Welding goggles ??

[BillK]

Hey guys,
I have done a fair amount of mig welding and have a nice helmet for that purpose. Other than some cutting and general burning of broken bolts etc, I have not done any gas welding.

I recently have purchased a cast iron spray welding outfit for various repairs and modifications on cast iron engine parts. The problem I am having is that I cannot seem to tell when the piece I am welding is getting to the "cherry red" temperature. I have tried it a couple of times with just a pair of clear safety goggles and its great, but I know I need some level of shade for any long term use.

So, what do you guys use when you are gas welding ?? Is there a particular goggle or shade designed to allow you to see the metal heating up ? Or is it just an experience type deal ?

TIA

[KINGWELD]

Get some good gas welding goggles that you like and fit you. Jackson and others make nice ones that will work well(even if you ware glasses). As far as a lens I'd try something on the order of a shade '5'. Don't forget to use cover plates either side of your filter plate(shaded lens). Any good welding supplier will have a good selection of goggles and filter plates. Yes you need protection from UV rays of the O/A flame. Have fun and I hope this helps. Jim

[PTSideshow]

They should also have the full flip up face shield, same as a grinding shield. Only in a shade 4 or 5. It helps if you are doing a lot of starting and stopping. and have to wear glasses. I have a pair of the single lens welding goggles on the head ban and they are great to, but become a pain if you have to pull and lift them up over eye glasses more than a couple times.
My face shield is made by Jackson. From the LWS

[loose nut]

Forget the goggles, take a plain old cheap welding shield (flip up type) and trim off the bottom a bit, so it just comes down to the chin, and put in a #4 glass. This works better and will protect the face from heat and splatter.

[JoeLee]

I have a roto tec spray weld kit. Haven't done much with it. The powders are not cheap. They do have different temperature crayons that are used for indicating different temperatures. You heat your part up and if the crayon melts or leaves a mark then your part is at the desired temp, if not keep heating.

JL............

[form_change]

I think it's a bit of an experience thing and as JoeLee suggests using crayons or other temperature indicators until you get used to what heat looks like through a tinted lens may be the way to go.
I know what you mean though as I'm trying to do something similar myself.

[fortcollinsjerry]

Forget the goggles, take a plain old cheap welding shield (flip up type) and trim off the bottom a bit, so it just comes down to the chin, and put in a #4 glass. This works better and will protect the face from heat and splatter.

Great idea Lose Nut. WHen I inherited my welding equipment it came with two helmets, a Sellstrom with a 2 X 4 flip up gold coated window and a Huntsman Anser with that 4 X 5 window. I have no idea about quality of either but which ever #4 lense is least expensive I'll replace and use. Having a little eye/sight protection sounds like a good idea that I had never considered doing OX/ACT - although I would never think of strinking an arc with my MIG or Lincoln. Again - good idea. Thanks