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The difference between the welding step copper tube is a common copper electrode on the choice and use of flux. Then how much do you know about the brazing principle of copper tube, the following is a brief introduction of the principle of the purple copper brazing principle.

Copper brazing requires 2 conditions that lead solder wetting and solder wick. What is the solder wetting, liquid and solid material is the material to contact together mutual adhesion phenomenon. Solder does not occur mother of wetting phenomena is molten solder can not be stained with a solid surface material, this situation, joint gap filled not with. If the melting of the liquid solder can be stained with the solid state of the parent material surface, such a situation will happen, and the gap can be filled with the material.

Solder capillary brazing solder, is liquid flow into and fill the gap joint.

The requirements for the performance of the gap joint and brazing process must be met in the selection of the solder joints. In order to meet the requirements of this requirement is to have a suitable melting temperature, solder to the physical properties and chemical properties can be used to form a solid and seamless combination of metal materials, it is best not to use the rare metal, because the chemical properties of rare metals are very stable, not to use brazing. Also do not use expensive metals, because the price is not high.