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<p>86.109.49.98: /* a. Welding and cutting torches */</p> <hr /> <div>{{honor_header|3|1978|Vocational|General Conference}}<br /> <br /> ==(Instructor Required) ==<br /> ==1. Identify all parts of the following: ==<br /> ===a. Welding and cutting torches ===<br /> <br /> ===b. Oxygen and acetylene gauges and their differences ===<br /> ===c. Oxygen and acetylene hoses and their differences ===<br /> ===d. Oxygen and acetylene tanks and their differences ===<br /> ==2. Explain the safe working pressures of oxygen and acetylene, as per your instruc­tor's directions, for various procedures. ==<br /> ==3. While blindfolded, demonstrate ability to hook up an entire oxyacetylene kit, including tanks, gauges, hoses, and torches, and light the same.** ==<br /> ==4. As per your instructor's directions, weld two mild steel test plates (1/8 inch x 1 inch x 8 inches) (0.3 cm x 2.5 cm x 20.3 cm) in horizontal, and vertical positions.== <br /> ==5. Use a cutting torch and demonstrate your skill by making one 12 inches (30.5 cm) straight-line cut, one circle cut of at least 3 inches (7.6 cm) in diameter and one 3 inch (7.6 cm) star cut. The cuts are to be made on mild steel plate at least 1/4 inch (0.6 cm) thick. ==<br /> ==6. Demonstrate your ability to braze a cast-iron object with at least 1/4 inch (0.6 cm) double bevel butt weld 2 inches (5 cm) long.==<br /> <br /> ==7. Explain the safety precautions and safety equipment normally used in electric welding in relation to eyes, hands, and exposed skin areas. Why should the tank valves never be oiled? ==<br /> ==8. Explain the difference between oxyacetylene and electric arc welding. ==<br /> ==9. Demonstrate ability to select from an electrode guide the proper amperage and electrode for various types and thicknesses of metal. ==<br /> ==10. Demonstrate ability to weld flat, vertical, horizontal, and overhead on (1/8 inch x 1 inch x 8 inches) (0.3 cm x 2.5 cm x 20.3 cm) mild steel test plates. ==<br /> <br /> ==Note: An instructor is a must. Welding is a very critical and serious skill to learn and is not a home-type course. Welding essentially takes the place of bolts and rivets, and if not properly done, is most dangerous. Example: A trailer hitch not properly bond­ed, or machinery exposed to the strain of pull or weight, is an invitation to disaster.==<br /> <br /> ==Note: ** This requirement demonstrates one's skill in working in darkness, such as in an emergency. All acetylene connection threads are left-handed, while all oxygen connection threads are right-handed. ==<br /> <br /> ==References==<br /> <br /> [[Category:Adventist Youth Honors Answer Book|{{SUBPAGENAME}}]]</div>

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