JPS5817299B2 - 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.

Conventionally, travelers used in spinning machines, yarn twisting machines, etc. rotate and slide on the flange surface of the ring at high speed, which causes a lot of wear, so hard steel wire with a carbon content of 0.4 to 0.8% is used. After forming into a predetermined shape, heat treatment such as quenching and tempering is performed, or a layer of nickel plating, hard chrome plating, tuftride, etc. is formed on the surface after heat treatment to provide wear resistance.

However, the film hardness of nickel plating is 200 to 300H.
The coating has a very low V value, and the durability of the coating is short under harsh usage conditions, 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. This 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 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 at least the portion of the metal traveler that contacts the ring flange with a nickel-phosphorus alloy and further plating with nickel.

This is heated to austenite in a non-oxidizing atmosphere, then oil quenched and tempered.

At the time of austenitization, the nickel coating and the nickel-phosphorus alloy coating are diffused and fused, and at the same time, the nickel-phosphorous alloy coating diffuses into the base material, improving the adhesion of the plating film to the base material and providing a good bond to the ring. The present invention provides a traveler for a spinning machine that has high conformability and wear resistance.

Embodiments of the present invention will be described below with reference to the drawings.

A hard steel wire rod with a carbon content of 0.8% is used to form a traveler 1 shown in FIG. 1 or 2 using a traveler forming machine.

A nickel-phosphorus alloy coating with a thickness of about 10 μm is applied to at least the surface of the base material in contact with the ring flange of this traveler, and nickel plating is further applied to the same thickness on top of the nickel-phosphorus alloy coating.

This is heated to austenite in a non-oxidizing atmosphere at about 800°C, and then subjected to oil quenching and tempering treatments.

At the time of austenitization, the nickel plating film and the nickel-phosphorus alloy plating film soften, diffuse, and fuse to form a composite film 2 of nickel and nickel-phosphorus alloy, and at the same time, the nickel-phosphorus alloy plating film diffuses into the base material. A nickel/phosphorus permeation diffusion layer 3 is formed.

3 is a sectional view taken along the line X-Y in FIG. 1, and FIG. 4 is a sectional view of another embodiment.

FIG. 5 is a sectional view taken along the line X-Y in FIG. 2, and FIG. 6 is a sectional view of another embodiment.

The diffusion fusion layer of the nano-nickel coating and the nickel-phosphorous alloy coating and the nickel-phosphorus permeation diffusion layer can be easily formed on the entire surface of the traveler or the entire inner surface that contacts the ring.

A comparative test of the amount of wear was carried out on the traveler of the present invention and a conventional traveler made of hard steel wire which had been quenched and tempered and then nickel plated under the following test conditions, and the results shown in FIG. 7 were obtained.

(A is a product of the present invention, B is a conventional product) Test conditions Fiber/count: Polyester/cotton blend yarn 45'S ring:
Carburized steel inner diameter 47%φ, flange width 3.35 Traveler: weight 0.0324 g/kespindle rotation = 1500 Or-p-m Test time: 30 hours As shown in Figure 7, the traveler of the present invention is different from the conventional nickel plated The nickel-phosphorus alloy layer, which has been penetrated and diffused into the substrate, has extremely high wear resistance compared to the conventional plating film, which adheres to the substrate only by physical bonding force. A nickel-phosphorus alloy plating layer is interposed between the nickel plating film, which fuses into a composite layer, and diffuses into the base material, creating not only physical bonding but also chemical bonding force, resulting in a large width. The adhesion of the film is strengthened.

That is, the above characteristics are 11 in the nickel-phosphorus binary phase diagram.
A eutectic point with a melting point of approximately 880° C. is observed at a phosphorus component of about % by weight, and it is obtained by utilizing the property of having a high diffusion rate relative to iron, steel, etc.

Therefore, according to the present invention, since the surface layer forms a composite film of soft metal nickel and nickel/phosphorus, it has excellent initial conformability when the ring flange surface slides, and the traveler runs smoothly. Even when the composite coating of nickel and phosphorus peels off, damage such as peeling and abrasion can be minimized by the permeated and diffused nickel-phosphorus alloy layer, resulting in very little wear on the traveler (which means that the tube can be used for a long time). It has various effects.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 each show an embodiment of the present invention.
The figure is a front view of the horizontal traveler, Figure 2 is a front view of the vertical traveler, Figure 3 is a cross-sectional view along the X-Y line in Figure 1, and Figure 4 is a front view of the vertical traveler.
The figure is a sectional view showing another embodiment along the line X-Y in FIG.
Figure 5 is a sectional view taken along the X-Y line in Figure 2, and Figure 6 is a cross-sectional view of the
FIG. 7 is a sectional view showing another embodiment along the line X-Y in the figure, 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... Composite film of nickel and nickel-phosphorus alloy, 3... Nickel and phosphorus permeation diffusion layer, A... Present invention Goods, B...
...Conventional product.

Claims (1)

[Claims] 1. A composite coating of nickel and a nickel-phosphorus alloy is provided on the base surface of at least the part of the metal traveler that contacts the ring flange, and a nickel-phosphorus permeation diffusion layer is formed from the base surface inward. Features a traveler for spinning machines.