Developed in collaboration with volunteers from OEMs, Tier 1 suppliers, heat treat suppliers, and calibration companies that service the heat treat industry, the Special Process: Heat Treat System Assessment 4th edition (CQI-9) is a comprehensive audit covering the most common heat treat processes employed by the automotive industry, intended to provide a common approach to a heat treat management system for automotive production and service part organizations.
The Heat Treat work group is developing the 5th edition of the Heat Treat Assessment. This new edition will focus on clarification to the process tables and pyrometry requirements.