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Welding Tips from an Expert Welder to a Beginner Welder
The method of welding is quite simple. All you need is to heat the two metal pieces on a point at which they melt. The combination of these weld pools by molten liquids creates one molten metal solidify.
Today we will be discussing random welding tips from the welders who are pro in this welding field and will provide practical pointers. These tips will be tailor-fit to any beginner who recently shifted in the metal mending field. Read more about welding tips and tools here.
Useful random tips from a welder:
Spray or glob modes for thick steel:
The welders might not understand the adjustment of volts, wire, and amp to speed up the welding process. However, this way can produce fine-tuned transfer modes into thick metal. Hence there are limiting factors when using spray mode or globular mode. According to Lincoln Electric's Karl Hoes, you can either use these modes on "1/8-inch thick metal, similar more thickly when making a flat and horizontal fillet welds".
Cleaning up the impurities:
According to Miller Electric's John Leisner, “the farmers have the commonly unsuccessful rate of adequately preparing the metal before welding." He continues by saying, "these involve removal of paint, dirt, and rust along with other surface contaminants on metal and some grinding out cracks." As per Leisner’s understanding, for some welders, the preparation of metal is the last thing they consider while welding. Putting metal pre at the least priority step, especially during the middle of feeding livestock or at the height of the season, can end up on the dry finish with impurities. Hence it is essential to "At least hit the repair area along with powered with a wire brush to remove dirt and rust.”
Since cleaning the impurities will remove the dust that has been absorbed by the metal while welding. So if you stay behind, you can compromise on the repair. Though if one cannot clean properly, it is important to avoid mending with MIG welder. According to Miller Electric's John Leisner, "The use of 6011 rods and a stick welder. Moreover, slow down the traveling speed. This way, it allows time to boil out for the molten weld's gas bubbles to clean from the impurities that might trap within the weld.”
Rules on angles, speed, and directions while welding:
The novice welder even experiences success while working on the different aspects of welding. However, Hose and Leisner's caution, to enjoy the long-lasting welding repair results, there are some hard-and-fast rules that one can follow to become a pro.
The push or pull rule:
This push or pull rule is simple. According to Leisner, "If it produces a slag, you can go for drag." You can drag the rod or wire while welding through a flux-core wire welder or with a stick for a more ease explanation. On the other hand, you can either push a wire through Metal Inert Gas (MIG) welding.
Work angle rule:
While using wire welding, it's better to hold a gun at an angle of 10 to 15 degrees towards pushing the weld. Whereas while using stick welding, try to maintain the angle of 20 to 30 degrees leading within the dragging direction. Lastly, when using fillet (tee) welding, it is important to hold the wire or rod at 45 degrees between the two metal pieces.
The speed rule:
Carefully take a look at welding puddles and ridges, I.e., the point where the molten metal solidifies. Hence while welding wire with MIG or Flux-core, make sure the ridge should approx. 3/8 inch behind the wired electrode. Mostly the traveling speed to weld various joints in a minute should fall below 40 inches.
Selection of MIG gas:
Generally, for the MIG welding, the tried and trusted preferred shielding gas should be 100% carbon dioxide (co²). This shielding gas is quite economical that provides a deep penetrating for the weld.
However, sometimes you might find yourself investing in other shielding gases, which are quite expensive. These gases include:
Argon 90 %, carbon dioxide (co²) 2.5 % and helium 7.5 % for stainless steel welding.
Use Argon 100 % or helium mixture for welding of Aluminum.
Use Argon 90 % and carbon dioxide (co²) 10 % for welding spray transfer. Also, use it on thick or massive pieces of metals.
Argon 85 % and carbon dioxide (co²) 15 % for heavier steel plate welding or use it for the metals that contain a lot of rust or mill scale.
Use Argon 75 % and carbon dioxide (co²) 25 % to produce nicely looked weld. Also, for high amperage levels welding.