Production method of alloy steel roller

Abstract

The invention relates to a production method of an alloy steel roller, which comprises the following steps: 1) smelting; 2) furnace pretreatment; 3) casting; 4) rough machining; 5) quenching; 6) tempering; 7) finish machining. Compared with the prior art, the method provided by the invention has the advantages that (1) ferrous sulfide is used as an alterant, the produced alloy steel roller has the advantages of high temperature resistance, self-lubrication, wear resistance and the like, and the roller does not need lubrication or needs a little lubrication in application so that the working strength of workers is reduced; (2) without rare metal Co, the production cost is lowered; (3) the method adopts an intermediate frequency furnace for smelting, a horizontal centrifuge for pouring and a common high-temperature resistance furnace for heat treatment, so that the equipment investment is low; moreover, since an annealing process is saved in processing, the production process is simple and reasonable, and the production efficiency is greatly improved.

Description

technical field [0001] The invention relates to a production method of an alloy steel roll. Background technique [0002] The roll is an important part of the rolling mill in the rolling mill. It uses the pressure generated by a pair or a group of rolls to roll the steel. It mainly bears the dynamic and static loads, wear and temperature changes during rolling. Therefore, the requirements for rolling steel are very important. High strength, high toughness, high thermal fatigue resistance and resistance to sticking to steel. And at present to the research of steel rolling both at home and abroad also obtained sizable breakthrough progress, Chinese patent documents CN1424423A and CN12647494A disclose a kind of manufacturing method of cobalt-containing aluminum high-speed steel roll ring, but cobalt is rare metal, and content is too big, causes The cost is increased, and at the same time, the quenching temperature of this method reaches 1060°C, and the high-temperature heat tr...

AI Technical Summary

Problems solved by technology

And at present to the research of steel rolling both at home and abroad also obtained sizable breakthrough progress, Chinese patent documents CN1424423A and CN12647494A disclose a kind of manufacturing method of cobalt-containing aluminum high-speed steel roll ring, but cobalt is rare metal, and content is too big, causes The cost is increased, and at the same time, the quenching temperature of this method reaches 1060°C, and the high-temperature heat treatment makes it difficult to control the quality. A high-speed steel composite roll ring proposed in the Chinese patent document CN1454723A adopts ordinary centrifugal casting in the manufacturing method, and ordinary centrifugal casting is used in the casting mold. Coatings are relatively difficult to demould during the cleaning process after casting. Chinese patent document CN11643790C proposes a manufacturing method for high-speed steel roll sleeves, which is mainly produced by electroslag re-soldering. The equipment investment is large and the effect is low, and the above-mentioned Several production methods need to anneal the cast blank in actual processing, and the process is cumbersome