What is the Difference Between Spot Welding and Tack Welding?
🆚 Go to Comparative Table 🆚The main difference between spot welding and tack welding lies in their purpose and the way they are performed:
Spot Welding:
- Spot welding is a permanent welding process used to fuse two metals together.
- It is carried out through a combination of electrical current and pressure applied to the metals being fused.
- Spot welding is widely used in industrial applications, particularly in the assembly of automobiles and other vehicles.
Tack Welding:
- Tack welding forms a temporary pre-weld.
- It is a preliminary process in many welding techniques, ensuring that parts to be welded together are held securely and properly aligned.
- Tack welding uses filler material when joining metal pieces.
- It can be used on a range of metals, each with varying thicknesses.
- Tack welding is typically performed before spot welding.
In summary, tack welding is a temporary process that holds parts together and ensures proper alignment, while spot welding is a permanent process that joins the parts together using electrical current and pressure.
On this pageWhat is the Difference Between Spot Welding and Tack Welding? Comparative Table: Spot Welding vs Tack Welding
Comparative Table: Spot Welding vs Tack Welding
Here is a table comparing the differences between spot welding and tack welding:
Feature | Spot Welding | Tack Welding |
---|---|---|
Purpose | Permanent fusion of two metals together | Temporary pre-weld to hold parts in correct alignment until final welding is complete |
Method | Combination of electrical current and pressure applied to metals being fused | Filler material used to join metal pieces |
Materials | Can be used on a range of metals with varying thicknesses | Suitable for thinner materials |
Strength | Structurally sound and ideal for high-volume projects | Cost-effective but not suitable for structural applications |
Applications | Welds are permanent and not removable | Used in applications where only one side is accessible |
Symbol | Circle placed above the reference chart on a blueprint | No official tack weld symbol |
In summary, spot welding is a method used to fuse two metals together permanently, while tack welding is a temporary pre-weld that holds parts in the correct alignment until final welding is complete. Tack welding is especially useful in applications where only one side is accessible.
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