Spinning deviation-correcting method for punching-pulling steel bottle tube wall thickness

Abstract

The invention relates to a spinning deviation-correcting method for a punching-pulling steel bottle tube wall thickness, belonging to the manufacturing technique of high pressure containers. The spinning deviation-correcting method is characterized in that a steel bottle blank (1) with nonuniform tube wall thicknesses, which is thermally processed by pulling and punching, is sleeved on a core rod (2) of an internally spinning deviation-correcting distortion tool, and a spinning wheel (3) performs relative rotation spinning and axial feed on the outer surface of the steel bottle blank. Under the spinning deviation-correcting pressure of the spinning wheel (3) and the outer surface of the core rod (2), the punching-pulling steel bottle blank (1) is coldly and axially processed into a spun and deviation-corrected tube wall (5) point by point from point to line and from line to surface by utilizing metal plasticity, and in the spinning and deviation-correcting process, the wall thickness deviation of the punching-pulling steel bottle blank (1) is corrected so as to improve the wall thickness precision of the steel bottle and the quality of the surfaces of an inner circle and an outer circle.

Description

technical field [0001] The invention relates to a method for correcting the wall thickness of a punching and drawing steel cylinder by spinning and pressing, and belongs to the technical field of high-pressure vessel manufacture. Background technique [0002] At present, the known process of making a steel cylinder body from a metal billet is to heat the metal billet, put it into the die of a punching hydraulic press, and use a punch to punch an unreasonable circular sink hole in the center of the metal billet to form a punching billet. The outer surface of the hole blank is also rounded, and then immediately put the punch blank into the receiving table of the drawing machine, the ejector pin of the drawing machine is inserted into the punch blank, and the drawing mold frame and unloader The material device, on which can be placed multiple ring mold frames and roller mold frames, and the ejector rod with the punching blank is driven by the main water cylinder, so that the pu...

AI Technical Summary

Problems solved by technology

However, the wall thickness of the cylinder body processed by this process is uneven (such as a steel cylinder with a wall thickness of Φ267mm and 5.8mm, the wall thickness difference reaches 2.5mm), and the roughness of the inner and outer surfaces is poor, which directly affects the processing quality of the cylinder body.

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