Internal rolling extrusion forming device and forming method for metal cylindrical parts

Abstract

The invention discloses an internal rolling extrusion forming device and a forming method for a metal cylindrical part, and relates to the technical field of metal extrusion forming. The device includes: a main gear box for driving a workpiece to be formed to rotate; It includes a second housing, an outer die holder and an outer rolling die, the outer die holder is set on the second housing, the outer rolling die is rotatably arranged on the outer die holder, and the outer rolling die is set on the outside of the workpiece to be formed The inner rolling die assembly includes a fixed seat, a mandrel and an inner rolling die, one end of the mandrel is rotatably arranged on the fixed seat, the inner rolling die is arranged on the other end of the mandrel, and the inner rolling die is nested in the Inside the forming workpiece; the guide rail, the first shell, the second shell and the fixing seat are arranged in sequence along the length direction of the guide rail, and one end of the guide rail is fixedly connected with the fixing seat, and the second shell and the first shell can be slidably set on the rail. The device can meet the requirement of isotropy in the microstructure and mechanical properties of the metal cylinder.

Description

technical field [0001] The invention relates to the technical field of metal extrusion forming, in particular to an internal rolling extrusion forming device and a forming method for a metal cylindrical part. Background technique [0002] Metal cylindrical parts are structural parts widely used in aviation, aerospace, weapons, petroleum, nuclear power and other fields. [0003] The existing forming methods of metal cylindrical parts mainly include sheet rolling + roll bending + welding, extrusion + rolling, mandrel drawing, spinning and the like. The plate rolling + roll bending + welding forming process has the longest production process. The control of the microstructure and mechanical properties of the plate in all directions has always been a difficult problem for technicians. Coupled with the welding process of the final forming, it is more likely to lead to various There are differences in the mechanical properties of the parts. During extrusion + rolling, mandrel dr...

AI Technical Summary

Problems solved by technology

The plate rolling + roll bending + welding forming process has the longest production process, and the control of the microstructure and mechanical properties of the plate in all directions has always been a difficult problem for technicians. There are differences in the mechanical properties of the parts

Extrusion + rolling, mandrel elongation, spinning process, the workpiece to be formed mainly bears radial and axial deformation, and the circumferential deformation is small, it is difficult to meet the requirements of isotropic mechanical properties of cylindrical parts

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