Key factors to achieve a perfect weld

When designing the structure of a home, it is possible to opt for a concrete structure, a metal one or a mixture of both. In the case of metallic structures, to avoid all kinds of problems, a good welding process is essential, since It will be the process that will be in charge of joining the different metal parts used to lift that structure. In order to achieve the perfect welding, in addition to needing a professional welding team and having some experience in this sector, it will be important to take into account certain aspects that will influence this entire process. If you want to know these factors, keep reading because we will talk about them below.

Choose the right electrodes to do the job

The electrodes are a fundamental part to carry out a good welding. We can find different types of electrodes, and your choice will depend on the work to be done. The key is to find the right type and diameter.

Select correct amperage for welding

Before starting with the welding, it will be necessary to adjust the machine according to the electrode that we are going to use. Depending on the diameter of this, the amperage will vary. Choosing the correct amperage to get the job done will be key at all times. For this, it will be necessary to regulate the welding machine between the minimum and maximum amperage indicated by the manufacturer according to the type of electrode used.

Here we can find two situations:

• Insufficient amperage: It translates into difficulty to maintain the arch, in addition to producing a bulge in the material and poor penetration.
• Excessive amperage: In this case, the affected one is the cord, which will be flattened and porous, in addition to generating many splashes.

Proper bow length

Today, it is not possible to determine the length of the arc in mm, so it ends up being measured by the results of metal deposition, that is, by the shape of the bead.

• Short length: In this case, chords are created that have blowholes and slag inclusions, which have little penetration and an irregular appearance. The arc is often interrupted and the electrode tends to stick to the metal.
• Very long length: If the length is very long, the spatter will increase considerably. Insufficient penetration will also be achieved and the bead will have an undesired width. Sometimes the cord will have innumerable porosities.

Electrode inclination angle

The angle at which the electrode is applied with respect to the workpiece will influence the shape and appearance of the bead.

If the angle is too steep, excessive deposition will be achieved of filler metal, as well as poor bead formation and inadequate penetration.

Secondly, if the angle is very open, the bead will most likely create ripples, resulting in an irregular bead.

Correct forward speed

The speed at which the welding progresses will have important consequences on the final result. The advisable thing is to hit with the suitable advance.

If this speed is very slow, what we will achieve is to create a bulge of the metal, being able to overflow on the plate.

If the speed is very fast, what will be achieved is a thin bead and weak, which has little penetration and many porosities.

So now you know, if you want to make a good weld, it is necessary to take into account the factors that we have discussed and that will help you achieve it.