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Can you overheat copper pipe when soldering?

Can you overheat copper pipe when soldering?

Overheating is a major problem when brazing or soldering copper pipe because the flux will burn (become oxidized), stop working, and become a barrier to tinning. In addition, a heavy oxide can be formed on the pipe itself, preventing a bond from forming between the filler metal and the pipe surface.

Should you use flux when soldering copper pipe?

Flux is a chemical which helps you solder. Flux prevents the copper from oxidizing as you heat the copper with the torch. In addition, it prevents the pipe from oxidizing as you heat it. You can solder without flux, but it is really difficult!

Why does my solder not stick?

A classic reason solder won’t stick to something is because you’re not getting it hot enough. My interns come to me with this problem all the time. Make sure the tip of the iron is nice and shiny. Touch some solder on it, and it should melt almost instantly.

What is the best solder to use on copper pipes?

If you’re soldering drainage pipe you can use 50/50 solder, but if it’s used for drinking water you need the 95/5 type. The 50/50 contains lead and other things that can leach into the water, but the other doesn’t. The other difference is the melting point. 50/50 requires less heat than 95/5.

Do you need special solder for copper?

Learn the different types of copper pipe as you prepare. As you’ll see, you don’t need special skills for soldering copper pipe fittings successfully. You can easily solder a leakfree copper solder joint on the first try—but you can also make mistakes.

Is soldering copper dangerous?

When solder wire is heated, fumes are produced that contain various chemicals. Breathing of these fumes can cause asthma or aggravate existing respiratory conditions. The fumes can also cause irritation of the upper respiratory tract, eyes and skin.

Why do plumbers use flux?

In plumbing, flux is a compound used as part of soldering a pipe joint. Crucially when heated, the acidic flux draws molten solder deep into the cracks of the joint and forms a clean bond with the metal. Flux is an essential part of allowing the solder to flow evenly and fully around a well soldered joint.

Can silver solder be used on copper?

The amount of zinc in a metal lowers the melting point, that’s why brass melts at a lower temperature than pure copper. As you can see in the chart above, you can use any silver solder on copper or brass metal, but solder flow points vary between vendors so always check the flow points of the solders you choose to use.

Does solder stick without flux?

Yes, you can solder without flux. While it is helpful in the process of soldering as the flux helps break down the oxides on the metal, it is not needed. Also, most solder nowadays come with a rosin core which does the job of flux helping breaking down oxides.

What’s the best way to solder copper pipes?

Soldering vertical copper pipe shouldn’t be too different from working horizontally. If the joint and tip are hot enough, the solder should flow right in. Heat the middle of the fitting and apply the solder as soon as it starts to melt. Solder the bottom joint first and work your way up. The heated solder will flow around the joint.

What’s the difference between flux and solder on copper pipes?

Solder: Also called soldering wire, this is what melts and flows into the joint between two pieces of copper pipe. It comes on a spool. Flux: Flux is another term for soldering paste. It protects the pipe fitting from the flame.

Why does solder take so long when it goes wrong?

Soldering is a crucial part of metalsmithing, when it goes wrong the jewelry piece takes way longer than planned. Being comfortable and confident with soldering comes with experience, but everyone gets stuck from time to time. This read is a good reminder of what needs to be improved on when soldering becomes a nightmare, we have all been there.

Do you put solder around the bottom of a coupling?

Apply solder all around the bottom seam. Solder around the coupling’s higher seam in the same way. Use a rag to carefully wipe away all solder drips and flux from the joint.

Soldering vertical copper pipe shouldn’t be too different from working horizontally. If the joint and tip are hot enough, the solder should flow right in. Heat the middle of the fitting and apply the solder as soon as it starts to melt. Solder the bottom joint first and work your way up. The heated solder will flow around the joint.

Solder: Also called soldering wire, this is what melts and flows into the joint between two pieces of copper pipe. It comes on a spool. Flux: Flux is another term for soldering paste. It protects the pipe fitting from the flame.

Is there any reason not to use an electrical solder for?

Electrical solder is generally hollow, with a core made of a flux intended to solder copper wires. This flux is not made for copper water pipes. You will want to use a separate paste flux especially made for sweating copper water pipe (and a small brush to apply it). Some electrical solders contain an amount of lead. Pl… Loading…

What kind of heat do you use to desolder copper?

A propane torch is the most convenient type of heat to use when desoldering copper pipes. Before touching any pipe, it’s important to shut off the main water valve and drain out water in the pipes so that water does not leak out during the process of desoldering. Applying an adequate amount of heat can melt the solder without damaging the pipe.