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閥門電動裝置常用的材料有哪些？

Time：2019/5/7 16:19:16 View 23212

To select the right valve material, engineers must consider the flow media, pressure, flow rate, and intended purpose, while the temperature of the flowing media and the operating environment are factors that need to be considered for the valve material. Corrosion can occur at higher temperatures. In addition, temperatures can cause different materials to expand and contract at different rates, which can cause leakage problems, excessive binding stress on valve components, or the onset of failure.
Components such as valve actuators, valve seats and valve bodies are typically provided in materials that provide varying ranges of corrosion, temperature and wear resistance. Commonly applied materials include:
1. Ductile Iron: Due to its low cost and availability, ductile iron provides the added benefit of easily absorbing impact. The downside is that ductile iron has poor corrosion resistance.
2. Brass and Bronze: Brass and bronze valves are also available at low cost and are readily available. Increased corrosion resistance compared to ductile iron.
3, 316 stainless steel: known for its excellent corrosion resistance, 316 stainless steel valves are more expensive than cast iron, brass and bronze valves.
4. Monel alloy: Nickel-copper alloy Monel has excellent corrosion resistance. It is usually used for the cladding of valve trims.
5. Inconel Nickel Alloy: Inconel is an alloy of nickel, chromium and iron used to treat corrosive media at higher temperatures.