What is the purpose of a chill plate in welding?

The purpose of a chill plate in welding is to absorb excess heat generated during the welding process. When welds are made, particularly on thicker materials, the heat can cause warping, distortion, or even damage to the workpiece. By placing a chill plate in contact with the workpiece, heat is drawn away from the weld area, helping to control the temperature and minimize thermal expansion. This leads to a more stable welding environment, promoting improved joint quality and integrity in the finished weld.

Understanding the role of the chill plate underscores the importance of temperature management in welding operations, particularly in processes like Gas Tungsten Arc Welding (GTAW), where precision and control are critical for achieving desirable weld characteristics.