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采用提高回火温度20～30℃的办法,可缩短轧辊的回火时间10～15小时。这不仅使轧辊的整个热处理时间大为缩短,同时还能
By increasing the tempering temperature of 20 ~ 30 ℃ approach, can shorten the roll tempering time of 10 to 15 hours. This not only greatly reduces the overall heat treatment time of the roll, but also allows it to work