Needle Scaler for TIG Prep?

Welding Techniques, Theory, Machines and Questions.

Moderators: Harold_V, Scott

Post Reply
User avatar
SteveHGraham
Posts: 7553
Joined: Sat Jan 17, 2009 7:55 pm
Location: Florida

Needle Scaler for TIG Prep?

Post by SteveHGraham » Thu Apr 27, 2017 9:29 am

I was about to go to Home Depot and buy fifty gallons of naval jelly, when I realized I might have a better solution to removing mill scale.

Should I be using a needle scaler for scale removal? I mean, it is called a "scaler."

I've tried a flap disc, a knot wheel, and a 72" belt grinder, and they're all pretty slow.
Every hard-fried egg began life sunny-side up.

User avatar
10KPete
Posts: 390
Joined: Wed Sep 30, 2015 5:29 pm
Location: Nordland, WA, USA

Re: Needle Scaler for TIG Prep?

Post by 10KPete » Thu Apr 27, 2017 10:50 am

The problem with impact scalers is that unless the needles are very sharp they can drive impurities into the material. For your uses chemical or grinding/sanding would be the recommendation. Depending on the chemistry, deposits might be a problem also. TIG usually implies clean....

A hard disc on a 4" grinder is very effective.

Pete
Just tryin'

User avatar
warmstrong1955
Posts: 3277
Joined: Thu Mar 18, 2010 2:05 pm
Location: Northern Nevada

Re: Needle Scaler for TIG Prep?

Post by warmstrong1955 » Thu Apr 27, 2017 10:51 am

Big stuff, I use a grinder, with a regular wheel, not a flapper. Doesn't take a lot....just where the weld will be, and close to it. Flappers are more for 'finish' work.
I have used a needle gun, but just cause it was handy, or I was working in limited space. Not real fast, but they do work well enough for MIG & stick welding.

TIG welding, small parts, I use the blast cabinet. Blow off the parts & a quick hit 'em with a wire brush, by hand, and good to go.
I do the same for small parts I"m going to MIG or stick weld too. Generally, if the parts fit in the cabinet....that's what I do.
I don't use a needle scaler for TIG work.

Bill
Today's solutions are tomorrow's problems.

User avatar
SteveHGraham
Posts: 7553
Joined: Sat Jan 17, 2009 7:55 pm
Location: Florida

Re: Needle Scaler for TIG Prep?

Post by SteveHGraham » Thu Apr 27, 2017 11:58 am

What if I use a scaler followed by a flap disk to clean the metal off?

The grinder works but it cuts ruts and dips into the metal no matter how careful you are.
Every hard-fried egg began life sunny-side up.

User avatar
warmstrong1955
Posts: 3277
Joined: Thu Mar 18, 2010 2:05 pm
Location: Northern Nevada

Re: Needle Scaler for TIG Prep?

Post by warmstrong1955 » Thu Apr 27, 2017 12:05 pm

Try it....see what you get.
May work....I've never tried it.
Today's solutions are tomorrow's problems.

User avatar
GlennW
Posts: 6735
Joined: Sun Apr 15, 2007 9:23 am
Location: Florida

Re: Needle Scaler for TIG Prep?

Post by GlennW » Thu Apr 27, 2017 1:07 pm

Although I don't use hot rolled flat, I use these 2" sanding discs in 60 grit. The Scotchbrite discs are handy as well.
DSC00435.JPG
They are also available in 3".

Being rubber backed and flexible they don't gouge like hard discs do.
Glenn

Operating machines is perfectly safe......until you forget how dangerous it really is!

User avatar
Bill Shields
Posts: 5473
Joined: Fri Dec 21, 2007 4:57 am
Location: Somewhere in the World
Contact:

Re: Needle Scaler for TIG Prep?

Post by Bill Shields » Thu Apr 27, 2017 5:20 pm

A scaler is a scaler and does always get what you want for prep for any type of welding (doesn't need to be TIG).

Nothing beats a good hard grinding wheel and elbow grease...
Too many things going on to bother listing them.

J.Ramsey
Posts: 142
Joined: Wed Jul 25, 2007 12:19 pm
Location: S/E Kansas

Re: Needle Scaler for TIG Prep?

Post by J.Ramsey » Thu Apr 27, 2017 7:38 pm

You could buy a lot of material that didn't need to be descaled for the price of a needle scaler.In your welding table thread I offered to send you many lbs. of cold finished material for free but for some reason you seem to want to struggle on trying to do with less than ideal material.

User avatar
SteveHGraham
Posts: 7553
Joined: Sat Jan 17, 2009 7:55 pm
Location: Florida

Re: Needle Scaler for TIG Prep?

Post by SteveHGraham » Thu Apr 27, 2017 9:59 pm

I already have two needle scalers.

I totally missed the offer of free stuff. Sorry about that. Should I send a PM or has my window of opportunity closed forever?
Every hard-fried egg began life sunny-side up.

johnfreese
Posts: 176
Joined: Thu Jan 21, 2016 2:10 am

Re: Needle Scaler for TIG Prep?

Post by johnfreese » Fri Apr 28, 2017 7:42 am

An oxy-acy torch can be used to remove heavy mill scale. It has been a long time since I did it, but I believe I used the cutting torch for a wider path. For industrial size scale removal Harris Calorific made de-scaling heads that were quite wide. I suppose Airco and Victor made them as well.

J.Ramsey
Posts: 142
Joined: Wed Jul 25, 2007 12:19 pm
Location: S/E Kansas

Re: Needle Scaler for TIG Prep?

Post by J.Ramsey » Fri Apr 28, 2017 10:50 am

Offer still stands,PM me a shipping address.

User avatar
warmstrong1955
Posts: 3277
Joined: Thu Mar 18, 2010 2:05 pm
Location: Northern Nevada

Re: Needle Scaler for TIG Prep?

Post by warmstrong1955 » Fri Apr 28, 2017 10:52 am

Free is a very good price Steve!!

(Also my favorite)

:)
Today's solutions are tomorrow's problems.

Post Reply