JPS616320A - Metallic wire for spinning machine - Google Patents

Abstract

PURPOSE:The titled wires, obtained by forming a nitride layer on the surface of tooth parts, etc. of metallic wires consisting of hard steel wires, etc. by the chemical vapor deposition (CVD) or physical vapor deposition (PVD) method, and having high toughness and remarkably improved abrasion and corrosion resistance. CONSTITUTION:Metallic wires for spinning machines obtained by forming teeth 2 on carding taker-in wires, etc., consisting of hard steel wires or alloy steel wires, and having an edge part 1 by blanking, winding the resultant taker-in wires around a roll, subjecting the resultant roll to glow discharge in a reactive gas atmosphere consisting essentially of N2 or NH3 under 1-5X10<-2>Torr pressure and ion plating the wires to form a nitride layer 3, e.g. titanium nitride, having usually 1-20mu thickness on the surface of the teeth 2 of the wires, if necessary hardening only the tooth parts 2, and grinding the surface thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a metallic wire for spinning machines, which has good abrasion resistance and corrosion resistance and is used in carding machines, air spinning machines, etc. of spinning machines.

Conventional technology Conventional metallic wire for spinning machines generally uses hard steel wire or alloy steel wire.The tips of the teeth of the metallic wire interact with the fibers and wear out, so conventionally they are processed to a high degree of hardness using methods such as heat treatment. There is.

However, the harsh operating conditions in today's textile mills require even higher wear resistance, which is why some use special wear-resistant steels to achieve higher hardness. However, there are disadvantages in that the toughness of the teeth is reduced, the teeth are easily chipped, and it is difficult to wrap the metallic wire around the roller.

Furthermore, as shown in FIGS. 5 and 6, there is a device in which a highly wear-resistant layer is provided by thermally spraying an ultra-hard metal on the side surface of the tooth portion.

In this case, the hardness of the wear-resistant layer is high, but the surface roughness is rough, and the fibers concentrate in the recesses on the surface, causing the fibers to be cut or
It has the disadvantage of accelerating wear of the metallic wire.

Furthermore, when spinning flame-retardant fibers, there is a drawback that the metallic wire rusts, making spinning impossible.

Means for Solving the Problems The present invention eliminates the drawbacks of the conventional metallic wires for spinning machines, and uses the KOVD method or P''/D method to produce metallic wires for spinning machines formed from hard steel wires or alloy steel wires. Tit on at least the tooth surface of the metallic wire.
(, ZrW, NbN.

The object of the present invention is to provide a metallic wire for a spinning machine that has a nitride layer such as TaN+BN and contributes to improved wear resistance and corrosion resistance.

An embodiment of the present invention will be described below based on gold drawings.

Embodiment FIGS. 1 and 2 show a take-in wire used in a carding machine according to an embodiment of the present invention.

A wire having a hard steel wire having an edge of υ is punched to form teeth 2t as shown in FIG. 1, and then wound around a desired roll in a solid or grooved manner.

Wrap the above-mentioned take-in wire around the roll, 1~5X]
By performing glow discharge in a reactive gas atmosphere mainly composed of N or NH at 0.0 Torr and performing ion blating treatment, the surface of at least the teeth 2 of the Tekaino wire is coated with a thickness of 1 to 1. The metallic wire for a spinning machine of the present invention is constructed by forming a titanium nitride layer 8 with a thickness of 20 μm, and then hardening only the tooth portions and then surface polishing.

Further, after the treatment, only surface polishing is sometimes performed without quenching, but in order to further extend the life, it is better to perform quenching. Further, the treatment layer of the titanium nitride layer 3 can be applied to the upper surface of the tooth portion 9 and the edge by the above method, but it is also possible to treat only the tooth portion by performing a masking treatment before treatment. .

The Tekine wire A of the present invention has the structure as described above, and its cross-sectional hardness distribution curve is shown in FIG. 8, and the surface hardness is Hz 250 to 8000. B has very high hardness.

Next, a practical example in which the Tekine wire of the present invention was attached to a carding machine and spun is shown below.

Spinning conditions Fiber: Polyester 1.5 d x 88 cylinder rotation speed: 880 r, p, m cylinder rotation speed: 82
r, p, m spinning speed: 950 r, p, m spinning gel:
To 820/aya Tekine's lifespan Ordinary product: 2 to 3 months Super hard alloy coated wire; 6 months Wire of the present invention = 15 months The Tekine wire of the present invention has a lifespan of more than 1.5 times that of a normal product. 2.5 compared to super hard alloy wave + i wire
It has doubled its lifespan.

Embodiment 2 A combing wire for an air spinning machine according to another embodiment of the present invention is shown in FIG.

The high carbon steel wire rod is formed into a combing wire of the desired shape shown in Fig. 4, and after being wound around a roll, 1 to 5 x 10
By performing glow discharge in a reactive gas atmosphere mainly composed of N, l) or NHs at Torr and performing ion blating treatment, a nitrided layer with a thickness of 10 μm is formed on at least the tooth surface of the Tekine wire. A titanium layer of 8tl is formed, and then only the tooth portions are hardened and surface polished to form the combing wire of the present invention.

When the combing wire with the above configuration was wound around a combing roller and spun, the lifespan was more than five times that of conventional high carbon steel wire rods, and more than twice as long as that of cemented carbide coated wires.

In addition, the metallic wire of the present invention is Tekine wire,
Used for metallic wires for spinning machines for various purposes such as combing wires and cylinder wires. In addition, T111/,
PV such as vacuum evaporation, sputtering, etc. to form nitride layers such as ZrM, NbN, TaF/, BN, etc.
D method or OVD method may be used.

Effects of the Invention The metallic wire for spinning machines of the present invention is made of a metallic wire for spinning machines made of hard steel wire or alloy steel wire, and a nitride layer with good adhesion to the base material is formed on at least the surface of the teeth. Therefore, it has high toughness and significantly improves wear resistance. Furthermore, since the surface is smooth, the phenomenon of local wear caused by conventional thermal spraying of ultra-hard metals does not occur, and the invention has excellent effects such as high corrosion resistance and significantly extended life.

[Brief explanation of drawings]

@ Figure 1 shows a metallic wire for a spinning machine according to one embodiment of the present invention, (N is a front view, (El is a side view, Figure 2 is a YY cross-sectional view of Figure 1, and Figure 8 is a cross-sectional view of the invention). FIG. 4 is a cross-sectional hardness distribution curve diagram showing a comparison between metallic wire for spinning machines and conventional metallic wire, and FIG. 4 shows another embodiment of the present invention.
) is a front view, (l is a side view, Fig. 5 shows a conventional metallic wire for spinning machines, (4) is a front view, (to) is a side view, and Fig. 6 is a cross section taken along the line X-x in Fig. 6. Fig. 1. Edge 2. Teeth.

Claims (1)

[Claims] A metallic wire for spinning machines made of hard steel wire or alloy steel wire is coated with CVD or PV on the surface of at least the teeth.
A metallic wire for a spinning machine, characterized in that a nitride layer is formed by the D method.