First, cast iron
1, gray cast iron: is the most commonly used cast iron, GB code-named HT. General water pumps of the pump, impeller, pump cover, suspension, etc. are used in the material, usually used in three grades: HT150, HT200, HT250. For the base, plate and other non-essential parts and more to use HT150, pump, pump cover, suspension and other use HT200, and impeller, mouth ring, sleeve and more use HT250.
2, ductile iron: cast iron is a better overall performance, GB code-named QT. Because of its close to the mechanical properties of 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 cutting open impeller are cost-effective.
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, due to the processing there is a certain degree of difficulty, the products used are not many.
Second, cast steel
As the strength of cast steel turn high, usually when the pressure> 1.6Mpa, the pressure parts to use more cast steel, the national standard code-named ZG, the most commonly used grades ZG23 0-450.
Third, stainless steel
The most widely used stainless steel is austenitic stainless steel, such as 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and so on. In addition to hydrochloric acid, dilute sulfuric acid and a few other 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 are better than austenitic stainless steel, usually used for shaft and sleeve materials, In addition, high alloy stainless steel (20 alloy) and double stainless steel is also ideal resistance Corrosion materials.
Fourth, carbon structural steel
Usually divided into ordinary carbon structural steel and high-quality carbon structural steel. The most representative of ordinary carbon structural steel for the Q235, various types of steel, steel and more use of the material; the most representative of high-quality carbon steel for the 45 steel, its widely used in non-corrosion requirements of the pump shaft material.
Fifth, the alloy
The most representative alloy steel for the 40Cr, usually used for high-strength pump shaft material.
6, non-metallic materials
Pump non-metallic materials are mainly used for sealing, such as PTFE, fluorine rubber, nitrile rubber. PTFE which has excellent corrosion resistance, high temperature performance for the chemical pump seal and mechanical seal static seal for 250 ℃ in almost all of the chemical medium, the shortcomings of the higher hardness, the difficulty of assembly Big.
1, gray cast iron: is the most commonly used cast iron, GB code-named HT. General water pumps of the pump, impeller, pump cover, suspension, etc. are used in the material, usually used in three grades: HT150, HT200, HT250. For the base, plate and other non-essential parts and more to use HT150, pump, pump cover, suspension and other use HT200, and impeller, mouth ring, sleeve and more use HT250.
2, ductile iron: cast iron is a better overall performance, GB code-named QT. Because of its close to the mechanical properties of 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 cutting open impeller are cost-effective.
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, due to the processing there is a certain degree of difficulty, the products used are not many.
Second, cast steel
As the strength of cast steel turn high, usually when the pressure> 1.6Mpa, the pressure parts to use more cast steel, the national standard code-named ZG, the most commonly used grades ZG23 0-450.
Third, stainless steel
The most widely used stainless steel is austenitic stainless steel, such as 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and so on. In addition to hydrochloric acid, dilute sulfuric acid and a few other 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 are better than austenitic stainless steel, usually used for shaft and sleeve materials, In addition, high alloy stainless steel (20 alloy) and double stainless steel is also ideal resistance Corrosion materials.
Fourth, carbon structural steel
Usually divided into ordinary carbon structural steel and high-quality carbon structural steel. The most representative of ordinary carbon structural steel for the Q235, various types of steel, steel and more use of the material; the most representative of high-quality carbon steel for the 45 steel, its widely used in non-corrosion requirements of the pump shaft material.
Fifth, the alloy
The most representative alloy steel for the 40Cr, usually used for high-strength pump shaft material.
6, non-metallic materials
Pump non-metallic materials are mainly used for sealing, such as PTFE, fluorine rubber, nitrile rubber. PTFE which has excellent corrosion resistance, high temperature performance for the chemical pump seal and mechanical seal static seal for 250 ℃ in almost all of the chemical medium, the shortcomings of the higher hardness, the difficulty of assembly Big.
Manufacturers recommend: Shenlong stainless steel fountain pump
Keywords:Fountain pumps, materials and materials, cast iron, cast steel
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