| Expander machine wide application and skills
There is a kind of oblique stretching pipe machine is installed in the bedroom, and the rolling Angle is very large.According to the construction characteristics of this mill, the axis of the rolls should be parallel to the horizontal plane, and the two rolls should be moved up or down in parallel at an interval.The roll is pressed down by axial displacement.According to this method of roll adjustment, we can not see the formation process of feed Angle. Usually, the rollers of the general inclined pipe binder should rotate along the straight line of the axis of the straight roller to form the feed Angle.Inclined expansion pipe is inclined to tie the process, if there is no feed Angle, inclined to tie the process is impossible to achieve.So the inclined expansion pipe must have a feed Angle, but the need to choose a special Angle to find it.In the process of pipe expansion, the extension change scale is very small, and the wall reduction deformation is mainly transformed into the diameter expansion deformation.General inclined pipe tying machine and inclined pipe expanding machine are not the same, its wall reduction deformation is mainly transformed into extension deformation, the surrounding deformation contrast is small, that is, the change of steel pipe diameter is small.Therefore, the key point of oblique pipe expansion machine lies in diameter expansion, which has the characteristics of very significant diameter expansion deformation.
Interchanged with thermal expansion pipe production skills, thermal expansion tube selection is a two step propulsion type cone die hole diameter expanding machine set of skills, skills of digital intermediate frequency induction heating, hydraulic skills in one machine, with its reasonable skills, lower energy consumption, low construction investment, outstanding product quality, compared to a wide range of raw materials and commodities standard adaptability, flexible and simple lower investment yield batch adaptability, replacing the steel tube of professional traditional drawing type expander skills.Because it is difficult to deal with the supply of large-caliber steel pipe in the near future, thermal expansion steel pipe has become the main commodity source to deal with the lack of large-caliber steel pipe in China, which has alleviated the serious supply situation of large-caliber steel pipe market.The cross rolling method or drawing method to expand the diameter of a kind of steel pipe finishing rolling process, in a short time to make the steel pipe thickening, can produce a special type of seamless pipe cost specification, and the cost comparison is low, high production efficiency, is the development trend of the current national rolling category
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