You've got me on that one -- "heat treat bath explosion"
In an explosion there has to be a fuel that explosively combusts. What is the fuel in a heat treat bath explosion?
Hydraulic fluid on molten aluminum I get, but what can one drop of water do? Provide Oxygen to start molten aluminum burning? I am curous.
The expansion of water to vapor is incredibly powerful. A can of coke dropped in a furnace of molten metal or a salt bath for heattreatment would most likely kill every one in the room. The forces generated are incredible. Knew of a case in Michigan where a hot water heater pipe leaked in a furnace and destroyed the entire building. Good thing in that case in was at off hours.
"In an explosion there has to be a fuel that explosively combusts."
Not so. Boiler explosions are just one example.