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American National Standards Institute (ANSI) - The organization which developed welding symbols. Welding Symbol - Gives details about how the object should be assembled and joined together. Weldment - When two or more pieces are joined by welding. Welding Joints - When pieces of a weldment are assembled, the lines along which their edges and surfaces come in contact. Weld Symbol Arrow Side - The side of the metal which the arrow touches. Weld Symbol Other Side - The opposite surface from t...

If a groove only goes part of the way through the joint, welding in the groove results in what is called what? - partial joint penetration The portion of the edge of a part to be joined by a groove weld that has not been beveled or grooved is called what? - root face For long term cutting or welding of materials containing cadmium, what should you wear? - an approved full-face, supplied-air respirator For an open root V-groove weld, the thickness of the root reinforcement should be no more...

One backing material used in groove welds is what? - Inert gas Single groove weld with metal backing are used for what? - high-strength & high-quality welds When preparing weld coupons for V-groove welds with backing, cut the metal strips so that they are atleast what size? - 1" X 8" To conform with AWS limited thickness test coupon requirements, the weld coupons should be what? - carbon steel that is 3/8" thick Low hydrogen electrodes do not have a heavy gas shield, mainly depend...

Line on a horizontal axis parallel with the earths surface (horizon). Also, is a bubble in a glass vial to check level and plumb. Made from aluminum or magnesium. - Level Line on a vertical axis perpendicular to the earths surface (horizon). - Plumb Preplaced filler metal that is completely fused into the root of the joint during welding. - Consumable Insert Used to measure round stock and to locate the center of the shafts or other round objects. - Vshaped Centering PRIMARY PURPOSE: Check...

This can be used to locate the center of shafts or other round objects. - V-shaped head attachment of a combination square The tool that uses a bubble in a glass vial to check level and plumb is what? - level How is the internal misalignment between two sections of pipe to be welded end to end checked? - using a Hi-Lo gauge When using a chain fall to lift or lower weldment parts, what should you do? - Always secure the chain fall to an overhead structural member with an approved sling. Wh...

Always shut off the circuit breaker before - disconnecting the welding machine. Inspect your fall protection equipment before each use. - DC current is produced when - a engine powered welding machine turns a generator. Inverter controlled welding machines offer - a very smooth and steady DC welding arc and are smaller and lighter powered sources. Duty cycle and rated amperage is how - the capacity of a arc welding machine is determined. Welding leads that have a quick disconnect end on t...

Nibblers prepare the edge of base metals using a __________________________. - reciprocating punch One of the joints used with a plug and slot weld is a _________________________. - lap Common-grade stainless steels normally contain at least ________________________. - 11 percent chromium Surfacing welds can be used to ______________________. - build up surfaces Cutting metal with oxyfuel, plasma arc, or air-carbon arc processes is referred to as _______________________. - thermal cutting...

In the SMAW method, what kind of consumable electrode is used to place the weld? - flux coated (1) What is the most common fuel gas used for oxyfuel cutting? (2) Name another gas used for cutting work. - (1) acetylene; (2) propane The Department of Labor's ______________________ sets the minimum standards for training programs across the country. - Office of Apprenticeship Welders should never wear clothing made from _____________________ or other synthetic fibers. - polyester While we...

Steel that contains more than _____________ carbon develops brittle properties. - 1.4% The AISI system sometimes uses a _______________ to indicate the manufacturing process used to produce steel. - letter prefix The principal difference between plain-carbon steels and high strength low-alloy (HSLA) steels is the addition of _______________. - alloys Most Q&T steels are furnished as _______________. - plate Austenitic stainless steels are _______________. - nonmagnetic Precipitation-harde...

Quenching medium- and high-carbon steels produces a hard and brittle ____________________. - crystalline structure ____________________ and castings have a high heat absorption capacity - Heavy plate Low carbon steel must be preheated to ____________________. - above 70 degrees F When using an open-top preheater, the object to be heated is mounted on the support structure directly ____________________ the gas burners. - above In induction heating, an alternating ____________________ is gen...

When the flux-cored wire does not require an external shielding gas, the process is called _____________________. - self-shielding FCAW or FCAW-S If the tongue and lace area of your safety shoes is exposed, you should wear _____________________. - leather spats or chaps When possible use powered extraction systems that are designed to remove ___________________. - welding fumes Modes of GMAW metal transfer include: - spray transfer, globular transfer, and pulsed transfer Pulsed transfer (...

In the GMAW process, a composite-cored electrode (powdered metal inside core) is used for the ____________________. - filler metal When gas welding, you must always wear a _________________ or __________________, and the lenses must be an approved shade. A properly tinted welding hood is best for all forms of welding. - face shield or safety glasses Use ____________________ systems to remove welding fumes. - powered extraction When preparing a welding area, set up ____________________. - w...

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

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

Since there is no flux in GTAW welding, ____________________. - no postweld cleaning is necessary When a hard hat is required while welding, use one that allows the attachment of _____________________. - rear deflector material and a face shield. Approved fire extinguishers must be available before ____________________. - any welding or cutting Clean the steel plate before welding to remove mill scale, because the direct current electrode negative (DCEN) used in GTAW has __________________...

What group publishes the "Boiler and Pressure Vessel Code"? -ASME (American Society of Mechanical Engineers) What group is a private organization that does not actually prepare standards, instead it adopts standards that it feels are of value to the public interest? -ANSI (American National Standards Institute) If you have been directed to perform an unsafe act by your immediate supervisor, what should you do? - You go "over their head" to the general foreman, superintendent, p...

For gas welding, either the face shield or the lenses of the safety glasses must be an approved shade__filter - b. 3 to 6 Most worksite fires caused by welding or cutting are started by - d. Cutting Torches When mixed with air or oxygen, __will explode at much lower concentrations than any other fuel - c. Acetylene When pure oxygen is combined with fuel gases, the pure oxygen produces - d. A high temperature flame needed for flame cutting Oxygen has a strong garlic-like odor so leaks can ...

backfire - a loud snap or pop as a torch flame is extinguished carburizing flame - A flame burning with an excess amount of fuel; also called a reducing flame. drag lines - The lines on the edge of the material that result from the travel of the cutting oxygen stream into, through, and out of the metal. dross - the material that is expelled from the kerf when cutting using a thermal process, sometimes called slag ferrous metals - metals containing iron flashback - the flame burning back i...

Accidents are made more likely for employees in the age group - a. 18 and under Body protection while welding is best provided by wearing - c. Cotton clothing Which of the following is a correct statement - c. The recommended shade for SMAW welding is 10- 14 The potentially toxic coating that is used in galvanized metal is - a. Zinc To make sure your respirator provides proper protection you must__each time you wear it - b. Positive and Negative fit test must be performed A confined space...

Which of the following is the definition of "policy" - Plan Arc radiation can cause what on skin? - Burns Which of the following decible measurements can cause heating damage? - 95 Johnny is welding in a confined space. Which of the following gases is likely to be consumed and could cause Jonny to suffocate if it is completely depleted? - Oxygen Sophia is designing a new welding shop for the local high school. Where should the compressed gas and fuel cylinders be stored? - In a locat...