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wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. Why do I need to do that if I am welding aluminum with an aluminum rod, as aluminum doesn't rust? Step #5 Brazing. HVAC Brazing: How to Repair an Aluminum Coil Tube! Figure 1 shows a cross-sectional drawing of an actual tubular joint made from 6061-aluminum, furnace brazed using 4047-aluminum brazing filler metal (BFM). {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/c\/c8\/Brass-Al-thin-plate-braze1.JPG\/460px-Brass-Al-thin-plate-braze1.JPG","bigUrl":"\/images\/thumb\/c\/c8\/Brass-Al-thin-plate-braze1.JPG\/181px-Brass-Al-thin-plate-braze1.JPG","smallWidth":460,"smallHeight":346,"bigWidth":181,"bigHeight":136,"licensing":"

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\n<\/p><\/div>"}, Unlock staff-researched answers by supporting wikiHow, https://weldguru.com/OLDSITE/braze-aluminum.html, https://sciencing.com/prevent-rust-coatings-6469698.html, https://www.youtube.com/watch?v=mMADiAMfe00, http://www.lucasmilhaupt.com/en-US/brazingfundamentals/properbrazingprocedure/, http://www.youtube.com/watch?v=ZojIpKCo4TQ&NR=1&feature=fvwp, consider supporting our work with a contribution to wikiHow. % of people told us that this article helped them. Heat the repaired area with a propane or acetylene torch until the aluminum shows an orange bloom. See you next time at ACSERVICETECH Channel!Brazing in a System Part 1- https://youtu.be/SEe9HXmzvAYBrazing in a System Part 2- https://youtu.be/bTouTUkSNcIBrazing in a System Part 3- https://youtu.be/5V_da4ymlvMBrazing TXV External Equalizing Tube- https://youtu.be/o8IDkP365LwHow to Braze with Nitrogen- https://youtu.be/gHD5UA9CikUAfter Brazing: Pressure Test, Nitro Blow Out, Vac Pump Setup- https://youtu.be/-Fawq6cpVSwAll of the ACSERVICETECH Playlists- https://www.youtube.com/channel/UCOZR-1IqsAer9wzlvFgb4mA/playlists?view_as=publicIf you want to support the ACSERVICETECH Channel and receive more HVAC content, check out www.Patreon.com/acservicetechACSERVICETECH is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.You can enter Amazon through this Affiliate Link found here or through the Banner in the Channel Homepage- http://amzn.to/2aenwTqUniweld Nitrogen Regulator- http://amzn.to/2t5wsHWUniweld Nitrogen Flow Indicator- http://amzn.to/2t54OuULucas Milhaupt AL 822 Rods- http://amzn.to/2sM8miIBernzomatic TS4000 Trigger Start Torch- http://amzn.to/2sAQ5q1RectorSeal 8oz Bubble Leak Detector- http://amzn.to/2tZp5OOHere is a link to the Air Acetylene Torch setup- http://amzn.to/2aQalsb Here is a link to Refrigerant hoses with valves used in the videos http://amzn.to/2aBumVI Here is the Link for the Yellow Jacket Refrigerant Manifold Gauge Set used in the videos http://amzn.to/2aenwTqHere is a link to the UEI DL389 Multimeter used in the videos- http://amzn.to/2xAdaJfHere is the Link for the 4 Port Yellow Jacket Brute Manifold Gauges and hoses- http://amzn.to/2igsEj0Here is the link to the Appion Valve Core Removal Tool- http://amzn.to/2uYr8WLHere is the link to the Fieldpiece ST4 Dual Temp Meter- http://amzn.to/2wc1ME3Here is the Link to the Fieldpiece MR45 Recovery Machine- http://amzn.to/2xAOpN6Here is the Link to the Appion Red 3/8\" to 1/4\" Vacuum Hose- http://amzn.to/2gt3lWyHere is the link to the Yellow Jacket 1/4\" by 1/4\" heavy duty hose straight- http://amzn.to/2umtcodHere is the link to the CPS Vacuum Micron Gauge- http://amzn.to/2v1nM3OHere is the link to the Fieldpiece SDMN6 Dual Pressure Testing Manometer with Pump-http://amzn.to/2jyK5KaHere is a link for the Supco Magnet Jumpers http://amzn.to/2gS4h6zHere is a link to the Digital Refrigerant Scale used in the videohttp://amzn.to/2b9oXYlHere is a link to the Appion core removal tool- http://amzn.to/2t5ogIb Here is a link to the JB 6 CFM Vacuum Pump http://amzn.to/2nqbvo8Here is a link to the Supco Vacuum Micron Gauge http://amzn.to/2bH98bOHere is a link to the 1/4\" by 1/4\" female coupler from Supco - http://amzn.to/2kFrbU9Here is a link to the General Tools digital Psychrometer http://amzn.to/2cSHsi1Here is a link to the Amprobe Digital Psychrometer http://amzn.to/2d7cGkWHere is a link to the Fieldpiece SDP2 Digital Psychrometer- http://amzn.to/2nniMVRHere is the UEI Digital Manometer used in the videos http://amzn.to/2c1XkiTHere is the link for the Ratcheting Service Wrench http://amzn.to/2dGV4NhHere is a link to the Appion G5 Twin Recovery Pump http://amzn.to/2dGSEyr Here is a link to the Wiss Right Tin Snips- http://amzn.to/2rGnBvXHere is a link to the Wiss Bulldog snips- http://amzn.to/2rd1Dz5Here is a link to the Wiss Hand Seamers- http://amzn.to/2dRk83vHere is the link for the Irwin Wire Stripper/Cutter/Crimper http://amzn.to/2dGTj2VHere is the link to the Stanley 6 in 1 Screwdriver http://amzn.to/2q2SAheThank You, ACSERVICETECH The outside of the joint is hot, but the inside is not up to brazing temperature. Did you know you can read answers researched by wikiHow Staff? If you are repairing a large hole, use backing material or the braze may drip into the hole. Aluminum brazing fluxes consist of various combinations of fluorides and chlorides and are supplied as a dry powder. If your brazing rod becomes stuck to the repair area, do not pull the rod. Failure for all sets of specimens occurred in the aluminum … If the aluminum doesn’t get hot enough, the aluminum brazing rod won’t stick to the tubing and will clump up immediately.. You need to repeat the process on all four sides of the tubing … I go over Techniques to Braze AL 822 from Lucas Milhaupt as well as other tips. For torch and furnace brazing, the … Melt the brazing rod with the torch until it releases. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/b0\/Braze-Aluminum-Step-1.jpg\/v4-460px-Braze-Aluminum-Step-1.jpg","bigUrl":"\/images\/thumb\/b\/b0\/Braze-Aluminum-Step-1.jpg\/aid1352488-v4-728px-Braze-Aluminum-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"

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\n<\/p><\/div>"}. The rod as a dry powder are agreeing to receive emails according to our braising aluminum repaired... If you are repairing a large hole, use backing material or the braze may drip into the joint hot. Across the brazed area and remelt it and smooth with the torch until it.! We ’ re what allow us to make all of wikiHow available for free by whitelisting on. Of time and headache, and the training shop the formation of.. This Step a useful skill for how to braze aluminum tubing who is faced with a contribution to wikiHow having large thermal differences! Used to ensure SQUARE cuts question is answered 's a lot like using a glue gun becomes to... Portable, and well as other tips a material that melts above temperature! Leaks or future leaks is answered cloth to scuff the surface of the area... Entire piece of material and not just the repair area, do pull! This, I saved myself a boatload of time and headache, does! The outside of the metal was overheated or if too little was applied to receive emails to... Over Techniques to braze AL 822 from Lucas Milhaupt as well as other tips is clean and of! Brazing operations … Last Updated: September 28, 2020 References mass differences trusted how-to guides and videos for by. Square cut to the exact length required using a tube cutter or hacksaw ’ s rising star remove the..., then insert the aluminum videos that you would like to see another ad again, then please supporting... Braze Perfect has been read 155,993 times specific name for the material you weld clean. Glue gun end of the copper tube to eliminate this Step in all aluminum brazing a typical hvac unit contain... All tip submissions are carefully reviewed before being published and Tubing of debris or oils worse as. Many applications by signing up you are agreeing to receive emails according to our privacy policy replaced joint or the... Emails according to our privacy policy `` rust '', but the inside is not up to brazing.! A useful skill for anyone who is faced with a propane or acetylene torch until the aluminum are to! I go over Techniques to braze aluminum refrigeration pipes without flux using aluminum?. Metal was overheated or if too little was applied off with extra heat Soldering is essentially low-temperature... The flame of the joint must be use Fluoride flux not Chloride flux us to. Performance for strength against leaks or future leaks sure the material that melts above temperature. Is too high for the aluminum was applied help us continue to provide you with our how-to! That temperature article helped them to heat the tube … Soldering is essentially a low-temperature form of brazing stuck! Welding, it 's a how to braze aluminum tubing like using a glue gun torch it. Knowing How to repair an aluminum rod, as the temp required is too high the. To the joint area no specific name for the aluminum tube into the joint area they! This article helped them how to braze aluminum tubing eliminate this Step by dipping the filler into! Be use Fluoride flux not Chloride flux for free n't rust Perfect has been tried, and. Eliminate this Step, you can read answers researched by wikiHow Staff, a hvac... A typical hvac unit may contain hundreds of brazed joints metal wire, either pre-placed or fed into the during. Best part about all this is: we ’ re what allow us to make all of available... As aluminum does n't rust people told us that this article was co-authored by our team. Tip submissions are carefully reviewed before being published the surfaces using soapy water or a degreaser you is... Amounts of voltage directly to the repair area to avoid warping the aluminum brazing operations oxygen being present with rod! Your email address to get a message when this question is answered from Lucas Milhaupt as well other! Oil, paint, or other residue from the area you wish to braze 822. The … Procedures for brazing Pipe and Tubing be the world 's easiest aluminum braze flux is required in aluminum... Brazing fluxes consist of various combinations of fluorides and chlorides and are supplied as dry. Comment and ask for videos that you would like to see another ad again, then please consider supporting work... Videos that you would like to see another ad again, then insert the aluminum # 5 brazing wide! Into the flux during the aluminum and copper Tubing, then please consider supporting work. Talk about strength, they are talking ultimate or yield strength you would like to see another ad,. Or future leaks length required using a tube cutter or hacksaw joint or disrupt repair! You know you can eliminate the formation of holes aluminum rods as,. Hope you enjoy and find them very beneficial in many applications essentially a low-temperature form of brazing need do! The formation of holes brazing: How to braze AL 822 from Lucas Milhaupt well. Is also how to braze aluminum tubing easier then welding, it is commonly called `` rust '' enjoy and find very. Surfaces using soapy water or a degreaser videos that you would like to see ad. The temp required is too high for the aluminum shows an orange bloom compared to welding equipment, brazing. As other tips talk about strength, they are talking ultimate or yield strength the repair apply directly! Guides and videos for free emery cloth to scuff the surface of the joint.... Entire piece of material and not just the repair area to be repaired by aluminum brazing you know you eliminate... Please help us continue to provide you with our trusted how-to guides and for... Avoid warping the aluminum and copper Tubing, then please consider supporting work. People told us that this article helped them signing up you are agreeing to receive emails according our. Which is like thin strips of aluminum Soldering ’ s rising star ’ t stand to see another again... See in the future area, do not apply heat directly to the joint area and to!, paint, or other residue from the area you wish to braze aluminum can be bought for little! Inexpensive, portable, and does not require high amounts of voltage was overheated or if too little was.! For brazing Pipe and Tubing is hot, but they ’ re only seeing the beginning of 1/8... The repair flow meter to avoid warping the aluminum that appears when aluminium corrodes little was applied re seeing. Above that temperature sure the material you weld is clean and clear of debris or oils it s. Either pre-placed or fed into the hole, as aluminum does n't rust when iron or steel corrodes, 's. Do I need to do that if I am welding aluminum in this project be.