Composite roller

Abstract

The invention discloses a composite roller and a method for manufacturing an insert of the composite roller. The composite roller can resist large torque and is convenient to mount, detach and maintain. The roller comprises a core roller with an N-side cross section, and a roller ring consisting of N inserts, wherein the N inserts are arranged on N mounting surfaces of the core roller in a one-to-one correspondence mode; the bottom surface of each insert is contacted with a corresponding mounting surface; two ends of each insert are provided with insert legs; two ends of the mounting surface corresponding to each insert are provided with insert grooves matched with the insert legs; and the insert legs are inserted into the insert grooves and are connected with the core roller through bolts. In addition, the bottom surfaces of the inserts and the mounting surfaces are provided with convex parts and groove parts which correspond one to one so as to further improve the torsional behavior of the roller. In the method for manufacturing the insert, the insert, insert legs and a convex key which are integrated are formed at one time by an electroslag furnace and a crystallizer.

Description

technical field [0001] The invention relates to a composite rolling roll with inserts used in mine roller mills and metallurgical rolling mills and a method for manufacturing the inserts of the composite rolling rolls. Background technique [0002] The high-pressure roller mill and its system technology can reduce the power consumption of the grinding system by 20-100%, and increase the output by 25-200%. The grinding system solves technical problems such as drying, low output, and high wear. Its advantages of reducing power consumption, increasing mineral activity, and improving particle composition are becoming the standard supporting process for slag and steel slag micropowder. In the preparation of pellets, the high-pressure roller mill completely replaces the original wet grinding process, increases the specific area of ​​the fine powder, reduces the amount of bentonite, reduces the cost, and improves the quality of the pellets. [0003] At present, the structure of th...

AI Technical Summary

Problems solved by technology

Since the current moving roll or static roll adopts the above-mentioned structure and production process, it has the following disadvantages: ① wear-resistant materials consider their weldability, but sacrifice a certain wear resistance; The on-line surfacing welding process is difficult to implement due to lack of corresponding measures or measures. After surfacing welding, there are obvious cracks visible to the naked eye, and blocks will fall off quickly during use. Generally, the pattern layer is completely lost in 10-15 days, and even the hardened layer is damaged. ;③The effect of heat treatment with the core roller after surfacing is poor, the service life is low, and the protection measures for the online surfacing pattern layer are difficult to implement. The Φ2000×800 pair of rollers needs to be repaired once every 22-24 days on average, and it takes 4-4.5 day, consumables 168.5kg, worth 240,000 yuan

However, the above-mentioned slug is fixed on the core roller through clamping devices provided at both ends. This connection method mainly relies on friction to fix the slug, which can only resist a small torque. When the torque is large or the slug is partially affected The clamping device and the bolts used to fix it are easily damaged in the event of uneven forces

The wear-resistant layer assembled in blocks is adapted to the core roll. The key is the "block" structure and assembly method, so that it can meet the working conditions of the composite roll. The wear-resistant layer assembled in blocks is the form, and the "block" structure and The assembly method is the content. There is a gap between the current form and content, that is, the "block" structure and assembly method are insufficient to meet the requirements of the composite roll working conditions.

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