EP3263721A1 - Hochtemperaturverschleissfestes material auf aluminium-bronze-basis - Google Patents

Hochtemperaturverschleissfestes material auf aluminium-bronze-basis Download PDF

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Publication number
EP3263721A1
EP3263721A1 EP16755004.5A EP16755004A EP3263721A1 EP 3263721 A1 EP3263721 A1 EP 3263721A1 EP 16755004 A EP16755004 A EP 16755004A EP 3263721 A1 EP3263721 A1 EP 3263721A1
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EP
European Patent Office
Prior art keywords
mass
content
bronze
less
high temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16755004.5A
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English (en)
French (fr)
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EP3263721A4 (de
EP3263721B1 (de
Inventor
Takashi Murakami
Hajime Nakayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sankyo Oilless Industries Inc
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Sankyo Oilless Industries Inc
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/01—Alloys based on copper with aluminium as the next major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/20—Measures not previously mentioned for influencing the grain structure or texture; Selection of compositions therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/05—Alloys based on copper with manganese as the next major constituent

Definitions

  • the present invention relates to an aluminum-bronze-based material having high wear resistance in high-temperature environments.
  • copper alloys such as high-strength brass castings are generally used in sliding members such as exhaust valve bushes.
  • Patent Literature 1 discloses a copper-based bearing sliding material which contains 3 to 15% by mass of Al, 1 to 8% by mass of Mn, 0.05 to 5% by mass of Si, 0.5 to 5% by mass of Ni, and 1 to 10% by mass of Fe, with the remainder being unavoidable impurities and Cu, in which an Fe-Mn-Si-based hard material is dispersed.
  • Patent Literature 1 JP3929288B
  • Patent Literature 1 the hardness of the matrix material of the known aluminum bronze-based sliding member as disclosed in Patent Literature 1 decreases in high-temperature environments (for example, a high-temperature environment at 150°C to 350°C). Accordingly, the allowable surface pressure value is lowered, and it cannot be said that wear resistance is sufficient. Thus, a further sophisticated material is demanded to be supplied in order to reduce the replacement frequency of sliding members in industrial machines which are used in adverse environments where the replacement is not easy.
  • the present invention has been made to solve such a known problem, and an object thereof is to provide a material which has both surface pressure resistance and wear resistance not only in normal temperature environments but also in high-temperature environments.
  • the high temperature wear-resistant aluminum-bronze-based material according to the present invention is characterized in that an Al content is 9.0% by mass or more and 11.0% by mass or less, an Ni content is 1.0% by mass or more and 3.0% by mass or less, an Mn content is 8.5% by mass or more and 15.0% by mass or less, an Si content is 2.0% by mass or more and 4.0% by mass or less, an Fe content is 0.5% by mass or more and 5.0% by mass or less, and a Co content is 0.01% by mass or more and 1.5% by mass or less, with the remainder being substantially Cu.
  • a sliding member which has both surface pressure resistance and wear resistance even in high-temperature environments.
  • the reduction of the wear amount due to sliding movements enables the replacement frequency of a component such as a sliding member to be drastically reduced in industrial machines and molds of which sliding members are not easy to replace.
  • the high temperature wear-resistant aluminum-bronze-based material according to the present embodiment is a material which contains Al, Ni, Mn, Si, Fe, and Co in respective predetermined amounts in terms of % by mass, with the remainder being Cu.
  • the high temperature wear-resistant aluminum-bronze-based material according to the present embodiment has an Al content of 9.0% by mass or more and 11.0% by mass or less, and preferably 9.0% by mass or more and 10.0% by mass or less.
  • the matrix material can have an appropriate hardness of HV280 or more, thereby improving surface pressure resistance. It is noted that the hardness of the matrix material is measured by a method in accordance with JIS Z2243 2008.
  • the high temperature wear-resistant aluminum-bronze-based material according to the present embodiment has an Ni content of 1.0% by mass or more and 3.0% by mass or less, and preferably 1.5% by mass or more and 2.5% by mass or less.
  • Ni enables the solubility limit of Al in an ⁇ phase to be widened, and also the melting point of the matrix material to be increased thereby improving heat resistance.
  • the inclusion of Ni contributes to deposition of a hard material, together with Fe-Si-Mn described later.
  • the heat resistance of the matrix material is not satisfied.
  • the Ni content exceeds the above-described value range, there is the drawback that the matrix material is embrittled, and a manufactured product becomes expensive because Ni is a rare metal.
  • the high temperature wear-resistant aluminum-bronze-based material according to the present embodiment has a structure in which an Fe-Mn-Si-based hard material is dispersed, the wear resistance as a sliding member improves.
  • the high temperature wear-resistant aluminum-bronze-based material according to the present embodiment has an Mn content of 8.5% by mass or more and 15.0% by mass or less, preferably 8.5% by mass or more and 13.0% by mass or less, and more preferably 8.5% by mass or more and 10.0% by mass or less.
  • Mn content is within the above-described value range
  • Si, Mn and the like described later causes an Fe-Si-Mn-based hard material to be deposited in the matrix material, thereby improving wear resistance.
  • the matrix material can have suitable toughness.
  • the high temperature wear-resistant aluminum-bronze-based material according to the present embodiment has an Fe content of 0.5% by mass or more and 5.0% by mass or less, preferably 1.0% by mass or more and 5.0% by mass or less, and more preferably 1.5% by mass or more and 5.0% by mass or less.
  • Fe content is within the above-described value range, Fe is deposited together with Mn-Si and the like as a hard material in the matrix material, and particularly contributes to a finer structure of the above-described hard material, thereby improving the properties as a sliding member.
  • the high temperature wear-resistant aluminum-bronze-based material according to the present embodiment has an Si content of 2.0% by mass or more and 4.0% by mass or less, preferably 2.0% by mass or more and 3.0% by mass or less, and more preferably 2.5% by mass or more and 3.0% by mass or less.
  • Si content is within the above-described value range, Si, together with Mn and Fe, causes a eutectic hard material to be deposited, thereby improving sliding properties.
  • the high temperature wear-resistant aluminum-bronze-based material according to the present embodiment has a Co content of 0.01% by mass or more and 1.5% by mass or less. According to the present embodiment, the inclusion of Co improves heat resistance.
  • FIGs. 1 to 4 are each a diagram illustrating a configuration of a sliding member which adopts as a base material the high temperature wear-resistant aluminum-bronze-based material according to the present embodiment.
  • FIG. 1 illustrates a plate-like sliding member 1 which is the type having no solid lubricant.
  • FIG. 2 illustrates a plate-like sliding member 2 which is the type having a plurality of pieces of a solid lubricant 3 embedded therein.
  • FIG. 3 illustrates a hollow cylindrical sliding member 4 which is the type having no solid lubricant.
  • FIG. 4 illustrates a hollow cylindrical sliding member 5 which is the type having a plurality of pieces of a solid lubricant 6 embedded therein. It is noted that FIGs. 1 to 4 illustrate examples of the form of a sliding member, and the form of the sliding member is not limited to these embodiments .
  • a plurality of pieces of a solid lubricant having a self-lubricating action may be embedded in portions of a sliding surface formed from the high temperature wear-resistant aluminum-bronze-based material according to the present embodiment.
  • the solid lubricant according to the present embodiment to be used may include solid lubricants, such as a graphite-based solid lubricant, a PTFE-based solid lubricant, a MoS2-based solid lubricant, and a Pb alloy-based solid lubricant.
  • the provision of the sliding surface in which a solid lubricant is embedded causes the lubricant to be dispersed on the sliding surface even in high-temperature environments. Therefore, the high temperature wear-resistant aluminum-bronze-based material according to the present embodiment can have improved sliding properties, and becomes suitable as a sliding member.
  • the high temperature wear-resistant aluminum-bronze-based material according to the present embodiment have a Vickers hardness of HV280 or more, an elongation of 0.5% or more, and a tensile strength of 500 N/mm 2 or more.
  • HV280 Vickers hardness of HV280 or more
  • elongation 0.5% or more
  • tensile strength 500 N/mm 2 or more.
  • the elongation refers to an elongation that is measured with a tensile test piece in accordance with JIS Z2241. Also, when the tensile strength is equal to or more than 500 N/mm 2 or more, load bearing properties in high-temperature environments are improved.
  • the sliding properties of the present invention will be described in detail by way of examples.
  • Table 1 indicates composition values [Wt%] of the test pieces according to Examples 1 to 8 and Comparative Examples 1 to 5. The composition values were obtained by ICP emission spectrochemical analysis.
  • the test pieces according to Example 1 to Example 8 have a composition in which an Al content was 9.0% by mass or more and 11.0% by mass or less, an Mn content was 8.5% by mass or more and 15.0% by mass or less, an Fe content was 0.5% by mass or more and 5.0% by mass or less, an Ni content was 1.0% by mass or more and 3.0% by mass or less, an Si content was 2.0% by mass or more and 4.0% by mass or less, and a Co content was 0.01% by mass or more and 1.5% by mass or less, with the remainder being substantially Cu.
  • Table 2 indicates measurement results of the hardness and wear amount for the block test pieces according to Examples 1 to 8 and Comparative Examples 1 to 5.
  • Hardness [HV] Wear amount [ ⁇ m]
  • Example 1 372 42.8
  • Example 2 341 42.5
  • Example 4 362 40.8
  • Example 5 302 40.5
  • Example 6 306 36.5
  • Example 7 342 35.5
  • Example 8 289 35.5
  • Comparative Example 1 181 48.0 Comparative Example 2 321 53.8 Comparative Example 3 334 51.5 Comparative Example 4 297 58.8 Comparative Example 5 410 49.8
  • the hardness was obtained by measuring the Vickers hardness of the block test pieces according to Examples 1 to 8 and Comparative Examples 1 to 5 at room temperature. As understood from Table 2, the hardness of the test pieces according to Examples 1 to 8 is 280 or more.
  • the wear amount was measured by performing a block-on-ring type sliding test for the block test pieces according to Examples 1 to 8 and Comparative Examples 1 to 5.
  • the condition of the sliding test is a surface pressure of 10 MPa, a sliding speed of 10 m/min, an environment temperature of 250°C, and a sliding distance of 500 m.
  • the sliding test was performed with a dedicated test machine.
  • the block test piece was pressed against a ring test piece in a state where the temperature in the test machine was maintained at 250°C thereby to apply a load, and the ring test piece was rotated at a constant speed. It is noted that S45C (quenched and tempered at high frequency) was used as the ring test piece that is a mating material.
  • the wear amount of the block test pieces according to Examples 1 to 8 is 35.5 ⁇ m or more and 42.8 ⁇ m or less, indicating that the wear amount is small.
  • the wear amount of the block test pieces according to Comparative Examples 1 to 5 is 48.0 ⁇ m or more and 58.8 ⁇ m or less, indicating that the wear amount is large.
  • the wear amount is 40.8 ⁇ m or less in Example 4 to Example 8. Therefore, it is understood that these compositions are preferable. Furthermore, the wear amount is 36.5 ⁇ m or less in Example 6 to Example 8. Therefore, it is understood that these compositions are more preferable.
  • a sliding member which has both surface pressure resistance and wear resistance even in high-temperature environments. Furthermore, by reducing the wear amount of the sliding member, the replacement frequency of the sliding member can be drastically reduced in industrial machines of which the sliding members are not easy to replace.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Sliding-Contact Bearings (AREA)
EP16755004.5A 2015-02-24 2016-02-24 Hochtemperaturverschleissfestes material auf aluminium-bronze-basis Active EP3263721B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015034357 2015-02-24
PCT/JP2016/000987 WO2016136254A1 (ja) 2015-02-24 2016-02-24 高温耐摩耗性アルミニウム青銅系材料

Publications (3)

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EP3263721A1 true EP3263721A1 (de) 2018-01-03
EP3263721A4 EP3263721A4 (de) 2018-08-08
EP3263721B1 EP3263721B1 (de) 2019-05-29

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US (1) US20180037978A1 (de)
EP (1) EP3263721B1 (de)
JP (1) JP6764397B2 (de)
WO (1) WO2016136254A1 (de)

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* Cited by examiner, † Cited by third party
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JP7213525B2 (ja) * 2017-11-13 2023-01-27 トクデン株式会社 誘導発熱ローラ装置
CN109788593A (zh) 2017-11-13 2019-05-21 特电株式会社 感应发热辊装置
CN110106393B (zh) * 2019-05-14 2021-04-16 中国兵器科学研究院宁波分院 一种高锰耐磨铝青铜合金及其制备方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62235446A (ja) * 1986-04-04 1987-10-15 Kobe Steel Ltd 耐焼付性に優れる高強度な高マンガン・アルミニウム青銅
JP2866384B2 (ja) * 1988-11-04 1999-03-08 オイレス工業株式会社 耐摩耗性を有する摺動部材用アルミニウム青銅鋳物
JP3300684B2 (ja) * 1999-07-08 2002-07-08 清仁 石田 形状記憶特性及び超弾性を有する銅系合金、それからなる部材ならびにそれらの製造方法
JP3929288B2 (ja) * 2001-11-09 2007-06-13 大豊工業株式会社 高温耐摩耗性に優れた銅系軸受材料及びその製造方法
FR2922898B1 (fr) * 2007-10-31 2009-12-04 Auxitrol Sa Perfectionnements aux alliages cu-al-ni-fe et sonde pour la mesure d'un parametre physique comporatant un element dans un tel alliage
JP5342882B2 (ja) * 2009-01-06 2013-11-13 オイレス工業株式会社 摺動部材用高力黄銅合金および摺動部材
CN102859015B (zh) * 2010-05-21 2015-03-04 奥依列斯工业株式会社 滑动部件用高强度黄铜合金及滑动部件
WO2011152009A1 (ja) * 2010-05-31 2011-12-08 社団法人 日本銅センター 銅系合金及びそれを用いた構造材

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Publication number Publication date
US20180037978A1 (en) 2018-02-08
JPWO2016136254A1 (ja) 2017-12-07
EP3263721A4 (de) 2018-08-08
JP6764397B2 (ja) 2020-09-30
WO2016136254A1 (ja) 2016-09-01
EP3263721B1 (de) 2019-05-29

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