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The effects of heat treatment on the properties of multi-element wear-resistant low-alloy steel (MLAWS) which is used to make the liner of rolling mill torus were researched. The results show that when quenching temperature is lower than 900 ℃, the hardness increases with the increase of temperature, and when quenching temperature is higher than 900 ℃, the hardness decreases with the increase of temperature. As quenching temperature is lower than 920 ℃, the effect of quenching temperature on the impact toughness is not obvious. When quenching temperature is higher than 920 ℃, impact toughness decreases with the increase of temperature. When tempering temperature is higher than 450 ℃, the hardness begins to decrease obviously. After tempering at 350 ℃, the best wear resistance was obtained. According to the service condition of rolling mill torus liner, the MLAWS is quenched from 900-920 ℃ and tempered at 350-370 ℃.
The effects of heat treatment on the properties of multi-element wear-resistant low-alloy steel (MLAWS) which is used to make the liner of rolling mill torus were researched. The results show that when quenching temperature is lower than 900 ° C, the hardness increases with the increase of temperature, and when quenching temperature is higher than 900 ° C, the hardness decreases with the increase of temperature. quenching temperature is higher than 920 ℃, impact toughness decreases with the increase of temperature. When tempering temperature is higher than 450 ℃, the hardness begins to decrease obviously. condition of rolling mill torus liner, the MLAWS is quenched from 900-920 ° C and tempered at 350-370 ° C.