A method and device for controlling radial thickening of both ends of an inner high pressure forming tee pipe

Abstract

The invention discloses a method and a device for controlling radial thickening at both ends of an internal high-pressure forming tee pipe. The 45° rounded corners are reversed at the offset, and the design of the pads allows the thickened part of the material at both ends to flow to the bulging area, reducing the thinning of the bulging area of ​​the material, and overcoming the phenomenon that the bulging area is prone to rupture during the forming process , easy to form, the design of the pad controls the uniformity and size of the wall thickness of the pipe end in the feeding area, the fiber flow direction of the pipe material will not be damaged, and the tissue performance of the pipe will not be damaged; the forming efficiency and The material utilization rate reduces the subsequent mechanical thinning process, reduces the processing cost and production investment.

Description

technical field [0001] The invention relates to the technical field of internal high pressure forming of pipe materials, in particular to a method and a device for controlling radial thickening at both ends of an internal high pressure forming tee pipe. Background technique [0002] The tube internal high pressure forming process is an advanced lightweight forming method that uses axial feeding and internal pressure to make the tube blank fit on the surface of the cavity. It is widely used in aviation pipe fittings, automobile pipe fittings, air conditioning pipe fittings and other industries. The forming process of internal high pressure is to close the upper and lower molds on the hydraulic press, fill the pipe cavity with water, and the two punches separated by 180° are fed to the middle at the same time under the thrust of the hydraulic cylinder, and return to the original position after the pressure maintaining is completed. Position, then open the clamping mold, and t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method and device for controlling the radial thickening of both ends of the high-pressure formed tee pipe. By placing a certain length of lining block in the tube blank feeding area, the wall thickness of the workpiece is relatively uniform and the minimum wall thickness is controlled. The thickness is within a certain range, and at the same time, because the material supplements the bulging area, it solves the problem that the bulging area is prone to cracking during the forming process

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