Synrad Pulstar P100 Series, Руководство оператора, Страница: 54 / 110

technical reference
3
6 Synrad Pulstar p100 operator’s manual
Technical overview
Caution
possible
equipment
damage
Any contaminants on the laser’s output window (or on any optic
in the beam path) can absorb enough energy to damage the optic.
Inspect all beam delivery optics periodically for signs of contaminants
and carefully clean as required. In dirty environments, purge laser
optics using filtered air or nitrogen to prevent vapor and debris from
accumulating on optical surfaces.
Optics are fragile and must be handled carefully, preferably by the mounting ring only. Be careful to select
optics that are thick enough to withstand the maximum assist gas pressure available for the process. This is
especially important in metal cutting applications using high-pressure assist gases.
Cleanliness is another important issue affecting performance; a dirty or scratched lens will under perform
and exhibit a vastly shortened lifetime. When the laser application requires air as an assist gas, use only
breathing quality air available in cylinders from a welding supply company. Compressed shop air contains
minute particles of oil and other contaminants that will damage optical surfaces. If compressed shop air is
the only choice available, it must be filtered to the specifications shown in Table 3-1.
Table 3-1 Assist gas purity specifications
Assist Gas Typical Purpose Specification
Air Cutting/Drilling Breathing Grade > 99.9996% purity; filtered to ISO Class 1
particulate level
Air Cutting/Drilling Compressed Instrument-grade air filtered and dried to
ISO 8573-1:2010 Class 1, 2, 1 (< 10 1.0–
5.0 µm particles/m
3
; < –40 °F dew point;
< 0.01 mg/m
3
oil vapor).
Argon Welding High Purity Grade > 99.998% purity; filtered to ISO Class 1
particulate level
Helium Welding High Purity Grade > 99.997% purity; filtered to ISO Class 1
particulate level
Nitrogen Cutting/Drilling High Purity Grade > 99.9500% purity; filtered to ISO Class 1
particulate level
Oxygen Cutting/Drilling Ultra Pure Grade > 99.9998% purity; filtered to ISO Class 1
particulate level