Suggestion Needed for Weld Cleanup--DynaFile?

M

munruh

Hot Rolled

Joined

Jan 3, 2011

Location

Kansas

• Aug 1, 2014

• #1

I have a couple hundred weldments coming through the shop that we need to clean them up before they go off to powdercoat. We are using a file to get the dingle berries and sanding the rough edges a bit. Has anyone here tried a dyna-file? Do they work good for where you use a file?

Thanks

 

A

aspp

Cast Iron

Joined

Feb 25, 2014

Location

California

• Aug 1, 2014

• #2

What material are you working with? For steels I like a needle scaler better than a sander, aluminum I would go with the sander or a scotch bright flapper wheel on a die grinder.

 

M

mTeryk

Hot Rolled

Joined

Jul 4, 2010

Location

corvallis,or

• Aug 1, 2014

• #3

munruh said:

Do they work good for where you use a file?
Thanks

Click to expand...

We use them a ton at work. Mostly for finishing brass brazed work but sometimes for weldments or other work. The variety of heads and belts allow you to get just the surface finish you need.

Each of our finishing stations has three, one with a course belt for material removal, one with scotch bright for smoothing and one with fine grit sandpaper and a large trampoline section for blending.

They pretty much replace files except where they don't fit.

 

M

munruh

Hot Rolled

Joined

Jan 3, 2011

Location

Kansas

• Aug 1, 2014

• #4

Material is mild steel. They probably don't work well removing dingleberries ?

 

WILLEO6709

Diamond

Joined

Nov 6, 2001

Location

WAPELLO, IA USA

• Aug 1, 2014

• #5

for really rough stuff hit with a wheel grinder, then go back with the dynafile for final finish... you can grind pretty crappy stuff with a dynafile, just get plenty of belts....

 

allloutmx

Titanium

Joined

Mar 6, 2013

Location

Rochester, NY

• Aug 1, 2014

• #6

I prefer a good DA grinder over a dynafile.
Especially for what they are getting for a dynafile $$$

 

M

mrjbug

Aluminum

Joined

Dec 22, 2009

Location

Winona

• Aug 1, 2014

• #7

As long as it's 1/8" or thicker we always use a needle scaler. Gets it all off.

 

S

Sea Farmer

Diamond

Joined

Mar 25, 2006

Location

Cape Cod, Massachusetts

• Aug 1, 2014

• #8

I use my dynafile a lot but you need to understand its strengths and weaknesses.

The belts are small 1/2" X 18" is typical, so they don't always last long. If the edge of a belt hits something hard or sharp and starts to fray, the belt will die quickly.

They don't hit inside corners well--fillet welds are better done with a profile file of your choice-triangular, etc.

They are superior to files on round work IMHO.

There is a huge assortment of belts for dynafiles, including non woven abrasive belts--for some applications and finishes this may be an advantage over filing.

 

A

adama

Diamond

Joined

Dec 28, 2004

Location

uk

• Aug 1, 2014

• #9

Other options getting it shot blasted, that will remove typical splatter just fine, notice the word shot there, not grit!! Big difference in splatter removal capabilities.

 

tnmgcarbide

Diamond

Joined

Jul 6, 2004

Location

N. GA- 33.992N , -83.72W usa

• Aug 1, 2014

• #10

i use these - 245042 Rex-Cut Cotton Fiber DCW 4-1/2 x 1/4 x 7/8 Type 27 A36GFX [RCP-245042] : Cleaning, Blending, & Polishing - $12.65 EMI Supply, Inc

they blend and remove slag without gouging .

 

M

Mike C.

Diamond

Joined

Nov 25, 2004

Location

Birmingham, AL

• Aug 1, 2014

• #11

Are you using one of the anti-spatter sprays on the work? I started using that at this hydraulic shop I am at now and it is pretty amazing. Any bbs that do end up on the work where it has been sprayed can be wiped off with a rag. It would probably more than pay for itself in the labor it would save. We use the 90 degree die grinder and sanding discs/scotchbrite pads for most all smoothing and slicking of welds, when required. We have dynafiles, but use them pretty much only for knocking down fill welds on damaged rods before polishing.