Mini SMT Reflow Oven User Manual
wave has related to the PCB, the density and size of components. Generally
lead-free welding temperature should be higher 40
℃
than melting point.
Temperature Area Set
1. Set the temperature and belt speed to initial value (usually the manufacturer
supply when adjust)
2. To the cooling oven, should be preheated for 20-30 minutes.
3. When the temperature is stable, let PCB board pass heat reflow system.
Under this set, the solder paste can reach the reflow critical point. If there is no
reflow, to operate as step 4. If the reflow is too fast, please keep correct
proportion to increase or reduce the temperature. And let the PCB pass the
system again until reach the reflow critical point. Then turn to step 4, only when
there is reflow that is good.
4. If there is no reflow, please reduce the belt speed. For example, now the belt
speed is 500mm/min, please adjust it to about 460mm/min. Usually, reduce the
speed 10% can increase the temperature about 30F. Another way is that, do
not adjust the speed, and increase the temperature properly. The increase
range standard is the temperature wave. Adjust the temperature on the basis
difference between PCB actual and standard temperature. The adjust range is
about 5
℃
.When adjust the temperature, it cannot exceed the PCB and
component bearing capacity.
5. Let the PCB board pass the reflow system in the new speed or new set
temperature. If there is no reflow, back to step 4 to adjust again. Or carry out
the step 6 for temperature fine-turning.
6. The heat temperature wave is adjustable according to the PCB board. You
can adjust the transmission belt speed to adjust the temperature. Reduce the
belt spend can increase the product heat temperature. On the contrary, you
can reduce the product heat temperature.
7. Attention: if there is components on the PCB, the PCB pass the reflow and it
reflow not very completely, suggest you adjust then reflow again. Usually this
cannot damage the components.
8. From low to high when set temperature. If the heat range is over the reflow
temperature too high, should increase the transmission speed or reduce the
set temperature. The detailed operation is opposite to step 4.
Equipment Installation