How to make a steel melting furnace

how to make a steel melting furnace

Beer Keg Metal Melting Furnace

Aug 06, Making a Metal Melting Furnace Step 1: Make a Hole in the Edge of a Steel Bucket. Firstly you'll have to grab a steel bucket (the size depends on how Step 2: Make Some Insulated Concrete. Take some cement and mix some gravel which should be about 3 times that of the Step 3: Fill the Sides of. Sep 21, This furnace was used to melt steel and raise the carbon content to cast iron level so I could make model steam engine parts.

Last Updated: March 25, References Approved. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness.

There are 18 references cited in this article, which can be found at the bottom of the page. This article has been viewedtimes. Learn more If you want to cast metal into different shapes, you need how to do kristen stewart hair have a furnace that gets hot enough to melt the metal. While you can buy premade furnaces, you can also make your own using an insulated garbage can. Start by cutting the garbage can down to size and cheating spouse how to tell it with heat-resistant insulation.

Once you have the furnace built, insulate the lid so it retains heat and vents built-up pressure. Tip: If you have trouble cutting through the wool with a craft knife, then try using a serrated bread knife since it may cut through the wool easier. Support wikiHow by unlocking this staff-researched answer. Log in Social login does not work in incognito and private browsers. Please log in with your username or email to continue. No account yet? Create an account. Edit this Article. We use cookies to make wikiHow great.

By using our site, you agree to our cookie policy. Cookie Settings. Learn why people trust wikiHow. Download Article Explore this Article parts. Tips and Warnings. Things You'll Need. Related Articles. Part 1 of All rights reserved. This image may not be used by other entities without the express written consent of wikiHow, Inc. If the garbage is taller than 18 inches 46 cmput a metal-cutting blade on an angle grinder and turn it on. Carefully cut around the outside of the garbage can to trim it down to size.

Be careful of the cut edges on the garbage can since they may be sharp and could cut you easily. Attach a 1 in 2. Cut completely through the side of the garbage can. Line the inside of the can with 2 in 5. Ceramic fiber wool is a heat- and fire-resistant style of insulation that works well for homemade furnaces.

Push the piece of wool tightly against the bottom of the can. Then wrap the wool around the inner sidewalls of the garbage can as tightly how to make a steel melting furnace you can.

Ceramic fiber wool may cause irritation if it comes into contact with bare skin. Wear long sleeves and work gloves to help protect yourself. Cut out the wool covering the hole in the side of the garbage can.

Find the hole you made in the side of the garbage can and poke through it with a how to pass level 130 candy crush saga knife. Guide the knife around the edge of the hole so you cut through the wool lining the side of the garbage can.

Once you cut around the edge, pull the piece of wool out from the hole. Spray a rigidizer on the wool and let it set for 24 hours. Rigidizer is a chemical compound that activates the particles in the ceramic fiber wool so it solidifies and holds its shape.

Pour the rigidizer compound into a spray bottle, how to make a steel melting furnace apply it to all exposed sides of wool. Allow the rigidizer to air-dry for at least 24 hours so what is the best sleep number mattress can set and harden the wool.

Check the packaging on the wool to see if there are any special instructions. Paint the surface of the wool with furnace cement and let it set completely. Then use a 2 in 5. Let the cement cure for at least 24 hours before using your furnace.

Part 2 of Drill a 2 in 5. Attach a 2 in 5. Position the vent hole 34 inches 7. Fill in the bottom of the lid with 2 in 5. Push the wool into the bottom of the lid so it presses against the sides and holds firmly in place.

You can buy heat-resistant adhesive from hardware stores or online. Flip the lid so the handle faces up and locate the hole you drilled early. Poke a craft knife along the edge of the hole so it goes completely through the wool. Saw back and forth along the edge of the hole to remove the section of wool covering it.

Apply a rigidizer to the wool and leave it to cure for 24 hours. Put your rigidizer compound in a spray bottle, and apply it directly to the ceramic fiber wool on the lid. Brush furnace cement on all of the exposed wool to insulate it more. Smooth out the cement with the brush before letting it set for at least 24 hours. Part 3 of Feed a steel pipe or burner through the side hole of the furnace. The kind of pipe you use depends on what you want to use for your fuel source.

If you want to use charcoal inside of your furnace, then put a 12 in 30 cm steel pipe that has a diameter of 1 in 2. Make sure the pipe extends at least 1 inch 2. If you want to use propane, place a burner inside of the furnace and feed the valve end of the pipe through the side hole. Position the end of the burner inside your furnace so it points off-center.

Attach an air blower to the end of the pipe with a coupler if you want to use charcoal. A coupler allows you to attach pipes together without welding the pieces together.

Slide the other end of the coupler over the end of an air blower to force air through the furnace so it heats better. Attach an air supply hose between the valve on your propane tank and the control port on the end of the burner. Light your furnace so it can heat up. Turn on the air blower on its lowest setting to help the furnace heat up further. Reach a striker into the middle of your furnace and squeeze it to ignite the propane.

Use a crucible when you want to melt metal. Put the metal you want to melt inside the crucible and use a pair of fire tongs to set it in the middle of your furnace. Allow the furnace to heat the crucible and melt the metal before taking it out with tongs for casting. Did you know you can read answers researched by wikiHow Staff? Unlock staff-researched answers by supporting wikiHow.

Yes No. Not Helpful 2 Helpful 6. Not Helpful 1 Helpful 1. Not Helpful 6 Helpful 5. A clay crucible, which needs to be fired, or a graphite crucible, which can be bought online. Not Helpful 9 Helpful You will need a Type K Thermocouple and a digital temperature meter. I purchased one on Amazon that goes up to degrees F. Not Helpful 8 Helpful How can I get temperatures capable of melting more dense and high melting point metals, such as steels and chromium? Try induction coils to melt steel.

Chromium is more difficult rotary evaporator how it works of oxidation. Not Helpful 0 Helpful Will this system melt Tungsten? And if so, what material do I use for the crucible? Tungsten melts at degrees F -- way above coal or charcoal's burning temperature.

Introduction: Making a Metal Melting Furnace

Oct 10, Waste oil Burner Furnace Melts steel Crucible and causes runaway of molten metal out the bottom. The oil burner only used about 3L of Waste cooking oil to he.

So there is a long list of instructions on building a metal melting furnace. But I have decided to show you my process anyway. I have turned an old beer keg into a portable metal melting furnace, This will cover both the furnace and the propane torch burner.

I being in Canada relay heavily on Canadian Tire store and online product availability. The metals were acquired locally at a metal recycler and the chems were from a not so local chem supplier, OH and the melting material from a previous employer. Measure and cut the top portion away. I needed a lid to control the burn so I cut away the top 3 inches of the keg using an angle grinder and custom make bottle cutter jig.

The keg drop tube was removed leaving a perfect vent hole in the lid. Finally I cut a 2 inch hole approximately 4 inches from the bottom if the keg in the sidewall as shown. I have found over a long experimental range that a two bottle per bag ratio seems to work best.

This mixture is thoroughly packed into the open cavity of the Keg using any mechanical means necessary. NOTE: This may need more than 1 week to dry depending on your environmental conditions. Too soon and the mixture will fall apart. I actually needed 8 days for mine due to the cold nights. Carefully peel the cardboard tube out and remove the plumbing tubing.

The wax paper may stick but be sure the Perlite doesn't crumble. This is used as a refractory lining to prevent degradation of the Perlite. Without, I find that the Perlite will melt and become brittle after only 1 or 2 burns.

I am shown here with Nitrile gloves but these didn't last more than a couple of minutes in the mixture. Carefully and completely coat the entire surface of the furnace with the mixture. Fire the furnace to set the Aluminum oxide coating.

A nice glow of orange will indicate the completion of the set. As shown. Fabricate a frame and moving platform for the keg. The bolts are sized to attach the wheels.

The handle is galvanized conduit so if welding make sure to use a respirator or open air or safety. By the way Massive metal removal and smooth finish.

The adapter is then threaded into another brass fitting as prepared earlier. I have found that drilling at a 45 degree angle air inlet holes in relation to the airflow greatly reduces the amount of noise generated. These are intersecting with the point of the mig tip as shown. Inside of the 1. There is exact science here but I circumnavigated it to produce a hot and reliable flame.

On full power it will not stay lit outside of the furnace but will work properly when in place. The scrap is melted and poured into cast iron pans. This yields ingots of high purity and ease of use.

You say: "I have found over a long experimental range that a two bottle per bag ratio seems to work best. Also, now that its been many years, can you give an update to how long the refractory lining has lasted?

Reply 2 years ago. I guess the wording is a little strange It is 2 x 1L bottles. The refractory lasts forever if melting pewter which is where I mostly work now. I got around 20 firings for melting aluminum. Copper and bronze only lasts a couple of times before the Perlite starts to melt into brown glass and degrade.

I hope that this helps. Hey I am planning to line the outside of my foundry with ceramic fiber blanket, but I cant seem to find any place that sells ITC or any other sealant to seal the fibers. Would the sodium silicate mixture work for protecting the loose fibers? Reply 5 years ago on Introduction. I purchased this from a Canadian Tire store but the manufacturer is Mr.

Heater number F Hi Random I can get refractory cement mate it's fairly expensive even for a small pot but I dare say it would still be a lot cheaper than Althea other alternative you mentioned Cheers Dave. Thanks random I was also looking at another idea I saw from another site where the guy used perlite mixed with sodium silicate then after that had dried out completely he gave it a little burn and then used an inch of refractory cement over the top. He said that worked for him Regards Dave.

Thanks I just found this and man that's exactly how I want to build my own. I have several different sized pipes including large gas cylinders and I have filled them with water before doinany work on them. I wish you the best on your build. Sounds like you are playing safe! If you can get refractory cement, use that instead of the aluminum oxide. I just did a 4 pound aluminum pour and noticed some cracks forming on the ceramic layer as the furnace cooled. Thanks Random I will use refractory cement.

Would you suggest using ceramic type lining under the cement or use something different. I noticed some insulation down my way which is like fiberglass insulation. Any more suggestions please shoot them my way mate. Thanks Dave. The ceramic blanket insulation will work as well. The goal here is to contain as much heat in the furnace.

Make sure the get the blanket that is rated for the max temperature you want to go up to. Mine can be handled with bare hands immediately after a burn is done. If you use solid refractory cement the whole assembly will take many hours to cooled down before it can safely be handled. Just be sure to wear a respirator since the ceramic fibers are considered toxic to breathe. Note that with the refractory cement there is an additional item needed. These are called stainless needles, these work as a kind of rebar binding agent and will greatly extend the life of the lining and reduce cracking.

Plus they are available in bulk and super cheap. Where you buy refractory cement should stock them. This is the best one yet, primarily because of the ceramic layer to extend the life of the refractory. That is exactly how I got started This coating seems to work wonders I had a minor spill but after cooling the aluminum just pealed off.

I'm now at burn 26 and it still looks new! It would seem to be a function of your heat potential vs the melting point of the cast iron scrap. Steel melts at c. Thanks and possibly but I have no where near the protective gear to even want to try it. I'm not even sure if the refractory would withstand the heat. Melting point is one thing, but metals get soft when heated. I'd be extremely cautious with iron.

The crucible lifting points might bend out, or the welds holding the base could fail, dumping molten iron everywhere. Graphite is the common choice for a crucible. Reply 5 years ago. Very true, but what' the availability of maleable graphite in usable form?

Being on a fixed income, my first concern after finding a useable source of carbon would be "can I afford it? More by the author:. About: Professional work in various electrical and mechanical fields, obscure sense of humour and typically willing to help Currently under contract designing environmental monitoring equipment.

Spot the movie quote and get a 3 month pro membership. NOTE: No beer was harmed in this step. I acquired a defective stainless keg from a local brewery. Next I cleaned the cut line of all metal burrs. I used a concrete form and old plumbing pipe for this bit. Wrap the forms in wax paper to prevent sticking.

Comments:

20.01.2021 04:05 Vulkree:
Pedro Garcia

20.01.2021 16:26 Faurr:
About as brutal as it gets.