Brazing Copper To Steel Hvac

Thank for you. Lap joints work best with an annealed copper brazed joint. My paperback and e book.

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Step by step tutorial on how to braze copper pipe like a pro.

Brazing copper to steel hvac.

What is the proper solder brazing rod and flux to use when making this connection. The braze is what is melted by the torch to join two metals. Both oxygen free and oxygen bearing copper can be used for brazing work. I see the discharge line is steel brazed or soldered to the copper compressor discharge fitting.

Hot tips for copper brazing. I also give some tips on how to braze a copper fitting and ref. The clearance for allowing filler metal penetration in small to medium diameter pipes should not be more than 0 002 to 0 003 inches. The only real reason to use lower silver levels is the cost and the difference can have many techs and owners wondering what the difference is.

The most common rods used for typical hvac brazing are 0 5 and 15 with several other levels mixed in there. In this video i go over the oxy acetylene torch tips i use along with the gas pressures i use. I m a residential hvac guy. One of my friends owns a motel and asked me to replace the compressor in his pepsi machine for him.

For joining copper lines we usually use brazing rods that are made out of a copper phosphorous combination. Brazing rods look like straightened metal coat hangers and like solder they become stronger as the percentage of silver they contain increases. The most commonly used brazing filler metal types used to join copper tube and fittings fall into two distinct categories. The percentage is the percentage of silver content in the rod.

The brazing temperatures for most of the brazing alloys used to joint copper piping systems bcup and bag alloys see below are roughly between 1 150 f 621 c and 1 550 f 843 c. I hear standard 15 silverphos is not a good choice. We will be brazing or silver soldering refrigerant a c lines for hvac equipment.