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Flare connections require that the end of a tubing section be spread outward in a bell shape using a flare tool. Only soft copper can be flared. A flare nut then compresses this bell-shaped end onto a male fitting. Flare connections are a labor-intensive method of making connections but are quite reliable over the course of many years.
The tool used to flare tubing consists of a die that grips the tube, and either a mandrel or rolling cone is forced into the end of the tube to form the flare by cold working. The most common flare fitting standards in use today are the 45° SAE flare [2] [3],the 37° JIC flare, and the 37° AN flare.
The use of flux or self-fluxing material is required to prevent oxidation. Torch brazing of copper can be done without the use of flux if it is brazed with a torch using oxygen and hydrogen gas, rather than oxygen and other flammable gases. Machine torch brazing is commonly used where a repetitive braze operation is being carried out.
Copper alloys are metal alloys that have copper as their principal component. They have high resistance against corrosion . Of the large number of different types, the best known traditional types are bronze , where tin is a significant addition, and brass , using zinc instead.
Tools. Tools. move to sidebar hide. Actions Read; Edit; View history; ... Following is a list of minerals that serve as copper ores in the copper mining process: [1 ...
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Medium flow. Flow point 718 °C. Very fluid, can penetrate narrow gaps. For copper, copper alloys, brass, bronze. Primarily for copper-to-copper. Can be used also on silver, tungsten and molybdenum. Low vibration resistance. Light copper color. Maximum service temperature 149 °C (intermittently 204 °C). 91.5: 2: 6.5: Cu 91.7 Ag 1.5 P 6.8: Cu ...
Copper can be lost from the matte in three ways: as cuprous oxide (Cu 2 O) dissolved in the slag, [37] as sulfide copper dissolved in the slag [38] or as tiny droplets (or prills) of matte suspended in the slag. [39] [40] The amount of copper lost as oxide copper increases as the oxygen potential of the slag increases. [40]