초록 ▼

A given target temperature profile T is produced in a workpiece as it passes through an elongated passageway of a belt furance by the steps of: (1) determining a set of temperature setting TSX for the belt furnace thermostats which satisfy an equation f(aX,CFY)�T where aY is a set of correction fact

A given target temperature profile T is produced in a workpiece as it passes through an elongated passageway of a belt furance by the steps of: (1) determining a set of temperature setting TSX for the belt furnace thermostats which satisfy an equation f(aX,CFY)�T where aY is a set of correction factors, and f( ) is a function which approximates the temperature of said workpiece based on TSX,aY; (2) measuring an actual temperature profile A(TSX) of the workpiece in the furnace with the heater thermostats at the settings TSx; (3) terminating if the measured actual temperature profile A(TSX) matches the target temperature profile T within a predetermined tolerance; otherwise, (4) determining a new set of correction factors which satisfies an equation f(aX,CFY)=A(TSX); and thereafter repeating the above steps.

대표청구항 ▼

A manufacturing system, for producing a target temperature profile T in a workpiece; said system comprising: a belt furnace which has a plurality of spaced apart heaters in an elongated passageway and respective thermostats for said heaters; and a controller for selecting a set of settings TSX for s

A manufacturing system, for producing a target temperature profile T in a workpiece; said system comprising: a belt furnace which has a plurality of spaced apart heaters in an elongated passageway and respective thermostats for said heaters; and a controller for selecting a set of settings TSX for said thermostats; said controller including a means for approximating the temperature profile T which will occur in said workpiece as it passes through said furnace passageways by evaluating an equation f(aX, CFY)�T where f( ) is a function of said thermostat settings TSx and a set of thermal parameters aY; and said controller further including a means for compensating for differences between the approximated temperature profile and the actual temperature profile that is produced when said workpiece is passed through said furnace, by modifying said correction factors.