Welding is a lengthy process that involves multiple variables. There are various forms of welding techniques used for different industrial applications. Using the right approach will ensure a durable weld. While there are industry approaches to determine reliability, there are several indicators that can prove a bad weld. Here are some visual points to help you identify and determine if a particular weld is safe and credible.
For oxy welding, you can identify signs of bad weld through the following:
- Unfinished fusion
- Overlapping or undercut metal
- An abnormal number of globules of the metal
- Inadequate penetration to the lower part of the metal
- Weld that is either oversized or undersized
Most of these errors are caused by incorrect welding processes. However, you can correct the issue as soon as you determine its cause.
TIG welding is an arc welding procedure. Normally, a tungsten electrode produces the weld. Welders use this process when they want to produce high-quality products without compromising the look of the end product. Bad signs to watch out for include:
- Inclusion of tungsten
- Undercutting of the metal
- A metal piece that does not have any bead pattern
MIG is also a very common type of welding procedure. Just like other types of welding processes, this procedure also faces a lot of challenges and sometimes leading to bad weld. To know if the MIG welding procedure has gone rogue, you will see the following signs:
- The original metal does not discolour
- The finished product is too thin
- The bead develops a crack at the middle
- Welded metals are not uniform
Stick welding can either use direct electric or alternating current that passes between the metals and the electrode. When electricity passes between the electrode and the metal, the two parts melt to form a weld pool, which forms a joint when it cools down.
Signs of bad stick weld are:
- Lack of fusion
In commercial construction and manufacturing, the most important thing is the end product, nothing else matters. Impeccable designs and appeal, high-quality results, budget goals, and strict deadlines are the most important factors. However, most companies overlook the importance of a good weld. Bad welding destroys the integrity of a given project, resulting in vulnerabilities that lead to serious consequences. Therefore, if you notice any of the above signs when welding, stop the process and correct the problem first before you continue with the project.