198668 - Miller Induction Blanket Protective Sleeve for 30-Inch Pipe

Technical Overview of the Miller 198668 Induction Blanket Sleeve

The Miller 198668 Induction Blanket Sleeve is a specialized accessory designed to function within the Miller ProHeat induction heating ecosystem. Induction heating is a non-contact method of heating electrically conductive materials, widely used for pre-heating welds and post-weld heat treatment (PWHT) in industrial piping applications. The induction blankets themselves contain the conductive coils necessary to generate the magnetic field that heats the workpiece. These blankets are significant investments and are often subjected to harsh environments, including rough pipe surfaces, scale, and general abrasion during setup and teardown.

This specific sleeve measures 9.0 inches in width and 107 inches in length. The length is calculated to accommodate a 30-inch diameter pipe. A 30-inch pipe has a circumference of approximately 94.2 inches, meaning the 107-inch length of this sleeve allows for sufficient overlap to ensure the blanket is fully secured and protected around the entire perimeter of the pipe. The sleeve acts as a sacrificial barrier between the induction blanket and the workpiece, preventing direct contact that could abrade the blanket's outer fabric or damage the internal coils over time.

Using genuine Miller OEM accessories ensures compatibility with the thermal and mechanical requirements of the ProHeat system. The materials used in the sleeve are selected to withstand the thermal cycles inherent in induction heating processes without degrading or interfering with the magnetic flux required for efficient heating. By maintaining the integrity of the induction blanket, operators ensure consistent heating profiles and compliance with welding procedure specifications (WPS) that mandate precise temperature control.