Attention to the usage of air-arc gouging cai-bon electrode:

1,Power:Normal D.C.for welding machines can be used for air-arc gouging car-bon electrode.

2,Range of currency:The currency range adopted directly influences the processing quality and results.if it is too small.it will be dif ficult for gouging;if too large ,it will cause heated carbon head too long,which will result in the rod becomes thinner and the processing qualitypoor.Therefore the proper currency range as shown in the table herewith should be adopted in accordance with the model and dimension of gouging carbo electrode.

3,Range of Air pressure:The normal air pressure range is 4-6kg/cm2,which shall be in compliance with the diameter of gouging carbom electrode.in general,higher air pres-cure is for bigger diameter of the rod and lower pressure for smaller diameter. if air pressure for smaller diameter.if air pressure is too high, electrical arc is unstable;if too low, melted metal can not be blew off easlily, which will infulecce the quality of gouging groove

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