In the cooling process of the stainless seamless steel pipe, the temperature unevenness is mainly caused by factors such as heat conduction, which mainly occurs at the head and tail of the tube. This unevenness can be improved by using the strip method. Due to the particularity of the movement of the tube body in the variable angle roller table, the phenomenon of uneven temperature of the spiral in the pipe body is prone to occur during the cooling process.
During the cooling of the slats, the cooling marks correspond to the basic shape of the slats, in the case of a uniform distribution of the coolant in the cooler, uneven cooling occurs mainly on the sides of the thin product as well as at the head and tail, which are mainly Due to thermal conductivity and other factors. It is usually possible to control the opening and closing time of the main valve in the direction of the pass line, and improve the uneven temperature of the head and tail through the fine tracking of the rolling stock through a reasonable cooling strategy; the shielding device along the width direction can also improve the uneven temperature of the edge. uniform temperature.
In addition, the inclination angle of the conveying roller will not directly affect the uniform cooling of the pipe body. The change of the inclination angle is an important factor affecting the spiral movement of the stainless seamless steel pipe, which will affect the passage of the pipe body through the cooling zone. Time and rotation angle, under the premise of the cooling process and the requirement of the stable spiral advance of the steel pipe, the inclination angle of the conveying roller table can be appropriately selected as a fixed value, so that the system can easily control the inclination of the conveying roller table.