High-sulfur alloy steel roll and production method

Abstract

The invention relates to a high-sulfur alloy steel roll and a production method. The high-sulfur alloy steel roll comprises the following chemical components by weight percent: 0.4%-1.0% of C, 0.5%-1% of Si, 0.5%-1% of Mn, 1.5%-10% of S, less than 0.05% of P, 4%-6% of Cr, 0.05%-1.5% of V, 0.1%-0.4% of Mo, less than 2% of W, 0.05%-0.1% of Ti, 0.005%-0.1% of Ba, less than 0.05% of Re, and the balance of Fe. The acknowledged rule that sulfur cannot exceed 0.03% is broken by the high-sulfur alloy steel roll; harmful elements are converted into beneficial elements; the produced high-sulfur alloy steel roll has the advantages of high-temperature resistance, self-lubricating property, abrasion resistance, and the like; no lubrication or less lubrication is required by the roll during application process, so that the working strength of workers is relieved; the rare metal Co is not contained, so that the production cost is lowered; an intermediate frequency furnace is used for melting; a horizontal centrifuge is used for pouring; a common high-temperature resistance furnace is used for performing thermal treatment; the equipment investment is less; the processing technology is free from annealing process; the production technology is simple and reasonable; and the production efficiency is greatly increased.

Description

technical field [0001] The invention relates to a steel rolling technology, in particular to a high-sulfur alloy steel roll and a production method. 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 anti-sticking steel, and the current research on rolling steel has made considerable breakthroughs at home and abroad. Chinese patent documents CN1424423A and CN1264749A disclose a cobalt-containing aluminum high-speed steel roll The manufacturing method of the ring, but cobalt is a rare metal, and the content is too large, resulting in higher cost. At the same time, the quenching temperature of this method reaches 1060 ° C, and th...

AI Technical Summary

Problems solved by technology

[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 anti-sticking steel, and the current research on rolling steel has made considerable breakthroughs at home and abroad. Chinese patent documents CN1424423A and CN1264749A disclose a cobalt-containing aluminum high-speed steel roll The manufacturing method of the ring, but cobalt is a rare metal, and the content is too large, resulting in higher cost. 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 compounded by Chinese patent document CN1454723A In the manufacturing method of the roll ring, ordinary centrifugal casting is adopted, and ordinary paint is used in the casting mold. It is difficult to remove the mold during the cleaning process after casting. Chinese patent document CN1164379C proposes a manufacturing method for high-speed steel roll sleeves, mainly using electroslag Production by re-soldering requires large equipment investment and low effect, and the above-mentioned production methods all need to anneal the cast blank in actual processing, and the process is cumbersome