Best Mat'L, to "Re-Bed" Grates on a Flat Bed KAA2 Stoker.

dave brode · Post by **dave brode** » Tue. Nov. 19, 2013 10:14 pm

All,

The furnace cement done at the factory isn't holding up well. Anyone tried high temp RTV?

TIA

Dave

McGiever · Post by **McGiever** » Tue. Nov. 19, 2013 10:16 pm

Anyone tried high temp RTV?

Don't think you'll find a RTV that is rated up to temps of a coal stoker grate.

dave brode · Post by **dave brode** » Tue. Nov. 19, 2013 10:20 pm

McGiever wrote:
Anyone tried high temp RTV?
Don't think you'll find a RTV that is rated up to temps of a coal stoker grate.

Dunno. How hot do you think it runs?

Whatfer brand Cement you guys have luck with?

McGiever · Post by **McGiever** » Tue. Nov. 19, 2013 10:28 pm

Somewhere up near 1500-2000, maybe.

Big box stores have a couple brands of cement in small plastic tub and some have it in caulk tubes.

2001Sierra · Post by **2001Sierra** » Wed. Nov. 20, 2013 11:56 am

I used Imperial furnace cement from True Value. The stuff had great adhesive properties, sticks well, and great fun to get off your hands. I dampened the cast area first and then spread the furnace cement with my finger, no tools I found worked as well. Run a dampened finger over it, smoothes out real nice. Holds up well. Good to 2100 F.

McGiever · Post by **McGiever** » Wed. Nov. 20, 2013 5:58 pm

Our local Home Depot has small (8oz size) plastic tub of Imperial Cement, and it's made in USA.

dave brode · Post by **dave brode** » Wed. Nov. 20, 2013 8:34 pm

Thanks, Gents. how much cure time before re-firing??

2001Sierra · Post by **2001Sierra** » Wed. Nov. 20, 2013 9:00 pm

Says 24 hours mine went 12 hours tops and is doing just fine. You know my grates sat there all summer, and guess what it was forcasted for a cold nite and who would of thunk to seal the grates ahead of time

Before work sealed them, and fired up after work with no problem. If it drys and seals as quick as it does to my fingers 24 hours drying time is overkill.

dave brode · Post by **dave brode** » Wed. Nov. 20, 2013 10:08 pm

2001Sierra wrote:Says 24 hours mine went 12 hours tops and is doing just fine. You know my grates sat there all summer, and guess what it was forcasted for a cold nite and who would of thunk to seal the grates ahead of time Before work sealed them, and fired up after work with no problem. If it drys and seals as quick as it does to my fingers 24 hours drying time is overkill.

LOL, yea, a guy should look at them close well before heating season.