Application of cast titanium alloy in valve industry

The application of cast titanium alloy in valve industry has broad prospects and important significance. The following are some of the main applications of cast titanium alloy in the valve industry:
1. Marine titanium valve
In recent years, with the rapid development of China's economy, various industries have blossomed everywhere, valves as an essential general mechanical equipment, the market demand for products continues to increase, China's valve industry has also been rapid development.

The valve is usually composed of the valve body, valve cover, valve disc, valve stem, hot sheet, packing and driving parts, of which the selection material of the valve body and valve cover is the main material, the selection material of the valve disc (gate), ball valve, valve seat, valve stem and sealing valve seat is called the internal material, in addition to fastener material; The commonly used valve materials are gray cast iron, ductile iron, alloy steel, copper alloy, etc., which can be selectively diversified. However, with the further needs of production, researchers have found that in some harsh working environments and complex special conditions, conventional valve materials can no longer meet the needs of production and scientific research. At this time, titanium and cast titanium alloy have attracted people's attention because of their superior performance, and titanium valves have been developed to a certain extent.

2. Aerospace titanium alloy valve
At present, aerospace valves are mainly used in many control systems such as pneumatic, hydraulic, fuel and lubrication, and are more suitable for corrosion resistance and high ambient temperature environment, and are one of the important components of aerospace vehicles, engines and other departments. Traditional valves often need to be replaced by stages, and even can not meet the demand, and with the rapid expansion of the aerospace valve market size, titanium valves are also rising because of their superior performance.

3. Titanium valves for chemical industry
Chemical valve is generally used in high temperature, high pressure, corrosion resistance and large pressure difference and other general harsh environment, so for the application of chemical valve material selection is very important, early selection of carbon steel, stainless steel, etc., a period of time will appear rust phenomenon, need to be replaced and maintained. With the continuous development of casting titanium alloy technology and its superior performance has gradually been discovered, titanium alloy valves have also appeared in people's eyes.

Taking the chemical fiber industry refined terephthalic acid (PTA) production unit as an example, its working medium is mainly acetic acid and hydrobromic acid, which has strong corrosion, including nearly 8,000 globe valves and ball valves.