US PATENT SUBCLASS 148 / 559
.~ Heating or cooling of solid metal


Current as of: June, 1999
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148 /   HD   METAL TREATMENT

95  DF  PROCESS OF MODIFYING OR MAINTAINING INTERNAL PHYSICAL STRUCTURE (I.E., MICROSTRUCTURE) OR CHEMICAL PROPERTIES OF METAL, PROCESS OF REACTIVE COATING OF METAL AND PROCESS OF CHEMICAL-HEAT REMOVING (E.G., FLAME-CUTTING, ETC.) OR BURNING OF METAL {17}
559.~ Heating or cooling of solid metal {22}
560  DF  .~.~> Actinide or trans-actinide metal or alloy having greater than 50 percent actinide or trans-actinide metals
561  DF  .~.~> Passing through an amorphous state or treating or producing an amorphous metal or alloy
562  DF  .~.~> Treating single crystal
563  DF  .~.~> Mechanical memory (e.g., shape memory, heat-recoverable, etc.)
564  DF  .~.~> Superplastic (e.g., dynamic recrystallization, etc.)
565  DF  .~.~> Utilizing wave energy (e.g., laser, electromagnetic, etc.) plasma or electron arc or beam
566  DF  .~.~> Electric heating with work as conductor (e.g., alternating current, induction, etc.) {2}
577  DF  .~.~> Chilling to subambient temperature {1}
579  DF  .~.~> Iron(Fe) or iron base alloy {24}
665  DF  .~.~> Beryllium(Be) or beryllium base alloy
666  DF  .~.~> Magnesium(Mg) or magnesium base alloy {1}
668  DF  .~.~> Refractory metal (i.e., titanium(Ti), zirconium(Zr), hafnium(Hf), vanadium(V), niobium(Nb), columbium(Cb), tantalum(Ta), chromium(Cr), molybdenum(Mo), tungsten(W)), or alloy base thereof {3}
674  DF  .~.~> Cobalt(Co) or cobalt base alloy
675  DF  .~.~> Nickel(Ni) or nickel base alloy {1}
678  DF  .~.~> Noble metals (i.e., silver(Ag), gold(Au), osmium(Os), iridium(Ir), platinum(Pt), ruthenium(Ru), rhodium(Rh), palladium(Pd)) or alloy base thereof
679  DF  .~.~> Copper(Cu) or copper base alloy {4}
688  DF  .~.~> Aluminum(Al) or aluminum base alloy {5}
705  DF  .~.~> Zinc(Zn) or zinc base alloy
706  DF  .~.~> Lead(Pb) or lead base alloy
707  DF  .~.~> Over 50 percent metal, but no base
708  DF  .~.~> Treating with specified agent (e.g., heat exchange agent, protective agent, decarburizing agent, denitriding agent, etc.) or vacuum {5}
714  DF  .~.~> Localized or zone heating or cooling treatment


DEFINITION

Classification: 148/559

Heating or cooling of solid metal:

(under subclass 95) Process wherein metal remaining in the solid or semisolid state (i.e., unmelted) throughout the entire process is subjected to a heating or cooling operation.