Manufacturing method of the roll main body of a caliber roll

Details Manufacturing method of the roll main body of a caliber roll Manufacturing method of the roll main body of a caliber roll

1993-08-06

1994-11-01

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Roller making

29447, 492 34, B23P 1102

Patent

active

053597737

ABSTRACT:
A caliber roll for rolling consisting of a roll main body having a caliber on the outer circumference and provided with a shaft hole penetrating in the axial direction, and a roll shaft inserted into the shaft hole of the roll main body, in which a compressive stress in the widthwise direction of the roll main body is applied to the bottom of the caliber. This compressive stress is applied by forming either the inner circumference of the roll main body or the circumference of the roll shaft in a taper, and shrinkage-fitting or cold-fitting the roll main body and the roll shaft, or by pressing the both end faces in the widthwise direction of the roll main body by means of a pressing jig fixed to the roll shaft. In addition, a recess gap is provided in either one or both of the inner circumference in the middle of the widthwise direction of the roll main body and the corresponding circumference of the roll shaft. The roll main body is composed of an iron-based alloy including, by weight, C: 0.75 to 1.75%, Si: 3.0% or less Mn: 2.0% or less, P: 0.30% or less, S: 0.030% or less, Cr: 5.0 to 13.00%, Mo: 0.80 to 5.0%, and V: 0.1 to 0.5%, in which the entire hardness is adjusted to H.sub.R C 52 to 56, and the metal flow is in the axial direction.

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patent: 4817410 (1989-04-01), Yatsuzuka et al.
patent: 4819471 (1989-04-01), Cook

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