C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
148/34.4
C21D 1/46 (2006.01) C21D 1/20 (2006.01) C21D 8/06 (2006.01) C21D 9/52 (2006.01)
Patent
CA 1337751
The microstructure of a metallic material is controlled to modify the final ultimate tensile strength of the material. The method involves the steps of continuously moving the material along a path past a heating means and a cooling means. The material is heated by the heating means to an initial temperature to change the material to a first microstructure. As material continues in motion this temperature is reduced by the cooling means according to a selected cooling pattern such that the material changes to a second microstructure that depends on the selected cooling pattern. The material is elongated as it is in motion during both the heating step and the cooling step.
573541
Smart & Biggar
U.s. Automation Co.
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