A vaporising nozzle comprises a wall of porous material, for example sintered bronze, through which the liquid to be evaporated percolates.
The bronze powder is sintered in a furnace at a temperature of ≤ 850° C in a protective gas atmosphere and the pores of the sintered bronze are filled by vacuum infiltration with a PTFE suspension.
The matrix material may be a sintered bronze into which the antifriction material is incorporated or a thermoplastic material in which the antifriction material is finely distributed.
Fig. 11 and fig. 12 show an application where more than 1 000 SKF maintenance-free spherical plain bearings with the sliding contact surface combination steel/PTFE sintered bronze are used.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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