What does the term "filler metal" refer to in the welding process?

What does the term "filler metal" refer to in the welding process?

• A. The primary metal being welded
• B. The molten material used to create a weld
• C. The gas used during the welding process
• D. The equipment used to hold pieces together

Answer: (B)

Filler metal refers to the material added during the welding process to fill the gap between the workpieces and create a strong bond when the weld cools and solidifies. This material can come in different forms, such as rods or wires, and is crucial for achieving the desired strength and durability of the weld. In contrast, the primary metal being welded is the base material that provides the structure, while gases used during welding, like shielding gas, serve the purpose of protecting the weld pool from contamination. The equipment used to hold pieces together is primarily mechanical support and does not contribute to the actual welding process or the formation of the weld itself. Understanding the role of filler metal is important for selecting the appropriate type based on the base materials being welded and the specific requirements of the welding project.

Filler metal refers to the material added during the welding process to fill the gap between the workpieces and create a strong bond when the weld cools and solidifies. This material can come in different forms, such as rods or wires, and is crucial for achieving the desired strength and durability of the weld.

In contrast, the primary metal being welded is the base material that provides the structure, while gases used during welding, like shielding gas, serve the purpose of protecting the weld pool from contamination. The equipment used to hold pieces together is primarily mechanical support and does not contribute to the actual welding process or the formation of the weld itself. Understanding the role of filler metal is important for selecting the appropriate type based on the base materials being welded and the specific requirements of the welding project.