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+--- Thread: Steel Crucible (/thread-153.html)
Steel Crucible - doubleboost - 03-15-2012
Hi
I have a casting to do that will need more metal than my ceramic crucible will hold
A nice big steel melting pot
It will be 6 1/2 inch diamiter (that is the pipe i got given)
10 inches high (the bigest i can get in my furnace)
The material is 1/4 wall mild steel seam welded pipe
![[Image: P3150015.jpg]](http://i261.photobucket.com/albums/ii63/john970s0/P3150015.jpg)
Cut to length and the end squared up
![[Image: P3150014.jpg]](http://i261.photobucket.com/albums/ii63/john970s0/P3150014.jpg)
The end champherd ready for welding
I will be melting aluminium in this , not a great amount of heat but it will need a good weld as i dont want to get my feet wet
John
RE: Steel Crucible - Hopefuldave - 03-17-2012
My local PahndShop often has thinwall stainless stockpots about that size - not very durable, but would do as "disposable" crucibles, and only a couple of Quid... have lids with 'em too!
Just my ha'pennorth,
Dave H. (the other one)
RE: Steel Crucible - EdK - 03-18-2012
John,
That's a good sized chunk of pipe to be turning with no end support. I'm surprised you didn't have problems with it shifting on the chuck jaws.
Well done.
Ed
RE: Steel Crucible - doubleboost - 03-18-2012
Hi
Ed
It did not like it at all
Running it at a reosnable speed with a light cut got the job done
John
RE: Steel Crucible - doubleboost - 03-18-2012
(03-17-2012, 08:14 PM)Hopefuldave Wrote: My local PahndShop often has thinwall stainless stockpots about that size - not very durable, but would do as "disposable" crucibles, and only a couple of Quid... have lids with 'em too!Hi
Just my ha'pennorth,
Dave H. (the other one)
Dave i would stay clear of stainless crucibles
They do not like thermal shock
I had one made fron shed10 seamless pipe it was half full of molten bronze i put a large piece in to the pot (per heated) the pot split and the bronze ran out
John
RE: Steel Crucible - DaveH - 03-18-2012
John,
This melting "lark" does seem a tad dangerous at times
DaveH
RE: Steel Crucible - doubleboost - 04-15-2012
Hi
Lads
It is a bit on the cold side hear today a bit of welding should warm things up
Rob wilson kindly cut me a base for my crucible
This was tacked in place with a MIG welder
The job was then warmed up with a big propane torch
![[Image: P4150043.jpg]](http://i261.photobucket.com/albums/ii63/john970s0/P4150043.jpg)
A root weld was then put in with a TIG welder
140 amps mild steel filler rod
![[Image: P4150044.jpg]](http://i261.photobucket.com/albums/ii63/john970s0/P4150044.jpg)
![[Image: P4150049.jpg]](http://i261.photobucket.com/albums/ii63/john970s0/P4150049.jpg)
Plenty of penatration
A bead of Mig was then ran in
160 amp 0.8 mild steel wire
![[Image: P4150053.jpg]](http://i261.photobucket.com/albums/ii63/john970s0/P4150053.jpg)
Just to finish the job a couple of runs of MMA (stick) weld as a cap
120 amp 2.5 general purpose rod
![[Image: P4150054.jpg]](http://i261.photobucket.com/albums/ii63/john970s0/P4150054.jpg)
A bit rub up with the grinder
![[Image: P4150057.jpg]](http://i261.photobucket.com/albums/ii63/john970s0/P4150057.jpg)
John
RE: Steel Crucible - EdK - 04-15-2012
Nice welding job!
RE: Steel Crucible - ETC57 - 04-15-2012
Nice job on the welding John,
Ya know I never considered using a welding project to worm up my shop
but I like it!
Seams I always have something to weld up!
Jerry.
RE: Steel Crucible - Highpower - 04-15-2012
Not trying to be a stick in the mud here guys, but........
For the benefit of any folks here that might be new to metalworking & welding in particular - all of this "shop warming" is being conducted with a generous amount of fresh air ventilation and proper welding fume extraction. Right guys???
We wouldn't want to give anyone the wrong idea about welding in a closed up shop, breathing the noxious gases generated by welding that can make you really sick... or worse.