Novel pinch roll

Abstract

The invention relates to a novel pinch roll. The novel pinch roll comprises an upper pinch roll body and a lower pinch roll body, wherein the upper pinch roll body comprises an upper pinch roll sleeve, an upper pinch roll mandrel is arranged in the upper pinch roll sleeve, the length of the main body of the upper pinch roll mandrel is greater than that of the main body of the upper pinch roll sleeve, end face baffles are arranged at the two ends of an opening of the upper pinch roll sleeve, a connecting key block is arranged on one side of each end face baffle, each connecting key block is provided with a key block fastening bolt used for fixing, baffle fastening bolts used for fixing are arranged on the end face baffles and are opposite to the connecting key blocks, shaft shoulders matched with the inner sides of the end face baffles on the two sides are arranged in the middle of the upper pinch roll mandrel, and mandrel connecting key blocks are arranged at the connecting positions of the end face baffles and the upper pinch roll mandrel; and the lower pinch roll body comprises a lower pinch roll sleeve, and a metallurgical bonding lower pinch roller mandrel is arranged in the lower pinch roll sleeve. The novel pinch roll overcomes shortcomings of existing technology and is reasonable in structure and high in abrasion resistance and toughness, and the comprehensive use performance of the pinch roll is improved.

Description

technical field [0001] The invention relates to the technical field of pinch rollers, in particular to a novel pinch roller. Background technique [0002] In the process of broadband production in steel mills, pinch rollers are needed. The main function of the pinch rollers is to correctly introduce the steel plate into the coiler; maintain the tension of the coil head and tail of the steel plate; guide the steel plate to optimize the coil shape. Pinch rollers are generally used in pairs, divided into upper pinch rollers and lower pinch rollers. The upper pinch roller is generally used continuously or only with the head and tail, and the lower pinch roller is fixed. [0003] The technical requirements for the pinch roller mainly include: 1. No damage to the surface of the steel plate, no sticky steel, no marks; 2. Minimal maintenance on the machine, no need for online grinding; 3. Impact resistance to the steel plate to prevent cracks on the surface of the pinch roller; 4. ...

AI Technical Summary

Problems solved by technology

At present, steel mills commonly use surfacing material pinch rollers. The pinch roller material: stainless steel or high alloy steel, hardness: ≥55HRC. , Steel-steel structure, the surface of the rolled steel plate has beaded patterns, the depth of the working layer is limited (5-10mm), especially in the later stage of the working layer, especially the lack of strength, prone to cracks or peeling, etc.

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