Method for grinding and processing Sendzimer roller

Abstract

The invention discloses a method of abrasive machining of sendzimir rollers and uses composite grinding wheels with the specification ranges of 1-Phi 750 multiplied by 75 multiplied by Phi 305A / F20 to 60 M to H V40m / s; wherein, 1-Phi 750 multiplied by 75 multiplied by Phi 305 refers to the size, A / F refers to the composite material of brown corundum and green silicon carbide, 24 to 60 refers to the particle size range, M to H refers to the hardness range, V is a ceramic cement, and 40m / s means the maximum speed of revolution allowed by the grinding wheels; and in the abrasive machining, the speed of revolution of the grinding wheels is 25 to 40m per second, the axial feeding speed of the grinding wheels is 0.8 to 2m per minute, and the speed of revolution of rollers is 30 to 70r per minute. The method of the invention is high in abrasive machining efficiency and low in labor intensity of operators.

Description

technical field [0001] The invention relates to a method for processing rolls, in particular to a method for grinding and processing Sendzimir rolls. Background technique [0002] The basic performance parameters of Sendzimir rolls are: the hardness of the roll body is HRC50~70, 60~90HSD; the roughness of the roll body is Ra1.6μm~Ra0.2μm; the allowance of the roll body is 0.5~2mm; the slenderness ratio of the roll is 10~30 ; Roll weight 30 ~ 200kg. Due to the unique chemical elements vanadium (V) and cobalt (Co) contained in the material composition of Sendzimir rolls, the rolls are very hard and very difficult to process. [0003] At present, the grinding wheel commonly used for grinding Sendzimir rolls is a single brown corundum grinding wheel, and its specification is: 1-φ750×75×φ305A 46K V 40m / s. Among them, 1-φ750×75×φ305 indicates size, A indicates brown corundum, 46 indicates particle size, K indicates hardness, V indicates vitrified bond, and 40m / s is the maximum ...

AI Technical Summary

Problems solved by technology

The working speed of the grinding wheel is usually 15m / s~20m / s. If the speed of the grinding wheel is increased, the grinding wheel will vibrate and burn the roller body, and the slower speed of the grinding wheel will make the linear speed of the grinding wheel smaller, thus The grinding ability of the grinding wheel is low, resulting in low grinding efficiency of the grinding wheel, and its grinding volume per unit time is usually below 1.0×103mm3 / min

In addition, this kind of grinding wheel is also consumed quickly, and the grinding wheel needs to be trimmed frequently, which increases the labor intensity of the operator.

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