Prevention of deformation of steel tube by heat treatment

    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 plug-in salt-bath furnace is used for heating. The parts are heated quickly on one side, which is prone to bending deformation, while the embedded salt-bath furnace has a more uniform temperature and energy saving.

    Straight hanging horizontally: For long parts storage before and after quenching, do not bend the parts due to their own weight, it is best to use a straight hanging frame.

    Stress relief before quenching: for important parts that are easily deformed. Annealing or normalizing before quenching to refine grains and make the structure uniform, reduce internal stress.

    http://www.xysteelpipe.com/info/Prevention-of-deformation-of-steel-tube-by-heat-treatment-1675-1.htm

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