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Mig Welding
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Here are some more information for Mig Welding:
Why has my MIG wire gone bad all of a sudden?
"I've been using this MIG wire for the last six months without a problem". "Now after having used many spools the wire its gone bad". "What's happened?
Sound familiar? The trouble here is that the person or company that you bought your MIG wire from cannot guarantee you quality.
Did you buy the cheapest stuff you could find? Ha-ha...As the saying goes, "he who buys on price, and price only, gets what he paid for".
Sounds harsh but that's the truth. Quite often you find end users happily welding away with their current brand of MIG wire. When all of a sudden they go and open up the next new pallet of wire that just arrived, slap it on the machine and the welds are all over the place.
Spatter, burn backs wire not feeding properly and so. What's going on, they think to themselves. "Ahh, I know, it must be a worn contact tip". So off they go and replace the contact tip with a new one. But no, sure enough same problem. "Well, it's been a while since I change the liner". So off they go and do that. Yet sure enough the same problem is still there.
They think to themselves, "well I've changes everything else, it can't be the wire. It's brand new and I've been using it for over six months without any trouble".
This is such a common thing to come across in the welding industry, and it affects everyone throughout the world. Whether you're in the USA, Australia, New Zealand...anywhere.
So what is it, what's the problem?
The problem is quality.
The person who is supplying your wire can not guarantee you quality. But you think to yourself, it can't be the wire, no way. I've been using this (xxxx) brand wire for ages. They are a huge massive company, they sell MIG's, TIG's all sorts of welding gear no way can it be the wire that's giving me problems....can it?
The trouble is that unless you are guaranteed the quality of you welding wire your "up a creek without a paddle", so to speak.
With so many people selling welding wire these days it is extremely hard to come by a quality wire. The majority of goods made in the world today come from China or India. With huge populations and low wages, they are the cheapest places to buy things from.
There are over three hundred manufacturers of welding wire in China alone. What does this mean to the quality of your MIG wire?
This means that if the brand of wire on the box is (xxxx) they are not the manufacture of it. You need to ask the sales person....ARE YOU THE MANUFACTURER OF THIS WIRE?
Because what happens behind the scenes is the company you bought the wire from has a big argument with their supplier in China or where ever. And they say stuff ya....well go next door and buy from them. Hey with over 300 manufacturers in China alone they can pick and choose who they like.
So they change their manufacturing supplier, and this happens all the time. But when they change manufacturer the quality also changes. That's why your wire has gone bad. And that's why they can't guarantee you the quality.
Simple as that.
Each time they change their manufacturing supplier the quality changes as well. There is a huge difference in quality of wires.
Okay so what do I do now, which wire do I buy?
The secret is to buy a wire that is supported by the manufacturer. You need a manufacturer that has been producing quality welding wires for years and years so that they have the art perfected.
Did you know that there are general "quality" mig weldng wires and precision MIG wires? Which type of wire do you think that the big boys use? When I say that I mean vehicle manufacturers, earth moving manufacturers and so on, companies that use it by the tonne. What do you think they are after in a welding wire?
They are after:
o Precision
o Reliability
o Repeatability
o Consistency
o Quality
o Accuracy
How much money would Toyota or Mitsubishi or Caterpillar lose per minute if a welding machine was down? I sure bet it would be an awful, awful lot of money. These manufactures don't want a single welding machine in an assembly line to break down. Cause if one thing stops, the whole show stops.
How can I determine what a precision quality wire is?
To find out how, please visit mig welding wire. http://www.learn-how-to-weld.com/mig-welding/mig-welding-wire/
How to mig weld: The FREE mig welding guide for how to use a mig welder
Find out how to mig weld, quick, fast and easy? I'd like to show you how to get started using a mig welding machine and laying down some weld beads. Mig welding is really easy to do once you mig welder is set up right and feeding smoothly.
Practice, practice, practice
Yes, unfortunately like anything else you have to practice. But hopefully with a few of my pointers you won't have to do as much practice to get up and running.
Which wire to use?
Now for the home user or DIY welder you are probably better off to use what is called gasless mig wire.
As the name suggests, you do not need to use any shielding gas with this wire. So if you are welding at home, it means you do not have to spend money on renting a gas bottle.
Gasless mig wire
Every welding wire has a classification. In this case the classification that you are looking for is E71T-GS. So when you go to buy your gasless mig welding wire make sure it has that code on the box. Be careful though, because there is another code which looks very similar to that.
Solid mig wire
You can if you wish use a solid mig wire, and the code for that would be ER70S-6. This is the welding industry standard wire for general fabrication welding processes. You will also need to use a shielding gas for this wire otherwise the weld just keeps crackling and popping and nothing happens.
Welding gas choice
There are a few choices of which welding gas you can use. You can use 100% CO2, you can use 25% CO2 +75% argon (which is a very common mix), or even 100% argon.
Basically the pros and cons are the more CO2 gas you have in the bottle the deeper the penetration of the weld will be. And CO2 is much cheaper than the mixed gases. The downside is that CO2 generates the most spatter.
25% CO2 +75% argon is a good all round gas. The higher argon percentage of gas really does make a difference to the weld bead appearance compared to straight CO2.
Basically the more argon you have, the cleaner and smoother the weld will be. Your welding gas supplier will have some kind of chart so that you can see which gas mixtures are available. They even have these fancy try mixed gases now which are one part carbon dioxide, one part argon and one part oxygen.
Earth Clamp
Your earth clamp and where you clamp it to must be clean and free of any rust, mud, oil, paint or grease. Try to keep it as close to where you are welding.
Feed rolls
If you are using a gasless mig wire you need to use knurled feed rollers. For solid wire you need to use vee grooved rollers, and for aluminum mig welding use u shaped feed rollers.
Contact tips
Contact tips come in a range of styles and sizes. Make sure you use the right size contact tip for the right size wire.
Welding shrouds and nozzles
Each manufacturer of welding equipment have their own variety of welding nozzles. Some nozzles are designed for high current applications and are much larger in size. Some nozzles are tapered so that you can get them into tight spaces. You can even get special welding nozzles for spot welding with your mig welding machine.
To find out more about how to mig weld you can visit this great website where there are pictures, videos and more detailed information about mig welding.
About the Author
Next you need to find out more about how to mig weld and mig welding
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When Mig Welding how can you see what you are doing?
I've never done it before and I'm scared to try. I have to do it next week at a volunteer job only for this once but I'm still nervous of doing something wrong. My question is when you have a mask on (really dark) how can you see what you are doing?Any tips on this welding are greatly appreciated, even really basic things.
glad you asked, Mig welding is really a simple task if you can already stick weld. what you see is what you get with a mig. follow the following process and you'll do great.
if right handed hold the handle slightly to the left just enough to see the wire sticking out of the nozzle, weld to the left in an overlapping circular pattern usually between 1/4 and 7/16 wide the lens should be sufficient if for arc welding. a quick practice on scrap metal should ease your concerns quickly. you will see the deposited weld in the lens and no chipping needed
MIG/ TIG Welders
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