The traditional processing of titanium alloy generally adopts melting and casting technology, and the latest processing technology can be divided into the following:
1. Near-net forming technology;
2. Line friction welding technology;
3. Superplastic forming technology;
4. Computer simulation of material preparation and processing.
Near net forming technology includes laser forming, precision casting, precision die forging, powder metallurgy, jet forming and other methods.
Powder metallurgy is a new process of manufacturing titanium parts by using titanium powder or titanium alloy powder as raw material through molding and sintering.
The first is the production of powder, generally mechanical alloying method, the use of ball mill on the raw materials for a strong impact, grinding and stirring. Then the alloy that has been formed into powder is pressed into shape. There are two pressing methods, pressure forming and non-pressure forming. The purpose of this step is to make the blank of certain shape and size, and make it have certain density and strength. Then, discharge plasma sintering is carried out on the prepared blank material, special sintering power supply and pressing pressure are applied to the sintered powder by upper and lower die punching and electrified electrode, and high performance titanium material is prepared through discharge activation, thermoplastic deformation and cooling. After plasma sintering of titanium alloy for subsequent treatment, generally heat treatment or plastic processing.
