Braze or Solder Anything in HVAC/R
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- čas přidán 9. 07. 2024
- Want to know how to braze or solder anything in HVAC/R? Sal with Products by Pros joins Bryan to show off the new SW-HVAK05 and SW-HVAK15 kits from Solderweld and all the brazing types they can do, including copper to copper, aluminum, copper to aluminum, steel to copper, and much more.
The Solderweld kits themselves keep the brazing rods and fluxes nice, dry, and free of damage. Brushes come with the kits, which can help with cleaning the base metals before brazing and wiping flux off after brazing. The SW-HVAK05 comes with 5% Sil-Sol, Alloy-Sol with flux for aluminum, and Al-Cop braze. Silver in the Sil-Sol rods helps the solder flow out and flex a bit more, so higher silver content is desirable (but expensive), so the 5% Sil-Sol has 10% less silver than 15% Sil-Sol and won't hold up to vibration as well as the 15%. The rod tubes also come with screw-tops, meaning that it's harder to spill them and contaminate them with moisture.
The 56% Sil-Sol is a premium silver alloy and works very well for dissimilar metals. It's pretty expensive and is not typically used on everyday HVAC jobs.
One of the most common brazing mistakes is unevenly and insufficiently heating the base metal. Many technicians are afraid of burning through the base metal, so they move the torch too much and are afraid of cherry red copper; however, dark cherry red is the desired color for brazing. Moving the torch in and out is the best practice, not zigzagging and waving the torch all over the copper. The most effective brazing jobs get the base metal hot enough to pull the alloy into the joint via capillary action.
When working with steel and copper, you have to be mindful of their properties. Steel can absorb more heat than copper, so if you concentrate on getting the steel to the right temperature, then you'll get the copper to the right temperature without burning through it.
The aluminum soldering rods come with flux cores. Although many techs like to stay away from flux whenever possible, the flux is very good for working on dirty aluminum, especially on microchannel coils. The soldering rods make very solid patches in the hands of experienced technicians.
Al-Cop Braze rods have non-corrosive flux inside the channels and are quite flexible. You would just place the rod flux-side-down on the heated material. Once the flux settles on the metal, you can apply the rod. Al-Cop works on copper, aluminum, and copper to aluminum joints.
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Don't be nervous Sal we all tech love new stuff
I found this video to be very informative with regards to the use of a lot more equipment with aluminum in them and aluminum to copper joints.
You guys are very knowledgeable thank you very much for the knowledge kudos
Can you do a video of a conversion from a ecm to a standard blower motor?
Nice job and video
Great information....
I got one of those solderweld kits coming in, pretty pump to use it have seen/heard nothing but solid raves on there products specially from akhvac. I really like the aluminum rods microchannels on new equipment now, best start to get the hang of it when the time comes to repair.
How it worked out ?
@@belzi1 have only used copper to aluminum so far so good. Have gone through the flux rods for steel to copper few times. Great soldering products. Don’t approve on there heat block playdoe
@@hvacslayer2929 thanks for the response
Hi it's pinkas
I would like to know what should I use I'm trying to braze copper to stainless steel
I have a small crack in the liquid line at the bend just above the compressor. tight spot, wondering if I should use 15% or higher and also a jewelers torch so I can avoid over heating / damaging the compressor? Did this happen because the 3 compressor anchor bolts were tightened down too much causing too much vibration on the liquid line.
U ain't gonna damage that compressor, especially if it's just the liquid line.... shiiiiit I have fixed the suction at the compressor and I'm almost 100% sure that's hard drawn at the compressor (hard drone)...We use hard drawn in the industrial field more than the others so maybe it's more my technique that allows me to execute certain fixes most others may shy from.... not trying to boast or anything just trying to lead by example....don't think can't, think CAN man.... Just try being a refrigerated refrigeration technician....If u catch my drift....It helped me to be cool ya know and i's b's trying y'all, i means i's a be's a really really trying yo!!
Where do you buy this kit. The link is bad
With brazing compressor to section and discharge line (stainless steel to copper) should use 15 percent or 56 percent? Thanks.
Either or I would say
hey there hvac world but does anyone know if 15%has a shelf life or if kept out for a certain time will ruin the integrity of the rod
I guess it might tarnish but just clean it up and use it
Web site not working
Do u have a Amazon link?
TruTech Tools sells all HVAC related SolderWeld products: www.trutechtools.com/SolderWeld
I just use staybrite 8
56% silver alloy is not mandatory to join dissimilar metals. 35% silver alloy is enough
Doesn’t matter what it looks like, it matters if it doesn’t leak and holds.
A booger weld or solder joint is indication of a poor joint.
@@raymondlee3414 It’s what I call a cold joint. Rod is melted by the torch, not the pipe.
Stop defending "only two rods in pack" haaa
Ok.
You didn’t let the guy talk
Your typical 5% solder has a tensile strength of 14,000 psi.
Tensile strength isn’t the issue. It’s getting the solder applied properly. 15% is more ductile and it flows better therefore increasing the chances that the proper bond is made
Use it all the time never had leaks. Stabrite8
U want it red just don't deform it or worse blow it out, the high heat is why we use oxy/acetyl and 15 so broadly in HVAC/R because we ain't out here sanding, cleaning, fluxing, flux that.... plus the heat is how u get the silver to mercurize and suck in the joint.... basically u want that rod to melt like an ice cube would almost.... so so so, easy to braze man....so easy....
This is a really bad video. For solder: Do you need heat blocking compound? What about nitrogen?
Sal is a snake