billet removal inside a pusher type re-heating furnace

For general maintenance, we always planned for it ahead and ran the furnace empty by rolling all charged billets prior to the shutdown.

Anticipation and planning is the key to eliminating waste as you describe.

milo

Milo, how you will empty the pusher type furnace with the raw material inside at 150 x 150 x 6000mm billet. What is the plan, that one i need a suggestion, thanks.

you're welcome.

You have to give more specifics about your furnace layout. Can you get to the billet yard from the discharge end of the furnace too, or only at the feed end?

What is your furnace layout side door feed of billets or end feed of billets?

What is furnace length I'm thinking you have 300 billets if your furnace is 50 meter length,.

I'm presuming there are skids down to the discharge door to the mill table that feeds the mill. does that table also have provision to travel into reverse back out into your billet yard? Or is it only one way out towards the mill?

Is there length for the full billet out of the furnace before the first roughing stand? Or is part of it still in the furnace as it comes out of your furnace?

Have you considered whether you need to totally empty the furnace, or just one zone?

How low a temperature are you planning to take the furnace down to? how long is your planned outage?

What is the work that you are planning to do on the furnace it self? Furnace work, Or water cooled skid maintenance?

You are committed to saving the billets rather than leaving them in and rolling them as merchant grade after you restart? Do you have to get them out in order to do that work? Really?

The bargain of high production efficiency and ease of use of a pusher furnace is definitely achieved at the cost of emptying the furnace at the end and refilling the furnace at the beginning of a campaign.

Send me a private message with details by clicking my name above.

milo

hi milo, i am sending you private msg but i encounter problem, anyway thanks for the reply. the furnace is 30M lentgh, the billet is laying on a fuse block at soaking zone and stainless steel in the preheating and heating zone. billet is discharge thru ejector mechanism of which it will push until exited in the roller table going to the roughing stand. we want to empty the furnace because we suspected some problems in the hearth because billet was stuck up during operation and overlapping was occured also. thanks