JPH0533227A - Ring for spinning machine - Google Patents

Abstract

PURPOSE:To obtain a ring for spinning machine without applying heat treatment so as to eliminate deformation and change of dimension resulting from heat treatment, having low roundness, excellent wear resistance, attained energy saving, capable of stably and continuously operating a spinning machine. CONSTITUTION:An aluminum alloy is used as a raw material, subjected to cutting processing into a given flange shape having 25mum roundness (f) to form a ring for spinning machine. The ring is subjected to electric nickel composite plating so that the surface of the ring has 10wt.% silicon carbide having 1mum particle diameter as a coprecipitated substance to provide a composite plated layer comprising nickel as a matrix and silicon carbide as the coprecipitated substance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning machine ring used in a spinning machine.

[0002]

2. Description of the Related Art In conventional spinning rings, low carbon steel is generally used, and carburizing-quenching-tempering is performed as a surface hardening treatment for the purpose of imparting wear resistance. But,
In the above ring, dimensional change and deformation due to these heat treatments are large, the sliding of the traveler on the ring flange becomes unstable, the friction resistance between the ring and the traveler increases, and the friction heat rises sharply. There is a problem in that stable continuous operation cannot be performed when the spindle rotation speed is 17,000 rpm or more due to entrainment and yarn breakage.

Therefore, a ring made of high carbon chrome bearing steel, which does not require carburization at high temperature, has been adopted. However, although this type of ring reduces dimensional deformation and deformation, it has a problem that the firing strain is still large and stable continuous operation cannot be performed under high-speed conditions where the spindle rotational speed is 20,000 rpm or more.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the prior art. The object of the present invention is to achieve a small roundness, excellent wear resistance, and weight reduction. The object is to provide a ring for a spinning machine, which enables stable and continuous operation.

[0005]

In order to achieve the above object, the spinning ring of the present invention is made of aluminum or an aluminum alloy and is cut into a required ring flange shape having a roundness (f) of 50 μ or less. The problem is solved by processing and forming a composite plating layer on the surface of which by electroplating silicon carbide as a co-eutectoid material and nickel as a matrix.

In the structure of the present invention, the surface of the ring on which the composite plating layer has been contacted and slid by the traveler is further subjected to polishing processing so that the surface roughness of the center line average roughness (Ra) is 0.
It is desirable to be 2 μm or less.

The amount of silicon carbide in the composite plating is preferably in the range of 2 to 20% by weight for obtaining wear resistance under high-speed conditions, and when it is less than 2% by weight, sufficient wear resistance is obtained. I can't. On the other hand, if it exceeds 20% by weight, fine particles of silicon carbide are aggregated on the composite plating layer and the surface to cause detachment, which is not preferable.

The particle size of the above silicon carbide is 0.2 to 3 μm.
When the thickness is less than 0.2 μ, the wear resistance is inferior, and when it exceeds 3 μ, the composite plating layer is likely to fall off, which is not desirable.

By the way, the thickness of the composite plating layer is 5 to 50.
If it is less than 5μ, the wear resistance is not sufficient at high speed operation and wear is premature, and if it exceeds 50μ, the variation of the plating thickness becomes large and the plating time becomes long, resulting in cost increase. Become.

Further, the contacting and sliding surface of the traveler has a center line average roughness (Ra) of 0.2 μ or less by polishing to smooth the high speed traveling of the traveler.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, an aluminum alloy (6063) is used as a raw material and is cut into a required ring flange shape having a roundness (f) of 25 μ.
To form. Nickel composite plating was performed on the surface of the ring 1 by electroplating so that silicon carbide having a particle size of 1 μm was contained as a co-deposition material in an amount of about 10% by weight, and nickel 3 was used as a matrix and silicon carbide 2 was a co-deposition material. The composite plating layer 4 is formed.

Next, the ring 1 is prepared by lapping the flange surface 5 on which the traveler comes into contact and sliding, the surface of the buff made of felt, cotton cloth, etc., by lapping with a buff having diamond particles adhered thereto, and then the traveler. A fine ring of silicon carbide was exposed on the contact surface with and a surface roughness was formed on a smooth polished surface of Ra 0.1 μm to form a spinning ring (A) of the present invention.

Next, the circularity (f) 10 obtained by carburizing and quenching the spinning ring (A) of the present invention and the conventional low carbon steel
A comparative test was performed using a 0 μ ring (B) under the following conditions.

Thread: Ester / cotton 45 count ring: 3.2mmF 41mmφ × 57.5mmφ Traveler: YS-2 / hf 11/0 (nickel plated) Spindle speed: 15,000-28,000r.p.m.

FIG. 3 shows the frictional resistance index of the traveler and the ring at each spindle rotation speed under the above spinning conditions.
When the spindle speed exceeds 18,000 rpm, the friction resistance index of the conventional ring (B) begins to rise to 22,000.
At high speeds above rpm, traveler seizure and wear proceed, making continuous spinning impossible.

On the other hand, the ring for spinning machine (A) of the present invention
Is the spindle speed 18,000r.pm ~ 22,000r.
The increase in the frictional resistance index was small even at pm, 26,000
Even in the ultra high speed range of 0 rpm, there was almost no seizure or wear of the traveler, and stable continuous spinning was possible.

[0018]

As described above, according to the present invention, the roundness (f) is as small as 50 μ or less, and the surface in contact with the traveler has a high hardness, a large abrasion resistance, and a silicon carbide having a good thermal conductivity. A co-deposited composite nickel plating layer is formed, and the material used is aluminum or aluminum alloy, so it is easy to dissipate the frictional heat due to traveling by a traveler.
Even in the ultra high speed range of pm, there was no seizure of the traveler, no scattering, and little ring wear, enabling continuous operation. In addition, the ring of the present invention has an excellent effect such as the power saving of the spinning machine because of the weight of about 35% of the conventional ring.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view showing an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of the relevant part.

FIG. 3 is a curve diagram showing a relationship between each spindle rotation speed and a frictional resistance index.

[Explanation of symbols]

 1 ring 2 silicon carbide 3 nickel 4 composite plating layer 5 flange surface

Claims (1)

Claim: What is claimed is: 1. An aluminum or aluminum alloy spinning ring having a circularity (f) of 50 μm or less is formed by electroplating on a surface of at least a flange of the ring for spinning machine made of aluminum or aluminum alloy, which is in contact with the traveler. A ring for a spinning machine, which is provided with a composite plating layer.