The 4 Most Common Welding Mistakes Students in Mechanic Training Learn to Avoid
October 4, 2018
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.
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.
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.
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