High vacuum apparatus
    1.
    发明授权
    High vacuum apparatus 失效
    高真空装置

    公开(公告)号:US4621985A

    公开(公告)日:1986-11-11

    申请号:US631107

    申请日:1984-07-16

    CPC分类号: F04B37/14

    摘要: A high vacuum apparatus which comprises:a vacuum vessel,a mechanical booster connected to the vacuum vessel,a rotary pump connected to the mechanical booster,a gas inlet provided with a connecting pipe which connects the mechanical booster with the rotary pump, to introduce a gas into the suction side of the rotary pump so as to maintain the degree of vacuum in the suction side of the rotary pump lower than the maximum degree of vacuum attainable of the rotary pump, so that substantially no contamination of the atmosphere in the vacuum vessel by the reverse diffusing oil vapor occurs.

    摘要翻译: 一种高真空装置,包括:真空容器,连接到真空容器的机械助力器,连接到机械助力器的旋转泵,具有连接机械助力器与旋转泵的连接管的气体入口,以引入 气体进入旋转泵的吸入侧,以便将旋转泵的吸入侧中的真空度保持为低于可旋转泵的最大真空度,使得基本上不会在真空容器中污染大气 通过反向扩散油蒸气发生。

    Method for producing electrically conductive zinc oxide
    3.
    发明授权
    Method for producing electrically conductive zinc oxide 失效
    导电氧化锌的制造方法

    公开(公告)号:US4282117A

    公开(公告)日:1981-08-04

    申请号:US43646

    申请日:1979-05-30

    IPC分类号: C01G9/02 H01B1/08 H01B1/06

    CPC分类号: C01G9/02 H01B1/08

    摘要: A method for producing electrically conductive zinc oxide comprising calcining zinc oxide under an ambient atmosphere in a vessel at a temperature from about 800.degree. to about 1100.degree. C. in a mixture thereof with aluminum oxide or a precursor thereof convertible into the oxide under the conditions of treatment in an amount of about 0.05 to about 5 moles based on aluminum atom therein in relation to 100 moles of zinc oxide in the presence of solid carbon. A further improvement in the method comprises mixing zinc oxide with aluminum oxide powder of not more than about 20 millimicrons in average particle size in the dry form to provide a feed mixture, and calcining the mixture, to provide a highly conductive form of zinc oxide.

    摘要翻译: 一种导电性氧化锌的制造方法,其特征在于,在环境气氛下,将容器中的氧化锌在约800℃〜约1100℃的温度下与其氧化铝或其前体在条件下可转化成氧化物的混合物进行煅烧 的处理量相对于固体碳存在下的100摩尔氧化锌,其量为约0.05至约5摩尔,基于铝原子。 该方法的进一步改进包括将氧化锌与干燥形式的平均粒径不超过约20毫微米的氧化铝粉末混合以提供进料混合物,并煅烧该混合物,以提供高导电形式的氧化锌。

    FLAT CUTTING TOOL
    5.
    发明申请
    FLAT CUTTING TOOL 审中-公开
    平面切割工具

    公开(公告)号:US20110030526A1

    公开(公告)日:2011-02-10

    申请号:US12937472

    申请日:2009-05-26

    IPC分类号: B26D1/00

    摘要: A flat cutting tool includes a blade member fixed to a mounting concavity of a base member using a brazing filler metal or an adhesive agent to form a cutting edge on a surface layer side of the blade member. The blade member includes a surface layer which is a high-speed tool steel with a high degree of hardness, a middle layer which is an alloy steel having a lower quench-hardenability than the high-speed tool steel, and a lower layer which is a mild steel having little quench-hardenability, which can be formed by forge welding. The blade member can be quenched and tempered, and the surface layer hardened to a hardness suitable for the cutting tool and fixed to the mounting concavity of the base member.

    摘要翻译: 平切刀具包括使用钎料或粘合剂固定到基底构件的安装凹部的刀片构件,以在刀片构件的表面层侧上形成切削刃。 刀片构件包括具有高硬度的高速工具钢的表面层,具有比高速工具钢更低的淬火淬透性的合金钢的中间层,以及下层 可以通过锻造焊接形成的淬火硬化性低的低碳钢。 刀片构件可以淬火和回火,并且表面层硬化到适合于切削工具的硬度并固定到基座构件的安装凹部。