Main Features of a modern Wire Rod Mill Jan03

Main Features of a modern Wire Rod Mill...

Main Features of a modern Wire Rod Mill The objective of a wire rod mill (WRM) is to reheat and roll steel billets into wire rods. The production of wire rods in wire rod mills is subject to constant change. The growing demands on the quality of the wire rods as well as onĀ  the flexibility and cost effectiveness of the wire rod mills has necessitated the development of new and innovative technologies and processes. Modern wire rod mills are high speed mills capable of rolling of smaller dimensions at high production rates, while at the same time keeping investments and operating costs at the reasonable levels. As a rule, wire rod mills are designed for an annual output of between 300,000 t and over 800,000 t (two strand mills). The mills are capable of rolling at speeds ranging from 50 meters per second to 120 meters per seconds. Typical product sizes are within the 5.0 mm to 20 mm range. The range of materials comprises low to high carbon steels, cold heading steels, wire drawing steels, alloy steels, spring steels, ball bearing steels, electrode quality steels, reinforcement bars and tool steels. Modern wire rod mills are expected to meet the following requirements. High mill availability coupled with high productivity and high yields. Meeting the need of low maintenance. Meeting the need of lower energy consumption. Close dimensional tolerances of wire rods in the range of +/- 0.10 mm and ovality in the range of around 0.2 mm. Low scale loss in wire rods of around 0.5 % to 0.6 %. Negative tolerances (In sectional weight). No variation in dimensions throughout the length of the rod. Uniform physical properties. Uniform weight with nominal variation between middle and back end. For achieving these demanding requirements,...