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    • 33. 发明授权
    • Method of quenching large-diameter thin-wall metal pipe
    • 大直径薄壁金属管淬火方法
    • US4050963A
    • 1977-09-27
    • US652576
    • 1976-01-26
    • Kazuo KuniokaYutaka MiharaTakao Noguchi
    • Kazuo KuniokaYutaka MiharaTakao Noguchi
    • C21D1/18C21D9/08C21D11/00
    • C21D9/085
    • A method of quenching a large-diameter thin-walled metal pipe includes the steps of moving the metal pipe through a heating zone and passing the pipe through a cooling zone following passage of the pipe through the heating zone. The cooling zone includes a plurality of nozzles for spraying a cooling liquid onto the pipe from the nozzles, so as to quench the pipe. The process steps further include detecting the amount of strain on the outer periphery of the quenched pipe at the rear end of the cooling zone, as seen in the direction of movement of the pipe, so as to obtain a deviation of a detected value from a preset value, and adjusting the amount of cooling liquid sprayed onto the pipe from the nozzles in accordance with the amount of deviation from the preset value, so that the adjusted cooling water spray controls the deviation of pipe emerging from the cooling zone, for example, reduces the eccentricity of a circular pipe.
    • 大直径薄壁金属管淬火的方法包括以下步骤:使金属管通过加热区,并且在通过加热区之后使管通过冷却区。 冷却区包括用于从喷嘴将冷却液喷射到管上的多个喷嘴,以使管道骤冷。 处理步骤还包括检测在冷却区的后端处的淬火管的外周上的应变量,如在管的移动方向上看到的,以便获得检测值与 预设值,并根据与预设值的偏差量调整从喷嘴喷射到管道上的冷却液的量,使得调节后的冷却水喷雾控制从冷却区出来的管的偏离,例如, 减少圆管的偏心率。