JP2014039532A - Ring member, ring member for fishing line, guide for fishing line, fishing rod and ring member for fiber machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ring member, a ring member for a fishing line, a guide for a fishing line, a fishing rod and a ring member for a fiber machine.SOLUTION: There is provided an annular ring member 1 in which, in a sectional view from the inner periphery to the outer periphery, the inner peripheral side of a portion having a maximum width W is formed into a curved surface, and the portion having the maximum width is located to the inner peripheral side in the thickness direction between the inner periphery and the outer periphery, thereby allowing a region where the ring member 1 and a thread-like member slide in contact with each other to be increased. This can prevent vertical pressure applied to the inner peripheral surface 2 of the ring member 1 when the thread-like member slides on the inner peripheral surface 2 of the ring member 1 from being increased, so that abrasion of the thread-like member is suppressed, making the thread-like member hard to be broken.

Description

  The present invention relates to a ring member, a fishing line ring member, a fishing line guide and a fishing rod, and a textile machine ring member.

  In order to hold the thread-like member in a movable state, a ring member provided with a space on the inner peripheral surface side as a conducting portion for passing the thread-like member is used. As an example of this, a fishing line guide provided with a ring member is attached to a fishing rod, and a fishing tool or an eyelet guide that is held movably through a threaded member (fishing line, various fibers, etc.) through a conducting part of the ring member Examples thereof include a ring member for a textile machine used for guiding fibers or winding the fibers on the inner peripheral surface.

  For example, in FIG. 11 of Patent Document 1, in a cross-sectional view along the outer periphery from the inner periphery to the outer periphery of the ring member, the ring member includes a protruding portion that has a circular cross-sectional shape and curves from the vicinity of the central portion toward the inner periphery. Has been proposed.

JP 2010-148523

  However, since the ring member described in Patent Document 1 has a small area in which the thread-like member slides in contact with the ring member, the ring member has an inner circumferential surface that is added when the thread-like member slides on the inner circumferential surface of the ring member. There was a problem that the pressure (surface pressure) in the vertical direction was increased, the wear of the thread member was large, and the thread member was easily cut.

  The present invention has been devised to solve the above-described problems, and provides a ring member in which the thread-like member is less likely to be cut by enlarging a region where the thread-like member can slide to suppress wear of the thread-like member. The purpose is to do.

  The ring member of the present invention is annular, and in a cross-sectional view from the inner periphery to the outer periphery, the inner peripheral side is a curved surface with respect to the portion having the maximum width, and the portion having the maximum width is the inner periphery. It is located in the inner peripheral side in the thickness direction between the outer periphery and the outer periphery.

  The fishing line ring member of the present invention is a member for passing a fishing line, and is characterized by comprising the ring member.

  The fishing line guide of the present invention includes the fishing line ring member, a holding part for holding the fishing line ring member, and an attachment part for attaching to the fishing rod.

  The fishing rod of the present invention is characterized by including the fishing line guide.

  The ring member for a textile machine according to the present invention is a member for allowing fibers to pass through, and is composed of the ring member.

  According to the ring member of the present invention, the annular member has a curved surface on the inner peripheral side with respect to the portion having the maximum width in a cross-sectional view from the inner periphery to the outer periphery, and the portion having the maximum width is provided. By being located on the inner circumference side in the thickness direction between the inner circumference and the outer circumference, the area in which the thread-like member can slide can be increased. As a result, it is possible to suppress an increase in pressure in a direction perpendicular to the inner peripheral surface of the ring member applied when the thread member slides on the inner peripheral surface of the ring member. Is difficult to cut.

  According to the fishing line ring member of the present invention, the fishing line is a member for passing the fishing line, and the fishing line that is conducted to the fishing line ring member is less likely to be cut by wear.

  According to the fishing line guide of the present invention, since the fishing line ring member is provided with a holding part for holding the fishing line ring member and an attaching part for attaching to the fishing rod, the fishing line is attached to the fishing line guide. By conducting, the fishing line is less likely to be cut due to wear.

  According to the fishing rod of the present invention, by providing the fishing line guide, the fishing line is not easily cut during fishing, and fishing can be performed stably for a long time.

  According to the ring member for a textile machine of the present invention, it is a member for passing a fiber, and the chemical fiber or the natural fiber is conducted to the ring member for a textile machine by being made of the ring member. Or natural fiber becomes difficult to cut | disconnect.

An example of the ring member of this embodiment is shown, (a) is a front view, (b) is a cross-sectional view taken along line ZZ ′ shown in (a), and (c) is A in a side view of (b). It is an enlarged view of a part. It is an X-ray diffraction chart which shows an example using the silicon nitride sintered compact as a ring member of this embodiment. It is a schematic diagram for demonstrating the test method of a crushing strength test. It is a top view which shows typically an example of the guide for fishing lines of this embodiment. It is a mimetic diagram showing an example of a fishing rod provided with a fishing line guide of this embodiment. An example of the ring member for textile machines of this embodiment is shown, (a) is a front view, (b) is sectional drawing which shows the cross section in the X-X 'line | wire of (a).

  Hereinafter, an example of the ring member of the present embodiment will be described.

  FIG. 1: shows an example of the ring member of this embodiment, (a) is a front view, (b) is sectional drawing in the ZZ 'line shown to (a), (c) is (a). It is an enlarged view of the A section in sectional drawing.

  As shown in FIGS. 1A to 1C, the ring member 1 of the present embodiment is annular, and the space on the inner peripheral surface 2 side of the annular ring member 1 is a conduction portion 3, and this conduction The direction of the axial direction L of the part 3 is the direction in which the thread-like member (not shown) passes.

For example, when a thread-like member is used as a fishing line and is passed through the conducting part of the ring member and installed on a rod to make a fishing rod, the thread-like member slides strongly with the inner peripheral surface of the ring member, and the thread-like member is worn and cut. There is a case.

  Further, when the ring member of this embodiment is used as a ring member for a textile machine, the thread-like member is also used when the thread-like member is used as a natural fiber or synthetic fiber thread through a conduction portion of the ring member and installed in the textile machine. May slide strongly with the inner peripheral surface of the ring member, and the thread-like member may be worn and cut.

  Therefore, in the ring member 1 of the present embodiment, the inner peripheral side is a curved surface with respect to the portion having the maximum width W in a cross-sectional view from the inner periphery to the outer periphery (hereinafter sometimes simply referred to as a cross-sectional view). And the portion having the maximum width W is located on the inner peripheral side in the thickness direction between the inner periphery and the outer periphery. It should be noted that the portion having the maximum width W in the cross-sectional view is located on the inner peripheral side, the portion having the maximum width W (indicated by a two-dot chain line in FIG. 1C) is the maximum between the inner periphery and the outer periphery. It means that it exists in the inner peripheral side rather than the position of 1/2 of thickness T. In addition, the dashed-dotted line shown by C parallel to the axial direction L represents the position of 1/2 of the maximum thickness T between the inner periphery and the outer periphery. In addition, the ring member 1 has a curved surface with respect to the portion having the maximum width W on the inner peripheral surface side in cross-sectional view (in other words, a curved surface in which both ends of the portion having the maximum width W protrude toward the inner peripheral side. Connected).

  As described above, the ring member 1 has a curved surface on the inner peripheral side with respect to the portion having the maximum width W in the cross-sectional view, and the portion having the maximum width is an inner portion in the thickness direction between the inner periphery and the outer periphery. If it is located on the peripheral side, the curved surface of the inner peripheral surface 2 corresponding to the maximum width W of the ring member 1 tends to be gentle, so that the inner peripheral surface 2 applied when the thread-like member slides on the inner peripheral surface 2. Since the pressure in the direction perpendicular to the pressure (hereinafter simply referred to as surface pressure) is reduced and wear of the thread-like member is suppressed, the thread-like member is hardly cut. Furthermore, since the surface pressure is reduced, the frictional heat generated when the threadlike member slides in contact with the ring member 1 can be suppressed from becoming high temperature. The member is hardly cut.

  Further, when the surface pressure applied when the thread-like member slides on the inner peripheral surface 2 becomes small, the thread-like member easily moves along the inner peripheral surface 2 in the direction perpendicular to the sliding direction, and wear due to the movement. Since the portions of the thread-like member to be dispersed are dispersed, the thread-like member is not easily worn locally, and the thread-like member is less likely to be cut. For the same reason, the part where the frictional heat is generated is also dispersed. Therefore, the part deteriorated by the frictional heat is dispersed, and the thread-like member is less likely to be cut.

  If there are a plurality of positions of the maximum width W of the ring member 1 in the maximum thickness T between the inner periphery and the outer periphery, the position closest to the inner periphery may be set as the position of the maximum width W.

  Further, the inner peripheral surface 2 corresponding to the maximum width W may be a curved surface over the entire inner peripheral surface 2, but at least a portion where the thread-like member slides may be a curved surface.

  When the inner peripheral surface 2 corresponding to the maximum width W of the ring member 1 is a curved surface, the curved surface is preferably as gentle as possible. Here, the curved surface on the inner peripheral surface 2 corresponding to the maximum width W of the ring member 1 corresponds to the maximum width W of the ring member 1 when the maximum width W and the maximum thickness T of the ring member 1 are 5 mm or less, for example. If the difference between the curvature radius R of the curved surface on the inner circumferential surface 2 and the maximum width W (curvature radius R−maximum width W) is −4 mm or more and 2 mm or less, the inner circumference corresponding to the maximum width W of the ring member 1 The curved surface in the surface 2 is gently maintained, and the inner angle r (illustrated in FIG. 1C) of the portion connecting from the end of the portion having the maximum width W of the ring member 1 to the curved surface of the inner peripheral surface 2 is reduced. Since it is possible to suppress the formation of corners, the thread-like member is less likely to be cut. In addition, although it is suitable for the internal peripheral surface 2 to consist of one curved surface, you may form from the several curved surface.

  Further, the radius of curvature R is obtained by taking a photograph of a cross section of the ring member 1 using a commercially available metal microscope or the like, converting the photograph into data, and then using a commercially available image analysis software or the like to use any of five curvature radii R. And the average value of the measured values may be obtained.

The material of the ring member 1 may be appropriately selected from metals, resins, or ceramics according to the thread-like member to be used, but it is preferable to use ceramics from the viewpoints of mechanical properties and wear resistance. Examples of applicable ceramics include oxide ceramics such as alumina (Al ₂ O ₃ ), zirconia (ZrO ₂ ), spinel (MgAl ₂ O ₄ ), silicon carbide (SiC), silicon nitride (Si ₃ N ₄ ), Aluminum nitride (AlN), titanium nitride (TiN), titanium carbide (
There are non-oxide ceramics such as TiC). Furthermore, since the heat dissipation effect of frictional heat increases as the thermal conductivity increases, the ring member 1 is made of a silicon nitride sintered body, a silicon carbide sintered body, or an aluminum nitride sintered body from the viewpoint of thermal conductivity. Is preferred. Among these, a silicon nitride sintered body is more preferable from the viewpoint of mechanical strength and fracture toughness. Moreover, the silicon nitride sintered body used for the ring member 1 of the present embodiment is not particularly limited, but yttrium (Y) is 3% by mass to 12% by mass in terms of Y ₂ O ₃ , aluminum ( If Al) is ₂ % by mass to 5% by mass in terms of Al ₂ O ₃ and silicon (Si) is 2% by mass to 4% by mass in terms of SiO ₂ and the balance is made of silicon nitride, It is more suitable because it can be densified and has high mechanical properties.

The ring member 1 of the present embodiment, when comprised of silicon nitride sintered body, it is preferred to have a crystal _Y 2 SiAlO ₅ N and _Y 4 SiAlO ₈ N in the grain boundary.

The presence of Y ₂ SiAlO ₅ N and Y ₄ SiAlO ₈ N crystals at the grain boundaries can improve the strength of the silicon nitride-based sintered body and have excellent mechanical strength and fracture toughness It can be. Although the reason for this is not clear, the presence of Y ₂ SiAlO ₅ N and Y ₄ SiAlO ₈ N crystals in the grain boundary phase suppresses the grain growth of the main phase silicon nitride crystals, resulting in a fine structure. This is considered to be because the structure can be used and the stress applied to the grain boundary phase is dispersed. Therefore, the ring member 1 made of a silicon nitride sintered body having Y ₂ SiAlO ₅ N and Y ₄ SiAlO ₈ N crystals at the grain boundaries tends to have high crushing strength.

Whether or not Y ₂ SiAlO ₅ N and Y ₄ SiAlO ₈ N crystals exist at the crystal grain boundaries of the silicon nitride sintered body is determined by an X-ray diffractometer (D8 ADVAN manufactured by Bruker AXS).
CE) is used to irradiate the surface of the silicon nitride-based sintered body with CuKα rays, and the angle difference (2θ) between the diffraction direction and incident direction of CuKα rays and the diffraction X-ray intensity are scanned with a detector. It can be confirmed by obtaining a line diffraction chart and identifying it based on the JCPDS card.

FIG. 2 is an X-ray diffraction chart showing an example using a silicon nitride sintered body as a ring member of the present embodiment. In this X-ray diffraction chart, peaks indicating the presence of silicon nitride crystals appear at 2θ = 23.5 °, 27.2 °, 33.6 °, and 36 °. When a Y ₂ SiAlO ₅ N crystal is present, a peak appears in the vicinity of 2θ = 32 ° to 33 ° (eg, 32.6 °), and when a Y ₄ SiAlO ₈ N crystal is present, 2θ = Since peaks appear in the vicinity of 29 ° to 31 ° (for example, 29.4 °, 30.7 °, 31.1 °), they can be identified by confirming each peak. Moreover, the broad peak between the peaks indicating the presence of silicon nitride, Y ₂ SiAlO ₅ N and Y ₄ SiAlO ₈ N indicates that an amorphous phase is present in the silicon nitride sintered body. Show.

In the ring member 1 of the present embodiment, the peak intensity value of the Y ₂ SiAlO ₅ N crystal in the vicinity of 2θ = 32.6 ° in the X-ray diffraction chart of the surface of the silicon nitride sintered body is X, and 2θ = 29.4 °. When the value of the peak intensity in the X-ray diffraction of the nearby Y ₄ SiAlO ₈ N crystal is Y,
If the ratio X / Y is 1.2 or less (excluding 0), the mechanical strength and fracture toughness tend to be further increased, so that the crushing strength of the ring member 1 tends to be further increased. The crushing strength of the ring member 1 can be obtained by a crushing strength test.

FIG. 3 is a schematic diagram for explaining the test method of the crushing strength test. As shown in FIG. 3, the crushing strength test is performed by fixing a DUT (ring member 1) between fixing jigs (ceramic jig 4) and applying a load in the vertical direction of the DUT from above. This is a test for determining the crushing strength by measuring the load P when the DUT is destroyed. By this test, the crushing strength (σr) (unit: MPa) of the DUT is expressed as p (unit: kgf) when the DUT is broken and d (unit: kgf) as the outer diameter of the ring member. mm), where the value of the maximum thickness T is t (unit: mm) and the value of the maximum width W is w (unit: mm), σr = [(p (dt) / (w × t ² )) ] × 9.8
It can obtain | require by the type | formula.

In obtaining the material strength value of the DUT, the JIS R
It can be measured by a four-point bending strength test according to 1601-2008, and the fracture toughness can be measured according to an indenter press-in method (IF method) defined in JIS R 1607-2010.

  In the ring member 1 of the present embodiment, it is preferable that the value of T / W is 0.4 or more and 0.6 or less, where T is the maximum thickness value and W is the maximum width value.

  When the value of T / W is within this range, the value of the maximum width W of the ring member 1 is relatively large, the sliding area of the thread-like member in the ring member can be increased, and the maximum thickness T is relatively Since the curved surface of the inner peripheral surface 2 tends to become smaller and more gentle, the surface pressure generated in the thread-like member is suppressed. Therefore, the thread-like member is hardly worn and the thread-like member is hardly cut. Furthermore, when the T / W value is within this range, the ring member 1 can maintain a high crushing strength.

  Moreover, it is suitable for the ring member 1 of this embodiment to use for a fishing rod as a ring member for fishing lines which is a member for letting a fishing line pass.

  By using the ring member 1 of the present embodiment for a fishing rod as a fishing line ring member for passing a fishing line, the fishing line conducted to the fishing line ring member is less likely to be cut by wear. In this case, as the thread member, a fishing line made of a polymer compound such as polyethylene, nylon, polyvinylidene fluoride, or a fishing line made of a metal wire can be used.

  FIG. 4 is a plan view schematically showing an example of the fishing line guide of the present embodiment.

  The fishing line guide 5 of the present embodiment includes a first penetrating part 6 serving as a holding part for holding a fishing line ring member (ring member 1) and a second penetrating part 7 serving as an attaching part for attaching to a rod. Is provided. The fishing line ring member is fitted and held in the penetrating portion 6. Further, the fishing line ring member can be easily attached to the fishing rod by inserting the fishing rod into the penetrating portion 7 and fixing the fishing rod by a known method. The method for holding the fishing line ring member on the fishing line guide 5 and the method for attaching the fishing line guide 5 to the fishing rod are not limited to the above-described methods, and a known method may be used.

Here, when the fishing line ring member is fitted into the penetrating portion (first penetrating portion 6) and held by the fishing line guide 5 like the fishing line guide 5, the penetrating portion (first penetrating portion) of the fishing line guide 5 is generally used. The surface 8 corresponding to the outer peripheral surface of the fishing line ring member of the part 6) is parallel to the outer peripheral surface of the fishing line ring member. When a fishing rod with such a fishing line guide 5 is dropped on the ground, the impact on the fishing line guide 5 is transmitted to the outer peripheral surface of the fishing line ring member. Therefore, when the outer periphery of the fishing line ring member is bent in the width direction in a cross-sectional view, when an impact is transmitted to the outer peripheral surface of the fishing line ring member, the impact force tends to concentrate on a part. When the fishing line ring member is made of a ceramic sintered body, it tends to be damaged if the impact force is concentrated on a part. Therefore, it is preferable that the outer periphery of the fishing line ring member is easily distributed in impact force from the outside, that is, the fishing ring ring member has an outer periphery parallel to the width direction in a cross-sectional view. A flat portion is preferable because it is difficult to be damaged by an external impact. This is particularly useful when the fishing line ring member is made of a ceramic sintered body. In addition, a flat part is a part (henceforth the flat part 11) corresponding to the code | symbol 11 of the ring member 1 shown in FIG.1 (c).

  Further, in FIG. 1C, when the maximum width of the fishing line ring member is W and the width of the flat portion 11 is W2 in a sectional view, the ratio W2 / W is more preferably 0.4 or more and 0.8 or less. is there. That is, when the ratio W2 / W is within the above range, the impact force is easily dispersed with respect to the impact from the outside. Further, since the width W2 of the flat portion 11 does not become too large, in FIG. 1C, the curvature of the connecting portion 12 between the flat portion 11 and the curved surface that extends from the portion that becomes the maximum width of the fishing line ring member to the outer periphery. When the fishing line ring member is polished and the fishing line ring member is handled when the fishing line ring member is fitted into the first through portion 6 of the fishing line guide 5, defects such as cracks and cracks are generated. Hateful.

  Such a fishing line guide 5 is used for, for example, a fishing rod of a type that winds up a fishing line with a reel or the like to catch a fish. A plurality of fishing line guides 5 are attached from the front end to the rear end of the fishing rod.

  FIG. 5 is a schematic diagram illustrating an example of a fishing rod provided with the fishing line guide of the present embodiment.

  As shown in FIG. 5, the fishing rod 13 of the present embodiment is configured such that each attachment portion of the plurality of fishing line guides 5 is fixed at a predetermined position of the rod portion 15 constituting the fishing rod 13 and is attached to the reel seat of the holding portion 16. The fishing line 16 wound on the attached reel 14 is passed through the conducting portion 3 of the fishing line ring member 1 of the fishing line guide 5 and used. In addition, when using the fishing rod 13 for fishing, attach lures, fishing hooks, weights and floats (not shown), etc. near the tip of the fishing line 16 pulled out from the reel, and hold the holding portion 15 of the fishing rod 13 The fishing line 16 wound around the reel 14 can be sent out by swinging the heel part 15 and using the load of the device. By performing fishing using the fishing rod 13 provided with the fishing line guide 5 of the present embodiment, the fishing line is not easily cut during fishing, and fishing can be performed stably for a long time.

  Moreover, the ring member 1 of this embodiment is suitable not only when using it for a fishing rod, but also when using it as a ring member for textile machines. In addition, the textile machine is a general term for machines that make fibers and textile products, and the textile machine guides the fiber and the fiber-like members such as natural fibers and chemical fibers to the target route, A ring member is used for the purpose of rolling a plurality of thread-like members on the contact surface with the thread-like member.

  6A and 6B show an example of a ring member for a textile machine according to the present embodiment. FIG. 6A is a front view, and FIG. 6B is a cross-sectional view showing a cross section taken along line X-X ′ in FIG.

The textile machine ring member 20 of this embodiment uses the space on the inner peripheral surface side of the textile machine ring member 20 as a conducting portion 3 and conducts a plurality of thread-like members such as natural fibers or chemical fibers to the conducting portion 3. Thus, processing such as guiding the thread-like member or winding the thread-like member can be performed. In a textile machine to which such a fiber machine ring member 20 is applied, thread-like members such as natural fibers and chemical fibers are not easily cut. In addition, the ring member 20 for textile machines shown in FIG. 6 is what is called an eyelet guide.

  When the ring member of this embodiment is used as a fiber machine ring member 20 that is a member for passing fibers, the thread-like member is a natural fiber such as silk, wool, hemp or cotton, or a chemical fiber such as nylon or rayon. Can be used.

  Next, a method for manufacturing the ring member 1 and the fiber machine ring member 20 of the present embodiment made of a silicon nitride sintered body will be described.

First, as starting materials, Si powder (average particle size D50 = 0.5 to 100 μm) and Si ₃ N ₄ powder (α conversion ratio of 50% or more, average particle size D50 = 0.5 to 10 μm) and a sintering aid A certain Y ₂ O ₃ powder (average particle diameter D50 = 0.5-10 μm), Al ₂ O ₃ powder (average particle diameter D50 = 0.5-10 μm) and SiO ₂ powder (average particle diameter D50 = 0.5-10 μm) are prepared. . Thereafter, each powder is weighed in a predetermined amount, and put together with various binders such as polyvinyl alcohol (PVA) and polyethylene glycol (PEG) into a mill such as a rotary mill, a vibration mill, a bead mill, etc., and wet-mixed and pulverized. Make it.

In addition, the mass ratio of Si powder and Si ₃ N ₄ powder is weighed so that Si powder / Si ₃ N ₄ powder ≧ 1. The composition of the silicon nitride sintered body is such that yttrium (Y) is 3% by mass to 12% by mass in terms of Y ₂ O ₃ and aluminum (Al) is 2% by mass to 5% by mass in terms of Al ₂ O _3. In order to contain 2 mass% or more and 4 mass% or less of silicon (Si) in terms of SiO ₂ with the balance being silicon nitride, the mass ratio of Si powder to Si ₃ N ₄ powder is 85: When it is 15, the Y ₂ O ₃ powder and the Al ₂ O ₃ powder are each 4.3.
Weigh so that it is not less than 17% by mass and not more than 17% by mass and not less than 2.9% by mass and not more than 7.2% by mass. The reason why the mass% differs between when each powder is weighed and the content of the silicon nitride sintered body is that the Si powder is nitrided to form silicon nitride. Incidentally, the above-described an example of applying an inexpensive Si powder, but it is also possible to apply the Si ₃ N ₄ powder alone fabricated as a primary raw material the silicon nitride sintered body.

Also, the SiO ₂ powder, the content of in terms of SiO ₂ contained in the Si powder and _Si 3 _{N 4} powder inevitably oxygen together with the amount in terms of SiO ₂ silicon nitride sintered body contains Weigh so that it becomes 2 mass% or more and 4 mass% or less. The content of the silicon nitride sintered body of Y ₂ O ₃ : Al ₂ O ₃ : SiO ₂ is 50 to 66% by mass: 18 to 26% by mass: 16 to 24% by mass. Is preferred.

  Next, the slurry is spray-granulated using a spray granulation dryer (spray dryer) to obtain spherical granules, and then the spherical granules are filled into a mold and a compact is produced by a powder press molding method. . Further, the outer shape may be adjusted by cutting the molded body as necessary.

Next, this molded body was fired at a nitrogen partial pressure of 50 kPa to 1.1 MPa at a temperature of 1000 to 1400 ° C., and the alpha conversion rate of silicon nitride was 90% or more, and then a nitrogen partial pressure of 50 to 300 kPa. By firing at a maximum temperature of 1750 to 1900 ° C., the ring member 1 of this embodiment made of a silicon nitride-based sintered body can be obtained. Then, the presence of crystals of _Y 2 SiAlO ₅ N and _Y 4 SiAlO ₈ N in the grain boundary phase, the cooling rate from the maximum temperature to 1200 ° C. may be set to 10 ° C. / min or less. In addition, it is more preferable that the temperature decrease rate from the maximum temperature to 1200 ° C. is 5 ° C./min or more and 10 ° C./min or less. Further, in the X-ray diffraction chart, the peak intensity of the crystal of Y ₂ SiAlO ₅ N near 2θ = 32.6 ° is X, and the peak intensity of the crystal of Y ₄ SiAlO ₈ N near 2θ = 29.4 ° is Y Then, in order to make the ratio X / Y 1.2 or less, the temperature decreasing rate may be 7 ° C./min or more and 10 ° C./min or less.

  The ring member 1 may be subjected to barrel processing, grinding processing, or centerless processing if it is necessary to deburr, change the outer shape, or adjust the outer dimensions.

Although the details of the manufacturing method of the silicon nitride sintered body have been described above as the ring member 1 of the present embodiment, alumina (Al ₂ O ₃ ), zirconia (ZrO ₂ ), spinel ( It can also be produced using ceramics such as MgAl ₂ O ₄ ), silicon carbide (SiC), aluminum nitride (AlN), titanium nitride (TiN), and titanium carbide (TiC). Moreover, the ring member 1 can also be manufactured by processing a metal plate by cutting or punching using a metal such as stainless steel or titanium.

  Moreover, if it is made to be the same as the manufacturing method of the above-mentioned ring member 1 except changing the shape of a molded object suitably when producing a molded object, the ring member 20 for textile machines can be obtained.

  Examples of the present invention will be specifically described below, but the present invention is not limited to these examples.

  First, a sample of the ring member 1 of the present embodiment and a conventional ring member was prepared, and a sliding test and a crushing strength test using a fishing line were performed using the prepared samples, and the respective results were compared.

  Further, a textile machine ring member 20 and a conventional textile machine ring member were produced, and a sliding test with polyester was performed using the prepared samples, and the results were compared.

  First, a sample of the ring member 1 was prepared.

As starting materials, Si powder (average particle size D50 = 10 μm) and Si ₃ N ₄ powder (α conversion ratio of 50% or more, average particle size D50 = 1 μm) and Y ₂ O ₃ powder (average) as a sintering aid Particle diameter D50 = 1 μm), Al ₂ O ₃ powder (average particle diameter D50 = 1 μm) and SiO ₂ powder (average particle diameter D50 = 1 μm), Si powder 65% by mass, Si ₃ N ₄ powder 15 Mass%, 12 mass% of Y ₂ O ₃ powder, 5 mass% of Al ₂ O ₃ powder and 3 mass% of SiO ₂ powder were weighed. Thereafter, the weighed powder, binder and solvent were put in a rotary mill, mixed and pulverized to obtain a slurry. The slurry is sprayed and granulated using a spray granulation drying device to obtain granules, and the granules are filled in a mold. The outer diameter value is 14.5 mm and the maximum thickness value T is 1.25 mm. The value W of the maximum width is 2.5 mm, and the position where the maximum width is 0.3 m on the inner peripheral side in the cross section than the position of 1/2 of the maximum thickness.
Powder formed from the molded body to be the ring member 1 shown in FIG. 1 at the position m and the circular shaped conventional ring member having an outer diameter value of 14.5 mm and a cross-sectional diameter value of 1.25 mm. Obtained by press molding. These compacts were fired at a nitrogen partial pressure of 120 kPa and a temperature of 1300 ° C., and after the silicon nitride alpha conversion rate was 90% or higher, the nitrogen partial pressure of 120 kPa was maintained at a maximum temperature of 1750 ° C. for 5 hours. did. Thereafter, the temperature was lowered from the maximum temperature to 1200 ° C. at a rate of 15 ° C./min and cooled to room temperature, so that the sample No. 1 as a sample of the ring member 1 of this embodiment was cooled. 1 and sample No. 1 which is a sample of a conventional ring member. 2 was produced.

Further, 99.7% by mass of Al ₂ O ₃ powder, 0.1% by mass of MgO powder and 0.2% by mass of SiO ₂ powder were weighed, put into a rotary mill together with a binder and a solvent, mixed and pulverized to obtain a slurry. Then, the slurry is spray-granulated using a spray granulation drying apparatus to obtain granules, and then the granules are filled in a mold, and after sintering, the outer diameter value is 14.5 mm, the maximum thickness value T The ring shown in FIG. 1 has a maximum width W of 2.5 mm and a position where the maximum width is 0.3 mm on the inner peripheral side of the position of 1/2 of the maximum thickness in the cross section. A molded body to be a member 1 and a molded body to be a conventional ring member having a diameter of 1.25 mm in cross-sectional view with an outer diameter value of 14.5 mm after sintering by a powder press molding method. Obtained. By firing these molded bodies at 1620 ° C., sample No. 1 which is the ring member 1 of the present embodiment made of an alumina sintered body. 3 and a conventional ring member, sample No. 4 was produced.

  Next, the prepared sample No. A sliding test with a fishing line was conducted for 1-4.

  Here, the sliding test means that a commercially available nylon fishing line is passed through the conducting part of the sample ring member, a force of 3 kgf is applied to the fishing line, and the fishing line is brought into contact with the inner peripheral surface of the ring member. It was reciprocated at a speed of / min, and the number of reciprocations was tested to see if the fishing line was cut.

As a result, the sample No. which is the ring member 1 of the present embodiment. No. 1 does not break the fishing line even after 300 reciprocations. The fishing line broke after 3 273 round trips. On the other hand, Sample No. which is a conventional ring member. 2 reciprocates 180 times, sample no. The fishing line broke after 4 171 round trips.

  That is, in a cross-sectional view from the inner periphery to the outer periphery, the inner peripheral side is a curved surface with respect to the portion having the maximum width W, and the portion having the maximum width W is the inner periphery and the outer periphery. It was found that if the ring member 1 located on the inner peripheral side in the thickness direction is used, the thread-like member is hardly cut. Further, it was found that when the ring member 1 is made of silicon nitride, the thread-like member is more difficult to cut.

  In addition, the sample No. 1 made of a silicon nitride sintered body was used. No. 1 is a sample No. 1 made of an alumina sintered body. Compared to 3, it was confirmed that the fishing line was more difficult to cut.

  Next, a sample of the ring member 20 for a textile machine and a sample of a ring member for a conventional textile machine were produced.

First, the sample No. Sample No. 1 made of a silicon nitride sintered body, which is a ring member 20 for a textile machine, was manufactured by the same manufacturing method as in No. 1. 5 and a sample No. consisting of an alumina sintered body. 6 was produced. However, Sample No. The dimensions of No. 5 and No. 6 are as follows: diameter L1 shown in FIG. 6 is 12.1 mm, diameter L2 is 8.9 mm, maximum thickness T is 3.15 mm, maximum width W is 9.4 mm, and width W3 is 2.8 mm.
And the position having the maximum width is 0.4 on the inner circumferential side of the position of the half thickness of the maximum thickness in the cross section.
The position was set to mm. Further, a sample No. 1 composed of a silicon nitride sintered body of a conventional ring member for a textile machine. 7 and an alumina sintered body, sample No. 8 is a sample no. 5 and no. 6 was produced. However, Sample No. 7 and sample no. The position having the maximum width of 8 was set to a position of ½ of the maximum thickness in the cross section, and a flat portion parallel to the maximum width direction in the cross section was provided on the inner peripheral surface.

  And sample no. A sliding test with a commercially available polyester yarn was performed on 5-8. Sample No. was changed except that the fishing line was changed to a polyester line. The conditions were the same as the sliding test performed in 1-4.

As a result, sample No. which is the ring member 20 for textile machinery of the present embodiment. No. 5 does not break the polyester yarn even after 300 reciprocations. No. 6 had a polyester yarn cut after 263 round trips. On the other hand, Sample No., which is a conventional ring member for textile machinery. 7 is 166 reciprocations, sample no.
In No. 8, the polyester yarn was broken after 158 reciprocations.

That is, in a cross-sectional view from the inner periphery to the outer periphery, the inner peripheral side is a curved surface with respect to the portion having the maximum width W, and the portion having the maximum width W is the inner periphery and the outer periphery. It was found that when the ring member 20 for a textile machine located on the inner peripheral side in the thickness direction is used, the thread-like member is hardly cut. Furthermore, it was found that when the fiber machine ring member 20 is also made of silicon nitride, the thread-like member is more difficult to cut.

Except that the temperature lowering rate from the maximum temperature to 1200 ° C. was 10 ° C./min in the firing step, the sample No. Sample No. 1 of the ring member 1 made of silicon nitride by the same production method as in FIG. 5 was produced. Sample No. 1 and sample no. 5 was analyzed using an X-ray diffractometer (D8 ADVANCE manufactured by Bruker AXS), and the presence of Y ₂ SiAlO ₅ N and Y ₄ SiAlO ₈ N crystals was confirmed. The result is Sample No. 5 had crystals of Y ₂ SiAlO ₅ N and Y ₄ SiAlO ₈ N. No crystal of Y ₂ SiAlO ₅ N and Y ₄ SiAlO ₈ N was present in 1.

  Next, sample No. 1 and sample no. A crushing strength test was conducted on No. 5.

As a result of the crushing strength test, sample No. 2 having crystals of Y ₂ SiAlO ₅ N and Y ₄ SiAlO ₈ N were obtained. Sample No. 5 without Y ₂ SiAlO ₅ N and Y ₄ SiAlO ₈ N crystals. Compared to 1, it was found that the crushing strength was 15% higher.

That is, it was found that the ring member 1 was made of a silicon nitride sintered body and had Y ₂ SiAlO ₅ N and Y ₄ SiAlO ₈ N crystals at the grain boundaries, and thus the ring member 1 was hard to cut the fishing line and had higher crushing strength.

Sample No. except that the temperature drop rate from the maximum temperature to 1200 ° C. was changed as shown in Table 1 in the firing process. The sample No. 5 was manufactured by the same manufacturing method as in No. 5. 6-9 were produced. Sample No. 6 to 9 were analyzed using an X-ray diffractometer (D8 ADVANCE manufactured by Bruker AXS) to obtain an X-ray diffraction chart. Y ₂ SiAlO ₅ N crystals around 2θ = 32.6 ° in this X-ray diffraction chart When the peak intensity value is X and the peak intensity value in the X-ray diffraction of the Y ₄ SiAlO ₈ N crystal near 2θ = 29.4 ° is Y, the ratio X / Y was determined. Furthermore, sample no. The crushing strength test was conducted on 6-9. The results are shown in Table 1.

  From the results of Table 1, sample No. with a ratio X / Y of 1.2 or less. Nos. 6 to 8 have a crushing strength of 680 MPa or more. Compared with 9, it showed a tendency for the crushing strength to increase.

That is, the value of the peak intensity of the Y ₂ SiAlO ₅ N crystal near 2θ = 32.6 ° in the X-ray diffraction chart is X, and the value of the peak intensity in the X-ray diffraction of the Y ₄ SiAlO ₈ N crystal near 2θ = 29.4 °. It was found that when the ratio X / Y is 1.2 or less, the ring member 1 has particularly high crushing strength.

  Next, the ratio T / W of the maximum thickness T and the maximum width W shown in FIG. 1 when viewed in cross section is the value shown in Table 1, and the position where the maximum width is 1 is the maximum thickness in the cross section. Sample No. 2 was used except that it was located at a position of 1/4 of the maximum thickness on the inner peripheral side of the position of / 2. In the same manufacturing method as that of Sample No. 10-18 were produced.

In addition, after sintering, sample No. 1 was obtained except that the molded body was a conventional ring member having a circular shape with an outer diameter of 14.5 mm and a diameter of 1.2 mm in cross-section. The sample No. 5 was manufactured by the same manufacturing method as in No. 5. 19 was produced. And said sample No. A sliding test and a crushing strength test were performed on 10-19. The results are shown in Table 2.

From the results in Table 2, the sample No. which is the ring member 1 of this embodiment is shown. Samples Nos. 6 to 14 are sample Nos. 1 and 2 which are conventional ring members. Compared to 15, it was confirmed that the fishing line was cut more frequently in the sliding test and the fishing line was more difficult to cut. Furthermore, the sample No. T / W is within the range of 0.4 to 0.6. Samples Nos. 11 to 13 and 15 to 18 have T / W values outside the above range. Compared with 10 and 14, it was confirmed that the number of reciprocations until the fishing line was cut in the sliding test was particularly high at 300 times or more, and the crushing strength was 700 MPa or more, which was particularly high.

  That is, it was found that the ring member 1 having a T / W value in the range of 0.4 or more and 0.6 or less is less likely to cut the fishing line and can maintain high crushing strength.

1: Ring member (ring member for fishing line)
2: Inner peripheral surface 3: Conducting portion 5: Fishing line guide
11: Flat part
13: Fishing rod
20: Ring member for textile machinery

Claims (10)

  It is annular and has a curved surface on the inner peripheral side with respect to a portion having the maximum width in a sectional view from the inner periphery to the outer periphery, and the portion having the maximum width is a thickness between the inner periphery and the outer periphery. A ring member characterized by being located on the inner peripheral side in the direction.   The ring member according to claim 1, comprising a silicon nitride sintered body. The ring member according to claim 2, wherein the silicon nitride sintered body has crystals of Y ₂ SiAlO ₅ N and Y ₄ SiAlO ₈ N at grain boundaries. In the X-ray diffraction chart of the surface of the silicon nitride sintered body, the peak intensity value of Y ₂ SiAlO ₅ N crystal around 2θ = 32.6 ° is X, and Y ₄ SiAlO ₈ near 2θ = 29.4 °. The ring member according to claim 3, wherein the ratio X / Y is 1.2 or less (excluding 0), where Y is the peak intensity value in the X-ray diffraction of the N crystal.   5. The T / W value is not less than 0.4 and not more than 0.6 when the maximum thickness value is T and the maximum width value is W in the cross-sectional view. The ring member according to 1.   A fishing line ring member comprising a ring member according to any one of claims 1 to 5 for passing a fishing line.   The fishing ring ring member according to claim 6, wherein the outer periphery has a flat portion parallel to the width direction in the cross-sectional view.   A fishing line guide comprising the fishing line ring member according to claim 6, a holding part for holding the fishing line ring member, and an attaching part for attaching to the fishing rod.   A fishing rod comprising the fishing line guide according to claim 8.   A ring member for a textile machine, comprising a ring member according to any one of claims 1 to 5, which is a member for passing fibers.

Images