KR20150053718A - 가스 실드 아크 용접용 플럭스 내장 와이어 및 극저온용 강의 용접 방법 및 용접 조인트의 제조 방법 - Google Patents
가스 실드 아크 용접용 플럭스 내장 와이어 및 극저온용 강의 용접 방법 및 용접 조인트의 제조 방법 Download PDFInfo
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- KR20150053718A KR20150053718A KR1020140153848A KR20140153848A KR20150053718A KR 20150053718 A KR20150053718 A KR 20150053718A KR 1020140153848 A KR1020140153848 A KR 1020140153848A KR 20140153848 A KR20140153848 A KR 20140153848A KR 20150053718 A KR20150053718 A KR 20150053718A
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
이 플럭스 내장 와이어는, CaF2, BaF2, SrF2, MgF2 및 LiF 중 1종 또는 2종 이상이 함유되고, 그 함유량의 합계를 α로 하였을 때, 상기 α가 상기 플럭스 내장 와이어의 전체 질량에 대한 질량%로 2.0∼7.0%이고, Ti 산화물, Si 산화물, Mg 산화물, Al 산화물, Zr 산화물 및 Ca 산화물 중 1종 또는 2종 이상이 함유되고, 그 함유량의 합계를 β로 하였을 때, 상기 β가 상기 플럭스 내장 와이어의 전체 질량에 대한 질량%로 0.2∼0.9%이고, 상기 α에 대한 상기 CaF2의 함유량의 비가 0.90 이상이고, 상기 β에 대한 상기 α의 비가 3.0 이상 15.0 이하이다.
Description
도 2는 SM과 -196℃의 샤르피 흡수 에너지의 관계를 나타내는 도면(강제 외피는 모두 Ni 함유 강).
도 3은 CaO 함유량과 확산성 수소량의 관계를 나타내는 도면(강제 외피는 모두 연강).
도 4는 CaO 함유량과 확산성 수소량의 관계를 나타내는 도면(강제 외피는 모두 Ni 함유 강).
도 5는 와이어의 절단 단면을 도시하는 도면.
도 6은 용접 금속 중의 산소량과 -196℃의 샤르피 흡수 에너지의 관계를 나타내는 도면(강제 외피는 모두 연강).
도 7은 용접 금속 중의 산소량과 -196℃의 샤르피 흡수 에너지의 관계를 나타내는 도면(강제 외피는 모두 Ni 함유 강).
도 8은 실시예에 있어서의 시험편의 채취 위치를 도시하는 도면(JIS Z3111-2005).
2 : 백킹 스트립
3 : 용접 비드
4 : 샤르피 충격 시험편(2㎜ V 노치)
5 : A0호 인장 시험편(환봉)
Claims (10)
- 강제 외피의 내부에 플럭스가 충전된 플럭스 내장 와이어이며, 상기 플럭스 내장 와이어 중에,
금속 불화물인 CaF2, BaF2, SrF2, MgF2 및 LiF 중 1종 또는 2종 이상이 함유되고, 그 함유량의 합계를 α로 하였을 때, 상기 α가 상기 플럭스 내장 와이어의 전체 질량에 대한 질량%로 2.0∼7.0%이고,
금속 산화물인 Ti 산화물, Si 산화물, Mg 산화물, Al 산화물, Zr 산화물 및 Ca 산화물 중 1종 또는 2종 이상이 함유되고, 그 함유량의 합계를 β로 하였을 때, 상기 β가 상기 플럭스 내장 와이어의 전체 질량에 대한 질량%로 0.2∼0.9%이고,
금속 탄산염인 CaCO3, BaCO3, SrCO3, MgCO3 및 Li2CO3 중 1종 또는 2종 이상이 함유되고, 그 함유량의 합계가, 상기 플럭스 내장 와이어의 전체 질량에 대한 질량%로 0.6% 미만이고,
상기 α에 대한 상기 CaF2의 함유량의 비가 0.90 이상이고,
상기 β에 대한 상기 α의 비가 3.0 이상 15.0 이하이고,
상기 Ti 산화물의 함유량이, 상기 플럭스 내장 와이어의 전체 질량에 대한 질량%로 0∼0.4%이고,
상기 Si 산화물의 함유량이, 상기 플럭스 내장 와이어의 전체 질량에 대한 질량%로 0.2∼0.5%이고,
상기 Ca 산화물의 함유량이, 상기 플럭스 내장 와이어의 전체 질량에 대한 질량%로 0.20% 미만이고,
상기 플럭스 중의 아크 안정제의 함유량이, 상기 플럭스 내장 와이어의 전체 질량에 대한 질량%로 0∼0.50%이고,
상기 플럭스 중의 철분의 함유량이, 상기 플럭스 내장 와이어의 전체 질량에 대한 질량%로 5% 미만이고,
상기 금속 불화물, 상기 금속 산화물 및 상기 금속 탄산염을 제외한 화학 성분이, 상기 플럭스 내장 와이어의 전체 질량에 대한 질량%로:
C:0.003∼0.040%;
Si:0.05∼0.40%;
Mn:0.2∼0.8%;
Al:0.003∼0.050%;
Ni:6.0∼16.0%;
P:0.02% 이하;
S:0.01% 이하;
Cu:0∼0.5%;
Cr:0∼0.5%;
Mo:0∼0.5%;
V:0∼0.2%;
Ti:0∼0.1%;
Nb:0∼0.1%;
B:0∼0.01%;
Mg:0∼0.6%;
REM:0∼0.0500%;
잔량부:Fe 및 불순물;
로 이루어지고,
하기의 식 a로 정의되는 SM이 0.3∼1.0%이고,
하기의 식 b로 정의되는 Ceq가 0.250∼0.525%인
것을 특징으로 하는, 가스 실드 아크 용접용 플럭스 내장 와이어.
단, 식 a 및 식 b의 [ ]가 부여된 원소는, 각각의 원소의 함유량(질량%)을 나타냄. - 제1항에 있어서,
Ni를 함유하는 상기 강제 외피의 내부에 상기 플럭스가 충전된 상기 플럭스 내장 와이어이며, 상기 강제 외피의 상기 Ni의 함유량이, 상기 강제 외피의 전체 질량에 대한 질량%로 6∼18%인 것을 특징으로 하는, 가스 실드 아크 용접용 플럭스 내장 와이어. - 제1항 또는 제2항에 있어서,
상기 플럭스 내장 와이어 중의 상기 REM의 함유량이, 상기 플럭스 내장 와이어의 전체 질량에 대한 질량%로 0.0100% 이하인 것을 특징으로 하는, 가스 실드 아크 용접용 플럭스 내장 와이어. - 제1항 내지 제3항 중 어느 한 항에 있어서,
상기 플럭스 내장 와이어 중의 상기 Ca 산화물의 함유량이, 상기 플럭스 내장 와이어의 전체 질량에 대한 질량%로 0.10% 미만인 것을 특징으로 하는, 가스 실드 아크 용접용 플럭스 내장 와이어. - 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 플럭스 내장 와이어를 사용한 가스 실드 아크 용접에 있어서의, 일본 공업 규격 JIS Z3111-2005에 규정된 용접 금속의 인장 시험에 있어서, 상기 용접 금속의 인장 강도가 660∼900㎫인 것을 특징으로 하는, 가스 실드 아크 용접용 플럭스 내장 와이어. - 제1항 내지 제5항 중 어느 한 항에 있어서,
상기 플럭스 내장 와이어는, 상기 강제 외피에 슬릿 형상의 간극이 없는 것을 특징으로 하는, 가스 실드 아크 용접용 플럭스 내장 와이어. - 제1항 내지 제5항 중 어느 한 항에 있어서,
상기 플럭스 내장 와이어는, 상기 강제 외피에 슬릿 형상의 간극이 있는 것을 특징으로 하는, 가스 실드 아크 용접용 플럭스 내장 와이어. - 제1항 내지 제7항 중 어느 한 항에 있어서,
상기 플럭스 내장 와이어는, 상기 강제 외피의 표면에 퍼플루오로폴리에테르유가 도포되어 있는 것을 특징으로 하는, 가스 실드 아크 용접용 플럭스 내장 와이어. - 제1항 내지 제8항 중 어느 한 항에 기재된 가스 실드 아크 용접용 플럭스 내장 와이어를 사용하여, 실드 가스로서, 순Ar 가스, Ar과 1.5체적% 이하의 O2 또는 CO2와의 혼합 가스, 순He 가스, He와 1.5체적% 이하의 O2 또는 CO2와의 혼합 가스 중 어느 1종을 사용하여 용접하는 것을 특징으로 하는, 극저온용 강의 용접 방법.
- 판 두께가 6∼100㎜이고,
Ni의 함유량이 5.5∼9.5질량%이고,
인장 강도가 660∼900㎫인 강판에 대해,
제1항 내지 제8항 중 어느 한 항에 기재된 가스 실드 아크 용접용 플럭스 내장 와이어를 사용하고,
실드 가스로서, 순Ar 가스, Ar과 1.5체적% 이하의 O2 또는 CO2와의 혼합 가스, 순He 가스, He와 1.5체적% 이하의 O2 또는 CO2와의 혼합 가스 중 어느 1종을 사용하여 용접하는 것을 특징으로 하는, 용접 조인트의 제조 방법.
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US9770789B2 (en) | 2017-09-26 |
EP2871021B1 (en) | 2018-08-22 |
KR101674743B1 (ko) | 2016-11-09 |
US20160129532A1 (en) | 2016-05-12 |
EP2871021A1 (en) | 2015-05-13 |
CN104625486A (zh) | 2015-05-20 |
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