May 5th, 2009 
admin 
Installing your mig welding wire is really quite simple. The first step is to make sure that you are using a very high quality mig welding wire. Why? You can have so many troubles with mig welding wire not feeding, burning back, excess spatter, birds nesting and so on.
Assuming there is no old spool of mig wire on the mig welder. The first think you have to do is physically open the welding machine or wire feed case up.p>
Then you will have to remove a cotter pin or a large plastic nut that is attached to the hub or axle the welding wire will slide onto. Now open up the box of mig wire, check that it is the correct size wire that you want to use and the correct type of wire. Also give it a quick glance and check for rust.
Lift up the spool and slide it onto the axle/hub. Replace the cotter pin or plastic nut.
Now go to the end of the mig welding gun and remove the nozzle / shroud. This will either pull off or screw off depending on the brand of welding torch. When it’s off, remove the contact tip by unscrewing it with pliers.
Set the nozzle and contact tip aside.
Go back to the mig wire, and in between the spool of mig wire and where the welding torch attaches to the front of the machine or remote wire feeder you will find the feed rollers or drive rollers.
There will be some kind of latch which can be flicked open. This action will raise the top feed roller and allow you to feed the wire onto the drive rolls.
Note that on the feed rollers there are usually two grooves. The wire needs to sit in one of these grooves. On the side of the feed rollers will be a punched marking showing what size wire to use in which groove.
Usually mig welding machines come with two different sized grooves. For example 0.9mm and 1.2mm which is 0.035” and 0.045”.
Make sure that the mig welding wire diameter fits the right sized grove in the feed roller. When running a precision welding wire you need to use the right feed roller groove for the correct diameter sized mig wire.
You can get away with using slightly different sized feed rollers when you run a cheapie low quality mig wire. Why is this? This is because the wire diameter tolerance will go up and down. So the wire will be getting thicker and thinner all the time which will compensate for the slightly wrong sized feed rollers.
I do not at all recommend this for anyone who is serious about making money in a production welding environment or welding and fabrication business. It will cause to much trouble.
Now you will have to carefully and I stress carefully find the end of the mig wire and hold onto it and don’t let go. If you do it will go whirl, whirl, whirl and you will have a big mess of mig wire all over the place.
With the end of the mig wire feed it into the driver rollers, you will have to go through a small feed tube. This helps guide the wire over the feed rollers.
Keep feeding the wire through past the driver rolls and into the start of the mig welding gun. Feed it through about a foot or so.
Lower and lock down the latch for the drive rollers, and adjust it right back to number one or the lightest setting possible. Then screw / adjust the tension down a bit.
Next if you are using gas, turn off the bottle to save your expensive welding gas lay you welding gun and cable out straight from the welder and pull the trigger. The wire will slowly fed through the liner and pop out at the tip holder. You can crank up the feed speed adjuster to get the wire through faster.
Now when the wire emerges put the contact tip or contact tube back on. Put the nozzle back on and trim the wire to about half an inch sticking out.
You are just about done now. Turn you gas back on. Now ideally you want the wire feed tension mechanism to be as light as possible so that it does not deform the shape of the welding wire. Deforming the shape of the welding wire will case premature wear on the feed rollers simply because of too much force. It will cause irregular wear on the contact tip and the welding wire will have tiny bits of material shaved and squeezed off it which will go down into the liner of the torch, and over time cause it to build up internal resistance which will cause more trouble welding down the track.
For more go here
http://www.learn-how-to-weld.com/mig-wire-installation.html
Cheers,
Peter Apalais
Watch the video related to welding
Learn the basics of welding from an expert in arc, tig and mig welding in this free DIY video. Expert: Malcolm MacDonald Bio: Malcolm MacDonald graduated from Connestoga College in 1968 from the Fitter Welding Program. He currently teaches a welding apprenticeship program. Filmmaker: Melissa Schenk
Help answer the question about welding
What's the cheapest way to build a quadricycle without welding?I need to make a quadricycle, to use it for a taxi. I have no idea how to make one. It needs to have room to carry two people pedalling, and at least one person along for the ride. I don't have the cash for welding rods, so I can't weld.
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How to weld: MIG, TIG and ARC
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nice weld
the metal isnt dirty enough to affect it. I certified with metal that looked like that
Hahaha I work at a Sawmill If the welders where I work cleaned all the metal before they welded they wouldnt be welding very much! I see them blast the metal quikly with a torch and then weld away!
My suggestion is that you take one of those 6 week welding courses at the local college.
You just don't start by reading a book.
Now i have an office job, but i have been a welder fitter for 20 years.
Make sure the first thing you buy is a fire extinguisher
The fabrication of hull of large ships is normally done by panels assembled into blocks then the blocks are assembled into sections of the vessel and finally the sections are joined to form the hull.
First, panels consisting of plates and stiffeners are made. In the fabrication of the panels submerged arc welding is most suitable since most of the welding are made on flat surfaces and these can be done using automatic welding machines. Several of these machines can be run by a single operator
.For the assembly of the blocks however, most of the welding operations are done manually because automatic welding machines may no longer be suitable.
Manual arc welding is also used in the assembly of the blocks to form a section of the vessel and also for welding the sections of the hull together.
making a triangle is a good technique
you use what is most comfortable you need to be able to see the puddle of molten metal to make sure you have good penetration and a decent looking bead I prefer a glass #10 and a glass cover plate how ever I'm thinking of buying a self darkening helmet as the price has come down to around $ 50 the auto darkening system has been on the market for about 15-20 years my brother bought one when they first came out and paid about $ 275 but the novelty wore off for him you can get a auto darkening from http://www.harbor freight.com Do not look at the light with out a welding lens as you will burn your eyes out!
You'll probably need a formal internship or apprenticeship. Especially in this economy, there's no shortage of experienced workers.
The WPS is the specific directions instructing the welder in how to execute the weld. It would specify method (mig, co2, stick, submerged arc, etc.), material for the base metal and the filler metal, directions of travel, position of the weld (horizontal, vertical, angular, etc), voltage, and similar variables.
Any WPS must be qualified to demonstrate that it produces the weld characteristics that are desired. It then becomes the recipe so to speak for each welder to follow.
A WPS is typically written by a person experienced in welding.
you may want to do a search on that (google). That may give u the help u need. Good luck!
I would like to see that weld cut open and sent to a lab for testing. HE DID NOT EVEN CLEAN THE METAL. Dirty welds have poor penetrations and are set up to fail. People, if you are too lazy to clean the metal, don’t weld.
Have you guys seen “You Can’t Weld This!”? It’s pretty funny… The guys over at WeldingMart com had it made! Do a youtube search for it
get an arc welder that has at least 200 amps dc
a name brand such as lincoln miller etc
practice with the 6013
switch to 7018 for higher strength
mig welds are strong but brittle they will break without warning if overloaded
and yes i know a lot of shops use the mig on everything
but if they see what i see all of the time they wouldn,t
arc welds will usually start cracking before they fail
on the lighter metals you are talking about the mig would be ok or if you plan to do any aluminum welding
but if you want to go to heavier metal later the arc welder is better
most of my welding is done on 3/4 inch or thicker metal
i will use my mig if it is nonstructural
if you think what i say about a mig is not true try fillet welds on 1/4 inch plate then bend them
welding is a physically demanding job, regardless of the type, most of the time you are sitting or standing for long periods of time, but it is also a great trade to have, if your asking about strength, it depends on the job, if you are production welding then you do not need to be very strong, but if you are a welder-fitter you would need alot of strength, because you would be handling material by hand and it can get pretty heavy, basically its up to you to know what type of welding you want to get into, and if you feel that it would be right for you in a physical sense. hope that helps with your question, good luck.
18v with 260 wire… I think you should use less wire, more like 190-210. But that’s just me. Weld would look flatter. Have a nice d@y! =)
very nice hand still
Dont hold….!!!!
Do not use welding glass. It does not protect camera lens at all.
Go to a store and buy appropriate filter even a bigger one and attach it to your camera.