holding for a long time, the ammonia gas thermal decomposition produces active nitrogen atoms, which are constantly adsorbed on the surface of the workpiece, and diffused into the surface of the workpiece, so as to change the chemical molecules and structure of the surface, and obtain excellent surface performance.
After nitriding, the surface hardness, wear resistance, bite resistance, atmospheric and superheated steam corrosion resistance, tempering softening resistance and notch sensitivity of the platform were improved.
Blackening treatment of 3D welding platform:
Boiling black is the blackening treatment. Generally, it is a surface treatment method of three-dimensional platform and a common method of heat treatment of three-dimensional platform. The principle is to produce a layer of oxide film on the platform surface to isolate the air and achieve the purpose of rust prevention.