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Welding Inspections
Types and Inspections
| Question | Answer |
|---|---|
| What kind of weld is used when two pieces of metals overlap each other? | Lap Weld |
| Used for a 90 degree angle joint of two peices of metals | Fillet Weld |
| This weld must pentrate 25-50 percent thickness of the bade material. | Fillet Weld |
| Two pieces of metals aligned and good penetration of 100%. | Butt Weld |
| Weld performed from both sides. | Double Butt Weld |
| When holes and globules are found in welds what must one do? | All of the old weld must be removed and rewelded |
| One characteristic of a good weld is that no oxide should be formed on the base material more than? | 1/2 inch from the weld |
| Makes the molten metal boil causing bumps along the center and craters alond the weld edge. | Too much acetylene |
| Has irregular edges and considerable variation in depth of pentration. | Cold Weld |
| Produces a weld with pitting along its edges and pointed ripples. | Excessive heat |
| What happens to the part if it is cooled too quickly after being welded? | Cracks often appear adjacent to the weld |
| What are three common methods of joingin metal? | Soldering, Brazing, and Welding |
| A method of joining materials in which a portion of each piece is melted and combined in its molten state. | Welding |
| Depth of fusion in a weld. (Most important characteristic of a good weld.) | Penetration |
| Uniform in width, with even ripples that taper off smoothly into the base metal. | Good Weld |
| Why is it considered good practice to normalize a part after welding? | To relieve internal stresses developed within the base metal |
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