JPH0723566B2 - Ring for spinning machine - Google Patents

Description

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

[Prior art and its problems]

Conventional spinning machine rings are generally formed of low carbon steel, and are carburized and quenched as a surface hardening treatment.

However, with the above ring, the spindle speed is 20,000 rp
m. or more (current high speed rotation is 15,000 rpm to 16,000 rp
In m.), there was a problem that the traveler was seized and scattered in the early morning due to an increase in frictional resistance between the ring and the traveler and a sharp rise in frictional heat, and continuous operation was not possible.

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

[Means for solving problems]

The present invention uses low carbon steel as a material for cutting to form a ring into a desired shape, then heat-treats the ring and surface-polishing it, and then silicon carbide or carbon carbide having a particle diameter of 0.2 to 3 μm. A hard composite plating layer is formed by using hard microparticles made of at least one of elemental and chromium carbide as a co-deposition material and electroless plating of a metal made of one of nickel, cobalt and chromium as a matrix to form a hard composite layer with high hardness. A spinning ring with good wear was formed.

〔Example〕

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

As shown in FIG. 1, a cylindrical S15CK material is cut into a desired ring shape, carburized and quenched, and surface-treated to form a ring (1).

The above ring (1) had a bath composition of 31 g of cobalt sulfate / 61 g of ammonium sulfate / 10 g of sodium hypophosphite / 35 g of sodium citrate, and the plating conditions were controlled to a bath temperature of 50 ° C. and a bath pH of 8.7. It was immersed in a plating bath, 0.5 μm of carbonized flom was added as hard particles at a rate of 2 g / agitating, and electroless composite plating was performed while rotating or rocking the ring (1).

As a result, on the surface of the ring (1), the composite plating layer (2) in which the chromium carbide (3) was co-deposited in the cobalt matrix was formed.

The size of the hard particles is preferably 0.2 to 3 µ, and if the particle size is less than 0.2 µ, the abrasion resistance is poor.

Moreover, the thickness of the hard composite plating layer is preferably 1 μ to 20 μ.
If it is less than μ, abrasion resistance at high speed is insufficient, and if it exceeds 20 μ, the skin of the plating layer becomes rough and cracks occur, and the treatment time becomes extremely long, resulting in cost increase.

Further, the hard fine particles contained in the composite plating layer are silicon carbide having high hardness, good chemical resistance, and good wear resistance, and also good thermal conductivity, and dissipates frictional heat generated by traveling of the traveler. It has the advantage of easily extending the life of the traveler.

〔The invention's effect〕

As described above, the spinning ring of the present invention has a hard composite plating layer in which hard fine particles such as silicon carbide are co-deposited and has an extremely high hardness, and therefore has extremely excellent wear resistance. , Spindle speed is 20,000-30,000rp
It has an excellent effect that stable continuous operation is possible even in a high-speed operation range of m., traveler burn does not occur, and the life of the traveler can be extended.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view showing an embodiment of a spinning machine ring of the present invention, and FIG. 2 is an enlarged view of a main part. (1) …… Ring (2) …… Composite plating layer (3) …… Chromium carbide

Claims (1)

[Claims] 1. Hard microparticles of at least one of silicon carbide, boron carbide, and chromium carbide are used as eutectoid materials on the surface of a flange of a spinning ring that comes into contact with at least a traveler, nickel, cobalt, and chromium. A ring for a spinning machine, wherein a hard composite plating layer having a matrix of electroless plating of a metal of one of the above is formed.