Rolling technology of GB/T 8162 12Cr1MoV alloy tube

When the GB/T 8162 12Cr1MoV alloy tube is rolled, the pressure roll piercer is generally not replaced by a slanting roll piercer, which can better be reaming and perforating. The pressure roller piercer for 12Cr1MoV alloy tube dehole rolling has not been replaced by the inclined roll piercer. The length of the conical piercer has the consequences of casting and the use of restraining shear deformation, thus restraining the shortcomings of the outside of the 12Cr1MoV steel tube, which can be used for perforation, especially for perforation and perforation. When the general piercer is adopted, the limit of wall thin / medium diameter ratio (T/D) is about 6%, and the rolling technology of 12Cr1MoV alloy tube with thin-walled tubes that can enter and stop a cone piercer when the T/D is adopted.

GB/T 8162 12Cr1MoV alloy tube rolling mandrel seamless tube machine is not enlarged and loosening. The number of rack is reduced from 7~9 rack to 4~5 rack, and the total power consumption of the dehole mandrel seamless tube rolling is reduced by 20% or so. In order to reduce the loss of cutting tail in the outer tube wall of the reducing mill, the tube end technology is used, and use mandrel type seamless tube rolling machine to enlarge the tube end. And the oil pressure installation is first adopted under the 12Cr1MoV steel tube machine.

At present, the development technology of GB/T 8162 12Cr1MoV alloy tube has become more mature, not only the quality of 12Cr1MoV alloy tube is guaranteed to a great extent, but also the rolling of 12Cr1MoV alloy tube is relatively simple. It is believed that the future of the 12Cr1MoV alloy tube rolling is getting better and better.