JP2010060085A

JP2010060085A - Combination of sliding material

Info

Publication number: JP2010060085A
Application number: JP2008228031A
Authority: JP
Inventors: Fusanobu Hanada; 房宣花田; Hitoshi Yamaguchi; 均山口
Original assignee: Teikoku Piston Ring Co Ltd
Current assignee: Teikoku Piston Ring Co Ltd
Priority date: 2008-09-05
Filing date: 2008-09-05
Publication date: 2010-03-18
Anticipated expiration: 2028-09-05
Also published as: JP5014289B2

Abstract

<P>PROBLEM TO BE SOLVED: To reduce wear of a resin material without applying mirror surface processing and surface treatment to a sliding face of the resin material and without using a wear resistant resin material, in a combination in which the resin material and a metallic material are slid. <P>SOLUTION: In the combination of a sliding material in which the resin material and metallic material are slid, the ten-point average roughness Rz of the sliding face of the metallic material is set to 0.5-6.3 μm. The ten-point average roughness Rz of the sliding face of the resin material is set larger than that of the metallic material and to be 2-18 μm, and the damping valley depth Rvk is set to be a value within a range of 1-6 μm. Sliding between the resin material and the metallic material may be non-lubricant sliding. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、各種産業機器、事務機器、輸送機器などに使用できる摺動材、特にシール性を必要とする摺動材に利用して有効なもの関する。 The present invention relates to a sliding material that can be used for various industrial equipment, office equipment, transportation equipment, and the like, and particularly effective for a sliding material that requires sealing properties.

樹脂材と金属材が摺動する場合、樹脂材の摩耗を低減するためには、樹脂材の表面に鏡面加工を施す、表面に耐摩耗性のある表面処理を施す、あるいは耐摩耗性に優れた樹脂材料を使用する、さらには繊維状、塊状の充填材を添加して材料を補強する等、樹脂材の材料そのものを変更する必要がある。しかしながら、耐摩耗性材料への変更、表面処理の付加や鏡面加工などの特殊加工はコストアップになる。 When resin material and metal material slide, in order to reduce the wear of the resin material, the surface of the resin material is mirror-finished, the surface is treated with wear resistance, or the wear resistance is excellent. It is necessary to change the material of the resin material itself, for example, by using a resin material, or by adding a fibrous or lump filler to reinforce the material. However, changes to wear-resistant materials, addition of surface treatments, and special processing such as mirror finishing increase costs.

特許文献１では、無潤滑条件での樹脂軸受と金属軸の組合せにおいて、１０点平均粗さ（Ｒｚ表示法）で２０〜５００μｍの二次元的に方向性のない凹凸を樹脂軸受表面に設け、金属軸の表面粗さＲｚを約２〜６μｍとすることで、低摩耗、低摩擦、長寿命が図られている。特許文献２では、樹脂摺動材の表面に、算術平均粗さＲａ２〜２０μｍの潤滑油溜まりを設けることにより、油保持量が増大し、潤滑性を向上させることで耐摩耗性の改善が図られている。
特開平７−２５９８６１号公報特開２００７−２２５０１３号公報 In Patent Document 1, in a combination of a resin bearing and a metal shaft under a non-lubricated condition, a two-dimensional non-directional unevenness of 20 to 500 μm is provided on the resin bearing surface with a 10-point average roughness (Rz display method), By setting the surface roughness Rz of the metal shaft to about 2 to 6 μm, low wear, low friction, and long life are achieved. In Patent Document 2, by providing a lubricating oil reservoir with an arithmetic average roughness Ra of 2 to 20 μm on the surface of the resin sliding material, the amount of retained oil is increased and the wear resistance is improved by improving the lubricity. It has been.
Japanese Patent Laid-Open No. 7-259861 Japanese Patent Laid-Open No. 2007-2225013

樹脂材と金属材が摺動する摺動材の組合せにおいて、金属材表面に粗さがある場合には必ず加工による加工目やバリが生じており、これにより、樹脂材の摩耗が多くなる。特許文献１の樹脂材の粗さでは金属材の加工バリ等の突起部により、樹脂材の摩耗が多くなる場合がある。また、特許文献２では樹脂層における窪みの油溜まりの効果は述べられているが、相手金属材の表面を整える効果や、無潤滑でも樹脂材の摩耗低減ができることについては示唆がない。 In the combination of a sliding material in which a resin material and a metal material slide, when the metal material surface is rough, there are always processing marks and burrs due to the processing, and this increases the wear of the resin material. In the roughness of the resin material of Patent Document 1, there is a case where the wear of the resin material is increased due to a projection such as a processing burr of the metal material. Moreover, although the patent document 2 describes the effect of the oil reservoir of the dent in the resin layer, there is no suggestion about the effect of adjusting the surface of the mating metal material or that the wear of the resin material can be reduced without lubrication.

本発明者は、金属材に対する樹脂材の摩耗特性に表面性状が大きな影響を及ぼしていることに着目し、金属材の表面粗さが所定の範囲にあるとき、樹脂材の表面粗さを所定の値とすることで樹脂材の摩耗が低減できることを見出した。 The inventor pays attention to the fact that the surface properties have a great influence on the wear characteristics of the resin material with respect to the metal material. When the surface roughness of the metal material is within a predetermined range, the surface roughness of the resin material is determined to be predetermined. It was found that the wear of the resin material can be reduced by setting the value of.

本発明は上記点からなされたもので、樹脂材と金属材が摺動する組合せにおいて、樹脂材の摺動面に鏡面加工や表面処理をすることなく、また、耐摩耗性樹脂材を使用することもなく、樹脂材の摩耗を低減することを目的とする。 The present invention has been made in view of the above points, and in a combination in which a resin material and a metal material slide, the sliding surface of the resin material is not subjected to mirror finishing or surface treatment, and an abrasion-resistant resin material is used. It aims at reducing abrasion of a resin material, without.

上記課題を解決するために本発明は次の解決手段を採る。すなわち、
本発明は、樹脂材と金属材が摺動する摺動材の組合せにおいて、金属材の摺動面の粗さが１０点平均粗さＲｚ０．５〜６．３μｍであり、樹脂材の摺動面の１０点平均粗さＲｚが金属材よりも大きく、樹脂材の摺動面の粗さを１０点平均粗さＲｚ２〜１８μｍ、減衰谷深さＲｖｋ１〜６μｍの範囲内の値とすることを特徴とする。
１０点平均粗さＲｚは、ＪＩＳＢ０６０１（１９９４）に基づいて求めた値である。減衰谷深さＲｖｋは、ＤＩＮ（ドイツ規格）４７７６に基づいて求めた値である。 In order to solve the above problems, the present invention employs the following means. That is,
In the present invention, in a combination of sliding materials in which a resin material and a metal material slide, the roughness of the sliding surface of the metal material is 10-point average roughness Rz 0.5 to 6.3 μm, and the sliding of the resin material The 10-point average roughness Rz of the surface is larger than that of the metal material, and the roughness of the sliding surface of the resin material is set to a value within the range of 10-point average roughness Rz2 to 18 μm and attenuation valley depth Rvk1 to 6 μm. Features.
The 10-point average roughness Rz is a value obtained based on JIS B 0601 (1994). The attenuation valley depth Rvk is a value obtained based on DIN (German Standard) 4776.

樹脂材と金属材の摺動は無潤滑摺動でよい。 The sliding between the resin material and the metal material may be a non-lubricating sliding.

金属材の摺動面の粗さが１０点平均粗さＲｚ０．５〜６．３μｍであるとき、樹脂材の摺動面に所定の値の粗さを持たせることで、摺動初期の段階で、樹脂材の摺動面の粗さが相手金属材の加工目、加工バリ等の突起部を削り取って速やかに摩滅させ、次いで、樹脂材と金属材の両方に由来する摩耗粉が混合した状態で樹脂材の摺動面の凹部に保持され、これが研磨剤となって、金属材の表面を研磨し、金属材の表面粗さを低減させる。これにより、以降の摺動において、樹脂材の摩耗の進行が緩やかになり、摩耗は低減する。 When the roughness of the sliding surface of the metal material is 10-point average roughness Rz 0.5 to 6.3 μm, the sliding surface of the resin material has a predetermined value of roughness, so that the initial stage of sliding Then, the roughness of the sliding surface of the resin material is scraped off by rapidly removing the protrusions such as the processing marks of the counterpart metal material and processing burrs, and then the wear powder derived from both the resin material and the metal material is mixed. In this state, the resin material is held in the concave portion of the sliding surface, and this serves as an abrasive to polish the surface of the metal material and reduce the surface roughness of the metal material. Thereby, in the subsequent sliding, the progress of wear of the resin material becomes gentle, and wear is reduced.

金属材の摺動面の粗さが６．３μｍＲｚを越えると、金属材の加工目や加工バリ等の樹脂材に対する攻撃性が高くなり、樹脂材の粗さが金属材の加工目や加工バリを摩滅させる効果よりも勝るようになるため、樹脂材の粗さを大きくしても摩耗量低減効果は発現しなくなる。金属材の摺動面の粗さが０．５μｍ未満になると、金属材の加工目や加工バリ等の樹脂材に与える影響が小さいため、樹脂材に粗さを付与しても摩耗量低減効果は発現しなくなる。 When the roughness of the sliding surface of the metal material exceeds 6.3 μm Rz, the attacking property on the resin material such as the metal material processing marks and processing burrs becomes high, and the roughness of the resin material becomes high. Therefore, even if the roughness of the resin material is increased, the effect of reducing the amount of wear does not appear. When the roughness of the sliding surface of the metal material is less than 0.5 μm, the effect on the resin material such as the metal material processing marks and processing burrs is small. No longer develops.

樹脂材の摺動面の粗さが１０点平均粗さＲｚ２μｍ未満、減衰谷深さＲｖｋ１μｍ未満になると、金属材の加工目や加工バリ等を摩滅させる能力や摩耗粉を保持する能力が低下するため摩耗は多くなる。金属材の加工バリ等が大きくなると、対応する樹脂材の摺動面の粗さも大きくする必要があるが、樹脂材の摺動面の粗さが１０点平均粗さＲｚ１８μｍ、減衰谷深さＲｖｋ６μｍを越えると、シール性が悪く、また摩耗も多くなる。 When the roughness of the sliding surface of the resin material is less than 10-point average roughness Rz2 μm and the attenuation valley depth Rvk is less than 1 μm, the ability to wear away the metal material processing burrs, processing burrs, etc., and the ability to retain wear powders are reduced. Therefore, wear increases. When the processing burrs and the like of the metal material increase, it is necessary to increase the roughness of the sliding surface of the corresponding resin material, but the roughness of the sliding surface of the resin material is 10-point average roughness Rz18 μm, attenuation valley depth Rvk6 μm. If it exceeds, the sealing performance is poor and wear increases.

以下、本発明の一実施形態を説明する。 Hereinafter, an embodiment of the present invention will be described.

樹脂材はＰＥＥＫ樹脂を射出成形して得た。得られた樹脂成形体は外径φ５０ｍｍ、内径φ４６ｍｍ、厚さ２ｍｍのリング形状である。得られた樹脂成形体の摺動面にエメリー紙による研磨やバレル研磨により所定の粗さを付与した。その後、２３０℃、３時間のアニール処理を行った。 The resin material was obtained by injection molding PEEK resin. The obtained resin molded body has a ring shape with an outer diameter of φ50 mm, an inner diameter of φ46 mm, and a thickness of 2 mm. A predetermined roughness was imparted to the sliding surface of the obtained resin molding by polishing with emery paper or barrel polishing. Thereafter, annealing was performed at 230 ° C. for 3 hours.

上記樹脂材と金属材との摺動試験を行った。摺動試験はピンオンディスク形の摺動試験機（図８参照）を使用した。上記リング成形体を切り出した樹脂材１を治具２に固定し、樹脂材１の外周部が金属材からなるディスク３上に所定の荷重で押接される。この状態で、ディスク３を垂直軸を中心として一定速度で回転させ、樹脂材１の外周部が摺動する状態で供試した。ディスクの材料はＳ４５Ｃを使用した。ディスクの摺動面にはエメリー紙で所定の粗さを付与した。摺動試験は荷重３０Ｎ、速度１ｍ／ｓ、時間１０分、室温で、無潤滑で行った。樹脂材の摩耗量は試験前後の形状、寸法を測定、比較し、算出した。 A sliding test between the resin material and the metal material was performed. For the sliding test, a pin-on-disk type sliding tester (see FIG. 8) was used. The resin material 1 cut out from the ring molded body is fixed to a jig 2, and the outer peripheral portion of the resin material 1 is pressed against a disk 3 made of a metal material with a predetermined load. In this state, the disk 3 was rotated at a constant speed around the vertical axis, and the test was performed in a state where the outer peripheral portion of the resin material 1 was slid. The disk material was S45C. The sliding surface of the disk was given a predetermined roughness with emery paper. The sliding test was performed without load at 30 N load, 1 m / s speed, 10 minutes time, room temperature. The amount of wear of the resin material was calculated by measuring and comparing the shapes and dimensions before and after the test.

試験に使用した金属材（ディスク）の摺動面の１０点平均粗さＲｚ、及び樹脂材の摺動面の１０点平均粗さＲｚと減衰谷深さＲｖｋを表１〜表６に示し、樹脂材の摩耗結果を図２〜図７に示す。 Tables 1 to 6 show the 10-point average roughness Rz of the sliding surface of the metal material (disk) used in the test, and the 10-point average roughness Rz and the attenuation valley depth Rvk of the sliding surface of the resin material. The abrasion results of the resin material are shown in FIGS.

金属材の摺動面の粗さが０．５〜６．３μｍＲｚの範囲にあり、樹脂材の摺動面の粗さが金属材の粗さよりも大きく、所定の粗さを有している場合に摩耗量低減効果が発現した。 When the roughness of the sliding surface of the metal material is in the range of 0.5 to 6.3 μm Rz, the roughness of the sliding surface of the resin material is larger than the roughness of the metal material, and has a predetermined roughness The effect of reducing the amount of wear was exhibited.

樹脂材の摺動面の粗さ１．１μｍＲｚと３．５μｍＲｚ、金属材の摺動面の粗さ１．３μｍＲｚでの摺動試験において、摺動開始５秒後の金属材の摺動面（図１参照）を観察すると、樹脂材（粗さ３．５μｍＲｚ）と金属材との摺動の場合、金属材の加工目、加工バリ等が摩滅し、金属材の粗さが減少しているのが認められる。これに対して、樹脂材（粗さ１．１μｍＲｚ）と金属材との摺動の場合、金属材の加工目や加工バリの残存が多く、粗さがそれほど減少していない。 In a sliding test with a resin material sliding surface roughness of 1.1 μm Rz and 3.5 μm Rz, and a metal material sliding surface roughness of 1.3 μm Rz, the sliding surface of the metal material 5 seconds after the start of sliding ( When observing FIG. 1), when the resin material (roughness: 3.5 μm Rz) slides with the metal material, the processing marks of the metal material, the processing burr, etc. are worn away, and the roughness of the metal material is reduced. Is allowed. On the other hand, in the case of sliding between the resin material (roughness 1.1 μmRz) and the metal material, the metal material has many processed eyes and processed burrs, and the roughness is not reduced so much.

上記理由を考察すると、樹脂材の摺動面に所定の粗さを持たせると、摺動初期の段階で、樹脂材の摺動面の粗さが金属材の加工目、加工バリ等の突起部を速やかに摩滅させ、次いで、樹脂材と金属材の両方に由来する摩耗粉が混合した状態で樹脂材の摺動面の凹部に保持され、これが研磨剤となって、金属材の表面を研磨し、金属材の表面粗さを低減させる。これにより、以降の摺動において、樹脂材の摩耗の進行が緩やかになり、摩耗が低減すると考えられる。 Considering the above reasons, when the sliding surface of the resin material has a predetermined roughness, the roughness of the sliding surface of the resin material is a projection of a metal material processing line, processing burr, etc. at the initial stage of sliding. The wear part derived from both the resin material and the metal material is mixed and held in the concave portion of the sliding surface of the resin material, and this serves as an abrasive to remove the surface of the metal material. Polishing to reduce the surface roughness of the metal material. Thereby, in subsequent sliding, the progress of wear of the resin material becomes moderate, and it is considered that wear is reduced.

以上より、所定の粗さの樹脂材と金属材の組合せによれば、樹脂材の摺動面に鏡面加工や表面処理をすることなく、また、耐摩耗性樹脂材を使用することもなく、樹脂材の摩耗を低減できる。 From the above, according to the combination of a resin material and a metal material with a predetermined roughness, without performing mirror surface processing or surface treatment on the sliding surface of the resin material, and without using a wear-resistant resin material, The wear of the resin material can be reduced.

樹脂材（粗さ：１．１μｍＲｚ、３．５μｍＲｚ）と金属材（粗さ：１．３μmＲｚ）との５秒摺動後の金属材の摺動面写真である。It is a sliding surface photograph of a metal material after sliding for 5 seconds between a resin material (roughness: 1.1 μmRz, 3.5 μmRz) and a metal material (roughness: 1.3 μmRz). 金属材（粗さ：０．５μｍＲｚ）と樹脂材の摺動試験結果を示すグラフである。It is a graph which shows the sliding test result of a metal material (roughness: 0.5 micrometer Rz) and a resin material. 金属材（粗さ：１．３μｍＲｚ）と樹脂材の摺動試験結果を示すグラフである。It is a graph which shows the sliding test result of a metal material (roughness: 1.3 micrometer Rz) and a resin material. 金属材（粗さ：４．０μｍＲｚ）と樹脂材の摺動試験結果を示すグラフである。It is a graph which shows the sliding test result of a metal material (roughness: 4.0 micrometer Rz) and a resin material. 金属材（粗さ：６．３μｍＲｚ）と樹脂材の摺動試験結果を示すグラフである。It is a graph which shows the sliding test result of a metal material (roughness: 6.3 micrometer Rz) and a resin material. 金属材（粗さ：０．２μｍＲｚ）と樹脂材の摺動試験結果を示すグラフである。It is a graph which shows the sliding test result of a metal material (roughness: 0.2 micrometer Rz) and a resin material. 金属材（粗さ：８．０μｍＲｚ）と樹脂材の摺動試験結果を示すグラフである。It is a graph which shows the sliding test result of a metal material (roughness: 8.0 micrometer Rz) and a resin material. ピンオンディスク形の摺動試験機の構成を示す図である。It is a figure which shows the structure of a pin-on-disk type sliding tester.

符号の説明Explanation of symbols

１樹脂材
２治具
３ディスク（金属材） 1 Resin material 2 Jig 3 Disk (metal material)

Claims

樹脂材と金属材が摺動する摺動材の組合せにおいて、金属材の摺動面の粗さが１０点平均粗さＲｚ０．５〜６．３μｍであり、樹脂材の摺動面の１０点平均粗さＲｚが金属材よりも大きく、樹脂材の摺動面の粗さを１０点平均粗さＲｚ２〜１８μｍ、減衰谷深さＲｖｋ１〜６μｍの範囲内の値とすることを特徴とする摺動材の組合せ。 In the combination of the sliding material on which the resin material and the metal material slide, the roughness of the sliding surface of the metal material is 10-point average roughness Rz 0.5 to 6.3 μm, and 10 points on the sliding surface of the resin material. The average roughness Rz is larger than that of the metal material, and the sliding surface roughness of the resin material is a value within the range of 10-point average roughness Rz2-18 μm and attenuation valley depth Rvk1-6 μm. Combination of moving materials.

樹脂材と金属材の摺動が無潤滑摺動であることを特徴とする請求項１記載の摺動材の組合せ。 2. The combination of sliding materials according to claim 1, wherein the sliding of the resin material and the metal material is a non-lubricating sliding.