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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.
Advanced
Factory process
Instructions
1
1
Heat the billet
Heat the billet
Heat the high-carbon billet above the steel's recrystallisation temperature.
Materials for this step:
High-carbon Steel Billet1 pieceTools needed:
Induction Heater2
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.
Tools needed:
Rolling Mill3
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.
Tools needed:
Induction Heater4
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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Materials
1- 1 piecePlaceholder
Tools Required
2- Placeholder
- Placeholder
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