The 4 Most Common Welding Mistakes Students in Mechanic Training Learn to Avoid

mechanic schools
Welding, where materials are heated and joined together, may seem like a simple task, but it can be dangerous when the equipment or environment is handled improperly. There are over 70 different welding processes, as well as a variety of hazards such as burns, eye damage, fume exposure, and ultraviolet radiation to watch out for and be aware of.

Metals can be joined, cut, or separated by a heat source, most commonly an electric arc, which melts the material upon contact to create a joint. This is the most complicated step in the welding process, and many factors can affect the final outcome. Here are a few common mistakes to be aware of and avoid in order to complete your work safely.

Ensure Proper Handling During Mechanic Training

Handling welding equipment requires attention and focus in order to be successful. First, and perhaps most importantly, be sure that you have proper safety equipment and are working on a firm foundation. It may be tempting to plug in the rod and work on any available surface, but the welding table is far more preferable than a piece of scrap or flat ground.

Be aware of your aim and stance before you start to weld
Be aware of your aim and stance before you start to weld

Your stance also affects how you work when you weld. In mechanic training, make sure to establish a firm, but comfortable position before aiming the rod where you want to start.

Check the Metal and Electric Current Type

Before you try to weld anything, it’s important to note the type of metal you will use, because it influences the type and amount of current to use in the rod itself. Additionally, welding with the wrong rod is a common mistake for new welders in mechanic schools, as well as using the wrong temperature setting.

Consult the welder guidelines, or cut off a few scraps to safely test your settings and make sure your weld is both strong enough to join, but not too powerful that it burns through the metal. Remember to never change the temperature setting while it is being used, because this can lead to electrocution.

Using the Right Equipment in Auto Mechanic Courses

Both new and seasoned welders may forget that their equipment collects oil, dirt, grease, and rust, and this can affect weld quality as well as the strength and cleanliness of the weld joint. A moist or damaged electrode in the welding rod can cause major problems while being used, and should be stored somewhere warm and dry.

Welding equipment should be kept updated and clean
Welding equipment should be kept updated and clean

Similarly, repurposing or using old, outdated equipment can cause operational problems or lost time due to troubleshooting or repairs. Welding rods in particular should be purchased new in order to provide the best possible quality.

Be Clean and Avoid Contamination

When it comes to the actual welding process, students should be aware of the particulars of the material they are working with, and how it will react to the welding equipment. Many new welders make the mistake of not identifying the base metal they are working with, and this can easily cause a serious reaction if the wrong material is exposed to the torch, particularly if it has not been pre- or post-heated. Additionally, previously used welding materials with paint, rust, or chemical residue are not advisable to be used because they may produce noxious fumes when in contact with heat.

Are you interested in enrolling in auto mechanic courses?

Contact your local Automotive Training Centre for more information!

Form is submitting