Centrifugal composite roller

Abstract

The invention discloses a centrifugal composite roller. The roller comprises a roller body, the thickness of a supporting layer of the roller body is larger than 5 mm and smaller than or equal to 20 mm, and the hardness of a roller shoulder portion of the roller body is larger than HSD60. The roller has the beneficial effects that the material of the roller shoulder is further changed by changingthe size of the roller shoulder, so that the hardness and the wear resistance are improved, and the roundness precision keeping capability in the life cycle of the roller is ensured; and not only canaccidental consumption caused by grinding roundness precision be reduced, but also the rolling stability and the plate shape precision of strip steel can be improved.

Description

technical field [0001] The invention relates to the field of hot continuous rolling mills, in particular to a centrifugal composite roll. Background technique [0002] The working rolls of hot continuous rolling mills are generally centrifugal composite rolls, that is, the outer layer is made of high-alloy, high-hardness wear-resistant material, which is composited with low-alloy, ductile iron with good strength and toughness. There is a bonding area between the two materials, namely Material fusion transition area. [0003] Such as Figure 5 As shown, due to the limitation of the structure of the rolling mill, the hot continuous rolling work roll has only a limited thickness of the roll body starting from the diameter D0 of the new roll, that is, the working layer. After the thickness of the working layer in this part is used to the scrap diameter D1, the roll will be scrapped and cannot be used. reuse. In order to ensure that the roll is used to the scrapped diameter, a ...

AI Technical Summary

Problems solved by technology

[0007] The control of the ovality of the finishing work rolls in the hot rolling production line, Gansu Metallurgy, No. 3, 29-31, 2018, introduced the problem of excessive ellipticity accuracy of the finishing work rolls in the hot rolling production line of Meishan Iron and Steel Co., Ltd. As a result, some rolls cannot be put into normal use and can only be put on hold for a long time, which affects the normal turnover of the rolls. In order to solve this problem, after tracking and analyzing the reasons for the out-of-tolerance precision of the ellipticity, preventive measures and control methods are proposed, mainly through the control of corrosion and wear and re-grinding the roller shoulder accuracy to ensure the roundness accuracy

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