How To Make The Metal Foundry . Steel Melting Furnace
How To Make The Metal Foundry . Steel Melting Furnace.
In this video, we show our longest-running steelmaking furnace project. The home foundry was made from an old gas cylinder. The furnace is designed for welding steel ingots and raises the melting point of steel. Unfortunately, the first start-up of the furnace was not entirely successful, namely the melting crucible burst. I think the subsequent swim trunks will be successful ... If you liked the video like it, do not forget to subscribe to the channel ... Thank you all for watching.
WARNING:
Foundries can reach temperatures in excess of 1,650ºC, which is well above the melting point of hobbyists. This project should only be attempted with adequate knowledge and training, proper protective safety gear, and in a fire resistant area with adequate ventilation. Use caution and common sense. Use of this video content is at your own risk.
#foundry #furnace #melting #knifemaking #fzmakingknife
0.00 preparation of the gas cylinder for disassembly
1:30 Disassembling the gas cylinder
4:55 fill the container with refractory mortar
6:00 Making a gas burner
10:08 Loading the crucible for trial melting
11:30 Let's see what happened (
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Мало по времени держали? Или тут нужно больше чем в горне держать?
Быстрый нагрев , лопнул тигель. Дальше не стали продолжать , все равно убежало бы)
@@fz-makingknives3663 а я не заметил, что тигель лопнул
For a tempature that high you may have to change crucible types like graphite would work much better for that, because it will get extremely hot also I love the design of it, really well done and even gave me an idea for a similar style, but I'll probably use a leaf blower motor because it's the same one that I've been using. Beautifully designed amd I look forward to seeing what you do with it
My God !!! Good thickness steel!!!
I commend you for showing the crucible failing rather than redoing it for the vid you taught us even more that way thankx for the awesome vid
👍
Since the "cat got his tongue" there wasn't enough information here to know what went wrong...so what did we learn exactly? This should have been named..."how not to make a foundry"
@@JBattler කදදඳද9ක9
Im sure its the liquid inside that got too hot for the crucible and bursted out
Failure for one is success in the future for others !
I do appreciate your honesty because you do not hide the image when the crucible bursted. Aside from this, you made a great job.
but the temp of 3002 deg is a bit deceptive
Ton of thought, design and smarts went into this build. We all learn somehow and that shows here. More solid than any of my previous builds. Be safe and have fun!
So a couple of features I've seen on other kilns is one, a drain hole out the bottom. The kiln is placed over a bed of sand, that way if the crucible fails while the metal is in a liquid state it drains out the bottom and can be collected from the sand. Otherwise you need to get it out of the bottom of your furnace. The other was the barrel that makes the body, if you had done another cut and made a bottom the same way you have a top, then the centre section can be lifted off and the crucible picked up without having to reach down into a hot kiln.
gotta coat it with itc ceramic. more heat efficiency and metal wont stick to it. if liquid metals gets into your refractory cement it will seep into all the pores. then it's scrapped.
This isn't a kiln, but a foundry. "Exactly the same, but completely different" is this situation.
No need for a drain hole but you can if you want, if metal spills in the furnace it can be chipped away after it cools down and the refractory can be patched. Making a removable center section is bad news, trust me you’d rather have to reach down in to a hot furnace with your tongs than to blast your legs with 2000 degree heat. I ran a foundry for 20 years so I have some experience with this stuff 😉
@@chrishayes5755 furnace walls should be cast with a layer of refractory over insblock which is high temp insulating foam blocks. Spilled metal will stick to it but once cooled down can be chipped away, it’s by no means trashed.
@@Arthurian. its a furnace
Adding an air shutter to the incoming side of the blower will give you better control. I absolutely love this channel!!
I love how you show what can be done with an angle grinder and a cheap SMAW unit, and basic tools. You don’t need much to start and to build cool and useful equipment. So man people never start because they think they need thousands of dollars worth of tools and equipment. This is proof you don’t. You just need some skill and imagination. And the one thing you’re always in control of: Effort.
I kinda want to mail him some gouging rods. I mean he already has the SMAW, so he could make such clean cuts with the right rods.
From old book they ran blower to direct flow around the circumference not directly at the crucible. Great video I enjoyed your build , looking FWD to watching you re-melt and pour those bearings .
From an old foundry man I couldn't agree more, and also bringing the temperature up steadily is always worth doing
I like the valve on the fan to throttle air flow. My local mens shed is building a furnace, using charcoal, we need to modify the design to throttle airflow down a lot as the fan blows way too much air.
That with cutting the tank filled with water can save many lifes. Hope people notice such things. Very ,very good Video! Respect!
Yes, even if a gas tank is empty and cleaned, gas will adhere to the surface of the metal and be released by the heat of cutting or welding. A well known cause of fatalities.
Thanks a lot for sharing this video. It gives me a lot of ideas how I am going to make mine... Thank you again 🙏
Thanks 👍
Bad luck, a interesting and informative ,video, if you ever have to cast refractory concrete again, it's a good idea to vibrate it, as you cast it, I use a needle gun on the casing, it's amazing how much more goes in, thank you.
Thanks 👍
so the mixture he used was in fact concrete slurry with sand and no aggregate. and the white fluffy substance was an insulation of some kind?
Love the scene, when attaching the handles. It's just magic. 😅
I'd put those bearings/balls in another small crucible and try again. All in all that forge looks incredible.
You can digest it. Don't throw away such good stuff.
@@fz-makingknives3663 Exactly, don't throw away such good stuff.
hi, i'm new to this business, can you see how i restore??.
Great video and what a great looking forge. I bet you guys are going to enjoy having that.
👍🍻
You are quickly becoming one of my favourite makers on KZhead!
Thanks 👍
hi, i'm new to this business, can you see how i restore??.
great video, I'd love if you could add captions, as to what you are doing, ingredients ratios etc.
That semi-melted slug was cool looking! I hope you polished it up and kept it.
Buen intento! A no desanimarse. Son excelentes tus vídeos!
Someone please buy this guy a hole saw.... 😂 Awesome video. I'm a fan!
the crucible burst because the temperature went so high so fast? You're achieving a higher level of magic!!! Can't wait to see what legendary blades come out of that
hi, i'm new to this business, can you see how i restore??.
Hi, love your videos and you make amazing knives but I was wondering if you could show how you make your crucibles?
Yay I also want to know!
Your work is very good and the forge is impressive! But the flame heats up one side of the crucible too quickly and there is no time for refraction...😫 But "the flame still burns" 🙂👍
Thanks
Awesome build and nice way to use an old LP tank and I like the way you cut your fittings in with out using a drill bit, Thanks!
You can remove the old valve by simplye unsrcewing it but lets continue watching. 👍 For showing its filled with water and using a angle grinder with guard on. Maybee using a Professional Silicium Carbide Crucible next time before ruing your foundry.
👍
Hey, it welded. Pretty interesting and honestly very good to show happening.
Как говориться, отрицательный результат, тоже результат)
Совершенно верно)
Looking forward to seeing it work in properly. Still a great job. Will you still forge out the semi-melted ball bearings?
I probably need to make a vote, to uncoil these balls for me or not?)
@@fz-makingknives3663 are they melted together or is it just glass sticking them together?
Beau travail et belle vidéo merci pour ta réalisation
That was an amazing build. ThankQ for sharing!!
I want to know what you use for your refractory cement if at all possible I made a forger few years ago it didn't last long the internal cement mixer I put in there melted and turned into like a glass lava rock substance
Thanks for showing the process. I'm sure you will get it dialed in. I like your coal fuel process, your crucibles are perfect and so well made. Gas to fast?
Thanks 👍
hi, i'm new to this business, can you see how i restore??.
Awesome! I have been waiting for somebody to do a detailed tutorial on one of these!
Thanks 👍
kzhead.info/channel/PL4OM4-ADk9b-vVc4VSkYdTZfj2bMPSPmC.html
I’m wondering if a double air flow would make it hotter
Was that propane fired with a PID controlled valve and a pyrometer in the heating chamber? How hot do you think you needed it? What is the solution to your unmelted shot? A bigger burner? The burner was that small tube, yes? Thanks for posting! Did you post a successful, subsiquent run? I haven't looked for one yet. Thank you!
Great video. That much skill as a fabricator, but you have never heard of hole saws lol? Either easy awesome job!
3/4 inch is maximum a hole saw can cut, you must be a newby
Really cool. Foundry working awesome. 👍👍🔥🔥🔥
Thanks 👍
Nice to see, although lack of important information on what material used
Amazing Brother.I Also make One For Alumunium Melting.But Yours Foundry Looks Pro Edition.Great Well Tried.
Thanks 👍
hi, i'm new to this business, can you see how i restore??.
@@restorationh.i.a7139 Keep Trying Brother.
Nice work! Looks great. A bit of tweaking and it should work just fine.
Thanks 👍
What is your mix of pouder for the melting?
Génial.. Bon travail merci beaucoup
A small setback but still a great job👍🏻
Thanks 👍
Hey man thats some good work👍 i just finished building mine but still need to insulate it what did you use for concrete? I see you used ceramic fiber insulation and chicken wire I think?
This was ages ago, still, he says in the description he used refractory mortar. I have some questions too, what's the little widget sticking out from the furnace? The one that looks like a little aluminum cube on a rod with a cable?
You can increase temperature adding a Thin layer of insulating cement called " black reflecting layer" based on the blackbody theory. It's made of refractory cement , Cooper oxyde and a Little carbon powder. Good luck
Thanks 👍
Does that reflect more IR?might do it to my forge 🤟
@@johngarland1641 yes, Thin layer meaning half an inch. Will you test It?
I noticed this video was made 8 months ago; yet in your most recent video you're still using the brick furnace. Is there a reason why you're not using this? Or is the brick furnace more efficient? Just wondering. Also wondering if you would do a video making crucible steel from drywall screws. I've seen you use other screws; but drywall screws are made from carbon steel so I don't know if it's possible without the knife being too brittle but it'd be worth a shot.
Thank you for the great video. Have a great day 👍👍👍👏👏👏
what is the three ingredients you use afer the steel? I love your knife making.
Dolomite, grafite, glass
hi, i'm new to this business, can you see how i restore??.
Thanks! What material is that white isolation?
Awesome content brother, I love the crucible steel you have made in other videos. It's a shame the crucible fractured in this one. I wonder if it's because the heat is directed to one side of the crucible via the pipe. Your brick coal forge has even heat around the crucible. It will be interesting to see future videos to see if crucibles are able to take the heat with this tank version. Is there any chance you can supply a recipe for the crucibles you make? Or an instructional video. The crucibles I've been able to make hold out to about 1100-1200 Celsius and I know high carbon steel wants about 1400. I don't want to spend money on graphite crucibles that I have to destroy to remove the ingot any help would be appreciated. Thank you and I love your work.
If the graphite crucible is in good shape then you should be able to remove the glass by fracturing and then tap the ingot out with a little finesse. I believe he uses fireclay, mortar, and graphite for his crucibles but I don't know what ratios.
Try silica quartz ceramic crucibles
Graphite isn't recommended for steels, carbon has a very high affinity for steel and the steel will eat away the crucible. Great for nonferrous metals though.
Yeah, thanks Trunkspace. My mistake I wasn’t referring to just the graphite ones, I know they are for non ferrous but you can buy the graphite/clay ones intended for ferrous metals. They gave less graphite and more clay however they are more expensive and that is what I was referring to. However fz has made an instructional video on how to make his crucibles so the problem was solved. Thanks for your input anyways 👍
So are you using a standard propane tank for the fuel source? Thanks -
That egg of steel looks like a dragon egg. Looks cool
Thanks 👍
And Monkey ! Came out of it !
What kind of crucible are you using? I can't see them anywhere online. Also do you have a recipe for the powders you add into the mix of ball bearings?
Den Tiegel macht er selbst. Schau Dir seine Videos an ;-)
Careful sawing that first valve off, before the residual gas is washed out :) The valve is usually non-sparking bronze/brass, but if the saw threw a spark you could have an unfortunate blowout.
@@domino2205 he was commenting on the 1st cut, through the brass gas fitting, all before flooding out the tank
Ellerine çok sağlık güzeller güzeli kardeşim !
Cool video! The main thing is not to give up! 👍
We never give up)😁💪
👍
thanks for the nice video, what is the powder you put in the little iron balls
Thanks for sharing :) I have a question: Why do you fill it with water before cutting if you emptied it?
Remaining gas in the tank has to be washed out. Even after emptying it, some will remain inside, and a spark could set it off, causing injury or worse.
I am impressed with the waste oil burner ♪
Класс. А я не понял форсунка просто с боку входит и все, не по центру? Они же там всякие крыльчатки неподвижные ставят, ну внутри трубы и по центру типо. А какая же температура в угольной плавильные?
That crucible failed, but thats a sexy looking ingot trophy ;) Nice build on the furncae. Every fail is a leson, you could read and watch for days and not learn what you did in 30min. GG.
That chunk of metal that you pulled out looks like a piece of modern art 🎨 or a dragon 🐉 🥚
You have an arc welder. Crank it up and burn a rod. You can make such nicer holes as oppose to the straight cut discs. I did the same. Burning it isway easier on the ears, discs and wrists. Give it a try
crank it way up so the rod burns through..
You're probably better off spending a lil extra $$ on a top or near a top of the line crucible because that's one bad ass furnace! Great work bro!!👍
Thanks 👍
@@fz-makingknives3663 ...You're welcome 😊!!
Is there a specific reason for the inflow pipe to be that long? I've seen foot longs, but that looks like 3 feets at least?
Awesome content could you do a video showing how to make a crucible?
Watch previous videos, everything is shown there.
Omg impeller blade!!! Jesus you are really blow my mind!!!😱😱😱😱
Thanks 👍
Sir could you please tell what was cotton like substance you filled walls with? Also composition of cement like stuff?? Thanks
Kaowool or ceramic fiber insulation
Please tell us what chemicals are used. Because you are mixing things that we don't know and you are doing a good thing that we like to do
Dein Kanal ist der beste und interessanteste. Ich bin froh ihn entdeckt zu haben. Handwerkskunst aus Russland ist immer ein Highlight anzusehen.
We are not from russia!
@@fz-makingknives3663 Es tut mir leid ich kenne mich nicht aus. Woher seid Ihr?
Thank's for the video . 4.00 what is the white foam you put inside ?
Metal cutting hole saws are worth every penny. Every single one.
Nah, I use me pecker mate, my foreskin cuts diamonds bro.
I rub my cock head against rusty metal all the time mate.
@@ronnybonny424 Pecker Mate, what is that, something like a FleshLight®?
@@RyshusMojo1 first-name pecker last name mate, metal removal tool.
Does it work with propane or butane only? I mean if you are using the oxygen or not.
04:48 wait wait what sorcery is this? Where'd that smaller pipe thingy come from? Is that for a type K thermocouple? 05:20 Is that refractory cement or plaster? What was that you added to the mix? Graphite? Last but not least that was a crazy looking concoction you were trying to melt... Did you make another video melting it again?
Maybe a follow-up on what needed to be repaired?
Questions: what is the batting you used, and why not just use concrete?
i love your workflow and video style.
Love the metal studded turd. Ball bearings off the cobb are always hard to digest. Haha
The crucible burst because it wasn't dry enough. Preheat it in the furnace before you charge it with your steel next time and then it should stay intact. Or buy one made of graphite for the next run.
If you are going to use DIY crucibles use fire clay or kaolin clay instead of cement for a binder
hello, did you purchace the problem after this fail melt of miniballs ??
I've used propane & air in my furnace for melting aluminum in a setup very similar to yours, although I controlled the air flow by blocking the blower inlet with a flat disc. I think you will need to use oxygen to melt iron or steel. I know the numbers make it seem possible for propane/air, but in practice I doubt very much you will be able to melt any ferrous metals without using oxygen, which is expensive...
So, did blacksmiths in the middle ages have access to oxygen tanks?
@@DirkStrange - It's really easy to make critical remarks about something you've never tried, isn't it? They didn't use propane. Coal burns significantly hotter...
@@ralphwaters8905 It's not the most efficient fuel for it, but propane is certainly up to the task of melting steel in a furnace. Ric Furrer has a video about making crucible steel with propane forges, just in case you're still skeptical.
@@Skinflaps_Meatslapper Thanks for the suggestion. I went and had a look at Ric's channel but the only steel smelting I saw used charcoal in a cupola-style furnace, and they only made iron blooms; no liquid in a crucuble. I'm pretty sure MY little foundry furnace could not melt steel with propane & air. MAPP gas perhaps. Just my limited experience. I'm not saying it can't be done, but I have yet to see it. If you have a video link, please share the wisdom.
@@ralphwaters8905 kzhead.info/sun/hdKbh915gpZvips/bejne.html
Are you using asbestos between the mortar and steel? Is there a safer alternative?
That was a cool idea but this foundry would eat a lot of gas, I hope. FZ how much gas did it took to melt this steel balls?
10 liters
I don't like these very heavy furnaces because they take a long time to heat. Mine is made of aerated concrete with thin high temperature bricks in the inside. Quick to reach temperature.
What was the gas you used to fuel the forge?
Oh ffs. I feal your pain, your honesty made a subscriber.
It would be helpful if you mention what it is you are mixing to the melt.
Could you please let me know whether it is possible to melt titanium by using this type of furance
На крышке надо решоточку для чайника 8.25 такой огонь
what are those crystals at the end?... Thank you and hugs from Lisbon, Portugal.
What is the container for steel made of? it would be a great help friend 🙂
Fireclay mortar graphite
what's powder you put in crucible ?
Dolomite, grafite, glass
How many minutes does iron melt in this system?
7, probably 7.5
What was it you use to reinforce the mortar, was it fiberglass? What was you mix with steel balls
Grande ! Che tipo di termocoppia hai montato ?
Sir which material did you mix with plaster of paris
The chamber is still the best,,it didn't cracked. Can i use normal gypsum instead of plaster of paris?
Nice but too elaborate for its use, also no point painting it, it will burn off in time. Needs a foot twist and a more stable base, but your going in the right direction 👍 But nicely edited mate👍
I need a foundry that can get to the hottest temperature possible, what temperature can this go to