- Joined
- Jun 15, 2009
- Messages
- 215
Hi jdm61,
We hot roll the billets from 5 inches to 1/2 inch at about 2100F. This can take anywhere from 7 to 14 passes depending on the grade. It then gets fully annealed, and rolled to the final thickness. The final rolling temperature is between 1450F and 1900F, depending on the grade. It gets fully annealed after this hot rolling too. The anneal process can take 3 to 6 days depending on how much material is in the furnace. A grade like CPM S30V has an annealed hardness of about Rc 25. No idea what the hardness is after it cools from hot rolling. All I can say is that you need to handle it like glass because it can break if you handle it too roughly.
Bob
We hot roll the billets from 5 inches to 1/2 inch at about 2100F. This can take anywhere from 7 to 14 passes depending on the grade. It then gets fully annealed, and rolled to the final thickness. The final rolling temperature is between 1450F and 1900F, depending on the grade. It gets fully annealed after this hot rolling too. The anneal process can take 3 to 6 days depending on how much material is in the furnace. A grade like CPM S30V has an annealed hardness of about Rc 25. No idea what the hardness is after it cools from hot rolling. All I can say is that you need to handle it like glass because it can break if you handle it too roughly.
Bob