+Mark Fryer Every time ductile iron is melted the graphite spheres change back to flake graphite. To get the graphite spheres again magnesium has to be bubbled through the melt.
Two questions. Is the waste oil cooking oil? And, you have the oil pressurized-- do you have it running through a hole to make a spray out of it? Hope these aren't incredibly stupid or obvious questions. Thanks.
Miguel Moreno I was melting aluminum cans in my backyard with blow torches when I was a kid, though not skillfully. Anyone can do that. Men melt iron and steel, yep
HELP PLEASE. I'm having trouble with my iron castings and think it's because I haven't added coal dust to my sand. Where do you find your coal dust? Do you simply make your own? I buy coal for my forge occasionally when I can't get coke and am wondering if I can just use this by grinding and pulverizing it. My local foundry supplier is terrific but they don't carry coal dust specifically. Thanks for your excellent instruction! A long-time subscriber!
I have noticed a few of your furnaces have the lid secured with extra weight or fasteners. Does the combustion within the furnace generate enough pressure to raise the lid? Thank you for your videos.
Kaowool has very little weight so that is why weights are used to hold the lid shut. Years ago I used a castable refractory which is very heavy so no added weights are needed.
lots of good stuff here. Thanks. I've been looking at burner parts and trying to decide between using my compressor or a pump made for moving oil into an oil furnace that puts out around 100 psi. Hmmm. I have a compressor, I don't have the pump-wonder which one I will go for? Years ago I was at the Smithsonian Folk Life festival and there was an Iranian family there (5 generations) blowing glass. They were running their entire furnace system of of a blower and drip fed fuel oil. In Iran they said they would often use waste olive oil. To melt glass in the melt tank you have to go to around 2500 and then hold at 2200 all day long. Their set up was crude and the glass full of seeds and strings but for making utility ware it all worked just fine.
I used a compressor because it only runs three times in the hour it takes to melt 14 kgs of iron.It only needs to top up loss of air pressure when oil is being burnt. I have heard other metal casters use 12v electric fuel pumps for their burners but they are pumping diesel not a heavy waste oil/ diesel mixture like I am using.
As ever, thank you for your words. I am pretty excited as the 8 gallon Jerry can I ordered will be coming in today. I can add the drain valve and the air line connection and see how it works. I am hoping that 20 psi will do the trick, if the oil seems a bit too thick for that I'll add a bit of diesel fuel to thin it out. With that part done-on to the burner part and then to the foundry part and then to the melting brake rotor part. Everything is process unless you can just go to Amazon and get one day delivery of all of your hopes and dreams.
Coal needs to have plenty of tar and other components that will burn on contact with molten iron. You can use sawdust as it will burn on contact with molten iron.
It depends on how thick and how thin your oil is. You only need enough pressure to keep the oil flowing so the burner operates continually. For a start use max pressure that your air compresser puts out and then reduce it to suit the oil you are using.
You pressurize your waste oil right in the thank instead than sucking it out with a fancy ventury. Did you use any nozzle at he end of the oil line to spray it in the force air tube or is it the blower how does that, or you just don't need the oil to swirl around? Where the oil line end according to the 2 inch pipe and the inside of the furnace? Thanks,
I use a nozzle to atomize the oil and it is located at the very end of the burner where it enters the furnace. The blower I use also helps to atomize the oil. Oil and air need to swirl around in the furnace so the crucible heats up evenly.
So, your blower pipe act like a ventury around your oil line. Did you just cap the end of your oil line and drill a 1.6mm hole in it or did you use a commercial nozzle? If you did can you tell me what is the type of nozzle?
When I started casting I thought it would need two vacs as blowers but one vac is enough to melt cast iron quickly. The Y is no longer needed and you can see a wood plug blocking it off.
Hi Tom Copland in Ayr Scotland. I have had a good education in furnace building from yourself and also Bomford Boy, I have now got all the materials for my furnace and i will get a start on it next week pay day. thanks for all the great info on green sand making and moulding boxes eg cope and drag etc. I just need some protective gear, and I can get on with my projects.
I appreciate your work. Good show! If you don't mind, what are the origins of a crucible like that? I've done some aluminum castings from a stainless steel crucible that's held up for years and would love to graduate up to casting iron to open more options for fabrication. Best regards!
I share asamina's problem so do i have to use both (copper and nickel) at the same time or one replace the other? and can you please tell us the proportion stuff? thanks a lot!
luckygen1001 Thank you very much. I want to melt ductile iron same as you. So I am little bit confused. Can ferro sillicon only able to bring back the ductility? Because some commercial producer uses magnesium treatment.
@@luckygen1001 magnesium boiling point and ductile iron pouring temps are similar correct? And magneiium fires can be bad is this why you don't add it back?); but, you will never get back ductile iron unless you add back boiled magnesium correct? Finally, looks like ductile iron has an even lower melting/pouring temp than most all cast irons? Thanks in advance!
"There it is, It's bent." (After beating with ball peen hammer.) LMAO But in all seriousness didn't seem as ductile as I thought, figured it would shatter. Great video
reading the questions and his respectful, professional & consistent replies under this channel is just like reading a book. thank you sir luckygen1001
You could try adding magnesium before the pour to gain the ductility back.
Now that would make a spectacular video.
Malcolm
Interesting video luckygen1001.
Question: How can you remelt ductile iron and maintain its ductile properties?
+Mark Fryer Every time ductile iron is melted the graphite spheres change back to flake graphite. To get the graphite spheres again magnesium has to be bubbled through the melt.
magnesium burns, so how do you bubble magnesium into melt?
Magnesium boils at 1100C. Cast iron is poured at 1400C so it boils and then when it hits the air above the molten metal it bursts into flame.
Genius!
Always wondered about this. Makes sense!
Is there normal air in the waste oil tube or is there oxygen gas?
Just air.
Two questions. Is the waste oil cooking oil? And, you have the oil pressurized-- do you have it running through a hole to make a spray out of it? Hope these aren't incredibly stupid or obvious questions. Thanks.
I use waste oil from cars and trucks. Yes I use a small hole to atomize the oil so it burns hotter.
Thanks!
That was a manifold from the days when GM actually made their own parts.
like this channel. He actually melts iron unlike most others youtubers, that never make it past aluminum
Miguel Moreno I was melting aluminum cans in my backyard with blow torches when I was a kid, though not skillfully. Anyone can do that. Men melt iron and steel, yep
Very interesting. I like the lever to move the top cover of your furnace to one side. I plan to make one for myself soon. Thanks for the video.
Thanks for your videos. They are really well made. I'm learning lots.
Thank you for a well made efficient and instructive video.
Thank you Sir.
about how many cubic meters of air per hour is perfect for melting cast iron?.. I mean the capacity of the air blower
to make ductil iron again you need to add Mg but pure Mg reacts to quick
Great stuff, learning heaps. Love how you repurpose old enging parts for your castings
I need to know why my cast iron or steel potburn a hole in them? I use coal
Make video how to make ductile cast iron
Please
What was the crucible you used made from?
HELP PLEASE. I'm having trouble with my iron castings and think it's because I haven't added coal dust to my sand. Where do you find your coal dust? Do you simply make your own? I buy coal for my forge occasionally when I can't get coke and am wondering if I can just use this by grinding and pulverizing it. My local foundry supplier is terrific but they don't carry coal dust specifically.
Thanks for your excellent instruction!
A long-time subscriber!
+RL Fort If you can get coal close to where you live, try it and see if it works.
I have noticed a few of your furnaces have the lid secured with extra weight or fasteners. Does the combustion within the furnace generate enough pressure to raise the lid? Thank you for your videos.
Kaowool has very little weight so that is why weights are used to hold the lid shut. Years ago I used a castable refractory which is very heavy so no added weights are needed.
lots of good stuff here. Thanks. I've been looking at burner parts and trying to decide between using my compressor or a pump made for moving oil into an oil furnace that puts out around 100 psi. Hmmm. I have a compressor, I don't have the pump-wonder which one I will go for? Years ago I was at the Smithsonian Folk Life festival and there was an Iranian family there (5 generations) blowing glass. They were running their entire furnace system of of a blower and drip fed fuel oil. In Iran they said they would often use waste olive oil. To melt glass in the melt tank you have to go to around 2500 and then hold at 2200 all day long. Their set up was crude and the glass full of seeds and strings but for making utility ware it all worked just fine.
I used a compressor because it only runs three times in the hour it takes to melt 14 kgs of iron.It only needs to top up loss of air pressure when oil is being burnt. I have heard other metal casters use 12v electric fuel pumps for their burners but they are pumping diesel not a heavy waste oil/ diesel mixture like I am using.
As ever, thank you for your words. I am pretty excited as the 8 gallon Jerry can I ordered will be coming in today. I can add the drain valve and the air line connection and see how it works. I am hoping that 20 psi will do the trick, if the oil seems a bit too thick for that I'll add a bit of diesel fuel to thin it out. With that part done-on to the burner part and then to the foundry part and then to the melting brake rotor part. Everything is process unless you can just go to Amazon and get one day delivery of all of your hopes and dreams.
Does cast iron have to be degassed like aluminum? Is there something special when melting the cast iron?
Cast iron does not need to degassed.
Very nice, could I ask what part of Australia are you in?
+Clayton Firth Victoria.
what kind of coal do you use for your dust? i can get coal near me but it is pretty sulfurous.
Coal needs to have plenty of tar and other components that will burn on contact with molten iron. You can use sawdust as it will burn on contact with molten iron.
What pressure are you putting into the oil tank?
It depends on how thick and how thin your oil is. You only need enough pressure to keep the oil flowing so the burner operates continually. For a start use max pressure that your air compresser puts out and then reduce it to suit the oil you are using.
I assume the oil is not heated. Could diesel fuel be used .?
@@lauriemattila5936 I’ve since built my own furnace. Diesel works great
@@AlecL Thanks for the reply, have built my own on “ My Fordboys “ design . Just beginning my journey.
@@lauriemattila5936 Can you melt iron with waste oil now?
Holy Christ, how are you so smart? Where did you learn to do so many things?? I'm new here.
Excellent demo.
You pressurize your waste oil right in the thank instead than sucking it out with a fancy ventury. Did you use any nozzle at he end of the oil line to spray it in the force air tube or is it the blower how does that, or you just don't need the oil to swirl around?
Where the oil line end according to the 2 inch pipe and the inside of the furnace?
Thanks,
I use a nozzle to atomize the oil and it is located at the very end of the burner where it enters the furnace. The blower I use also helps to atomize the oil. Oil and air need to swirl around in the furnace so the crucible heats up evenly.
So, your blower pipe act like a ventury around your oil line. Did you just cap the end of your oil line and drill a 1.6mm hole in it or did you use a commercial nozzle? If you did can you tell me what is the type of nozzle?
Also, why do you have a Y configuration on your burner? One is for the vacuum hose but what is the purpose of the other end? Thanks
Simon
It is a home made nozzle and a 1.5mm hole was drilled into it. A lot of people on youtube buy commercial nozzles.
When I started casting I thought it would need two vacs as blowers but one vac is enough to melt cast iron quickly. The Y is no longer needed and you can see a wood plug blocking it off.
What other kind of auto parts are made of ductile Iron, other than beating them with a hammer is there another way to test.
You have a really nice vocabulary I admire that.
Wish I had.
Hi lucky gen how can I get intouch with you via email
what pressure do you run the propane at and very informative videos
Always great videos! Good teacher!
Great setup and information! Thanks.
Hi Tom Copland in Ayr Scotland. I have had a good education in furnace building from yourself and also Bomford Boy, I have now got all the materials for my furnace and i will get a start on it next week pay day. thanks for all the great info on green sand making and moulding boxes eg cope and drag etc. I just need some protective gear, and I can get on with my projects.
Be sure to make some videos of your furnace build and projects.
I appreciate your work. Good show! If you don't mind, what are the origins of a crucible like that? I've done some aluminum castings from a stainless steel crucible that's held up for years and would love to graduate up to casting iron to open more options for fabrication. Best regards!
+Paul W It is a clay graphite crucible A6 size
Do you have plans for your furnace
Could you melt the iron on propane only? Is the oil essential for a higher temperature or to keep the cost of the burn down? Thankyou.
Yes you can melt cast iron with propane, waste oil is free but propane has to be purchased.
I would like to know more about your oil control valve. It looks like a fine pitch needle valve. Is that it?
Yes my oil control valve has a fine pitch so it can control the oil flow better.
what costs more propane or acetylene?
How long does your furnace take to melt a crucible full?
+Bill T Watch my video melting crankshafts it shows start to finish with a clock in the background.
I tried to find ferro silicone bt in my country not available what can i use to replace it coal can do the job ??
Copper and nickel does work but is not as good as ferrosilicon, also a lot has to added to get a small result.
I share asamina's problem so do i have to use both (copper and nickel) at the same time or one replace the other? and can you please tell us the proportion stuff? thanks a lot!
Is this a normal Graphite-Crucible?
+Cast and Forge Yes it is.
Thanks.
I got one too but the instruction says its just for about 1200C
Graphite electrodes are used to melt steel at 3000C, they can also be used in arc cutting with at least 5000C probably much more.
will you ever cast hi carbon steel?
+urjnlegend No
O material vc coloca pra purificar a liga metalica
Ferrosilicon.
Good tutorial. What amount of magnesium and ferro sillicon should I use to bring back the ductility?
0.25% ferrosilicon is a starting point. I have never used magnesium in cast iron.
luckygen1001 Thank you very much. I want to melt ductile iron same as you. So I am little bit confused. Can ferro sillicon only able to bring back the ductility? Because some commercial producer uses magnesium treatment.
Ferrosilicon will not make cast iron ductile, magnesium has to be added.
@@luckygen1001 magnesium boiling point and ductile iron pouring temps are similar correct? And magneiium fires can be bad is this why you don't add it back?); but, you will never get back ductile iron unless you add back boiled magnesium correct? Finally, looks like ductile iron has an even lower melting/pouring temp than most all cast irons? Thanks in advance!
@@mevk1 Yes magnesium has to boil in molten cast iron to make ductile iron.
"There it is, It's bent." (After beating with ball peen hammer.) LMAO But in all seriousness didn't seem as ductile as I thought, figured it would shatter. Great video
Ductile means it bends instead of shattering
What is the crucible you used....?
graphite
a6 size
urjnlegend THANK YOU,