JP4646292B2 - 二重巻鋼管の製造方法 - Google Patents
二重巻鋼管の製造方法 Download PDFInfo
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- JP4646292B2 JP4646292B2 JP2004366602A JP2004366602A JP4646292B2 JP 4646292 B2 JP4646292 B2 JP 4646292B2 JP 2004366602 A JP2004366602 A JP 2004366602A JP 2004366602 A JP2004366602 A JP 2004366602A JP 4646292 B2 JP4646292 B2 JP 4646292B2
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- Prior art keywords
- copper
- double
- steel pipe
- corrosion
- rolled steel
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Description
2 造管機
3 加熱融合工程
4、6、8、10 還元性ガス
5 一次冷却装置
7 耐食性被膜圧下工程
9 二次冷却装置
21 二重巻鋼管
22 耐食性被膜
23 押圧ロール
24 ピンホール
Claims (2)
- 両面に銅または銅合金の電気めっき層を備えた帯鋼板を幅方向に二重に巻いて圧合し、次いで内外両管の対向面に施された銅または銅合金の電気めっき層を加熱融合して両管の接着層を形成し、その後の冷却段階で不活性ガスまたは還元性ガス雰囲気下、表面の銅または銅合金の電気めっき層を押圧ロールにより径方向に圧下して、銅または銅合金の電気めっき層のピンホールを密着・拡散させて耐食性被膜となし、かつ前記不活性ガスまたは還元性ガス雰囲気下の冷却段階での押圧ロールによる圧下は、表面の銅または銅合金の耐食性被膜の温度が融点の75〜95%に低下した時点で行うことを特徴とする二重巻鋼管の製造方法。
- 前記融点の75〜95%を80〜85%とすることを特徴とする請求項1記載の二重巻鋼管の製造方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2004366602A JP4646292B2 (ja) | 2004-12-17 | 2004-12-17 | 二重巻鋼管の製造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2004366602A JP4646292B2 (ja) | 2004-12-17 | 2004-12-17 | 二重巻鋼管の製造方法 |
Publications (2)
Publication Number | Publication Date |
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JP2006167785A JP2006167785A (ja) | 2006-06-29 |
JP4646292B2 true JP4646292B2 (ja) | 2011-03-09 |
Family
ID=36669078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004366602A Expired - Fee Related JP4646292B2 (ja) | 2004-12-17 | 2004-12-17 | 二重巻鋼管の製造方法 |
Country Status (1)
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JP (1) | JP4646292B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4656490B2 (ja) * | 2004-12-17 | 2011-03-23 | 臼井国際産業株式会社 | 鋼管製造工程における耐食性被膜の被覆方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10277637A (ja) * | 1997-04-08 | 1998-10-20 | Usui Internatl Ind Co Ltd | 多重巻金属管製造装置 |
JP2000005816A (ja) * | 1998-06-22 | 2000-01-11 | Usui Internatl Ind Co Ltd | 多重巻ステンレス鋼管 |
JP2003245713A (ja) * | 2002-02-21 | 2003-09-02 | Usui Kokusai Sangyo Kaisha Ltd | スーパーフェライト系ステンレス鋼製多重巻鋼管及びその製造方法 |
JP2004232049A (ja) * | 2003-01-31 | 2004-08-19 | Nikko Metal Manufacturing Co Ltd | Cuめっきチタン銅 |
-
2004
- 2004-12-17 JP JP2004366602A patent/JP4646292B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10277637A (ja) * | 1997-04-08 | 1998-10-20 | Usui Internatl Ind Co Ltd | 多重巻金属管製造装置 |
JP2000005816A (ja) * | 1998-06-22 | 2000-01-11 | Usui Internatl Ind Co Ltd | 多重巻ステンレス鋼管 |
JP2003245713A (ja) * | 2002-02-21 | 2003-09-02 | Usui Kokusai Sangyo Kaisha Ltd | スーパーフェライト系ステンレス鋼製多重巻鋼管及びその製造方法 |
JP2004232049A (ja) * | 2003-01-31 | 2004-08-19 | Nikko Metal Manufacturing Co Ltd | Cuめっきチタン銅 |
Also Published As
Publication number | Publication date |
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JP2006167785A (ja) | 2006-06-29 |
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