In Arc Welding process, chipping hammer is used to __________________.

Explanation:

Arc Welding Process

Definition: Arc welding is a welding process that uses an electric arc to create heat to melt and join metals. A power supply creates an electric arc between a consumable or non-consumable electrode and the base material, causing the metals to melt and fuse together.

Chipping Hammer

Definition: A chipping hammer is a tool commonly used in welding to remove slag from a finished weld. It typically has a sharp pointed end on one side and a flat chisel end on the other, designed for efficiently breaking and removing the slag.

Working Principle: When performing arc welding, slag, a byproduct of the welding process, forms on the surface of the weld bead. The chipping hammer is used to strike the slag, breaking it away from the weld. This ensures a clean weld surface and allows for inspection and subsequent welding passes.

Advantages:

• Ensures a clean weld surface by removing slag, which can interfere with the integrity and appearance of the weld.
• Simple and effective tool, easy to use and maintain.

Disadvantages:

• Manual process, requiring physical effort and time.
• Potential risk of damaging the weld if not used carefully.

Applications: Chipping hammers are widely used in various welding processes, including shielded metal arc welding (SMAW), flux-cored arc welding (FCAW), and submerged arc welding (SAW), where slag formation is common.

Correct Option Analysis:

The correct option is:

Option 2: Remove the slag by striking.

This option correctly describes the primary function of a chipping hammer in the arc welding process. The chipping hammer is used to strike and break away the slag that forms on the weld bead during welding, ensuring a clean surface for inspection and further welding passes.

Additional Information

To further understand the analysis, let’s evaluate the other options:

Option 1: Clean the surface to be welded.

This option is incorrect because the chipping hammer is used after welding to remove slag from the weld bead, not for cleaning the surface before welding. Cleaning the surface to be welded typically involves other tools and techniques, such as wire brushes, grinders, or chemical cleaners.

Option 3: Protect the eyes.

This option is incorrect as the chipping hammer is not used for eye protection. Eye protection in welding is provided by welding helmets, safety glasses, or goggles designed to protect the eyes from harmful UV and IR radiation, sparks, and debris.

Option 4: Hold the electrode manually and conduct current to it.

This option is incorrect as holding the electrode and conducting current is the function of an electrode holder or a welding torch. The chipping hammer has no role in holding the electrode or conducting current in the welding process.

Conclusion:

Understanding the function of various tools used in the welding process is essential for ensuring the quality and safety of the welds. The chipping hammer, as explained, plays a crucial role in removing slag from the weld bead, ensuring a clean and inspectable surface. This step is vital for the integrity of the weld and for preparing the weld bead for any additional welding passes if needed. The other options provided do not align with the primary function of the chipping hammer, highlighting the importance of correctly identifying the tool's purpose in the welding process.