• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SLIDING ELEMENT AND SLIDING MATERIAL COMPOSITION The present invention relates to an object of the present invention is to provide a sliding element suitable for a soft coupling element of low hardness. The present invention relates to a sliding element for sliding with a coupling element having a ferrite phase on at least one surface thereof, the sliding element including a coating layer containing a binding resin, molybdenum disulphide, and particles of hard substances.
    公开号:BR112014005643B1
    申请号:R112014005643-9
    申请日:2012-09-13
    公开日:2021-05-25
    发明作者:Takashi Tomikawa；Toshiyuki Chitose
    申请人:Taiho Kogyo Co., Ltd.；
    IPC主号:
    专利说明:

    technical field
    [0001] The present invention relates to a sliding element and a composition of sliding material suitable for a smooth coupling element. Background Technique
    [0002] Conventionally, for the purpose of providing lubrication for sliding parts of machines, a surface of each sliding element is coated with a composition of sliding material, which is to function as a lubricant film in each sliding section. For this reason, it is necessary that the sliding material composition of this type should be a lubricant film that has low friction characteristics, excellent wear resistance so as not to wear out even after a long period of use, and good in fitness. with a coupling element.
    [0003] A glidant material composition containing a wear resistant agent, a solid lubricant, and a resin binder is known as the conventional glidant material composition (see Patent Documents 1 to 3). List of Patent Literature citations. Patent Document 1: Japanese Patent no. 4004631 Patent Document 2: JP-A-H 10-37962 Patent Document 3: JP-A- 2002-53883 Description of the Invention Problems to be solved through the Invention
    [0004] In the conventional techniques described above, the coupling elements to couple with the sliding elements are coupling elements that have a high hardness characteristic that is obtained by being subjected to heat treatment such as cooling treatment or heat treatment. tempering and conventional slip material compositions are limited to the slip material compositions configured under the presumption that the coupling elements are of the high hardness type. However, in recent years, the development of shafts that are not subjected to hardening treatment has advanced in order to lower manufacturing costs and, for this reason, there has been a high demand for suitable sliding elements for the coupling elements that have a lower hardness. An objective of the present invention is to provide a sliding element that satisfies this demand. Means for Solving the Problem.
    [0005] The present invention relates to a gliding element and a gliding material composition described further below in this patent application. [1] A sliding element for sliding with a coupling element having a ferrite phase on at least one surface thereof, the sliding element comprising: a coating layer comprising a binding resin, molybdenum disulfide, and particles of hard substances. [2] The slip element according to [1] described above, in which the hard substance particles have an average particle diameter that is 0.5 to 10 times as large as an arithmetic average surface roughness Ra of a sliding surface of the coupling element. [3] The slip element according to [1] or [2] described above in which the hard substance particles have a massive shape. [4] The slip element according to any one of the above-described [1] to [3] in which the hard substance particles have a hardness equal to or greater than 2 times as great as the hardness of the coupling element. [5] A glide material composition to be used in a glide element to glide with a coupling element having a ferrite phase on at least one surface thereof, the glide material composition comprising: a resin binder, molybdenum disulfide and hard substance particles. Advantageous Effects of the Invention.
    [0006] According to the present invention, the composition of sliding material and the sliding element involving a rough art of the coupling element having the ferrite phase through sliding, thereby exhibiting excellent wear resistance and harnessing the resistance can be provided. Brief Description of Drawings.
    [0007] FIG. 1 is a wear graph showing the relationships between the particle diameters of the hard substance particles and the surface roughness of the coupled shafts after wear tests.
    [0008] FIG. 2 is a graph showing the relationships between the particle diameters of the hard substance particles and the depth of wear of the specimens (bearings) after wear tests. Best Way to Carry Out the Invention.
    [0009] The composition of the slip material according to the present invention (hereinafter, also referred to as the "composition according to the present invention") contains a binder resin, molybdenum disulfide, and the hard substance particles.
    [00010] The binding resin defines a material that binds the composition according to the present invention, and is preferably at least one type of resin selected from the group consisting of a polyamide-imide resin (PAI ), a polyamide resin, a phenolic resin, a polyacetal resin, a polyether ketone resin, and a polyphenylene sulfide resin. Among these resins, polyamide-imide resin (PAI) is preferably used from the point of view of wear resistance.
    [00011] The composition according to the present invention contains particles of hard substance. A ferrite phase is present in a coupling element (also referred to as "the coupling element") such as a forged shaft and a cast shaft that are not subjected to a hardening treatment such as a quench treatment. The hardness of the coupling element that has this ferrite phase is from HV 200 to 300 Vickers hardness, which is low and for this reason it is likely to form spikes after the abrasive finish. A surface of a sliding bearing is softer than the ferrite phase, which is likely to cause abrasive wear to the tips. In order to solve this problem, an action to cut the tips formed in the ferrite stage to smooth the surface of the coupling element, as is called an enveloping effect, is imparted through the particles of hard substance that are contained in the composition. of the slip material, whereby wear resistance and seizing resistance are improved in the present invention.
    [00012] It is necessary to adjust the particle diameter of particles of hard substance according to the roughness of the surface of the coupling element in order to exert an enveloping effect. In this context, if a hard substance that is rough with respect to the roughness of the rough surface, the hard substance adversely attacks the coupling element. On the other hand, if a hard substance that is too small is added, the enveloping effect cannot be obtained. Therefore, the average particle size (mode diameter) of the hard substance particles can preferably be from 0.5 to 10 times, and preferably specifies from 2 to 5 times as large as an arithmetic mean roughness (Ra) of a sliding surface of the coupling element.
    [00013] It is to be noted that when the surface roughness is specified by an average roughness of ten points (Rz), the following relational expression is to be followed.
    [00014] Arithmetic mean of mean roughness (Ra) = 1/2 to 1/3 x ten points of mean roughness (Rz).
    [00015] Furthermore, the shape of the hard material particles is preferably a massive shape or a spherical shape, and the massive shape is preferably specific because the hard material particles in the massive shape are higher in effect of wrapping that hard material particles in spherical shape. In this context, massive shape means an irregular shape, which contains substantially no projections equal to or less than 90°, and excludes shapes such as spherical and sharp angular shapes that can be formed through processing. It should be noted that the hard substance particles in sharp angle form could attack the coupling element and therefore are not preferable.
    [00016] The hardness of hard material particles is not limited, as long as the hard material particles have a sufficient hardness against the coupling element that has the ferrite phase, however, because the hardness of the coupling component is HV 200 to 300, the hardness of the hard material particles is preferably equal to or greater than HV 600, which is equal to or greater than twice as large as the hardness of the coupling component, and preferably specifies equal or greater than HV 800. It should be noted that hardness means Vickers hardness (the same will apply hereafter).
    [00017] The type of hard substance particles is not specifically limited. However, from the point of view of satisfying the above hardness, Fe3P (about HV 800), Al2O3 (HV1500 or more), SiC (HV 2000 or more), AlN (HV 1000 or more) and the like can be used from preference.
    [00018] Furthermore, the content of the hard substance particles in the composition according to the present invention is preferably 0.1 to 5% by volume, and specifically preferably from 1 to 4% by volume. When the content within a range above, the hard substance particles have an enveloping effect with the deterioration of the coupling element being made low.
    [00019] Molybdenum disulfide (MoS2) works as a solid lubricant to impart wear resistance in the composition according to the present invention. Through the addition of solid lubricant, the envelopment by the hard substance particles becomes fine. Because especially molybdenum disulphide exhibits an excellent lubricating effect on oil more than other solid lubricants, this effect can be especially exerted on oil.
    [00020] The content of molybdenum disulfide in the composition according to the present invention is from 30 to 70% by volume, and preferably from 35 to 60% by volume. When the molybdenum disulphide content is within the above range, a sufficient lubricating effect can be obtained.
    [00021] It should be noted that molybdenum disulfide preferably has an average particle diameter equal to or less than 5 µm, and preferably specific equal to or less than 3 µm.
    [00022] The composition according to the present invention may contain a solid lubricant other than molybdenum disulfide.
    [00023] The other solid lubricant is preferably at least one type of solid lubricant selected from the group consisting of graphite, polytetrafluoroethylene (PTFE), tungsten disulfide, mica, boron nitride, graphite fluoride and fullerene. The content of these solid lubricants is preferably 5 to 35% by volume from the point of view that these solid lubricants obtain a lubricating effect especially when the oil runs out as an auxiliary for molybdenum disulphide.
    [00024] The composition according to the present invention may further contain an inorganic additive, and the inorganic additive is preferably at least one type of inorganic additive selected from the group consisting of calcium carbonate, barium sulfate , and calcium phosphate. Furthermore, from the point of view of wear resistance, the content of inorganic additive in the composition is preferably 5 to 10% by volume.
    [00025] The composition of the sliding material according to the present invention can be used for a coating layer of a surface of a base element of the sliding element. The composition of the sliding material according to the present invention is preferably used for coating on the sliding surface, especially when a sliding coupling element has a ferrite phase, at least on its surface. Specific examples of the coupling element described above include a forged shaft that is not hardened, a spherical graphite cast iron shaft that is not hardened, and a forged shaft that is not nitrided.
    [00026] The slip element according to the present invention includes a base element, and a coating layer provided on the base element, and the coating layer is formed from the above-described slip material composition according to with the present invention.
    [00027] The material for the base element of the sliding element according to the present invention is not specifically limited. However, it is preferable to select the material from the group consisting of steel, stainless steel, cast iron, copper, copper alloy, aluminum, aluminum alloy, rubber, plastics and ceramics. Furthermore, the shape of the base element is not specifically limited, and may be of a plate-shaped or a tube-shape. Furthermore, it is preferable that the base member includes a steel backing such as stainless steel and an alloy layer disposed on the steel backing and containing aluminum alloy, copper alloy or the like.
    [00028] As the method for forming the coating layer, for example, a method for mixing the composition according to the present invention with a solvent of a binder resin, forming a film of the mixture on the surface of the element base with the use of a known method such as spray coating, and then firing the film at a firing temperature of the binding resin can be applied. Furthermore, the surface of the base element can be subjected to surface roughness treatment before the surface is coated, or an adhesion layer can be provided between the base element and the coating layer, for the purpose of reinforcing the surface. -clothing. The thickness of the coating layer is preferably from 5 to 30 µm. The surface roughness of the coating layer is not particularly limited, but is preferably 0.3 to 3 µmRa.
    [00029] The lubrication conditions of the sliding element according to the present invention is not specifically limited, and any conditions of oil lubrication, grease lubrication or no lubrication can be used. Examples.
    [00030] Bimetallic-based aluminum elements (about 1.5 mm thick (0.2 mm thick in aluminum alloy layers)) were subjected to sandblasting treatment and then the compositions shown in Table 1 were spray coated to have a thickness of 10 µm, and coating layers were formed. After the formation of the films by spray coating, the elements were fired at 200°C, and in this way, samples were produced. The materials used are as follows. It is to be noted that the remaining lubricants other than the solid lubricants and the remaining hard substances were adjusted using binder resins such that each composition was 100% by volume in total. Binding resin Polyamide imide resin (PAI): manufactured by HITACHI CHEMICAL CO., LDT. Solid lubricant Molybdenum disulphide: manufactured by SUMICO LUBRICANT CO., LTD., mean particle diameter 2 µm. Graphite manufactured by SUMICO LUBRICANT CO., LTD., 2 µm average particle diameter. Tungsten disulfide: manufactured by SUMICO LUBRICANT CO., LTD., mean particle diameter of 2 µm. Hard substance Al2O3 particles: manufactured by FUJIMI INCORPORATED CO., LTD., all in massive form SiC: manufactured by FUJIMI INCORPORATED CO., LTD., all in massive form Fe3P: manufactured by FUKUDA METAL FOIL & POWDER CO., LTD. , all in massive form AlN: manufactured by Toyo Aluminum K.K., all in massive form.
    [00031] The samples (bearings) of the Examples and Comparative Examples were subjected to wear tests with the use of cast shafts or forged shafts that had ferrite phases on the sliding surfaces of them as the coupling elements, and the roughness of the surface of the slip surfaces of the coupling shafts before and after the tests, and the depth of wear of the slip surfaces of the samples after the tests were measured. The results are shown in Table 1. Furthermore, with respect to the Examples, the relationships between the particle diameters of the particles of hard substances and the roughness of the surfaces of the coupling shafts after the tests are shown in FIG. 1, and the relationships between the particle diameters of the hard substance particles and the wear depth of the specimens (bearings) after testing are shown in FIG. 2. It should be noted that each coupling element was subjected to a hardening treatment such as quenching and had a hardness of HV 200 to 300. (wear test)
    [00032] The wear tests were performed using a partial contact wear tester under the following conditions: The number of revolutions: 0 rpm Cycle Test (1 minute hold) ^ 1200 rpm (retention of 1 minute) ^ 0 rpm (1 minute hold) Lubricating oil: 0W-20 Lubricating temperature: 100°C Load: 4.41 kN Test time: 100 hours (Measurement of surface roughness) The arithmetic mean of roughness ( Ra) was measured according to JIS B 061 (2001). (Measurement of wear depth) The thickness of the lining layers of the specimens (bearings) was measured before and after the tests, and the wear depth was calculated from those values. [Table 1]

    [00033] It is evident from Table 1 that all examples are in good lubrication states. On the other hand, it is determined from the comparison between Comparative Example 1 and Comparative Example 4, and Example 2, that the depth of wear of the bearings is increased by containing the particles of hard substance, but not containing molybdenum disulfide. Similar trends are also confirmed from the comparison between Comparative Example 2 and Example 7, and the comparison of Comparative Example 3 and Example 12.
    [00034] In addition, it is determined from the comparisons of Comparative Example 5 and Example 7, and from the comparison of Comparative Example 6 and Example 5 that the depth of wear of the bearings becomes greater by containing molybdenum disulfide, however not contain the hard substance particles.
    [00035] Furthermore, it is evident from Table 1, and FIG. 1 and FIG. 2 that if the mean particle diameters of the hard substance particles are 0.5 to 10 times greater than the arithmetic mean surface roughness Ra of the sliding surfaces of the coupling elements (the roughness of the shaft before testing), both the shaft roughness and the depth of wear of the bearings after the tests can be reduced, whereby wrapping effects can be exerted, which is preferable.
    [00036] The present invention has been described in detail with reference to the specific embodiment. However, it will be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the present invention. The present patent application is based on the Japanese Patent Application filed September 13, 2011 (P2011-199559), and the contents thereof are incorporated herein into this application by reference.
    权利要求:
    Claims (3)
    [0001]
    1. Sliding element for sliding with a coupling element having a ferrite phase on at least one surface thereof, the sliding element comprising: a coating layer comprising a binding resin, molybdenum disulfide and hard substance particles, characterized by: the hard substance particles have a Vickers hardness equal to or greater than HV 600, a molybdenum disulfide content in the composition is 30 to 70% by volume, and the hard substance particles have a massive shape, in which form massive means an irregular shape that does not substantially contain projections equal to or less than 90° and excludes shapes such as spherical and acute-angle shapes that can be formed by processing.
    [0002]
    Sliding element according to claim 1, wherein the hard substance particles have a hardness equal to or greater than 2 times as large as a hardness of the coupling element.
    [0003]
    3. A glide material composition to be used in a glide element to glide with a coupling element having a ferrite phase on at least one surface thereof, the glide material composition comprising: a binder resin; molybdenum disulfide; and hard substance particles, characterized by: the hard substance particles have a Vickers hardness equal to or greater than HV 600, a molybdenum disulfide content in the composition is 30 to 70% by volume, and the hard substance particles have a solid shape, where solid shape means an irregular shape that contains substantially no projections equal to or less than 90° and excludes shapes such as spherical and acute-angle shapes that can be formed by processing.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112014005643B1|2021-05-25|sliding element and sliding material composition
    BR112014006606B1|2019-10-15|SYSTEM UNDERSTANDING A SLIDING MEMBER AND A COUPLING MEMBER
    BRPI0705751B1|2016-10-18|double layer lubrication coating composition, double layer lubrication coating and piston having the same coating
    US7258926B2|2007-08-21|Solid lubricant and sliding members
    BR112013013370B1|2020-11-03|sliding element, in particular, piston ring with a coating
    Gheisari et al.2018|Three-body abrasive wear of hard coatings: Effects of hardness and roughness
    Pejaković et al.2015|Frictional behaviour of imidazolium sulfate ionic liquid additives under mixed slide‐to‐roll conditions: Part 1—Variation of mixtures with identical weight ratio of ionic liquid additive
    JP2013204807A|2013-10-07|Sliding bearing
    EP3315806A1|2018-05-02|Bearing material, bearing and method
    Wu et al.2011|Antifriction and wear characteristics of electrolessly-deposited Ni–P with PTFE composites
    Zhu et al.2017|Tribological performance of three surface-modified piston rings matched with chromium-plated cylinder liner
    WO2012081309A1|2012-06-21|Sliding mechanism and friction reduction method for same
    JP4545376B2|2010-09-15|Method for treating ferrous alloy components to improve friction properties without loss of hardness or deformation
    Stolarski et al.2012|Tribological performance of PTFE–metal binary coatings in rolling/sliding contact
    WO2019124389A1|2019-06-27|Piston ring for internal combustion engine
    Kao et al.2013|Tribological properties of the synthesis of Cu-BTA composite nanoparticles via the thermal decomposition application in lubricants
    JP2008259965A|2008-10-30|Surface treatment method and slide member
    Sevostyanov et al.2015|Tribological behavior of fluoroparaffin coatings
    Rajkumar et al.2016|A Comparative Study on the Brass-Steel Tribo-Pair under Dry and Lubricated Sliding Conditions
    Sinha2018|Development of tribological polymeric coatings
    BRPI0703141B1|2018-10-16|process of obtaining an intermetallic compound.
    Szeptycka et al.2012|TRIBOCORROSION EVALUATION OF NI-PTFE ELECTROCHEMICAL COATINGS
    同族专利:
    公开号 | 公开日
    KR20140045586A|2014-04-16|
    JP5941472B2|2016-06-29|
    CN103797256A|2014-05-14|
    CN103797256B|2017-05-31|
    EP2757277B1|2018-06-06|
    EP2757277A4|2015-06-03|
    BR112014005643A2|2017-03-28|
    KR101639549B1|2016-07-13|
    JPWO2013039177A1|2015-03-26|
    EP2757277A1|2014-07-23|
    US9303230B2|2016-04-05|
    WO2013039177A1|2013-03-21|
    KR20150144821A|2015-12-28|
    US20150018255A1|2015-01-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS6138759B2|1979-03-12|1986-08-30|Taiho Kogyo Co Ltd|
    JP2735673B2|1990-04-23|1998-04-02|沖電気工業株式会社|PN pattern detector|
    JP3245064B2|1996-07-18|2002-01-07|大豊工業株式会社|Plain bearing|
    KR100369456B1|1998-02-24|2003-01-24|타이호 코교 가부시끼가이샤|Sliding bearing for internal combustion enging|
    JP4004631B2|1998-03-27|2007-11-07|大豊工業株式会社|Coating film material for sliding valve lifter and valve lifter using the same|
    JP4507028B2|1999-07-23|2010-07-21|株式会社リケン|Coating composition for sliding member and piston ring for internal combustion engine|
    JP2002053883A|2000-08-07|2002-02-19|Toyota Motor Corp|Composition for sliding member|
    JP2003254014A|2002-03-01|2003-09-10|Toyota Motor Corp|Sliding material|
    JP4151379B2|2002-10-29|2008-09-17|トヨタ自動車株式会社|Sliding member|
    JP4774990B2|2003-07-18|2011-09-21|オイレス工業株式会社|Resin composition for sliding member and sliding member|
    JP4634093B2|2004-08-09|2011-02-23|アクロス株式会社|Composition for sliding member|
    WO2009041653A1|2007-09-27|2009-04-02|Taiho Kogyo Co., Ltd.|Composition for sliding member and sliding member coated with the composition|
    JP4504409B2|2007-10-10|2010-07-14|大同メタル工業株式会社|Plain bearing|
    DE102008055194A1|2008-12-30|2010-07-08|Federal-Mogul Wiesbaden Gmbh|Slide|
    JP4932884B2|2009-05-01|2012-05-16|アクロス株式会社|Coating composition for sliding member|BR112014006606B1|2011-09-28|2019-10-15|Taiho Kogyo Co., Ltd.|SYSTEM UNDERSTANDING A SLIDING MEMBER AND A COUPLING MEMBER|
    US10309457B2|2012-03-27|2019-06-04|Senju Metal Industry Co., Ltd.|Sliding member|
    EP2913125B1|2012-10-25|2018-10-03|Senju Metal Industry Co., Ltd|Sliding member and production method for same|
    ES2791603T3|2013-02-15|2020-11-05|Senju Metal Industry Co|Sliding Element and Sliding Element Production Method|
    JP5713073B2|2013-09-27|2015-05-07|千住金属工業株式会社|Sliding member and manufacturing method of sliding member|
    JP5713074B2|2013-09-27|2015-05-07|千住金属工業株式会社|Sliding member|
    JP2017503978A|2013-12-31|2017-02-02|サン−ゴバン パフォーマンス プラスティックス コーポレイション|Composite bearing with polyimide matrix|
    GB2530789A|2014-10-02|2016-04-06|Mahle Engine Systems Uk Ltd|Bearing material|
    JP2017115135A|2015-12-11|2017-06-29|株式会社リコー|Slide member, component and method for reducing noise of mechanical device|
    JP2017219200A|2016-06-01|2017-12-14|東洋製罐グループホールディングス株式会社|Sliding structure and method for producing the same|
    JP2020067096A|2018-10-22|2020-04-30|大同メタル工業株式会社|Slide member and bearing device using the same|
    JP2020097951A|2018-12-17|2020-06-25|大豊工業株式会社|Slide member|
    JP2020097947A|2018-12-17|2020-06-25|大豊工業株式会社|Slide member|
    JP2020097948A|2018-12-17|2020-06-25|大豊工業株式会社|Slide member|
    JP2020097950A|2018-12-17|2020-06-25|大豊工業株式会社|Slide member|
    法律状态:
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-06-30| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-03-09| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-05-25| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 13/09/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2011-199559|2011-09-13|
    JP2011199559|2011-09-13|
    PCT/JP2012/073525|WO2013039177A1|2011-09-13|2012-09-13|Sliding member and sliding material composition|
    [返回顶部]