Annealing process

Details Annealing process Annealing process

C - Chemistry, Metallurgy

21

D

38/19

C21D 1/54 (2006.01) C21D 11/00 (2006.01) G05D 23/19 (2006.01)

Patent

CA 1225522

IMPROVEMENTS TO ANNEALING PROCESS Abstract of the Disclosure A method and an arrangement for following and controlling the progress of heat treatment of cold worked metals in an annealing furnace uses the changing electrical resistivity of the cold worked metal during the annealing process as a process control parameter. A sample of the cold worked metal is placed in a slave furnace along with a sample of the cold worked metal which has been previously annealed. The temperature of the slave furnace is control- led to follow and duplicate the temperature at any point of interest in the annealing furnace, and the differential resistivity between the two samples is measured to follow and control the progress of annealing.

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