JP5723942B2 - 粉末状金属材料の表面処理方法 - Google Patents
粉末状金属材料の表面処理方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 64
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- 238000004381 surface treatment Methods 0.000 title claims description 33
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- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- 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
-
- 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
- B22F1/14—Treatment of metallic powder
-
- 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
- B22F1/14—Treatment of metallic powder
- B22F1/142—Thermal or thermo-mechanical treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
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- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/044—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by jet milling
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- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/045—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by other means than ball or jet milling
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- 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
- B22F2207/00—Aspects of the compositions, gradients
- B22F2207/11—Gradients other than composition gradients, e.g. size gradients
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- 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
- B22F2301/05—Light metals
- B22F2301/052—Aluminium
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- 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
- B22F2301/10—Copper
-
- 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
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- 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
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- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
Description
微細粒領域と粗大粒領域が調和的に配置された調和組織金属の製造材料として使用する粉末状金属材料の表面処理方法において,
作業空間内で噴射粉体を圧縮気体と共に噴射して被衝突物に衝突させると共に,前記作業空間内を吸引して粉塵を除去,回収する集塵手段を備えたブラスト加工装置を使用し,
平均粒径10〜200μmの粉末状金属材料と,前記粉末状金属材料と同等以上の硬度を有する媒体物質を,噴射速度100〜300m/secで繰り返し衝突させるブラスト処理を行うことにより,前記粉末状金属材料より表面酸化物を剥離すると共に,該粉末状金属材料の表面付近に,中心部の結晶粒径に対し小さな結晶粒径を有する微細粒領域を形成することを特徴とする(請求項1)。
前記粉末状金属材料を前記噴射粉体と成すと共に,前記媒体物質を前記被衝突物として行っても良く(請求項4),
前記媒体物質を粉体として前記噴射粉体と成すと共に,前記粉末状金属材料を前記被衝突物として行うものとしても良く(請求項5),
更には,前記媒体物質を前記粉末状金属材料と同一材質,及び同一の平均粒径を有する粉末状金属材料とし,前記噴射粉体と前記被衝突物のいずれ共に,前記粉末状金属材料として行うものとしても良い(請求項6)。
本発明は,既知のブラスト加工装置を使用して,処理対象とする粉末状金属材料と,前記粉末状金属材料と衝突される媒体物質とを,所定の噴射速度で繰り返し衝突させるブラスト処理を行うことで,粉末状金属材料の表面より焼結や溶射に際し強度向上を阻害する酸化スケール等の表面酸化物を除去すると共に,該粉末状金属材料の表面付近に,中心部の結晶粒径に対し小さな結晶粒径を有する微細粒領域を形成しようというものである。
本発明で処理対象とする粉末状金属材料は,焼結等の粉末冶金や溶射の際の材料として使用される平均粒径は10〜200μmの粉体状金属であり,粉末冶金や溶射に適用可能な材質のものであれば各種材質のものを使用することができ,純金属,合金のいずれにより構成されるものであっても良い。
前述した粉末状金属材料と衝突する媒体物質としては,粉末状金属材料と同等以上の硬度を有するものであれば各種のものを使用することができ,金属製のもののみならず,セラミック製のものを使用することもできる。
以上で説明した粉末状金属材料と媒体物質の衝突は,ブラスト加工装置を使用したブラスト加工によって行う。
粉末状金属材料として,ステンレスの粉末(SUS304相当品:♯80)に対し,本発明の表面処理方法を実施した。処理条件を下記の表1に示す。
粉末状金属材料として,粉末高速度工具鋼(SKH相当品:♯150)に対し,本発明の表面処理方法を実施した。処理条件を下記の表2に示す。
粉末状金属材料として,機械構造用合金鋼の粉末(SCM相当品:♯150)に対し,本発明の表面処理方法を実施した。処理条件を下記の表3に示す。
粉末状金属材料として,銅合金の粉末(♯150)に対し,本発明の表面処理方法を実施した。処理条件を下記の表4に示す。
粉末状金属材料として,アルミニウム合金の粉末(AC8A:♯80)に対し,本発明の表面処理方法を実施した。処理条件を下記の表5に示す。
以上,実施例1〜5として説明した本発明の表面処理方法で処理を行った粉末状金属材料を使用して放電プラズマ焼結を行った。
21 キャビネット
22 噴射ノズル
23 回収タンク(サイクロン型)
24 バレルカゴ
32 管
33 排風路
38 集塵機
39 排風器
Claims (7)
- 微細粒領域と粗大粒領域が調和的に配置された調和組織金属の製造材料として使用する粉末状金属材料の表面処理方法において,
作業空間内で噴射粉体を圧縮気体と共に噴射して被衝突物に衝突させると共に,前記作業空間内を吸引して粉塵を除去,回収する集塵手段を備えたブラスト加工装置を使用し,
平均粒径10〜200μmの粉末状金属材料と,前記粉末状金属材料と同等以上の硬度を有する媒体物質を,噴射速度100〜300m/secで繰り返し衝突させるブラスト処理を行うことにより,前記粉末状金属材料より表面酸化物を剥離すると共に,該粉末状金属材料の表面付近に,中心部の結晶粒径に対し小さな結晶粒径を有する微細粒領域を形成することを特徴とする,粉末状金属材料の表面処理方法。 - 前記ブラスト加工装置の前記集塵手段が,前記粉塵と前記噴射粉体とを分級するサイクロンを備えることを特徴とする請求項1記載の粉末状金属材料の表面処理方法。
- 前記ブラスト加工装置の前記集塵手段において,回収した粉塵を不燃性粉末と共に貯留することを特徴とする請求項1又は2記載の粉末状金属材料の表面処理方法。
- 前記粉末状金属材料を前記噴射粉体と成すと共に,前記媒体物質を前記被衝突物として前記ブラスト処理を行うことを特徴とする請求項1〜3いずれか1項記載の粉末状金属材料の表面処理方法。
- 前記媒体物質を粉体として前記噴射粉体と成すと共に,前記粉末状金属材料を前記被衝突物として前記ブラスト処理を行うことを特徴とする請求項1〜3いずれか1項記載の粉末状金属材料の表面処理方法。
- 前記媒体物質を前記粉末状金属材料と同一材質,及び同一の平均粒径を有する粉末状金属材料とし,前記噴射粉体と前記被衝突物のいずれ共に,前記粉末状金属材料としたことを特徴とする請求項1〜3いずれか1項記載の粉末状金属材料の表面処理方法。
- 前記媒体物質の材質が,前記粉末状金属材料と同等以上の硬度を有する金属,又は,前記表面処理後の粉末状金属材料の硬度と同等以上の硬度を有するセラミックスであることを特徴とする請求項1〜5いずれか1項記載の粉末状金属材料の表面処理方法。
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JP2013193254A JP5723942B2 (ja) | 2013-09-18 | 2013-09-18 | 粉末状金属材料の表面処理方法 |
US14/895,321 US20160193658A1 (en) | 2013-09-18 | 2014-09-14 | Surface treatment method for powdered metal material |
CN201480035621.1A CN105339112B (zh) | 2013-09-18 | 2014-09-17 | 粉末状金属材料的表面处理方法 |
PCT/JP2014/074518 WO2015041236A1 (ja) | 2013-09-18 | 2014-09-17 | 粉末状金属材料の表面処理方法 |
EP14845712.0A EP3047925B1 (en) | 2013-09-18 | 2014-09-17 | Surface treatment method for powdered metal material |
HK16107071.9A HK1219075A1 (zh) | 2013-09-18 | 2016-06-20 | 粉末狀金屬材料的表面處理方法 |
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US (1) | US20160193658A1 (ja) |
EP (1) | EP3047925B1 (ja) |
JP (1) | JP5723942B2 (ja) |
CN (1) | CN105339112B (ja) |
HK (1) | HK1219075A1 (ja) |
WO (1) | WO2015041236A1 (ja) |
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US20160236422A1 (en) * | 2015-02-13 | 2016-08-18 | Ricoh Company, Ltd. | Device and method for removing powder and apparatus for fabricating three-dimensional object |
US10913206B2 (en) * | 2015-08-03 | 2021-02-09 | Delavan, Inc | Systems and methods for post additive manufacturing processing |
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JPS63293105A (ja) * | 1987-05-27 | 1988-11-30 | Nkk Corp | 金属粉末の製造方法 |
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JP2754680B2 (ja) * | 1989-03-17 | 1998-05-20 | 大同特殊鋼株式会社 | 金属粉末の処理方法 |
JP3049165B2 (ja) * | 1993-02-15 | 2000-06-05 | 株式会社不二製作所 | 粉末合金の表面層の処理法 |
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JP2978137B2 (ja) * | 1997-09-01 | 1999-11-15 | プラストロン株式会社 | 金属表面処理方法およびその処理を施した金属材 |
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