WO2019079989A1 - 一种用于加强橡胶制品的钢帘线及其橡胶制品 - Google Patents

一种用于加强橡胶制品的钢帘线及其橡胶制品

Info

Publication number
WO2019079989A1
WO2019079989A1 PCT/CN2017/107592 CN2017107592W WO2019079989A1 WO 2019079989 A1 WO2019079989 A1 WO 2019079989A1 CN 2017107592 W CN2017107592 W CN 2017107592W WO 2019079989 A1 WO2019079989 A1 WO 2019079989A1
Authority
WO
WIPO (PCT)
Prior art keywords
wire
steel
steel cord
core
reinforcing
Prior art date
Application number
PCT/CN2017/107592
Other languages
English (en)
French (fr)
Inventor
刘祥
姚海东
苗为钢
胡自明
Original Assignee
江苏兴达钢帘线股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 江苏兴达钢帘线股份有限公司 filed Critical 江苏兴达钢帘线股份有限公司
Publication of WO2019079989A1 publication Critical patent/WO2019079989A1/zh

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core

Definitions

  • the invention belongs to the technical field of rubber products, and in particular relates to a steel cord and a rubber product thereof for reinforcing rubber products.
  • Steel cords are widely used in rubber products, such as automobile tires, conveyor belts, high-pressure hoses, etc. As a reinforcing material for rubber products, high strength and good fatigue resistance are required.
  • a structural steel cord N ⁇ 1 (N is the number of steel wires) is often used, such as 3 ⁇ 1, 4 ⁇ 1, 5 ⁇ 1, etc., but when N is not less than 3, such steel cord
  • N is the number of steel wires
  • the cord of the open structure can be deformed and then twisted together, and the steel wires are not in contact with each other, so that the effect of the full-penetration can be achieved.
  • a steel cord is described in the patent application No. 5,687,557, but In order to keep the open type of the steel wire, the structure is unstable, and at the same time, the wire is susceptible to damage during the deformation process, the breaking force is lowered, and the fatigue resistance is lowered.
  • a steel cord with a structure of m+n (m is the number of core wires, n is the number of outer wires) such as 2+1, 2+2, 3+2, etc., which can be embedded in rubber.
  • m is the number of core wires
  • n is the number of outer wires
  • a full-penetration effect is achieved, for example, a steel cord of such a structure is described in the patent application No. US 4,084,844, but there is a point contact between the steel cord core wire and the outer wire, which is formed under stress Stress concentration reduces the fatigue resistance of steel cords.
  • the object of the present invention is to overcome the deficiencies in the prior art and to provide a steel cord and a rubber product thereof for reinforcing a rubber product, which can reduce stress concentration, improve full penetration performance and fatigue resistance.
  • the present invention discloses a steel cord for reinforcing a rubber product, comprising: a core steel wire and an outer steel wire; the core steel wire is a circular steel wire, and the outer steel wire is a flat steel wire,
  • the cross section has a pair of parallel straight sides and a pair of symmetrical arc edges; the number of core wires is two to four and arranged in parallel with each other, the number of outer wires is one to four; When the number is one, it is twisted on the core wire in a spiral form; when the number of the outer wire is two to four, it is twisted on the core wire in a spiral pattern parallel to each other;
  • the wall between the side wall and the outer wall of the core wire is in line contact.
  • the cross section of the outer layer steel wire has a major axis parallel to the straight side and a minor axis perpendicular to the straight side; the ratio of the size of the major axis to the dimension of the minor axis Rax is 1 ⁇ Rax ⁇ 2.
  • the ratio Rax of the dimension of the major axis to the dimension of the minor axis is 1.2 ⁇ Rax ⁇ 1.8.
  • the major axis has a size of 0.1 to 0.6 mm.
  • the major axis has a size of 0.2 to 0.45 mm.
  • the diameter of the core wire is 0.1 to 0.6 mm.
  • the core wire has a diameter of 0.2 to 0.4 mm.
  • the number of core wires is two or three.
  • the number of outer steel wires is one or two.
  • the core wire and the outer wire have a carbon content of not less than 0.6%.
  • the surfaces of the core wire and the outer wire have a rubber-promoting layer.
  • the present invention also discloses a rubber article using the above steel cord.
  • the rubber article is a tire, a conveyor belt or a hose.
  • the invention has the beneficial effects of reducing stress concentration, improving the bleed performance and fatigue resistance, and also making the rubber ply thinner, reducing the rubber material and the production cost because of its smaller diameter.
  • Figure 1 is a cross-sectional view showing the outer layer of the steel wire of the present invention
  • Figure 2 is a schematic structural view (2+1 form) of Embodiment 1 of the present invention.
  • FIG. 3 is a schematic structural view of a double twisting machine for manufacturing a steel cord according to Embodiment 1 of the present invention
  • Figure 4 is a schematic structural view (2+2 form) of Embodiment 2 of the present invention.
  • Fig. 5 is a schematic view showing the structure of a tube winding machine for manufacturing a steel cord according to a second embodiment of the present invention.
  • a flat steel wire refers to a steel wire having a cross section including two parallel straight sides and two arc edges which are respectively connected to both ends of the straight sides and which are symmetrical. In a direction perpendicular to the straight side, the distance between the two straight sides is the minor axis dimension of the flat steel wire; in the direction parallel to the straight side, the maximum distance between the two arc edges is the flat wire The long axis size. Based on the shape of the cross section it can be determined that the flat steel wire has two parallel and linearly extending walls and two symmetrical and curved walls.
  • the manufacturing process of the circular steel wire includes:
  • Step 1 Pretreatment of the wire rod surface: mechanically descale, clean, coat boron and dry the surface of the wire rod with a carbon content of 0.60 to 1.00% and a diameter of 5.00 to 7.00 mm.
  • Step 2 Dry pull (including one straight pull or two dry pull): one straight pull is to pull the surface pretreated strip on a straight-through dry puller into a wire with a diameter of 1.20 ⁇ 2.00mm; The total compression ratio of the steel wire is very large, or the drawability of the wire rod is poor, and the large compression ratio cannot be satisfied.
  • two dry pulls can be used, and the two dry pulls are used to straighten the surface pretreated wire rod.
  • the wire drawing machine is drawn into a steel wire with a diameter of 2.50 to 3.50 mm, and the wire having a diameter of 2.50 to 3.50 mm is heated to austenite at a temperature of 900 to 1100 ° C, and then at a temperature of 500 to 600 ° C.
  • the lower quenching becomes pearlite, cleaned, coated with boron, dried, and then drawn on a dry puller to a steel wire having a diameter of 0.80 to 2.00 mm.
  • Step 3 Heat treatment electroplating: the steel wire obtained in the step 2 is heated to austenite at a temperature of 900 to 1100 ° C, quenched into pearlite at a temperature of 500 to 600 ° C; and then subjected to pickling, water washing, copper plating, Washed, galvanized, thermally diffused, phosphated, washed, and dried.
  • the steel wire obtained in the step 2 may be subjected to an electroplated zinc layer or a hot-dip galvanized layer.
  • Step 4 The steel wire obtained in the step 3 is drawn into a circular steel wire having a diameter of 0.10 to 0.60 mm by multi-pass drawing in a water tank drawing machine, and the tensile strength of the obtained steel wire is usually more than 2000 MPa.
  • the flat steel wire is produced by drawing one or more molds for forming a flat steel wire with a long axis of 0.10 to 0.60 mm, or one or more sets of two-roll rolling mills. A flat steel wire having a long axis of 0.10 to 0.60 mm is obtained by rolling.
  • the ratio Rax of the dimension of the long axis of the flat-shaped steel wire to the dimension of the minor axis is 1 ⁇ Rax ⁇ 2
  • the ratio Rax of the dimension of the major axis to the dimension of the minor axis is 1.2 ⁇ Rax ⁇ 1.8.
  • the flat-shaped steel wire has an influence on the strength of the arc-side radius.
  • the radius of the flat-shaped steel wire corresponding to the arc-side radius is determined on the one hand by the diameter of the round steel wire before molding. The larger the diameter of the round steel wire before molding, the flat arc corresponding to the arc can be obtained. The larger the radius of the edge, the smaller the diameter of the round wire before forming, the smaller the radius of the arc of the flat wire can be obtained.
  • the radius of the arc corresponding to the flat wire is also determined by the shape of the die.
  • the flat-shaped steel wire is generally designed to correspond to the arc-edge radius according to the steel cord diameter or the tensile strength requirement of the steel cord, and the long-axis can be freely formed by rolling.
  • Steel cord twisting process a round steel wire is used as a core steel wire, and a flat steel wire is used as an outer steel wire paying wire, and the steel cord is obtained by twisting a double twisting machine, a pipe twisting machine or the like.
  • a steel cord comprises: two core wires and one outer wire; the core wire is a circular wire, and the outer wire is a flat wire; the core wire is untwisted and mutually Arranged in parallel, the outer steel wire is twisted in a spiral form on the core wire while maintaining a line contact between the outer wire and the core wire.
  • the core wire has a diameter of 0.30 mm
  • the outer wire has a major axis dimension of 0.34 mm, a minor axis dimension of 0.26 mm, and a radius of 0.15 mm.
  • the linearly extending wall of the outer wire is in line contact with the core wire to form a steel cord having a diameter of 0.73 mm.
  • the carbon content of the core wire and the outer wire was 0.82%.
  • the surfaces of the core wire and the outer wire have a rubber-promoting layer including, but not limited to, a copper layer, a zinc layer, a brass layer, and a silane coupling agent.
  • the spools 311, 312 for supplying the core wire 21 are located outside the two flywheels 341, 342.
  • the circular wire is inserted between the flywheels 341, 342 via the splitter disk 321, the guide wheel 331, and the guide wheel 332, it is twisted twice in the first direction (for example, the Z direction).
  • a spool 313 for supplying a flat wire is placed inside the double twister, and the flat wire and the round wire are guided together by the wire 351.
  • the circular wire and the flat wire are guided by the guide wheel 333 and the guide wheel 334 from between the two flywheels 341, 342 and guided to the take-up spool 361, and are subjected to two along the second direction (for example, the S-direction). Twisted.
  • the steel cord in the present embodiment is 3 ⁇ 0.30HT, which is a steel cord in the prior art. 2+1 ⁇ 0.30HT was compared and the test results are shown in Table 1.
  • the steel cord in this embodiment has a better air retention rate under the vulcanization condition than the control A, and the steel cord in this embodiment can reach the full-penetration rubber in the vulcanization of the rubber. Effect.
  • the steel cord in this example has better fatigue resistance than the control B.
  • the steel cord in this embodiment includes two core wires and two outer wires.
  • the core wires are arranged in a non-twisted and mutually parallel form, and the outer wires are twisted in a spiral and mutually parallel form to the periphery of the core wire while maintaining a line contact fit between the outer wire and the core wire.
  • the core wire has a diameter of 0.25 mm
  • the outer wire has a major axis dimension of 0.28 mm, a minor axis dimension of 0.22 mm, and a radius of 0.13 mm.
  • the linearly extending wall of the outer wire is in line contact with the core wire to form a steel cord having a diameter of 0.65 mm.
  • the two pay-off spools 611, 612 are used to supply the core wire, and the core wire passes through the splitter disk 621 and the two guide wheels 631, 632 and then enters the deformer 671 for deformation, and then the tube is deformed.
  • the center of the tube 641 of the machine passes through.
  • the outer steel wire is guided to the side of the tube 641 via three guide wheels 633, 634, 635, and the flat steel wire and the circular steel wire are guided together by the collecting nozzle 651, and finally wound up on the take-up spool 661.
  • the core wires are not twisted and arranged in parallel, and the outer wires are spirally wound around the core wires in one direction (for example, the S ⁇ direction) to obtain steel cords.
  • the steel cord in this embodiment was compared with the prior art steel cord 4 ⁇ 0.25, 2+2 ⁇ 0.25, and the test results are shown in Table 2.
  • the steel cord in this embodiment has a better air retention rate under the vulcanization condition than the control group C, and the steel cord in this embodiment can achieve full penetration of the rubber when the rubber is vulcanized. Effect.
  • the steel cord in this example has better fatigue resistance than the control D.
  • Embodiment 1 can also be manufactured in the manner of FIG. 5, in which the wire-discharging method uses two I-shaped wheels for the core wire payout and one I-shaped wheel for the outer wire release.
  • the embodiment 2 can also be manufactured in the manner of FIG. 3, in which the wire-laying method uses two I-shaped wheels for the core wire laying and the two wire-shaped wires for the outer wire.
  • the number of the spools for setting the core wire payout or the outer wire payout can be changed to obtain steel cords of other structural types.
  • the steel cord in this embodiment includes three core wires and two outer wires.
  • the core wire has a diameter of 0.30 mm
  • the outer wire has a major axis dimension of 0.32 mm, a minor axis dimension of 0.28 mm, and a radius of 0.16 mm.
  • the linearly extending wall on the outer wire is in line contact with the core wire to form a steel cord having a diameter of 0.90 mm.
  • the steel cord in this embodiment is compared with the steel cord 3+2 ⁇ 0.30NT in the prior art.
  • the results of the test are shown in Table 3.
  • Example 3 compared with the control group E, the effect of the total osmosis was achieved when the rubber was vulcanized, and the example 3 had better fatigue resistance.
  • the steel cord in this embodiment includes four core wires and three outer wires.
  • the core wire has a diameter of 0.35 mm
  • the outer wire has a major axis dimension of 0.37 mm, a minor axis dimension of 0.32 mm, and a radius of 0.18 mm.
  • the linearly extending wall on the outer wire is in line contact with the core wire to form a steel cord having a diameter of 1.17 mm.
  • the steel cord in this embodiment is compared with the steel cord 4+3 ⁇ 0.35ST in the prior art, and the test results are shown in Table 3.
  • the example 4 can be fully cured in the rubber vulcanization.
  • the effect of the cementation, while Example 4 has better fatigue resistance.
  • the steel cord in this embodiment includes two core wires and three outer wires.
  • the core wire has a diameter of 0.30 mm
  • the outer wire has a major axis dimension of 0.40 mm, a minor axis dimension of 0.20 mm, and a radius of 0.10 mm.
  • a linearly extending wall on the outer wire and a core wire forming a line contact twisting engagement A steel cord having a diameter of 0.85 mm was formed.
  • the steel cord in this embodiment has a better air retention rate under the vulcanization condition than the control group G, and the steel cord in this embodiment can achieve full penetration of the rubber when the rubber is vulcanized. Effect.
  • the steel cord in this example has better fatigue resistance than the control group H.
  • the steel cord obtained by the above method can be widely used in the manufacture of rubber articles such as tires, conveyor belts or hoses.
  • the above is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention. It should also be considered as the scope of protection of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ropes Or Cables (AREA)
  • Tires In General (AREA)

Abstract

一种用于加强橡胶制品的钢帘线（10；40）及橡胶制品，包括：芯部钢丝（21，22；51，52）和外层钢丝（11；41，42）；其特征在于：所述芯部钢丝（21，22）为圆形钢丝，所述外层钢丝（11；41，42）为扁平形钢丝；所述芯部钢丝（21，22；51，52）的数目为二至四个并以互为平行的形式排列，所述外层钢丝（11；41，42）的数目为一至四个；所述外层钢丝（11；41，42）的数目为一个时，其以螺旋形式捻合于所述芯部钢丝（21，22；51，52）上；所述外层钢丝（11；41，42）的数目为二至四个时，其以互为平行的螺旋形式捻合于所述芯部钢丝（21，22；51，52）上；所述外层钢丝（11；41，42）与所述芯部钢丝（21，22；51，52）之间为线接触捻合。该钢帘线结构能够降低应力集中，提高渗胶性能和抗疲劳性能。

Description

一种用于加强橡胶制品的钢帘线及其橡胶制品 技术领域
本发明属于橡胶制品技术领域，具体涉及一种用于加强橡胶制品的钢帘线及其橡胶制品。
背景技术
钢帘线广泛应用于橡胶制品，如汽车轮胎、传送带、高压胶管等，作为橡胶制品的增强材料，要求具有较高的强度和良好的抗疲劳性能。其中，一种结构的钢帘线N×1(N为钢丝数量)被经常应用，如3×1、4×1、5×1等，但是，当N不小于3时，这种钢帘线在捻合过程中几根钢丝中间会形成空腔，硫化时橡胶不能完全渗入，容易有水汽进入，降低了钢帘线的使用寿命。
开放型结构的帘线可以把钢丝进行变形然后捻合在一起，钢丝之间互不接触，能实现全渗胶的效果，例如申请号为US5687557的专利文本中记载了一种钢帘线，但是为了保持钢丝的开放型会使得结构不稳定，同时钢丝变形过程中易受损伤，破断力降低，抗疲劳性能下降。
除此之外，还有一种结构为m+n的钢帘线(m为芯部钢丝数量，n为外层钢丝数量)如2+1、2+2、3+2等，可以在嵌入橡胶时实现全渗胶效果，例如申请号为US4408444的专利文本中记载了这种结构的钢帘线，但是这种钢帘线芯部钢丝和外层钢丝之间存在点接触，在应力作用下形成应力集中，降低了钢帘线的抗疲劳性能。
发明内容
本发明的目的在于克服现有技术中的不足，提供一种用于加强橡胶制品的钢帘线及其橡胶制品，能够降低应力集中，提高全渗胶性能和抗疲劳性能。
为解决现有技术问题，本发明公开了一种用于加强橡胶制品的钢帘线，包括：芯部钢丝和外层钢丝；芯部钢丝为圆形钢丝，外层钢丝为扁平形钢丝，其横截面具有一对平行的直边和一对对称的弧边；芯部钢丝的数目为二至四个并以互为平行的形式排列，外层钢丝的数目为一至四个；外层钢丝的数目为一个时，其以螺旋形式捻合于芯部钢丝上；外层钢丝的数目为二至四个时，其以互为平行的螺旋形式捻合于芯部钢丝上；外层钢丝上直边所在的壁与芯部钢丝的外壁之间为线接触捻合。
进一步地，外层钢丝的横截面具有平行于直边的长轴和垂直于直边的短轴；长轴的尺寸与短轴的尺寸的比值Rax为1＜Rax≤2。
进一步地，长轴的尺寸与短轴的尺寸的比值Rax为1.2≤Rax≤1.8。
进一步地，长轴的尺寸为0.1～0.6mm。
进一步地，长轴的尺寸为0.2～0.45mm。
进一步地，芯部钢丝的直径为0.1～0.6mm。
进一步地，芯部钢丝的直径为0.2～0.4mm。
进一步地，芯部钢丝的数目为二或三个。
进一步地，外层钢丝的数目为一或二个。
进一步地，芯部钢丝和外层钢丝的碳含量不低于0.6％。
进一步地，芯部钢丝和外层钢丝的表面具有促橡胶粘合层。
本发明还公开了采用上述钢帘线的一种橡胶制品。
进一步地，橡胶制品为轮胎、传送带或胶管。
本发明具有的有益效果：能够降低应力集中，提高渗胶性能和抗疲劳性能；此外还因为其具有更小的直径而使橡胶帘布层更薄，减少橡胶用料及生产成本。
附图说明
图1是本发明中外层钢丝的横截面剖视图；
图2是本发明中实施例一的结构示意图(2+1形式)；
图3是制造本发明中实施例一所示钢帘线的双捻机的结构示意图；
图4是本发明中实施例二的结构示意图(2+2形式)；
图5是制造本发明中实施例二所示钢帘线的管捻机的结构示意图。
附图标记：
10钢帘线；11外层钢丝；21芯部钢丝；22芯部钢丝；311放线工字轮；312放线工字轮；313放线工字轮；321分线盘；322分线盘；331导轮；332导轮；333导轮；334导轮；341飞轮；342飞轮；351集线嘴；361收线工字轮。
40钢帘线；41外层钢丝；42外层钢丝；51芯部钢丝；52芯部钢丝；611放线工字轮；612放线工字轮；613放线工字轮；614放线工字轮；621分线盘；631导轮；632导轮；633导轮；634导轮；635导轮；641管筒；651集线嘴；661收线工字轮。
具体实施方式
下面结合附图对本发明作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。
如图1所示，本发明中，扁平形钢丝是指横截面包括两个平行的直边和两个分别连接两个直边两端且成对称的弧边的钢丝。在垂直于直边的方向上，两个直边之间的距离为该扁平形钢丝的短轴尺寸；在平行于直边的方向上，两个弧边之间的最大距离为该扁平形钢丝的长轴尺寸。基于横截面的形状可以确定扁平形钢丝具有两个平行且沿直线延伸的壁和两个对称且具有弧度的壁。
本发明中，圆形钢丝的制作过程包括：
步骤1.盘条表面预处理：将碳含量为0.60～1.00％、直径为5.00～7.00mm的盘条表面进行机械除鳞、清洗、涂硼、烘干。
步骤2.干拉(包括一次直拉或两次干拉)：一次直拉即把表面预处理的盘条在直进式干拉机上拉拔为直径为1.20～2.00mm的钢丝；当拉拔钢丝的总压缩率很大，或者盘条的可拉拔性能较差不能满足较大压缩率拉拔时，可采用两次干拉，两次干拉即把表面预处理的盘条在直进式干拉机上拉拔为直径为2.50～3.50mm的钢丝，对拉拔的直径为2.50～3.50mm的钢丝在900～1100℃的温度下加热成为奥氏体，然后在500～600℃的温度下淬火成为珠光体，清洗、涂硼、烘干，再次在干拉机上拉拔为直径为0.80～2.00mm的钢丝。
步骤3.热处理电镀：将步骤2得到的钢丝在900～1100℃的温度下加热成为奥氏体，在500～600℃的温度下淬火成为珠光体；再依次进行酸洗、水洗、镀铜、水洗、镀锌、热扩散、磷化、水洗、烘干。另外也可以将步骤2得到的钢丝进行电镀锌层或热镀锌层。
步骤4.湿拉：将步骤3得到的钢丝在水箱拉丝机中采用多道次拉拔成为直径为0.10～0.60mm的圆形钢丝，得到的钢丝的拉伸强度通常大于2000Mpa。
扁平形钢丝的制作过程为：采用一个或多个配合成型的模具对圆形钢丝拉拔获得长轴为0.10～0.60mm的扁平形钢丝，也可以采用一组或多组两辊轧机对圆钢丝轧制获得长轴为0.10～0.60mm的扁平形钢丝。
扁平形状钢丝长轴的尺寸与短轴的尺寸的比值Rax为1＜Rax≤2，进一步地长轴的尺寸与短轴的尺寸的比值Rax为1.2≤Rax≤1.8。如果扁平形状钢丝长轴 的尺寸与短轴的尺寸的比值较大，则加工难度增加，扁平形状钢丝的强度降低。
扁平形钢丝对应弧边半径对强度有影响，扁平形钢丝对应弧边半径大小一方面决定于成型前圆形钢丝的直径，成型前圆形钢丝直径越大，则可以获得的扁平形钢丝对应弧边半径会越大，成型前圆形钢丝直径越小，则可以获得的扁平形钢丝对应弧边半径会越小，另一方面扁平形钢丝对应弧边半径也决定于模具的形状。在实施过程中，一般根据钢帘线直径或钢帘线拉伸强度要求而设计扁平形钢丝对应弧边半径，也可以采用辊轧的方式让长轴自由成形。
钢帘线捻合过程：把圆形钢丝作为芯部钢丝，扁平钢丝作为外层钢丝放线，通过双捻机、管捻机等捻合得到所述钢帘线。
实施例1
如图2所示，一种钢帘线，包括：两个芯部钢丝和一个外层钢丝；芯部钢丝为圆形钢丝，外层钢丝为扁平形钢丝；芯部钢丝以非扭绞且互为平行的形式排列，外层钢丝以螺旋形式捻合于芯部钢丝上同时保持外层钢丝与芯部钢丝之间为线接触捻合。
芯部钢丝的直径为0.30mm，外层钢丝的横截面的长轴尺寸为0.34mm，短轴尺寸为0.26mm，弧边半径为0.15mm。外层钢丝上沿直线延伸的壁与芯部钢丝构成线接触式的扭绞啮合形成直径为0.73mm的钢帘线。
芯部钢丝和外层钢丝的碳含量为0.82％。
芯部钢丝和外层钢丝的表面具有促橡胶粘合层，促橡胶粘合层包括但不限于铜层、锌层、黄铜层、硅烷偶联剂。
如图3所示，用于供应芯部钢丝21的工字轮311、312位于两个飞轮341、342的外部。圆形钢丝经分线盘321、导轮331和导轮332进入飞轮341、342之间时，沿着第一方向(例如Z捻方向)受到两次扭绞。用于供应扁平形钢丝的工字轮313位于双捻机内部，通过集线嘴351把扁平形钢丝和圆形钢丝引导在一起。圆形钢丝和扁平形钢丝经导轮333和导轮334从两个飞轮341、342之间导出并引导至收线工字轮361过程中，沿着第二方向(例如S捻方向)受到两次扭绞。由于Z向扭绞和S向扭绞补偿，芯部的两个圆形钢丝之间没有扭绞且相互平行。扁平形钢丝则经过在第二方向扭绞螺旋缠绕在芯部钢丝上，由此获得“2+1”型钢帘线。将本实施例中的钢帘线与现有技术中的钢帘线3×0.30HT、 2+1×0.30HT进行比较试验，试验结果见表1。
表1
Figure PCTCN2017107592-appb-000001
从表1可以看出，本实施例中的钢帘线与对照组A相比在硫化条件下有更好的空气保持率，本实施例中的钢帘线可以在橡胶硫化时达到全渗胶的效果。本实施例中的钢帘线与对照组B相比有更好的抗疲劳性能。
实施例2
与实施例1不同之处在于，本实施例中的钢帘线包括两个芯部钢丝和两个外层钢丝。芯部钢丝以非扭绞且互为平行的形式排列，外层钢丝以螺旋且互为平行的形式捻合于芯部钢丝外围同时保持外层钢丝与芯部钢丝之间为线接触捻合。
芯部钢丝的直径为0.25mm，外层钢丝的横截面的长轴尺寸为0.28mm，短轴尺寸为0.22mm，弧边半径为0.13mm。外层钢丝上沿直线延伸的壁与芯部钢丝构成线接触式的扭绞啮合形成直径为0.65mm的钢帘线。
如图5所示，两个放线工字轮611、612用于供应芯部钢丝，芯部钢丝经分线盘621和两个导轮631、632后进入变形器671进行变形，然后从管捻机的管筒641中心穿过。外层钢丝经过三个导轮633、634、635引导至管筒641一侧，通过集线嘴651把扁平形钢丝和圆形钢丝引导在一起，最后收卷在收线工字轮661上。芯部钢丝未受到扭绞且为平行排列，外层钢丝沿着一个方向(例如S捻方向)螺旋缠绕在芯部钢丝上，获得钢帘线。
本实施例中的钢帘线与现有技术中的钢帘线4×0.25、2+2×0.25进行比较试验，试验结果见表2。
表2
Figure PCTCN2017107592-appb-000002
从表2可以看出，本实施例中的钢帘线与对照组C相比在硫化条件下有更好的空气保持率，本实施例中的钢帘线可以在橡胶硫化时达到全渗胶的效果。本实施例中的钢帘线与对照组D相比有更好的抗疲劳性能。
应当说明的是，实施例1也可用图5的方式制造，放线方式为芯部钢丝放线采用2个工字轮，外层钢丝放线采用1个工字轮。
同样，实施例2也可用图3的方式制造，放线方式为芯部钢丝放线采用2个工字轮，外层钢丝放线采用2个工字轮。
另外，对图3或图5或以外的方式，改变设置芯部钢丝放线或外层钢丝放线的工字轮个数，可以获得其他结构类型的钢帘线。
实施例3
本实施例中的钢帘线包括三个芯部钢丝和二个外层钢丝。芯部钢丝的直径为0.30mm，外层钢丝的横截面的长轴尺寸为0.32mm，短轴尺寸为0.28mm，弧边半径为0.16mm。外层钢丝上沿直线延伸的壁与芯部钢丝构成线接触式的扭绞啮合形成直径为0.90mm的钢帘线。
本实施例中的钢帘线与现有技术中的钢帘线3+2×0.30NT进行比较试验，试 验结果见表3，实施例3与对照组E相比均可以在橡胶硫化时达到全渗胶的效果，而实施例3有更好的抗疲劳性能。
实施例4
本实施例中的钢帘线包括四个芯部钢丝和三个外层钢丝。芯部钢丝的直径为0.35mm，外层钢丝的横截面的长轴尺寸为0.37mm，短轴尺寸为0.32mm，弧边半径为0.18mm。外层钢丝上沿直线延伸的壁与芯部钢丝构成线接触式的扭绞啮合形成直径为1.17mm的钢帘线。
本实施例中的钢帘线与现有技术中的钢帘线4+3×0.35ST进行比较试验，试验结果见表3，实施例4与对照组E相比均可以在橡胶硫化时达到全渗胶的效果，而实施例4有更好的抗疲劳性能。
表3
Figure PCTCN2017107592-appb-000003
实施例5
本实施例中的钢帘线包括二个芯部钢丝和三个外层钢丝。芯部钢丝的直径为0.30mm，外层钢丝的横截面的长轴尺寸为0.40mm，短轴尺寸为0.20mm，弧边半径为0.10mm。外层钢丝上沿直线延伸的壁与芯部钢丝构成线接触式的扭绞啮合 形成直径为0.85mm的钢帘线。
从表4可以看出，本实施例中的钢帘线与对照组G相比在硫化条件下有更好的空气保持率，本实施例中的钢帘线可以在橡胶硫化时达到全渗胶的效果。本实施例中的钢帘线与对照组H相比有更好的抗疲劳性能。
表4
Figure PCTCN2017107592-appb-000004
通过上述方式得到的钢帘线可以广泛应用于轮胎、传送带或胶管等橡胶制品的制造中。以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变形，这些改进和变形也应视为本发明的保护范围。

Claims (13)

  1. 一种用于加强橡胶制品的钢帘线，包括：芯部钢丝和外层钢丝；其特征在于：所述芯部钢丝为圆形钢丝，所述外层钢丝为扁平形钢丝，其横截面具有一对平行的直边和一对对称的弧边；所述芯部钢丝的数目为二至四个并以互为平行的形式排列，所述外层钢丝的数目为一至四个；所述外层钢丝的数目为一个时，其以螺旋形式捻合于所述芯部钢丝上；所述外层钢丝的数目为二至四个时，其以互为平行的螺旋形式捻合于所述芯部钢丝上；所述外层钢丝上直边所在的壁与所述芯部钢丝的外壁之间为线接触捻合。
  2. 根据权利要求1所述的一种用于加强橡胶制品的钢帘线，其特征在于：所述外层钢丝的横截面具有平行于直边的长轴和垂直于直边的短轴；所述长轴的尺寸与所述短轴的尺寸的比值Rax为1＜Rax≤2。
  3. 根据权利要求2所述的一种用于加强橡胶制品的钢帘线，其特征在于：所述长轴的尺寸与所述短轴的尺寸的比值Rax为1.2≤Rax≤1.8。
  4. 根据权利要求2或3所述的一种用于加强橡胶制品的钢帘线，其特征在于：所述长轴的尺寸为0.1～0.6mm。
  5. 根据权利要求4所述的一种用于加强橡胶制品的钢帘线，其特征在于：所述长轴的尺寸为0.2～0.45mm。
  6. 根据权利要求1至3任一所述的一种用于加强橡胶制品的钢帘线，其特征在于：所述芯部钢丝的直径为0.1～0.6mm。
  7. 根据权利要求6所述的一种用于加强橡胶制品的钢帘线，其 特征在于：所述芯部钢丝的直径为0.2～0.4mm。
  8. 根据权利要求1至3任一所述的一种用于加强橡胶制品的钢帘线，其特征在于：所述芯部钢丝的数目为二或三个。
  9. 根据权利要求1至3任一所述的一种用于加强橡胶制品的钢帘线，其特征在于：所述外层钢丝的数目为一或二个。
  10. 根据权利要求1所述的一种用于加强橡胶制品的钢帘线，其特征在于：所述芯部钢丝和所述外层钢丝的碳含量不低于0.6％。
  11. 根据权利要求1所述的一种用于加强橡胶制品的钢帘线，其特征在于：所述芯部钢丝和所述外层钢丝的表面具有促橡胶粘合层。
  12. 一种橡胶制品，包括钢帘线，其特征在于：所述钢帘线为权利要求1所述的钢帘线。
  13. 根据权利要求12所述的橡胶制品，其特征在于：所述橡胶制品为轮胎、传送带或胶管。
PCT/CN2017/107592 2017-10-23 2017-10-25 一种用于加强橡胶制品的钢帘线及其橡胶制品 WO2019079989A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710990282.8 2017-10-23
CN201710990282.8A CN107630375A (zh) 2017-10-23 2017-10-23 一种用于加强橡胶制品的钢帘线及其橡胶制品

Publications (1)

Publication Number Publication Date
WO2019079989A1 true WO2019079989A1 (zh) 2019-05-02

Family

ID=61105660

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/107592 WO2019079989A1 (zh) 2017-10-23 2017-10-25 一种用于加强橡胶制品的钢帘线及其橡胶制品

Country Status (2)

Country Link
CN (1) CN107630375A (zh)
WO (1) WO2019079989A1 (zh)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3317712A1 (de) * 1983-05-16 1984-11-29 Akzo Gmbh, 5600 Wuppertal Verstaerkungscord zur verstaerkung von elastomeren erzeugnissen
EP0264071A2 (de) * 1986-10-16 1988-04-20 Akzo N.V. Luftreifen mit Flachcorden
JPH05124402A (ja) * 1991-11-05 1993-05-21 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ
CN1276451A (zh) * 1999-06-03 2000-12-13 弘德钢丝绳株式会社 橡胶制品用的加强钢丝绳以及该钢丝绳的制造方法和装置
CN1311835A (zh) * 1999-05-24 2001-09-05 东京制纲株式会社 单线钢丝绳及其制造方法
JP3276612B2 (ja) * 1999-03-19 2002-04-22 東京製綱株式会社 スチールコード及びラジアルタイヤ
CN102292222A (zh) * 2009-01-28 2011-12-21 贝卡尔特公司 用作椭圆形绳芯部的弯皱且扁平的金属线
CN103597138A (zh) * 2011-06-10 2014-02-19 贝卡尔特公司 包括扁平钢丝的钢丝帘线

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212846C2 (de) * 1992-04-16 1997-08-14 Sp Reifenwerke Gmbh Verstärkungscord für elastomere Erzeugnisse
EP2475818B1 (en) * 2009-09-11 2014-07-30 NV Bekaert SA Oval steel cord of the m+n structure comprising at least one oval core wire
JP6323135B2 (ja) * 2014-04-15 2018-05-16 横浜ゴム株式会社 建設車両用空気入りタイヤ
KR101647091B1 (ko) * 2014-10-14 2016-08-09 홍덕산업 주식회사 타이어 보강용 스틸코드

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3317712A1 (de) * 1983-05-16 1984-11-29 Akzo Gmbh, 5600 Wuppertal Verstaerkungscord zur verstaerkung von elastomeren erzeugnissen
EP0264071A2 (de) * 1986-10-16 1988-04-20 Akzo N.V. Luftreifen mit Flachcorden
JPH05124402A (ja) * 1991-11-05 1993-05-21 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ
JP3276612B2 (ja) * 1999-03-19 2002-04-22 東京製綱株式会社 スチールコード及びラジアルタイヤ
CN1311835A (zh) * 1999-05-24 2001-09-05 东京制纲株式会社 单线钢丝绳及其制造方法
CN1276451A (zh) * 1999-06-03 2000-12-13 弘德钢丝绳株式会社 橡胶制品用的加强钢丝绳以及该钢丝绳的制造方法和装置
CN102292222A (zh) * 2009-01-28 2011-12-21 贝卡尔特公司 用作椭圆形绳芯部的弯皱且扁平的金属线
CN103597138A (zh) * 2011-06-10 2014-02-19 贝卡尔特公司 包括扁平钢丝的钢丝帘线

Also Published As

Publication number Publication date
CN107630375A (zh) 2018-01-26

Similar Documents

Publication Publication Date Title
WO2015158103A1 (zh) 一种输送带用钢丝绳
EP2475818B1 (en) Oval steel cord of the m+n structure comprising at least one oval core wire
JP5883898B2 (ja) タイヤ補強用スチールコードおよびこれを適用したラジアルタイヤ
JPH02133687A (ja) 補強用スチールコード
KR102371508B1 (ko) 고무 제품 보강용 m+n 스틸 코드
CN107442596B (zh) 一种钢帘线生产方法
JP2772627B2 (ja) ゴム補強用超高強度スチールワイヤおよびスチールコード
JP2013104154A (ja) ブラスめっき鋼線の製造方法およびブラスめっき鋼線
CN212713929U (zh) 钢帘线和轮胎
CN211921804U (zh) 钢帘线和轮胎
WO2021223463A1 (zh) 一种钢帘线、其制造方法及轮胎
WO2019079989A1 (zh) 一种用于加强橡胶制品的钢帘线及其橡胶制品
CN109518500A (zh) 一种镀镍钢丝绳及其生产工艺
JPH1181168A (ja) ゴム物品補強用スチ−ルコ−ド及び空気入りラジアルタイヤ
EP2718495A1 (en) A steel cord comprising flat wires
CN111005112B (zh) 用于橡胶增强的钢帘线
CN210151471U (zh) 钢帘线以及轮胎
WO2022178930A1 (zh) 一种单丝钢帘线的制造方法及钢丝应力消除装置
WO2022047714A1 (en) A steel cord for rubber reinforcement
WO2020054673A1 (ja) ゴム物品補強用スチールコード
KR100267278B1 (ko) 타이어 비드부 보강용 인덴티드 강선
CN108755208A (zh) 一种巨高强度的钢帘线结构及其制备方法
US20240075772A1 (en) A steel cord for rubber reinforcement
CN109181022B (zh) 一种橡胶软管制备方法
JP2023554494A (ja) ゴム補強用スチールコード

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17929673

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17929673

Country of ref document: EP

Kind code of ref document: A1