18
5.2
Casting without metal premelting
1-14. perform preparational jobs
⋅
see chap. 5.1 „Start here…“
15. Take muffle off the preheating
furnace and insert in the middle
of the muffle chamber (7)
⋅
Support plate has to be clean
(Insert Insulating- and centering tool before, chap. 5.1)
16. Close muffle chamber (7)
⋅
Muffle may not shift, close chamber as far as it will go
17. Tighten chambers
⋅
Swivel locking lever upwards (vertical)
and press on in direction to the machine.
18. Melting
⋅
Turn multiple-contact switch to „1“, turn rotary switch
from „0“ to "max=10" - LED yellow and green are "ON"
and vacuum starts automatically
⋅
Argon rinsing: 450°C before casting performance is
automatically reduced and Argon is added.
So a more precise temperature measurement
is granted and the casting result is positively influenced
(Oxide reduction, more silent melting. Evacuation stops
until it is reactivated in the following chapter.
⋅
Additionally it’s possible to obtain the same performance
reduction and Argon rising at any time by pressing the
Argon key.
