Prestressing strand having corrosion protection double coatings
    141.
    发明申请
    Prestressing strand having corrosion protection double coatings 有权
    预应力股具有防腐双层涂层

    公开(公告)号:US20070141336A1

    公开(公告)日:2007-06-21

    申请号:US11704930

    申请日:2007-02-12

    Abstract: To improve tensile strength without impairing flexibility and adhesion to concrete, and to form a thick coating in a surface layer part for preventing a basis material from being exposed by damage to the coating, a method of forming double coatings on a prestressing strand includes a primary painting process after a pre-treatment process, in which a resin coating is formed only at the surface layer, a secondary painting process in which respectively individual state resin coating is formed on an outer peripheral face of each of the core wire and surrounding wires under a loosened and separated state, thereby forming a double coating for each surrounding wire, and a finishing process of tightening and retwisting the surrounding wires about the core wire to an original state. The obtained prestressing strand has the double coating portions only at the surface layer and sufficient flexibility and adhesion to concrete.

    Abstract translation: 为了提高拉伸强度而不损害对混凝土的柔软性和粘合性,并且为了防止基材受到涂层的损害而在表面层部分形成厚的涂层,在预应力股线上形成双层涂层的方法包括: 在仅在表层形成树脂涂层的预处理工艺之后的涂漆工艺,在每个芯线和围绕的线的外周面上分别形成各自的状态树脂涂层的二次涂漆工艺 松弛和分离状态,从而形成用于每个周围的线的双重涂层,以及将围绕芯线的周围的线紧固并重新卷绕到原始状态的精加工过程。 所获得的预应力股仅在表面层具有双重涂层部分,并具有足够的柔韧性和对混凝土的粘合性。

    Corrosion resistant PC steel stranded cable and process of and apparatus
for producing the same
    147.
    发明授权
    Corrosion resistant PC steel stranded cable and process of and apparatus for producing the same 失效
    耐腐蚀PC钢绞线及其制造方法及其制造方法

    公开(公告)号:US5263307A

    公开(公告)日:1993-11-23

    申请号:US908883

    申请日:1992-07-07

    Applicant: Takeshi Hasui

    Inventor: Takeshi Hasui

    Abstract: A corrosion resistant PC steel stranded cable for a pretensioning method has a core wire and a plurality of side which are coated firmly for the corrosion proof with paint of a synthetic resin material while maintaining a stabilized stranded condition. The cable comprises the single core wire and the plurality of side wires disposed in a closely contacting relationship with each other and also with the core wire in such a manner as to define a plurality of spiral air gaps between the core wire and the side wires and also to define a plurality of spiral recessed grooves between individual adjacent ones of the side wires on the outer side of the side wires. Each of the core wire and the side wires are processed by blueing in advance. Paint of a synthetic resin material is filled in the spiral air gaps, and a coating layer of paint of a synthetic resin material is formed substantially with a uniform thickness on an entire outer periphery of the side wires including the spiral recessed grooves. A process of and an apparatus for producing such corrosion resistant PC steel stranded cable are also provided.

    Abstract translation: 用于预张紧方法的耐腐蚀PC钢绞合电缆具有芯线和多个侧面,其通过合成树脂材料的涂料牢固地涂覆以防腐蚀,同时保持稳定的搁浅状态。 电缆包括单芯线和多个侧线彼此紧密接触地设置,并且还与芯线以在芯线和侧线之间限定多个螺旋空气间隙的方式,以及 还用于在侧线的外侧上的各个相邻的侧线之间限定多个螺旋凹槽。 芯线和侧线中的每一个都预先通过蓝色处理。 合成树脂材料的涂料被填充在螺旋空气间隙中,并且在包括螺旋形凹槽的侧线的整个外周上形成基本上具有均匀厚度的合成树脂材料的涂料涂层。 还提供了用于生产这种耐腐蚀PC钢绞合电缆的工艺和设备。

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