Non-vacuum Diffusion Welding Method For Welding Porous Titanium Rods

Non-vacuum diffusion welding is a new method to solve the welding of porous titanium rods. It is a solid-state diffusion connection of active metals in the atmosphere using beer-rushed energy storage power supply. It has outstanding advantages such as simple process, high productivity, joints and base materials and other properties. It is not only used for welding porous materials such as titanium, nickel, copper, stainless steel, but also for the welding of dense foils of some non-ferrous metals or dissimilar metals.
In recent years, with the development of metallurgy, chemical industry and light industry, it is required to provide new corrosion-resistant filter materials. The welding problem of porous titanium material was raised prominently.
According to the structural characteristics and working conditions of various porous titanium filters, to make the joint permeable, it is only possible to achieve diffusion connection in the solid state.
Titanium reacts with oxygen, hydrogen, nitrogen, and other impurities at high temperatures above 400 ° C to contaminate the welded joint, and its performance deteriorates rapidly. Therefore, to achieve diffusion welding of titanium alloys, generally under vacuum or inert gas protection. If the energy storage power supply can be used to locally heat the porous titanium material at high speed, it is possible to avoid atmospheric pollution and realize diffusion welding under non-vacuum conditions. The completion of high-speed diffusion can be achieved by adjusting the energy parameters.