HNGK ERW Pipe Mill

Our company’s ERW pipe mill uses the world’s most advanced molding machine. On the basis of the rough molding machine does not need to change the roller, it also developed a precision forming machine that does not need to change the roller, so that the entire molding machine is not Need to change roll. In this way, the auxiliary time for roll change is reduced, the production efficiency is improved, and the production of orders of multiple specifications and small batches becomes possible.

Our company’s ERW pipe mill sizing frame uses a roll quick change technology. When the roll is changed, the roll change mechanism pulls out the roll shaft from the side as a whole and feeds the backup roll set with the roll into the frame. In this way, the auxiliary time for roll change is reduced, the production efficiency is improved, and the production of orders of multiple specifications and small batches becomes possible.

In the prior art, the adjustment of the rolls when changing specifications required highly skilled adjustment workers. Due to uncontrollable human factors, the scrap rate at the time of unit lead is relatively high, and the adjustment time is relatively long. All these seriously affect the unit yield and production efficiency. Our company’s ERW pipe mill has established a comprehensive database. When changing specifications, only the diameter, wall thickness and other parameters need to be input. The computer will call the database to adjust the position data, and the computer will drive the roller to reach the correct position. After the position is automatically stopped, the direct tape can be produced, which reduces the adjustment time and adjustment errors, and reduces the scrap rate when leading. This adjustment technology, combined with the molding machine without the replacement of the roll and the quick-change roll sizing machine, the time for the unit to change specifications can reach within 2-3 hours, and it is in the leading position in the world.

Our company’s ERW pipe mill uses off-line decoiling and unwinding technology to use the off-line decoiling station to unwind the next coil while the line is in normal operation. Once the steel coils on the production line are used up, the steel coils immediately after the end of the production line are loaded into the uncoiler, the pinch rolls are closed, the steel strips are sent to the primary leveling machine, and they enter the shear butt welding machine for butt welding. . This can save a lot of time for unwinding and unwinding, and makes the steel strip in the looper sufficient. It is not necessary to stop the discontinuity due to the gradual reduction of the steel strip in the looper, thereby reducing the generation of waste pipe. And after applying this technology, it also takes sufficient time to deal with the remaining weld height after the butt welding of the steel strip. If the residual height of the weld is not to be dealt with, the annealing equipment will have to be lifted when passing the intermediate frequency annealing equipment. Lifting up will cause a defective pipe of about 12 meters. The use of this technology can greatly improve the unit’s yield.

Our company’s ERW pipe mill stocking area uses semi-automatic shear butt welding machine and automatic unattended looper, to achieve the unit allocation area requires only two workers to operate, reducing labor costs.

Our company’s ERW pipe mill adopts advanced NQT weld heat treatment technology, first intermediate frequency heating of the weld, then quenching, followed by reheating the weld again, and then through the length of the air-cooling section to the weld annealing. This weld heat treatment process can ensure that the test indicators of the weld meet the standards required by the natural gas transmission pipeline.

Our company’s ERW pipe mill adopts an advanced hydraulic pressure tester. The hydraulic press adopts a large gap seal, the pressurizing cylinder completes the pressurization at one pressurization, and the pressurized water filling tank fills the water quickly, improving the safety measures. A comprehensive monitoring system ensures safe and fast operation. Fully automatic working mode.

Our company’s ERW pipe mill adopts advanced flat head chamfering machine, and flat head chamfering machine adopts patented fixture to ensure that the blunt edge after chamfering is uniform and consistent with GB/T9711 standard. Three cutters, one flat head, one chamfer, and one inner burr are removed on the cutterhead to ensure that the pipe end faces are clean

Our company’s ERW pipe mill uses advanced technology for monitoring the drive power of the rolling mill and configures dynamic analysis software for rack drive power distribution. It integrates the roll position and power distribution of the rack and dynamically displays the rack load., Provide guidance for precise adjustment and reduce equipment damage caused by accidental overload of the rolling mill.

Our company’s ERW pipe mill took full consideration of environmental factors and adopted many effective measures, including noise reduction materials, short-distance transfer racks and other measures to ensure that the unit’s noise is very low, in line with relevant national standards.

Our company’s ERW pipe mill uses steel pipe numbering and identification systems to make all steel pipes in the entire production line identifiable and manageable. When each shift team gets off work, a production status table is automatically generated, detailing how many steel pipes were produced in this shift, how many roots of finished products, how many roots of scrap, and which wastes were generated in which process. In this way, the manager can clearly understand the condition of the unit and the production status, and can solve the problem in a targeted manner according to the process of waste production.