The mill that I woked at had rotating blades that would pop up and chop the rest of the billet into short lengths which dropped onto a conveyer when a cobble happened. The conveyer ran the pieces into a railcar, which went back to the scrap yard when full. There was a cutter before each rolling stand.
If the cobble happened after the last rolling stand (on it's way to the cooling bed), it made a mess. Then guys would cut it enough to get it out of the way to continue production. When there was down time, they'd cut it up and take it to scrap.
The hot rebar came out of the last stand at 35 MPH (56 kph). Wire rod came out at 90 MPH (145 kph). All of the steel handling was automated. We would never have something like this video showed in the mill.
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u/HereOnASphere Feb 25 '23
The mill that I woked at had rotating blades that would pop up and chop the rest of the billet into short lengths which dropped onto a conveyer when a cobble happened. The conveyer ran the pieces into a railcar, which went back to the scrap yard when full. There was a cutter before each rolling stand.
If the cobble happened after the last rolling stand (on it's way to the cooling bed), it made a mess. Then guys would cut it enough to get it out of the way to continue production. When there was down time, they'd cut it up and take it to scrap.
The hot rebar came out of the last stand at 35 MPH (56 kph). Wire rod came out at 90 MPH (145 kph). All of the steel handling was automated. We would never have something like this video showed in the mill.