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    • 13. 发明专利
    • POLISHING METHOD FOR MAGNETIC DISC SUBSTRATE
    • JPS62208869A
    • 1987-09-14
    • JP4775386
    • 1986-03-05
    • KOBE STEEL LTD
    • USUI HIDEYOSHIFUJIMOTO HIDEOKANEDA YUTAKA
    • B24B37/00
    • PURPOSE:To secure excellent surface properties, by polishing a substrate with an abrasive, dispersing alumina fine powder of 0.5-5mum in mean grain size into a water system dispersion medium, and then with another abrasive dispersing colloidal silica fine powder of less than 0.2mum in mean grain size, in addition. CONSTITUTION:A magnetic disc substrate is polished with an abrasive which disperses alumina fine powder of 0.5-5mum in mean grain size as much as 1-24wt% into a water system dispersion medium. Afterward, it is additionally polished with another abrasive which disperses colloidal silica fine powder of less than 0.2mum in mean grain size as much as 1-20wt% into the water system dispersion medium. This collidal silica fine powder has an lubricating effect by itself, so that it is usable as a lubricating improver in a rinse process, and abrasion powder produced by the alumina fine powder is easily removable in a short time. In addition, since this colloidal silica fine powder does not include any organic matter, it is in no case adsorbed in a work surface, so that such a substrate that is small in surface roughness and excellent in surface properties is securable.
    • 16. 发明专利
    • Aluminum sheet material for photosensitive drum and its manufacture
    • 用于感光鼓及其制造的铝板材料
    • JPS6144150A
    • 1986-03-03
    • JP16621684
    • 1984-08-08
    • Kobe Steel Ltd
    • INABA TAKASHIUSUI HIDEYOSHI
    • C22C21/00C22C21/06C22F1/047G03G5/10G03G5/14
    • G03G5/102
    • PURPOSE:To obtain the titled Al sheet material superior in productivity and size precision, by heat treating Al ingot contg. respective specified quantities of Mn, Mg, Fe at limited temp. or above, then hot rolling, if necessary cold rolling, then finishing annealing said sheet to regulate average crystal grain diameter of sheet surface to a prescribed value or below. CONSTITUTION:Al ingot contg. 0.13-0.4wt% Mn, 0.1-0.4% Mg, 0.2-1.0% Fe is soaking heat treated by one step or more at >=500 deg.C, then hot rolled to
    • 目的:为了获得生产率和尺寸精度优异的标称Al片材,通过热处理Al锭块 相应规定量的Mn,Mg,Fe在有限温度下。 或以上,然后热轧,如果需要冷轧,则对所述片进行最终退火以将片材表面的平均晶粒直径调节至规定值以下。 规定:铝锭 0.13-0.4wt%Mn,0.1-0.4%Mg,0.2-1.0%Fe在> = 500℃下进行一步或多步热处理,然后热轧至<= 15mm。 板厚。 接下来,对所述板进行精加工退火,进行或不进行冷轧,得到在片材表面上具有<=35μm的平均晶粒直径的所述Al片材。 希望调节收缩率2,<3%的耳朵比例。 片。 以这种方式,可以以良好的生产率制造具有合适的强度,平均晶粒尺寸和优异的强度和尺寸精度的所述Al片材。
    • 18. 发明专利
    • Aluminum alloy substrate for disc having superior suitability to plating
    • 铝合金基板用于具有超级适用性的镀层
    • JPS60194040A
    • 1985-10-02
    • JP2940284
    • 1984-02-18
    • Kobe Steel Ltd
    • USUI HIDEYOSHIKAWAGUCHI MASAHIRO
    • C22C21/06
    • C22C21/06Y10S428/928Y10T428/12736Y10T428/1275Y10T428/12993
    • PURPOSE:To manufacture an Al alloy substrate for a magnetic disc having improved suitability to plating and very small surface roughness by adding specified elements to Al and alloying them. CONSTITUTION:When a substrate for a magnetic disc is made of an Al alloy, an Al alloy contg., by weight, 2-6% Mg, 0.1-1.5% Zn, 0.03-0.40% Cu and 0.01- 0.30% Fe is used. An ingot of the Al alloy is homogenized, hot rolled, cold rolled into a plate, and blanked. The resulting disc is annealed, and the surfaces are machined to manufacture an Al alloy substrate for a magnetic disc. Since the substrate has superior suitability to plating, it is plated with a nonmagnetic material such as Ni-P and subjected to finish polishing, and films of a magnetic body are formed by sputtering. The substrate has very small surface roughness.
    • 目的:为了制造具有改善的电镀适应性和非常小的表面粗糙度的用于磁盘的Al合金基底,通过向Al中加入特定元素并使其合金化。 构成:当用Al合金制成磁盘用基板时,使用重量比为2〜6%的Mg,0.1〜1.5%的Zn,0.03〜0.40%的Cu和0.01〜0.30%的Fe的Al合金 。 将Al合金锭均质化,热轧,冷轧成板,冲切。 将所得的盘退火,并且将表面加工以制造用于磁盘的Al合金基底。 由于基板具有优异的电镀适应性,所以其镀有非磁性材料如Ni-P并进行精加工,并通过溅射形成磁体膜。 基板具有非常小的表面粗糙度。