What material is the impeller material of the pump, CL, made from abroad

The impeller material is generally steel or bronze, CL is the abbreviation of the chemical element "chlorine", chlorine will cause electroerosion of stainless steel, it should only be used as an auxiliary evaluation standard of the material.

Bronze has better seawater resistance than stainless steel (304,316), and stainless steel is afraid of cl pitting.

Bronze ** and 304 stainless steel are not much, and 316 will be more expensive.

Copper impeller (65, 85 copper ** is different) is most often used in fire fighting, and stainless steel is used in some acid and alkali occasions. Or when a clean water source is required.

Commonly used materials for impellers.

Cast iron, bronze, stainless steel, manganese bronze, Monel, inconel, and non-metallic materials.

Non-metallic material composition.

PPS plastic, phenolic resin and so on.

There is no impeller made of phenolic resin in China, and there is a sims company in the United States that specializes in making this graphite-based reinforced phenolic resin fiber material simsite, and has been applied to the impeller of centrifugal pumps. Phenolic resins are extremely alkali resistant, making them ideal for pumping seawater.

The corrosion and wear of the impeller are mainly caused by the corrosive gas contained in the conveying medium of the fan. The types of corrosion caused by different conveying media are also different. In order to prevent the occurrence of corrosion and impeller corrosion and wear, the following measures are usually used:

Choose stainless steel with strong corrosion resistance as the impeller material; Coating or spraying anti-corrosion layer on the surface of the impeller and improving the surface quality of the impeller to solve the problem of corrosion and wear.

The water pump is to convey a fluid liquid, and the liquid can be lifted and discharged by the motor drive shaft to drive the impeller to rotate. Depending on the liquid to be conveyed, the selected pump impeller form and material will vary.

There are five main types of water pump impeller materials: cast iron impeller, aluminum alloy impeller, brass impeller, stainless steel impeller, plastic impeller and so on. Cast iron impellers are generally used for neutral liquids, brass impellers are used for oil, and aluminum alloy impellers, stainless steel or plastic materials are used for hygienic food-grade fluid raw materials.

Corrosive liquids should be more corrosive, and brass impellers, stainless steel impellers, and plastic impellers should be selected.

There are three types of water pump impellers: closed, half-start and open. Closed impellers can be used for ordinary liquids without granular fibers, and instead semi-start and open impellers should be considered for the passage of liquids.

At present, the domestic desulfurization pump impeller mainly has CR30, A49, foreign is duplex stainless steel, and there is a silicon carbide casting impeller is the most wear-resistant, and it can be repaired with Sicoat material if it is worn, and the impeller of net long-distance repair is not bad.