Page 54 - Robot Builders Source Book - Gordon McComb
P. 54
2.1 Processing Layout 43
FIGURE 2.6 Soldering of printed circuits—immersion method.
FIGURE 2.7 Molten tin wave created by a pump.
wave is produced by means of a special pump made, for instance, of ceramic.
This method, which uses molten tin from the deep layers of the pool, obviously
provides a clean stream of tin.
3. The wave is produced by magneto-hydrodynamic means, with the device shown
schematically in Figure 2.8. It consists of a specially shaped pool where the tin
is located. The bottom of the pool has two hollow protuberances. The poles of
FIGURE 2.8 Molten tin wave created by
magneto-hydrodynamics.
TEAM LRN
