Titanium alloys have the advantages of light weight, high specific strength and good corrosion resistance, so they are widely used in the automotive industry, and the most widely used titanium alloys are automotive engine systems. There are many benefits to using titanium alloys to manufacture engine parts.
The low density of titanium alloy can reduce the inertial mass of moving parts, while the titanium valve spring can increase free vibration, reduce the vibration of the body, and improve the engine speed and output power.
Reduce the inertial mass of moving parts, thereby reducing friction and improving the fuel efficiency of the engine. Selecting titanium alloy can reduce the load stress of related parts and reduce the size of the parts, thereby reducing the quality of the engine and the whole vehicle. Reduced inertial mass of components reduces vibration and noise, improving engine performance. The application of titanium alloys in other components can improve the comfort of people and the aesthetics of cars. In the application of the automobile industry, titanium alloys have played an immeasurable role in energy saving and consumption reduction.
Although
titanium alloy parts have such superior properties, there is still a long way to go before titanium and its alloys are widely used in the automotive industry, due to problems such as high price, poor formability and poor welding performance.
The main reason preventing the widespread use of titanium alloys in the automotive industry is the high cost.
Whether it is the initial smelting of the metal or the subsequent processing, the price of titanium alloys is much higher than that of other metals. The cost of titanium parts acceptable to the automotive industry is $8-13/kg for connecting rods, $13-$20/kg for valves, and $8/kg for springs, engine exhaust systems and fasteners. Below USD/kg. It is 6 to 15 times that of aluminum sheets and 45 to 83 times that of steel sheets.
