The Shop > Metal Stuff
Dual Fuel Gingery Type Furnace
inthesticks:
Thanks LibbyHillBrewer. If the weather cooperates I'm hoping for a pour tomorrow to try the idea out.
Cheers
CB
inthesticks:
They forcast rain for later today but took a chance anyway and decided to run melting tests on the atmospheric burner.
Pictures:
1 The furnace ready to go, 2, 5 lb. charges of aluminum ready to go.
2 2 molds and the ingot mold ready to go, a salvaged SS grinder water pot to be used for the skimmed goo of the top of melt.
3 Safety equipment, pouring shank and Omega temp. meter.
Lit the furnace at 1:32 , gas press. at 20 psi and furnace cold.
1:38 initial charge melted, continued to add metal till pot 1/2" from lip.
1:48 Pot full, checked temp 1382*F , shut furnace down and skimmed melt, inserted shank and poured first mould remainder in ingot mold.
Melt time 16 min. from cold.
Returned crucible to furnace recharged with aluminum.
2:03 burner back on furnace hot added aliminum to fill pot to 1/2" of lip again.
2:16 Pot full, checked temp. 1406*F, shut down burner skimmed and poured.
Melt time from hot 13 min.
For 5 lbs the melt times are amazing. You bairly have time to catch your breath before moving to the next step.
The pouring shank worked like a champ, slide it in and that crucible is part of your arm, very good control.
Cheers
CB
inthesticks:
Continuing on with todays melt. Didn't want to get bogged down making patterns at this point so a decided to cast some more screwdivers and handles and just for a little fun a saucer. As most probably know casting a sauser, cup, and spoon is a classic test the old time apprentice used to work towards to become a molder. He could probably do a better job with just the saucer on his first day than I did here but hey the last time I made a casting was 31 years ago. Of course the difficult part is the cup and spoon. the complete casting requiers a 3 part mold. Maybe someday I'll get good enough to try it. This furnace can certainly melt the metal to keep trying.
So out of this melt I got 2-1.5 lb. clean ingots, 12 stubby screwdrivers and handles for files and punches, and the first step in a saucer cup and spoon casting. :)
That rain finally did come, more tomorrow so maybe Saterday we will test the dual burner.
Cheers
CB
PK:
Wow, those melt times are VERY fast!
inthesticks:
Yes they are PK I was amazed I had to work just to keep up. They weren't kidding when they called it a "Monster Burner" mine is a little more "monster" because of the larger intake bell. :clap:
Cheers
CB
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