Four cylinder pipe expanding machine

Expanding machine is a commonly used equipment for steel tube thermal expanding, mainly for domestic large diameter steel pipe production cannot meet the demand of market and all kinds of steel pipe specification is not complete, meet the needs of small batch more varieties of steel pipe production, can satisfy the different material steel pipe hole enlargement and various non-standard steel tube expanding needs, is currently the main production process of large diameter steel pipe, is now widely used in each big industry, power plant construction, aerospace and Marine industrial equipment manufacturing industry, for the customer in the steel pipe industry and made a great contribution to the energy construction.

The pipe expanding machine can enlarge the inner diameter of the steel pipe and expand the other end of the steel pipe, which is also called the expanding head machine.With the continuous improvement of the quality of the thermal expanding steel pipe by users, our factory has developed the automatic constant temperature system of the domestic pipe expanding machine for this equipment, which ensures the quality of the thermal expanding steel pipe products to the greatest extent.

Pipe expanding machine is applied to the production of thermal diameter of seamless steel pipe, straight seam welded pipe, coil pipe and so on.Can expand the steel pipe varieties are: carbon steel, alloy steel, stainless steel and so on.

The components of the pipe expanding machine: the base, the main cylinder, the movable push plate, the front support plate, the automatic feeding system, the feeding roller table, the mold bracket, the intermediate frequency coil, the intermediate frequency heating coil, the intermediate frequency power supply, and the electrical control system.

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)

108-109.