Geometric model of new elongater for skew rolling tubular products

A geometric model, skew rolling technology, used in rolling mill control devices, metal rolling, metal rolling, etc.

Inactive Publication Date: 2006-07-05
BAOTOU ENG & RES CORP OF IRON & STEEL IND CHINA METALLURGY CONSTR GROUP BERIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The purpose of the present invention is to overcome the deficiencies and shortcomings of the existing cross-rolled pipe mill, and propose a geometric model of a new cross-rolled pipe extension machine

Method used

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  • Geometric model of new elongater for skew rolling tubular products
  • Geometric model of new elongater for skew rolling tubular products
  • Geometric model of new elongater for skew rolling tubular products

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Embodiment Construction

[0095] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings and examples.

[0096] First draw up a geometric model of a cross-rolled pipe extension machine: the feed angle β=8°, the axis of the roll adjusts the center point of rotation O 1 The distance to the datum plane of the rolled piece axis, that is, the movement amount x of the roll axis on the x-axis 0 =290mm, rolling angle ψ=-20°, offset y 0 =-80mm.

[0097] Other calculation conditions are the same as those of the existing cross-rolled pipe extension machine in the background technology, that is: the calculation of the deformation zone starts from the section where the wall reduction and diameter reduction begin, until the wall reduction and diameter reduction end, the calculated deformation zone length is 120mm, and the beginning of the reduction The capillary outer circle radius r=82.92mm on the cross-section where the wall and ...

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Abstract

The present invention relates to hot-rolled pipe elongation technique. Said technique can be directly used in skew-rolled pipe elongation equipment. Said invention provides a new geometrical model of pipe material elongator. It is basically characterized by that its rolls are arranged according to convergent form, namely, the cone angle Psi is less than O, in the coordinate system oxyz, the offset amount yo is not equal to O, and its feed angle beta and the offset amount yo can not be identical in size. Besides, said invention also provides four sets of equations, and utilizes them to make optimization calculation so as to obtain the invented geometrical model of skew-rolled pipe material elongator.

Description

technical field [0001] The invention relates to a hot-rolled pipe extension technology, which can be directly applied to cross-rolled pipe extension equipment. Background technique [0002] Modern common cross-rolled pipe extension machines are: [0003] 1) Diescher pipe rolling mill [0004] 2) Assel pipe rolling mill (three-roll cross-rolling extension machine) [0005] 3) ACCU ROLL pipe rolling machine [0006] 4) Three-roll skew rolling planetary pipe mill (PSW) [0007] It is inevitable that any cross-rolling process will produce metal "bulging" in the deformation zone. In order to alleviate this "bulging" and increase the rolling speed, people have made a lot of discussions over the years, but with little success. Under the development of oblique-longitudinal rolling pipe rolling mill (such as Diescher pipe rolling mill, ACCU ROLL pipe rolling mill), this type of pipe rolling mill not only has a huge mechanical structure, but also causes adjustment of the rolling m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B19/02B21B37/78
Inventor 詹尊舜
Owner BAOTOU ENG & RES CORP OF IRON & STEEL IND CHINA METALLURGY CONSTR GROUP BERIS
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