What is the consequence of improper heat during welding?

Improper heat during welding can lead to the formation of cold laps, which occurs when the molten metal does not fully fuse with the base material or previous weld passes. This results in a discontinuity or a lack of bonding in the joint. Cold laps typically manifest as a build-up of weld material without the proper penetration needed for a strong connection, leading to weak points in the weld that can compromise the overall structural integrity.

Heat control is critical in welding because it influences the melting, bonding, and solidification processes. If the heat is insufficient, it can prevent adequate fusion, creating gaps that are not desirable in a well-executed weld. Therefore, understanding the consequences of heat management in welding processes is vital for achieving strong, durable connections in metal fabrication.