Welding Questions and Answers 100% Pass

Welding Questions and Answers 100% Pass ______________welding joins metals by blending compatiable molten metals into one common part or joint. ✔✔Fusion _________or nonfusion joining occurs when two or more pieces of ...

Welding Questions and Answers 100% Pass ______________welding joins metals by blending compatiable molten metals into one common part or joint. ✔✔Fusion _________or nonfusion joining occurs when two or more pieces of steel are held together by a noncompatiable molten brass or silver material ✔✔Adhesive The three basic types of fusion welding are? ✔✔Gas Electric Ark Electrical Resistance Gas welding utilizes what two gases? ✔✔Oxygen and Acetylene The Temperature of a neutral oxyacety flame is about__________to___________degrees fahrenheit ✔✔5600-6300 Electric welding produces a blinding light with__________and___________rays which can_________both skin and eyes ✔✔infrared ultravilot burn Anyone performing electric arc welding must wear? ✔✔Arc welding helmet gloves proper clothing Shielded metal arc welding (SMAW) is more commonly known as____________welding ✔✔Stick MIG Welding may also be known as_________ _______ arc welding ✔✔gas metal An uncoated wire is fed into the torch as a consumable electrode in _________(TIG OR MIG) ✔✔MIG The form of arc welding that fills most of the needs in aircraft maintenance is know as_________ __________ _____ arc welding. This is commonly referred to by what three letter designation? ✔✔Tungston Inert Gas TIG A small wire of ____________is used as the noncomsumable elecrtrode for TIG welding. ✔✔Tungkston In a TIG welder, the electric arc produces a temperture of up to______________degrees ✔✔11,000 When using a direct current for TIG welding, the most heat is put into the work when the DC is connected with________(straight or reverse) polarity ✔✔Straight Two forms of electrical resistance welding are? ✔✔Spot and Seam What three variables are ocntrolled to get the proper weld using wither of the two electrical resistance welding methods? ✔✔Current Pressure Dwell time The five basic types of weld joints are? ✔✔Butt Tee Lap Corner Edge A cleanly formed oxyacetylene weld should encompass the following qualities? ✔✔Uniform Width Good Penetration Adequate reinforcement Uniform ripples Penetration of welded aircraft parts shold be at a depth of ____________% of the thickness of the base metal ✔✔100 In brazing, the filler metel is pulled between closely fitting parts by____________action ✔✔Capillary When brazing, the filler rod should be melted by A. Holding the rod in the Flame of the torch B. Touching the rod to the hot metal ✔✔B. Touching the rod to the hot metal Soft solder is a mixture of_________and________ ✔✔Tin and Lead Fittings may be attached to stainless steel oxygen lines by____________soldering ✔✔Silver Aluminum__________(does or does not) change in color as it melts. ✔✔Does NOT Which gas is better to torch welding aluminum, acetylene or hydrogen? ✔✔Hydrogen The main advantage to oxyhydrogen welding is that the hydrogen flame burns___________(cleaner or hotter) than acetylene ✔✔Cleaner The flame used for welding aluminum should be neutral or slightly_______________(carburizing or oxidizing). ✔✔Carburizing An________ ____ shields the puddle of molten metal to prevent the formation of oxides when TIG welding ✔✔Inert gas Tutanium must be welded in an atmosphere that prevents any _________or ___________ from contacting the hot metal ✔✔Oxygen or nitrogen Exhaust stacks from an aircraft engine should be TIG welded using ___________(DC or AC) ✔✔DC A dented structual tube may be repaored with a welded patch to provided the dent is no deeper than _______the tube diameter and doesn't involve more than________ of the tube circumference ✔✔1/10 1/4 The rosette weld is a form of __________(lap or butt) weld ✔✔LAP The ends of a reinforcing tube used over a damaged tube in an aircraft structure can be cut with eithier a 30 degree___________ or a ___________ ✔✔Scarf Fishmouth Use of __________ parts on a landing gear assembly makes welding repairs _________or _______________ ✔✔Heat treated difficult or impossible Acetylene gas stored under pressure of more than ________PSI will become unstable ✔✔15 Normal operating pressure for most welding jobs using acetylene is _____to_____psi ✔✔4 to 8 Acetylene gas may be stored under pressure by combining it with_______ ✔✔Acetone The amount of actylene gas in a steel cylinder is determined by_______(weight or pressure) of the cylinder. ✔✔Weight The acetylene tank valve shold be opened no more than _______to_______turns ✔✔1/4 to 1/2 Oxygen must never be used in the presence of___________based substances ✔✔Petroleum Tanks previously filled with __________, __________ or ____________fluid must be ________ _________ before beginning any welding operations ✔✔gasoline, alcohol or hydralic Steam Cleaned Turning the acetylene regulator adjusting handle clockwise will________(open or close)the valve ✔✔CLOSE The acetylene hose is colored_________and has a _______(left or right) hand threaded fitting at each end ✔✔RED LEFT The torch most often used with cylinder gases is an ____________ (equal pressure or injector) type ✔✔Equal Pressure A torch designed for light duty welding such as one used with aircraft thin wall tubing, has it valve on the end of the torch near the ____(tip or hoses) ✔✔Tip The lower the number of the welding tip (not the size of the orifice), the__________(smaller or larger) the tip ✔✔Smaller The size of the orifice in a welding tip is measured with the shank of a___________ ✔✔Number Drill Torches should be lit with a______not with_________or ___________ ✔✔Striker Matches or lighter Most mild steel filler rods are coated with__________to prevent rust from forming on the surface of the rod ✔✔Copper Oxyacetylene welding goggles___________(will or will not) provide adequate eye protection for electric arc welding ✔✔Will NOT The lower the number of welding goggles filter, the _________(lighter or darker) the filter ✔✔lighter A__________(blue or brown) filter should be used in the welding goggles for welding aluminum, ✔✔Blue The ______________of the metal to be welded will determine the size of the torch tip needed ✔✔thickness An oxyacetylene flame in which the feather of the outer cone just diappears into the inner cone is a _____________(neutral or oxidizing) Flame ✔✔Neutral When a oxyacetylene welding torch is shut off, the ___________(oxygen or acetylene) is shut off first ✔✔Acetylene The union nut for connecting the oxygen regulator to the cylinder valve has _________(right or left) hadn threads ✔✔Right The fittings on the ___________(oxygen or acetylene) hose are identified by a goove cut around their hex nuts fittings, ✔✔Acetylene The oxygen hose is colored______and has a _______(left or right) hand threaded fitting at each end ✔✔Green and Right The preheat flame in an oxyacetylene cutting torch should be adjusted to a___________(neutral or oxidizing) flame ✔✔Neutral