2.\u00a0\u00a0\u00a0 Buying a Welding Equipment<\/h2>\n
For beginner welders, the most significant expense is going to be the purchasing of actual welding equipment. Cheap welding equipment makes it difficult to learn new skills. As a beginner, take the MIG welding technique. Purchase a MIG welding equipment that has a motor-driven wire spool. You can get MIG welding equipment with those specifications for $300-$800.\u00a0 The lower cost Millermatic<\/a>, is nice welding equipment that can be used to weld thin aluminum and steel between 24-gauge and 3-16 inch. The selection of the right welding electrode is essential. For welding of mild steel, an E70 or E60 welding electrode can be used. As a beginner, 6013<\/a> is an excellent option. The first two digits of the electrode code show the tensile strength of the electrode material. The third digit indicates the position for which an electrode should be used, and the fourth digit indicates the amperage and electrode coating.<\/p>\n For beginning welders, they should have a good supply of welding wire. If you are not confirmed that which welding diameter is needed, consult the welding equipment technical manual to make sure you are purchasing the correct equipment. Shielding gas is also needed during arc welding as it does not allow the metal to react with the atmospheric air during the welding process. Reusable welding tanks are available in the market. The pressure of a gas varies depending on the type of welding. The pressure of shielding gas is generally between 15-25 psi. For a cleaner weld, a shielding gas of 75% CO2 <\/sub>and 25% argon is used. Electric cable is also necessary as it is used to complete the circuit required to perform welding by attaching one end to the workpiece.<\/p>\n This is the first step taken by the welder before laying down metal pieces for welding. Any impurity such as chemical or dust on the welding table can react with the metal piece during welding and can damage the weld quality. Therefore, it is vital to keep the welding area free of debris and oils. This will make welding simpler and more grounded. You can use a wire brush and acetone to remove dust and oils.<\/p>\n Safety is the primary concern due to a very high temperature in the welding process. During welding, sparks are produced, and plasma is also formed in the welding area due to high welding temperatures. Welding fumes are also produced, which are not suitable for health if inhaled. Therefore, a welder should arrange a welding helmet (see here: Features To Consider In Auto-darkening Welding Helmets<\/a>), gloves, and a particular face cover for their safety. Special welding boots<\/a> are also essential to protect feet during a welding operation. It is also necessary to have unique welding jackets that protect your clothing from welding sparks.<\/p>\n After knowing the principle of welding and getting all the welding accessories, you should first practice handling the welding gun before you even start welding. Hold the barrel of a firearm in on hand, and support that hand on the table. Use the other hand to operate the trigger of the gun. It is a good attempt to dry run your welding gun to make sure that you are handling it correctly. The adjoining edges of pieces of materials to be joined can have a chamfer of 45 degrees so that they can be appropriately fused. While performing actual welding operation, the gun should be held such that the angle of wire normal to the workpiece is between 15 and 30 degrees, and the welding is moved in the reverse direction of the dominant hand. During welding, you should spend at least two seconds while laying down each bead and maintain a constant arc length. Sticking the welding rod at one place for a long time can burn a hole through the workpiece, or welding wire can also stick with the base metal. If a welding gun is traveled too fast, then filler material would not be appropriately filled in the gap, resulting in weak welding.<\/p>\n Like speed and angle of welding gun, the voltage is also an essential parameter. A very large voltage would cause a wide and flatter weld bead that is porous and excessive spatter. Moreover, the large voltage would also produce undercuts, and grooves melted into the workpiece. A very low voltage would create a very narrow weld bead that would lack proper penetration and fusion.<\/p>\n It is necessary to grind the weld after joining the metal pieces. During the welding operation, a slag is formed on the weld surface due to the reaction of flux with the air. This slag can damage the quality of the weld. Therefore, after cooling of the weld, the surface of the weld is ground to polish it.\u00a0 A 36-grit right angle grinder can be used for this purpose.<\/p>\n The color of sparks can tell you whether you are grinding the weld properly or not. Orange sparks of the grinding show that you are pressing the grinder with the correct force. Blue sparks indicate that you are pushing too hard, and white sparks show that more heat is being generated during the grinding, which can damage the weld’s structure.<\/p>\n There are different types of welding joints. In butt joint, metal pieces are joined end to end. In lap welds, metal pieces overlap. The motion path of the welding gun depends on the type of welding joint. For lap welds, a welding gun is moved to create a series of ovals that provide excellent welding coverage. For butt joints, the welding electrode is traveled in a zig-zag pattern along with the workpiece. This pattern is the most effective as it evenly spreads out the molten weld across the joint.<\/p>\n3.\u00a0\u00a0\u00a0 Keeping of Welding Accessories<\/h2>\n
4.\u00a0\u00a0\u00a0 Cleaning of Welding Area<\/h2>\n
5.\u00a0\u00a0\u00a0 Adopt Necessary Safety Measures<\/h2>\n
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6.\u00a0\u00a0\u00a0 Getting Started with Welding – Best welding tips and tricks for beginners<\/h2>\n
7.\u00a0\u00a0\u00a0 Grinding of Weld<\/h2>\n
8.\u00a0\u00a0\u00a0 Manipulation of Welding Gun<\/h2>\n
Conclusion<\/h2>\n