Pac welding - Study guides, Class notes & Summaries

PAC Welding Test Latest Update...

PAC uses jet plasma that can reach temperature as high as _____ ___? - CORRECT ANSWER 30,000°F What are the two primary types of PAC processes? - CORRECT ANSWER Transferred and Non-Transferred arcs In the transferred arc process, the pilot arc is used to _______? - CORRECT ANSWER ionize the air jet In a non-transferred arc process, the material being cut is ______? - CORRECT ANSWER not electrically connected to the arc circuit

Wood - Answer-A Class A fire extinguisher can be safely used on a ________ fire. A watchperson outside the space - Answer-When welding in a confined space, the welder must have ________. valve assembly - Answer-What component of an oxygen cylinder allows the product to be removed? 6 - Answer-When medium gas welding, a number _________ filter lens should be used. welding process - Answer-Information contained in the tail of a welding symbol might include _________. Circle - Answer-...

WELDING- RED SEAL PREP Define low carbon steel - Steel with a carbon range of .05-.3% carbon Define medium carbon steel - Steel with a carbon range of .3-.45% carbon What's the rule of thumb for tungsten end prep? - 2.5x E ø What can excessive spatter and undercut of weld bean be caused by? - High current When using a E4918 electrode and the arc is seen to be pulsing. What is the likely cause? - Wrong polarity What rod should not be stored in a rod oven? - Cellulosic MIG ...

Dross A waste by product of molten metal. Plasma A fourth state of matter (not solid, liquid, or gas) created by heating a gas to such a high temperature that it boils electrons off the gas molecules (ionization). Transferred Arc Process The plasma arc cutting process type most commonly . used. 100% cotton When operating plasma arc cutting equipment, it is acceptable to wear a hat made out of ______. Amperage (amps) The unit of measure used for the intensity of a...

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 ...

Transferred Arc Process The plasma arc cutting process type most commonly used is the. 100% cotton When operating plasma arc cutting equipment it is acceptable to wear a hat made of. 35 % The duty-cycle range for a light-duty unit is typically. Amperage The unit of measure used for the intensity of an electric current; often abbreviated to amp or amps Dross A waste by product of molten metal Duty cycle The percentage of a plasma arc cutting machine can cu...

Transferred Arc Process The plasma arc cutting process type most commonly used is the. 100% cotton When operating plasma arc cutting equipment it is acceptable to wear a hat made of. 35 % The duty-cycle range for a light-duty unit is typically. Amperage The unit of measure used for the intensity of an electric current; often abbreviated to amp or amps Dross A waste by product of molten metal Duty cycle The percentage of a plasma arc cutting machine can cu...

A Class A fire extinguisher can be safely used on a/an _____ fire. A. Wood B. Grease C. Electrical D. Magnesium - Answer- A. Wood When welding in a confined space, the welder must have A. all equipment in a confined space B. a second welder inside the space C. an approved breathing device D. a watchperson outside the space - Answer- D. a watchperson outside the space On an OFC set up, the hose with the right-handed thread fittings connects to which gas? A. acetylene B. argon ...