抄録
The brazing is a method of permanently joining a wide range of materials and has wide application in fabrication components of commercial value. It is distinguished from welding in that the process takes at temperatures below the melting points of the materials to be joined and from soldering by the temperature of processing above method 450°C. This method is commonly used in electronics or refrigerating machines due to its advantage of diminution of heat influence and easy manufacturing.
Unfortunately, the brazing method for copper alloy used in household air conditioner has some demerits that the copper alloy is susceptible to heat and the resulting joints may have various
flaws. Therefore deciding the optimal joint conditions is an effective method on the basis of the experimental data. However, using a trial-and-error method form the beginning in such a wide
area, in order to decide the optimal conditions requires too many number of experience, to overcome these problems and to decide the optimal conditions a procedure using response surface methodology. The response surface methodology, consisting of experimental design, statistical modeling and optimization is used to decide the optimal joint parameter with process conditions.
