| 摘要 |
The invention relates to a method of producing a steel product, comprising providing a steel workpiece, and working the workpiece by a cutting operation The steel of the workpiece is a stainless ferrite-austenite steel having a micro-structure essentially consisting of 35-65 % by volume of ferrite and 35-65 % by volume of austenite The steel has a composition containing, among other things, 0.005-0.07 C and 0.15-0.30 N, in % by weight The invention also relates to the steel product being a suction roll shell having a plurality of through holes The steel workpiece has a high strength and good corrosion resistance, but is also suitable for cutting operations, such as turning, milling and drilling, without requiring the addition of sulphur. |
