Lindberg MPH, Riverside, Mich., has shipped an electrically heated gas nitriding pit furnace with an ammonia dissociator system for heat treating steel parts. It features a two-stage nitriding process to achieve high surface hardness. The ammonia dissociator provides dissociated ammonia during the nitriding cycle second stage. All of the equipment needed has been provided with the system, and is backed by the installation and start-up support of knowledgeable service personnel.
The cylindrical pit furnace has a maximum temperature rating of 1250°F and work chamber diameter of 28 inches and depth of 36 inches. A state of the art operator interface controls process parameters and is used to observe/archive historical data. The system monitors and controls the furnace temperature, fan speed, atmosphere flow, and cooling throughout the entire cycle. Accelerated cooling cuts down on overall cycle time. The advanced control system solves the problems of controlling furnace atmospheres, storing batch data, tracking alarm trending, and complying with AMS2750E specifications.
Unique features include low iron brick insulation to prevent reactivity with furnace atmosphere; heater coils designed with low surface watt density for extended service life; and a thermocartridge fan for increased heat and atmosphere recirculation. A nitriding gas flow control system has full automatic recipe control for each stage of the two-stage nitriding process.
Lindberg MPH is owned by Thermal Product Solutions, a leading American manufacturer of custom industrial ovens for heat treating, finishing, drying, curing, manufacturing automation and process control. TPS is a global leader in thermal processing products and test solutions with brands including Baker Furnace, BlueM, Gruenberg, Tenney, Lindberg MPH, and Wisconsin Oven.
