04-10-2014, 10:27 AM
Abstracts: Resistant Spot Welding (R.S.W) is useful for automobile industries and home appliances. RSW process is mainly useful for joining the sheet up to 5mm thick. RSW is being done by passing the high current between two non-consumable electrodes with application of some amount of pressure. There are many parameters of welding which affects to the welding strength. The main parameters for welding are cycle time, electrode material nugget size, nugget shape, cooling time and current passes. So out of this no. of parameters we are going to change cycle time, electrode material and current for different materials. By passing the ideal gas through one of the electrode the welding characteristic may be changed. Design of Experiments (DOE) or Experimental Design is the design of any information-gathering exercises where variation is present, whether under the full control of the experimenter or not. DOE are useful for finding the optimum solution for the best output. 23 design of experiment are used in 2 levels of +1 & -1 and we are using current 4KA to 5KA for welding of S.S. and CRC.