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Tig welding



KHK
12-05-2008, 05:18 PM
Does anyone know the difference between a white ceramic tig cone and a pink ceramic tig cone?? I have always chose the cone based on the size of the nozle and not the collor.

YES I know, one is white and one is pink!!!
is there anyother difference?

keith

Gadget
12-05-2008, 05:39 PM
Good question Keith, I will be watching for the answer.
Dan

JOEBIPLANE
12-05-2008, 06:18 PM
Dan,
you are truely unique ! :lol:
We count on you to know the answers we seek for these fabulous machines.... 8O
You frequently respond to the question with a response something like
" yea... i can't wait for someone to answer that question' :o 8O :roll:
or
" that is certainly a good question... Simon will probably get us the answer" :mrgreen: :P :wink:
Just kidding, of course/
...your assistance is ALWAYS Most appreciated... Keep up the good work
Joe Larsen :D

Gadget
12-05-2008, 06:34 PM
Just don't want you to think I am ignoring the post and I am really interested in the answer. Maybe I will do some research.
Dan

Gadget
12-05-2008, 06:38 PM
Joe,
You embarassed me enough to do some digging. :wink: :wink:


Here is what I found.

About TIG/GTAW Nozzles
Alumina (pink), Lava (brown), Pyrex and Quartz (glass) TIG Torch Nozzles

TIG/GTAW gas nozzles (also called TIG cups) are available in a wide variety of materials, shapes and sizes depending on your TIG torch and welding application.

The gas outlet or orifice of a TIG nozzle is measured in 1/16” (1.6mm) increments. For example a No. 4 nozzle is 1/4”, or 4/16” in diameter. The gas nozzle orifice is located at the end of the nozzle farthest from the torch body. With the exception of a specialty torch, such as one for micro TIG welding, the smallest nozzle is the No. 3, 3/16” and the largest is a No. 16, or 1” nozzle.

The most common TIG cups are made of Alumina Oxide and are “pink” in color. Alumina is a high- temperature, nonconductive pink ceramic material. This material is injection-molded and mass-produced, which is why the alumina nozzles are less expensive than those made with other materials. Alumina nozzles are durable and good for general TIG welding applications. Extreme heat generated from high amperage applications can cause a wide temperature difference from the front of the nozzle (tungsten electrode) to the back (torch body) resulting in thermal shock, which can cause the nozzle to crack, or in extreme cases blow the orifice end off.

Lava nozzles are tan/gray colored, Lava is a high-temperature, nonconductive clay material that is machined on a lathe to make special sizes. This process lends itself to odd-shaped TIG cup like the long (L), extra-long (XL), and extra-extra-long (XXL) nozzles. Lava TIG nozzles work well in specialty TIG welding applications with high heat but don't work as well in confined areas with excessive reflective heat, which can cause the nozzle to expand and contract, and ultimately break.

Glass nozzles consist of two types: Pyrex a low-temperature, nonconductive glass material, and Quartz a high-temperature, nonconductive glass material. These glass materials are hand-blown to make nozzles for specialty TIG torches for micro welding, and for large purging nozzles. Because glass nozzles can’t be threaded, you need to convert your "standard" TIG torch with modified collets, collet bodies or gas lens collet bodies to accept a “push-on” glass nozzle.

Hope this helps.
Dan

fl70
12-06-2008, 09:10 AM
Dan, nice job on the research and post.
Thank you for the info.

KHK
12-06-2008, 01:20 PM
Thanks Dan.

The cups that I have were made by LINDE and are in standard sizes. They are about 20 years old. I looked on the LINDE website and found only pink cups, so maybe LINDE discontinued this type of cup long-ago. They seam to work on all metal types, so I will continue to use them.

Thanks for your help!!!

keith