CN2432238Y - Steel cable - Google Patents

Abstract

The utility model relates to a steel curtain thread, which is formed by knitting and twisting steel wire threads, wherein, the cross section of each steel wire thread forms a circle shape; the steel wire threads are twisted by a thick core thread and eighteen thin steel wire threads in the same direction; the twisting direction is the Z direction to form an orthohexagonal cross section. Because the utility model adopts a density type structure, the utility model has the advantages of good fatigue resistance and corrosion resistance performance, and small weight occupation ratio for tyres, and furthermore, the utility model reduces the production cost of the tyres and can be used as the steel curtain thread in inflation tyres.

Description

A kind of steel cord

The utility model relates to a kind of as the intensive shaped steel cord of using in the pneumatic tire, particularly relate to by keeping or improve the performance of steel cord, reduce required steel cord simultaneously, thereby can reduce the weight of tire, and the tire that can reduce production costs steel cord.

Though refining of metal and drawing technique have had significant progress at present, the higher carbon steel of phosphorus content is not used for tire yet, therefore is difficult to reduce the weight of required steel cord in the tire, perhaps improves the performance of tire.

The purpose of this utility model provides a kind of endurance, corrosion resistance and good, accounts for tire weight than little steel cord.

For achieving the above object, a kind of steel cord of the utility model is compiled to twist with the fingers by wire and is formed, and the cross section of wire be circular, and it does twist-on-twist by 19 wires, twists with the fingers to being Z to, the cross section of formation orthohexagonal.

A kind of steel cord of the utility model, the diameter of center wire is greater than the diameter of other root wire.

Because be the line contact between the wire of steel cord, contact area is bigger, so its fatigue durability and decay resistance improve thereupon.It has structure closely, and cord diameter can reduce, and can keep identical humidification simultaneously, can reduce the weight of steel cord in the tire, reduces the tire production cost.It is an one-step shaping, and therefore the production cost of this steel cord can significantly reduce, and increases economic efficiency.

The utility model is further described below in conjunction with the drawings and specific embodiments.

Fig. 1 is the structural representation of a kind of steel cord of the utility model

According to shown in Figure 1, a kind of steel cord of the utility model, be to form do twist-on-twist by a thicker wire and peripheral 18 thinner wires, its cross section is an orthohexagonal, the center is a wire that diameter is 0.30mm, the intermediate layer is that six roots of sensation diameter is the 0.25mm wire, and outermost layer is 12 wires that diameter is 0.25mm.The sth. made by twisting of steel cord to be Z to, the lay pitch is 14mm, forming not too between wire and the wire, the line of standard contacts.

Claims (2)

1, a kind of steel cord compile to be twisted with the fingers by wire and to be formed, and the cross section of wire be circular, it is characterized in that it does twist-on-twist by 19 wires, twists with the fingers to being Z to, the cross section of formation orthohexagonal.

2, a kind of steel cord according to claim 1 is characterized in that the diameter of the diameter of center wire greater than other root wire.

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