JP6309215B2 - 焼結機械部品の製造方法及びこれに用いる混合粉末 - Google Patents
焼結機械部品の製造方法及びこれに用いる混合粉末 Download PDFInfo
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- 239000011812 mixed powder Substances 0.000 title claims description 22
- 238000004519 manufacturing process Methods 0.000 title description 6
- 239000000843 powder Substances 0.000 claims description 88
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 68
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 27
- 238000005245 sintering Methods 0.000 claims description 25
- 238000002156 mixing Methods 0.000 claims description 19
- 238000009792 diffusion process Methods 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 18
- 238000000465 moulding Methods 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 11
- 239000000956 alloy Substances 0.000 claims description 11
- 239000012535 impurity Substances 0.000 claims description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 229910017116 Fe—Mo Inorganic materials 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 238000011156 evaluation Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 238000000748 compression moulding Methods 0.000 description 7
- 230000001965 increasing effect Effects 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 6
- 239000011362 coarse particle Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910021383 artificial graphite Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910017318 Mo—Ni Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- PFBWBEXCUGKYKO-UHFFFAOYSA-N ethene;n-octadecyloctadecan-1-amine Chemical compound C=C.CCCCCCCCCCCCCCCCCCNCCCCCCCCCCCCCCCCCC PFBWBEXCUGKYKO-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- 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
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/105—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing inorganic lubricating or binding agents, e.g. metal salts
-
- 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
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
-
- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
-
- 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
- C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
-
- 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
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- F16H—GEARING
- F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
- F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
- F16H53/025—Single-track cams for single-revolution cycles; Camshafts with such cams characterised by their construction, e.g. assembling or manufacturing features
-
- 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
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
-
- 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
- B22F3/02—Compacting only
- B22F2003/026—Mold wall lubrication or article surface lubrication
-
- 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
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/35—Iron
-
- 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
- B22F2302/00—Metal Compound, non-Metallic compound or non-metal composition of the powder or its coating
- B22F2302/40—Carbon, graphite
-
- 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
- B22F2304/00—Physical aspects of the powder
- B22F2304/10—Micron size particles, i.e. above 1 micrometer up to 500 micrometer
-
- 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
Description
まず、混合粉末中の黒鉛粉末の添加量を異ならせた場合の焼結体の特性を比較した。具体的には、平均粒径3.4μmの人造黒鉛の添加量を、0〜0.8wt%の範囲で異ならせた試験片を作成し、各試験片の焼結密度、表面硬さ、内部硬さ、圧環強さ、及びリング圧縮疲労強さを測定した。尚、焼結密度及び表面硬さは熱処理前の焼結体の値であり、内部固さ、圧環強さ、及びリング圧縮疲労強さは熱処理後の焼結体の値である。圧環強さの評価基準は、1600MPa未満のときは×、1600〜1750MPaのときは△、1750〜1900MPaのときは○、1900MPa以上の時は◎とした。リング圧縮疲労強さの評価基準は、290MPa未満の時は×、290〜315MPaの時は△、315〜340MPaの時は○、340MPa以上の時は◎とした。その結果を以下の表1及び表2に示す。
次に、黒鉛粉末の粒径を異ならせた場合の焼結体の特性を比較した。具体的には、平均粒径を1.0〜10.0μmの範囲で異ならせた人造黒鉛を用いて試験片を作成し、これらの試験片の焼結密度を測定した。その結果を以下の表3に示す。焼結密度の評価基準は、7.47g/cm3未満のときは×、7.47〜7.50g/cm3のときは△、7.50g/cm3以上のときは○とした。
次に、合金粉末の粒度を異ならせた場合の焼結体の特性を比較した。具体的には、分級を行った合金鋼粉を用いた試験片(実施品)と、分級を行わなかった合金鋼粉を用いた試験片(比較品)とを比較した。分級は、合金鋼粉を、目開き180μmの篩を通過させ、粗大な粒子を取り除くことで行われる。その結果を以下の表4に示す。また、実施品及び比較品の断面観察を行った結果、比較品の断面は最大約150μmの粗大空孔(黒い部分が空孔)が観察された{図2(A)参照}。これに対し、実施品の断面には粗大空孔はほとんど観察されなかった{図2(B)参照}。
合金鋼粉中のNiの添加量を異ならせた試験片の焼結密度及び圧環強さを測定した。その結果を以下の表5及び表6に示す。焼結密度の評価基準は、7.50g/cm3未満のときは×、7.50〜7.55g/cm3のときは△、7.55〜7.60g/cm3以上のときは○、7.60g/cm3のときは◎とした。圧環強さの評価基準は、上記(1)と同様とした。
合金鋼粉中のMoの添加量を異ならせた試験片の焼結密度及び圧環強さを測定した。その結果を以下の表7及び表8に示す。焼結密度の評価基準は、上記(4)と同様とした。圧環強さの評価基準は、上記(1)と同様とした。
Claims (6)
- 合金鋼粉及び黒鉛粉末を含む混合粉末であって、
前記合金鋼粉が、Niを1.5〜2.3mass%、Moを0.5〜1.5mass%含み、残部がFe及び不可避不純物からなる拡散合金鋼粉であり、前記合金鋼粉100mass%に対して前記黒鉛粉末が0.15〜0.25mass%であり、前記黒鉛粉末の平均粒子径が8μm以下である混合粉末。 - 合金鋼粉及び黒鉛粉末を含む混合粉末であって、
前記合金鋼粉が、Niを0.45〜0.9mass%、Moを0.6〜1.1mass%含み、残部がFe及び不可避不純物からなる完全合金鋼粉であり、前記合金鋼粉100mass%に対して前記黒鉛粉末が0.15〜0.25mass%であり、前記黒鉛粉末の平均粒子径が8μm以下である混合粉末。 - 前記合金鋼粉が、目開き180μmの篩を通過した粉末である請求項1又は2記載の混合粉末。
- 前記合金鋼粉が、Fe-Mo合金の周囲にNiが拡散付着した拡散合金鋼粉である請求項1記載の混合粉末。
- Niを1.5〜2.3mass%、Moを0.5〜1.5mass%含み、残部がFe及び不可避不純物からなる拡散合金鋼粉100mass%に対して、平均粒子径が8μm以下の黒鉛粉末を0.15〜0.25mass%混合して混合粉末を得る混合工程と、前記混合粉末を圧縮成形して圧粉体を得る圧粉工程と、前記圧粉体を所定の焼結温度で焼結して、密度が7.5g/cm3以上の焼結体を得る焼結工程とを含む焼結機械部品の製造方法。
- Niを0.45〜0.9mass%、Moを0.6〜1.1mass%含み、残部がFe及び不可避不純物からなる完全合金鋼粉100mass%に対して、平均粒子径が8μm以下の黒鉛粉末を0.15〜0.25mass%混合して混合粉末を得る混合工程と、前記混合粉末を圧縮成形して圧粉体を得る圧粉工程と、前記圧粉体を所定の焼結温度で焼結して、密度が7.5g/cm3以上の焼結体を得る焼結工程とを含む焼結機械部品の製造方法。
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JP2013139080A JP6309215B2 (ja) | 2013-07-02 | 2013-07-02 | 焼結機械部品の製造方法及びこれに用いる混合粉末 |
CN201480035641.9A CN105324504A (zh) | 2013-07-02 | 2014-06-03 | 烧结机械部件及其制造方法 |
EP14819452.5A EP3018228A4 (en) | 2013-07-02 | 2014-06-03 | Sintered mechanical component and manufacturing method therefor |
PCT/JP2014/064707 WO2015001894A1 (ja) | 2013-07-02 | 2014-06-03 | 焼結機械部品及びその製造方法 |
US14/901,887 US10107376B2 (en) | 2013-07-02 | 2014-06-03 | Sintered machine part and method of manufacturing the same |
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JP6309215B2 true JP6309215B2 (ja) | 2018-04-11 |
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EP (1) | EP3018228A4 (ja) |
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US20160327144A1 (en) * | 2014-01-22 | 2016-11-10 | Ntn Corporation | Sintered machine part and manufacturing method thereof |
WO2015111338A1 (ja) * | 2014-01-22 | 2015-07-30 | Ntn株式会社 | 焼結機械部品及びその製造方法 |
JP6468851B2 (ja) * | 2015-01-15 | 2019-02-13 | Ntn株式会社 | 電動式直動アクチュエータおよび電動式ブレーキ装置 |
CN106270527A (zh) * | 2016-08-05 | 2017-01-04 | 海安县鹰球粉末冶金有限公司 | 镍合金汽车启动电机行星齿轮及其制造方法 |
WO2019021935A1 (ja) * | 2017-07-26 | 2019-01-31 | 住友電気工業株式会社 | 焼結部材 |
KR20220114262A (ko) * | 2021-02-08 | 2022-08-17 | 현대자동차주식회사 | 피스톤핀 및 이의 제조 방법 |
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TWI412416B (zh) | 2006-02-15 | 2013-10-21 | Jfe Steel Corp | 鐵基質混合粉末暨鐵基質粉末成形體及鐵基質粉末燒結體之製造方法 |
JP4935731B2 (ja) * | 2008-03-18 | 2012-05-23 | Jfeスチール株式会社 | 鉄基粉末混合物 |
JP2009263697A (ja) * | 2008-04-23 | 2009-11-12 | Jfe Steel Corp | 焼結鋼の製造方法 |
JP5552031B2 (ja) * | 2010-11-09 | 2014-07-16 | 株式会社神戸製鋼所 | 粉末冶金用混合粉末 |
JP6010015B2 (ja) * | 2012-12-28 | 2016-10-19 | 株式会社神戸製鋼所 | 浸炭焼入れ材の製造方法 |
US20160327144A1 (en) | 2014-01-22 | 2016-11-10 | Ntn Corporation | Sintered machine part and manufacturing method thereof |
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2013
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2014
- 2014-06-03 CN CN201480035641.9A patent/CN105324504A/zh active Pending
- 2014-06-03 US US14/901,887 patent/US10107376B2/en active Active
- 2014-06-03 EP EP14819452.5A patent/EP3018228A4/en not_active Withdrawn
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US20160369881A1 (en) | 2016-12-22 |
CN105324504A (zh) | 2016-02-10 |
JP2015010272A (ja) | 2015-01-19 |
WO2015001894A1 (ja) | 2015-01-08 |
US10107376B2 (en) | 2018-10-23 |
EP3018228A1 (en) | 2016-05-11 |
EP3018228A4 (en) | 2017-03-01 |
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