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Ultralong pipe cold rolling equipment

A kind of equipment and ultra-long technology, applied in metal processing equipment, metal rolling, metal rolling, etc., can solve the problems of equipment not running normally, shaking, etc., and achieve the effect of improving the backward offset of the plug axis

Inactive Publication Date: 2010-07-14
上海华钢不锈钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These swaying is caused by the elastic deformation of the extended mandrel connected to the top under the impact of rolling force. The longer the mandrel is, the greater the deformation will be, resulting in greater swaying, and even the equipment cannot operate normally.

Method used

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  • Ultralong pipe cold rolling equipment
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Embodiment Construction

[0009] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0010] Depend on figure 1 It can be seen that the present invention includes: at least one cage 1 connected to the cold rolling mill; the cage 1 is fixedly connected to the mandrel 2; a protective cover is also added to the mandrel 2 at the middle and rear end of the mandrel 2 Tube 3.

[0011] The present invention lengthens the fuselage on the original cold rolling mill equipment, adds a plurality of cages to the fuselage, in order to limit the elastic deformation of the mandrel in the middle of the fuselage, and requires the operator to add a protective cover in the middle and rear sections in the process The tube shakes to control the deformation of the mandrel. These measures not only solve the problem of rolling super-long pipes, but also obviously improve the problem that the plug axis deviates backward when the force is applied due to t...

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Abstract

The invention relates to ultralong pipe cold rolling equipment which comprises at least one retainer connected with a cold rolling mill, wherein the retainers are fixedly connected with a core rod, and a protection sleeve is also added on the core rod at the middle rear end. The invention has the advantages that the problem of rolling ultralong pipes is solved, and the conditions of top end axial backward shift during stressing caused by the large elastic deformation of the core rod and large deviation of rolled pipe walls are also improved.

Description

technical field [0001] The invention relates to a cold rolling mill, in particular to the structure of the cold rolling mill. Background technique [0002] The general length of cold-rolled pipe is 6 meters, and it can be extended to 12 meters for special lengthening requirements, and cold-rolled pipes of nearly 18 meters can also be processed, but cold-rolled pipes exceeding 18 meters cannot be realized according to the current technology. [0003] The 16X22-29 meter super long pipe required by the feed water heater in the generator set is generally replaced by welded pipe. But at present, some high-demand designs need to use seamless pipes, and the processing length is limited. If the ultra-long steel pipes are to be rolled, the raw material pipes need to be quite long, and the body of the rolling mill for rolling ultra-long pipes needs to be lengthened. The fuselage is lengthened and there is considerable wobble when rolling the steel tube chamber. These swaying is caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B31/02B21B25/02
Inventor 王爵光
Owner 上海华钢不锈钢有限公司