JPH05148724A - Production of traveller for spinning machine - Google Patents

Abstract

PURPOSE:To produce a traveller for spinning machine having high abrasion resistance in short step at a low cost by charging more than a specific amount of superheated steam and carbon dioxide gas into a hardening austenitizing oven to form a scale on the surface and carrying out the hardening and tempering of the traveller to effect the transformation to magnetite scale. CONSTITUTION:A metallic traveller is formed to a prescribed form and subjected to heat-treatment such as hardening and tempering. In the above process, >=5% of superheated steam and carbon dioxide gas having a prescribed concentration are introduced into the hardening austenitizing oven to form scale, the product is hardened by a hardening and quenching process and the scale is transformed to magnetite scale by the tempering process to obtain the objective traveller for spinning machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a traveler for a spinning machine used in a spinning machine, a twisting machine, etc.

[0002]

2. Description of the Related Art Due to recent high production and high-speed spinning, the problem of service life due to seizure wear of travelers is highlighted, and in order to deal with it, scale coating is used instead of conventional metal plating (Fig. 4). Those that have been treated and those that have undergone a resin coating treatment have been developed.

[0003]

In the above scale coating method, as shown in, for example, Japanese Patent Laid-Open No. 63-315620 (FIG. 5), it takes a long time to generate scale because the processing temperature is low. In addition, since the scale thickness cannot be obtained sufficiently, there is a problem that the cost is high and the life is insufficient. The method of resin coating treatment is, for example, as shown in Japanese Patent Publication No. 61-446 (FIG. 6),
There is a problem that the method is long and costly.

The present invention has been made in order to solve the above-mentioned conventional problems, and provides a method capable of shortening the process and obtaining the same abrasion resistance as that of resin processing, at low cost. To do.

[0005]

The method of manufacturing a traveler for a spinning machine according to the present invention comprises forming a metal traveler into a predetermined shape and performing heat treatment such as quenching and tempering in a quenching austenitizing furnace at 5%. After the above superheated steam and carbon dioxide gas of a predetermined concentration are added to form a scale, the scale is characterized by quenching in a quenching cooling step and then transforming into a magnetite scale in a tempering step. .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method of manufacturing a traveler for a spinning machine according to the present invention will be described below with reference to the drawings. As shown in FIG. 3, the method for manufacturing a traveler for a spinning machine of the present invention, after the molding and polishing steps,
5% or more of superheated steam and carbon dioxide gas are put into a quenching austenitizing furnace at about 850 ° C. and left for a predetermined time to uniformly form a wustite scale of 5 to 20 μm. Then, it is put into quenching oil to be quenched, and then put into a tempering furnace to undergo rapid transformation at a predetermined temperature of about 470 ° C., thereby forming 90% or more of magnetite scale 2, and FIG. , A spinning machine traveler 1 as shown in FIG.

The temperature of the tempering furnace changes depending on the required physical properties, but the earliest point of scale transformation is 470 ° C. If the quenching temperature and time are adjusted so that the finished physical properties are close to this temperature, the conventional The scale transformation can be completed in a much faster time than the steam treatment. In the conventional steam method, the thickness of the scale reaches only about 1 μ even if it is soaked for 30 minutes to 2 hours, which is insufficient for sufficient wear resistance, and it takes a long time to obtain the required thickness. In the method of the present invention, the return time is up to 30 minutes and 5
It is possible to obtain a thick scale (Fe ₃ O ₄ ) of ˜20 μm.

[0008] The steam at the quenching step is turned on, and provide a faster growth time scale, and at a purpose that allowed to quickly transform into magnetite during tempering, other oxidizing gases, water vapor in the CO _2, O _2, etc. This is because the scale formation and transformation as in the above case cannot be obtained at all. Therefore, not can also perform the same scale formation in air or the like, since the entrance of the air in the processing furnace is a failure of the scale formation, the relatively the scale CO ₂ gas that do not interfere with generation processing furnace To shut off the air.

The target of the quality of the scale according to the manufacturing method of the present invention is the amount of scale adhesion and the amount of transformation to magnetite scale. If these two points satisfy predetermined values, a long-life coating can be obtained. I can. Therefore, it is important to determine the amount of steam and the quenching furnace soaking time to determine the scale deposit amount properly.The scale transformation amount depends on the temperature conditions and soaking time in the tempering furnace, and the quenching furnace steam. It depends on a stable supply of.

[0010]

INDUSTRIAL APPLICABILITY The magnetite scale formed by the scale transformation of the present invention has a dense surface and forms a strong film with great wear resistance, and is particularly effective in preventing metal seizure, and scales the metal contact between the traveler and the ring. Since it is harder than that of the resin coating, it has a high wear resistance and enables the life of the traveler at high speed to be secured.

Further, as shown in FIG. 2, the scale is formed so that the scale covers the entire surface, so that the scale has a strong rust preventive power.
Furthermore, the production method of the present invention can provide a low-speed and long-life traveler for high-speed rotation, and also prevents the occurrence of yarn fluff and yarn breakage during spinning due to the fact that the surface is hard and dense. It has an excellent effect of exerting its effect.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a traveler for a spinning machine formed by a manufacturing method of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a process drawing showing the method for manufacturing a traveler for a spinning machine of the present invention.

FIG. 4 is a manufacturing process diagram of a conventional metal traveler.

FIG. 5 is a manufacturing process diagram of a conventional steam method.

FIG. 6 is a manufacturing process diagram of a conventional resin coating method.

[Explanation of symbols]

 1 Spinner Traveler 2 Scale

Claims (1)

[Claims] 1. In a step of forming a metal traveler into a predetermined shape and performing heat treatment such as quenching and tempering, superheated steam of 5% or more and carbon dioxide gas of a predetermined concentration are put into a quenching austenitizing furnace. After forming a scale by quenching, quenching is performed in a quenching cooling step, and then transformed into a magnetite scale in a tempering step.