Method for refitting collapsible elements of recoiling machine

Abstract

The invention relates to a method for refitting collapsible elements of a recoiling machine, which sequentially comprises the following steps of; 1. demounting four arched key plate components from the recoiling machine designed by Sendzimir; 2. processing counter bores on the edge of an annular mounting plate component of each arched key plate component; 3. processing a threaded hole on each counter bore, and processing the threaded hole on an annular ring component; 4. cutting the position between the annular mounting plate component of each arched key plate component and the annular ring component, cutting the position between the annular mounting plate component of the arched key plate component and the annular ring component along the internal plane of the annular plate component by a linear cutting machine; 5. fastening the annular mounting plate component with the corresponding annular ring component by screws; and 6. mounting the four fastened arched key plate components on the coiling machine of a sendzimir mill. The method for refitting collapsible elements of recoiling machine disclosed by the invention has the advantages of reducing the collapsible failure of the recoiling machine from the original once every three months to once a year.

Description

technical field [0001] The invention relates to a method for refitting expansion and contraction parts of a coiler, in particular to a method for refitting expansion and contraction parts of a coiler of a Sendzimir rolling mill. Background technique [0002] As a typical four-column rolling mill in the world, the 1625MM Sendzimir rolling mill has a dominant position in the field of rolling fine stainless steel materials. As far as the equipment itself is concerned, the design level is already mature. However, the disadvantage is that the coiler, which is the main part of the equipment, suffers from frequent reel expansion and contraction failures under the continuous action of high speed and high tension. Under the continuous action of high strength and high force, the main components that realize the expansion and contraction function of the coiler, the inner tooth copper sleeve and the arc-shaped key plate, move uninterruptedly to generate force, and because the material o...

AI Technical Summary

Problems solved by technology

However, the shortcoming is that the coiler, which is the main part of the equipment, suffers from frequent reel expansion and contraction failures under the continuous action of high speed and high tension.

Under the continuous action of high strength and high force, the main components that realize the expansion and contraction function of the coiler, the inner tooth copper sleeve and the arc-shaped key plate, move uninterruptedly to generate force, and because the material of the inner tooth copper sleeve is Copper, the material of the arc-shaped key plate is 42CrMo, and the inner-toothed copper sleeve often breaks under the tension of the arc-shaped key plate, which makes the coiler unable to expand and contract, causing the equipment to stop production

The existing method of refitting the expansion and contraction parts of the coiler is to reprocess the inner tooth copper sleeve or replace the inner tooth copper sleeve with a harder material. It takes a long time to replace the inner tooth copper sleeve each time, and because the damaged parts are precision spare parts, The processing is very difficult. Not only is there deformation during the heat treatment process, but it is also difficult to ensure the concentricity of the gear sleeve during machining, which makes the spare parts allocation cycle quite long and equipment maintenance is extremely difficult.

Images