Roll collar roller capable of cyclic utilization and production method

Abstract

The invention discloses a reusable collar roller consisting of a core shaft, an inner ring and an outer ring, and a producing method thereof. A bimetal collar formed by melting the inner ring and the outer ring is disposed at the body part of the core shaft by interference fit. High-speed-steel or high nickel cast iron which is raw material of the outer ring is put into a intermediate frequency stove to be heated and melted to alloy steel fluid with the temperature ranging from 1600 DEG C to 1650 DEG C, the cleaned seamless steel tube or low carbon casting steel tube which is used as the inner ring is preheated to the temperature ranging from 300 DEG C to 800 DEG C, and then is fed into a sand mold, the hyperthermia alloy steel fluid is cast into the sand mold and the casting temperature is held in the range of 1490-1540 DEG C, the inner ring and the outer ring are melt into a bimetal ring during the steel fluid setting process, and the bimetal ring forms a collar roller with the core shaft by interference fit after thermal treatment process. The collar roller is provided with a stable structure and a long life.

Description

technical field [0001] The invention relates to a recyclable ring roll for producing rods, strips, profiles, etc. and a manufacturing method thereof, which is applied to black and non-ferrous metal rolling. Background technique [0002] Since the "Tenth Five-Year Plan", my country's steel output has grown by more than 30% in the first year, which directly drives the expansion of the production capacity of the roll manufacturing industry. At present, there are more than 300 large and small roll factories in my country, with an output capacity of about 700,000 tons. China is not only the largest producer of steel, but also the largest consumer of rolls. In terms of roll structure, the situation at home and abroad is the same, except for a small number of special-shaped rolls such as horizontal rolls and vertical rolls of universal rolling mills, rolls in pipeline parts, profile straightening rolls, and cantilever rolling mill rolls, which adopt recycled split structure rolls,...

AI Technical Summary

Problems solved by technology

None of them mentioned that the roll ring must be "hard on the outside and tough on the inside", so as to improve the service life on the premise of ensuring the safe use of the roll. In actual use, these rolls will have collapse, damage, etc., so there is no large-scale promotion

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