Rolling mill technique of three-roller full-floating core rod tandem rolling tube

A continuous rolling and process technology, used in metal rolling, manufacturing tools, metal rolling, etc., can solve the problems of increasing head and tail losses, and achieve the effect of saving energy and improving the yield of cold-worked metal.

Inactive Publication Date: 2009-01-07
BERIS ENG & RES CORP
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  • Abstract
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Problems solved by technology

[0003] In the traditional rolling process, due to the use of the full-floating mandrel tube rolling process on the two-roller continuous tu

Method used

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  • Rolling mill technique of three-roller full-floating core rod tandem rolling tube

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Embodiment Construction

[0020] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] as the picture shows.

[0022] The invention discloses a three-roller full-floating mandrel continuous rolling tube rolling process, which includes the processes of piercing, tube rolling, diameter reduction and the like. The function of piercing is to wear and roll the solid raw material into a tubular "capillary tube"; pipe rolling is the second process, its function is to reduce the wall thickness of the tubular "capillary tube" and extend the length at the same time, and roll it into a "capillary tube" that meets the wall thickness requirements of the finished steel pipe. "Short pipe"; diameter reduction is the third process, its function is to finish rolling into the required outer diameter steel pipe and ensure that the outer diameter accuracy of the steel pipe meets the requirements of the standard; the ...

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Abstract

The invention relates to a process of rolling a three-roll continuous rolling pipe, and belongs to the technical field of the production process of a hot rolled seamless steel pipe. The invention adopts a pipe rolling process by using a three-roll full-floating mandrel continuous rolling pipe; a diameter continuous casting round billet is used as a raw material; the heated raw material is pierced by a cone-shaped roll piercer, enters a continuous pipe rolling mill, and is rolled into an outside pierced billet; through the operation procedures of reheating, diameter reduction, etc., the high-quality small-caliber hot rolled seamless steel pipe is produced. By adopting the process of the three-roll full-floating mandrel continuous rolling pipe, the three-roll continuous rolling pipe achieves high production capacity (is twice as much as the production capacity by the traditional process), high metal yield (can be improved by 1.5 percent) and low consumption (energy resources can be saved by over 15 percent).

Description

technical field [0001] The invention relates to a rolling process of a three-roller full-floating mandrel continuous rolling tube, which belongs to the technical field of producing hot-rolled seamless steel tubes. Background technique [0002] The traditional rolling process uses continuous casting round tube blanks as raw materials. After heating to 1250-1280°C, it is pierced and rolled into capillary tubes by using a two-roll piercer with guide discs. The full-floating mandrel tube rolling process is used on the machine to roll the capillary tube into a waste tube. After the head and tail of the waste pipe need to be cut off, it is reheated and rolled into a steel pipe by a multi-stand tension reducer, and then enters the cooling bed. [0003] In the traditional rolling process, when the full-floating mandrel tube rolling process is used on the two-roller continuous tube mill, there will be different degrees of "bamboo" phenomenon at both ends of the blank tube, which wil...

Claims

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Application Information

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IPC IPC(8): B21B19/04B21B19/06B21B37/78B21B37/74
Inventor 李元德贾立虹刘群英朱燕玉赵爽饶维江
Owner BERIS ENG & RES CORP
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