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Skills of medium frequency tube expander  

There is a diagonal pipe expanding machine is located in the bedroom, and the rolling Angle is very large.  According to the construction characteristics of the mill, the axis and horizontal plane of the rolls shall be parallel, with the two rolls moving up or down in parallel at an interval.  The roll is pressed down by axial displacement.  In accordance with this method of roll adjustment, we can not see the formation process of the feed Angle. Usually, the rolls of the general diagonal lapping machine should be rotated along the straight line of the roll axis to form the feed Angle.  The diagonal piping expansion is the diagonal piping process, if there is no feed Angle, the diagonal piping process is impossible to achieve.  Therefore, there must be a feeding Angle for diagonal pipe expansion, but only when a special Angle is selected can it be found.  In the process of pipe expanding, the extension change scale is very small, and the wall reducing deformation is first transformed into the expanding deformation.  The general diagonal lashing machine is not the same as the diagonal lashing expanding machine. Its wall reduction deformation is first transformed into extension deformation, and the surrounding deformation is small, that is, the change of the diameter of the steel pipe is small.  Therefore, the main point of the diagonal tie pipe expanding machine is the 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, simple and low-input production batch adaptability, instead of the traditional steel pipe occupation drawing type expanding skills.  As it is difficult to deal with the supply of large-diameter steel pipe in the near future, the thermal expansion of steel pipe has become the main commodity source to deal with the lack of large-diameter steel pipe in China, which alleviates the serious supply situation of large-diameter steel pipe shopping malls.  With the cross rolling or drawing method to expand the diameter of a steel pipe finishing rolling process, in a relatively short time to make the steel pipe thickening, can produce a special type of seamless pipe cost standard, and low cost comparison, high production efficiency, is the current national development trend of pipe rolling category  

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