Archive for the ‘Mig Welding’ Category

How can MIG help in speedy repairs?

Tuesday, March 9th, 2010

Are you tired of working fore hours on a repair and still unable to fix it up properly? Then the best choice for you to help saving your time and labor is MIG welding. You can be sure of the adaptability and speed with MIG Welding. Repairs and fabrications will sound simple and easy for you with MIG doing the trick for you.

In MIG, a nonstop shielding gas and consumable wire electrode and are fed continuously through a welding gun. Many companies have a preference over MIG welding for the reason that it is easier to carry out. Moreover it creates a spotless weld and it requires a less cleanup process than in the stick welding process. It also proffers enhanced control while operational with thin metal elements. A MIG welder machine is useful inside and for outdoor usage Though while working outdoor there is a chance of wind  blowing away the shielding gas and changing to a hollow electrode wire which is full with a flux compound and inversing the polarity of the welder, it can be used open-air.

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Mig Welding In A Nutshell

Monday, March 1st, 2010

MIG Welding is one among the simplest methods for any learner to become skilled at. It is normally that many freshers learn to do a lot of thing in a short time with MIG welders in just a few hours of time. Learners can keep it simple and learn the process to do great things easily. Apart from learning to run beads, there are actually a lot of things to learn about in the fundamentals of welding techniques.

Has anyone though about the time when MIG was used first? MIG came into being at the time of World War II. It was expanded and built further to assist manufacture of weapons and other gear needed for the war even quicker. MIG Welders were then used in the post-war for booming economy, more often than in stores and manufacturing industries.

MIG means metal inert gas. The flux on the electrode melts and gives a gas to guard the weld pool formed from the air in Stick Welding. We know that the hydrogen, nitrogen, oxygen, and other gases are present in the air and this will lead to weld defects if it is permitted to get into the weld pool. A reel existent of solid steel wire is given inside the apparatus, through a lining, then out of a contact tip in the gun.

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How MIG welders differ from Flux Core welders

Wednesday, February 24th, 2010

When you are about to purchase a wire feeder welder, you must primarily keep three things in mind. To begin with, you must see what you are planning to weld and secondly where you are welding. Finally you must check the surface finish of what you are welding. You must also select the appropriate welding method that would go with the type of metal you are welding.

You can begin your welding lessons with the Gas Metal Arc Welding popularly known as the MIG welding which uses a solid wire electrode for filler metal and an externally supplied gas from a high-pressure cylinder for shielding. It is used for welding commercial metals like low carbon steel, low alloy steel and stainless steel.

Once you get comfortable with steel welding, you can try your chances with aluminum welding equipments. Since aluminum is a very soft metal, cleanliness of the wire and base metal is important. Special welding techniques are often required to weld aluminum. On the other hand, the Flux Cored Arc Welding or the Flux core welder is different as it uses internal shielding gas and fluxing agents through a wire which has the needed materials in its core and produces them when heated.

While comparing the MIG welders and Flux core welders both has advantages and disadvantages. The MIG welders provides lower spatter levels compared to the flux core. But they don’t offer portability. The flux core welders are best suited got outdoor welding but the machines are highly sophisticated and a slight change can create a big difference. MIG welding is easy to learn while flux core is hard to master. The MIG welding has a soft arc which is not suitable for welding thicker materials. The flux core process is best suited for welding thicker materials as it is devoid of cold lapping.

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MIG Welding and its Types

Thursday, February 18th, 2010

Metal Inert Gas in short term known as MIG welding. It is popularly known as Gas Metal Arc Welding. In Mig welding process the usage of aluminum alloy wire with the combination of filler material and electrode are used by the welders. The process is one of the easiest processes that one can learn to weld. As the welder is capable of meeting all the parameters of welds with the help of machine it can also be termed as semi-automatic weld.

Mig welding can be carried on at two different processes they are:

  • Conventional Metal Inert Gas weld-
    In this process of welding it uses DC power source with constant voltage. As there is limitations for the spray transfer, for the arc current the welding has its lower limits. Since it is limited to certain range it can weld materials where the thickness being above 4 mm.
  • Pulsed Metal Inert Gas weld-
    Here the passage of DC power source is retained at low and high intervals. When the welds are done at low current welders maintain the arc without transferring metals. And during the high current passage metals are transferred in spray mode. Therefore this makes Pulsed welding process to weld at high and low heat inputs which is not possible in conventional process. And the possibility of welding thinner materials is much easier at any positions.
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Overview of Electrogas Welding

Tuesday, February 16th, 2010

Electrogas welding in short termed as EGW. It is an advance technique of electroslag welding where in it gives much better designs and usage is easier. In Electrogas welding, electrodes are been meted instead of slag. Electrodes which are melted by forming an arc with the help of shielding gas, the process is same as the MIG/MAG welding.

Electrogas welding enables the flow of electrodes and work pieces into the cavity of metals which are welded. This welding can be carried on for the weaving of thicker metals around 12-100m. The joint which is formed here is a simple I-joint in where the gap is formed. Welders can also weld in V-joints. If the welder makes use of long electrode stick the speed of welding will be higher and the molten produced in base material will be less and the temperature also becomes lesser.

EGW can be helpful in welding steels and some stainless steel. The visibility of welding is much more visible to the welders. Welders have to be careful with the weld procedure as large amount of molten is present during the welding. Operators should put on all the necessary welding attires with additional safety and fire hazard. A constant voltage of around 30-50 V and power supply been around 100 -800 A is essential.

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MIG Welding Guide

Monday, February 1st, 2010

Mig welding is popularly known as feed welding. Metal insert gas or Gas Metal Arc Welding (GMAW) or Metal Active Gas (MAG) is one of the fastest welding techniques. The process of welding is semi-automatic or automatic arc in which a continuous and consumable wire electrode and a shielding gas are fed through a welding gun. It is mostly utilized in high production welding operations. This welding can be carried on metals such as carbon steel, stainless steel, aluminum, and copper can be welded with this process in all positions by choosing the appropriate shielding gas, electrode, and welding conditions. Due to its versatility and speed it is commonly used in automobile industry. A flow of an inert gas usually Argon gas used is passed through the welding gun at the same time as the wire electrode. The Inert gas acts as a shield, keeping air borne contaminants away from the weld zone.

Following are the advantages of MIG

  • It is highly productivity, because welders don’t have to stop to change rods or chip and brush the weld frequently.
  • The process is easy and makes great-looking welds.
  • Almost there is no cleanup required.
  • This process of weld can be carried on stainless, mild steel, and aluminum.
  • It can be weld in all positions.

The welder has to follow safety tips while welding and protect himself by wearing a welding mask, wear flame proof coats and gloves and fully covered leather shoes.

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Flux Core Arc Welding

Monday, January 18th, 2010
  • This process is mixture between Mig and Stick welding.
  • This process is same as Mig Welding, except instead of a shielding gas using in Mig Welding, there is flux in welding wire.

Advantages

We can Use it in All Environments.

Disadvantages

Need additional clean up to remove flux

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Safety Measures While Performing Mig Welding

Thursday, November 5th, 2009

Welding in itself is known to be a dangerous tack. But MIG Welding can be really safe if you follow some vital precautionary measures. MIG welders produce a lot of heat radiations and unsafe light. To safeguard yourself from the destructions it can pose on your body religiously follow the below listed suggestions;

  • The hazardous light and heat that radiates from a MIG welder will burn your skin like the sun. Therefore first thing to do before using a MIG welder is to wear a face mask.
  • Do not forget to wear gloves to safeguard your hands from the molten metal splatter. As you weld there will be a pool of molten metal which will be splattered from the welder. So make sure you buy a thin pair of gloves that gives you total control over the equipment too.
  • Always weld in an area that is airy and preferably open to sky. Wear a mask with a respirator which will give you adequate oxygen.
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Introduction To Hot Glue Gun Welding

Wednesday, November 4th, 2009

MIG welding is also called as “hot glue gun” welding. It is a fascinating process where two metals are melted using electricity and then joined together. MIG welder is the most easily learnable equipment to use. There are various other difficult welding methods that are complicated, but MIG is the easiest to learn. And welding in itself is a skill that ought to be developed through constant practice. It cannot be acquired overnight. Only through trial and error method one can become a seasoned welder.

MIG is expanded as Metal Inert Gas. It is also referred to as Gas Metal Arc Welding. MIG welder does magic to almost all types of metals. Metals such as aluminum, magnesium, carbon steel, nickel, copper, stainless steel and various other alloys can be effectively welding using this method.

MIG welder produces almost less weld splatter than any other welding method. And it also produces great weld beads.

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Mig Welding: A Quick Overview

Monday, October 19th, 2009

Welding is a risky work. It can harm the person performing it in many different ways. Every manufacturer who makes the welder sells it with an instruction manual. This is an important booklet that needs to be followed to the dot. The book gives step by step orders to the welder on how to handle the apparatus. This will result in safe welding. Mig welding is also called as feed welding. It is cost efficient. Mig welders get the work done faster than any other welder. Mig Welding is most commonly preferred nowadays. The reasons for opting for a mig welder are;

  • Very simple to carry out
  • Requires lower time limit than other welders
  • It can be purchased within your means
  • Robots can be used
  • Any type of shielding gas can be utilized to get very even finishes.

Mig welders can be utilized to weld any kind of metal. It is therefore the most preferred type of welding.

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