Vehicle Dent Repair And Stud Welding - Tips To Reduce Vehicle Body Damage

5 May 2016
 Categories: Construction & Contractors, Articles


If you have an older vehicle with a large dent, then you may be concerned about the way the dent looks when you drive your car. However, it can cost hundreds of dollars if you want a professional to complete dent repair. This may be a poor investment if your car is not worth a lot of money. You can try to make a repair yourself though.

Dents can allow rust to form across the body of your car. Dent repair with the use of a stud welding gun is one way to deal with the damage. However, you will need to make sure that you complete the welding process in a way that you do not damage your vehicle body. Keep reading to learn about some tips to avoid damage issues.

Choose Thin Studs

Stud welding can allow you to remove a dent from a vehicle by attaching studs to the steel body. A plunger can then be used to pull on each stud so the dent is released. Steel has shape-memory that will allow it to bounce back to its original form. Once the studs work to release the dent, they can be clipped away and the bonded ends can be ground down. This is necessary to produce a smooth surface that can be painted afterwards. However, you should understand that you should not be too aggressive about the grinding process. While steel is a sturdy and durable metal, most car bodies are a lot thinner than they seem. The steel body is likely to be between .65 and 2.5 millimeters thick. The average thickness is about 1.1 millimeters. Aggressive grinding can create a hole through the metal.

To reduce the amount of grinding that needs to be completed, make sure to use thin studs. Studs come in threaded, tapped, rounded, and even v-shaped varieties. For dent removal, a straight, thin, and non-threaded stud is needed. The studs should have flat ends or heads, and the heads should only be a few millimeters wide. If possible, make sure to use a soft metal as well that can be ground away quickly. Brass studs are a good choice for vehicle dent repair. 

Use A CD Welder

In most cases where stud welding is used, the most secure welds are desired and these types of welds require a great deal of heat. This heat is created when an arc-weld gun is utilized. This type of gun uses electrical current to create an arc between the stud and the base material. The base metal and the stud melt a small amount and the result is a strong bond between the two. When it comes to dent repair, it does not take a great deal of heat to melt brass studs. If too much heat is used, the molten brass may thin out too much and keep the stud from sticking properly. Excess heat can also damage the body of your vehicle. 

To make sure that too much heat is not used, opt for a capacitor discharge welding gun instead. This type of gun is a spot welding tool that uses electrostatic energy to create a bond between the stud and the base metal. The electrostatic energy is released in a quick and large burst of energy. Most of it is absorbed by the stud so it can bond easily and quickly to the base metal. Very little energy and heat moves through the base metal when the CD welder is used. This reduces damage to the steel body. Since welds are made extremely quickly, you will need to be sure that each stud is placed correctly before you press the stud weld trigger. Place the stud and the tip of the gun firmly against the car body before pulling the trigger for the best results. 

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