Module 15 Air-Carbon Arc Cutting & Gouging with complete verified solution

A-CAC This process can be used in all positions on any metal that will conduct electricity? gouge A primary purpose of the A-CAC process is to ________ weld grooves and prepare cracks for welding. compressed air To blow molten metal away, the A-CAC process uses jets of _________________ ______. currents The _______________ used with A-CAC electrodes compared to shielded metal arc welding (SMAW) electrodes of the same size are much higher. DC constant-current The preferred power source for a A-CAC torch is a(n) ________ _____________ - _____________ machine. lowest pressure To ensure the molten metal is blown away from the cut, the A-CAC operator should set the air pressure regulator to the ________________ ______________ that will reliably do the job. plain Three basic types of A-CAC electrode types are copper-coated for direct current, copper-coated for alternating current, and ____________. width The ___________ of their widest side is how flat electrodes are sized. darker The lens for A-CAC cutting should be _______________ when comparing the lens shade used for A-CAC processes to those chosen for welding on the same thickness of material. electrical cable, compressed The connecting cable of the A-CAC torch contains both a(n) ______________ ___________ & a(n) ___________________ air hose. flame-resistant shields To keep molten metal from splattering nearby equipment or personnel during A-CAC activities, make sure that __________-________________ ___________ or curtains are erected. workpiece clamp The _________________ __________ should be correctly positioned to ensure the welding current will not pass through seals, bearings, or other contacting surfaces that could be damaged from arcing. electrode To create a shallow gouge, the A-CAC operator should advance the _______________ rapidly. hard, brittle It is important to clean dross and carbon deposits from a cut surface before welding because they can form ___________, ___________ zones and porosity in the weld zone. Notches ___________________ left in the base metal have a tendency to trap slag during welding. 80, 100 _________ to ________ pounds per square inch is the amount of air pressure normally supplied to a heavy-duty A-CAC electrode holder. True True/False Fumes are a potential hazard associated with the A-CAC process. False True/False The A-CAC process requires the same shade of filter plate as PAC. False True/False The A-CAC process does not require electricity. graphite While performing A-CAC, a carbon mixture or copper coated _______________ electrode can be used.