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    • 7. 发明授权
    • Method of hot rolling copper
    • 热轧铜的方法
    • US4777822A
    • 1988-10-18
    • US127592
    • 1987-12-03
    • Ikuji UemuraFumio OnoEiji KamijoTatsuya NishimotoMatsuo Higuchi
    • Ikuji UemuraFumio OnoEiji KamijoTatsuya NishimotoMatsuo Higuchi
    • C04B35/584C04B35/597B21B27/00
    • C04B35/597C04B35/584
    • The present invention relates to a method of hot rolling copper or copper alloys such as copper wires and coppr plates. The present invention has succeeded in remarkably prolonging useful life of the tools used for hot rolling, and improving the surface quality of the rolled products by replacing the conventional methods of hot rolling copper using tools made of cemented carbide, die steel, high-speed steel, etc. by a method using tolls made essentially of Si.sub.3 N.sub.4. Si.sub.3 N.sub.4 tools used in the present invention contain at least one kind of sintering aid selected from the group consisting of Al.sub.2 O.sub.3, AlN, MgO, Y.sub.2 O.sub.3 and ZrO.sub.2, have a sintering density of 90% or more, Rockwell hardness of 88 or more and an average particle diameter of 2.mu. or less, and contain .beta.-type Si.sub.3 N.sub.4 as a main ingredient.
    • 本发明涉及一种热轧铜或铜合金如铜线和铜板的方法。 本发明成功地延长了用于热轧的工具的使用寿命,并且通过使用由硬质合金,模具钢,高速钢制成的工具代替热轧铜的常规方法来提高轧制品的表面质量 等等,通过使用基本上由Si 3 N 4制成的费用的方法。 本发明中使用的Si 3 N 4工具包含至少一种选自Al 2 O 3,AlN,MgO,Y 2 O 3和ZrO 2的烧结助剂,烧结密度为90%以上,洛氏硬度为88以上,平均粒径为 粒径为2μm以下,含有β型Si 3 N 4为主要成分。