JPS6137999A - Ring for spinning machine - Google Patents

Abstract

PURPOSE:To improve the wear resistance of a ring by forming a composite plated Ni layer contg. prescribed hard and fine particles on the surface of the flange of the ring contacting with a traveler. CONSTITUTION:In order to improve the wear resistance of a ring for a spinning machine, a composite plated layer is formed on the surface of the flange of the ring contacting with a traveler. The composite plated layer consists of an electroplated Ni layer 2 formed on the base metal 1 and a composite plated hard layer 3 formed on the layer 2 and contg. hard and fine particles 4 deposited in an Ni alloy as the matrix. The Ni alloy is an Ni-W-P alloy, an Ni-Co-P alloy or an Ni-P alloy.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a ring for a spinning machine that exhibits excellent performance in high-speed spinning.

(Prior Art and its Problems) Conventional rings for spinning machines are generally formed using low carbon steel, and are subjected to carburizing and quenching treatment as surface hardening treatment. However, in the above ring, the spindle rotation speed is 20.0.
0 Or, p, m, or more (current high speed rotation is 15.
OOOr, p, m, ~16.00Or, p, m,
) had the disadvantage that due to the increased frictional resistance between the ring and the traveler and the rapid rise in frictional heat, the trapeller would seize early and fly off, making continuous operation impossible.

An object of the present invention is to provide a traveler for a spinning machine that solves the above problems.

(Means for Solving Problems) The present invention involves cutting low carbon steel as a raw material, forming a ring into a desired shape, heat-treating the ring, subjecting the surface to polishing, and then electroplating the surface. α5μ
A nickel plating film of ~1μ is formed, and a hard composite plating layer is further formed on the nickel plating film with hard fine particles of 0.2μ to 3μ as a eutectoid material and a nickel alloy containing nickel and phosphorus as a matrix. , formed to have a thickness of 5μ to 15μ, and then heated at 350°C to 48°C.
Heat treatment at a temperature of 0°C for 50 to 150 minutes
), the upper composite plating layer has stronger adhesion with the silling surface due to the presence of the lower nickel plating layer, and furthermore, due to the crystallization of the nickel alloy matrix,
The adhesion between the hard particles and the matrix is also strengthened,
A spinning machine ring with high hardness and good wear resistance.

By the way, the above plating layer is a nickel plating layer formed on the entire surface of the ring, and a composite plating layer is formed on the entire surface of this layer or at least on the contact surface with the traveler, or a composite plating layer is formed on the entire surface of this layer or at least on the contact surface with the traveler. A nickel plating layer is formed, and a composite plating layer is formed on the surface of the bracket layer.

the above? ) Nickel alloys used as nickel are nickel-phosphorus alloy, nickel-tungsten-phosphorus alloy,
There is a nickel-cobalt-phosphorus alloy. Examples of hard particles include silicon carbide, tungsten carbide, titanium carbide, boron carbide, chromium carbide, aluminum oxide, diamond, fine metal powder, ceramic, and silicon nitride.

Also, the thickness of the nickel plating film as the base layer was set to 0.
The thickness was set to 5μ to 1μ, but if it is less than 0.5μ, the adhesion between the hard composite plating layer and the ring surface is poor, and when the ring is used at high speed, the hard composite plating layer will peel off early. Also, the upper limit was set at 1μ because a thickness of 1μ is sufficient to achieve the desired purpose;
This is because it also increases costs. Furthermore, if the size of the hard fine particles exceeds 3μ, the plating layer will fall off quickly, whereas if the size is less than 0.2μ, the wear resistance will be poor.

Furthermore, the thickness of the hard composite plating layer was set to 5μ to 15μ, but if it is less than 5μ, it will fail quickly and the wear resistance will be insufficient, and if it is more than 15μ, the plating will become rough and cause cracks. However, the disadvantages are that the processing time is extremely long and the cost is increased.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

As shown in FIG. 1, a cylindrical S 150 K material is cut into a desired ring shape, carburized and quenched, and surface treated to form a ring (1). By electrolytic nickel plating on the surface of the ring (1), a nickel plating layer (2) of about 1 μm is provided as shown in FIG.

A ring (1) having the above nickel plating layer (2),
Bath composition is nickel sulfate 24#/III sodium hypophosphite 21t/IL lactic acid
30f/necessary propionic acid 2
m1VIlr Lead nitrate Q, 000
1t/required, plating conditions are bath temperature 90℃, bath pH 4,
Electroless composite plating was performed while stirring or rotating the ring (1) while adding 2 fl& of 0.4μ silicon carbide as hard particles. As a result, a composite plating layer (3) in which silicon carbide (4) was eutectoided in a nickel matrix was formed on the surface of the nickel plating layer 2 of the ring (υ).Furthermore, after performing the above composite plating, By heating at about 400℃ for about 1 hour in a heat treatment furnace, the electroless nickel plating film becomes crystallized by the crystallization of the nickel alloy.
As shown in FIG. 3, high hardness of Hvloooo could be obtained, and the adhesion of silicon carbide was strengthened by crystallization of nickel-phosphorus.

The hard particles contained in the composite plating layer are best made of silicon carbide, which has high strength, high chemical resistance, high abrasion resistance, and good thermal conductivity, and dissipates the frictional heat generated when the traveler runs. It has the advantage of being easy to install and extending the life of the traveler.

As mentioned above, the ring for spinning machines of the present invention has a hard composite plating layer with extremely high hardness in which hard fine particles such as silicon carbide are eutectoid, so it has extremely excellent wear resistance. Spindle rotation speed is 20.00 Or, l
), m. ~30.00 Or, p, m. It has excellent effects such as stable continuous operation is possible even in high-speed operation ranges), traveler burn does not occur, and traveler life can be extended.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway sectional view showing an embodiment of a ring for a spinning machine according to the present invention, FIG. 2 is an enlarged view of the main part, and FIG. 3 is a diagram showing the relationship between heat treatment temperature and N1-P film hardness. (1)...ring, (2)...nickel plating layer,
(3)...Composite plating layer, (4)...Silicon carbide. Figure 1 Figure 3

Claims (1)

[Claims] 1. An electrolytic nickel plating layer is formed in advance on at least the surface of the flange of the spinning machine ring that comes into contact with the traveler, and the surface of the layer contains nickel and phosphorus using hard fine particles as a eutectoid. A spinning machine ring characterized by forming a hard composite plating layer with a nickel alloy matrix. 2. The ring for a spinning machine according to claim 1, wherein the nickel alloy is one of a nickel-phosphorus alloy, a nickel-tungsten-phosphorus alloy, and a nickel-cobalt-phosphorus alloy. 3. The hard fine particles are silicon carbide, tungsten carbide,
Claim 1 or 2 is characterized in that the material is at least one member selected from the group consisting of titanium carbide, boron carbide, chromium carbide, aluminum oxide, diamond, fine metal powder, ceramic, and silicon nitride. rings for spinning machines.