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| New Furnace Build ,,, Cupola |
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| Rob.Wilson:
--- Quote from: lordedmond on April 04, 2011, 03:48:24 AM ---Rob Having been around molten metal for the first ten years of my working life I used to work at Stanton ,part of Stanton and Staveley ( I am a sparks ) we had blast furnaces x6 and more small cupola's than I can count , plus in the latter years induction furnaces from 750kw to 1.5 mw My point consider a few vent holes in the drop base to vent the refractory are you going to use lime stone as a flux along with two level taping holes. as you can guess seeing iron casting inc ductile ( with the magnesium flare ) was common place , the finest casting was to cast nuts and bolts that screwed together without any machining good luck with the project , bet it will have a 20 foot flame on blow down before the bottom is dropped Stuart --- End quote --- Hi Stuart Thanks for the input :med: ,,, i had not considered putting holes in the base to vent the refractory as i had planed to just sit the furnace on the base ,, is it beneficial to have a few holes in the base ? I am still undecided weather to use limestone as a flux ,,,,,,,,i will have ago without at first and see how things go ,,, as it is a small furnace it may not (i hope ) have too much problems with slag . I probably will still add a slag tapping point . Rob |
| lordedmond:
Rob all I can say all the ones at Stanton had vent holes in the base ,they were a bit cruder than your project with just two half circle doors held up with a prop , a chain was attached at the end on the shift , this was then fastened to a Lansing Bagnel Tractor , then away we go prop away and bottom dropped if you were lucky :D the best bit or worst was if there was water in the pit :) the day end process was to blow down the cupola to get rid of most of the remaining coke the drop the bottom FYI the blast furnaces had 4000 hp steam turbine blowers with coopers stove to heat the blast the pipes before the tuyere's glowed red hot , the cupola's had 50 hp to 150 hp blowers , most of the equipment when I was there before 1972 ( 10 years ) was DC |
| Rob.Wilson:
Sounds a fun place to work Stuart :dremel: Was that a Lansing Bagnel Tractor a TUG electric ? Here is one of the places have the pleasure of working in :ddb: :ddb: :ddb: :ddb: The crucibles are over 6 foot tall and the moulding flasks ,,,,,,,,,well i could park my van in them :bugeye: Well i got a wee bit more done tonight ,,, not allot ,but moving forward :dremel: Drilled the four radial blast holes in the barrel ,,,,, i used my handy doodad tool to mark the position of the holes ,,, great tool made in the USA . i marked a line around the barrel some 11" up from the bottom ,,, stick the tool on with the point touching the line and mark that position . rotate barrel 90 degrees and make sure it cant move remove tool and reset it back on the barrel with the pointer at zero repeat until all four positions are marked out ,,,,,,,,,,,,,,,,,,Nice and easy ,,,,,,,,,just right for a Geordie bloke :D then i burnt out a couple of large washes from some 3mm plate for the wind belt Rob |
| John Stevenson:
--- Quote from: Rob.Wilson on April 04, 2011, 05:23:27 PM --- repeat until all four positions are marked out ,,,,,,,,,,,,,,,,,,Nice and easy ,,,,,,,,,just right for a Geordie bloke :D Rob --- End quote --- Is there still 360 degree's in a circle up there ? Just wondered because some thieving tyke is liable to have nicked a few :scratch: John S. |
| lordedmond:
Rob by hek they did not use this new fangled lecky thing the older ones were petrol then the went modern and got a diesel one or two yes it was very interesting but very old I was there 1962 - 1972, they were still casting pipes vertically in a pipe pit using hydraulic king post cranes , lot of hydraulic accumulators around the place. It was a common site to see a Lansing Bagnal towing a truck with a five ton ladle on molten iron trundling out to a casting plant sloping everywhere :) the biggest sand casting was for slag ladles they were built up moulds bricks held together with sand ,straw and hoarse dung then struck off with a strickle to get the shape ( one of my uncles did that type of moulding ) another one did brass casting using the crucible in the pit method of course the large volume runs ,for tubing plates were done with sand slingers on a rotary roundabout track ( they were still using the same plant that used to make bombs during WW2 ) that plant used a different type of furnace to melt the iron called a Cessey SP. I never saw those but they had stainless steel pipe it the very top that pre heated coal dust which was blown in at the bottom What I ddi see was the time they were doing a huge order for the tubbing plates ,they brought down from the blast furnaces the iron in 75 ton ladles ( just to speed thing up a bit ) the of course was the pipe spinning plants that was a sight to behold iron spraying out like cathereen wheels :) when the socket end failed sorry to go OT in your thread but seeing the word cupola invoked many old memories , but at the time it was just normal part of my working life ( it was no fun though to have to mend the cranes that had the 75 ton ladle stuck on the hook it was hot ) Stuart |
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