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28 条记录 (耗时 0.011 秒)

    Wire for dot printer
    2.
    发明公开
    Wire for dot printer 失效
    DrahtfürPunktmatrixdrucker。

    公开(公告)号：EP0452550A1

    公开(公告)日：1991-10-23

    申请号：EP90122967.4

    申请日：1990-11-30

    申请人： HITACHI METALS, LTD.

    发明人： Uchida, Norimasa

    IPC分类号： C22C33/02 ,  C22C38/36 ,  B41J2/25

    CPC分类号： C22C38/36 ,  C22C33/0285 ,  Y10T428/12431

    摘要： A powder metallurgy wire for a dot printer is disclosed which consists, by weight, of 1.5 to 2.8% C, 7.5 to 12.0% Cr, at least one kind selected from the group consisting of not more than 18.0% W and not more than 11.0% Mo which W and Mo meet the relationship of 12≦W+2Mo≦22, 3 to 10% V, 1.0 to 10% Co, not more than 1.0% Si, not more than 1.0% Mn, the balance Fe and incidental impurities, the value of the difference of (C-Ceq) being in the range of -0.5 to -0.15 where Ceq=0.06x%Cr + 0.033x%W + 0.063x%Mo + 0.2x%V. According to the composition, corrosion resistance and wear resistance are considerably improved, with light weight and high toughness.

    摘要翻译： 公开了一种用于点式打印机的粉末冶金线，其重量为1.5至2.8％的C，7.5至12.0％的Cr，至少一种选自不超过18.0％W且不大于11.0 ％Mo，其中W和Mo满足12≤n≤W≤2o0≤22,33-10％V，1.0-10％Co，不大于1.0％Si，不大于1.0％Mn，余量 Fe和偶然杂质，（C-Ceq）的差值在-0.5至-0.15的范围内，其中Ceq = 0.06x％Cr + 0.033x％W + 0.063x％Mo + 0.2x％V。 根据组成，耐腐蚀性和耐磨性得到显着提高，重量轻，韧性高。

    Wire printing head for a high resolution printer
    8.
    发明公开
    Wire printing head for a high resolution printer 失效
    用于高分辨率打印机的电线打印头

    公开(公告)号：EP0409536A3

    公开(公告)日：1991-04-24

    申请号：EP90307761.8

    申请日：1990-07-16

    申请人： Ing. C. Olivetti & C., S.p.A.

    发明人： Bernardis, Francesco ,  Marangon, Claudio

    IPC分类号： B41J2/25 ,  B41J2/265

    CPC分类号： B41J2/255

    摘要： A wire printing head (10) for a high resolution printing machine is provided together with a method for its manufacture. The printer is of the type comprising a printing platen (12) for a recording medium (17) and a carriage (11) transversely movable with respect to the printing platen and mounting the printing head. The head comprises a guide matrix (29) adjacent the platen and a plurality of wires or needles (28) guided by the matrix. The wires are capable of longitudinal movement and define on the recording medium printing dots having an area less than the nominal section Sn of the wires. Each wire comprises a front portion (72) of constant section (Sr) which is reduced with respect to the nominal section (Sn) and extends for a minimised length of between 0.5 and 4 times inclusive the diameter (Dr) of the reduced section. The guide matrix supports slidably a terminal portion of the wires comprising the nominal section and lodges with play the frontal portion having the reduced section.

    Wire member of cemented carbide based on tungsten carbide
    9.
    发明公开
    Wire member of cemented carbide based on tungsten carbide 失效
    基于碳化钨的碳化硅的线路成员

    公开(公告)号：EP0240879A3

    公开(公告)日：1990-04-25

    申请号：EP87104624.9

    申请日：1987-03-27

    申请人： MITSUBISHI MATERIALS CORPORATION

    发明人： Shimada, Fumio ,  Kainuma, Tadahi

    IPC分类号： B41J2/25 ,  C22C29/08

    CPC分类号： B41J2/25 ,  C22C29/08 ,  Y10T428/2913 ,  Y10T428/2918 ,  Y10T428/2927 ,  Y10T428/294 ,  Y10T428/298

    摘要： A wire member of cemented carbide based on tungsten carbide contains a binder phase of 4 to 35 % by weight of at least one metal selected from the group consisting of cobalt and nickel, 1 to 50 ppm by weight of unavoidable impurities and a hard dispersed phase of balance tungsten carbide. The tungsten carbide has an average particle size ranging from 0.2 to 1 µm. A particle size of the impurities is not larger than 10 µm. The distance between an axis of the wire member and a point on a periphery of the wire member disposed farthest from the axis of the wire member is 0.025 to 1 mm. The wire member may contain a binder phase of 15 to 35 % by weight of at least one metal selected from the group consisting of cobalt and nickel, 1 to 50 ppm by weight of unavoidable impurities, and a hard dispersed phase consisting of 0.1 to 40 % by weight of at least one compound selected from the group consisting of carbides of metals in Groups IV A , V A and VI A of the Periodic Table other than tungsten, nitrides of metals in Groups IV A and V A of the Periodic Table and solid solution of at least two of the carbides and nitrides, and balance tungsten carbide. The hard dispersed phase also has an average particle size of 0.2 to 1 µm.