JP2013530047A - 改良された鍛造性のための潤滑法 - Google Patents
改良された鍛造性のための潤滑法 Download PDFInfo
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- B21J3/00—Lubricating during forging or pressing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
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- C—CHEMISTRY; METALLURGY
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- C—CHEMISTRY; METALLURGY
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- Oil, Petroleum & Natural Gas (AREA)
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Abstract
Description
Ti-6Al-4V合金(ASTM等級5)の自由金型プレス鍛造について固体グラファイトシートの潤滑性および潤滑剤としての有効性を評価するために、リング圧縮テストを用いた。リング圧縮テストは、例えば、Atlan et al., Metal Forming:Fundamentals and Applications, Ch.6. Friction in Metal Forming, ASM: 1993に全般的に記載されている。なお、これは参照によって本明細書に組み込まれる。システムの剪断係数(m)として定量化される潤滑性は、平坦な環状の試験品を予め定められた高さに減少するまで圧縮するリング圧縮試験を用いて測定した。圧縮リングの内径および外径の変化は、金型/試験品の界面の摩擦に依存している。
Ti-6al-4V合金(ASTM等級5)の円柱状ビレットは、V字状の金型を備えた1000トン自由プレス鍛造機で、固体潤滑剤シート有りおよび無しでプレス鍛造した。ビレットは、華氏1300度まで、炉内で加熱された。プレス鍛造の金型は、トーチで華氏400〜600度に予熱された。ビレットは、マニピュレータにより炉から取り出されて、下側のV字状金型上に配置した。マニピュレータの制約により、ビレットは下側のV字状金型の輪郭に対し中心から外れて配置した。固体潤滑剤シートを用いた鍛造作業のために、等級HGBのグラファイトシート(99重量%のグラファイト、米国カリフォルニア州ウッドランドヒルズのHP Materials Solutions社から入手可能)を、ビレットを金型上に配置する直前に下型の上に配置した。第2の固体潤滑剤シートを、ビレットの上面の上に配置した。このように、固体潤滑剤シートは、ビレットとプレス鍛造機の下型および上型の両方の間に配置した。
Claims (24)
- ワークと鍛造装置の金型との間に固体潤滑剤シートを配置し、ワークを可塑的に変形させるために金型により前記ワークに力を付加することを特徴とする鍛造潤滑方法。
- 鍛造中の金型とワークとの間の剪断係数が0.50未満であることを特徴とする請求項1に記載の方法。
- 鍛造中の金型とワークとの間の剪断係数が0.20未満であることを特徴とする請求項1に記載の方法。
- 鍛造中の金型とワークとの間の剪断係数が0.15未満であることを特徴とする請求項1に記載の方法。
- 鍛造中の金型とワークとの間の剪断係数が0.05〜0.50の範囲であることを特徴とする請求項1に記載の方法。
- 鍛造の間における金型とワークとの間の剪断係数が0.09〜0.20の範囲であることを特徴とする請求項1に記載の方法。
- 前記固体潤滑剤シートが、グラファイト、二硫化モリブデン、二硫化タングステン、および窒化硼素からなる群より選択される固体潤滑剤材料を含む請求項1に記載の方法。
- 固体の潤滑剤シートが固体グラファイトのシートであることを特徴とする請求項1に記載の方法。
- ワークと鍛造装置の金型との間に固体の潤滑剤シートを配置することに、金型の表面上に前記固体潤滑剤シートを配置すること、および前記固体潤滑剤シート上に前記ワークを配置することを含むことを特徴とする請求項1に記載の方法。
- ワークと鍛造装置の金型との間に固体潤滑剤シートを配置することに、下型の表面上に前記固体潤滑剤シートを配置すること、および前記固体潤滑剤シートの上に前記ワークを配置することを含み、前記固体潤滑剤シートが前記ワークの底面と前記鍛造装置の下型との間に配置されることを特徴とする請求項1に記載の方法。
- 前記ワークの上面上に追加の固体潤滑剤シートを配置することをさらに含むことを特徴とする請求項10に記載の方法。
- ワークと鍛造装置の金型との間に固体潤滑剤シートを配置することに、前記ワークを鍛造装置に入れる前に前記固体潤滑剤シートを前記ワーク上に配置することを含むことを特徴とする請求項1に記載の方法。
- ワークと前記鍛造装置の金型との間に前記固体潤滑剤シートを配置する前に、前記金型を加熱することをさらに含むことを特徴とする請求項1に記載の方法。
- 前記ワークを可塑的に変形させるために前記ワークに前記金型により力を付加することは、前記ワークが華氏1000度より高い温度にあるときに生じることを特徴とする請求項1に記載の方法。
- 前記ワークを可塑的に変形させるために前記ワークに前記金型により力を付加することは、前記ワークが華氏1000度〜華氏2000度の範囲にあるときに生じることを特徴とする請求項1に記載の方法。
- 前記ワークを可塑的に変形させるために前記ワークに前記金型により力を付加することは、前記ワークが華氏1000度〜華氏1600度の範囲にあるときに生じることを特徴とする請求項1に記載の方法。
- 前記ワークは、自由鍛造、閉塞鍛造、前方押出、後方押出、ラジアル鍛造、アップセット鍛造、およびドロー鍛造(draw forging)をからなる群より選択される鍛造プロセスで可塑的に変形されることを特徴とする請求項1に記載の方法。
- 前記ワークは、ニアネットシェイプ鍛造プロセスにおいて、可塑的に変形されることを特徴とする請求項1に記載の方法。
- 前記ワークがチタン合金を含むことを特徴とする請求項1に記載の方法。
- 前記ワークがジルコニウム合金を含むことを特徴とする請求項1に記載の方法。
- 前記ワークを可塑的に変形させた後、残余の固体潤滑剤を前記ワークから取り除くことをさらに含むことを特徴とする請求項1に記載の方法。
- 前記固体潤滑剤シートは、前記ワークが前記金型に対してダイロッキングすることを防止することを特徴とする請求項1に記載の方法。
- チタン、チタン合金、ジルコニウム若しくはジルコニウム合金を含むワークと鍛造装置の金型との間に固体グラファイトシートを配置すると共に、前記ワークを可塑的に変形させるために前記金型により前記ワークに力を付加することを含む鍛造潤滑方法であって、鍛造中に前記ワークが華氏1000度〜華氏2000度の範囲の温度にあり、かつ 鍛造中に前記金型と前記ワークとの間の剪断係数が0.50未満であることを特徴とする方法。
- 鍛造中に前記ワークが華氏1000度〜華氏1600度の範囲の温度にあり、かつ鍛造中に前記 金型と前記ワークとの間の剪断係数が0.09〜0.20の範囲にあることを特徴とする請求項19に記載の方法。
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JP2017148817A (ja) * | 2016-02-22 | 2017-08-31 | 株式会社神戸製鋼所 | 熱間鍛造方法及び熱間鍛造品の製造方法 |
JP2018089695A (ja) * | 2016-11-30 | 2018-06-14 | 日立金属株式会社 | 熱間鍛造材の製造方法 |
JP7023090B2 (ja) | 2016-11-30 | 2022-02-21 | 日立金属株式会社 | 熱間鍛造材の製造方法 |
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KR20130101444A (ko) | 2013-09-13 |
US20110302979A1 (en) | 2011-12-15 |
ES2700924T3 (es) | 2019-02-20 |
RU2013101572A (ru) | 2014-07-20 |
MX2012014275A (es) | 2013-02-12 |
US10207312B2 (en) | 2019-02-19 |
PL2580007T3 (pl) | 2019-02-28 |
US9327342B2 (en) | 2016-05-03 |
AU2011265685A1 (en) | 2013-01-31 |
BR112012031709A2 (pt) | 2016-12-06 |
AU2011265685A2 (en) | 2013-01-31 |
MX343998B (es) | 2016-12-02 |
CA2801297C (en) | 2018-06-26 |
EP2580007A1 (en) | 2013-04-17 |
WO2011159413A1 (en) | 2011-12-22 |
IL253903A0 (en) | 2017-10-31 |
TWI559997B (en) | 2016-12-01 |
US20110302978A1 (en) | 2011-12-15 |
CN102939174A (zh) | 2013-02-20 |
JP5913302B2 (ja) | 2016-04-27 |
SG186281A1 (en) | 2013-01-30 |
CN102939174B (zh) | 2016-06-01 |
RU2572639C2 (ru) | 2016-01-20 |
IL223428B (en) | 2018-01-31 |
IL253903B (en) | 2018-03-29 |
KR101814227B1 (ko) | 2018-01-30 |
TW201206588A (en) | 2012-02-16 |
CA2801297A1 (en) | 2011-12-22 |
EP2580007B1 (en) | 2018-09-05 |
AU2011265685B2 (en) | 2016-05-19 |
UA109907C2 (uk) | 2015-10-26 |
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