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Anonymous Poster

Weld Splatter

08/20/2009 6:12 AM

I work for a large automotive supplier that supplies welded assemblies , the problem with welding is that the welding fixtures components accumulate weld splatter which causes problems with the fixtures or the welded assemblies holding tolerances. we are spend a large amount time removing splatter from the fixture components , we have tried making the components from several types of materials copper, bronze, harden steels, ect. My question, is there a good type material to make the fixture components from that might repel the weld splatter??

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#1

Re: weld splatter

08/20/2009 7:26 AM

Is it feasible to tig weld the componets? Also there is a spray out there that will repelle the splatter

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Guru

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#2

Re: Weld Splatter

08/20/2009 9:12 AM

Did you consider painting the jigs/ fixtures with high temperature paints? quite a few are available that can with stand it.

Another costly solution may be plasma spray of any non-bonding materials like ceramics.

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#3

Re: Weld Splatter

08/20/2009 4:10 PM

Try coating or guarding your fixtures to allow for easier removal/control of weld spatter.

Additionally look into the way you are welding as if spatter is excessive you may have the wrong feed speed, heat, angle, gas, surface preparation, surface contamination, etc, etc. Prevention is better than cure.

Is this automated robot or manual welding? What type of welding? What materials and surface preparation?

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#4

Re: Weld Splatter

08/20/2009 11:21 PM

If you are using GMAW process then you should select mixed gases Argon 80%+20%CO2 in place of CO2,or otherwise you can select flux cored wire in place of solid wire for minimise the weld splatter problem.

you can choose other welding process to avoid splatter like GTAW but this process is very slow.

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#5

Re: Weld Splatter

08/21/2009 8:24 AM

Try a product called "stop splatter" or "splatter stop", it works fine.

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Guru
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#6

Re: Weld Splatter

08/21/2009 9:53 AM

Or perhaps you should invest in welders that produce no spatter such as Lincoln SST MIG technology.

http://www.industrysearch.com.au/Products/STT-Waveform-Control-Welder-7251

Expensive but depends on how much down time to production your spatter cleaning is causing you.

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#7
In reply to #6

Re: Weld Splatter

08/21/2009 12:51 PM

You have not indicated the type of gas used, material - whether it is CS or SS, parameters like wire size, current, voltage, etc. The spatters will be more with CO2 gas on Carbon steel and it can be controlled by selecting Argon, or Argon (80%) and balance CO2 for globular or spray transfers. Further you can apply Anti-spatter compound on the fixture surfaces and it is available both in paste or spray form. There are many brands available in the market. Anti Spatter Compound: Spat Free product is non-toxic, non-flammable, non-polluting and Silicone free water based Anti Spatter cream compound cum flux. It is applied before the welding operation to achieve the following benefits : - Original surface is retained without any chipping and grinding. - Better refined weld metal with minimum gaseous & non-metallic inclusion. - Formation of less quantity of spatters / slag that does not stick to the surface thereby, removal of spatter / slag comes easier. - Cleaning cost is drastically reduced by about 70 %. - Environment friendly product as there is no possibility of dust floating in the working place because of absence of chipping & grinding operation. - Safety of is also improved and it can be used on the welding surface also.

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#8
In reply to #7

Re: Weld Splatter

08/21/2009 8:46 PM

I am not the poster ,If he wishes to supply more information about his welding processes I am sure he will receive more comments.

One would have to think the factory is reasonably well versed in welding technology unless it is some sort of backyard operation with limited resources.

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