All MetalShaping

All MetalShaping (https://allmetalshaping.com/index.php)
-   Welding Sheet Metal (https://allmetalshaping.com/forumdisplay.php?f=52)
-   -   Chemsharp - tungsten sharpening (https://allmetalshaping.com/showthread.php?t=14339)

billfunk29 10-24-2015 10:56 AM

Chemsharp - tungsten sharpening
 
Here is an alternative to grinding tungsten. I like to use it when I get new box of tungsten. Pretty quick to do the whole box. I also use the propane torch as in the video.
https://www.youtube.com/watch?v=SSSaJ-Ke7as

Stretch 10-24-2015 02:26 PM

Never seen that before - interesting. How well does the tip weld after chemical sharpening? Looks like it might weld well on AC. How about DC? Do you get a nice, tight arc?

AllyBill 10-24-2015 03:28 PM

Looks like a whole lot of messing about to me. Been TIG welding for thirty years and never had a problem grinding a tungsten with whatever grinding tool is nearest. Besides, different shape points work best for different jobs so one size for all is less than ideal in my opinion.

Will

Gareth Davies 10-24-2015 05:11 PM

Quote:

Originally Posted by AllyBill (Post 118420)
Looks like a whole lot of messing about to me. Been TIG welding for thirty years and never had a problem grinding a tungsten with whatever grinding tool is nearest. Besides, different shape points work best for different jobs so one size for all is less than ideal in my opinion.

Will

Agree with that. I honestly can't see the benefits as it looked extremely slow. If anyone was worried about grinding contaminants they'd get a different sort of grinding wheel that was safe to use. I can't see many commercial welding shops adopting a process as slow as that. I bet the fumes off it are pretty nasty as well.

Ranchero50 10-24-2015 06:14 PM

Ditto, way too many steps and prep work to do it. I'll argue my battery powered drill and belt sander does at least as nice a job in a fraction of the time.

AllyBill 10-24-2015 07:17 PM

Quote:

Originally Posted by Ranchero50 (Post 118422)
Ditto, way too many steps and prep work to do it. I'll argue my battery powered drill and belt sander does at least as nice a job in a fraction of the time.

I keep worn out, 3-inch Roloc discs for tungsten sharpening. They leave a good finish then I arc-up on a piece of scrap to ball the end, scratch the cooled ball on the scrap to be sure it strikes up nicely on the job and we're good to go.
Am I the only guy who touches down or shoves the filler into the tungsten from time to time? I want to be back on with the job quick as I can.

Will

dwood 10-24-2015 08:28 PM

I've been TIG welding for over 40 years. Virtually all the time I need to sharpen a tungsten it is because I screwed-up and touched the puddle and it left a bunch of melted metal all over the end.

I use my 1" X 42" vertical belt sander. Takes all of about 15 seconds to replace the point.

weldtoride 10-25-2015 08:49 PM

It's sodium nitrate, not exactly a newcomer to the market, it's been around for a while. I know a guy who uses it, it's fast if you use the shorting method, you leave your tungsten in the torch but extend it, and then short it to heat it red hot. Repeated dipping and depth of dip sharpens the angle.

Here's a vid from the manufacturer of the above mentioned product, more than one way to heat the tungsten is described:

https://www.youtube.com/watch?v=drgaJVKxJxw

If you want to try it, there are some concerns out there re: the fumes and possible weld contamination for critical welds.

Metlmodr 10-25-2015 09:42 PM

Quote:

Originally Posted by weldtoride (Post 118452)
It's sodium nitrate, not exactly a newcomer to the market, it's been around for a while. I know a guy who uses it, it's fast if you use the shorting method, you leave your tungsten in the torch but extend it, and then short it to heat it red hot. Repeated dipping and depth of dip sharpens the angle.

Here's a vid from the manufacturer of the above mentioned product, more than one way to heat the tungsten is described:

https://www.youtube.com/watch?v=drgaJVKxJxw

If you want to try it, there are some concerns out there re: the fumes and possible weld contamination for critical welds.

Almost correct!

It is actually sodium nitrite (NaNO2), not Sodium Nitrate as stated above.

weldtoride 10-26-2015 10:59 AM

Thank you, big difference after I checked.

Personally, the fume thing stops me from using this, too many air born hazards in a welding environment to begin with.


All times are GMT -5. The time now is 12:31 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.