JPH05117927A - Ring for spinning machine - Google Patents

Abstract

PURPOSE:To provide a spinning ring which has excellent abrasion and enables stabilized operation even at an ultrahigh rotation level by forming a plated layer of nickel-phosphine alloy composite, an eutectic substance from hard fine particles and solid lubricant fine particles on the flange contacting with the traveler. CONSTITUTION:On the ring flange surface which contact the traveler, a composite plated layer 5 of nickel-phosphine alloy, which is made of a eutectic substance from hard fine particles preferably of silicon carbide, tungsten carbide, boron nitride, boron carbide and/or aluminum oxide and solid lubricative fine particles preferably of molybdenum disulfide, graphite, PTFE and/or tungsten disulfide, is formed to give the objective ring which can express its excellent performance in high-speed fine yarn spinning.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ring for a spinning machine, which is used for spinning in spinning and exhibits excellent performance particularly in high-speed spinning.

[0002]

2. Description of the Related Art In conventional spinning rings, low carbon steel is generally used, and carburizing and quenching is performed as a surface hardening treatment. However, in the above ring, when the spindle rotational speed is 20000 rpm or more, the friction resistance between the ring and the traveler increases, and the frictional heat rapidly increases, so that the traveler seizes early and wear is scattered, which prevents continuous operation. There was a problem.

[0003]

In order to solve the above problems, there has been proposed a ring flange whose surface is nickel hard plated. However, in the above ring, the wear resistance and spinning stability were not sufficient in the ultrahigh speed rotation range of the spindle rotation speed of 24000 rpm or more.

The present invention has been made as a solution to the problems of the prior art. The purpose of the present invention is to improve the wear resistance of the ring itself as well as the wear of the traveler traveling on the ring flange. The object is to provide a spinning ring that can be reduced in number and can be stably operated even in an ultra-high speed rotation range.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and at least after low-carbon steel is formed by turning into a predetermined ring shape and carburized and tempered. The content of hard fine particles and solid lubricant fine particles on the surface of the flange that comes in contact with the traveler is 5-40, respectively.
Volume%, and the total content of the above fine particles is 10 to
A hard plating layer having a matrix of a nickel alloy containing nickel and phosphorus, which was co-deposited so as to have a volume of 50% by volume, was formed to have a thickness of 5 to 35 μm, and then 300 to 450 ° C. By performing heat treatment at a temperature of 50 to 150 minutes, a ring for spinning machine, which has both lubricity, conformability, and wear resistance, is provided, which is optimal for spinning and twisting at high speed and high production.

The content of the hard fine particles is set to 5 to 40% by volume, but if it is less than 5%, the effect of improving wear resistance is insufficient, and if it exceeds 40%, the cost increases. Further, the content of the solid lubricant fine particles is set to 5 to 40% by volume, but 5%
If it is less than 40%, the lubricating effect is insufficient, and if it exceeds 40%, the coating strength becomes weak and peeling wear and the like are likely to occur. Also,
Although the total content of the eutectoid substances was set to 10 to 50% by volume,
If it is less than 10%, the expected effects in wear resistance and lubricity cannot be obtained, and if it exceeds 50%, the strength of the coating film is deteriorated and peeling wear or the like is likely to occur.

Further, the thickness of the plating layer is set to 5 to 35 μm, but if it is less than 5 μm, the effect of abrasion resistance is poor, and the thickness is 35 μm.
If it exceeds m, it is not economically preferable.

[0008]

The spinning ring of the present invention has a nickel-phosphorus alloy composite plating layer formed by co-depositing hard fine particles and solid lubricant fine particles on the ring flange surface.
It has excellent lubricity, good initial compatibility with travelers, and good wear resistance, making it suitable for ultrahigh-speed, high-speed operation.

[0009]

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 to 3, a ring main body 1 is formed by cutting a low carbon steel containing 0.15% C into a predetermined shape and then carburizing and quenching it.

The ring 1 is subjected to plating pretreatment such as degreasing and pickling, and is then electroless plated to form a matrix of nickel-phosphorus alloy 2 with silicon carbide 3 having an average particle diameter of 1 μm and an average particle diameter of 0.1 μm. A 5 μm molybdenum disulfide 4 is used as an eutectoid substance to form and coat a SiC / MoS ₂ composite Ni—P amorphous alloy plating which is dispersed and precipitated so that the content rates are 25% by volume and 20% by volume, respectively.

The ring 1 plated with the SiC-MoS ₂ composite Ni-P amorphous alloy was placed in a heat treatment furnace and
Heat treatment is performed by heating at a temperature of 50 ° C. for about 1 hour.
In the above-mentioned SiC / MoS ₂ composite Ni-P amorphous alloy plating, nickel-phosphorus of the matrix is crystallized by heat treatment and changed into a mixed structure of Ni ₃ P and Ni crystals.
A composite plating layer 5 having a hardness of 1000 and enhanced adhesion between the eutectoid substance and the matrix is formed.

Next, the surface of the ring flange portion 6 where the ring and the traveler contact and slide with each other is subjected to polishing by lapping to form a composite plating having a thickness of 30 μm, and the surface roughness is centered. Line average roughness Ra = 0.056
A desired spinning machine ring having a smooth surface of not more than μm was constructed.

The surface of the composite plating layer can be formed into a satin-like shape by polishing the surface of hard fine particles by polishing by lapping and voids due to falling of the fine particles.

[0014]

Since the ring for a spinning machine of the present invention is constructed as described above, a lubricant is present in the frictional sliding portion between the traveler and the ring, and the initial familiarity of the traveler with the ring is greatly improved. In addition, since a hard substance is present as a eutectoid substance and a composite plating layer having excellent wear resistance is formed, the life is extended and the product can be used for a long period of time.

Further, it is an invention having an excellent effect that the yarn breakage is small even under the conditions of ultra-high speed and high spinning, and stable spinning is obtained for a long period of time.

[Brief description of drawings]

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

FIG. 2 is an enlarged cross-sectional view of a main portion near a flange portion of the spinning ring of the present invention.

FIG. 3 is an enlarged cross-sectional view of a main part of the composite coating formed on the surface of the spinning ring of the present invention.

[Explanation of symbols]

1 Ring for spinning machine 2 Nickel-phosphorus alloy plating 3 SiC fine particles 4 MoS ₂ fine particles 5 Composite plating layer 6 Flange surface

Claims (4)

[Claims] 1. A composite plating layer having hard fine particles and solid lubricant fine particles as a co-deposition material and a nickel alloy containing nickel and phosphorus as a matrix is provided on at least a flange surface of a spinning ring in contact with a traveler. Ring for spinning machine characterized by. 2. The composite plating has a hard fine particle content of 5 to 40% by volume, a solid lubricant fine particle content of 5 to 40% by volume, and a total of hard fine particles and solid lubricant. The ring for a spinning machine according to claim 1, wherein the content of is 10 to 50% by volume. 3. The spinning machine ring according to claim 1, wherein the hard fine particles are at least one kind of silicon carbide, tungsten carbide, boron nitride, boron carbide, and aluminum oxide. 4. The ring for a spinning machine according to claim 1, wherein the solid lubricant fine particles are at least one kind of molybdenum disulfide, graphite, PTFE and tungsten disulfide.