Cryogenic Guide Rails for 400-Ton Arctic Mining Haulers: 600 mm Strokes at −45 °C
Two hundred kilometres north of the Arctic Circle, autonomous haulers dump 400 tons of iron ore every ten minutes. The hydraulic lift cylinder that tilts the 80 m³ bed is guided by guide rails that must survive −45 °C cold starts, 6 g vibration, and 30-year salt-spray exposure without a single defrost cycle. Cryogenic metallurgyStandard 52100 steel becomes brittle below...
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