Abstract:
Le câble métallique multi-torons à deux couches comprend: - une couche interne (C1) constituée d'un toron interne (Tl), - une couche externe (C2) constituée de L>1 torons externes (TE). Chaque toron interne et externe (Tl, TE) comprend : - une couche interne (12, 12') respectivement constituée d'un fil interne (F1, F1'), - une couche intermédiaire (14, 14') respectivement constituée de M, M' fils intermédiaires (F2, F2'), et - une couche externe (16, 16') respectivement constituée de N, N' fils externes (F3, F3'). Le diamètre Dl du toron interne (Tl) est supérieur au diamètre DE de chaque toron externe (TE). Chaque fil externe (F3) présente un diamètre d3 supérieur au diamètre d3' de chaque fil externe (F3). La couche externe (16') de chaque toron externe (TE) est insaturée.
Abstract:
A wire strand (10) comprises a plurality of wires (12, 16, 20). The wires comprise a central king wire (12), a first layer (14) of wires (16) arranged around the king wire, and a second layer (18) of wires (20) arranged around the first layer. The king wire is formed of steel having a carbon content of at least 0.3 wt%. Each wire of the first layer is formed of steel having a carbon content which is less than the carbon content of the king wire. Each wire of the second layer is formed of steel having a carbon content which is greater than, or the same as, the carbon content of the wires of the first layer.
Abstract:
A wire strand (10) comprises a plurality of wires (12, 16, 20). The wires comprise a central king wire (12), a first layer (14) of wires (16) arranged around the king wire, and a second layer (18) of wires (20) arranged around the first layer. The king wire is formed of steel having a carbon content of at least 0.3 wt%. Each wire of the first layer is formed of steel having a carbon content which is less than the carbon content of the king wire. Each wire of the second layer is formed of steel having a carbon content which is greater than, or the same as, the carbon content of the wires of the first layer.
Abstract:
A steel cord (10) adapted for the reinforcement of rubber products, comprises a core strand (12) and six peripheral strands (14) concentrically surrounding the core strand (12). Each of the core and peripheral strands (12, 14) comprises a centre of two or more centre filaments (16) and two layers of filaments surrounding the centre. The core strand (12) has a diameter D1 which is greater than the diameter D2 of the peripheral strands (14). All the filaments (18, 20) of each layer have substantially the same diameter and a radially outer layer has a twist angle which is greater than a twist angle of a radially inner layer of the same strand. Each of the strands (12, 14) in the cord is composed of no more than twenty-six filaments (16, 18, 20) being twisted together.
Abstract:
The invention relates to a steel cord (C-1) with three layers (C1, C2, C3) and a 3+M+N structure, that is rubberized in situ and comprises: a first layer or central layer (C1) formed by two wires (10) of diameter d1 assembled in a helix at a pitch p1; a second layer (C2) formed by M wires (11) of diameter d2, which are wound around the central layer (C1) in a helix at a pitch p2; and a third layer (C3) formed by N wires (12) of diameter d3, which are wound around the second layer in a helix at a pitch p3. The cord is characterised in that it has the following characteristics: (d1, d2, d3, p1, p2 and p3 being expressed in mm): - 0.08 = d1 = 0.5; - 0.08 = d2 = 0.5; - 0.08 = d3 = 0.5; - 3 1 2 3
Abstract:
The present invention provides structure of steel cord in heavy duty tires, in which the adhesive strength between filament and rubber, and penetrating property of rubber are improved by making the twist direction of core and strand different in the steel cord comprising core and strand filament, and by making the pitch or the twist period of core and strand different. In particular, this structure is applied to steel cord of 3+8*d(HT) which is used in heavy duty tires. In this application, twist direction of core filament is in the S direction and twist direction of strand filament is in the Z direction, and the ratio of the pitch of core filament (CP) and the pitch of strand filament (SP) is between 0.50 and 0.94.
Abstract:
The reinforcing cord is made from carbon steel strands forming a central core and one or two layers of twisted outer strands, with a rubber sleeve encasing the core where the cord comprises a core and one layer, or the inner layer where the cord consists of a core and two layers. The rubber sleeve can be of natural rubber with a reinforcing charge of carbon block or synthetic rubber, with a secant modulus on extension of under 20 MPa; its mean thickness is between 0.010 and 0.040 mm.
Abstract:
본 발명에 따르면, 소정 위치에서 고무 처리되는 3개의 층(C1, C2, C3)을 갖는 금속 코드(C-1)로서, 직경 d 1 의 코어 또는 제1 층(10, C1)과; 제1 층 주위에 피치 p 2 로 나선형으로 함께 권취되는 직경 d 2 의 N개의 와이어(11)를 갖는 제2 층(C2)과; 제2 층 주위에 피치 p 3 으로 나선형으로 함께 권취되는 직경 d 3 의 P개의 와이어(12)를 갖는 제3 층(C3)을 포함하는, 코드에 있어서, 다음의 특징을 갖는 것을 특징으로 하는 코드(d 1 , d 2 , d 3 , p 2 및 p 3 의 단위: ㎜)가 제공된다. 즉, - 0.08≤d 1 ≤0.50; - 0.08≤d 2 ≤0.45; - 0.08≤d 3 ≤0.45; - 5.1π(d 1 +d 2 ) 2 3 1 +2d 2 +d 3 ); - 임의의 2 ㎝ 길이의 코드에 대해, "충전 고무"(13)로서 호칭되는 고무 조성물이 한편으로는 코어(C1)와 제2 층(C2)의 N개의 와이어(11) 사이에 그리고 다른 한편으로는 제2 층(C2)의 N개의 와이어(11)와 제3 층(C3)의 P개의 와이어(12) 사이에 놓인 모세관(14)의 각각 내에 존재하고; - 코드 내에서의 충전 고무(13)의 함량은 코드의 g당 10 ㎎과 50 ㎎ 사이에 있다. 또한, 본 발명에 따르면, 그 스트랜드들 중 적어도 하나가 본 발명에 따른 소정 위치에서 고무 처리되는 3층 금속 코드(C-1)인 다중-스트랜드 코드가 제공된다.