The invention discloses a high-
hardness impact-resistant cold rolled steel working roll. The working roll adopts low-
alloy high-strength steel, and the low-
alloy high-strength steel comprises chemical components (C, Si, Mn, Cr, Mo, V, Ti, S and P) and the balance of Fe and inevitable impurities. The
processing technique of the cold rolled steel working roll comprises the following steps of: teeming,
forging forming, heat treatment after
forging,
machining for forming, ultrasonic flaw detection, modulating treatment, preheating, line-frequency
induction treatment,
tempering, finish
machining, ultrasonic flaw detection, coarse
grinding of
grinding machine, finish
machining for modifying R, ultrasonic surface flaw detection,
hardness detection of finished product, and packaging and storing. In the chemical component proportion of the cold rolled steel working roll, Si and Mn with lower price are selected to improve the
hardenability of the material and change the
bainite in material tissues, the form distributed tissues has higher stability, tenacity,
crack initiation resistance capability, as well as high crack propagation resistance capability.