A method for on-line repair of the slip ring of the sliding shoe mill

Abstract

The invention discloses an on-line repairing method for a slipper grinding machine slip ring. The on-line repairing method includes the following steps: a slipper bearing civil work platform serves as a basic welding operation platform; a slipper grinding machine is slowly turned, a dial indicator is used for measuring, and deformation values are found out to be marked; and a grinding device is installed, aligned, according to the measured marks in the step, a highest point in a deformation protruded area starts to be grinded, then polished after coarse grinding, half-accurate grinding and accurate grinding so that the roughness of the slip ring is up to the standard request, and a slipper read pad is scraped. By utilization of the on-line repairing method, the repairing effect is good, the slip ring does not need to be returned to a manufacturing factory, a deformed slip ring end grinding tube body is replaced, and then the slip ring is placed on a special machine tool for grinding treatment, the treatment time is greatly shortened, repeated transportation is avoided, the production cost is greatly reduced and meanwhile the production efficiency is improved.

Description

technical field [0001] The invention relates to a maintenance method for a sliding shoe mill, in particular to an online repair method for a slip ring of the sliding shoe mill. Background technique [0002] The sliding shoe mill is mainly used in cement production enterprises for the grinding of cement clinker. At present, after a long-term use of the sliding shoe mill, it is often deformed due to cracking of the web of the grinding slip ring. Since the slip ring of the sliding shoe mill is welded on the grinding cylinder, the welding stress is eliminated by heat treatment, and it is used after grinding on a special machine tool. For example, the width of the slip ring of the φ4.2×13m sliding shoe mill is at least 600mm; The thickness of the slip ring is about 50mm. Once the slip ring is deformed, the traditional maintenance method is: for the deformation (radial runout value detected on site) ≤ 2mm, use welding support adjustment or manual grinding to repair, the effect is...

AI Technical Summary

Problems solved by technology

At present, after long-term use of the sliding shoe mill, it is often deformed due to cracking of the web of the grinding slip ring.

Since the slip ring of the sliding shoe mill is welded on the grinding cylinder, the welding stress is eliminated by heat treatment, and it is used after grinding on a special machine tool. For example, the width of the slip ring of the φ4.2×13m sliding shoe mill is at least 600mm; The thickness is about 50mm. Once the slip ring is deformed, the traditional maintenance method is: for the deformation (radial runout value detected on site) ≤ 2mm, use welding support adjustment or manual grinding to repair, the effect is not ideal, generally It is only to maintain the operation; for the deformation (on-site detection radial runout value) > 2mm, it is generally returned to the manufacturer for repair treatment. The production cost has been greatly increased, and at the same time, it has caused a lot of waste of manpower and material resources, and even affected market operations.