I gotta say, the moment I hear that alarm, heck, the moment I hear that steel flapping like that, I'm out. Not walking, running. If the hot steel flapping around doesn't kill you, the CO2 WILL.
@cyruslefforge7297
4 ай бұрын
My brother in christ, HIT THE E-STOP. they just let the mill run after the sheet breaks
@sammylacks4937
Жыл бұрын
I've never seen such extinguishing methods and cannot deny the effectiveness of it. However in certain situations it looks like employees would be in more danger from suppression than the fire.
@RahulTemgire
6 жыл бұрын
kzitem.info/news/bejne/kYyLro2hs6iGYKQ
@joshtalbot1086
7 жыл бұрын
People walking around in the c02 have a death wish!
@BartolomeoPestalozzi444
10 жыл бұрын
Exactly what causes the fire?
@Txepetxcc
10 жыл бұрын
Cold Rolling Mills use mineral oils and emulsions as roll wear reducing lubricant and steel coolant. In hot rolling the major component of the emulsion is water, with less than 10% oil phase, whereas in cold and foil rolling the base oil is the major component, accounting for more than 90% of the total lubricant volume. Currently, water based synthetic lubricants are being investigated, but their performance although high, is still under developement. Concretelly, by the time this was recorded, i assume they were using oil based lubricants. Spraying oil based lubricants at high velocity against the hot rolls of the mill generates oil vapour and a fog of fine drops. The impact of the hot steel banging with the machine may have produced a spark or a local increase of temperature igniting that fog and making the machine go green fire. Consequently, the operation of cold and foil rolling mills is always accompanied by the risk of fire. It is therefore essential both to provide fully adequate fire control equipment and to ensure that all operating personnel are trained in its use. A high capacity fume exhaust system plays a major part in preventing the build-up of potentially dangerous oil-air mixtures. Mill fire fighting equipment usually comprises carbon dioxide stored under pressure in gas bottles or at low pressure in bulk storage systems. Some mills have both high and low pressure systems installed. A major advantage of using carbon dioxide to extinguish mill fires is that it does not interfere with the subsequent operation of the mill or contaminate the lubricant. As a result, once the fire has been extinguished, the carbon dioxide replenished and the fire fighting equipment reactivated then any mechanical problem on the mill (possibly the cause of the fire) can be corrected and rolling recommenced.
@BartolomeoPestalozzi444
10 жыл бұрын
Txepetxcc very interesting to know, thank you
@edluce498
6 жыл бұрын
I think this is Logan Aluminum, not steel rolling. Cold rolling aluminum uses plain kerosene as a lubricant. As Txepetxcc notes, a lot of kerosene mist and vapour results. When the strip breaks (as it does sometimes), the rapidly bending metal strip can get hot enough to reach the flash point of kerosene.
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