Vision_Serie_EN_2023 - 第10页
10 A clean machine: effective Residue Management As is the case with all industrial processes, substances are generated during SMT produc - tion which have to be remo ved from the pr ocess cycle because they contaminate …
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The centrepiece of our Vision-Series is the process chamber with its
outstanding heat transfer owing to advanced hole nozzle geometry as
well as monitored adjustable overpressure in the heating module, guar-
anteeing homogeneous and gapless heat transfer to the circuit board.
The inert process atmosphere can be assured throughout the entire sol-
dering process and beyond because the closed system ensures that no
external air nds its way into the process chamber. The heat ow within
the system takes place by means of circulation, i.e. the process gas of
the preheating and peak zones is extracted, cleaned and reinserted into
the process at the sides.
With a linear prole, the component is not heated
in a stepped manner during soldering, in fact it
is heated along an identical linear temperature
gradient. Linear proles can reduce cycle times
and can help to reduce soldering errors such as
tombstoning.
The component is brought to a temperature
of at least 240 °C for soldering. Using a saddle
prole the board is gradually heated in line with
pre-dened, individual temperature ranges. Even
components with differing thermal masses are
heated homogeneously and temperature differ-
ences minimised.
Saddle prole
Linear prole
Convection
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Separately adjustable heating zones
Reproducible temperature prole
Outstanding process stability with the smallest possible ΔT
Homogenous heat input over the entire PCB thanks to specially designed nozzles
Low maintenance effort
Homogenous heat transfer
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Vision-Series | Heat transfer
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A clean machine:
effective Residue Management
As is the case with all industrial processes,
substances are generated during SMT produc-
tion which have to be removed from the process
cycle because they contaminate the system. Our
highly effective residue management function
puries the process gas safely and reliably, and
keeps your system clean and dry.
The residue management function included in
the Vision-Series combines depending on the
system type two different modes of action: py-
rolysis in the heat zone and cold condensation in
the cooling tract’s lter units. Liquid and crystal-
line residues are effectively removed by means of
this combination.
VisonXP+, Vision XP+ Vac and Vision TripleX
are equipped with with pyrolysis in the heating
zone and and lter units in the cooling zone as
standard. Pyrolysis can optionally be added to Vi-
sionXS models for the purposes of cold trapping.
VisionXC systems are tted with cooler lter
units in their cooling zone.
In order to make your manufacturing system
even more efcient, the VisionXP+ is optionally
available with double pyrolysis. Your system’s
cleaning efciency is signicantly increased.
The rst pyrolysis unit is located underneath the
inlet area and puries the process gas from the
lower heating zones. The second pyrolysis unit
is installed on top of the inlet area and lters the
process gas from the heating zones. Cleaning
efciency is signicantly increased for the pro-
cess gas and the soldering system’s chambers
are kept clean and dry with very little maintenance
and minimal downtime.
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lter
cooler
drop formation
pyrolysis
closed loop process atmosphere closed loop cooling
Residues are separated with the help of a special granulate during
pyrolysis. Long molecular chains are broken down (cracked) into smaller
elements by means of thermal ssion. Temperatures from about 500 °C
are required to this end. Afterwards, the molecular chains are small
enough to be taken up by the granulate and removed from the pro-
duction process. The granulate only needs to be changed once a year,
making the pyrolysis unit easy to maintain – and you prot from minimal
downtime. Your manufacturing processes continue to run smoothly.
Pyrolysis at 500 °C
Liquid residues condense above all on the cooling
tract’s lter units, by which they are then removed.
The system is easy to clean. The lters are ex-
changed in sets at the back of the system. The
process chamber doesn’t even have to be opened.
Depending on system type, the oven is equipped
with a 2, 3 or 4-stage condensation trap.
Cold condensation
Efcient cleaning for a clean and dry process chamber
System integrated solution
Reliable, stable process
Easy accessibility
Low maintenance effort
low
maintenance
expenses
not available for VisionXC
Vision-Series | Residue Management