Abstract
In transmission laser welding of polymers, the process
nature is dependent on rapid melting of the absorbing
part. This melting creates the heat transfer to the
transmissive part which is then melted and after the
cooling period, a weld is created. Typically in QSLW
material heats up towards the end of the welding cycle.
With this new variant, the idea is to heat the material
as fast as possible to the molten state and then keep it
there for the rest of the welding time. With variable
power control during the welding, the power level can be
adjusted to melt the material effectively, and keep it
molten during the whole welding time without overheating
the material. This way the weld is given a longer time at
melt so that more material would be mixed. Optimal power
curve can be extracted with a pyrometer and then used in
production.
This paper presents the basic design variable of the
power control system and shows how the quality of the
weld is affected with its utilization. Welding results
are compared to traditional QSLW and also to samples
which are welded with only three power steps during
welding.
| Original language | English |
|---|---|
| Title of host publication | ICALEO 2011 congress proceedings |
| Place of Publication | Orlando, FL, USA |
| Pages | 839-845 |
| ISBN (Electronic) | 978-0-9120-3594-9 |
| Publication status | Published - 2011 |
| MoE publication type | A4 Article in a conference publication |
| Event | 30th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2011 - Orlando, FL, United States Duration: 23 Oct 2011 → 27 Oct 2011 |
Conference
| Conference | 30th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2011 |
|---|---|
| Abbreviated title | ICALEO 2011 |
| Country/Territory | United States |
| City | Orlando, FL |
| Period | 23/10/11 → 27/10/11 |
Keywords
- fiber laser
- polymer
- welding
- quasi-simultaneous