JP4254817B2 - 高周波誘導加熱応力緩和法 - Google Patents
高周波誘導加熱応力緩和法 Download PDFInfo
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- JP4254817B2 JP4254817B2 JP2006194641A JP2006194641A JP4254817B2 JP 4254817 B2 JP4254817 B2 JP 4254817B2 JP 2006194641 A JP2006194641 A JP 2006194641A JP 2006194641 A JP2006194641 A JP 2006194641A JP 4254817 B2 JP4254817 B2 JP 4254817B2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Description
表1に示すように、本実施形態では、応力緩和の対象部が薄肉であることから、加熱への影響因子として、加熱深さS(mm)を加熱条件として追加した。また、加熱範囲が不十分にならないよう、溶接中心とコイル端の距離D(mm)を新たに設定し直した。
4 溶接継手部
6 高周波誘導コイル
R 中立半径
t 板厚
D 溶接中心と上記高周波誘導コイル端の距離
Claims (4)
- 中立半径Rが33mm以下、かつ板厚tが8.5mm以上17mm以下である管の溶接継手部の管内面を水冷しながら管外面側から高周波誘導コイルにて加熱して、上記溶接継手部の内面の残留応力を緩和するための高周波誘導加熱応力緩和法において、
上記管は、ニオブ含有量が1%以上3%以下のニッケルクロム鉄合金製鋼管と、炭素含有量が0.02%以下のオーステナイト系ステンレス鋼製鋼管とからなり、それら鋼管の間に位置する溶接部は、R−43またはAlloy82から形成され、
上記高周波誘導コイルによる高周波誘導加熱を行うに際して、
上記高周波誘導加熱の加熱深さSをt/6以上t/2以下に設定し、
かつ溶接中心と上記高周波誘導コイル端の距離Dを、数1
かつ最高加熱温度を650℃以下に設定したことを特徴とする高周波誘導加熱応力緩和法。 - 中立半径Rが33mm以下、かつ板厚tが8.5mm以上17mm以下である管の溶接継手部の管内面を水冷しながら管外面側から高周波誘導コイルにて加熱して、上記溶接継手部の内面の残留応力を緩和するための高周波誘導加熱応力緩和法において、
上記管は、ニオブ含有量が1%未満若しくは3%超のニッケルクロム鉄合金製鋼管と、炭素含有量が0.02%以下のオーステナイト系ステンレス鋼製鋼管とからなり、それら鋼管の間に位置する溶接部は、ニッケルクロム鉄合金からなり、
上記高周波誘導コイルによる高周波誘導加熱を行うに際して、
上記高周波誘導加熱の加熱深さSをt/6以上t/2以下に設定し、
かつ溶接中心と上記高周波誘導コイル端の距離Dを、数1
かつ最高加熱温度を600℃以下に設定したことを特徴とする高周波誘導加熱応力緩和法。 - 中立半径Rが33mm以下、かつ板厚tが8.5mm以上17mm以下である管の溶接継手部の管内面を水冷しながら管外面側から高周波誘導コイルにて加熱して、上記溶接継手部の内面の残留応力を緩和するための高周波誘導加熱応力緩和法において、
上記管は、ニオブ含有量が1%未満若しくは3%超のニッケルクロム鉄合金製鋼管と、炭素含有量が0.02%超のオーステナイト系ステンレス鋼製鋼管とからなり、それら鋼管の間に位置する溶接部は、ニッケルクロム鉄合金からなり、
上記高周波誘導コイルによる高周波誘導加熱を行うに際して、
上記高周波誘導加熱の加熱深さSをt/6以上t/2以下に設定し、
かつ溶接中心と上記高周波誘導コイル端の距離Dを、数1
かつ最高加熱温度を550℃以下に設定したことを特徴とする高周波誘導加熱応力緩和法。
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Cited By (1)
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CN104439794A (zh) * | 2014-12-03 | 2015-03-25 | 青岛海越机电科技有限公司 | 圆柱圆周感应加热机构 |
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US10167538B2 (en) * | 2014-02-04 | 2019-01-01 | Nippon Steel & Sumitomo Metal Corporation | Steel pipe |
CN113444970B (zh) * | 2021-06-22 | 2022-08-23 | 上海神洲阳光特种钢管有限公司 | 一种抗拉伸不锈钢毛细管及其制备方法 |
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CN104439794A (zh) * | 2014-12-03 | 2015-03-25 | 青岛海越机电科技有限公司 | 圆柱圆周感应加热机构 |
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