Seamless Steel Pipe

    Reverse compression bending method: According to the heat treatment deformation law of shaft parts, reverse compression bending in the bending direction of the part to compensate the bending deformation generated after quenching can reduce the amount of straightening work. It is suitable for parts with obvious uneven section and severe deformation.     Static quenching method: The temperature of the quenching coolant must be uniform, and it is in a static state immediately after being homogenized before quenching.     Part design is uniform and symmetrical: The cross-sectional shape design of parts should be as uniform and symmetrical as possible.     Use special quenching jig for quenching: If the section of the part is symmetrical, it can be put into a special jig after the furnace is released, and then the part is quenched into the cooling liquid in the vertical direction.     Heating with embedded salt-bath furnace: The p...

    Technical requirements and development trends of steel tubes     (1) The requirements for high corrosion resistance of various corrosive media and high-temperature strength and low-temperature toughness are becoming higher and higher. As a result, the chemical composition of pipe products is constantly changing, and the smelting and processing technology is continuously improved.     (2) The pipe product size (wall thickness accuracy), shape accuracy to promote the online detection, automatic control technology continues to progress.     (3) The requirement of reducing the cost of pipe products makes the production process develop to the direction of short process and near final molding.     (4) The general trend of pipe product requirements is high quality, cheap, efficient, low consumption.     Hot rolled seamless steel tube production     Production process of automatic tube rolling unit: (cold cent...