Abstract: A method and system for controlling the temperature in a furnace such as a continuous feed controlled atmosphere furnace includes an upstream thermocouple in a first area of the furnace, a second thermocouple in a second area of the furnace, and a heater control system. A sensed temperature from the upstream thermocouple is used to generate a control signal for a heater associated with the first area of the furnace. The sensed temperature from the first area of the furnace is further used to modify a set point that is compared to a sensed temperature from the second thermocouple. A control signal for a heater associated with the second area of the furnace is generated based upon the comparison of the modified set point to the sensed temperature from the second thermocouple.

Abstract: A continuous controlled atmosphere brazing system includes a dry-off oven for driving off moisture from materials to be brazed, a pre-heat section for pre-heating the material and a brazing furnace for brazing the materials. Heated gas produced in the pre-heat section and the brazing furnace is conveyed along a flowpath to the chamber of the dry-off oven to provide substantially the sole source of heat for the oven. The flowpath for the heated gas is defined by a series of tubes in communication with each component of the brazing system and intermediate manifolds disposed between components. The discharge mouths of the tubes open into the oven chamber at the suction side of recirculation fans operating within the oven. The overall temperature of the oven can be regulated by controllably mixing ambient air with the heated gas in relation to the oven temperature.

Abstract: A continuous controlled atmosphere brazing system includes a dry-off oven for driving off moisture from materials to be brazed, a pre-heat section for pre-heating the material and a brazing furnace for brazing the materials. Heated gas produced in the pre-heat section and the brazing furnace is conveyed along a flowpath to the chamber of the dry-off oven to provide substantially the sole source of heat for the oven. The flowpath for the heated gas is defined by a series of tubes in communication with each component of the brazing system and intermediate manifolds disposed between components. The discharge mouths of the tubes open into the oven chamber at the suction side of recirculation fans operating within the oven. The overall temperature of the oven can be regulated by controllably mixing ambient air with the heated gas in relation to the oven temperature.