Method for controlling tail wiggling quantity of inclined rolling perforator

Abstract

The invention discloses a method for controlling a tail wiggling quantity of an inclined rolling perforator. The method comprises the steps of: 1) measuring parameters of the inclined rolling perforator and a blank; 2) judging the deviation of the blank in the rolling process; 3) calculating a deviation quantity delta d of the tail part of the blank in one place in the rolling process; 4) correcting the tail wiggling quantity of the blank to obtain a corrected tail wiggling quantity dx; and 5) controlling of the tail wiggling quantity of the blank: control devices for preventing the blank from swinging are mounted on the left and right sides of the blank in an inlet of the inclined rolling perforator far from the center line dx of the blank. Aiming at the tail wigging problem of the pipe blank caused by a complex deformation area with an asymmetric shape in a traditional inclined rolling perforating process, the method obtains the tail wigging quantity of the pipe blank through theoretical analysis; and according to the magnitude of the wigging quantity, multiple control devices are mounted in the inlet of the inclined rolling perforator to achieve the purpose of controlling the tail wiggling of the pipe blank, so that the quality of perforated pipe is improved, and the generation of unnecessary accidents in actual production is prevented.

Description

technical field [0001] The invention belongs to the field of seamless steel pipe production in the metallurgical industry, and relates to a method for controlling the amount of tail swing of a pipe blank in the process of skew rolling and piercing. Background technique [0002] At present, in the cross-rolling piercing process, because the piercing deformation zone has a complex spatial geometry, it is surrounded by deformation tools such as rolls, guide plates, and plugs. The cross-section is from the entrance end where the tube billet is in contact with the roll to the exit end away from the roll, gradually transitioning from a solid circle to a hollow ring, and the longitudinal section is formed by inserting an arc-shaped top between two cones with small bottoms connected. During the spiral advancement of the tube billet along the rolling line, it will deviate from the rolling line (the center line surrounded by the spiral advance of the tube billet) and approach the roll...

AI Technical Summary

Problems solved by technology

This kind of swing will further exacerbate the deviation of the tube billet from the rolling line, resulting in quality defects such as excessive ovality and uneven wall thickness of the capillary tube, and safety accidents may occur when the swing range is too large

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