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Centrifugation casting pipe EN10312
Process steps for centrifugal casting tube:
1. Mold preparation: preheat the metal mold and coat it with refractory coating to prevent the casting from sticking to the mold.
2. Pour the metal: Pour the molten metal into a rotating mold.
3. Centrifugal rotation: the mold rotates at high speed, and the centrifugal force is used to distribute the metal evenly on the inner wall of the mold.
4. Cooling and solidification: The metal is gradually cooled and solidified during rotation.
5. Release: After stopping the rotation, remove the casting and conduct subsequent processing.
Advantages of the centrifugal cast pipe:
1. Tense tissue: the centrifugal force makes the impurities and gas in the metal discharge outward, and the casting tissue is more uniform and dense.
2. Good mechanical properties: due to the dense tissue, the cast pipe strength, wear resistance and corrosion resistance are good.
3. High production efficiency: suitable for mass production, and the degree of process automation is high.
4. Material saving: Centrifugal casting can reduce the processing allowance and reduce the material consumption.
In the manufacturing of centrifugal cast pipes, EU countries mainly use the following materials to meet the requirements of different application scenarios:
1. Ductile iron (Ductile Iron)
-Features: Ductile iron has high strength, good toughness and wear resistance, and also has good corrosion resistance.
-Application: widely used in water supply, drainage pipes and natural gas transmission pipelines.
-Standard: comply with EU standards such as EN 545 (drinking water pipe) and EN 598 (drainage pipe).
2. Grey cast iron (Grey Cast Iron)
-Features: grey cast iron has low cost, good casting performance and wear resistance, but poor toughness.
-Application: mainly used for low-pressure drainage system and some non-pressure pipes.
-Standard: meet the EN 877 (drainage pipe) and other standards.
3. Stainless steel (Stainless Steel)
-Features: Stainless steel has excellent corrosion resistance, high temperature resistance and mechanical strength, suitable for harsh environment.
-Application: highly corrosive medium conveying pipeline used in chemical, food processing, pharmaceutical and other industries.
-Common brand number: 304,316L, etc., comply with EN 10312 (stainless steel pipe) standard.
4. Carbon steel and low-alloy steel (Carbon Steel and Low Alloy Steel)
-Features: Carbon steel and low alloy steel have high strength, good weldability and machining performance.
-Application: for oil and gas pipelines and high pressure industrial pipelines.
-Standard: comply with EN 10217 (welded steel pipe) and EN 10216 (seamless steel pipe) standards.
5. Dual-phase stainless steel (Duplex Stainless Steel)
-Features: dual-phase stainless steel has the advantages of both austenite and ferrite, with high strength, excellent corrosion resistance and stress corrosion resistance.
-Application: A demanding environment for the Marine engineering, chemical, and oil and gas industries.
-Common brand: 2205 (UNS S32205), EN 10088 standard.
6. Nickel-based alloy (Nickel-Based Alloys)
-Features: Nickel base alloy has extremely high corrosion resistance, high temperature resistance and mechanical properties.
-Application: for the transportation of extreme environments, such as high temperature, high pressure, strong corrosive media.
Common signs: Inconel 625, Hastelloy C276, etc.
Eu countries have strict standards for the material and performance of centrifugal cast pipes. The common standards include:
-EN 545: Standard for ductile iron pipe for drinking water pipes.
-EN 598: Standard for ductile iron pipe for drainage and sewer pipes.
-EN 10312: Standard for stainless steel piping.
-EN 10217: Standard for welded steel pipe.
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