Which valve materials are suitable for laboratory tools
Release Time:
2022-09-13
The choice of grinding tool material should be determined by the material and performance of the valve grinding parts. The grinding tool material should have the characteristics of: fine and uniform structure, good sand embedding performance, good wear resistance, sufficient rigidity, no deformation, and its hardness is softer than that of grinding parts.
The materials usually used to make research tools are as follows.
Cast iron: Cast iron contains flake graphite, which has good wear resistance and lubricity, and high strength. It also has the advantages of low cost and easy processing. Therefore, cast iron grinding tools are suitable for grinding workpieces of various materials such as cemented carbide, hardened steel, and non-ferrous metals, and are also suitable for sand-coated grinding, sand-embedded grinding, and abrasive cloth grinding. The materials used for cast iron tools include gray cast iron and nodular cast iron, and the general hardness is HB 120-220. Cast iron grinding tools can guarantee the quality, and at the same time, the grinding efficiency is high, and it is widely used.
Low-carbon steel: Low-carbon steel has greater toughness than cast iron, and can adapt to workpieces such as elongated round holes, tapered holes, and threads that are rarely ground by cast iron. Low-carbon steel is generally used as rough grinding materials.
Copper: Copper has high toughness and good wear resistance. It is suitable for rough grinding valves with large machining allowances and low roughness requirements. It can also function as a low-carbon steel grinding tool (but the cost is high, and it is generally rarely used).
Aluminum: Aluminum is softer than copper and is suitable for fine grinding of soft metals such as copper.Lead, Babbitt: Suitable for polishing and grinding workpieces of mild steel or other soft materials.
Glass: Glass is hard and brittle, suitable for grinding and polishing workpieces, especially for hardened steel.
Asphalt: Asphalt is soft, suitable for grinding and polishing marine valves of brittle and hard materials such as glass and crystal, and also suitable for fine polishing of hardened steel. Asphalt is highly adaptable to the shape of the workpiece.
Leather, Felt, Polyester: Soft and often used to polish workpieces. The polyester fabric is flat and even, and the liner is placed on a flat grinding tool, and the effect of lapping and polishing is good.
In order to save materials and reduce grinding tools, grinding tools are often made of dual-purpose, which can not only apply abrasives, but also set off emery cloth or sandpaper. The grinder specially set off the emery cloth or sandpaper is generally made of carbon steel or cast iron.
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High, medium and low pressure ball valves, gate valves, globe valves, butterfly valves, steam traps, regulating valves, pressure reducing valves, hydraulic control valves, throttle valves, power station valves, emergency shut-off valves, and other products.
We are committed to:
High, medium and low pressure ball valves, gate valves, globe valves, butterfly valves, steam traps, regulating valves, pressure reducing valves, hydraulic control valves, throttle valves, power station valves, emergency shut-off valves, and other products.
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