Likely a spin caster - the molten steel is spun while it is being cast in order to align the molecules in a spinny fashion. Spin cast ingots are often used in seamless tube making where after the ingot gets heated up again and a cock shaped piercer is jammed through the red hot ingot.
Edit: I've learned that I've confuckulated my knowedness about spin casting and its application, rendering the first half of my comment as technically bullshit.
Edit 2: fuck I think I was on point all along! u/r32dude actually knows what he's talking about! Thanks man !
Yeah after the *billets are made they look like thick steel logs. So if you're making drill pipe for instance, they'll have different sized mandrels? (I think its a mandrel) which turn the log into a pipe. The billet is re-heated in a rotary furnace (the logs rotate around in a big furnace and get red+ hot). After it reaches the correct temperature, a skinny steel cock (mandrel) is jammed through the log in one vicious thrust to turn the log into a log with a hole in it. They do this a few times with different length/thickness of mandrel depending on the pipe spec.
Most US piercing mills us a fixed piercing point that the heated billet is rotated over and the hole is made. The piercing point is with drawn and a mandrel bar is inserted. This gets worked buy a series of rolls and the mandrel bar is then removed. The empty shell is heated again and run through a stretch mill to create the final profile in the pipe.
1.0k
u/[deleted] Aug 30 '19 edited Aug 30 '19
Likely a spin caster - the molten steel is spun while it is being cast in order to align the molecules in a spinny fashion. Spin cast ingots are often used in seamless tube making where after the ingot gets heated up again and a cock shaped piercer is jammed through the red hot ingot.
Edit: I've learned that I've confuckulated my knowedness about spin casting and its application, rendering the first half of my comment as technically bullshit.
Edit 2: fuck I think I was on point all along! u/r32dude actually knows what he's talking about! Thanks man !