? Wuxi Duorunde Steel Tube Co., Ltd (My Answer); The manufacturing process of seamless precision alloy steel tubes, seamless bright precision tubes and alloy steel tubes is relatively complex and involves a number of links and key technologies. The manufacturing process of these steel tubes will be described in detail below:?
#Automotive manufacturing ? #Military industry ? #Machining ? #Electronic equipment ? #Medical equipment ? #Construction machinery ? #? railroad locomotives ? #? Aerospace ? #? Ships ? #? Injection molding machines ? #? Die casting machines ? #? Machine tooling ? #? Diesel engines ? #? petrochemicals ? #Power station ? #Boiler equipment
I. Manufacturing process of seamless precision alloy steel tubes Seamless precision alloy steel tubes are a kind of high-precision, high-strength steel tubes, and their manufacturing process mainly includes the following links: ?
1. smelting: vacuum induction furnace or electroslag remelting furnace and other equipment, the alloying elements and raw materials melted into steel. The smelting process requires strict control of chemical composition, impurity content and other indicators.
2. Continuous casting: the smelted steel is poured into the continuous casting machine for solidification molding, forming billets. Continuous casting process needs to control the temperature, speed and other parameters to ensure the quality and performance of the billet.
3. Heating: the billet will be put into the heating furnace to a certain temperature, in order to prepare for rolling. During the heating process, the heating speed and temperature need to be controlled to avoid cracks and other defects in the billet.
4. Rolling: multi-pass rolling process, the heated billet rolled into the required shape and size. The rolling temperature and deformation of each pass need to be precisely controlled to ensure the shape and size accuracy of the steel pipe.
5. Cooling: The rolled steel pipe is cooled to eliminate internal stress. The cooling process needs to control the cooling speed and temperature to avoid cracks and other defects in the steel pipe.
6. Straightening: The cooled steel pipe is straightened to eliminate bending and twisting. The straightening process needs to control the straightening temperature and pressure to ensure the straightness and precision of the steel pipe.
7. Non-destructive testing: Non-destructive testing of the steel pipe to ensure that there are no cracks, pores and other defects. Commonly used non-destructive testing methods include ultrasonic flaw detection, eddy current flaw detection and so on.
8. Quality testing: quality testing of steel pipe, including dimensional accuracy, surface quality, metallurgy and other aspects of the test. The subsequent processing can only be carried out after the test 8.
9. Packing: The tested alloy precision steel pipe is packed to prevent rust and pollution. Before packing, anti-rust treatment is required, such as applying anti-rust oil.
Two, seamless bright precision tube manufacturing process Seamless bright precision tube is a kind of steel tube with high surface finish and high dimensional accuracy, and its manufacturing process mainly includes the following links:
1. Smelting: similar to the smelting process of seamless precision alloy steel tubes, seamless bright Smelting of precision tubes also needs to control the chemical composition, impurity content and other indicators. At the same time, according to the product specifications and requirements, you need to choose the right grade of steel and material.
2. Continuous casting: the smelted steel is poured into the continuous casting machine for solidification molding, forming billets. Continuous casting process needs to control the temperature, speed and other parameters to ensure the quality and performance of the billet.
3. Heating: the billet will be put into the heating furnace to a certain temperature, in order to prepare for rolling. During the heating process, the heating speed and temperature need to be controlled to avoid cracks and other defects in the billet.
4. Rolling: multi-pass rolling process, the heated billet rolled into the required shape and size. Rolling temperature and deformation of each pass need to be precisely controlled to ensure the shape and size accuracy of the steel pipe. At the same time, in the rolling process need to pay attention to maintain the surface finish of the steel.
5. Cooling: The rolled steel pipe is cooled to eliminate internal stress. The cooling process needs to control the cooling speed and temperature to avoid cracks and other defects in the steel pipe.
6. Straightening: The cooled steel pipe is straightened to eliminate bending and twisting. The straightening process needs to control the straightening temperature and pressure to ensure the straightness and precision of the steel pipe.
7. Non-destructive testing: Non-destructive testing of the steel pipe to ensure that there are no cracks, pores and other defects. Commonly used non-destructive testing methods include ultrasonic flaw detection, eddy current flaw detection and so on.
8. Quality testing: quality testing of steel pipe, including dimensional accuracy, surface quality, metallurgy and other aspects of the test. The subsequent processing can only be carried out after passing the test.
9. Packaging: the tested seamless bright precision tubes will be packaged to prevent rust and pollution. Before packing, anti-rust treatment is required, such as applying anti-rust oil.