Alkali-and acid-resistant glass composition for the manufacture of glass strands

    公开(公告)号:US09790122B2

    公开(公告)日:2017-10-17

    申请号:US12091615

    申请日:2006-10-23

    CPC分类号: C03C3/087 C03C13/002

    摘要: The present invention relates to a glass composition which is resistant to alkalis and to acids, in particular for the preparation of reinforcing glass strands, which comprises the following constituents within the limits defined below, as percentages by weight: SiO2≧58%, preferably ≦65% ZrO215-20% R2O (R = Na, K or Li)≧14% K2O≦0.1%, preferably ≦0.05%, RO (R = Mg, Ca or Sr)2.5-6% MgO≦4% TiO2>1 and ≦4% the composition additionally being devoid of F, comprising less than 1% of impurities (Al2O3, Fe2O3 and Cr2O3) and satisfying the following relationships: ZrO2+TiO2≧17% ZrO2/TiO2≧6 It also relates to the use of the glass strands obtained in the reinforcing of inorganic materials, for example cementitious materials, or organic materials, for example plastics, and to the composites including such strands.

    Method for replacing cutting members
    89.
    发明授权
    Method for replacing cutting members 有权
    更换切割件的方法

    公开(公告)号:US09487431B2

    公开(公告)日:2016-11-08

    申请号:US11719656

    申请日:2005-11-09

    IPC分类号: C03B37/16 D01G1/04

    摘要: A method enabling maintenance intervention on a chopping machine. In the method at least one strand is drawn through a first chopping assembly in operation, the first chopping assembly including a first chopping wheel and a first anvil wheel, the first chopping assembly being secured to a chassis mounted to move about an axle. The chassis is rotated about its axle until a second chopping assembly initially in a position of non-operation is brought into the vicinity of the strand, the second chopping assembly being secured to the chassis and including a second chopping wheel and a second anvil wheel. The second chopping assembly is set in operation and the strand is led in between the second chopping wheel and the second anvil wheel. The first chopping assembly is brought into the position of non-operation.

    摘要翻译: 一种能够在斩波机上进行维护干预的方法。 在该方法中,至少一根绳索在操作中通过第一切割组件被拉出,第一切割组件包括第一切割轮和第一砧轮,第一切割组件固定到安装成围绕轴移动的底盘。 底架围绕其轴线旋转,直到最初处于非操作位置的第二切割组件被带到线束附近,第二切割组件固定到底盘并包括第二切割轮和第二砧座轮。 第二斩波组件被设置在操作中,并且线束被引导在第二切割轮和第二砧座轮之间。 第一台斩波组件进入非操作状态。