WO1991009981A1 - Palier en alliage fritte - Google Patents

Palier en alliage fritte Download PDF

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Publication number
WO1991009981A1
WO1991009981A1 PCT/JP1990/001741 JP9001741W WO9109981A1 WO 1991009981 A1 WO1991009981 A1 WO 1991009981A1 JP 9001741 W JP9001741 W JP 9001741W WO 9109981 A1 WO9109981 A1 WO 9109981A1
Authority
WO
WIPO (PCT)
Prior art keywords
powder
sintered
parts
iron
alloy
Prior art date
Application number
PCT/JP1990/001741
Other languages
English (en)
Japanese (ja)
Inventor
Isamu Kikuchi
Masanori Kikuchi
Original Assignee
Isamu Kikuchi
Masanori Kikuchi
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Isamu Kikuchi, Masanori Kikuchi filed Critical Isamu Kikuchi
Publication of WO1991009981A1 publication Critical patent/WO1991009981A1/fr
Priority to GB9115900A priority Critical patent/GB2252328B/en

Links

Classifications

    • 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
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0425—Copper-based alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/0089—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with other, not previously mentioned inorganic compounds as the main non-metallic constituent, e.g. sulfides, glass
    • 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
    • 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

Definitions

  • the present invention relates to a sintered alloy bearing, which has good mechanical strength and corrosion resistance, and is also excellent in familiarity.
  • a copper-based additive containing copper in the range of 5 to 30% -a copper-based additive, or a additive such as the one disclosed in JP-A-56-90954 that adds bronze to iron- Bronze-based and alloy bearings such as JP 56-51554 and JP 56-96001 in which brass is added to iron have been proposed.
  • JP-A-56-90954 that adds bronze to iron- Bronze-based and alloy bearings such as JP 56-51554 and JP 56-96001 in which brass is added to iron
  • the amount of each alloying element and the porosity were adjusted as shown below to maintain the characteristics of the high Fe content bearing material while maintaining the good compatibility and other characteristics of the bronze-based bearing material.
  • the present invention has been completed.
  • Fe 20 to 80 wt%, Cu: 15 to 77 wt%, Zn: 1 to 26 wt%, Pb: 0.5 to 7 wt% or less, Sn: 0.5 to 7 wt%, and the balance is unavoidable.
  • a solid lubricant such as graphite or molybdenum disulfide (7 wt% or less) should be added to the alloy element ratio described above, and the porosity should be 8 to 30 VO J?%.
  • the sintered alloy body obtained can have favorable mechanical strength and low cost.
  • the preferred range is 35% or more, more preferably 45% or more.
  • the upper limit of this Fe is generally 80%. Exceeding this limit reduces the addition amount of other components to be described later to reduce corrosion resistance, It is difficult to effectively obtain the familiarity.
  • the preferable upper limit is 65%, and the preferable upper limit is 60%.
  • Cu is essential for imparting corrosion resistance, stabilizing the structure of the sintered alloy body, and obtaining a preferable additive distribution state of Zn, Sn, Pb, etc., which will be described later. Is required to be 15% or more, while the upper limit is 77%. Exceeding this limit limits the addition amounts of Fe, Zn, Sn, and Pb, and It is difficult to obtain the harmonized characteristics of The preferable range is 20 to 50%, and more preferably 30 to 40%.
  • Zn can obtain preferable corrosion resistance in the sintered umbrella body in which the skeletal effect of the Fe powder is secured as described above. If the amount of Fe powder is less than 1%, the effect is insufficient due to the presence of other components even if the amount of Fe powder is 20% .On the other hand, if the amount of Fe powder exceeds 26%, the effect is saturated. Not only that, but the amount of other components added is limited, which is not preferable. A preferable range is 3 to 18%.
  • Pb plays a major role in obtaining the desired conformability in the sintered alloy body that adopts the skeletal function of the Fe powder in the present invention, and if its amount is less than 0.5%, it is expected. It is difficult to improve the familiarity. Also, adding more than 7% would lead to a rapid decrease in the strength of the calcined and bonded metal body obtained even under conditions where the amount of Fe powder was large, and even under the conditions. This is not desirable because it will significantly reduce the benefits.
  • An appropriate addition amount range is 1.0 to 5.0%, but a more appropriate range is 1.5 to 4%, which is appropriately determined in consideration of the amount of Fe used.
  • Sn is the main component for avoiding the strength deterioration due to the addition of Pb in the case of this range in which the familiarity is improved by using Pb as described above, and is 0.5% or less. The effect is insufficient. On the other hand, it is not preferable to add it in excess of 7% because it will result in segregation and the effect will be saturated even under the condition that a large amount of Pb is contained.
  • the one according to the present invention preferably contains a solid lubricant such as graphite or molybdenum disulfide as the bearing material, and the amount thereof is 0.5%.
  • a preferable range is about 0.5 to 2%.
  • Cu, Zn, and Sn as described above may be added and contained alone, but they may be added as an alloy body. That is, it is to be used as a brass powder, and the brass is mainly composed of Cu and Zn and contains a small amount of Sn, Pb, k, Fe, etc., and this is used to further add Pb, Sn, etc. Is generally preferred.
  • brass alloyed with Cu and Zn not only eliminates the trouble of adding and mixing them separately to homogenize them, but also prevents the occurrence of three phases due to Zn fracturing, etc. Get it.
  • the porosity of the sintered alloy body obtained by compaction molding or sizing is 8 to 30% . If the porosity is less than 8%, the oil content in this type of product that is generally used as a bearing after impregnating oil is low. It is not preferable because it cannot be obtained properly.
  • the upper limit of porosity is about 30% .For those with porosity exceeding 30%, use a large amount of grade iron powder and use Cu, Zn, Sn, etc. to secure the strength. Even if it is treated, the proper strength as a sintered alloy body cannot be obtained.
  • a preferable range of porosity is about 12 to 25%. (Example)
  • the present inventors changed the composition of the sintered alloy with various contents of Fe, Cu, Zn, Pb and Sn to iron powder, brass powder and lead powder (or And lead oxide). That is, as described above, it is preferable to use brass powder, which is an alloy of Cu and Zn, because they contain both Cu and Zn. In some cases, brass powder having a general copper composition is further used. One of Zn, Pb, and Sn, or two or more kinds of which were added and increased in amount, was melted and prepared as a spray-treated powder, and such a brass powder was adopted.
  • Some examples of the composition of the sintered alloy of the present invention thus prepared are as in Production Examples 1 to 12 in Table 1 below.
  • Comparative Example 2 outside the scope of the present invention and Comparative Example 3 which is a bronze-based alloy with Cu: 90% and Sn: 9.5% were manufactured.
  • the iron powder used was 150-250 mesh, and the bronze iron powder and solder powder were 60-350 mesh.
  • the mixture of these powders had an outer diameter of 7 mm, A bearing material with an inner diameter of 2 mm and a total length of 2.5 nrn was formed, and this was placed by placing a mesh material in an iron container and charging it. Similarly, an iron lid was applied and sintered in a reductive atmosphere.
  • a sintered product having a standard constant outer diameter of 7.02, sizing and a porosity of 20%, an inner diameter of 2.01 mm and a length of 2.5 mm.
  • the composition and sintering conditions of the product are as follows.
  • Production example 1 80 parts of iron powder, 18 parts of copper powder of Cu-17% Z ⁇ and 2 parts of Pb-50% Sn solder powder were mixed and molded into the above bearing shape. Burned in ⁇ ⁇ ⁇ and / o
  • Production Example 2 20 parts of iron powder, 77 parts of electrolytic copper powder, 1 part of zinc powder, and 2 parts of Pb-50% Sn solder powder were mixed and molded, and then sintered at 98 (TC).
  • Production Example 3 32 parts of iron powder was mixed with 65 parts of brass powder of 40% Zn Cu and 3 parts of solder powder of Pb-17% Sn, and the mixture was molded and sintered at 850 eC .
  • Production Example 4 70 parts of Cu-7% Zn-10% Pb-10% Sn atomized alloy powder was mixed with 30 parts of iron powder, molded, and sintered at 850.
  • Production Example 5 50 parts of iron powder, 50 parts of Cu-30% Zn-4% Sn-6% Pb spray alloy powder were mixed and molded, and sintered at 830.
  • Production Example 6 50 parts of Cu-31% Zn-2% Sn-4% Pb atomized alloy powder was mixed with 52 parts of iron powder, molded, and sintered at 830.
  • Production Example 7 60 parts of iron powder was mixed with 40 parts of Cu-25% Zn-5% Sn-4% Pb atomized alloy powder, and the mixture was molded and sintered at 830.
  • Production Example 8 iron powder 44 parts Cu- 14% Zn- 5% Sn- 9 % were mixed and molded spray alloy powder 56 parts of Pb, which was sintered at 830 e C.
  • Production Example 9 25.5 parts of iron powder, 65 parts of brass powder of ⁇ -30% ⁇ 0 and 9.5 parts of solder powder of Pb-53% Sn were mixed and molded, and this was molded at 860 ° C. Sintered with.
  • Production Example 10 50 parts of Cu-30% Zn-8%? B- 2% Sn spray alloy powder and 0.5 parts of graphite powder were mixed with 49.5 parts of iron powder and molded into 850 e C. Sintered with.
  • Production Example 11 49.5 parts of iron powder, 50 parts of Cu-30% Zn-8%? B ⁇ 2% Sn atomized alloy powder and 0.5 parts of molybdenum disulfide powder were mixed and molded. Sintered at e C.
  • Production Example 12 Mix 50 parts of iron powder with 48 parts of Cu-31% Zn-5% Pb-2% Sn atomized alloy powder, 1 part of graphite powder, and 1 part each of molybdenum disulfide powder and mold. , Which was sintered at 870 ° C.
  • Comparative Example 1 A mixture of 80 parts of iron powder and 20 parts of copper powder was molded and sintered at 1000 ° C [JIS SBF 2218].
  • Comparative Example 2 49.5 parts of brass powder of Cu-30% Zn (containing 0.6% Pb and 0.4% Sn as impurities) in 50 parts of iron powder and 5% graphite. What I did 890.
  • C Comparative Example 2: 49.5 parts of brass powder of Cu-30% Zn (containing 0.6% Pb and 0.4% Sn as impurities) in 50 parts of iron powder and 5% graphite. What I did 890.
  • Comparative Example 3 90 parts of copper powder, 9.5 parts of tin powder and 0.5 part of graphite powder were mixed and sintered at 78 CTC [UIS SBK 2118].
  • the strength is excellent, and moreover, it is preferable.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Sliding-Contact Bearings (AREA)
  • Powder Metallurgy (AREA)

Abstract

On produit un palier en un alliage fritté par moulage-compactage et frittage d'une composition qui contient entre 20 et 80 % en poids de fer, entre 15 et 77 % en poids de cuivre, entre 1 et 26 % en poids de zinc, entre 0,5 et 7 % en poids de plomb, ou moins, entre 0,5 et 7 % en poids d'étain, le résidu étant formé par des impuretés inévitables, avec une porosité entre 8 et 30 % en volume. Etant donné que cet alliage a non seulement une résistance mécanique et une résistance à la corrosion normales, mais aussi un excellent ajustement, il convient en particulier comme matériau constituant les paliers d'un moteur utilisé dans un appareil audio.
PCT/JP1990/001741 1989-12-28 1990-12-28 Palier en alliage fritte WO1991009981A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9115900A GB2252328B (en) 1989-12-28 1991-07-23 Sintered alloy bearing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP33875089A JPH03199348A (ja) 1989-12-28 1989-12-28 焼結合金軸受
JP1/338750 1989-12-28

Publications (1)

Publication Number Publication Date
WO1991009981A1 true WO1991009981A1 (fr) 1991-07-11

Family

ID=18321106

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1990/001741 WO1991009981A1 (fr) 1989-12-28 1990-12-28 Palier en alliage fritte

Country Status (3)

Country Link
JP (1) JPH03199348A (fr)
GB (1) GB2252328B (fr)
WO (1) WO1991009981A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108130471A (zh) * 2017-12-28 2018-06-08 唐山为民职业环境检测有限责任公司 一种防辐射合金
CN111961984A (zh) * 2019-05-20 2020-11-20 海安县鹰球粉末冶金有限公司 一种粉末冶金含油轴承配方

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5696001A (en) * 1979-12-29 1981-08-03 Tatsunosuke Kikuchi Sintered alloy
JPS5896850A (ja) * 1981-12-04 1983-06-09 Hitachi Powdered Metals Co Ltd 低摩耗焼結含油摺動材料
JPS58189361A (ja) * 1982-04-28 1983-11-05 Mitsubishi Metal Corp なじみ性および潤滑性のすぐれたＦｅ基焼結合金製含油軸受

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5651554A (en) * 1979-10-01 1981-05-09 Shiyooraito:Kk Machine parts obtained by powder metallurgical method
GB2147753A (en) * 1983-10-07 1985-05-15 Philips Electronic Associated Voltage controlled oscillator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5696001A (en) * 1979-12-29 1981-08-03 Tatsunosuke Kikuchi Sintered alloy
JPS5896850A (ja) * 1981-12-04 1983-06-09 Hitachi Powdered Metals Co Ltd 低摩耗焼結含油摺動材料
JPS58189361A (ja) * 1982-04-28 1983-11-05 Mitsubishi Metal Corp なじみ性および潤滑性のすぐれたＦｅ基焼結合金製含油軸受

Also Published As

Publication number Publication date
GB2252328A (en) 1992-08-05
JPH03199348A (ja) 1991-08-30
GB9115900D0 (en) 1991-09-04
GB2252328B (en) 1994-05-18

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