Modélisation d'épisodes de conception d'observatoires à partir de corpus narratifs

A full round bushing is formed by laser welding opposed edges of a bimetal member deformed into a generally cylindrical configuration. The laser beam parameters are closely controlled so as to limit any adverse effect on a bearing metal layer. The weld only reaches a depth approximating 20% to 75% of a steel reinforcing layer. The beam approaches the seam at an angle of incidence approximating 10 DEG to 45 DEG and at a laser focal point offset 5% tp 70% of the spot diameter of the laser beam. An overlap of the pulse spot-welding approximating 50% to 75% is preferable.