CN2755153Y

CN2755153Y - Steel curtain wire

Info

Publication number: CN2755153Y
Application number: CNU2004200543442U
Authority: CN
Inventors: 刘锦兰; 李其星
Original assignee: Jiangsu Xingda Steel Tyre Cord Co Ltd
Current assignee: Jiangsu Xingda Steel Tyre Cord Co Ltd
Priority date: 2004-12-07
Filing date: 2004-12-07
Publication date: 2006-02-01
Anticipated expiration: 2014-12-07

Abstract

The utility model discloses a steel cord which is used for pneumatic tires. The utility model is formed by braiding and twisting strands of steel wire of which the cross section is circular, and the utility model is divided into two layers, namely, an inner layer and an outer layer, wherein the inner layer is a strand of inner layer braided wire of which the cross section is circular too, and is formed by braiding and twisting seven steel wire strands, and furthermore, the steel strands which are formed by braiding and twisting seven strands of monofilament is a strand of braided wire with a circular cross section. In addition, the outer layer which is a strand of monofilament is sheathed and twisted on the outer surface of the inner layer braided wire, and the steel wire strands, the inner layer braided wire and the steel cord orderly take the direction of an ordinary lay method as the direction of twist. The steel cord has the characteristics of high bearing capacity and good corrosion resisting property.

Description

A kind of steel cord

Technical field

The utility model relates to a kind of as the steel cord of carcass in the pneumatic tire.

Background technology

Along with social progress, large-scale load-carrying vehicle arises at the historic moment, require the radial heavy duty tire carcass to have the respective carrier ability, this is to as having higher requirement with the production of steel cord in the pneumatic tire, though refining of metal and drawing technique have had significant progress, the higher carbon steel of phosphorus content is not widely used in the tire yet.Therefore, be difficult to reduce the weight of required steel cord in the tire, and can improve the performance of tire.

Summary of the invention

The purpose of this utility model provides the steel cord of a kind of bearing capacity height, corrosion resistance and good.

For achieving the above object, a kind of steel cord of the utility model is compiled sth. made by twisting by steel wire and is formed, and the cross section of steel wire is a garden shape, and it is divided into inside and outside two-layer; Described internal layer is compiled by 7 strands of steel strands (1) and is twisted with the fingers into the internal layer strand that the cross section is a garden shape, and steel strand is that the cross section that is formed by 7 monofilament volume sth. made by twisting is the strand of garden shape; Described skin is a monofilament, and its bag is twisted with the fingers the outer surface at the internal layer strand; Steel strand, internal layer strand, steel cord three's sth. made by twisting is to being followed successively by ordinary lay.

The diameter of described outer monofilament is less than the diameter of internal layer strand monofilament, between the monofilament, be the line contact between the strand.

Described internal layer strand filament diameter is 0.25mm, and outer filament diameter is 0.15mm, and the lay pitch of steel strand is 12.5mm, and the lay pitch of internal layer strand is 20.0mm, and the lay pitch of steel cord is 5.0mm.

A kind of steel cord of the utility model, it is compiled to twist with the fingers by 50 steel wires and forms the bearing capacity height; Steel wire thigh, internal layer strand, steel cord three's sth. made by twisting is to being followed successively by ordinary lay simultaneously, and there is the space inside of cord, is convenient to the infiltration of rubber, has improved the decay resistance of cord.

Description of drawings

Fig. 1 is the cross section structure schematic diagram of a kind of steel cord of the utility model embodiment.

Fig. 2 is the cross section structure schematic diagram of steel strand among a kind of steel cord of the utility model embodiment.

Sequence number is among the figure: 1, steel strand

The specific embodiment

Below in conjunction with accompanying drawing the utility model specific embodiment is described in further detail.

With reference to the accompanying drawings, a kind of steel cord of the utility model is compiled to twist with the fingers by steel wire and is formed, and the cross section of steel wire is a garden shape, and it is divided into inside and outside two-layer; Described internal layer is compiled by 7 strands of steel strands 1 and is twisted with the fingers into the internal layer strand that the cross section is a garden shape, steel strand 1 is that the cross section that is formed by the monofilament volume sth. made by twisting that 7 diameters are 0.25mm is the strand of garden shape, the sth. made by twisting of steel strand to be S to, the lay pitch is 12.5mm, the sth. made by twisting of internal layer strand to be Z to, the lay pitch is 20.0mm, is line between monofilament and monofilament, steel strand 1 and the steel strand 1 and contacts; Described skin is a monofilament that diameter is 0.15mm, and bag is twisted with the fingers the outer surface at the internal layer strand, the sth. made by twisting of steel cord to be S to, the lay pitch is 5.0mm.

Claims

1, a kind of steel cord is compiled sth. made by twisting by steel wire and is formed, and the cross section of steel wire is circular, and it is characterized in that: it is divided into inside and outside two-layer; Described internal layer is compiled by 7 strands of steel strands (1) and is twisted with the fingers into the internal layer strand that the cross section is a circle, and steel strand (1) is to be compiled by 7 monofilament to twist with the fingers the strand that the cross section that forms is a circle; Described skin is a monofilament, and its bag is twisted with the fingers the outer surface at the internal layer strand; Steel strand (1), internal layer strand, steel cord three's sth. made by twisting is to being followed successively by ordinary lay.

2, a kind of steel cord according to claim 1 is characterized in that: the diameter of described outer monofilament is less than the diameter of internal layer strand monofilament, between the monofilament, be the line contact between the strand.

3, a kind of wire according to claim 1 and 2, it is characterized in that: described internal layer strand filament diameter is 0.25mm, and outer filament diameter is 0.15mm, and the lay pitch of steel strand (1) is 12.5mm, the lay pitch of internal layer strand is 20.0mm, and the lay pitch of steel cord is 5.0mm.