The steel bar production line with the annual capacity of 50K to 300K tons for the production of bars Φ8-32mm of common carbon steel, wire rod steel and low-alloy steel. The production Line uses 100×100–150×150 continuous casting billet, which of length 3000mm–6000mm and provided by the internal steelmaking continuous casting workshop. The annual output of 50,000-300,000 tons requires 330,000 tons of continuous casting billet, and the comprehensive finished product rate is 98% (considering negative deviation). It applies regenerative pusher type reheating furnace of gas fuel, the heating capacity is 40-80t/h. There are sixteen rolling mills divided into three group rolling mills of rough rolling, medium rolling and finishing rolling. The layout type is 6+6+4 H-V rolling mills and their main transmission adopts PLC control.
Process flow of bar production line
Billet acceptance → heating → rolling → multiple length cutting→ cooling → shearing → inspection → packaging → metering → warehousing
The main equipment includes:
1. Furnace runoff roller table x 3set
2. Roller table before the rolling machine x 2set
3. The elevator behind the machine x 1set
4. Three-roll mill (contains the main motor, Reducer, Three-axle Gearbox, Flywheel Set, Pin Coupling, Universal joint, main unit)
5. Two-roller horizontal rolling mill (including main motor, reducer, two-axis gear box, Pin Coupling, Universal Joint, main unit)
6.Two-roller vertical rolling mill (including Main motor, Combined gear box, Pin coupling, Universal joint shaft, Vertical rolling stand 7, conveyor roller)
7. Crop shear
8. Double Cold shear
9. Cooling bed/Stepping cooling bed (including upper and lower cooling bed rollers. The total length is 60 meters.)
10. Cut-to-length Cold shear
11. Collecting stand
12. Cooling system and hydraulic lubrication
13. An electrical control system
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