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What Are Mig Mag Welders?
If perhaps you were in the metal working or building industry for any length of time, in all probability you'll have come across a piece of equipment known as a mig mag welder. Mig mag welders are certainly not as advanced and difficult to be familiar with as the label may make you believe. Here is how it goes:
Mig mag welders are really a sort of gas metal arc welding gear. Mig represents metal inert gas. Mag is short for metal active gas. Mig mag welders are in reality two varieties of welder which have been misnomered into one.
Gas metal arc welding was first developed for welding aluminium as well as other non-ferrous metals. It spread into the steel industry because it is a quicker technique of welding. However, inert gasses are very pricey this then limited the utilization of mig mag welders in smaller steel working workshops. Gas welding is actually mostly carried out with semi-inert gasses like carbon dioxide. Nevertheless it has not yet faded into obscurity.
Because mig mag welders do not call for or even use a shielding gas, it's not often made use of outside or even in places that the air flow may suddenly change.
The operating of mig mag welders is not really too complicated when handling basic metals like steel. The weld quality will invariably fluctuate because the quality of the weld is dependant, not only on the experience of the user doing the welding, but on the ecological conditions on top of that. The key to a good weld is always to keep your process constant and precise. This obviously becomes easier with more experience, but practice may be costly. If particular parameters are not observed, gas and electrodes could be wasted and they're expensive to replace. The more ferrous a metal, the more tricky it can be to keep the weld from becoming porous. This happens if a metal cools more quickly than gas bubbles produced in the welding process can get away. It can help to weld at a slower rate if you're handling a metal like aluminium that cools rapidly.
Like with all welding, it is important to have the correct protective clothing in place when working mig mag welders. The suitable clothing includes heavy leather gloves and protective jacket sleeves as well as protective eye wear. An ailment called arc eye is a kind of affliction of mig mag welders who do not wear the right eye protection. It's caused by the ultraviolet light which is emitted any time welding is performed and causes the cornea of the eye to become inflamed, and in extreme cases, the retina may become burned. Curtains made of pvc can be put in place to protect the other people in the room form the ultraviolet light emitted by the welding process. Another thing to bear in mind is that you are working with a dangerous gas. It is important to make sure that there is enough ventilation in the area you are working in.
Always be careful when welding and make sure you know what you really are doing and you are wearing the correct protective clothing in order to avoid burns and arc eye.
On a fifth wheel trailer, is it possible to re-weld the pin 16" further towards the front of the trailer?
My brother-in law has a f-150 with a really short box on it and him and his wife for some reason went and bought a fifth wheel. They started looking into hitches for it and found out that they are really expensive. (I know... they should have done their homework) I figured that they need about 16" of clearance to clear the cab and thought it would be cheaper to re-weld the pin on the trailer to extend that 16". If it is engineered and welded by a professional it should work... right?
I realize the hitch has to be in front of the rear axle. It's just the pin on the trailer that would be moving.
Modifying the pin or pin-box in anyway should not be done. It will void the warranty on the camper and could be potentially dangerous. The trailer was built the way it was. Moving that pin will alter the geometry of the pin box and more than likely, significantly weaken it.
Depending on the bed length, they either need a sliding fifth wheel or a Sidewinder to properly tow the fifth wheel. A Sidewinder does essentially what you are wanting to do, but it does with a properly designed piece of equipment that bolts onto the frame in the same manner as the existing pinbox. It adds 22" of clearance. See the picture and article below.
Feel free to contact me with more information on the truck and trailer and I can help you find some solutions.
http://www.etrailer.com/merchant2/graphics/00000001/pics/S/T/ST100-SW16K_500.jpg
http://www.etrailer.com/faq-sidewinder.aspx
Mig Welding - Short Arc - pushing vs pulling vs Spray Transfer
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