What is another word for undercut?
What is another word for undercut?
In this page you can discover 12 synonyms, antonyms, idiomatic expressions, and related words for undercut, like: undermine, hollow, gouge, undercharge, underprice, sell for less, cut, sell, tenderloin, undersell and weaken.
What is an undercut in dentistry?
Mosby’s Dental Dictionary defines an undercut as “the portion of a tooth that lies between its height of contour and the gingiva, only if that portion is of less circumference than the height of contour.”
What is height of contour on teeth?
The height of contour (crest of curvature) is the greatest amount of a curve, or greatest convexity or bulge, farthest from the root axis line. The height of contour on the facial or lingual surfaces of the crown is where this greatest bulge would be touched by a tangent line drawn parallel to the root axis line.
What causes undercut?
An undercut is usually produced from overheating and poor welding technique. Undercutting can be caused by maintaining to long of an arc length. Another common reason for undercutting is the improper selection of a gas shield. Also, an undercut can happen if a welder tries to weld quickly with a high welding current.
How do you prevent an undercut?
How to Prevent Undercut in Stick Welding: 12 Golden Tips
- Control Your Arc Length.
- Control Weld Angle.
- Reduce Current.
- Slow Down the Travel Speed.
- Reduce the Weave Width.
- Choose the Correct Welding Position.
- Consider Which Electrode You Are Using.
- Allow the Base Metal to Cool.
What is excessive undercut?
In welding, undercutting is when the weld reduces the cross-sectional thickness of the base metal. One reason for this defect is excessive current, causing the edges of the joint to melt and drain into the weld; this leaves a drain-like impression along the length of the weld.
How much undercut is allowed?
undercut shall not exceed 1/32 in., with the following exception: undercut shall not exceed 1/16 in. for any accumulated length up to 2 in. in any 12 in. …” Depth of undercut that is not more than 1/32 in. is acceptable, period!
What is porosity in welding?
Porosity is the presence of cavities in the weld metal caused by the freezing in of gas released from the weld pool as it solidifies. The porosity can take several forms: distributed. surface breaking pores.
What is acceptable Weld?
ACCEPTABLE WELD. A weld that meets all of the requirements and the acceptance criteria prescribed. by the welding specifications. UNACCEPTABLE WELD.
What is excessive convexity in welding?
Excess concavity reduces throat thickness, which considerably reduces weld strength. This condition usually is caused by excessive welding current or arc lengths. Excessive Convexity. Excessive convexity can produce a notch effect in the welded area and, consequently, concentration of stress under load.
What are the characteristics of an acceptable weld profiles?
The basic conditions of welding quality to achieve products of such high quality includes the following:
- No cracks or holes found in the bead.
- The bead has uniform waves, width and height.
- The finished product satisfies the design dimensions and has almost no distortion.
- The welding meets the required strength.
What should be the position of the welded plates?
This type of welding is performed from the upper side of the joint. The face of the weld is approximately horizontal. Flat welding is the preferred term; however, the same position is sometimes called downhand….Flat Position Welding Procedures.
| Plate thickness, in. | Number of passes |
|---|---|
| 5/8 to 7/8 | 3 |
| 7/8 to 1-1/8 | 4 |
What are the 5 welding essentials?
WELDING PROCEDURES
- 5 essentials for proper welding procedures.
- 1) CORRECT ELECTRODE SIZE.
- 2) CORRECT CURRENT.
- 3) CORRECT ARC LENGTH or VOLTAGE.
- 4) CORRECT TRAVEL SPEED.
- 5) CORRECT ELECTRODE ANGLE.
- 8 FACTORS to consider in selecting arc welding electrodes.
Can welding be self taught?
While teaching yourself to weld isn’t easy, there are many ways you can learn and practice welding at home. There are many books, tutorials, YouTube videos, classes, and in-person opportunities that can teach you the basics of welding. We recommend starting with MIG welding if you want to teach yourself how to weld.