Abstract:
Изобретение относится к канатному производству и может быть использовано для армирования монолитных строений и других изделий из бетона. Задача заключается в создании самовыпрямляющегося арматурного элемента. Арматурный канат содержит центральную проволоку и навитые вокруг нее по спирали повивочные проволоки с периодическим профилем. На наружный участок поверхности повивочных проволок нанесен периодический профиль, выполненный в виде наклонных выступов над образующей обжатой поверхности каната. Участки поверхности повивочных проволок, контактирующие с другими проволоками, выполнены в форме спирально расположенных плоских площадок. Канат закрепляют у основания сооружения и в каждом из циклов заливки фиксируют между ранее сформированной частью сооружения и распределительным шаблоном. Канат подают через обводные ролики и направляющую проводку с катушек, расположенных у основания. Перед каждым циклом заливки шаблон отводят на величину формируемого участка. Каждый арматурный элемент является цельным по всей длине сооружения. Соединение перпендикулярных элементов осуществляют втулками или вязальной проволокой.
Abstract:
The present invention is directed to a steel rope safety system (30) comprising at least one steel rope (10, 20) having at least one strand(22), characterized in that said at least one rope (10, 20) or at least one strand is compacted. Further, the present invention is directed to a method for making a steel rope safety system (30) comprising the step of providing at least two wires (24), the step of stranding the wires thereby forming a strand for a rope and the step of compacting the strand. The present invention is also directed to the use of compacted steel ropes as impact reducing material.
Abstract:
A process for producing a steel cord for pneumatic tyres with a bunch of wires, the core of which consists of wire filaments (10) arranged in a bunch parallel and adjacent to one another. There are advantageously at least three wire filaments (10, 20), where at least two wire filaments (10) are spirally wound as filaments (10) forming a core (60) and run parallel and beside each other and at least one wire filament is spirally wound around the two core filaments (10) as the wrapping wire (20). According to the invention, the spiral deformation of the wire filaments (10) is obtained by false twisters (40). This spiral deformation of the wire filaments (10) especially prevents migration of the filaments from the cord composite. It is an advantage if residual torsional stresses between the core filaments and in connection with the restoring forces of the wrapping wire are relieved. The steel cord also advantageously has a flattened, especially oval, shape.
Abstract:
A steel strand (10) comprises a steel core wire (12). This steel core wire (12) is surrounded by steel layer wires (14) that are twisted around the steel core wire (12). The steel core wire (12) is covered with a thick corrosion resistant core coating (16) provided by strip cladding or by metal extrusion. The steel layer wires (14) are covered with a thin corrosion resistant layer coating (18) provided by a hot dip operation or by an electroplating or chemical plating process. The steel strand (10) is compacted so that said steel layer wires (14) have a non-circular cross-section and that the thick corrosion resistant core coating fills the interstices between the steel core wire (12) and the steel layer wires (14) in order to give the steel strand (10) an improved corrosion resistance and increased lifetime.
Abstract:
A hybrid rope (40) or a hybrid strand (50) comprising a core element (42, 52), a first (44, 54) and a second (46, 56) metallic closed layer surrounding said core element (42, 52). The core element (42, 52) includes a bundle of synthetic yarns. The first metallic closed layer (44, 54) includes a plurality of first strands of wires helically twisted together with the core element (42, 52) in a first direction. The second metallic closed layer (46, 56) includes a plurality of second wires or strands helically twisted together with said core element (42, 52) and said first metallic closed layer (44, 54) in a second direction. The cross-sectional area of the core element (42, 52) is larger than the total cross-sectional area of the first (44, 54) and second (46, 56) metallic closed layers. A corresponding method of producing such a hybrid rope or hybrid strand is also disclosed.
Abstract:
An electric transmission-cable is provided, comprising a cable core having at least two individually coated and stranded wires, and a conductor surrounding the core, wherein the core is compacted. Further, a method of fabricating such compacted steel core is provided.