JPS62161940A - Metallic traveler for spinning machine - Google Patents

Abstract

PURPOSE:To improve the toughness and wear resistance by using a high-speed steel wire rod contg. specified amounts of C, Si, Mn, Cr, W, Mo, V, Nb and REM as stock and by uniformly dispersing carbide in the matrix by heat treatment. CONSTITUTION:This metallic traveler for a spinning machine is obtd. by using a high-speed steel wire rod contg. 0.35-1.5% C, 0.1-2% Si, 0.1-1.5% Mn, 2-10% Cr, 1-15% W, 1-10% Mo, 0.5-5% V, 0.1-5% Nb and 0.005-0.6% REM as stock. This stock is formed into a prescribed shape and subjected to hardening and tempering each at a prescribed temp. to finely and uniformly disperse carbide in the matrix.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a metal traveler for spinning machines used in I/i spinning machines, yarn twisting machines, etc.

Conventional technology and its problems Conventionally, spinning machine travelers used in spinning machines, yarn twisting machines, etc. are made of hard steel wire rods, formed into predetermined shapes such as vertical or horizontal, and hardened by quenching, tempering, etc. Raised and used. However, in recent years, in the spinning industry where high production and high speed spinning are carried out in a harsh spinning environment and where improvements in operational efficiency are required, from the viewpoint of stable operation and economics, travellers, which have excellent wear resistance and long service life, are required. There is a demand for a traveler with less burning, less thread breakage, and less thread fuzz.

Therefore, with the above-mentioned hard steel wire rod traveler, the heat resistance and abrasion resistance due to the frictional heat generated during high-speed operation are insufficient, and traveler burn occurs, and the traveler scatters and thread breaks due to abnormal wear, so the above requirements are not met. There are various problems that cannot be fully satisfied.

Means to solve the problem Unissued F3AFi This is a method to solve the above problem, and C0
, 35-1.5%, Si 0.1-2.0%, Mn00
1-1.59b, Cr 2-10%, W1-15%,
M01-10%, V 0.5-5.0%, Nb 0.
Contains 1 to 5.0% F, and one or more REM is added to this by 1 o, oos to 0.6%, or Co 1
~15%, B0. OO1-0.05%, Ti2. O%
Below, Zr2.09b or less, Hf2a% or less, Y2.0
% or less, Ni O - 20 to 25% or less, NO 63% or less, and the remainder is iron and impurities.
By molding into horizontal and other traveler shapes, high production and
A metal traveler for spinning machines that can be used under high-speed spinning conditions, has no yarn breakage, has excellent abrasion resistance, heat resistance, and has a long life without traveler scattering? ! : The aim is to solve this problem by providing the following:

The reason for limiting the components of the traveler-forming alloy steel wire rod used in the present invention is that C dissolves solidly in the matrix to increase hardness;
In addition, carbide forming sources combine with elements to form hard double carbides, but if it is lower than 0.35%, the hardness of the base is insufficient, and 1
, if it exceeds 5%, the toughness decreases.

Si is usually added as a deoxidizing agent, and as Si increases, carbide becomes finer and hardenability improves.

Also, if it exceeds 2.0%, it will become brittle, so keep it below this level.O 1.5% or less.

Cr forms carbide and improves wear resistance.

Moreover, it dissolves in solid solution in the matrix, improving hardenability and improving oxidation resistance. There is no effect if the amount added is less than 2.0 porridge, and 1
If it exceeds 0%, the temper softening resistance decreases and the steel becomes brittle.

Combines with W and Mold C to form a composite carbide, which improves wear resistance and high-temperature hardness. If it is less than 1%, the effect is small, and if it is added in a large amount, the amount and size of carbides become excessive, resulting in a decrease in cold workability and toughness.
t" upper limit.

v/I'i Forms hard carbides, improves tempering hardness and wear resistance, and has the effect of refining crystal grains. If it is less than 0.59b, there is no effect, and if it is added in a large amount, the toughness will deteriorate. Therefore, along with the addition of Si and Nb% REM, the carbide can be finely and uniformly dispersed, and it can be contained in a larger amount than before, and the upper limit is 5%.

Since Nb forms fine special carbides with a high melting point, it prevents coarsening of crystal grains due to heating. Further, by adding REM in combination, fine and uniform Nb-rare earth charcoal is formed.

A minimum fi of 0.1% or more is recommended for exhibiting this effect, and if it exceeds 5%, the toughness will deteriorate completely.

REM (Las Co1 Pr, Nd, etc.) is similar to Nb.
When m is added, Nb-rare earth carbide is completely formed at 1,400 to 1,500°C, and has the effect of finely and uniformly distributing it.

o, o o s%% or less has no effect, 0. If it exceeds a%, workability deteriorates, so the upper limit is set to 0.6.

Co is added to the base to strengthen the base and improve high-temperature hardness. In order to exhibit this effect, 1.0% or more is required, and since adding too much will reduce toughness, the content is limited to 15% or less.

Addition of a very small amount of BF'i significantly improves hardenability.

It also has the effect of preventing deterioration of toughness. If it is less than 0.001%, there is no Fi effect, and if it is added in a large amount, workability deteriorates, so the upper limit is set at 0.05%.

If N exceeds 0.3%, it will form nitrides with Nb, REM, Zr, Ti, etc., resulting in a decrease in toughness, so the upper limit should be set at 0.3%.
%.

Zx, Hl, Ti, Y, and the like fix nitrogen, finely precipitate carbides, and refine crystal grains, contributing to improving toughness. If the amount added is too large, giant carbides will crystallize and cause embrittlement, so the upper limit was set at 2%.

Ni improves hardenability and contributes to improving toughness through grain refinement. In order to exhibit this effect, 0.25% or more is required. However, if it is contained in a large amount, the amount of residual autenite increases rapidly and the toughness decreases, so the upper limit is set at 2.
．． Set to 0%.

By using a high-speed fA wire rod with the complete composition as described above, the formed traveler has heat resistance, high toughness, and high abrasion resistance, and has a long life metal traveler without thread breakage, traveler burn, or scattering. It's a good thing.

Hereinafter, one embodiment of the present invention will be explained based on a gold diagram.

Example 1 C0.87%, Si 1.10%, MnO-35%,
Cr4.12%, Mo 4-97%, W6.14%, V
o, %%, Nb1.04%, La2O2S%, CoO
-02%, Nd 0.06%, Y 0.65%, N0.
A high-speed steel wire, the balance of which is iron and impurities, is formed into a specified horizontal shape (1) or vertical shape (2) using a molding machine as shown in Figure 1 (a) and middle), and heated to 1200°C. After quenching, tempering treatment at 550°C for 1 hour was performed twice.

A fully formed metal traveler with high toughness, high wear resistance, and excellent heat resistance has a hardness after HV 700 fitJ.

Due to the combined addition of Nb and REM to the metal traveler for spinning machines formed in this way, as shown in Fig. 2, hard carbides ←) are finely and uniformly distributed in the traveler martensite base (3), resulting in high toughness and high performance. This carbide provides wear resistance and acts effectively when the traveler's ring surface slides, fully exhibiting its anti-friction properties.

Example 2 C0.86%, Si1.20%, Mn 0.38%, C
r4.03%, Mo 5.06%, W7.13%
, V 0.81%, Nb 1.04%, La 0.09%
, Ce0003%, Yo, 63%, N0.03%, Ni
O036% A high-speed tool steel wire whose capital is iron and impurities is formed into a horizontal shape (1), a vertical shape (2), or a conical shape β shown in FIG. 3 in the same manner as in Example 1, After quenching at 1200°C, the ash was burnt at 550°C for 1 hour, and the treatment was performed twice. The metal traveler obtained in Example 2 had fine spherical carbides evenly distributed as shown in FIG. 2, and had excellent toughness, wear resistance, heat resistance, and anti-friction properties.

The surface of the traveler obtained in Example 1.2 above is subjected to surface treatments such as Niracle plating, Nira Gullin alloy plating, ceramic particle dispersed composite plating, and lubricating resin coating to further improve wear resistance and lubricity. can be done.

In order to compare the metal traveler of the present invention with a conventional carbon steel trapeller, a spinning test was conducted under the conditions shown below. Thread: Ester/Cotton 45' Ring: 3.2 m 7 langes 41ffφ Traveler:
YS-2 (box type) 1210 spindle rotation &: 25
The results of the 000 r-P-m spinning test are as shown in Figure 4. Compared to the conventional metal traveler B, the metal traveler Yake of the present invention has excellent abrasion resistance, and the wear loss is small, about 40% reduced, and about 2. A double life extension was achieved.

Furthermore, even when released during high-speed operation, it has excellent heat resistance, abrasion resistance, and lubricity, and there was almost no occurrence of traveler burn due to frictional heat or traveler scattering due to abnormal wear.

Effects of the Invention As described above, the present invention uses C1Cr5 St, Mn, Cr, W, and Mo as alloying elements that compose high-speed steel.

In addition to V and Nb, one or more types of REM, or Co,
Since the metal traveler is made of alloy steel made of alloy steel to which one or more constituent elements selected from B, TtlZr, Hfs Ys Ni, N, etc. are added, the charcoal material can be dispersed finely and uniformly in the base through heat treatment. It is possible to impart high toughness and high wear resistance to the traveler.

Therefore, compared to conventional products, it has superior toughness, high abrasion resistance, and heat resistance, which greatly reduces the occurrence of traveler burn, traveler scattering, and the number of thread breakages, resulting in a long-life traveler.

Furthermore, this invention has the effect of enabling continuous operation in high-speed spinning with a spindle rotation speed of 20.00 or p-Xn or more, and achieving stable operation.

[Brief explanation of drawings]

Figures 1 (A) and (B) A front view of a metal traveler for a spinning machine showing the first embodiment of the present invention, Figure 2 is a metallographic diagram showing the same cross section, and Figure 3 shows another embodiment of the same. The front view shown in FIG. 4 is a curve diagram showing the relationship between the number of days of use and the wear loss of the traveler. (1)...Horizontal, (21...Vertical, (
3)...base, (4)...charcoal, (
5) Conical shape.

Claims (2)

[Claims] (1) C0.35-1.5%, Si0.1-2.0%,
Mn0.1-1.5%, Cr2-10%, W1-15%
, Mo1~10%, V0.5~5.0%, Nb0.1~
5.0% and one or more types of REM from 0.005%
A metal traveler for a spinning machine, characterized in that it is made of a high-speed steel wire rod consisting of 0.6% iron and impurities, and is formed into a predetermined shape. (2) C0.35-1.5%, Si0.1-2.0%,
Mn0.1-0.5%, Cr2-10%, W1-15%
, V0.5-5.0%, Nb0.1-5.0% and Co1
~15%, B0.01~0.05%, Ti2.0% or less, Zr2.0% or less, Hf2.0% or less, Y2.0% or less, Ni0.25~2.0%, N0.3% A metal traveler for a spinning machine, characterized in that it is formed into a predetermined shape using high-speed steel containing one or more of the following component elements.