| A | B |
|---|
| Welding is both an ______ and a ______. | Art and Skill |
| Knowing how far your work is away from you. | Depth perception |
| Most important welding skill | setting the heat |
| T/F I can make you into a good welder | False |
| AWS stands for | American Welding Society |
| ASME stands for | American Soety of Mechanical Engineers |
| API stands for | American Petroleum Institute |
| This group governs pipeline welding | API |
| This group governs construction projects | ASME |
| This group governs sheet metal | AWS |
| Oxy-Acetylene widely used because of.... | high burning temperature |
| Primary flame mixing ratio | 1:1 |
| Temperature of oxy-acetylene flame | 5800 |
| proper flame for welding | neutral flame |
| Sizes of oxygen cylinders | 244, 122, 80 |
| Cylinders are made out of | seemless drawn steel |
| Opens the main flow of gas | high pressure valve |
| oxygen pressure should be set at | 12-15 |
| Acetylene pressure should be set at | 3-5 |
| Acetylene red line pressure | 15 |
| porous material at bottom of acetylene tank | acetone |
| PSI | Pounds per square inch |
| Acetylene tank sizes | 300, 100, 60 |
| Oxygen tank valve turned... | all the way open |
| Acetylene cylinder valve opens... | 1/4 to 1/2 turn |
| direction of adjusting screw to increase pressure | clockwise rotation |
| size of tip is indicated by | diameter of the orifice |
| typical sizes of tips | 000, 00, 0, 1, 2, 3 |
| oxygen hoses are this color | green |
| acetylene hoses are this color | red |
| acetylene has _____ threads | left handed |
| oxygen has ____ threads | right handed |
| Welding safety clothing | Goggles, shading, gloves, apron |
| Type of floor for welding | cement, masonry |
| excess of oxygen | oxidizing flame |
| excess of acetylene | carburizing flame |
| melting of both base metal and filler rod | fusion |
| two types of welding | backhand, forehand |
| metals do this when heated | expand |
| metals do this when cooled | contract |
| when flame extends back inside the torch chamber | flashback |
| protects against flashback | antiflaschback devices |
