AM.II.A.K4
KnowledgeLayout, forming, and drilling of sheet metal components.
From the FAA library
- Chapter 4: Aircraft Metal Structural Repair › Using a Sheet Metal Brake to Fold Metal › Step 1: Adjustment of Bend Radius
Using a Sheet Metal Brake to Fold Metal The brake set up for box and pan brakes and cornice brakes is identical. [Figure 4-135] A proper set up of the sheet metal brake is necessary because accurate bending ... sheet metal depends on the thickness and temper of the material to be formed and the required radius of the part. Any time a different thickness of sheet metal needs to be formed or when a different radius is required…
- Chapter 4: Aircraft Metal Structural Repair › Forming Operations & Terms › Stretching
Forming Operations & Terms Forming requires either stretching or shrinking the metal, or sometimes doing both. Other processes used to form metal include bumping, crimping, and folding. Stretching Stretching metal is achieved by hammering or rolling metal under pressure. For example ... hammering a flat piece of metal causes the material in the hammered area to become thinner in that area. Since the amount of metal has not been decreased, the metal has been stretched. The stretching process thins, elongates, and curves…
- Chapter 4: Aircraft Metal Structural Repair › Basic Principles of Sheet Metal Repair › Types of Damage & Defects
metal, usually to an appreciable depth over a relatively long and narrow area, by mechanical means, as would occur with the use of a saw blade, chisel, or sharp-edged stone striking a glancing blow. • Dent—indentation in a metal ... produced by an object striking with force. The surface surrounding the indentation is usually slightly upset. • Erosion—loss of metal from the surface by mechanical action of foreign objects, such as grit or fine sand. The eroded area is rough…