JPH06200424A - Metallic wire for spinning frame - Google Patents

Abstract

PURPOSE:To provide a metallic wire for spinning frame having excellent durability to enable the use over a long period and producible at a low cost. CONSTITUTION:This metallic wire for spinning frame is composed of 0.6-0.95wt.% of C, <=1.0wt.% of Si, <=1.0wt.% of Mn, 12-18wt.% of Cr and the balance Fe with inevitable impurities.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metallic wire for a spinning machine (hereinafter referred to as metallic wire) used in a spinning machine such as a carding machine and an air spinning machine.

[0002]

2. Description of the Related Art Conventional metallic wires are mainly austenitic stainless steel SU which is excellent in abrasion resistance with yarn.
Alloy steel wire rods such as S304 and ferritic stainless steel SUS430 are used. Then, the wire rod is subjected to wire drawing, annealing, rolling, and punching steps to form the edge portion 2 and the tooth portion 3 as shown in FIG. 1, and further, the tooth portion 3 is subjected to quenching treatment to form the metallic wire 1. Manufacturing. In particular, the tooth portion 3 acts on the fiber to be worn, and therefore, it is necessary to finish the tooth portion 3 to have high hardness, impart wear resistance, and enable long-term use.

Further, in recent years, as the speed of spinning machines has increased, the usage conditions of metallic wires have become more and more severe, and it is becoming impossible to deal with them using conventional metallic wires using the above-mentioned materials. Has come to be required.

For this reason, recently, a method of forming a phosphorus-containing alloy layer in which hard particles such as silicon carbide and chromium carbide are dispersed on the surface of the tooth portion by electroplating has been attempted.

[0005]

However, in these methods, the hardness of the tooth portion is increased, but the surface roughness of the tooth portion is increased, and the fibers are concentrated in the concave portions of the tooth surface, and the fibers are Problems arise such as cutting and accelerating wear of the metallic wire. For this reason, it is necessary to increase the number of steps for polishing the surface of the tooth portion, which significantly increases the manufacturing cost.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a metallic wire which is excellent in wear resistance, can withstand long-term use, and is inexpensive to manufacture.

[0007]

In order to achieve the above object, the metallic wire of the present invention has a C: 0.6 weight%.
~ 0.95, Si: 1.0 or less, Mn: 1.0 or less, C
r: 12 to 18, the balance being Fe and unavoidable impurities.

[0008]

The steel having the above chemical composition is a martensitic stainless steel, and by precipitating an appropriate amount of Cr carbide, the hardness can be increased and the wear resistance can be improved. Further, the processing of the metallic wire can be easily performed.
Further, by subjecting the tooth portion to the quenching treatment, the hardness of the tooth portion can be further increased, and the wear resistance of the tooth portion can be further improved.

The reason why the chemical composition of each additive element is limited is as follows. C is an important element that gives the required hardness to the metallic wire, and fine hard C
The formation of r-carbide contributes to the improvement of wear resistance. To obtain these effects, at least 0.6
% Or more is required. However, if it exceeds 0.95%, the toughness and workability are impaired, so this was made the upper limit.

Si is added as a deoxidizing agent, but if it exceeds 1.0%, the workability is impaired and the toughness decreases, so the upper limit was made 1.0%.

Mn is an element that is added as a deoxidizer like Si and increases the strength. However, if it exceeds 1.0%, the workability is impaired, so the upper limit was made 1.0%.

Cr is dissolved in the matrix to improve the corrosion resistance. Some are important elements that form carbides and give wear resistance. In order to exert these effects, at least 12% or more is required in balance with C. However, if it exceeds 18%, the workability deteriorates, so this was made the upper limit.

[0013]

EXAMPLES Examples of the present invention will be described below. First,
In order to see the effects of wear resistance and workability due to the chemical composition of C, Si, Mn, and Cr, metallic wires were made using the test materials shown in Table 1 below.

[0014]

[Table 1]

Specimen No. 1 of the present invention and comparative example 1-13
Is a martensitic stainless steel wire with a wire diameter of 5.5 mm, which has been drawn, annealed, rolled and punched into the metallic wire shape shown in FIG. I made a wire.

Next, the above-mentioned various metallic wires and the conventional metallic wires were actually set in a carding machine and a carding test was conducted. Then, the wear amount of the metallic wire was measured to evaluate the wear resistance, and the workability was evaluated from the processing cost required for manufacturing various metallic wires. The results are shown in Table 2 below.

[0017]

[Table 2]

By the way, the wear-resistant materials shown in Table 2 are the test material Nos. It is expressed by an index when the wear amount of the conventional example of 14 is 100, and the larger the value, the better the wear resistance. Further, the workability is an evaluation of the difficulty of working, and the test material No. is based on the working cost spent for working such as wire drawing and rolling. It is represented by an index when the processing cost of the conventional example of 14 is 100, and the larger the value, the poorer the workability. That is, it is a practical and excellent metallic wire that shows good wear resistance and good workability in the test results.

The test material No. of the present invention shown in Table 2 is used. 4, 7, 10
The metallic wire using the alloy has wear resistance of 180 or more and workability of 120 or less.
o. Compared with the metallic wire of the conventional example using Nos. 14 and 15, the abrasion resistance is about twice the value, but the processing cost is about the same value, and the metallic wire with good abrasion resistance can be easily obtained. You can see that you can get it.

However, the test material No. 8, 11,
The wear resistance of the metallic wire using No. 13 is 200 or more, which is the best. Although the value is more than twice that of the metallic wire of the conventional example using Nos. 14 and 15, it is inferior in practicality because the workability is 1.6 to 2 times that of the conventional product.

[0021]

Since the metallic wire of the present invention uses steel containing a specific chemical component as a raw material, it has excellent wear resistance, can be used for a long time, and can be manufactured at a low cost. In addition, when used in a spinning machine, it can be used for a long period of time, the metallic wire replacement period can be extended, and the productivity of the spinning machine can be improved.

[Brief description of drawings]

FIG. 1A is a partially cutaway front view showing a metallic wire for a spinning machine, and FIG. 1B is a sectional view taken along line AA in FIG.

[Explanation of symbols]

 1 Metallic wire 2 Edge 3 Teeth

Claims (1)

[Claims] 1. C: 0.6 to 0.95 by weight%, Si:
A metallic wire for a spinning machine, comprising 1.0 or less, Mn: 1.0 or less, Cr: 12 to 18, balance Fe and inevitable impurities.