JPH04271739A - Part for fishing rod - Google Patents

Abstract

PURPOSE:To provide the subject part comprising a specific sintered product containing the carbide, nitride, etc., of a metal element selected from the 4a and 5a group metal elements, and having a porosity of a specific porosity, excellent strength, abrasion resistance, etc., and maintaining a lustrous gold color over a long period. CONSTITUTION:The objective part comprises a sintered product containing >=50vol.% of the carbide, nitride or carbonitride (e.g. TiN, TiC or TiCN) of one or more selected from the 4a and 5a group metal elements and having a porosity of <=5% (preferably <=3%).

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to parts for fishing gear such as fishing line guides, and more particularly to parts that are golden in color and have excellent wear resistance.

0002

2. Description of the Related Art Conventionally, parts for fishing equipment, such as guide rings that come into contact with fishing lines, are generally made of plastic or metal such as stainless steel. This metal part has great impact resistance and will not break even if it hits rocks, concrete, etc. during use, but due to its low hardness, it can be rubbed by fine sand etc. attached to the threads. The disadvantage is that the surface is easily scratched and is subject to high wear.

[0003] Recently, ceramic materials such as alumina, zirconia, silicon nitride, and silicon carbide are also being used.

These fishing gear parts, for example as fishing line guide parts, are required to have excellent properties such as strength, abrasion resistance, corrosion resistance, and sliding properties. are also being demanded. Particularly from the point of view of decoration, the surfaces of the metals and ceramics are plated with gold.

[0005]

[Problems to be Solved by the Invention] However, although such ceramic materials themselves have high hardness and excellent wear resistance, they generally contain many pores, and due to the presence of these pores on the surface, For example, in parts such as guide rings that come into contact with the fishing line, the fishing line often gets caught due to the edge phenomenon, resulting in line breakage.

[0006] Also, from a decorative point of view, the color tone is unique to the material used, and with the above-mentioned ceramic materials, only white and black tones can be obtained, and it is difficult to achieve a golden tone. Moreover, the presence of pores not only causes deterioration of strength but also causes dullness and cloudiness when mirror finishing is performed.

Furthermore, the hardness of the gold-plated coating itself is very low and it is easily worn, and the coating tends to peel off and lose its color tone, resulting in a lack of durability and furthermore, due to surface roughness. There was a problem that the fishing line easily broke.

[0008]

[Means for Solving the Problems] The present inventor investigated materials that have appropriate mechanical properties, exhibits a golden color, and has a good mirror surface. Materials that contain 50% or more by volume of carbides, nitrides, or carbonitrides of metallic elements and have a porosity of 5% or less are unlikely to be scratched or damaged when used outdoors when used as fishing gear components. It has been found that there is no fear, and the fishing line does not break and has excellent durability.

The present invention will be explained in detail below. The material constituting the fishing gear member of the present invention is mainly composed of carbides, nitrides, or carbonitrides of Group 4a or Group 5a elements of the periodic table, and specifically, TiN. , TiC
, TiCN, TaN, TaC, ZrN, HfN, NbN
etc. Among these metal compounds, some such as TiN can be densified by firing by itself, but most of them contain metals such as Ni and Co as binding metal components at a ratio of 50% by volume or less.

[0010] In terms of composition, TiN, TiC, TiC
The main components are N and TaC, and 50% of these main components can be replaced with carbides, nitrides, or carbonitrides of other elements of group 4a, group 5a, and group 6a of the periodic table.

According to the present invention, it is particularly important that the porosity in the sintered body is 5% or less, particularly 3% or less; if the porosity is greater than 5%, the surface mirror finish property is reduced and The color tone becomes dull, the decorativeness is lost, and the fishing line becomes more likely to break, resulting in a decrease in durability.

[0012] As a method for producing such a sintered body, a powder of the metal carbide, nitride or carbonitride having an average particle size of 50 μm or less, particularly 10 μm or less is used as a raw material powder. Next, these carbides, nitrides, carbonitride powders, or mixtures thereof with iron group powders such as Ni, are ground in an organic solvent such as acetone using a ball mill or vibration mill, and then a predetermined amount of Add a binder such as paraffin. After shaping these powders into a desired shape, the binder is removed, and then firing is performed in vacuum or in various atmospheres with or without pressure. Note that the firing temperature at this time is suitably in the range of 1300 to 2000°C, and the firing time is usually suitable for 0.5 to 5 hours, although it depends on the size of the sample.

[0013]

[Operation] The material of the present invention, which is mainly composed of carbides, nitrides, or carbonitrides of elements of Groups 4a and 5a of the periodic table and has a golden color, is hard and exhibits excellent wear resistance. Furthermore, by reducing the porosity to 5% or less, the fishing line will not break even when rubbed against the fishing line, and durability can be imparted.

[0014]

[Example] Example 1 TiN powder (purity 99% or more, average particle size 2 μm or less)
was ground for 72 hours using zirconia balls in an acetone solvent using a vibration mill. The obtained powder was thoroughly dried to remove the solvent in a drier and then sized. This powder was filled into a graphite mold and fired at 1800° C. for 30 minutes under pressure of 500 kg/cm 2 in a vacuum.

The porosity of the obtained sintered body was measured by the Archimedes method and was found to be 2%. Furthermore, when this sintered body was ground into a predetermined shape and mirror-finished, a golden-yellow mirror surface with no clouding was obtained.

A fishing line guide was also produced using this sintered body, and a heating test was conducted as shown in FIG. In the test, a fishing line 2 was passed through the prepared fishing line guide 1, a weight 3 was lowered vertically, and the fishing line was stretched horizontally from the guide 1 and connected to a cylinder 4. Then, while applying tension to the fishing line with a 3kg weight 3,
The fishing line guide and the fishing line were slid at a speed of 1 reciprocation/3 seconds with a stroke of mm, and the number of strokes until the fishing line broke was measured. As a result, it never broke until 50 times.

Comparative Example 1 The same powder as in Example 1 was used at 1600° C. in vacuum without pressure.
Baked for 1 hour. The porosity of the obtained sintered body was 6%, and when mirror-finished, the color tone became dull gold. Furthermore, as a result of the heating test, thread breakage occurred after 20 cycles, making it impractical.

Example 2 TaC powder (purity 99% or more, average particle size 3 μm) 85
Volume %, Ni powder (purity 99% or more, average particle size 3 μm
After thoroughly mixing 15% by volume (below), pulverization was performed for 24 hours using a WC-Co ball in an acetone solvent using a vibration mill. After the obtained powder was once dried, paraffin was added and granulated. 1,500 kg of this powder is shaped into the specified shape.
It was press-molded under a pressure of /cm2, and the binder was removed in a vacuum. Thereafter, it was fired at a temperature of 1500° C. for 1 hour.

The porosity of the obtained sintered body was 1.5%. In addition, the surface after mirror polishing had a whitish gold color and was in good mirror condition. It also had excellent durability in a heating test of 60 times.

Example 3 TiN powder (purity 99% or more, average particle size 2 μm or less)
90% by volume, Ni powder (purity 99% or more, average particle size 3μ)
m or less) 5% by volume, Cr3C2 powder (purity 99%
After thoroughly mixing 5% by volume (with an average particle size of 7 μm),
Grinding was performed for 24 hours using a WC-Co ball in an acetone solvent in a vibration mill. After the obtained powder was once dried, paraffin was added and granulated. This powder was press-molded into a predetermined shape under a pressure of 1500 kg/cm2, and the binder was removed in a vacuum. Thereafter, it was baked at a temperature of 1450° C. for 1 hour.

The porosity of the obtained sintered body was 0.5%. In addition, the surface after mirror polishing had a slightly reddish gold color and was in good mirror condition. It also had excellent durability in a heating test of 65 times.

Example 4 TiN0.9 C0.1 solid solution powder (purity 99% or more, average particle size 5 μm or less) 93% by volume, Ni powder (purity 99% or more, average particle size 3 μm) 5% by volume, Mo2 C
After thoroughly mixing 2% by volume of powder (purity 99% or higher, average particle size 5 μm), it was pulverized for 72 hours using a cermet ball in an acetone solvent in a vibrating mill. After the obtained powder was once dried, paraffin was added and granulated. This powder was press-molded into a predetermined shape under a pressure of 1500 kg/cm2, and the binder was removed in a vacuum. after that,
It was baked at a temperature of 1450° C. for 1 hour.

The porosity of the obtained sintered body was 1.0%. In addition, the surface after mirror polishing had a slightly reddish gold color and was in good mirror condition. It also had excellent durability in a heating test of 60 times.

[0024]

Effects of the Invention As detailed above, the fishing gear member of the present invention has excellent strength and abrasion resistance, has particularly good sliding properties with the fishing line, does not cause line breakage, and has a mirror-like luster. It has a golden color that can be maintained for a long time.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining a heating test method.

Claims (1)

[Claims] Claim 1: Contains at least 50% by volume of at least one carbide, nitride, or carbonitride selected from metal elements in Groups 4a and 5a of the Periodic Table, and has a porosity of 5% or less. A golden fishing gear part made of sintered material.