Rail beam type thermal centering machine

Abstract

The invention provides a rail beam type thermal centering machine, and relates to the field of seamless steel pipes. The rail beam type thermal centering machine comprises a frame, and a stabilizing device, a support bracket and a centering device mounted in the frame; the frame comprises a rail beam horizontally arranged, and two support pieces vertically arranged; two ends of the rail beam are respectively supported on the two support pieces; the rail beam is positioned above a centering center line, and is parallel to the centering center line; the stabilizing device and the centering device are arranged along the centering center line, and are both mounted on the rail beam; and the support bracket is correspondingly arranged below the stabilizing device, and is lower than the position of the centering center line. The rail beam type thermal centering machine further comprises a distance adjusting device capable of adjusting the distance between the support bracket and the rail beam. The rail beam type thermal centering machine can selectively center pipe blanks to reduce influence on the production beat.

Description

technical field [0001] The invention relates to the field of seamless steel pipes, relates to additional process equipment before piercing hot pipe blanks, and in particular to a rail beam type thermal centering machine used on seamless pipe rolling lines. Background technique [0002] In the process of rolling seamless steel pipes, it is sometimes necessary to perform a centering process on the hot tube blank before piercing. The centering process is mainly to reduce capillary defects and improve product quality, including centering at the head end and tail end of the tube blank. Among them, the centering of the head of the heat pipe blank, so that the nose of the plug is correctly aligned with the axis of the tube blank when piercing, can reduce the uneven wall thickness of the front end of the capillary tube and improve the biting conditions of the perforation; the tail of the heat pipe blank is fixed The heart can eliminate the "iron ear" (ring or irregular flaky steel s...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing thermal centering machines are all specially set up an area, set certain auxiliary steps, and are connected in series on the production line. During the rolling process of seamless steel pipes, whether it is necessary to center the tube blank All have to go through relevant auxiliary steps (auxiliary machines), which affect the production rhythm and occupy the production cycle, which in turn causes the temperature drop of the tube blank to a certain extent, which is not conducive to piercing

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