Variable diameter and variable wall steel pipe rolling mill

A rolling mill and steel pipe technology, applied in metal rolling and other directions, can solve the problems of high cost, low production efficiency, waste of energy, etc.

Inactive Publication Date: 2004-11-10
王剑波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The steel pipes with a diameter of less than 40 cm currently produced generally require cold drawing machines to go through multiple heading and annealing processes, frequent mold replacement, high cost, and low production efficiency; now there are a large number of waste steel pipes in the industrial field that cannot be reused and are often used as waste. Iron treat...

Method used

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  • Variable diameter and variable wall steel pipe rolling mill
  • Variable diameter and variable wall steel pipe rolling mill
  • Variable diameter and variable wall steel pipe rolling mill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: as attached figure 1 As shown, the steel pipe variable diameter and wall rolling mill includes a base 1, a feeding device 3 for pushing the steel pipe raw material 22 forward, and a heating device 4 for heating the steel pipe raw material 22 is an intermediate frequency induction heating device, and the heated steel pipe raw material The rolling device 5 for rolling, the straightening device 6 for straightening the rolled steel pipe; the power device for providing power to the feeding device 3, the rolling device 5, and the straightening device 6; The rolling device 5 for rolling steel pipe raw materials includes three evenly distributed rolls 5a, and the rolls 5a are installed with a certain slope with an advancing angle; the rolling device 5 for rolling the heated steel pipe raw materials is also A roll adjustment device 5b for controlling the diameter of the rolled steel pipe is provided; the detachable mandrel 21 that goes deep into the rolling area of...

Embodiment 2

[0018] Embodiment 2: as attached figure 2 , attached image 3 , attached Figure 4 As shown, the structure of the steel tube variable-diameter variable-wall rolling mill is basically the same as that of Embodiment 1, the difference being that the power used is different. The power unit of power comprises the power unit that provides power for feeding device 3, the power unit that provides power for rolling device 5 and straightening device 6; The power unit that provides power for feeding device 3 includes electric motor 2a, driven gearbox 2b, the reducer 2c driven by the gearbox 2b, and the feed power distribution bracket 2d that distributes the power transmitted by the reducer 2c. The feed power distribution bracket 2d is provided with a center that can pass through the steel pipe raw material and The driving gear 2d1 driven by the speed reducer 2c and the driven gear 2d2 corresponding to the rollers that are evenly distributed around the driving gear 2d1 and meshed with ...

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PUM

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Abstract

The invention discloses a steel pipe variable -aperture variable-wall roller, including base, feeding device, heating device, rolling device, and straightening device; power device; the rolling device includes at least three uniformly distributed rollers; after pushed by the feeding device, heated by the heating device, and rolled by the rolling device and straightened by the straightening device, whether the steel pipe is steel pipe with seam, waste steel pipe or finished steel pipe, all of them can be processed from blank steel pipes into seamless steel pipes according with use standard. By heating and roller inclined cutting thermal rolling, it effectively eliminates metal fatigue, recovers gold-phase structure, improves outside fineness, has obvious uniform wall effect, especially able to primary form small diameter very-thick wall steel pipe.

Description

technical field [0001] The invention relates to a steel rolling equipment, in particular to an equipment for rolling steel pipes. Background technique [0002] The steel pipes with a diameter of less than 40 cm currently produced generally require cold drawing machines to go through multiple heading and annealing processes, frequent mold replacement, high cost, and low production efficiency; now there are a large number of waste steel pipes in the industrial field that cannot be reused and are often used as waste. Iron treatment greatly wastes energy; seamed steel pipes are widely used in various fields, and there is no equipment to process them into seamless steel pipes; changing the wall thickness or diameter of finished steel pipes is still a common problem in the rolling field. Big problem, especially the technical problem of one-time forming of small-diameter and extra-thick-walled steel pipes. Contents of the inve...

Claims

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Application Information

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IPC IPC(8): B21B19/06
Inventor 王剑波
Owner 王剑波
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