Harper International Corporation Retort Furnaces

Harper’s specialized heat processing system for the application of heat resistant coatings offers many advantages over a vacuum furnace systems, including high quality and reliability, improved process flow, reduced maintenance cost, and productivity enhancement. This kiln incorporates significant design enhancements such as variable mass flow controlled gas flow into the retort, oxygen and water vapor sensing systems, additional heating elements and control zones for exacting temperature uniformity (± 5°C), and isolated cooling chambers. The Harper system includes two kiln cars with independent cooling chambers. The first car is moved automatically into the furnace, removed hot, and transferred into the cooling chamber. The second car is then loaded, increasing furnace utilization and greatly improving the process flow throughout the entire coating operation. Isolating the cooling process offers a dramatic improvement to the work environment and reduces the air conditioning load.