JP7096382B2 - 高炭素軸受鋼及びその製造方法 - Google Patents
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
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- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
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- F16C33/58—Raceways; Race rings
- F16C33/64—Special methods of manufacture
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- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
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- F16C2204/00—Metallic materials; Alloys
- F16C2204/60—Ferrous alloys, e.g. steel alloys
- F16C2204/66—High carbon steel, i.e. carbon content above 0.8 wt%, e.g. through-hardenable steel
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Description
高炭素軸受鋼を製造するための原材料を製錬して、化学組成が上記手段に記載の高炭素軸受鋼の化学組成に対応する鋼インゴットを得るステップと、
前記鋼インゴットを均質化した後、棒材に加工するステップと、
前記棒材に対して順次球状化焼きなまし、焼入れ、焼戻しを行い、高炭素軸受鋼を得るステップと、を含む、
上記の手段に記載の高炭素軸受鋼の製造方法を提供する。
高炭素軸受鋼を製造するための原材料を製錬して、化学組成が上記手段に記載の高炭素軸受鋼の化学組成に対応する鋼インゴットを得るステップと、
前記鋼インゴットを均質化した後、棒材に加工されるステップと、
前記棒材に対して順次球状化焼きなまし、焼入れ、焼戻しを行い、高炭素軸受鋼を得るステップと、を含む、
上記の手段に記載の高炭素軸受鋼の製造方法を提供する。
本発明の鋼は、実験用真空誘導炉で製錬され、キャストインゴットタイプは50kgの丸型インゴットであり、棒状サンプルを鍛造するために合計10個炉の鋼が製錬され、その化学組成を表1に示す。MA1-MA10鋼は、本発明のマイクロアロイ軸受鋼で、C1-C3は比較としての軸受鋼であった(ここで、丸型インゴットの製造方法は、C1は実験用真空誘導炉で製錬されたGCr15であり、C2は炉外で精製されたGCr15であり、C3は二重真空GCr15)。
Claims (8)
- 高炭素軸受鋼であって、その化学組成は、C:0.80~1.20wt%、Cr:0.40~2.0wt%、Mn:0.15~0.75wt%、Si:0.15~0.75wt%、Nb:0~0.20wt%、Mo:0~0.20wt%、V:0~0.20wt%、P≦0.015wt%、S≦0.01wt%、残りはFeと避けられない不純物であり、前記Nb、Mo、Vの含有量が同時にゼロではないこと
を特徴とする高炭素軸受鋼の製造方法であって、
高炭素軸受鋼を製造するための原材料を製錬して、高炭素軸受鋼の前記化学組成に対応する鋼インゴットを得るステップと、
前記鋼インゴットを均質化した後、棒材に加工されるステップと、
前記棒材に対して順次球状化焼きなまし、焼入れ、焼戻しを行い、高炭素軸受鋼を得るステップと、
を含み、
前記球状化焼きなましプロセスには、前記棒材を800~860℃で0.5~12時間保温した後、680~740℃まで冷却して0.5~12時間保温し、最後に室温まで空冷することが含まれることを特徴とする、
高炭素軸受鋼の製造方法。 - 前記高炭素軸受鋼には、Nb、Mo、Vの少なくとも2種が含まれていることを特徴とする請求項1に記載の高炭素軸受鋼の製造方法。
- 前記Nb、Mo、Vの合計量は0.10~0.30wt%であることを特徴とする請求項1又は2に記載の高炭素軸受鋼の製造方法。
- 前記製錬の方法は、エレクトロスラグ製錬、二重真空製錬、炉外精製または真空誘導炉製錬であることを特徴とする請求項1から3のいずれか一項に記載の製造方法。
- 前記均質化処理の温度は1100~1250℃、保温時間は2~6時間であることを特徴とする請求項1から4のいずれか一項に記載の製造方法。
- 前記焼入れの温度は、820~860℃、保温時間は、0.10~1.0時間であり、前記焼入れの冷却方法は油焼入れであることを特徴とする請求項1から5のいずれか一項に記載の製造方法。
- 前記焼戻しの温度は130~200℃、保温時間は0.5~3.5時間、前記焼戻しの冷却方法は空冷であることを特徴とする請求項1から6のいずれか一項に記載の製造方法。
- 前記棒材の加工方法は熱間鍛造または熱間圧延であり、前記熱間鍛造または熱間圧延の温度は1150~1200℃であることを特徴とする請求項1から7のいずれか一項に記載の製造方法。
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CN114134403B (zh) * | 2021-05-19 | 2023-01-13 | 江阴兴澄特种钢铁有限公司 | 一种大规格风电轴承滚动体用钢及其生产方法 |
CN113755766A (zh) * | 2021-08-16 | 2021-12-07 | 钢铁研究总院 | 一种大规格长寿命高碳轴承钢棒材及其制备方法 |
CN113862561A (zh) * | 2021-09-08 | 2021-12-31 | 钢铁研究总院 | 一种长寿命高碳轴承钢管材及其制备方法和应用 |
CN114231825B (zh) * | 2021-12-22 | 2022-07-22 | 中国科学院金属研究所 | 一种高碳高合金钢产品及其制备方法 |
CN114086076B (zh) * | 2022-01-10 | 2022-04-15 | 北京科技大学 | 一种高碳铬轴承钢及其制备方法 |
CN114871293B (zh) * | 2022-04-24 | 2023-04-07 | 中国科学院金属研究所 | 一种m50轴承钢棒材及其制备方法 |
CN115992303A (zh) * | 2022-11-09 | 2023-04-21 | 山东钢铁股份有限公司 | 一种轴承钢水浸超声检测用试样的热处理工艺 |
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