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What is the welding defects for MIG welding?

You can find pretty much all welding defects in Mig welding. There are some that are morelikely to appear than others but that is depending on the gas and power range that is being applied. The defects are: porosity, incomplete penetration (mostly in case of short circuit transfer) undercut, excessive concavity/convexity (incorrect amperage/voltage ratio), cracks (cold and hot) incomplete fusion (wrong torch angles), cold lap.


What is the difference between Tig weld vs plasma weld?

When we are using the tig welder we getting welding defects on our blanks, but when using the plasma weld no defects are found


What are welding defects?

1. crack 2. spatter 3.distortion 4. haz 5 blow holes


Ndt methods of detecting welding defects?

The best method for detecting defects in welds is Magnetic Particle. You can also use Fluorescent penatrent, and x-ray but they can be time consuming and often unreliable.


How can UV light be used in welding processes?

UV light can be used in welding processes to help initiate and control the welding arc. The intense energy from UV light can create a strong and stable arc between the welding electrode and the workpiece, allowing for precise and efficient welding. UV light can also be used to preheat the materials being welded, which can help reduce the risk of defects in the final weld.


What is hazadous waste?

Some form of trash that is harmful to life or the environment.


In Canadian transportation hazadous materials are called?

Transport of Dangerous Goods (TDG)


What is the purpose of shielding gases in welding?

Shielding gases in welding protect the molten metal from reacting with the surrounding air, which can lead to defects like porosity and oxidation. They also help stabilize the arc and improve the quality of the weld by controlling the heat input and transfer.


How does oxidation affect the quality of welding?

Oxidation can negatively impact the quality of welding by weakening the bond between the metals being joined. This can lead to a weaker and less durable weld, as well as potential defects and imperfections in the final product. It is important to prevent oxidation during the welding process to ensure a strong and reliable bond between the metals.


What is difference between melt through and burn through in welding defects?

In welding, "melt through" occurs when excessive heat causes the base metal to be penetrated, resulting in a hole. "Burn through" happens when the heat is so intense that the molten metal actually burns away portions of the base metal, leading to thinning or complete loss of material. Both defects can weaken the weld joint and compromise its integrity.


What is oxidation and how does it impact the welding process?

Oxidation is a chemical reaction where a material loses electrons. In welding, oxidation can weaken the bond between the metals being joined, leading to a weaker weld. It can also cause defects in the weld, such as porosity or cracks, reducing the overall quality and strength of the weld.


What are the common safety precautions to consider when performing ground welding?

When performing ground welding, common safety precautions to consider include wearing protective gear such as gloves, goggles, and a welding helmet, ensuring proper ventilation in the work area, keeping flammable materials away, and having a fire extinguisher nearby. Additionally, it is important to inspect equipment for any defects, use proper welding techniques, and be aware of potential hazards such as electric shock and burns.