The first step towards improving your welding experience is by setting up your machine right.
Setting your power well will also help to improve the welding position. For a good quality weld, you will also need to be in the right welding position. Here are the common types of welding positions.
Types of welding positions
There are five different welding positions, each of them offering different strengths and challenges. Depending, on where and what you are welding, you may need to use all the different positions at the same time. The welding position refers to the welding task’s axis. When welding out of position, it means you are welding in any other position other than the flat weld position. This could be overhead, horizontal, or vertical. Once you have powered your MIG welder, you will need to use one of these positions.
This is usually the easiest welding position as the weld pool can lay flat and be adjusted to your desired position. It is also referred to as the down hand position. At this position, you weld on the joint’s top side, with the joint’s face in the horizontal position. At this position, the molten metal can easily move downward while filling the joint. This results in a fast, simple, and strong weld.
To achieve beautiful weld beads while in the flat position, you should sustain the flair movement, flame position, and tip angle. You will want to set the torch well to the desired flame. To create narrow beadings, you should raise the flame before lowering it in that circular motion. This ensures an even heat distribution.
The best welding angle is at 45 degrees as it approaches the metal surface from the base. Ensure that the weld puddle remains small so that it doesn’t burn the base. To ensure that two metal pieces are fused properly, move the torch slowly. To control the weld bead’s speed, change the welding speed and the amount of metal falling from the rod.
This welding position is considered out of position. It is usually tougher than a flat position. The welder will require more skills if it will come out well. This position offers you an almost horizontal axis. The weld type will determine the position. To perform a horizontal weld, ensure that the base metal plate is flush and lined up well. Lay tack on both ends to position them well.
Ensure that when welding torch is moving upwards and downwards for the even distribution of heat from one side of the joint to the other. With an even distribution, too much movement of the plate and your molten metal will not roll to the joint’s bottom. This will cause it to solidify faster.
Achieving this position needs various skills. Ensure that you have practiced well before you can use the position. Also, master the position before you can try other positions such as the overhead and vertical as these are more challenging to master.
This requires you to weld while out of position. It is usually more difficult than the flat position. The operator will require more skills to achieve this position. When welding vertically, you will need to position the axis vertically. However, in reality, you will be doing horizontal welding. To achieve a vertical, you will need to point the flame upwards and tilt it at 45 degrees to the base metal. This will ensure that the pool of molten weld doesn’t pile in the position. This will also enable you to use the workpiece bottom. You will need to weld against the gravity forces so that the weld doesn’t puddle.
With the overhead position, you carry the welding from below the joint. This is among the most complicated positions. The metal that gets deposited in the joint sag on plates causing a bead with a higher crown. To ensure that this doesn’t happen, the molten puddle should be made small. To achieve that strong fusion and ensure that the beads are reinforced, you will require ample fillers. However, ensure that the pool doesn’t get too big.
If the paddle of the weld becomes too large, ensure that the flame is removed for a short time, for the molten metal to cool. This is especially important when you are welding light or thin metal sheets. To achieve this, you will want to ensure stick control of the weld puddle size using a method that ensures an even distribution of heat between the base metal and the filler rod.
This technique requires that you melt both the joint’s edge at the same time. You can achieve that by applying the flame to the base. You will use ample filler metal that will penetrate the joint and provide enough reinforcement to provide a decent size of the weld puddle. The pool of molten paddle should be supported by the welding flame during the process. Be sure you are regulating the heat passing through the plates so that you won’t overheat anything in the process.
While there are still other welding positions, the above are the most common. There are many positions out there that a welder may never even use. Before you attempt the challenging techniques, you must first attempt the simpler ones. After learning the above technique, you can weld anything and you will become like a professional welder.