Grinding wheel for tungsten electrode
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  1. #1
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    Grinding wheel for tungsten electrode

    I bought a bench grinder just for grinding the tungsten on my tig welder. The wheel that's on there turned to powder grinding a tungsten. Is there a certain type of wheel you should use?

  2. #2
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    Re: Grinding wheel for tungsten electrode

    I think what is more important is that you grind it on a dedicated wheel only for tungsten, use a fine-er wheel and grind the tungsten tangential to the wheel.

    Best --> Diamond wheel
    Good--> Silicon carbine (green)
    Fair/Common--> Aluminum oxide, this is your standard stone, yes it will groove, just dress it when needed. They are fairly cheap.

    Tungsten is very hard and will wear out any wheel in short time.

  3. #3
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    Re: Grinding wheel for tungsten electrode

    Quote Originally Posted by zkling View Post
    I think what is more important is that you grind it on a dedicated wheel only for tungsten.
    Why????
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  4. #4
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    Re: Grinding wheel for tungsten electrode

    Quote Originally Posted by zkling View Post
    I think what is more important is that you grind it on a dedicated wheel only for tungsten, use a fine-er wheel and grind the tungsten tangential to the wheel.

    Best --> Diamond wheel
    Good--> Silicon carbine (green)
    Fair/Common--> Aluminum oxide, this is your standard stone, yes it will groove, just dress it when needed. They are fairly cheap.

    Tungsten is very hard and will wear out any wheel in short time.
    The reason I asked is I noticed some wheels Ive used in the past lasted longer. I bought this one just for my tig welder so I wanted something god just for tungsten.

    Quote Originally Posted by shovelon View Post
    Why????
    From what I was told in welding school it will contaminate the tungsten.

  5. #5
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    Re: Grinding wheel for tungsten electrode

    Quote Originally Posted by shovelon View Post
    Why????
    Because if you grind any type of steel on it, it will embed in to the tungsten when you sharpen it with the same wheel. I have used tungsten that has had steel ground on it before I didn't notice a difference. I was told the same in school as well.
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  6. #6
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    Re: Grinding wheel for tungsten electrode

    I found a little orange "bench" grinder over at Harbor Freight. Three inch wheels and a cost of $9.00. They also have a four pack of diamond wheels almost the same size. Just drill out the center hole to fit the shaft on the grinder and you are good to do.

    Oh yeah, the diamond wheels cost $9.00 also!

    Been using mine for about 3 years now...

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  7. #7
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    Re: Grinding wheel for tungsten electrode

    Quote Originally Posted by kevinacaron View Post
    I found a little orange "bench" grinder over at Harbor Freight. Three inch wheels and a cost of $9.00. They also have a four pack of diamond wheels almost the same size. Just drill out the center hole to fit the shaft on the grinder and you are good to do.

    Oh yeah, the diamond wheels cost $9.00 also!

    Been using mine for about 3 years now...

    You need to resize your photos smaller or it cuts off your texts also

    But yes i have been looking at one of those but could not find a wheel of that type for it you say both are available from HF...
    I have to go looky see

    Thanks
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  8. #8
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    Re: Grinding wheel for tungsten electrode

    Quote Originally Posted by shovelon View Post
    Why????
    Is that true or an old wives tale?

    I never understood how a softer metal could be imbedded in a harder metal. But I've always used a dedicated wheel because that's what I've always heard.

  9. #9
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    Re: Grinding wheel for tungsten electrode

    Quote Originally Posted by shovelon View Post
    Why????
    Contamination issues. It is usually not much of an issue at home where you know what has been ground on the wheel, but in a large shop environment, you may be putting who knows what junk onto the tungsten. I have walked up to grinding wheels that were plugged full of aluminum or other mysterious crap. and of course no dresser in sight.

  10. #10
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    Re: Grinding wheel for tungsten electrode

    Quote Originally Posted by dallas_ View Post
    Is that true or an old wives tale?

    I never understood how a softer metal could be imbedded in a harder metal. But I've always used a dedicated wheel because that's what I've always heard.
    Yeah, it is like using cheese to cut a diamond.

    Dedicated grinding wheels don't make any sense to me. So a grinding wheel rubs steel or alum onto my tungsten then grinds it right off. Cool!
    "Nothing welded, nothing gained."
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  11. #11
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    Re: Grinding wheel for tungsten electrode

    If I have to use the fine grinding wheel (that I use for tungsten) for something else, I always carry a "sacrificial tungsten" on hand, usually a 1/8" diameter, and grind that FIRST. That way if anything is gonna get contaminated, it's gonna be that one (usually a pure 1/8" tungsten since I have no use for it, lol). Grind that all over the wheel first, then sharpen my welding tungstens.

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  12. #12
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    Re: Grinding wheel for tungsten electrode

    Ive been using my grind everything wheel for tungsten. I scooped up a little 4" bench grinder at a auction just for my welder. How a soft material would get embedded in a harder one I don't know. Ive been grinding all kinds of crap on the same wheel I do tungsten's on and I don't know if I noticed a difference or not.

  13. #13
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    Re: Grinding wheel for tungsten electrode

    get a tungsten sharpener... if not, use a xmas tree dye grinder deburrer
    Sal

  14. #14
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    Re: Grinding wheel for tungsten electrode

    Name:  sharpener.jpg
Views: 1081
Size:  10.6 KB

    tungsten sharpener... can get a good 2nd hand deal im sure
    Sal

  15. #15
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    Re: Grinding wheel for tungsten electrode

    Ive seen those but if you get a booger on the end of the tungsten then it wont fit in the hole

  16. #16
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    Re: Grinding wheel for tungsten electrode

    For those asking how a softer metal can get embedded into a hard tungsten electrode, look no further than your aluminum oxide (or silicon carbide, or diamond) grinding wheel. Your grinding wheel is considerably harder than any metal you grind with it, yet after grinding, you will find particles of metal embedded all over the surface of the wheel: the bits of softer metal get lodged in the surface "pores" of the wheel.

    If you were to examine the ground point of your tungsten electrode under a high-powered microscope, you will see that the surface is not smooth but rough with grinding scars and ridges. If there are any other metals embedded on the surface of your grinding wheel, they will get transferred to the tungsten and get embedded into the tiny pits and ridges of the tungsten.

  17. #17
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    Re: Grinding wheel for tungsten electrode

    Quote Originally Posted by Michaeljp86 View Post
    Ive seen those but if you get a booger on the end of the tungsten then it wont fit in the hole
    It is a problem with them, but it's controllable.

    The only way I get a booger like that is if I dip on steel repeatedly and don't regrind ASAP. Never with Al, cause once you dip, the parties over.

    Any tungsten with a booger that big should be snapped of anyway.
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  18. #18
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    Re: Grinding wheel for tungsten electrode

    I have a garage sale grinder with a shaft on each side, one side has a green wheel for roughing and the other is a very fine diamond wheel for finishing, it is used just for sharpening my electrodes. A thing to keep in mind that diamond wheels should not be used dry.I rigged up a drip type wetter a plastic bottle with a old gas ball valve with a piece of 1/4" tube bent to drip on the wheel.

  19. #19
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    Re: Grinding wheel for tungsten electrode

    Quote Originally Posted by SpyGuy10 View Post
    For those asking how a softer metal can get embedded into a hard tungsten electrode, look no further than your aluminum oxide (or silicon carbide, or diamond) grinding wheel. Your grinding wheel is considerably harder than any metal you grind with it, yet after grinding, you will find particles of metal embedded all over the surface of the wheel: the bits of softer metal get lodged in the surface "pores" of the wheel.

    If you were to examine the ground point of your tungsten electrode under a high-powered microscope, you will see that the surface is not smooth but rough with grinding scars and ridges. If there are any other metals embedded on the surface of your grinding wheel, they will get transferred to the tungsten and get embedded into the tiny pits and ridges of the tungsten.
    Just so happens I have a good microscope, maybe Ill see what I can see some time.
    Quote Originally Posted by thphtm View Post
    I have a garage sale grinder with a shaft on each side, one side has a green wheel for roughing and the other is a very fine diamond wheel for finishing, it is used just for sharpening my electrodes. A thing to keep in mind that diamond wheels should not be used dry.I rigged up a drip type wetter a plastic bottle with a old gas ball valve with a piece of 1/4" tube bent to drip on the wheel.
    Good idea, Ill have a booger grinder on one side and a sharpener on the other.

  20. #20
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    Quote Originally Posted by Michaeljp86 View Post
    it wont fit in the hole
    Thats what she said... And the entry is pretty wide for tungsten, would have to be like big foot's booger
    Sal

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