Fountain pump several common materials

Fountain pump several common materials
First, cast iron
1, gray cast iron: is the most commonly used a cast iron, the national standard code for the HT. General water pump pump, impeller, pump cover, suspension, etc. are used in the material, usually used in three grades: HT150, HT200, HT250. For the base, pad and other non-main parts of the use of HT150, pump, pump cover, suspension and so on more use HT200, and impeller, ring ring, sleeve and so on more use HT250.
2, ductile iron: is a comprehensive performance of better cast iron, GB code-named QT. Because of its mechanical properties close to the steel, while its casting performance, processing performance is better than steel, it is usually used as a substitute for cast steel. The most commonly used grades are: QT450-10, QT500-7, QT600-3. Due to casting and other reasons, the current pump impeller using the material, especially the cutting of the open-type impeller cost are superior.
There are also corrosion-resistant cast iron - high silicon cast iron, wear-resistant cast iron - white cast iron, high toughness cast iron - malleable cast iron, etc., due to the existence of a certain degree of difficulty, the products used is not much.
Second, cast steel
As the strength of cast steel is high, usually when the pressure> 1.6Mpa, the pressure parts are mostly cast steel, the national standard for the ZG, the most commonly used grades for the ZG230-450.
Third, stainless steel
The most widely used stainless steel for the austenitic stainless steel, such as 0Cr18Ni9,1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and so on. In addition to hydrochloric acid, dilute sulfuric acid and other small number of media, the austenitic stainless steel is an excellent corrosion-resistant materials, chemical pump is the most commonly used corrosion-resistant materials. Martensitic stainless steel such as 2Cr13, 3Cr13, its mechanical properties is better than austenitic stainless steel, usually used as a pump shaft and sleeve material, in addition, high alloy stainless steel (20 alloy) and double stainless steel is also ideal Corrosion materials.