The processing cost of more than 60% of the total cost is the focus of research on cost reduction in various countries. In the production process of titanium parts and components, not only the process is complicated, but also a large amount of residual titanium is produced during the production process, and the production cycle is longer, which leads to increased component manufacturing costs and hinders the wider promotion and application of titanium.
Casting is a classic net (near) forming process. The parts produced do not need to be machined or machined very little, thus saving a lot of metal. Casting can often produce parts with complex shapes, and these parts are complicated by other traditional manufacturing methods, and the production cost is high, especially for the titanium metal with relatively high material prices. At present, titanium castings are widely used in the aviation industry. In the automotive industry, the components produced by casting include valves, turbochargers, etc.
Powder metallurgy, as a modern advanced metallurgy and material processing technology, has played an important role in the field of titanium industry. Using titanium powder metallurgy near-molding technology can directly produce finished products or parts close to the finished product size, which reduces raw material consumption and shortens the processing cycle, and the cost is saved by 20% to 50% compared with conventional processes. In the automotive industry, titanium powder metallurgy near-shaping technology is particularly valued. In Japan, automobile powder metallurgy parts are widely used in engines and gearboxes. Among them, connecting rods, valve seats, valves, pulleys, synchronizer hubs, and synchronization rings are complex and demanding key parts. At present, the research of titanium powder metallurgy is in the stage of rapid development, mainly including several aspects, one is the high-quality and low-cost preparation technology of titanium powder and its industrialization; the second is the preparation technology of titanium powder metallurgy, and its application in the automotive industry.
In addition, laser forming technology (integrating the latest achievements of laser technology, CAD / CAM technology and material technology) according to the computer model, can directly form the final part of complex shape with alloy powder at one time, the performance of the manufactured titanium parts is between Between casting and forging, the cost is reduced by 15% to 30%, and the delivery time is shortened by 50% to 75%. Metal powder injection molding technology (MIM) is a fast-developing near (net) molding powder metallurgy technology that can manufacture high-quality, high-precision complex parts, and is considered to be one of the most advantageous molding technologies; Titanium coating technology is also a new process that can reduce costs.
It can be seen that reducing the price of titanium materials must start with the development of low-cost new alloy systems and improved production processes, in order to solve the problem of titanium for automobiles in a real sense, and to make titanium for automobiles more competitive Prospects.