KR100667174B1 - 강관의 제조장치 및 제조방법 - Google Patents
강관의 제조장치 및 제조방법 Download PDFInfo
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- KR100667174B1 KR100667174B1 KR1020050081692A KR20050081692A KR100667174B1 KR 100667174 B1 KR100667174 B1 KR 100667174B1 KR 1020050081692 A KR1020050081692 A KR 1020050081692A KR 20050081692 A KR20050081692 A KR 20050081692A KR 100667174 B1 KR100667174 B1 KR 100667174B1
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- Prior art keywords
- steel pipe
- alloy
- manufacturing
- plating
- plated
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 163
- 239000010959 steel Substances 0.000 title claims abstract description 163
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 38
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 67
- 239000000956 alloy Substances 0.000 claims abstract description 67
- 238000007747 plating Methods 0.000 claims abstract description 44
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 239000011347 resin Substances 0.000 claims abstract description 23
- 238000005260 corrosion Methods 0.000 claims abstract description 19
- 230000007797 corrosion Effects 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 10
- 239000011701 zinc Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 5
- 239000000057 synthetic resin Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 238000004532 chromating Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 229910001297 Zn alloy Inorganic materials 0.000 abstract description 3
- FJMNNXLGOUYVHO-UHFFFAOYSA-N aluminum zinc Chemical compound [Al].[Zn] FJMNNXLGOUYVHO-UHFFFAOYSA-N 0.000 abstract description 3
- 238000002203 pretreatment Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 239000004677 Nylon Substances 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 238000002845 discoloration Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/146—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies to metallic pipes or tubes
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- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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- C23C2/0224—Two or more thermal pretreatments
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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- C23C2/12—Aluminium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
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- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2350/00—Pretreatment of the substrate
- B05D2350/60—Adding a layer before coating
- B05D2350/65—Adding a layer before coating metal layer
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Abstract
Description
Claims (13)
- 조관과정을 통하여 형성된 강관을 예열하는 예열장치;상기 예열된 강관의 온도를 소정온도 이상으로 유지시키고, 환원분위기를 제공하는 전처리장치;알루미늄과 아연의 합금을 용융시키는 가열원으로서 제공되는 히터와, 상기 강관이 통과하는 경로에 상기 용융된 합금이 상기 강관의 표면에 도금되도록 배치된 도금부가 구비되고 내부에 상기 용융된 합금이 저장되는 포트를 포함하는 도금장치; 및상기 도금된 강관의 외면에 합성수지를 도금하는 수지도금장치를 포함하여 이루어지는 강관의 제조장치.
- 제 1 항에 있어서,상기 강관이 통과하는 경로는 실질적으로 수직으로 배치되고, 상기 수직방향의 상단 및 하단에는 각각 상기 강관의 이동을 안내하는 상부 및 하부 가이드롤러가 구비됨을 특징으로 하는 강관의 제조장치.
- 제 2 항에 있어서,상기 도금부의 상측에 배치되어, 상기 강관에 도금되는 합금의 두께를 조절하도록 가스를 분사하는 상부 노즐장치를 더 포함하여 이루어짐을 특징으로 하는 강관의 제조장치.
- 제 1 항에 있어서,상기 용융된 합금의 레벨을 조절하도록 상기 용융된 합금 속으로 선택적으로 삽입되는 레벨 블록을 더 포함하여 이루어짐을 특징으로 하는 강관의 제조장치.
- 제 1 항에 있어서,상기 전처리장치는표면이 보온처리되고, 내부를 따라서 상기 강관이 관통하도록 배치된 적어도 하나 이상의 튜브;상기 튜브에 장착되어 열을 발생시키는 세라믹 히터; 및상기 튜브 내부로 질소 및 수소의 혼합가스를 주입시키는 가스주입장치를 포함하여 이루어짐을 특징으로 하는 강관의 제조장치.
- 제 1 항에 있어서,상기 합금은 55중량%의 알루미늄과 43.4~44.9중량%의 아연을 포함하여 이루어지는 내식성 합금인 것을 특징으로 하는 강관의 제조장치.
- 조관과정을 통하여 형성된 강관을 예열하는 제1단계;상기 예열된 강관의 온도를 소정온도 이상으로 유지시키고, 환원분위기를 제공하는 제2단계;55중량%의 알루미늄과 43.4~44.9중량%의 아연을 포함하여 이루어지는 내식성 합금을 용융시키고, 상기 용융된 합금을 상기 강관의 표면에 도금하는 제3단계;상기 강관을 냉각시키는 제4단계; 및상기 강관의 표면에 수지를 코팅하는 제5단계를 포함하여 수행되는 강관의 제조방법.
- 제 7 항에 있어서,상기 제2단계에서의 환원분위기 조성은 수소 및 질소의 혼합가스를 상기 강관의 주위에 투입함으로써 수행됨을 특징으로 하는 강관의 제조방법.
- 제 7 항에 있어서,상기 제3단계에서 상기 강관은 상기 용융된 합금이 저장된 포트를 수직 상방으로 통과되면서 도금되고, 상기 포트를 통과된 강관의 표면에 도금된 합금의 두께를 조절하기 위하여 상기 강관을 향하여 가스가 분사됨을 특징으로 하는 강관의 제조방법.
- 제 7 항에 있어서,상기 제 4 단계는상기 도금된 강관에 공기를 송풍하는 단계; 및냉각수를 사용하여 상기 강관을 켄칭하는 단계를 포함하여 수행됨을 특징으 로 하는 강관의 제조방법.
- 제 7 항에 있어서,상기 제5단계의 전처리 과정으로서 3가 크로메이팅 공정이 수행됨을 특징으로 하는 강관의 제조방법.
- 제 7 항에 있어서,상기 제5단계에서 무색의 나노 수지가 상기 강관의 표면에 코팅됨을 특징으로 하는 강관의 제조방법.
- 삭제
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KR1020050081692A KR100667174B1 (ko) | 2005-09-02 | 2005-09-02 | 강관의 제조장치 및 제조방법 |
EP06116733.4A EP1760166B1 (en) | 2005-09-02 | 2006-07-06 | Method for manufacturing a steel tube having improved corrosion-resistance |
JP2006186782A JP4423273B2 (ja) | 2005-09-02 | 2006-07-06 | 耐食性に優れた鋼管及びその製造方法 |
CN2006101121761A CN1924075B (zh) | 2005-09-02 | 2006-08-15 | 耐蚀性提高的钢管及其制造方法 |
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Cited By (4)
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KR101094185B1 (ko) | 2011-01-28 | 2011-12-14 | (주)금강 | 피복 금속관의 제조방법 및 그 제조장치 |
KR101188855B1 (ko) | 2010-02-26 | 2012-10-09 | 한국과학기술원 | 보강 금속 파이프의 제조 방법 및 장치 |
KR101545603B1 (ko) | 2014-11-24 | 2015-08-20 | 김장현 | 성형 온도 보정형 온간 드로우 벤딩 장치 |
US10697566B2 (en) | 2012-04-23 | 2020-06-30 | Kumkang Co., Ltd. | Methods for manufacturing metal-resin composite pipe that can be easily wound into ring shape |
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KR100988490B1 (ko) * | 2008-06-26 | 2010-10-20 | 포스코강판 주식회사 | 용융 알루미늄-아연 도금 스테인레스 강판의 제조방법 |
JP5824868B2 (ja) * | 2011-05-24 | 2015-12-02 | 新日鐵住金株式会社 | 亜鉛系めっき鋼材又は亜鉛系めっき鋼製成形品の製造方法 |
KR101886611B1 (ko) | 2012-04-17 | 2018-08-09 | 아르셀러미탈 인베스티가시온 와이 데살롤로 에스엘 | 희생 음극 보호부를 구비하는 코팅이 제공된 스틸 시트, 그러한 시트를 사용한 부품의 제조 방법 및 완성된 부품 |
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KR101711858B1 (ko) * | 2015-12-24 | 2017-03-03 | 주식회사 포스코 | 도금 장치 및 도금 방법 |
CN113005394B (zh) * | 2021-02-22 | 2021-12-07 | 山东农业大学 | 一种基于稀土催渗碳氮硼共渗的j55钢管加工方法 |
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Cited By (5)
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KR101188855B1 (ko) | 2010-02-26 | 2012-10-09 | 한국과학기술원 | 보강 금속 파이프의 제조 방법 및 장치 |
KR101094185B1 (ko) | 2011-01-28 | 2011-12-14 | (주)금강 | 피복 금속관의 제조방법 및 그 제조장치 |
US10697566B2 (en) | 2012-04-23 | 2020-06-30 | Kumkang Co., Ltd. | Methods for manufacturing metal-resin composite pipe that can be easily wound into ring shape |
US10962147B2 (en) | 2012-04-23 | 2021-03-30 | Kumkang Co., Ltd. | Methods for manufacturing metal-resin composite pipe that can be easily wound into ring shape |
KR101545603B1 (ko) | 2014-11-24 | 2015-08-20 | 김장현 | 성형 온도 보정형 온간 드로우 벤딩 장치 |
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EP1760166B1 (en) | 2016-09-14 |
CN1924075B (zh) | 2010-06-02 |
JP2007070725A (ja) | 2007-03-22 |
CN1924075A (zh) | 2007-03-07 |
JP4423273B2 (ja) | 2010-03-03 |
EP1760166A3 (en) | 2008-04-16 |
EP1760166A2 (en) | 2007-03-07 |
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