continuous casting of steel - jerking
continuous casting of steel - jerking
(OP)
Hi all, I would like to know if somebody belong to this forum has experiences about jerking problems on continuous casting machine for steels.
my questions are:
1. if you have jerking, a part to depend on the steel grade to be cast which may "stick" more or less into the mould, which are the other factors from which jerking depends?
2. how could you avoid jerking if you have it? on which casting processing parameter it is more appropriate to operate?
3. do somebody have some guide line to avoid jerking problems?
thank you very much for all your help.
best regards,
Alloy33.
my questions are:
1. if you have jerking, a part to depend on the steel grade to be cast which may "stick" more or less into the mould, which are the other factors from which jerking depends?
2. how could you avoid jerking if you have it? on which casting processing parameter it is more appropriate to operate?
3. do somebody have some guide line to avoid jerking problems?
thank you very much for all your help.
best regards,
Alloy33.





RE: continuous casting of steel - jerking
nick
(I first thought you might be a student in college, on second read you may just be an enquiring mind..
Likely has something to do with the caster powder, the vibration frequency of the mold, the coolant flow of the mold, and the magnetic stirring in the tondish)
RE: continuous casting of steel - jerking
Get your mold powder vendor to bring in their technical rep. And get very strict on your practices. You will need to show the expert thr range of the key operating parameters, and especially where they are when sticking occurs.
This is a real well known problem that has already been solved. Go to the people who know. If your mold powder vendor can't solve it, change suppliers. Unless, of course, it is the result of imprecise operating management.
RE: continuous casting of steel - jerking
RE: continuous casting of steel - jerking
web: http://www.aist.org/
books:
1. "Continuous Casting" Volumes 1-10, published by ISS (now AIST)
2. "The Making, Shaping and Treating of Steel, 11th Edition - Casting Volume", published by AIST
It isn't always easy solving sticking problems, just remember not to change too many variables at a time. Keep good records of what you do, when you do it, and what the outcome is. And one thing to do is to look at your history, prior to the onset of a problem. If you have tracked various caster parameters and have a good, reliable history, a review of the current conditions may provide the "Aha factor" to solving your problem.
In my previous life as a casting metallurgist, there were four factors that were predominately the cause of sticking at our caster: temperature, casting speed, mold lubricant flow, and shrouding backpressure. These were the issues we usually addressed first. Also, we found it critical that the cooling water side of the molds be free from any scaling. (Water conditioning was critical and each mold was tracked to a specific cleaning schedule.) Just a small word from my experiences.
Good Luck!
~NiM