Would anyone know if there is a tint available for plastic lenses that would meet welding or electrical arc safety specification?
Would anyone know if there is a tint available for plastic lenses that would meet welding or electrical arc safety specification?
As the wife of someone that welds during his job, I wouldn't recommend anything less than a full face helmet. I've seen the damage that hitting a bad spot in a weld can do (they tend to pop and send hot metal flying).
Full faces have come a long way and the price has dropped for even the auto darkening versions.
Sorry I don't have an answer to your original question
the goggles are a specific use and are behind a shield
If I am correct, there's more to these lenses than the tint. Plastic will not stop IR light, sodium flares, etc even if you tint it dark. The filtering properties are properties of the material and not of the tint. You could tint cr39 back as night and still be receiving plenty of radiation.
www.callbpi.com . They might be able to answer your question. Chris Reyser also might be able to help.
Good luck to you!!
:cheers:
Days where my gratitude exceed my expectations are very good days!
Contact Corning Glass Works, somewhere in my forgotten books of forgotten knowledge I saw a chart of theirs. It listed every possible (hundreds) of tints, glass additives, uses for each and transmission codes for each. Also had an index of refraction for things I didn't even know light could pass through, like silver and gold.
Chip
...at least some of the filtering properties depend on the density of the material, which is why so many different kinds of glass are used.
Some webpages that may be of interest here ...
X-CEL OPTICAL: Filter Glass for Occupational Eyewear Protection
X-CEL OPTICAL HOME PAGE
ATHERMALTM welding protection by SCHOTT
Corning Ophthalmic
Could that next step up the career ladder get you in "over your head"? Explore this topic under the new post title An Inconvenient Promotion.
Welders glasses.......................
Welders glasses used to be in glass. Glass will pit when touched by flying sparks. However CR 39 will not pit under the same circumstances.
However there is no tint that will absorb infra red and most lenses will or should at least absorb UV and be of a dark green color which is no problem to achieve.
If pitting is the problem why not put plano CR 39, or poly or some plastic in front of welding glass lenses?
Chip hit it on the nose. The expensive glass shield is protected by a throw away insert.
There was a company (Weldco...something like that) in Barberton Ohio that made these inserts. You bought them at welding supply stores. The inserts were sold like 3 to a pack. Once the insert was pitted past the wearers acuity threshold, the welder replaced the insert.
I believe the company was bought out in the last 10-15 years. They made other specialty CR39 items too.
Jim
Jim Schafer
Retired From PPG Industries/
Transitions Optical, Inc.
When you win, say nothing. When you lose, say even less.
Paul Brown
There are currently 1 users browsing this thread. (0 members and 1 guests)
Posting Permissions
Reply With Quote
Bookmarks