| 摘要 |
In order to protect a junction between mechanical parts made from different metals from electrolytic corrosion, there is interposed between the parts a protective shield which is formed from sheet metal, generally steel, the surface of which is treated to render it electrically passive; more particularly, in the motor-vehicle field, the connection between the flange of a wheel bearing and the respective strut or between the flange and the end of a shock absorber or of a disc brake may be the seat of electrolytic corrosion; such corrosion is caused by electrovoltaic potentials generated in the zone of contact between different metals in the presence of moisture; the protective shield may also cover the side of the outer ring of the bearing and cooperate with the seal as an additional labyrinthine sealing element. <IMAGE> |
