LEADLESS FREE CUTTING COPPER ALLOY AND PROCESS OF PRODUCTION SAME

PURPOSE: A free cutting leadless copper alloy and a manufacturing method thereof are provided to improve machinability by increasing hardness by adding aluminum and to improve dezincification anti-corrosion property. CONSTITUTION: A free cutting leadless copper alloy is comprised of 57-80 wt% of Cu,...

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Bibliographische Detailangaben
Hauptverfasser:	JU, JANG HO, SHIN, JOONG HYUN, CHO, YOUNG RE, LEE, BUEM JAE, HWANG, IN YOUB, JEONG, MIN JAE
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ALLOYS CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PURPOSE: A free cutting leadless copper alloy and a manufacturing method thereof are provided to improve machinability by increasing hardness by adding aluminum and to improve dezincification anti-corrosion property. CONSTITUTION: A free cutting leadless copper alloy is comprised of 57-80 wt% of Cu, 0.05-3.0 wt% of Ca, 0.1-2.0 wt% of Al, remaining of Zn, and unavoidable impurities. The copper alloy includes one or more kinds selected from group comprised of 0.1-1.0 wt% of Sn, 0.1-2.0 wt% of Mn, 0.1-2.0 wt% of silicon, and 0.001-0.5 wt% of Se. [Reference numerals] (AA) Example 2; (BB) Example 3; (CC) Example 4;