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Rolling machine and tandem rolling facility equipped with same

A rolling mill and rolling material technology, applied in the field of tandem rolling equipment, can solve problems such as constraints, and achieve the effect of improving yield and productivity

Active Publication Date: 2014-12-03
PRIMETALS TECHNOLOGIES JAPAN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there may be restrictions on rolling operations
[0013] In addition, by moving the roll shoulder of the work roll according to the width of the rolled material, it is possible to reduce the so-called edge collapse caused by the sharp decrease in the thickness of the rolled material at the end of the rolled material. The thrust of the work roll acts on the thrust bearing for the work roll and the movement of the work roll cannot be performed

Method used

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  • Rolling machine and tandem rolling facility equipped with same
  • Rolling machine and tandem rolling facility equipped with same
  • Rolling machine and tandem rolling facility equipped with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] like figure 1 and figure 2 As shown, the 6-stage rolling mill 11 has a pair of left and right (drive side, operation side) housings 21a, 21b. In the casings 21a and 21b, the upper and lower pair of work rolls 22, the intermediate roll 23, and the reinforcement roll 24 are rotatably supported, and the upper and lower pair of work rolls 22 are respectively contacted and supported by the upper and lower pair of intermediate rolls 23. The pair of intermediate rolls 23 are respectively supported in contact with the pair of upper and lower reinforcement rolls 24 . And the rolling material 1 which is a hard material conveyed between the shells 21a, 21b passes between the work rolls 22a, 22b, and is rolled.

[0053]In addition, the reinforcement roll 24 on the upper side is rotatably supported by bearing boxes 25a, 25b, and the bearing boxes 25a, 25b are supported by housings 21a, 21b via pass line adjustment devices 26a, 26b. Therefore, the pass line of the rolling materia...

Embodiment 2

[0080] The aforementioned pair of upper and lower work rolls 2 are formed of a material with a high longitudinal modulus of elasticity. As a material with such a high longitudinal elastic modulus, tungsten carbide (longitudinal elastic modulus; 53000kg / mm 2 ) and other superhard alloys, ceramics (longitudinal elastic coefficient; 31000kg / mm 2 )wait. It should be noted that as the material of conventional extremely small diameter work rolls, special forged steel or high-speed steel (longitudinal elastic coefficient; 21000kg / mm 2 )wait. Also, the work roll 2 may be a composite roll whose surface layer portion is formed of the above-mentioned high longitudinal elastic modulus material and whose inner layer portion is formed of the above-mentioned existing material.

[0081] Therefore, even if the work roll diameter of the work roll 22 is set to a smaller diameter than the minimum diameter, by setting the work roll 22 to have a vertical height approximately 1.5 to 2.5 times tha...

Embodiment 3

[0086] like Figure 8 to Figure 10 As shown, a pair of upper and lower work rolls 62 are rotatably supported on the six-stage rolling mill 13 . The upper and lower pair of work rolls 62 have: a cylindrical roll main body portion 62a; a tapered tapered portion 62b formed at one end of the roll main body portion 62a; a roll neck portion 62c formed at the other end of the roll main body portion 62a; The roll neck portion 62d formed at the tip of the tapered portion 62b, and the roll shoulder portion 62e serving as the starting point of the tapered portion 62b (starting position of the tapered surface). That is, the pair of upper and lower intermediate rolls 62 each have roll shoulders 62e at the ends of the upper and lower roll main body portions 62a that are point-symmetrical to the center of the strip width of the rolled material 1 .

[0087] In addition, the roll necks 62c, 62d of the work roll 62 are rotatably supported by the above-mentioned bearings 31a, 31b, 31c, 31d, and...

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PUM

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Abstract

Provided are a rolling machine which has a work roll adequately reduced in diameter to effectively roll a hard rolled material and a tandem rolling facility equipped with the same. To this end, the rolling machine (11) includes a pair of upper and lower work rolls (22); a pair of upper and lower intermediate rolls (23) which support the respective work rolls (22) from above and below and are supported to be movable along the roll axis, the intermediate rolls (23) having a tapered portion (23b) at the end portions of the upper and lower rolls, the end portions being symmetric about a point on the center of plate width of the rolled material (1); a pair of upper and lower reinforcing rolls (24) for supporting the respective intermediate rolls (23) from above and below; a pair of upper and lower support rolls (41a to 41d) for supporting the respective work rolls (22) from the inlet and outlet sides; and two pairs of upper and lower separate bearing shafts (42a to 42d, 43a to 42d) for supporting the respective support rolls (41a to 41d) from the inlet and outlet sides, wherein the work roll has a diameter range of (the work roll diameter) / (the maximum plate width of the rolled material) being greater than 0.1 and equal to or less than 0.16.

Description

technical field [0001] The present invention relates to a rolling mill capable of appropriately reducing the diameter of work rolls and efficiently rolling hard materials, and tandem rolling equipment including the rolling mill. Background technique [0002] Conventionally, especially in the rolling of hard materials, the smaller the diameter of the work roll, the thinner the rolled material can be. Therefore, the work roll with a small diameter has been used. However, when the diameter of the work roll decreases, the bending rigidity of the roll itself decreases, so that the horizontal bending of the work roll becomes a problem. Therefore, there is provided a rolling mill in which horizontal bending of work rolls is suppressed by providing backup rolls that support the work rolls from the horizontal direction. [0003] In addition, in the above-mentioned rolling mill equipped with the function of suppressing horizontal bending of the work roll, the range of the diameter of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B13/14B21B13/02B21B27/00
CPCB21B27/021B21B2261/06B21B13/147
Inventor 乘鞍隆
Owner PRIMETALS TECHNOLOGIES JAPAN LTD