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Can Seamless Steel Pipes Be Used If They Were Bent Or Deformed?
May 27, 2021
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The seamless steel pipe is an important type of steel pipe in production and life. It belongs to a kind of important steel pipe, which is relatively strong and durable. During the use process, the seamless steel pipe will also be bent and deformed. Even if the seamless steel pipe will also be bent and deformed, it can be corrected and still be used. The bending angle of seamless steel pipes can also be controlled, which should be done from the following aspects:
Seamless steel pipes
Controlling the bending degree of seamless steel pipe when quenching can be carried out from the following aspects:
(1) The step-by-step cooling process of first external spray and then internal spray is adopted. Because the water in the seamless steel pipe flows from one end of the seamless steel pipe to the other end. The cooling rate of the seamless steel pipe is different at both ends, which leads to the bending of the seamless steel pipe. Therefore, the advanced external water spray cooling can be used to make the seamless steel pipe surface layer of the first organizational transformation, and then the method of internal water spray cooling can be used to avoid the bending distortion of seamless steel pipes.
(2) Reduce the length of the suspension end of seamless steel pipes on the rotating wheels. Through reasonable rotation wheel layout and length and the control of seamless steel pipes, the suspension output of seamless steel pipes’ ends can be controlled within 600 mm, which can effectively reduce the centrifugal force during quenching and reduce the bending degree of seamless steel pipes’ ends.
(3) Reasonable control of rotating wheel speeds.
(4) Control water quenching rotation wheel center. The center deviation of rotating wheel has a great influence on the bending of seamless steel pipes during quenching. After the relevant research, the center range of the rotating wheel should be controlled within 0 - 5 mm.
(5) Control the amount and uniformity of internal and external water spraying. When the outer surface laminar cooling and inner axial injection are used for quenching and cooling of the oil well pipes, the size and uniformity of the outer water jet, the size of the inner water jet and the ratio of the inner nozzle are also important factors affecting the bending of seamless steel pipes during the water quenching.
The above points are the main methods of the common control of the bending degree of seamless steel pipes. After the bending and deformation of your seamless steel pipes are corrected, they can be used directly.
Seamless steel pipes
Controlling the bending degree of seamless steel pipe when quenching can be carried out from the following aspects:
(1) The step-by-step cooling process of first external spray and then internal spray is adopted. Because the water in the seamless steel pipe flows from one end of the seamless steel pipe to the other end. The cooling rate of the seamless steel pipe is different at both ends, which leads to the bending of the seamless steel pipe. Therefore, the advanced external water spray cooling can be used to make the seamless steel pipe surface layer of the first organizational transformation, and then the method of internal water spray cooling can be used to avoid the bending distortion of seamless steel pipes.
(2) Reduce the length of the suspension end of seamless steel pipes on the rotating wheels. Through reasonable rotation wheel layout and length and the control of seamless steel pipes, the suspension output of seamless steel pipes’ ends can be controlled within 600 mm, which can effectively reduce the centrifugal force during quenching and reduce the bending degree of seamless steel pipes’ ends.
(3) Reasonable control of rotating wheel speeds.
(4) Control water quenching rotation wheel center. The center deviation of rotating wheel has a great influence on the bending of seamless steel pipes during quenching. After the relevant research, the center range of the rotating wheel should be controlled within 0 - 5 mm.
(5) Control the amount and uniformity of internal and external water spraying. When the outer surface laminar cooling and inner axial injection are used for quenching and cooling of the oil well pipes, the size and uniformity of the outer water jet, the size of the inner water jet and the ratio of the inner nozzle are also important factors affecting the bending of seamless steel pipes during the water quenching.
The above points are the main methods of the common control of the bending degree of seamless steel pipes. After the bending and deformation of your seamless steel pipes are corrected, they can be used directly.
