Production Process of Thick Wall Seamless Steel Tube
Production Process of Thick Wall Seamless Steel Tube
The production method of thick-walled seamless steel pipe is roughly divided into oblique rolling method (Mennesman method) and extrusion method.
The oblique rolling method (Mennesman method) is to first use the inclined roll to perforate the tube, and then use the rolling mill to extend it. This method of production speed, but the machinability of the tube is higher, mainly for the production of carbon steel and low alloy steel pipe.
Extrusion law is the use of punching machine tube or ingot piercing, and then extruded into a steel pipe extruder, this method is less than the low efficiency of the application of the method, suitable for the production of high strength alloy steel pipe.
Both the skew and the extrusion method must first heat the tube or ingot, and the thick-walled seamless steel pipe produced is called a hot-rolled tube. The steel pipe produced by the hot working process can sometimes be cold worked as needed.
There are two methods of cold processing: one is cold drawing method, is the thick-walled seamless steel pipe through the extubation die drawing, the steel pipe gradually thinning, elongation; another method is cold rolling method, The method used by Stein Brothers for the hot rolling mill to be used in cold working. Thick-walled seamless steel pipe cold processing, can improve the dimensional accuracy of steel and processing finish, improve the mechanical properties of materials.
The oblique rolling method (Mennesman method) is to first use the inclined roll to perforate the tube, and then use the rolling mill to extend it. This method of production speed, but the machinability of the tube is higher, mainly for the production of carbon steel and low alloy steel pipe.
Extrusion law is the use of punching machine tube or ingot piercing, and then extruded into a steel pipe extruder, this method is less than the low efficiency of the application of the method, suitable for the production of high strength alloy steel pipe.
Both the skew and the extrusion method must first heat the tube or ingot, and the thick-walled seamless steel pipe produced is called a hot-rolled tube. The steel pipe produced by the hot working process can sometimes be cold worked as needed.
There are two methods of cold processing: one is cold drawing method, is the thick-walled seamless steel pipe through the extubation die drawing, the steel pipe gradually thinning, elongation; another method is cold rolling method, The method used by Stein Brothers for the hot rolling mill to be used in cold working. Thick-walled seamless steel pipe cold processing, can improve the dimensional accuracy of steel and processing finish, improve the mechanical properties of materials.
Abstract from Tianjin Xinyue Steel Group
评论
发表评论