Lightweight brake disc with maximized heat dissipation performance and manufacturing method thereof
AssigneePukyong National University Industry-University Cooperation Foundation
InventorsJei Pil Wang, Kwon Hoo Kim
Life of this patent
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Abstract
Disclosed is a method for manufacturing a lightweight brake disc with maximized heat dissipation ability. The method includes a first step of mixing gray cast iron and Fe—Cr ferroalloy with each other to produce a mixture, melting and solidifying the mixture to cast an alloy; a second step of heat-treating the alloy cast in the first step to pearlitize a microstructure of the alloy; and a third step of performing nitriding heat treatment of the alloy heat-treated in the second step.
Claims9
A method for manufacturing a lightweight brake disc having maximized heat dissipation ability, the method comprising:
- a first step of mixing gray cast iron and Fe—Cr ferroalloy with each other to produce a mixture, melting and solidifying the mixture to cast an alloy;
- a second step of heat-treating the alloy cast in the first step to pearlitize a microstructure of the alloy, wherein the second step is performed:
- at a reaction temperature of 900° C. or higher,
- under an inert atmosphere as a reaction atmosphere, and
- for a reaction time of 8 hours or larger;
- and
- a third step of performing nitriding heat treatment of the alloy heat-treated in the second step.
A method for manufacturing a lightweight brake disc having maximized heat dissipation ability, the method comprising:
- a first step of mixing gray cast iron and Fe—Cr ferroalloy with each other to produce a mixture, melting and solidifying the mixture to cast an alloy;
- a second step of heat-treating the alloy cast in the first step to pearlitize a microstructure of the alloy;
- and
- a third step of performing nitriding heat treatment of the alloy heat-treated in the second step, wherein the third step is performed:
- at a reaction temperature of 500° C. or higher, and
- for a reaction time of 8 hours or larger.
A method for manufacturing a lightweight brake disc having maximized heat dissipation ability, the method comprising:
- a first step of mixing gray cast iron and Fe—Cr ferroalloy with each other to produce a mixture, melting and solidifying the mixture to cast an alloy;
- a second step of heat-treating the alloy cast in the first step to pearlitize a microstructure of the alloy;
- and
- a third step of performing nitriding heat treatment of the alloy heat-treated in the second step, wherein the third step is performed under an atmosphere in which N2 (nitrogen), NH3 (ammonia) and CO2 (carbon dioxide) are mixed with each other as a reaction atmosphere.
Dependencies are inferred from the claim text.