November 2025 Volume 7

EQUIPMENT & TECHNOLOGY

References: 1. Robertson, T., Witoff, B., & Dzik, J., “METHOD AND APPARATUS FOR IMPROVING FURNACE TEMPERATURE UNIFORMITY,” U.S. Patent 12 104 788, Oct. 1 2024. 2. AMS2750 Rev. H, Page 44, Table 17: “Minimum number of TUS sensors and required locations” 3. Bulk furnace temperature read on average 20F hotter at 2000F and 2100F than the controller set point. Reported set point variations are referenced to the median thermocouple instead of controller set point. 4. Tuning at 2100F was left to run overnight to test the effectiveness of longer hold times. 5. AMS 2750H section 3.5.4.1.1k. Change of combustion pressure settings from their original settings. Ben Witoff Manager of Information Systems and Data Strategy Fives North American Combustion, Inc. Phone: 216-271-6000 Email: benjamin.witoff@fivesgroup.com

Figure 5: Tuning data for six temperatures Operating this linearizing technology does not violate furnaces with multiple temperature survey temperatures per AMS2750H because the valve positions are repeatable and maintain the original settings and pressures from the tuning prior to the TUS and will remain in that position until the next tuning5. SIFCO’s Testimonial

Figure 6: Nick Klusty of SIFCO Forge SIFCO’s Facilities & Maintenance Manager, Nick Klusty stated, “We had been struggling to maintain Class III on this 8001 furnace for years. It took days to tune the furnace in preparation for every monthly TUS. Now it literally takes minutes. The North American CertiFire tunes so much better than we could ever achieve by hand. So good that we now have a second furnace available for Class II work which opens up a new channel for production saving us the time and money of using outside services to heat treat Class II products.” To learn more about North American CertiFire and how it can streamline your furnace certification process through automatic furnace tuning technology and IIOT insights, contact Patrick McLaughlin, Business Development Manager, Fives North American Combustion at patrick.mclaughlin@fivesgroup.com or 216-373-8463.

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