Columbia International University

GTAW If you see the label TIG on a welding machine, that machine is considered to be what kind of welding machine? oxygen During the GTAW process, UV radiation in the atmosphere near the weld can ionize ___________________. direct current electrode negative (DCEN) GTAW is most commonly performed using ___________________. 1/2 inch High voltage, high frequency current creates a very stable arc that is able to jump a gap of about _____________________. arc starting ...

flux A shielding gas can be generated entirely from the ____________________ in the electrode core. (self shielded FCAW-S) rear deflector material If a hard hat is required for the environment, use one that allows the attachment of ____________________. flash sheids When preparing to practice welding, set up ____________________ around the welding area. 30 to 37 1/2 V-groove weld coupons must be beveled at _________to___________degrees for carbon steel or low alloy plate...

The modern word for plumber is derived from the Latin word for A person who works with lead LEED applies to all areas of the profession, except Renovation Water that comes from laundry and bathtubs and reused in known as Graywater Suggested national plumbing standards are called Model codes You are offered a job by another contractor before you have fulfilled your current obligations. The professional response is to Ask the contractor to wait until you have met y...

Arc burn burn to the skin produced by brief exposure to intense radiant heat and ultraviolet light Bonded the permanent joining of metallic parts to form an electrically conductive path that will assure electrical continuity and the capacity to safely conduct any current likely to be imposed on it Carbon steel an alloy of iron combining iron and usually less than 1 percent carbon to provide hardness Electric arc the flow of an electrical current across an air gap or gase...

Welding symbols in WPS (Welding Procedure Sheet) they convey specific details for the weld Reference line base for all welding symbols. It is a horizontal line with an arrow at one end. Arrow line can be on either side of the reference line and it points to the location the welding symbol is to be applied American Welding Society (AWS) Most companies use the welding symbols from A2.4:2007, Standard Symbols for Welding, Brazing, and Nondestructive Examination as standardi...

ferrous metals What use is oxyfuel cutting best suited for? oxidize The stream of high pressure cutting oxygen that is directed from an oxyfuel torch causes to metal to instantly _____? 3-6 The recommended range of tinting for either the face shield or the safety glass lenses used during an oxyfuel cutting operation is ______? Oxyfuel gas welding or cutting Most welding environment fires occur during _____? Fill it with water or a purge gas When preparing a tank ...

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...

Annealing heat treatment that reduces the bitterness of the work carbide precipitation the process of carbides combining with chromium to create chromium carbide. thee result is a reduction of chromium and the corrosion resistance it provides. intergranular corrosion results in loss of chromium Heat Affected Zone (HAZ) the portion of the workpiece/base metal whose mechanical properties or microstructures have been or will be altered by the heat from welding, brazing, soldering, ...

NCCER Welding Level 2 Module 3 Terms with verified correct definitions

Arc Burn Burn to the skin produced by brief exposure to intense radiant heat and ultraviolet light Bonded The permanent joining of metallic parts to form an electrically conductive path that will assure electrical continuity and the capacity to safely conduct any current likely to be imposed on it. Carbon Steel An alloy of iron combining iron and usually less than 1 percent carbon to provide hardness. Electric Arc The flow of an electrical current across an air gap or ga...