MIG welding or Metal Inert Gas welding is a gas welding approach which can be bought in use to join two thick surfaces with each other in an everlasting joint. This approach is majorly bought in use in fabrication industries and other such industries where thick plates are joined with each other using this approach. In order to bring about this job to completion, special welding specialists are hired by companies who are familiar with various approaches involved during the same. The exact ways and approaches included during MIG welding for a thick plate can be explained as follows:-
How to MIG Weld Thick Plate
1. The main approach of MIG welding:-
MIG welding includes a welder to attach a consumable wire electrode with the welding gun in order to bring it closer to the welding workplace and then the heating effect generated while doing so welds the thick plates together. A shielding gas is supplied meanwhile in order to shield the process from contaminants present in the air and the sheets get welded perfectly.
2. The Voltage/ Attachment Specifications:-
A constant amount of voltage or direct current is the key power source for this type of welding. You can use alternate current as well but it always depends on the place of welding and approach of welding. We begin with pre-heating approach where we pre-heat the metal plates in order to ensure a perfect fusion. This gives us good penetration and makes us avoid the thermal gradient. The pre-heating temperature stays about 75-150 degree Celsius.
3. Pre-Cleaning and Short Circuiting:-
The parent metal is pre-cleaned in order to avoid contaminants and to remove the debris, scales and other such contaminants deposited over it. Short circuiting is also one of the key processes that a MIG welder brings in use. In this approach, the parent metal is made to melt by initiating a short circuit with the help of an electrode.
4. Choice of an Electrode Holder:-
Making choice of an electrode holder is also one of the key steps in MIG welding. You can go for a semi-automatic or automatic electrode holder for welding thick plates. Semi automatic electrode holders can rather prove to be more compatible as they can be operated even with low level of current. Your choice for choosing an electrode holder depends from workplace to workplace and even on the thickness of plate that you are going to weld.
5. Proper Shielding While Welding:-
Normally, a combination of gases like argon, carbon dioxide etc, is bought in use to provide the shielding effect. Most of the welding industries in today’s world use a combination of these two gases only. Though there can be other gases bought in use for this purpose as well but still these gases are supposed to pay back better penetration results.
6. Making the plates ready:-
Just tack plates one above the other in desired shape or manner and then make arrangements for your power supply purpose. Connect the electrode holder with an electrode and then commence the procedure of welding. If possible, hire a welding professional for this purpose and also never forget to ensure safety approaches as well.