JPS63270818A - Ring for spinning frame - Google Patents

Abstract

PURPOSE:To obtain the titled ring enabling stable continuous operation of a spinning frame without causing burning and abnormal abrasion of traveller, by forming an Ni (alloy) coating layer on a surface of a ring and mutually diffusing the matrix and the coating layer, thereby forming a double-layer structure composed of a diffused surface layer and the matrix material. CONSTITUTION:A coating layer of Ni or an Ni alloy (preferably Ni-P alloy, Ni-W-P alloy, Ni-Co-P alloy or Ni-B alloy) is formed on a surface of a ring for spinning frame at least at the part sliding with a traveller. The matrix material is mutually diffused with the coating layer e.g. by heating the coated ring at a high temperature to obtain the objective ring having a double-layer structure composed of a diffused surface layer 2 and the matrix material 1.

Description

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

[Conventional technology and its problems]

Conventional rings for spinning machines are generally made of low carbon steel, and are subjected to carburizing and quenching as a surface hardening process.

However, under harsh conditions in today's spinning mills, for example, when the spindle rotation speed exceeds 20,000 r, p, m, the frictional resistance between the ring and traveler increases and the frictional heat rapidly increases, resulting in seizure. The roughness of the ring surface and the resulting deterioration of friction conditions caused fatigue wear on the ring, resulting in poor fitting of the ring, shortening its lifespan, and degrading the performance of the ring.

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

[Means for solving problems]

The present invention involves forming a ring in a desired shape using low carbon steel as a material and carburizing it, or forming a ring shape using medium or high carbon steel as a material, and then forming a nickel film of αO1-8Is. 3-90 at a temperature of ゜℃～100Q℃
The nickel layer and the base material are diffused into each other by heat treatment over a period of several minutes, so that the nickel layer becomes a nickel-iron alloy.

The nickel-iron layer on the surface of the ring acts as an adhesion inhibitor to reduce the seizure of the trapella, and it adheres strongly to the underlying base material for a long-lasting effect. This reduces traveler burnout, eliminates abnormal travel of the trapeller, reduces fatigue wear on the sill, and extends the life of the ring. In addition, 92 and Kel diffuse into the base metal and act as elements that improve hardenability, producing compressive residual stress in the surface layer during hardening to lower the M8 point, which further extends life by improving fatigue resistance. sell.

The thickness of the nickel film was α01μ~3P, but αOIP
If the gap is less than 3P, the effect of suppressing adhesion is small, and if it is 3P or more, the nickel layer will wear away unevenly during operation, causing surface waviness and deteriorating the performance of the ring.

Examples of materials used in place of the nickel layer in the above-mentioned coating layer include nickel-li/alloy, nickel-tungsten-phosphorus alloy, nickel-pbalt-phosphorus alloy, and nickel-da-1 alloy.

〔Example〕

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

Electrical products with a thickness of lp, cut from high carbon chromium bearing steel material.
After Kel plating, heat at 830°C in a nitrogen gas atmosphere.
, heated for 20 minutes, then put into oil and quenched at 180℃ for 6 hours.
Tempering is performed for 0 minutes to form a ring for a spinning machine.

By heating at 830°C for 20 minutes, the υnickel layer and the iron base material were diffused, and a ring base material (1) and a diffusion layer were formed as shown in Figure 1. Figure 2 KX-ray A line analysis chart taken in the depth direction using a microanalyzer shows that the nickel layer is diffusing with iron.

Figure 3 is a curve diagram of running time and yarn breakage when a practical test was carried out using ring A for spinning machines of the present invention, and compared with conventional ring B for spinning machines, initial yarn breakage and steady state It can be seen that the yarn breakage is reduced by 1 to -LK, and the conformability and spinning stability are excellent.

FIG. 4 is a curve diagram of operating time and wear loss when a practical test was conducted using ring A for spinning machines of the present invention, and compared to conventional ring B for spinning machines, the ring length for spinning machines of the present invention was approximately It can be seen that if the wear loss of - is reduced, the life will be 5 times longer than L.

In the examples, the nickel coating was performed by electroplating, but other methods such as electroless plating, vacuum evaporation, sputtering, etc. can be used.

〔Effect of the invention〕

The ring for spinning machines of the present invention has a surface layer in which nickel or Ni-Kel alloy is mixed with the iron base material, so it has the effect of suppressing adhesion with the traveler and the formation of a stain layer quickly and stably. However, there is no burnout or abnormal wear of the traveler, and stable continuous operation is possible from the initial stage even in the high spindle rotation speed range of i90.00 Or, p, m, etc., and the ring life is extended. This invention has the excellent effect of being able to extend the length of time.

[Brief explanation of drawings]

Fig. 1 is a cutaway cross-sectional view of essential parts of an embodiment of a ring for an O-spinning machine according to the present invention, Fig. 2 is a line analysis chart of nickel and iron using an X-ray microanalyzer for the diffusion layer and base material, and Fig. 3 is a diagram of the present invention. and FIG. 4 is a curve diagram of the operating time and the number of thread breakages of the present invention and the conventional example. FIG. 4 is a curve diagram of the operating time and wear loss of the present invention and the conventional example. (1)... Ring base material (ri... Diffusion layer

Claims (2)

[Claims] (1) After forming a nickel or nickel alloy coating layer in advance on at least the surface of the spinning machine ring that comes into sliding contact with the traveler, the base material and the coating layer are mutually diffused to form a two-layer structure of the diffusion layer and the base material from the surface. A spinning machine ring characterized by: (2) The nickel alloy layer is made of one of nickel-phosphorus alloy, nickel-tungsten-phosphorus alloy, nickel-cobalt-phosphorus alloy, nickel-boron alloy, etc. Ring for spinning machine.