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What Is the Function of Chipping Hammer in Arc Welding?

A chipping hammer is an essential tool in arc welding, specifically used for cleaning and preparing the weld area. Here are the main functions and details about the role of a chipping hammer in arc welding:

Functions of a Chipping Hammer in Arc Welding

Slag Removal:

  • Primary Function: The main purpose of a chipping hammer is to remove slag, which is the layer of flux residue that forms on the surface of the weld bead after welding. This slag needs to be chipped away to reveal the clean weld underneath.

  • Process: During the welding process, the flux in the electrode melts and forms a protective layer over the molten weld pool. Once the weld cools, this slag solidifies on top of the weld. The chipping hammer is used to break and chip away this hardened slag.

French Type Chipping Hammer with Colour Plastic-Coating Handle

French Type Chipping Hammer with Colour Plastic-Coating Handle

Cleaning and Inspection:

  • Visual Inspection: After chipping off the slag, welders use the chipping hammer to ensure that the weld bead is clean and free of defects. This is crucial for visual inspection and to confirm the integrity and quality of the weld.

  • Surface Preparation: In some cases, after slag removal, further cleaning with a wire brush (often attached to the opposite end of the chipping hammer) is necessary to prepare the surface for additional welding passes or for final inspection and finishing.

British Type Chipping Hammer for Sale

Spatter Removal:

  • Surface Cleanup: Arc welding, particularly shielded metal arc welding (SMAW) and flux-cored arc welding (FCAW), can produce spatter — small droplets of molten metal that scatter and adhere to the surrounding metal surfaces. The pointed end of the chipping hammer is effective in removing these spatter deposits.

    French Type Chipping Hammer with Tubular Steel Handle

French Type Chipping Hammer with Tubular Steel Handle

Design and Features

Dual-Ended Tool:

Chisel End: One end of the chipping hammer is typically flat and chisel-shaped, designed for scraping and chipping off larger chunks of slag.

Pointed End: The other end is pointed, allowing for more precise removal of slag in tight spots and for dealing with stubborn deposits.

Durability: Chipping hammers are made from hardened steel to withstand the impact and abrasion of chipping away slag and spatter.

Handle Design: They often feature a spring handle or a rubber grip to absorb shock and reduce hand fatigue, making it more comfortable to use over extended periods.

Recommended Reading: Selecting the Right Chipping Hammer

Importance in the Welding Process

Weld Quality: Proper slag removal is critical for ensuring that subsequent weld passes properly fuse with the previous ones and that there are no inclusions or defects hidden beneath the slag.

Aesthetic Finish: Removing slag and spatter results in a cleaner and more professional-looking weld, which is important for the final appearance of the welded structure.

Safety: By removing slag and spatter, the welder ensures that the workpiece is safe to handle and reduces the risk of injuries from sharp or jagged edges.


The chipping hammer is a fundamental tool in arc welding, indispensable for slag and spatter removal. Its use is crucial in achieving clean, high-quality welds, ensuring proper fusion between weld passes, and preparing the welded area for inspection and finishing. By effectively removing slag, a chipping hammer helps maintain the structural integrity and aesthetic quality of welded joints.