JPS5933684B2 - Traveler for spinning machine - Google Patents

Description

[Detailed description of the invention] The present invention relates to the structure of a traveler for a spinning machine.

Conventional travelers used in spinning machines, twisting machines, etc. rotate and slide at high speed on the flange surface of the ring, which causes large wear, so hard steel wire with a carbon content of 0.4 to 0.8 is used. After forming into the shape of
A layer of tuftride or the like is formed to improve wear resistance.

However, the plated traveler has better corrosion and wear resistance than a non-plated traveler.

However, the film hardness of nickel plating is 200 to 300H.
The durability of the coating is short under harsh conditions of use, and once the coating has disappeared, the surface becomes rough due to direct contact with the substrate, causing rapid wear and damage to the ring. However, it has the disadvantage of causing yarn breakage and an increase in yarn fuzz.

In addition, in the case of a plating film made of hard metal such as chrome, the hardness of the film is as high as 800 HV or more, and the wear resistance is improved to some extent, but the drawback is that it has poor adhesion to the base material, reducing the toughness of the traveler and making it more likely to break. There is.

The present invention eliminates such drawbacks by plating tin metal on at least the portion of the metal traveler that contacts the ring flange, and heating the metal traveler in an oxidizing atmosphere to permeate and diffuse tin from the surface of the base material to the inside. A soft tin film is left on the permeation diffusion layer, and a Fe5n-C ternary alloy layer is formed as the permeation diffusion layer to provide a traveler for a spinning machine that has good conformability to the ring and high wear resistance.

The present invention will be explained below with reference to Examples.

A hard steel wire rod with a carbon content of o, s% is formed into a traveler 1 shown in FIG.

After applying tin plating to a thickness of about 20μ on at least the surface of the base material that contacts the ring flange of this traveler,
Heat treatment is performed for 1 hour in a non-oxidizing atmosphere at 0°C to allow tin to permeate and diffuse from the surface of the base material, and then quenching and tempering are performed to leave a soft tin coating 3 on the sliding contact area with the ring from the surface of the base material. Fe Sn C where the surface layer is rich in tin metal toward the inside, and the concentration of tin diffusion decreases toward the inner layer.
The tin permeation diffusion layer 2 is transformed into a three-component alloy of the system.

This tin permeation diffusion layer 2 was constructed as shown in the X-Y cross-sectional view of FIG. 1 (A), ie, as shown in FIG. 2 (A) and FIG.

Further, the tin permeation diffusion layer can be easily formed on the entire surface of the traveler or the entire inner surface that is fused with the ring.

A comparison test of the amount of wear was conducted between the above traveler and a conventional Fe-C type traveler which had been carburized, quenched and tempered under the following test conditions, and the results shown in FIG. 3 were obtained.

(A indicates the product of the present invention, B indicates the conventional product.

)Test conditions Fiber/count: Tetron/cotton blend yarn 40'S ring: Inner diameter 47mmφ, flange width 3.35 (carburized steel) Traveler: Weight 0.0324g/Kes Spindle rotation: 15.00Or, p, m Test time :
30 hours As described above, the structure of the present invention has extremely high wear resistance compared to conventional products, and the tin that has penetrated and diffused into the base material is Fe-8n.
- It forms a C-based alloy layer, which is transformed into a three-component compound through chemical bonding, so its strength is greatly improved compared to conventional plating films.Moreover, the surface layer forms a soft metal tin film. Because of this, the ring flange surface has excellent initial conformability when sliding, allowing the traveler to run smoothly.

In addition, even when the tin coating peels off, the hard Fe5n-C alloy layer that has penetrated and diffused prevents damage such as peeling and abrasion, and the wear of the traveler is extremely low because it has excellent resistance to softening due to frictional heat. It is a tube that can be used for a long time and has various effects.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 each show an embodiment of the present invention.
Figure A is a front view of the horizontal traveler, the opening of the same figure is a front view of the vertical traveler, Figure 2 A and the opening are cross-sectional views taken along the X-Y line of Figure 1 A, and Figures 2 C and 2 are views of Figure 1. FIG. 3 is a sectional view taken along the X-Y line of the mouth, and is an explanatory diagram showing a comparison of the amount of wear between the product of the present invention and the conventional product. 1... Traveler, 2... Tin permeation diffusion layer, 3... Tin coating, A... Product of the present invention, B
...Conventional product.

Claims (1)

[Claims] 1. The metal traveler has a tin coating on the surface of the base material at least in the part that contacts the ring flange, and forms a tin permeation diffusion layer that is transformed into an Fe-8n-C alloy layer from the surface of the base material toward the inside. A traveler for spinning machines characterized by: