Forge Welding in the Induction Forge - blacksmithing
Рет қаралды 38,333
3 жыл бұрынUsing the induction forge to forge three leaves then forge weld those into a bundle that is then welded to a longer bar. This is simply a test piece, but the element could be used in a number of different applications.
Black Bear Forge is sponsored by:
Combat Abrasives - bit.ly/3r73P8d
Use code "Blackbear10" for a discount on your next order
My new anvil is from Fontanini Anvils
Ending music sourced from Epidemic sound -
Valley Dance - Rune Dale
Video recorded using:
Canon EOS R Mirrorless Camera - adorama.rfvk.net/J50gq
Canon RF 24-70mm f/2.8 L Lens - adorama.rfvk.net/6bb7yV
Rode Wireless Go microphone - adorama.rfvk.net/YggLRm
Video lighting in the shop Dracast S series - adorama.rfvk.net/e44DyZ
My name is John Switzer, I operate Black Bear Forge, a small one person blacksmith shop located in southern Colorado. My current focus is shifting away from commissions and customer orders and towards education through these videos on KZfaq. Thank you for watching
To provide financial support use one of the two links below.
www.paypal.me/BlackBearForge
Or you may set up a monthly contribution through Patreon
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Mailing address:
Black Bear Forge
P.O. Box 4
Beulah, CO 81023
If you are curious about some of my other interests, you may like my second channel
John Switzer
/ @johnswitzer
Find me online at:
www.blackbearforge.com
www.blackbearforge.etsy.com
/ blackbearforge
/ black-bear-forge-20986...
Below you will find useful links that will help you in your journey as a blacksmith.
My blacksmiths apron
www.Forge-Aprons.com use code BBF
RZmask 99.5% dust mask
rzmask.com?afmc=ay
To find more information in blacksmithing in the US or to search for your local ABANA affiliate group visit.
www.abana.org/
Blacksmithing tools and supplies
Self contained air hammers - www.saymakhammers.com/
General blacksmithing supplies - www.oleoacresfarriersupply.com/
General blacksmithing supplies - www.piehtoolco.com/
General blacksmithing supplies - www.centaurforge.com/
General blacksmithing supplies - www.blacksmithsdepot.com/
General blacksmithing supplies - www.blacksmithsupply.com/
Square head bolts and lags - www.blacksmithbolt.com/
New anvils - www.oldworldanvils.com/
New anvils - www.nimbaanvils.com/
New anvils -
Industrial supplier - www.mcmaster.com
Tong blanks and tools - kensironstore.com/
Fire brick and refractory - refwest.com
Most of my videos are shot on the Canon M50
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Audio is recorded using the RodeLink Filmmaker Wireless Microphone Kit
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Blacksmithing and related activities can be hazardous. These videos are not a substitute for competent professional instruction. Your safety is your sole responsibility. Always use appropriate safety equipment including eye and ear protection when working in the shop. Follow manufactures safety guidelines for the use of all equipment. In the event something shown in one of these videos seems unsafe, it is up to you to make the appropriate changes to protect yourself.
@jimmyjohnson7241 3 жыл бұрын
John, Looks like you picked up the basics of the induction forge quickly. I have been using mine for about a year and found a couple of useful tricks: 1. The insulating sleeving on the coils that comes with the machines is just a standard fiberglass weave, not ceramic, and will melt if touched with forge weld temperature steel. However if you brush the weave with a kiln wash it will become impervious to high heat and quite durable. At the end of the day when your hand gets tired and shaky it is very easy to short coil loops that are not insulated, with possible damage to the welder circuitry. The kiln wash that I use is water based colloidal alumina sol mixed with Zircoplax Plus (very fine zirconium silicate) to a thin creamy consistency. It is brushed on in place and dries in less than a day. It can also be directly painted on the bare coils, but is not as damage resistant. You should be able to obtain the materials at a pottery store or online. 2 Matching the coil size and shape to the work is key for rapid heating and high temperatures for induction welding. Because the flare nut coil connections that came with the unit are not designed or intended for rapid or frequent changes the hassle of coil changes often results with "living with" the coil that is present. I highly recommend that you look into a quick change coil connection that requires no tools and can be done in less han one minute. It will also eliminate the metric flare nut and metric tube size hassles that are involved with the current system on most inductions heating units. I made my own very simple version of quick connect and it has greatly improved my induction heating experience. It also prevents damage to the machine copper plumbing from torque on the high frequency output transformer flare fittings. I would provide pictues if the forum allowed. Jimmy Johnson
@harrisgraves592 3 жыл бұрын
Thank you, for sharing that.
@BlackBearForge 3 жыл бұрын
I would love to see the quick release system, you can email a picture to switz@mindspring.com
@michael5529 2 жыл бұрын
@@BlackBearForge did you ever get pictures of the quick release connection or the product itself?
@erikcourtney1834 3 жыл бұрын
I’m glad you tried the no flux weld. That’s the first thing I wondered about when you mentioned forge welding.
@johnjude2685 3 жыл бұрын
John Switzer makes for a great day., Again Sir I thanking for your teaching me and others. Always great videos Sir
@melgross Жыл бұрын
Very interesting. I’ve been thinking of getting one of these things. It’s much larger than I expected.
@NeilGraham.I.M.F 3 жыл бұрын
Thats was very fun and interesting to watch. Look forward to see more induction forging as summer comes. What a great tool to have in the shop. And the end result is much cleaner
@jamesbarisitz4794 3 жыл бұрын
The ability to heat precisely is a big deal when control is important. Worth the price of admission if only for that feature. Cheaper and easier than a torch outfit. 👍
@danbreyfogle8486 3 жыл бұрын
Thanks for the heads up on Combat Abrasives. Being a woodworker I noticed immediately that the sanding products were geared toward metal working (duh I know I saw the advertisement on a blacksmith site). So I sent them a note and within 5 minutes had a reply suggesting I should go to their woodworking sanding products at www.maverickabrasives.com. Great customer service, fair pricing, and reasonable freight terms. So thanks again John, great company and your videos are always great.
@SchysCraftCo. 3 жыл бұрын
Those are very cool and interesting forges. Keep up the great craftsmanship and hard work John. Forge on. Keep making. God bless.
@pjamestx 3 жыл бұрын
Really great to see more info on an induction heater, if I can figure out how to safely get power out to my workshop, this is on the list for sure!
@BlackBearForge 3 жыл бұрын
The availability of good power is certainly an issue
@user-uh8vw4yu6g Ай бұрын
Hi John so glad you dont play music in your video i have bad hearing and cant make out what your saying with back ground noise thanks!
@gurvinderkau1e5w18 3 жыл бұрын
Forge welding was awesome in induction forge. Certainly induction forge got so many benefits. Will be great in cuming summer👍👍🔥🔥🔥
@KingLoopie1 3 жыл бұрын
I can't justify the cost for myself but, MAN! That is COOL! I want one! Leaves on backwards? No problem, just heat the stems and twist them 180 degrees...
@frankgaletzka8477 3 жыл бұрын
Hello John You looking good the spring brings new Energie and new Projekts. I like this induktionforge very much it is clean save and very controlled in the heating process . Thanks for this Video and sharing your Projekt with us All the best take care and happy eastern Yours Frank Galetzka
@jmikronis7376 2 жыл бұрын
Want even tighter control of where the heat is applied? Go to a handheld coil that generates a field as a spot onto the piece.
@tarts9767 3 жыл бұрын
This is jaw dropping 21`st century with top notch blacksmithing skills 👍👍👍😊
@tokolosh11 3 жыл бұрын
Very interesting John, thanks for sharing
@38Maelstorm 3 жыл бұрын
Being an electronics guy, induction forges uses high-frequency AC to induce huge amounts of eddy currents in the metal. The metal is not a perfect conductor, so there is a fair amount of resistance. The current flow against the resistance is what causes it to heat up. It's the same principle as an induction cooktop. But anyways, you make blacksmithing look easy. Good videos and good work.
@davidbarnes6316 3 жыл бұрын
Thanks for sharing your induction forging. Looking forward to more.
@hannemannironworks1651 3 жыл бұрын
That was quite an interesting process and cool to see!
@marcerivest6204 3 жыл бұрын
I can see how this forge is going to get your efficiency up. As usual, love you video and content.
@dalekidd420 3 жыл бұрын
I can see a lot of potential for using the induction forge for small piecework. That ability to take a short, precise heat right where you need it without affecting thin elements mere inches away and not actually "playing with fire" at all in the process is safer and more efficient even than using a torch to achieve the same end.
@PartiLeduc 3 жыл бұрын
I have the exact same unit and I love it!
@thomasarussellsr 3 жыл бұрын
Worked out pretty nicely. Great job showing us the technique.
@wayneheitz8390 3 жыл бұрын
Very nice localized heats. Thank you for sharing
@schmiedepeter3881 3 жыл бұрын
Happy Easter, John. Very interesting video!
@charleszimmermann7784 3 жыл бұрын
Very interesting, it is amazing how fast it heats up the steel. Thanks for the video!
@jerryhuntjj2885 3 жыл бұрын
Very informative video. Happy Easter
@warrenclay7460 3 жыл бұрын
John, you are making me want an induction forge. That is a nice process. Okay, I wanted one for about a year. I just need the space for one. Thanks for the video.
@arrowheadhomestead2207 3 жыл бұрын
Good morning john. Thanks for what you do
@BlackBearForge 3 жыл бұрын
My pleasure!
@grandadz_forge 3 жыл бұрын
What an amazing techno-step. This gizmo is very fun to watch and appears to be a huge asset in it's particular use/function. Cool stuff!
@MinionsSmithy 3 жыл бұрын
Great video, John! That was a great success!
@bradenwherry8371 3 жыл бұрын
Great video you teach me so much and I love the trade
@johnportwood6223 3 жыл бұрын
Good job John happy Easter to you and yours thanks for sharing an God bless
@dondawson1 3 жыл бұрын
Thank you this helps me decide on an induction heater without worry.
@olddawgdreaming5715 3 жыл бұрын
Great video John, really enjoyed the induction forge demonstrations. Great work. Thanks for sharing with us. Fred. 👍👍👏🏻👏🏻🙏🏻🙏🏻
@TheFlypress 2 жыл бұрын
just bought one of theses units ,found this very interesting ,First impressions very similar localised heat has lots of advantages .Thanks for posting .
@lostmypicks 3 жыл бұрын
That's awesome man. More science in a art that has been around since the start of science. Also I'm just making leaf agree leaf building practice. You make it look very easy
@moreybandel5560 3 жыл бұрын
Oh! Love that induction forge! Add that to my wish list! Along with the MZ75 power hammer from Kens Custom Iron! Someday... Maybe. As always, a great video! Thanks John!
@jmikronis7376 2 жыл бұрын
As the work gets thinner, there is less material to interact with the RF field, thus, it is more difficult to heat. Smaller coil, designed to heat that shape of piece. Smaller pieces will heat up very quickly.
@jmikronis7376 2 жыл бұрын
Thanks for making this video! If you made a tube of furnace cement for the coil to operate within, the work would heat up even faster and it would also maintain higher temps. If you would allow the iron to come in contact (for even higher induction field), you won’t short the coil out, because copper is a better electrical conductor. Also, if one places an RF capacitor (designed for high power tank circuits), the coils used would reach even higher power.
@linusyootasteisking 3 жыл бұрын
would love to see a comparison between forge welding with and without any flux in different steels. basically to see how hard is it to get a weld in modern mild and tools steels without any flux
@harrisgraves592 3 жыл бұрын
Good morning Sir, Happy Easter
@ThrashingBuddha 3 жыл бұрын
Very nice video as usual, Sensei! Seeing this video it made me think that it would be nice to have 3 connections on the induction forge for 3 different sized coils at the same time. That way you can choose the coil you need, very easily and is everything super fast!
@h7opolo 10 ай бұрын
if you're concerned with minimizing heatup time, rapidly oscillating the metal in the field will yield enhanced efficiency of induction power.
@mattilindholm1941 3 жыл бұрын
Nice video as usual. 🤘😃🤘
@vincentgolden5352 3 жыл бұрын
Cool stuff very interesting takecare and keep safe
@UsDiYoNa 2 жыл бұрын
That heating speed is just insane
@RonanRochford 3 жыл бұрын
Great video! I have been looking into making coils myself. I cannot wait for the video. I have struggle to find the correct bolts to connect them to the machine.
@warrenmunn3224 3 жыл бұрын
Great job and the induction forge would also have a lot of applications for small multi-use workshops where being able to easily move it out of the way on a single worktable would be an advantage. On a side note, I would be interested to see your take on making something other than knives with Damascus using scraps that are too small for other uses found around the shop. One of the things I've always found interesting is the 'what do you do' with all the small waste metal you generate in the shop
@bl4643 3 жыл бұрын
Thank you
@nitt3rz 3 жыл бұрын
This is really interesting. I have always wondered how blacksmiths would be able to work without burning stuff.
@bc65925 3 жыл бұрын
Very cool indeed, looks like a dark face shield or dark safety glasses would be easier on the eyes. Since welding temps are pretty bright and you have to watch it so close to keep it in the center of the coils that is.
@RayFromTheHayclan 3 жыл бұрын
I really loved this video John! Very interesting demonstration of induction forging. I wonder if you could make a taco shaped coil? Could be easier to slip the piece in rather than through the coil.
@BlackBearForge 3 жыл бұрын
Yes, I have one but didn't show it in this video
@Bear_Feces 3 жыл бұрын
Awesome! I've been looking for a heat source that military housing would let me use! My only concern about induction was it's versatility. Looks like you can still some welding though! I'm considering it more seriously now.
@richardsolomon8076 3 жыл бұрын
Random thought John, could you lay the coil flat then form the flat section into a C shape so the top is open? So it kinda makes the shape of a bottom swag 😎 great test welds ✔👍😎
@BlackBearForge 3 жыл бұрын
Yes, the one I made is open one the side, but its the same idea
@garygraham2974 3 жыл бұрын
That is kool brother
@fatherc0lt 3 жыл бұрын
not to be rude by cussing in your comments. But that induction forge blew my fucking mind. I didnt even know those were a thing. I need one
@drycreek3204 3 жыл бұрын
Try making a cone shaped coil for large & smaller areas.
@C-M-E 2 жыл бұрын
I really like the idea of these things, and I'm sure you probably mention the size restriction (haven't got there yet), but even with the bump in heat speed, I'm in more of a crucible/odd size requirement camp where this wouldn't be particularly useful. I've looked at building a custom model for years but haven't been able to justify the cost versus trucking anthracite coal to my house via the Brown Box Truck Magicians, and it's not particularly convenient trying to get small volumes of anthracite coal to Texas! It's kind of like buying a new truck for me. Old one still works great, and doing the usual maintenance is far easier to swallow versus new truck note.
@hosiercraft9675 3 жыл бұрын
I really enjoy watching your videos on my giant TV, but I have to go to my phone to like and comment. Questions, 1 is the induction forge 120 or 240? 2 I know you probably said in another video, I watch all of them fully, what's the price tag a good again? 3 do you remember me asking multiple times about you trying induction forging? Great to keep seeing your inspiring educational videos. Keep it up. Very happy to see you go way above and beyond the 1K subscriber mark Thanks again John.
@BlackBearForge 3 жыл бұрын
240V 30A
@Zogg1281 3 жыл бұрын
Do you think you could make a cone shaped coil? With a cone you could feed smaller matterial deeper into the cone (when you first started the small bar), then as the leaf is formed you don't put it as deep in the cone and it still heats your material without having to keep changing coils. A slightly flattened cone might work the best for that..... so basically a mix of the different size and shape coils you used all mixed into one. You could even have a coil for doing that leaf if you were doing a lot of them...... a bit like production runs of your leaf hold fasts. I would love to know if the slightly flatted cone shaped coil would work........ please? 😅 That is an awesome piece of kit! 👍👍👍👍👍
@BlackBearForge 3 жыл бұрын
While there are lots of options in coils, there are limits to how large they can be and still work properly. Overly complex designs might fall short due to the length of tubing in the coil. But there are still lots of proven designs I haven't tried yet so small egg shaped and cone shaped coils are likely to see some use.
@hugonilsson6067 3 жыл бұрын
I covered my coil in a thin layer of chimney sealant, you might lose a few millimeters of space but it still means that you can fit bigger workpeaces in there without shorting the coil
@rsteen78 3 жыл бұрын
Thanks a lot! I have been interested in an induction forge for a long time. The ability to get a very controlled heat and just having to flip a switch to get started is very tempting.
@Whipple1 3 жыл бұрын
Happy Easter, John! Whipple
@jamesehrhart9364 3 жыл бұрын
I have been experimenting mentally with different types of induction forging. Thank you for this. Have you noticed a difference in the steel/metal between a homogeneous heating (induction) vs a gradient heating? Induction heats the metal consistently throughout the geometry vs outside in (and reverse). It seems in my mind this would lead to much easier welding and less inclusions and cracks. It also really seems to open up different metal combos you could do.
@dgtlmoon 3 жыл бұрын
with a couple of small ball-valves, you could easily have a selection of loops :)
@HWPcville 3 жыл бұрын
I'm sure you're aware of this technique but I'll mention it. When curving your leaf, hammering on a stump end will support and allow it to curve without any unwanted scratches. As its used the stump will develop divots (from burning) that can match several different sized leaves. I like the induction heater. Can you make square shaped coils that are wide across but more narrow in thickness that will accept leave shaped objects? Thanks for posting. UPDATE Well I guess I should have watched the whole video before asking my question. lol
@521cjb 3 жыл бұрын
Gasket material for the doors of wood stoves is often made as a hollow tube of woven fabric, could possibly slip that over tubing for handmade coils instead of the ceramic that flakes off . And I wonder if a small platform close under the coil would block convection airflow and allow higher temps with less cooling ?
@BlackBearForge 3 жыл бұрын
Worth taking a look at
@1noryb 3 жыл бұрын
Very cool use of electrical energy! I wonder if a properly prepared coil would allow controlling the depth of heat in larger objects; for instance to harden or temper an anvil face.
@BlackBearForge 3 жыл бұрын
Probably, but it would require a much larger unit to run a coil that large. Our local steel mill now uses induction heating for production
@frenchcreekvalley 2 жыл бұрын
I mess around with much smaller induction heaters that don't really work well for most forging. But---- I have done some testing of pancake coils to heat sheet metal. So, I wonder if pancake coils might be a useful answer with your much larger heater, for dealing with forge welding such as you did here. I have several videos about my pancake coil experiments, but I won't attempt to hijack your video with links. You might also try U-shaped coils.
@BlackBearForge 2 жыл бұрын
I have a pancake coil, but it doesn't seem very effective on anything more than sheet.
@robertyoung5748 2 жыл бұрын
That was great you need a camera man.
@tropifiori 3 жыл бұрын
I bet you could skewer and heat up a kielbasa for lunch time!
@BlackBearForge 3 жыл бұрын
It would cook by heating the skewer on the inside.
@rogerbird6151 3 жыл бұрын
I am trying to understand the principle of the induction method. What frequency is used and what is the optimum number of turns used in the coil? In real terms what power is drawn from the mains power? I really enjoy your videos! Thank you so much.
@BlackBearForge 3 жыл бұрын
I wish I could explain the science behind it, but it seems a bit like magic to me. As far as power its 240V on a 30A breaker and only draws power when heating, which is a lot less of the time in the shop then we tend to think it is.
@sickboymech92 3 жыл бұрын
Induction works with high frequency. I would bet it develops a resonance through that copper. Probably on some micro level it looks like the tacoma narrow bridge collapse.
@user-ii8dz4vu7n 3 жыл бұрын
You can actually make multi-loop/heat zone coils for production. I also have some books and papers on induction heating and coil design/fabrication I'd love to share if you're interested!
@threeriversforge1997 3 жыл бұрын
Very nice! That was almost too convenient! Will the taco coils be as fast to heat to welding temps, or do you think you lose something because there isn't the full surround?
@BlackBearForge 3 жыл бұрын
They will be more convenient but won't heat as fast
@jeanyvessamson6663 3 жыл бұрын
Thank-you for the great video! I have a question: What is the energy consumption with an indution forge? Thank-you and have a good day...
@BlackBearForge 3 жыл бұрын
240V 30A
@00_negative 3 жыл бұрын
You need a clam shell coil. Loads theough the front but it takes a little longer to heat
@BlackBearForge 3 жыл бұрын
Already done
@douglasfathers4848 3 жыл бұрын
Happy Easter to you and jennet. That is a grate piece of equipment mate. how does the running cost compeer to the coil and gas forge. :)
@BlackBearForge 3 жыл бұрын
I think it will be less than propane and lots less than coal, in our area.
@billcottrell3987 3 жыл бұрын
Hint: If you manage to pop a hole in a coil JB Weld fixes it up.
@BlackBearForge 3 жыл бұрын
Great tip
@TheTrashologist 3 жыл бұрын
I wonder if you could make a coil that was narrow on one end and larger at the other, That way you could avoid having to change coils while working on something like this.
@BlackBearForge 3 жыл бұрын
I have seen them, but haven't made one yet
@piedmonitor 3 жыл бұрын
If you touch the metal to the coil is there any danger?
@syrdavidar 3 жыл бұрын
John is there any reason that you went with US Solid? I absolutely love the possibilities this forge holds..
@BlackBearForge 3 жыл бұрын
Only because another local smith had been in contact with them and knew when they had some available
@destinationunknown7857 3 жыл бұрын
Pretty cool, how long does it take to warm up a hotdog? Asking for a friend lol I actually have a question about mending a anvil face, someone prior to me owning the anvil cut the face of it by the round hole on the tail of it. It's about 1.5 inches long. About 1/2 inch deep on the edge of the hole to about a 1/8th inch deep out into the face. What would be a way to fix this proper? Thank you for any advice..really enjoy your videos
@markmoreno7295 3 жыл бұрын
Really interesting. So do the coils generate heat when on, but no metal is in them? Or do they only heat up when metal is in them?
@jimstein8249 3 жыл бұрын
It uses what is known as RF Induction. If only heats the metal object inserted into the magnetic field created within or near the coil.
@JanEringa8k 3 жыл бұрын
Are these issues with stress build up related to the very localised heating? I guess heating with a torch has the same issue?
@bwhiped8508 3 жыл бұрын
Was wondering if you are using the 220v or 110v version. Im very intrigued after watching your videos. Thanks
@BlackBearForge 3 жыл бұрын
220V on a 30 amp breaker
@dadegroot 3 жыл бұрын
Does it have to be a closed loop coil, or could you do a C shape type thing? Just wondering about tricky shapes pieces and fitting through a closed loop.
@thestonefairy 3 жыл бұрын
Hi John, that looks so fun is it 110V or 220V? thanks.
@BlackBearForge 3 жыл бұрын
220V 30A
@thestonefairy 3 жыл бұрын
@@BlackBearForge Thanks John love your show so much!
@tenchford 3 жыл бұрын
I was wondering about oxygen getting to the metal. It looks like there would be more oxygen getting to the metal than with a coal forge. Does it produce more scale? or make the weld harder to stick?
@BlackBearForge 3 жыл бұрын
It seems likely, but I don't notice that the scale is very bad. The increased air flow in both coal and gas forges might be worse. Of course flux helps keep oxidation away if its an issue
@mattwyeth3156 3 жыл бұрын
Hi i have a question about a project that im thinking of doing as i build myself a new forge shed im wanting to forge the door fittings im probably biting off more than i can do with my skill set but i want to try my problem is im going to use the sliding barn door and i can't seem to find a video anywhere on KZfaq on how to go about hand forging the rollers and their fittings is this possible for me to be able to accomplish and how do i go about it . Thank you for any help you may be able to provide
@fouledanchorforge5223 3 жыл бұрын
How is it money wise on power consumption veres propane or coal.
@jimstein8249 3 жыл бұрын
Does it take as much electrical energy as a welder, or a space heater?
@BlackBearForge 3 жыл бұрын
Probably less. It only needs full power when heating, Just sitting while your at the anvil or doing something else it uses very little power
@Aminuts2009 3 жыл бұрын
Those are very cheap to run. I remember Grant Sarver using them for Off Center Tongs.
@MinionsSmithy 3 жыл бұрын
Hello, John! I just ordered this same induction forge. Can you tell me what kind of cooling setup you are using? I was thinking a submersible pond pump in a 5 gallon bucket of water would work. Your thoughts or suggestions?
@BlackBearForge 3 жыл бұрын
I am using a TIG cooling unit that meets the manufactures specs for water flow
@TomBaugh 2 жыл бұрын
@@BlackBearForge John re: spec's "Flow Rate of Cooling Water 7.5 L/Min" I wonder what volume of water you are using in your TIG unit and whether the water got hot due to volume of water? Most/Many TIG cooler units have about 2 gallon capacity. If yours is in this category, do you think it is enough? Or do you have a significantly larger water capacity? Seems like similar situation to quench oil capacity.. Too little oil heats up fast. I just ordered the US Solid and trying to decide on cooler. thanks for your advice.
@brianfalls5894 3 жыл бұрын
John, I like that induction forge but I have a question, are you able to install larger diameter loops on that forge? Right now it looks pretty limited
@rsteen78 3 жыл бұрын
You can make coils of a lot of different sizes and shapes. That particular induction forge can handle steel about an inch thick.
@brianfalls5894 3 жыл бұрын
@@rsteen78 Cool! 1 inch thick is pretty thick steel. I like how it heated up that steel in next to no time.
@bobvines00 3 жыл бұрын
John, does the induction forge somehow "sense" when metal is in the coil to give full power or does it run at full power even when you are at the anvil between heatings? That induction forge certainly looks useful once you've made the extra coils needed for whatever work you're doing.
@Zonkotron 3 жыл бұрын
It probably does and even if it didn't, the way this kind of circuitry works, it only consumes the power going into the workpice plus the switching and conduction losses of the power transistors, the work coil and the matching network. In simple words - even if it does not throttle down automatically, it will only use a fraction of the power if unloaded. But something like this will be controlled by a fast microcontroller to do all the frequency tracking and monitoring to get optimal power transfer and prevent damage in case of overloaded or unloaded condition. It is smart enough to do all sorts of things. Source: I dont own one but i work with power electronics for a living and will probably build myself one at some point ;)
@BlackBearForge 3 жыл бұрын
It doesn't have any sensors nor does it stay on. It has a timer so you can set a heat time and current or it can be controlled with a foot pedal. I'm using the foot pedal, so its only on while I'm actually taking a heat.
@Zonkotron 3 жыл бұрын
@@BlackBearForge Good to know. That is certainly the easiest solution for the manufacturer and the user also has full control (in the sense that an automatic regulator might not sense a tiny corner sticking through the coil etc.) Wen i get around to looking into the matter, i shall include a foot pedal
@jakobebryant8189 3 жыл бұрын
How are you cooling it? What do you use?
@BlackBearForge 3 жыл бұрын
TIG torch cooler
@duanecjohnson 3 жыл бұрын
Hi John; Did I see the tong jaws get to red heat when you did the forge weld? It seemed they were hotter than the material they were holding. Very interesting! redrok
@BlackBearForge 3 жыл бұрын
No, it must be a reflection or optical illusion. Anything outside the coils doesn't get very hot, which is a real advantage to this type of forge welding
@gentlebear21713 3 жыл бұрын
How much current and Watts are you using per heat? When you don't have anything in the coils, is the induction heater still using power? The welder is obviously faster than other forging techniques in heating your material, but how long do you think it will take for your overall savings (in efficiency) for you to get to the break even point in your investment?
@BlackBearForge 3 жыл бұрын
240 volts at 30amps. Thats about 7KW. Hard to say about breaking even on efficiency, but I suspect the operating costs will be much less than I pay for propane and better yet when compared to coal.
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