JPWO2014126202A1 - 摺動部材 - Google Patents
摺動部材 Download PDFInfo
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- JPWO2014126202A1 JPWO2014126202A1 JP2015500310A JP2015500310A JPWO2014126202A1 JP WO2014126202 A1 JPWO2014126202 A1 JP WO2014126202A1 JP 2015500310 A JP2015500310 A JP 2015500310A JP 2015500310 A JP2015500310 A JP 2015500310A JP WO2014126202 A1 JPWO2014126202 A1 JP WO2014126202A1
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- resin
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- bearing
- sliding member
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- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1095—Construction relative to lubrication with solids as lubricant, e.g. dry coatings, powder
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- B32B15/00—Layered products comprising a layer of metal
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- B32B27/00—Layered products comprising a layer of synthetic resin
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- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
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- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09D179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
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- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
- F16C17/022—Sliding-contact bearings for exclusively rotary movement for radial load only with a pair of essentially semicircular bearing sleeves
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- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/02—Sliding-contact bearings
- F16C23/04—Sliding-contact bearings self-adjusting
- F16C23/041—Sliding-contact bearings self-adjusting with edge relief
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- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
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- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/203—Multilayer structures, e.g. sleeves comprising a plastic lining
- F16C33/206—Multilayer structures, e.g. sleeves comprising a plastic lining with three layers
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- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/746—Slipping, anti-blocking, low friction
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Abstract
Description
図1は、一実施形態に係る主軸受(すべり軸受)11の構造を示す図である。主軸受11は摺動部材の一例であり、例えば、内燃機関のクランクシャフトとコネクティングロッド、またはクランクシャフトとエンジンブロックの間の軸受として用いられる。主軸受11は、2つの半割軸受13により構成される。2つの半割軸受13を接合すると円筒状の軸受が得られる。なお、図1においては、単一の半割軸受13のみを示している。
一実施形態に係る軸受の製造方法は、以下に示す工程を含む。
(a)固体潤滑剤およびバインダー樹脂を含むオーバレイ前駆体を調製する工程
(b)軸受基材を成形する工程
(c)軸受基材上に、オーバレイ前駆体を塗布する工程
(d)オーバレイ前駆体を乾燥させる工程
(e)オーバレイ前駆体を焼成する工程
オーバレイ層19の膜厚差(高さの差)dおよび傾斜開始位置Pを変化させた試料(実施例1〜8および比較例1〜5)を作製し、これらの試料において起動トルクおよび焼付き面圧を測定した。なお起動トルクは、相手軸23と主軸受11との間に形成される油膜の厚さを示す指標である。油膜の厚さを直接測定することは困難であるので、油膜の厚さを示す指標として起動トルクを測定した。起動トルクがより小さいと油膜がより厚いことが示される。焼付き面圧は、耐焼付き性を示す指標である。焼付き面圧が高いほど耐焼付き性に優れていることが示される。焼付き面圧が高いということは、オーバレイ層の剥離が起こりにくいということを示している。
まず、試料の作製方法は以下のとおりである。鋼製の裏金15に、アルミニウム合金をライニング層17として圧接した。この材料を半割り円筒形状に加工した。オーバレイ層19の材料を溶剤(N−メチル−2−ピロリドン)で希釈して塗布液を調整した。この塗布液をエアースプレー方法でコーティングした。次に、100℃、20minで乾燥した後、200℃、60minで焼成を行った。
軸受幅K:15mm
オーバレイ層の中央膜厚:6μm
オーバレイ層の成分:バインダー樹脂(PAI) 58体積%
固体潤滑剤(グラファイト) 40体積%
硬質物(SiC) 1体積%
各試料におけるオーバレイ層19の膜厚差hおよび傾斜開始位置Pは表1に記載されている。
起動トルクの測定には、神鋼造機製の回転荷重試験機を用いた。この試験機は、ハウジングに組み付けられた二組の試験軸受部とボールベアリングで軸と連結された荷重負荷用ハウジングで構成されており、相手軸はトルク計を介して駆動用のモーターに連結されている。試験部への給油はハウジングから軸受の油穴を通して行われる。潤滑油は、接触角の測定に用いたエンジン油と同じものを用いた。給油温度は30℃とした。運転パターンは、起動−停止とし、軸回転速度700rpmまでの加速(1.7m/s)と定速運転で10秒、減速と停止で10秒の1サイクル20秒とした。荷重は2000N(1.2MPa)を常時負荷した。サイクル数は180サイクル、試験時間は1時間とした。起動トルク測定では、起動時に発生するトルクピーク値を測定するが、試験初期はトルクのばらつきが大きいため、終盤20サイクルを対象にしてその測定値の平均値で比較評価した。
下記に示す条件で焼付き試験を行い、焼付きに至った面圧を焼付面圧として測定した。
回転数:8000rpm
潤滑油:0W−20
給油温度:140℃
荷重:3分毎に3kNずつ荷重漸増
評価結果を表1に示す。
Claims (7)
- 相手軸と摺動する摺動面および当該摺動面の軸方向端部に設けられた面取り部を有するライニング層と、
樹脂で形成され前記面取り部の少なくとも一部を覆うオーバレイ層と
を有する摺動部材。 - 前記オーバレイ層は、前記ライニング層の軸方向の幅をWとしたときに、軸方向端面からの距離がW/2よりも短い位置を傾斜開始位置として、前記軸方向端部に向かって傾斜するクラウニング形状を有する
ことを特徴とする請求項1に記載の摺動部材。 - 前記オーバレイ層において、前記傾斜開始位置と前記摺動面の軸方向端部位置との高さの差が6μm以下である
ことを特徴とする請求項2に記載の摺動部材。 - 前記オーバレイ層は、
バインダー樹脂と、
固体潤滑材および硬質物の少なくとも一方と
を含むことを特徴とする請求項1ないし3のいずれか一項に記載の摺動部材。 - 前記バインダー樹脂は、ポリアミドイミド樹脂、ポリイミド樹脂、エポキシ樹脂、フェノール樹脂、ポリアセタール樹脂、ポリエーテルエーテルケトン樹脂、およびポリフェニレンサルファイド樹脂の少なくとも1つを含む
ことを特徴とする請求項4に記載の摺動部材。 - 前記固体潤滑材は、MoS2、PTFE、グラファイト、WS2、h−BN、およびSB203の少なくとも1つを含む
ことを特徴とする請求項4または5に記載の摺動部材。 - 前記硬質物は、SiC、Al203、TiN、AIN、CrO2、Si3N4、ZrO2、およびPの少なくとも1つを含む
ことを特徴とする請求項4ないし6のいずれか一項に記載の摺動部材。
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PL3346874T3 (pl) | 2015-09-07 | 2020-04-30 | Ikea Supply Ag | Szuflada i szufladowy system przesuwny do takiej szuflady |
SI3346885T1 (sl) | 2015-09-07 | 2021-04-30 | Ikea Supply Ag | Drsni sistem drsnega zaslona |
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GB2552997B (en) | 2016-08-19 | 2022-01-05 | Mahle Int Gmbh | Sliding component and method |
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