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High-Carbon Steel Wire Rod: Billet Hot-Rolled to 9 mm and Coiled
Wire is drawn from rod, and the rod is rolled hot. In a rod mill a steel billet is heated above its recrystallisation temperature and passed through stand after stand of grooved rolls, each one narrower, until it is a round rod about 9 mm thick. The rod is laid in a coil, ready to be cleaned and drawn into wire.
The picture: our diagram, square billet to round rod to coil.
高级
Factory process
说明
1
1
Heat the billet
Heat the billet
Heat the high-carbon billet above the steel's recrystallisation temperature.
此步骤所需材料：
高碳钢坯1 个所需工具：
感应加热器2
2
Roll through the stands
Roll through the stands
Pass it through the roughing, intermediate and finishing stands of the rod mill. Each pair of grooved rolls makes the section smaller and rounder, down to about 9 mm.
所需工具：
轧机3
3
Keep it hot
Keep it hot
Finish about 50–100 °C above the recrystallisation temperature; reheat if the bar cools below it before the last passes.
所需工具：
感应加热器4
4
Coil the rod
Coil the rod
Lay the hot rod in loops into a coil and let it cool. It comes out covered in mill scale, which is removed before drawing.
5
5
Rod length from one billet
Rod length from one billet
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