WO2011021418A1 - 鉄系焼結摺動部材及びその製造方法 - Google Patents
鉄系焼結摺動部材及びその製造方法 Download PDFInfo
- Publication number
- WO2011021418A1 WO2011021418A1 PCT/JP2010/058741 JP2010058741W WO2011021418A1 WO 2011021418 A1 WO2011021418 A1 WO 2011021418A1 JP 2010058741 W JP2010058741 W JP 2010058741W WO 2011021418 A1 WO2011021418 A1 WO 2011021418A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- iron
- mass
- sliding member
- component
- based sintered
- Prior art date
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 256
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 124
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000000034 method Methods 0.000 title abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 49
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052802 copper Inorganic materials 0.000 claims abstract description 27
- 239000010949 copper Substances 0.000 claims abstract description 27
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 22
- 239000011572 manganese Substances 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 18
- 239000011812 mixed powder Substances 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 230000007935 neutral effect Effects 0.000 claims abstract description 4
- 229910000914 Mn alloy Inorganic materials 0.000 claims description 48
- BQCFCWXSRCETDO-UHFFFAOYSA-N [Fe].[Mn].[Cu] Chemical compound [Fe].[Mn].[Cu] BQCFCWXSRCETDO-UHFFFAOYSA-N 0.000 claims description 48
- 229910001562 pearlite Inorganic materials 0.000 claims description 43
- 229910052799 carbon Inorganic materials 0.000 claims description 37
- 229910000859 α-Fe Inorganic materials 0.000 claims description 35
- 238000005245 sintering Methods 0.000 claims description 22
- 239000003921 oil Substances 0.000 claims description 16
- 239000010687 lubricating oil Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000005470 impregnation Methods 0.000 claims description 6
- 229910021382 natural graphite Inorganic materials 0.000 claims description 6
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 4
- 229910021383 artificial graphite Inorganic materials 0.000 claims description 3
- 230000001747 exhibiting effect Effects 0.000 claims 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 abstract description 22
- 229910001567 cementite Inorganic materials 0.000 abstract description 19
- 238000001556 precipitation Methods 0.000 abstract description 12
- 230000002829 reductive effect Effects 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 28
- 150000002505 iron Chemical class 0.000 description 12
- 239000007791 liquid phase Substances 0.000 description 12
- 239000000758 substrate Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 9
- 239000012071 phase Substances 0.000 description 8
- 230000001050 lubricating effect Effects 0.000 description 7
- 239000007790 solid phase Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 6
- 238000010998 test method Methods 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- QPBIPRLFFSGFRD-UHFFFAOYSA-N [C].[Cu].[Fe] Chemical group [C].[Cu].[Fe] QPBIPRLFFSGFRD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004438 BET method Methods 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- IYRDVAUFQZOLSB-UHFFFAOYSA-N copper iron Chemical compound [Fe].[Cu] IYRDVAUFQZOLSB-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F3/26—Impregnating
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0207—Using a mixture of prealloyed powders or a master alloy
- C22C33/0228—Using a mixture of prealloyed powders or a master alloy comprising other non-metallic compounds or more than 5% of graphite
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- 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
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
- F16C33/104—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing in a porous body, e.g. oil impregnated sintered sleeve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- 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
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/121—Use of special materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Definitions
- the present invention relates to an iron-based sintered sliding member having excellent sliding characteristics and a method for manufacturing the same.
- iron-based sintered materials iron-carbon or iron-copper-carbon bearing materials impregnated with a liquid lubricant (lubricating oil) have been known, and iron-carbon or iron-copper- Carbon-based sintered materials (for example, see Non-Patent Document 1) are known.
- a blending amount of at least 3% by mass is required to obtain a solid lubricating action of carbon, but the iron powder and the carbon powder react during the sintering process.
- a phenomenon that high hardness free cementite (Fe 3 C) precipitates in the sintered structure appears. This precipitation of hard cementite in the structure causes the drawback of damaging the shaft (partner material) when sliding against the other material, for example, the shaft, and should be avoided as much as possible in sliding applications. It is an important element that must be.
- JP 55-38930 A Japanese Patent Laid-Open No. 58-19403 JP 58-126959 A
- a method of blending a graphitization stabilizing element such as silicon to prevent the precipitation of free cementite is conceivable (for example, refer to Patent Document 1). Since heating at a temperature of about 1200 ° C. or higher is required, a much higher temperature is required as compared with the sintering temperature of a normal iron-based sintered material. If not strictly controlled, silicon may be oxidized.
- a method for producing an iron-based sintered material in which ferrosilicon (FeSi) powder is blended to prevent precipitation of free cementite in the structure for example, see Patent Document 2 and Patent Document 3).
- an object of the present invention is to provide an iron-based sintered sliding member that is free from precipitation of free cementite in the structure and has excellent sliding characteristics such as friction wear and a method for manufacturing the same.
- the inventors focused on copper and manganese, which are elements that promote the formation of a ferrite phase ( ⁇ phase) structure, and formed them into a form of a copper-iron-manganese master alloy.
- copper and manganese are sufficiently diffused and dissolved in the ⁇ -phase structure by adding a predetermined amount to the iron-carbon-X (metal element) -based sintered material. It was found that a copper-iron-manganese master alloy is dispersed and contained, and there is no precipitation of free cementite in the ⁇ phase structure, and an iron-based sintered material having excellent sliding characteristics can be obtained.
- the iron-based sintered sliding member of the present invention is based on the above knowledge, and is an iron-based sintered sliding member comprising iron powder, copper-iron-manganese alloy powder, and carbon powder, Consists of 2.67 to 18.60% by mass of component, 0.12 to 1.20% by mass of manganese component, 1.0 to 5.0% by mass of carbon component, and remaining iron component. It is characterized in that it exhibits a structure in which ferrite coexists, and there is no precipitation of free cementite in the base structure, and a copper-iron-manganese alloy is dispersedly contained.
- the copper-iron-manganese master alloy dispersed and contained in the base structure may be dispersed and contained in a network at grain boundaries of the base structure.
- the copper-iron-manganese alloy dispersed and contained in the base structure has a micro Vickers hardness (HMV) of 100 to 120, while the base pearlite structure or The micro Vickers hardness (HMV) of a structure in which pearlite and ferrite partially coexist is 350 to 450.
- HMV micro Vickers hardness
- a copper-iron-manganese alloy having a hardness lower than the hardness of the structure is dispersedly contained in the base pearlite structure or a structure in which pearlite and a part of ferrite coexist. Therefore, the compatibility with the mating member such as the rotating shaft on the sliding surface is improved, and the sliding characteristics can be improved.
- natural graphite or artificial graphite is used as the carbon.
- This carbon is dispersed and contained at a ratio of 1 to 5% by mass in the base pearlite structure or the structure where pearlite and a part of ferrite coexist, and the carbon retains its own solid lubricating action and lubricating oil described later. Play a role as a body.
- the blending amount of carbon is 3% by mass or more, self-lubricating property due to a solid lubricating action is imparted.
- lubricating oil is contained at a ratio of 10 to 15% by volume.
- This lubricating oil imparts a liquid lubricating action to the iron-based sintered sliding member, and further improves the self-lubricating property in combination with the above-described solid lubricating action by carbon.
- the method for producing an iron-based sintered sliding member of the present invention comprises 3 to 20% by mass of an alloy powder comprising 4 to 6% by mass of manganese, 3 to 5% by mass of iron, and the balance copper with respect to the iron powder as a main component. After mixing 1 to 5% by mass of carbon powder and mixing to obtain a mixed powder, the mixed powder is loaded into a mold to form a green compact of a desired shape, and this green compact is neutral or reduced It is characterized by sintering at a temperature of 1000 to 1100 ° C. for 30 to 60 minutes in a heating furnace adjusted to a neutral atmosphere.
- the iron-based sintered sliding member obtained by this production method has a copper component of 2.67 to 18.6% by mass, a manganese component of 0.12 to 1.2% by mass, and a carbon component of 1.0 to 5.0% by mass. % Of the remaining iron component, and the base structure exhibits a pearlite structure or a structure in which pearlite and a part of ferrite coexist, and there is no precipitation of free cementite in the structure, and a copper-iron-manganese alloy is formed in the base structure. Contains dispersed.
- the copper-iron-manganese alloy powder in the component forms a liquid phase at a temperature of 1050 ° C., so that it is hard to sinter at a temperature of 1000 ° C. or higher and lower than 1050 ° C.
- liquid phase sintering is performed in the sintering at a temperature of 1050 ° C. or higher and 1100 ° C. or lower.
- the iron-based sintered sliding member obtained by solid-phase sintering has a base material with a pearlite structure or a structure in which pearlite and a part of ferrite coexist, and there is no precipitation of free cementite in the structure, and the base structure has a copper structure.
- -An iron-manganese alloy is dispersedly contained.
- the iron-based sintered sliding member obtained by liquid phase sintering is a sintered sliding member in which the base exhibits a pearlite structure or a structure in which pearlite and a part of ferrite coexist, and there is no precipitation of free cementite in the structure.
- the copper-iron-manganese alloy is dispersed and contained in the grain boundaries of the structure of the substrate.
- An iron-based sintered sliding member obtained by solid-phase sintering or liquid-phase sintering contains any element of copper and manganese, which are elements that promote the formation of a ferrite phase ( ⁇ -phase) structure. Also in the sintering, the substrate exhibits a pearlite structure or a structure in which pearlite and a part of ferrite coexist, and free cementite is not precipitated in the structure.
- an iron-based sintered sliding member comprising iron powder, copper-iron-manganese alloy powder, and carbon powder, comprising 2.67 to 18.6% by mass of copper component and 0.12 manganese component. It consists of ⁇ 1.2 mass%, carbon component 1.0-5.0 mass%, and the remaining iron component, and the substrate exhibits a pearlite structure or a structure in which pearlite and a part of ferrite coexist and copper-iron in the substrate structure It is possible to provide an iron-based sintered sliding member that contains a manganese alloy in a dispersed manner, has good conformability and exhibits excellent sliding characteristics, and a method for manufacturing the same.
- a micrograph of an iron-based sintered sliding member comprising 85% by mass of an iron component, 12% by mass of a copper-iron-manganese alloy component, and 3% by mass of a carbon component obtained by solid phase sintering at a temperature of 1000 ° C. (magnification 200) Times).
- Micrograph of an iron-based sintered sliding member comprising 85 mass% of an iron component, 12 mass% of a copper-iron-manganese alloy component, and 3 mass% of a carbon component obtained by liquid phase sintering at a temperature of 1100 ° C (magnification 200) Times). It is a microscope picture of 400 times the magnification of FIG.
- An iron-based sintered sliding member made of 85 mass% of an iron component, 12 mass% of a copper-iron-manganese alloy component, and 3 mass% of a carbon component obtained by liquid phase sintering at a temperature of 1100 ° C is the same as pearlite.
- 4 is an image taken with a scanning electron microscope (SEM) of a copper-iron-manganese alloy part (the part indicated by a square in the figure) precipitated at a grain boundary of a structure in which part ferrite coexists.
- SEM scanning electron microscope
- An iron-based sintered sliding member made of 85 mass% of an iron component, 12 mass% of a copper-iron-manganese alloy component, and 3 mass% of a carbon component obtained by liquid phase sintering at a temperature of 1100 ° C is the same as pearlite. It is the image image
- the iron-based sintered sliding member of the present invention is an iron-based sintered sliding member comprising an iron component, a copper-iron-manganese alloy component, and a carbon component, and has a copper component of 2.67 to 18.60% by mass. And 0.1 to 1.20% by mass of manganese component, 1.0 to 5.0% by mass of carbon component and the remaining iron component, and the substrate exhibits a pearlite structure or a structure in which pearlite and a part of ferrite coexist, and the substrate This structure is characterized in that a carbon component and a copper-iron-manganese alloy component are dispersedly contained.
- the iron component as a main component is a reduction having a particle size passing through an 80 mesh sieve (177 ⁇ m or less) and an apparent density of about 2.4 to 3.0 Mg / m 3.
- Iron powder and atomized iron powder (water atomized iron powder) are preferably used.
- the specific surface area by gas adsorption method (BET method -ISO 9277) in these iron powders, the atomized iron powder 60 ⁇ 80m 2 / kg, a reduced iron powder is 80 ⁇ 100m 2 / kg.
- Atomized iron powder has few pores in the powder and a small specific surface area, whereas reduced iron powder has relatively many pores and many irregularities on the surface, and has a higher specific surface area than atomized iron powder.
- the copper component and the manganese component blended in a predetermined ratio with respect to the iron component constituting the main component are used in the form of a copper-iron-manganese alloy.
- the copper component and the manganese component in these alloys are elements that promote the formation of a ferrite phase ( ⁇ phase) structure, and suppress the reaction between the iron component that forms the main component and the carbon component described later in the sintering process. This serves to prevent the precipitation of free cementite in the structure of the sintered body.
- the copper component and the manganese component are the main components because these elements are alloyed in advance. It is presumed that this is because it preferentially dissolves in the formed iron component and prevents solid dissolution of the carbon component in the iron component as much as possible.
- the component composition of this copper-iron-manganese alloy component is composed of 89 to 93% by mass of copper component, 3 to 5% by mass of iron component, and 4 to 6% by mass of manganese component. 3 to 20% by mass with respect to the iron component constituting the component, that is, 2.67 to 18.6% by mass of copper component, 0.09 to 1.0% by mass of iron component, 0.12 to 1% of manganese component with respect to the iron component .2% by mass is blended.
- the above-described copper-iron-manganese alloy component has a liquidus point at a temperature of 1050 ° C., and is solid phase sintered at a temperature below 1050 ° C. and liquid phase sintered at a temperature of 1050 ° C. or higher. .
- the copper-iron-manganese alloy component In solid-phase sintering with a sintering temperature of less than 1050 ° C., the copper-iron-manganese alloy component is dispersed and contained in the base pearlite structure or the structure in which pearlite and a part of ferrite coexist.
- liquid phase sintering at 1050 ° C. or higher the copper-iron-manganese alloy component is dispersed and contained in the form of a network at the grain boundaries of the base pearlite structure or the structure where pearlite and a part of ferrite coexist.
- FIG. 1 is a photomicrograph (magnification of iron-based sintered sliding member consisting of 85 mass% iron component, 12 mass% copper-iron-manganese alloy component, and 3 mass% carbon component, solid-phase sintered at a temperature of 1000 ° C.
- FIG. 2 shows an iron-based sintered sliding composed of 85% by mass of an iron component, 12% by mass of a copper-iron-manganese alloy component, and 3% by mass of a carbon component sintered at a temperature of 1100 ° C.
- FIG. 3 is a photomicrograph (200 ⁇ magnification) of the member, and FIG. 3 is a photomicrograph of 400 ⁇ magnification of FIG.
- the copper-iron-manganese alloy component appears to be dispersed white in the structure in which the base pearlite and some ferrite coexist.
- the copper-iron-manganese alloy component appears to be dispersed in white as a network at the grain boundaries of the texture.
- FIG. 4 and 5 show an iron-based sintered sliding member comprising 85% by mass of an iron component, 12% by mass of a copper-iron-manganese alloy component, and 3% by mass of a carbon component, which are liquid phase sintered at a temperature of 1100 ° C. 4 is an image taken with a scanning electron microscope (SEM).
- FIG. 4 shows a copper-iron-manganese alloy part dispersed in grain boundaries of a structure in which pearlite of the substrate and part of ferrite coexist (displayed by squares in the figure).
- the component composition of the part shows that the copper component is 89.25% by mass, the manganese component is 0.80% by mass, and the iron component is 9.68% by mass.
- FIG. 4 shows a copper-iron-manganese alloy part dispersed in grain boundaries of a structure in which pearlite of the substrate and part of ferrite coexist (displayed by squares in the figure).
- the component composition of the part shows that the
- the composition of the part is 93.56% by mass of the iron component, 5.09% by mass of the copper component, The manganese content is 1.35% by mass.
- the hardness of the portion of the structure where the pearlite of the substrate and a part of ferrite coexist and the portion of the copper-iron-manganese alloy contained in the structure are
- the part of the structure in which pearlite and ferrite partially coexist has a micro Vickers hardness (HMV) of 350 to 450, and the part of the copper-iron-manganese alloy shows a micro Vickers hardness of 100 to 120.
- HMV micro Vickers hardness
- the copper-iron-manganese alloy whose hardness is lower than the hardness of the part of the structure is dispersed and contained. Good conformability and improved sliding characteristics.
- the mixture was mixed for 20 minutes to obtain a mixed powder (copper component 10.86% by mass, manganese component 0.65% by mass, iron component 85.49% by mass, carbon component 3% by mass). Next, this mixed powder was loaded into a mold and molded at a molding pressure of 5 ton / cm 2 to obtain a square compact.
- This rectangular green compact was placed in a heating furnace adjusted to a hydrogen gas atmosphere, solid-phase sintered at a temperature of 1000 ° C. for 60 minutes, and then taken out from the heating furnace to obtain a rectangular iron-based sintered material.
- This iron-based sintered material was machined to obtain an iron-based sintered sliding member having a side of 30 mm and a thickness of 5 mm.
- the density of this iron-based sintered sliding member is 6.2 g / cm 3 , and the structure exhibits a structure in which pearlite and a part of ferrite coexist as shown in FIG. 1 and there is no generation of free cementite in the structure. It was confirmed that the structure contained a copper-iron-manganese alloy in a dispersed manner.
- the part of the structure in which pearlite and ferrite partially coexist is a micro Vickers hardness (HMV) 350, and the part of the copper-iron-manganese alloy dispersed and contained in the structure has a micro Vickers hardness of 100. there were. Subsequently, this iron-based sintered sliding member was subjected to oil impregnation treatment to obtain an iron-based oil impregnated sintered sliding member having an oil content of 12% by volume.
- HMV micro Vickers hardness
- Example 2 A mixed powder similar to Example 1 (copper component 10.86% by mass, manganese component 0.65% by mass, iron component 85.49% by mass, carbon component 3% by mass) was obtained, and this mixed powder was placed in the mold. And molded at a molding pressure of 5 ton / cm 2 to obtain a green compact.
- This rectangular green compact was placed in a heating furnace adjusted to a hydrogen gas atmosphere, liquid phase sintered at a temperature of 1100 ° C. for 60 minutes, and then taken out from the heating furnace to obtain a rectangular iron-based sintered material.
- This iron-based sintered material was machined to obtain an iron-based sintered sliding member having a side of 30 mm and a thickness of 5 mm.
- the density of this iron-based sintered sliding member is 6.7 g / cm 3
- the structure is a structure in which pearlite and a part of ferrite coexist as shown in FIGS. 2 and 3, and free cementite in the structure.
- a copper-iron-manganese alloy was dispersed and contained in a network at the grain boundaries of the structure.
- the part of the structure in which pearlite and ferrite partially coexist is a micro Vickers hardness (HMV) 400
- the part of the copper-iron-manganese alloy dispersed and contained in the network at the grain boundary of the structure is a micro Vickers hardness (HMV).
- the Vickers hardness was 110.
- this iron-based sintered sliding member was subjected to oil impregnation treatment to obtain an iron-based oil impregnated sintered sliding member having an oil content of 10% by volume.
- -10% by mass of iron-manganese alloy powder (same as in Example 1) and 3% by mass of natural graphite powder (same as in Example 1) with an average particle size of 40 ⁇ m as a carbon component were mixed with a V-type mixer. Mixed for a minute to obtain a mixed powder (copper component 9.05 mass%, manganese component 0.54 mass%, iron component 87.41 mass%, carbon component 3 mass%).
- this mixed powder was loaded into a mold and molded at a molding pressure of 5 tons / cm 2 to obtain a cylindrical green compact.
- This cylindrical green compact was placed in a heating furnace adjusted to a hydrogen gas atmosphere, liquid phase sintered at a temperature of 1100 ° C. for 60 minutes, and then taken out from the heating furnace to obtain a cylindrical iron-based sintered material.
- the iron-based sintered material was machined to obtain an iron-based sintered sliding member having an inner diameter of 20 mm, an outer diameter of 28 mm, and a length of 15 mm.
- the density of this iron-based sintered sliding member is 6.6 g / cm 3 , and the structure exhibits a structure in which pearlite and a part of ferrite coexist as shown in FIG. 4 and there is no generation of free cementite in the structure.
- a mixed powder similar to Example 2 (copper component 10.86% by mass, manganese component 0.65% by mass, iron component 85.49% by mass, carbon component 3% by mass) was obtained, and this mixed powder was placed in the mold. And molded at a molding pressure of 5 tons / cm 2 to obtain a cylindrical green compact.
- This cylindrical green compact was placed in a heating furnace adjusted to a hydrogen gas atmosphere, sintered at a temperature of 1100 ° C. for 60 minutes, and then taken out from the heating furnace to obtain a cylindrical iron-based sintered material.
- the iron-based sintered material was machined to obtain an iron-based sintered sliding member having an inner diameter of 20 mm, an outer diameter of 28 mm, and a length of 15 mm.
- This iron-based sintered sliding member is 6.7 g / cm 3 , and the structure exhibits a structure in which pearlite and a part of ferrite coexist as shown in FIG. 5, and free cementite is not generated in the structure. Then, it was confirmed that a copper-iron-manganese alloy was dispersed and contained in a network at the grain boundaries of the structure.
- the part of the structure where pearlite and some ferrite coexist is the micro Vickers hardness (HMV) 450, and the part of the copper-iron-manganese alloy dispersed and contained in the structure is the micro Vickers hardness 120. there were.
- this iron-based sintered sliding member was subjected to oil impregnation treatment to obtain an iron-based oil impregnated sintered sliding member having an oil content of 10% by volume. (Comparative example)
- An iron-based sintered material similar to the SMF type 4 iron-based sintered material defined in Japanese Industrial Standard JISZ2550 was produced. That is, 3% by mass of electrolytic copper powder with an average particle size of 100 ⁇ m and natural graphite powder with an average particle size of 40 ⁇ m as a carbon component (as in Example 1 above) with respect to atomized iron powder with the average particle size of 70 ⁇ m (same as in Example 1). (Same) 0.7% by mass was mixed and mixed for 20 minutes with a V-type mixer to obtain a mixed powder (copper component 3% by mass, carbon component 0.7% by mass, balance iron component). Next, this mixed powder was loaded into a mold and molded at a molding pressure of 4 ton / cm 2 to obtain a cylindrical green compact.
- This rectangular green compact was placed in a heating furnace adjusted to a hydrogen gas atmosphere, sintered at a temperature of 1120 ° C. for 60 minutes, and then taken out from the heating furnace to obtain a cylindrical iron-based sintered material.
- the iron-based sintered material was machined to obtain an iron-based sintered sliding member having an inner diameter of 20 mm, an outer diameter of 28 mm, and a length of 15 mm.
- the density of this iron-based sintered member was 6.5 g / cm 3 .
- This iron-based sintered sliding member was subjected to oil impregnation treatment to obtain an iron-based oil impregnated sintered sliding member having an oil content of 15% by volume. (Evaluation test)
- Lubrication conditions Lithium grease is applied to the sliding surface at the start of the test.
- a plate-shaped bearing test piece (iron-based oil-impregnated sintered sliding member) 10 is fixed, and a cylindrical body 12 serving as a mating member is placed on the plate-shaped bearing test piece 10 from above (arrow The cylindrical body 12 is rotated in the direction of arrow B while a predetermined load is applied to the surface 11 (from the direction A), and the friction coefficient between the plate bearing test piece 10 and the cylindrical body 12 and a predetermined test time The amount of wear of the plate bearing test piece 10 was measured.
- Lubrication condition Lithium grease is applied to the sliding surface at the start of the test.
- a cylindrical bearing test piece (iron-based oil-impregnated sintered sliding member) 10a is fixed by applying a load, and the rotating shaft 12a as a mating member is rotated at a constant sliding speed.
- the coefficient of friction between the cylindrical bearing test piece 10a and the rotating shaft 12a and the wear amount of the cylindrical bearing test piece 10a after a predetermined test time were measured.
- the present invention is an iron-based sintered sliding member composed of iron powder, copper-iron-manganese alloy powder, and carbon powder, comprising a copper component of 2.67 to 18.60 mass%, manganese Consists of 0.12 to 1.20% by mass of component, 1.0 to 5.0% by mass of carbon component, and remaining iron component, and the substrate exhibits a pearlite structure or a structure in which pearlite and a part of ferrite coexist, and the structure of the substrate
- the copper-iron-manganese alloy is dispersed and contained in the base material, and the copper-iron-manganese alloy having a hardness lower than the hardness of the structure of the substrate is dispersed in the structure. In motion, it has good conformability and exhibits excellent sliding characteristics. Therefore, the iron-based sintered sliding member of the present invention can be applied to sliding applications such as bearings, sliding plates and washers.
Abstract
Description
10a 円筒状軸受試験片(鉄系含油焼結摺動部材)
12 円筒体(相手材)
12a 回転軸(相手材)
(比較例)
(評価試験)
揺動角度 ±45°
試験時間 100時間
相手材 軸受鋼(SUJ2焼入れ)
潤滑条件 試験開始時に摺動面にリチウム系グリース塗布
試験方法 図7に示すように、円筒状軸受試験片(鉄系含油焼結摺動部材)10aに荷重を負荷して固定し、相手材となる回転軸12aを一定のすべり速度で揺動回転させ、円筒状軸受試験片10aと回転軸12aとの間の摩擦係数及び所定の試験時間後の円筒状軸受試験片10aの摩耗量を測定した。
Claims (8)
- 鉄粉末と銅-鉄-マンガン合金粉末と炭素粉末とから成る鉄系焼結摺動部材において、
銅成分2.67~18.60質量%、マンガン成分0.12~1.20質量%、炭素成分1.0~5.0質量%、残部鉄成分から成り、素地の組織がパーライト組織またはパーライトと一部フェライトの共存組織を呈すると共に、該素地の組織中に炭素及び銅-鉄-マンガン合金が分散していることを特徴とする鉄系焼結摺動部材。 - 前記銅-鉄-マンガン合金は、素地の組織の粒界に網目状に分散して析出しているものであることを特徴とする請求項1に記載の鉄系焼結摺動部材。
- 前記素地の組織は、マイクロビッカース硬さ(HMV)が350~450を示し、該組織中に分散した銅-鉄-マンガン合金のマイクロビッカース硬さ(HMV)が100~120を示すものであることを特徴とする請求項1又は2に記載の鉄系焼結摺動部材。
- 前記炭素は、天然黒鉛または人造黒鉛から成るものであることを特徴とする請求項1から3までのうちのいずれか一項に記載の鉄系焼結摺動部材。
- 潤滑油が10~15容量%の割合で含有されていることを特徴とする請求項1から4までのうちのいずれか一項に記載の鉄系焼結摺動部材。
- 主成分をなす鉄粉末に対し、マンガン4~6質量%と鉄3~5質量%と残部銅から成る合金粉末3~20質量%及び炭素粉末1~5質量%をそれぞれ配合し、混合して混合粉末を形成したのち、該混合粉末を金型に装填して所望の形状の圧粉体を成形し、この圧粉体を中性もしくは還元性雰囲気に調整した加熱炉内で1000~1100℃の温度で30~90分間焼結することを特徴とする鉄系焼結摺動部材の製造方法。
- 前記炭素として、天然黒鉛または人造黒鉛から成るものを使用することを特徴とする請求項6に記載の鉄系焼結摺動部材の製造方法。
- 圧粉体を焼結して鉄系焼結摺動部材を得た後に、これに含油処理を施し、10~15容量%の割合で潤滑油を含油することを特徴とする請求項6又は7に記載の鉄系焼結摺動部材の製造方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010800317863A CN102471853B (zh) | 2009-08-19 | 2010-05-24 | 铁系烧结滑动部件及其制造方法 |
US13/381,874 US20120107168A1 (en) | 2009-08-19 | 2010-05-24 | Iron-based sintered sliding member and manufacturing method thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-190176 | 2009-08-19 | ||
JP2009190176A JP5367502B2 (ja) | 2009-08-19 | 2009-08-19 | 鉄系焼結摺動部材及びその製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011021418A1 true WO2011021418A1 (ja) | 2011-02-24 |
Family
ID=43606876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/058741 WO2011021418A1 (ja) | 2009-08-19 | 2010-05-24 | 鉄系焼結摺動部材及びその製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20120107168A1 (ja) |
JP (1) | JP5367502B2 (ja) |
CN (1) | CN102471853B (ja) |
WO (1) | WO2011021418A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5786755B2 (ja) * | 2012-02-16 | 2015-09-30 | トヨタ自動車株式会社 | 鉄系焼結材料の製造方法 |
JP6253134B2 (ja) * | 2012-09-03 | 2017-12-27 | ポーライト株式会社 | 焼結軸受 |
KR102137424B1 (ko) * | 2014-03-04 | 2020-07-24 | 포라이트 가부시키가이샤 | 소결 베어링 |
KR102449381B1 (ko) * | 2014-03-04 | 2022-10-05 | 포라이트 가부시키가이샤 | 소결 베어링 |
CN105090246B (zh) * | 2015-08-04 | 2017-05-10 | 华中科技大学 | 一种用于制造含油轴承的浸渗模具及含油轴承的制造方法 |
SE541269C2 (en) | 2015-09-18 | 2019-05-28 | Jfe Steel Corp | Mixed powder for powder metallurgy, sintered body, and method of manufacturing sintered body |
JP6267294B2 (ja) * | 2016-08-12 | 2018-01-24 | ポーライト株式会社 | 焼結軸受の製造方法 |
WO2019059248A1 (ja) | 2017-09-20 | 2019-03-28 | 株式会社ダイヤメット | 焼結含油軸受 |
JP7111484B2 (ja) * | 2018-03-27 | 2022-08-02 | 大同メタル工業株式会社 | 摺動部材 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11302804A (ja) * | 1998-04-17 | 1999-11-02 | Mitsubishi Materials Corp | 鉄基焼結合金製シンクロナイザーリング |
JP2001123253A (ja) * | 1999-10-28 | 2001-05-08 | Oiles Ind Co Ltd | 鉄系焼結摺動部材ならびにその製造方法 |
JP2004018940A (ja) * | 2002-06-17 | 2004-01-22 | Oiles Ind Co Ltd | 鉄系焼結摺動部材の製造方法及び鉄系焼結摺動部材 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4059023A (en) * | 1976-05-06 | 1977-11-22 | Aspro, Inc. | One-piece sintered pulley hub construction |
JPS6023188B2 (ja) * | 1978-09-07 | 1985-06-06 | 住友電気工業株式会社 | 焼結鋼及びその製造法 |
JPS5819403A (ja) * | 1981-07-27 | 1983-02-04 | Mitsubishi Metal Corp | 鋳鉄組織を有する焼結材料の製造法 |
JPS58126959A (ja) * | 1982-01-22 | 1983-07-28 | Mitsubishi Metal Corp | 鋳鉄組織を有する焼結材料及びその製造方法 |
US6485540B1 (en) * | 2000-08-09 | 2002-11-26 | Keystone Investment Corporation | Method for producing powder metal materials |
JP2005024094A (ja) * | 2003-06-10 | 2005-01-27 | Ntn Corp | すべり軸受 |
US7998238B2 (en) * | 2003-07-31 | 2011-08-16 | Komatsu Ltd. | Sintered sliding member and connecting device |
EP1975260B1 (en) * | 2006-01-16 | 2016-03-23 | Oiles Corporation | Copper base sintered slide member |
US20080146467A1 (en) * | 2006-01-26 | 2008-06-19 | Takemori Takayama | Sintered Material, Ferrous Sintered Sliding Material, Producing Method of the Same, Sliding Member, Producing Method of the Same and Coupling Device |
-
2009
- 2009-08-19 JP JP2009190176A patent/JP5367502B2/ja active Active
-
2010
- 2010-05-24 US US13/381,874 patent/US20120107168A1/en not_active Abandoned
- 2010-05-24 CN CN2010800317863A patent/CN102471853B/zh not_active Expired - Fee Related
- 2010-05-24 WO PCT/JP2010/058741 patent/WO2011021418A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11302804A (ja) * | 1998-04-17 | 1999-11-02 | Mitsubishi Materials Corp | 鉄基焼結合金製シンクロナイザーリング |
JP2001123253A (ja) * | 1999-10-28 | 2001-05-08 | Oiles Ind Co Ltd | 鉄系焼結摺動部材ならびにその製造方法 |
JP2004018940A (ja) * | 2002-06-17 | 2004-01-22 | Oiles Ind Co Ltd | 鉄系焼結摺動部材の製造方法及び鉄系焼結摺動部材 |
Also Published As
Publication number | Publication date |
---|---|
JP5367502B2 (ja) | 2013-12-11 |
CN102471853B (zh) | 2013-07-17 |
JP2011042817A (ja) | 2011-03-03 |
CN102471853A (zh) | 2012-05-23 |
US20120107168A1 (en) | 2012-05-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5367502B2 (ja) | 鉄系焼結摺動部材及びその製造方法 | |
JP5247329B2 (ja) | 鉄系焼結軸受およびその製造方法 | |
JP4886545B2 (ja) | 焼結含油軸受およびその製造方法 | |
WO2014065316A1 (ja) | 焼結軸受 | |
JP5308123B2 (ja) | 高強度組成鉄粉とそれを用いた焼結部品 | |
JP2011094167A (ja) | 鉄銅系焼結摺動部材およびその製造方法 | |
JP6816079B2 (ja) | 振動モータ | |
JP6302259B2 (ja) | 焼結軸受の製造方法 | |
JP6760807B2 (ja) | 銅基焼結合金含油軸受 | |
JP6038522B2 (ja) | 焼結軸受 | |
JP2009114486A (ja) | 焼結助剤及び焼結用アルミニウム含有銅系合金粉末並びに該焼結用アルミニウム含有銅系合金粉末を焼結してなる焼結体 | |
JP5972588B2 (ja) | 焼結軸受の製造方法 | |
JP2009079136A (ja) | 銅系含油焼結摺動部材 | |
JP6424983B2 (ja) | 鉄系焼結含油軸受 | |
WO2018100660A1 (ja) | 鉄系焼結含油軸受 | |
JP2009007433A (ja) | 銅系含油焼結摺動部材及びその製造方法 | |
WO2015050200A1 (ja) | 焼結軸受、およびその製造方法 | |
JP6038460B2 (ja) | 焼結軸受の製造方法 | |
JP2012162771A (ja) | 鉄系焼結摺動部材及びその製造方法 | |
JP2001107162A (ja) | 青銅系焼結合金とそれを用いた軸受及び製造方法 | |
JP2019065323A (ja) | 鉄系焼結軸受及び鉄系焼結含油軸受 | |
JP4109023B2 (ja) | 鉄系焼結摺動部材の製造方法及び鉄系焼結摺動部材 | |
JPH01230740A (ja) | 含油軸受用焼結合金材およびその製造法 | |
JP2008297361A (ja) | 銅系含油焼結摺動部材 | |
JP6462053B2 (ja) | 焼結軸受 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080031786.3 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10809764 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13381874 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 10809764 Country of ref document: EP Kind code of ref document: A1 |