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> Welding question
PeeGreen 914
post Mar 22 2009, 10:17 PM
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So I am welding in the Tangerine Racing inner consol reinforcement. If I have the welder set on three it doesn't bite into the ear. If I have it set on four it bites but it blows holes in the new piece. I was able to get two holes filled and they are definitely welded on. However, I am wanting to know before I do more if going on the four setting will be right and not damage anything. Three just doesn't seem to cut it.
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So.Cal.914
post Mar 22 2009, 10:25 PM
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I know this is going to sound silly but run a hundred foot extention for the welder and use #4 setting.
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PeeGreen 914
post Mar 22 2009, 10:28 PM
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Really? (IMG:style_emoticons/default/confused24.gif)

Now what kind of extension cord are you talking about?
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PanelBilly
post Mar 22 2009, 10:43 PM
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If you turn it up to 4 can't you increase the feed rate to make up for the heat?
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brant
post Mar 22 2009, 10:49 PM
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the extension cord is actually good advice.

or... I'd set it to 3 and then turn up the wire speed with the 3 setting
more wire speed equals more heat for me.
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PanelBilly
post Mar 22 2009, 10:53 PM
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I thought more wire reduced the heat?
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So.Cal.914
post Mar 22 2009, 10:57 PM
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QUOTE(Phoenix 914-6GT @ Mar 22 2009, 09:28 PM) *

Really? (IMG:style_emoticons/default/confused24.gif)

Now what kind of extension cord are you talking about?


Between the wall and your welding machine. Cuts down on the amps making it to your welder.
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dbgriffith75
post Mar 22 2009, 11:02 PM
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QUOTE(So.Cal.914 @ Mar 22 2009, 11:25 PM) *

I know this is going to sound silly but run a hundred foot extention for the welder and use #4 setting.



QUOTE(Phoenix 914-6GT @ Mar 22 2009, 11:28 PM) *

Really? (IMG:style_emoticons/default/confused24.gif)

Now what kind of extension cord are you talking about?


He's right... and it depends on the draw of the welder; but as a general rule of thumb the heavier the cord the better. If you just have a little home welder that runs off of 110, a 12 or 10 gauge extension cord should do it; if it runs off of 220 or higher, get your billfold out and be prepared to pay. Even a 25 ft cord can get expensive.
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PeeGreen 914
post Mar 22 2009, 11:08 PM
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Thankfully it is a 110 and I already have some heavy duty cords. Just needed to know what kind of cord. I have a 100 ft general garden type cord or two 50 heavy duty cords. I'll use one of the 50 footers (IMG:style_emoticons/default/beerchug.gif)
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PanelBilly
post Mar 22 2009, 11:08 PM
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Isn't the longer extention cord going to blow the breaker?
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sixnotfour
post Mar 22 2009, 11:08 PM
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starting point
download here;
http://www.hobartwelders.com/service/orderlit.php


Attached image(s)
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PanelBilly
post Mar 22 2009, 11:17 PM
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Instructions, aren't they like asking for directions, anti-manly?
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sixnotfour
post Mar 22 2009, 11:20 PM
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Ya But better than filling his tub full of holes. (IMG:style_emoticons/default/poke.gif) (IMG:style_emoticons/default/welder.gif)
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brant
post Mar 22 2009, 11:20 PM
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QUOTE(PanelBilly @ Mar 22 2009, 09:53 PM) *

I thought more wire reduced the heat?



I find the opposite.

try running a test on your highest amperage and lowest speed.
you'll get no penetration at all
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PeeGreen 914
post Mar 22 2009, 11:26 PM
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(IMG:style_emoticons/default/piratenanner.gif) Thanks Jeff and others (IMG:style_emoticons/default/beerchug.gif)
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PanelBilly
post Mar 22 2009, 11:28 PM
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It would just burn back into the tip.

I guess I just start where I left it last and make little adjustments until I happy with the balance. Now I have to pull out some sheet metal and experiment.
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sean_v8_914
post Mar 23 2009, 01:19 AM
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here are some tricks of the trade to help prevent burn thru:
CLEAN YOUR GROUND POINT BETTER.
clean your weld area better.
use a heat sink pc of copper or an AL backing plate to absorb some heat.
put several clamps close to the area to suck out some heat. a stack of pennies under a clamp workds also.
add small spot weld dabs to the surrounding area first to increase metal amount near area. this helps absorb heat.
the 4 click number thing is voltage while wire speed controls amperage. increased wire speed increases amperage AKA heat to panel.
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sean_v8_914
post Mar 23 2009, 01:21 AM
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pre-heat the area with a torch. it does several things:
removes moisture
burns away contaminants that cause poping
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PeeGreen 914
post Mar 23 2009, 01:22 AM
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So are you saying if I have it on four but slow the wire speed that may help as well? The clamp thing makes sense as well. Thanks
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sean_v8_914
post Mar 23 2009, 01:39 AM
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not that simple. teh wire speed and voltage must match teh conditions. use teh guide as posted. back off on wire speed by 10%. your suspension ear is rusted from teh inside. the rust is iron oxide. teh oxigen expands violently. the pop blows the molten puddle away. I think the tiny spot welds to build up some material will be teh trick for you. welding to rusty metal is never text book proceedure.
the extension cord will make your welder put out less power on teh #4 setting but amperage will increase proprotionately...maybe, try it. my Miller digital welder is not fooled by such shenanigans.
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