interchanged

Pipe expanding machine is also called thermal expanding machine. As the name implies, it is to heat expand small-caliber steel pipe billet into large-caliber steel pipe. During pipe expanding, the hydraulic pipe expanding machine first flattens the steel pipe flared end groove, and then places the steel pipe in the fixture hole of the corresponding pipe diameter.

Working process of medium frequency pipe expander: when the mold is opening, the plastic parts wrap the mold core under the action of shrinkage force and move downward with the moving mold. When the line reaches a certain distance, the pull plate fixed on the fixed template pulls the release plate to make the plastic parts come out from the mold core and realize automatic demoulding of the products.Mold closing, under the joint action of guide groove, guide block, guide sleeve and guide pillar, the accuracy of mold closing and the uniformity of product wall thickness are guaranteed, so as to make products qualified.Using medium frequency induction heating technology while increasing the difficulty of mold manufacturing and complexity, but under the condition of mass production, reduce the generation of waste, shorten the molding cycle, improve the quality of the pipes, at the same time reduce the hydraulic equipment interchanged frequent maintenance and repair, has the function of automatic constant temperature to prevent too high temperature, the wall of fracture or damage)

Drawing type pipe expanding machine

Thermal expansion and drawing type pipe expander is made of steel tubes with strong shrinkage. Seamless steel tubes are one kind of thermal expansion tubes.A type of expanding process in which the diameter of the pipe is enlarged by medium frequency induction at high temperature in a shorter time.

Drawing type pipe expander itself is a non-standard product, can be made according to customer requirements of special models of seamless pipe, and the cost of labor and raw material pipe billet are relatively low, high production efficiency, is the current domestic pipe expander hydraulic field development trend.The drawing type tube expanding machine integrates hydraulic technology and medium frequency induction heating technology.

In the production of seamless steel pipe expanding into large diameter pipe, because the production capacity of medium frequency pipe expanding machine can not process too large diameter pipe, we need to process small diameter pipe first and then use thermal expansion method to process the produced seamless steel pipe.

2012-2013.