Accu-Roll tube rolling machine started in Yantai Lubao, Chengdu and other places in the early 1990s in China, which was noisy at that time and had the momentum of replacing other diagonal rolling and continuous rolling units, but after practice test, Because of the short length of the rolled seamless pipe, the production of some specifications of 3 times the length of the pipe is limited, and the deep spiral print on the surface of the pipe when rolling thin wall pipes affects the appearance and quality of the steel pipe, so far it has only survived in China, especially in the recent past, some private enterprises have built a number of small Accu-Roll tube rolling units, and there have been no reports of foreign construction of this type of tube rolling machine. This machine is not suitable for the production of large and medium caliber seamless steel pipe. It is actually a two-high horizontal long mandrel skew mill with active guide plate.
The mill structure has the following characteristics:
The two rolls are tapered. As with the conical roll piercing machine, there are feeding Angle and rolling Angle, so that the diameter of the roll gradually increases along the rolling direction, which is conducive to reducing sliding, promoting the longitudinal extension of the metal and reducing the additional torsion deformation.
Two large diameter active guides are used.
The operation mode of limited movement mandrel is adopted.
The use of non-shoulder roll roll shape overcomes the concentration of wall reduction in the shoulder part of ASSEL, which reduces the roll life and wall equalization effect, thereby improving the wall thickness accuracy of the pipe.
CANGZHOU GALAXY STEEL PIPE CO., LTD
Email: sale@galaxy-steel.com
Wechat: LXF13931739696. Whatsapp: 008613931739696
Website: www.friend-steelpipes.com www.cz-steelpipe.com
No comments:
Post a Comment