KR101616237B1 - 플럭스 코어드 와이어, 플럭스 코어드 와이어를 사용한 용접 방법, 플럭스 코어드 와이어를 사용한 용접 조인트의 제조 방법 및 용접 조인트 - Google Patents
플럭스 코어드 와이어, 플럭스 코어드 와이어를 사용한 용접 방법, 플럭스 코어드 와이어를 사용한 용접 조인트의 제조 방법 및 용접 조인트 Download PDFInfo
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- KR101616237B1 KR101616237B1 KR1020157020215A KR20157020215A KR101616237B1 KR 101616237 B1 KR101616237 B1 KR 101616237B1 KR 1020157020215 A KR1020157020215 A KR 1020157020215A KR 20157020215 A KR20157020215 A KR 20157020215A KR 101616237 B1 KR101616237 B1 KR 101616237B1
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- cored wire
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- flux cored
- weld metal
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Abstract
Description
도 2는, TE와 -40℃의 샤르피 흡수 에너지(vE- 40)의 관계를 나타내는 도면이다.
도 3은, CaO 함유량과 확산성 수소량의 관계를 나타내는 도면이다.
도 4는, CaO 함유량과 용접 금속의 산소량의 관계를 나타내는 도면이다.
2 : 받침쇠
3 : 용접 비드
4 : 샤르피 시험편(V 노치 시험편)
5 : A1호 인장 시험편(환봉)(직경=12.5mm)
Claims (11)
- 강제 외피의 내부에 플럭스가 충전된 플럭스 코어드 와이어이며, 상기 플럭스 중에,
CaF2, BaF2, SrF2, MgF2 및 LiF 중 1종 또는 2종 이상의 불화물이 함유되고, 그 함유량의 합계를 α라고 했을 때, 상기 α가 플럭스 코어드 와이어 전체 질량에 대한 질량%로 3.3 내지 6.0%이며, 상기 α에 대한 상기 CaF2의 함유량의 비가 0.89이상이며,
Ti 산화물, Si 산화물, Zr 산화물, Mg 산화물 및 Al 산화물 중 1종 또는 2종 이상의 금속 산화물이 함유되고, 그 함유량의 합계를 β라고 했을 때, 상기 β가 상기 플럭스 코어드 와이어 전체 질량에 대한 질량%로 0.4 내지 1.2%이며,
CaCO3, BaCO3, SrCO3, MgCO3 및 Li2CO3 중 1종 또는 2종 이상의 금속 탄산염이 함유되고, 그 함유량의 합계가, 상기 플럭스 코어드 와이어 전체 질량에 대한 질량%로 0.1 내지 0.5%이며,
상기 플럭스 중의 철분의 함유량이, 상기 플럭스 코어드 와이어 전체 질량에 대한 질량%로 10% 미만이고,
상기 불화물, 상기 금속 산화물 및 상기 금속 탄산염을 제외한 화학 성분이, 상기 플럭스 코어드 와이어 전체 질량에 대한 질량%로:
C: 0.04 내지 0.09%;
Si: 0.3 내지 1.0%;
Mn: 1.0 내지 2.5%;
Al: 0.001 내지 0.050%;
Ni: 1.5 내지 3.5%;
V:0 내지 0.04%;
P: 0.02% 이하;
S: 0.02% 이하;
Cu: 0 내지 0.5%;
Cr: 0 내지 0.5%;
Mo: 0.3 내지 1.0%;
Ti: 0 내지 0.30%;
Nb: 0 내지 0.10%;
B: 0 내지 0.0100%;
Ca: 0 내지 0.50%;
REM: 0 내지 0.0100%;
잔량부: 철 및 불순물로 이루어지고,
이하의 식a로 정의되는 Ceq가 0.60 내지 0.75질량%이며,
이하의 식b로 정의되는 TE가 2.9 내지 4.4질량%인 것을 특징으로 하는 플럭스 코어드 와이어.
Ceq=[C]+[Si]/24+[Mn]/6+[Ni]/40+[Cr]/5+[Mo]/4+[V]/14 …(식a)
TE=[Mn]/2+[Ni]+3×[Cr] …(식b)
단, []가 있는 원소는, 각각의 원소의 질량%에서의 함유량을 나타낸다. - 제1항에 있어서,
상기 플럭스 코어드 와이어 중의 CaO의 함유량이, 상기 플럭스 코어드 와이어 전체 질량에 대한 질량%로 0.15% 이하인 것을 특징으로 하는, 플럭스 코어드 와이어. - 제1항 또는 제2항에 있어서,
상기 α에 대한 상기 CaF2의 함유량의 비가 0.90 이상인 것을 특징으로 하는, 플럭스 코어드 와이어. - 제1항 또는 제2항에 있어서,
상기 β에 대한 상기 α의 비가 3.1 내지 15.0인 것을 특징으로 하는, 플럭스 코어드 와이어. - 제1항 또는 제2항에 있어서,
상기 플럭스 코어드 와이어를 사용한 가스 실드 아크 용접에 대한, 일본 공업 규격 JIS Z3111-2005에 규정된 용착 금속의 인장 시험에 있어서, 상기 용착 금속의 인장 강도가 780 내지 940MPa가 되는 것을 특징으로 하는, 플럭스 코어드 와이어. - 제1항 또는 제2항에 있어서,
상기 강제 외피가 심리스 형상인 것을 특징으로 하는, 플럭스 코어드 와이어. - 제1항 또는 제2항에 있어서,
상기 플럭스 코어드 와이어의 표면에 퍼플루오로폴리에테르 오일이 도포되어 있는 것을 특징으로 하는, 플럭스 코어드 와이어. - 제1항 또는 제2항에 기재된 플럭스 코어드 와이어를 사용하고, 또한,
실드 가스로서, 순 Ar 가스, 순 탄산 가스, 또는 Ar과 3 내지 30vol% CO2의 혼합 가스를 사용하여 강재를 용접하는 것을 특징으로 하는 용접 방법. - 제8항에 기재된 용접 방법에 의해 용접하는 것을 특징으로 하는 용접 조인트의 제조 방법이며,
상기 강재의 판 두께가 3 내지 100mm이며,
상기 강재의 인장 강도가 780MPa 이상인, 용접 조인트의 제조 방법. - 제9항에 기재된 용접 조인트의 제조 방법에 의해 제조되는 것을 특징으로 하는 용접 조인트이며,
판 두께가 3 내지 100mm이며, 인장 강도가 780MPa 이상인 상기 강재와,
용접 금속을 구비하는, 용접 조인트. - 제10항에 있어서,
상기 용접 금속의 확산성 수소량이 1.0ml/100g 미만이고,
상기 용접 금속 중의 산소량이 300 내지 400ppm이며,
상기 용접 금속의 인장 강도가 780 내지 940MPa이며,
상기 용접 금속의 -40℃에서의 샤르피 흡수 에너지가 86J/cm2 이상인 것을 특징으로 하는, 용접 조인트.
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JP5644984B1 (ja) | 2014-12-24 |
KR20150092348A (ko) | 2015-08-12 |
EP2952288B1 (en) | 2018-09-05 |
JPWO2014119082A1 (ja) | 2017-01-26 |
WO2014119082A1 (ja) | 2014-08-07 |
EP2952288A1 (en) | 2015-12-09 |
CN104955610B (zh) | 2016-09-07 |
CN104955610A (zh) | 2015-09-30 |
US9505088B2 (en) | 2016-11-29 |
US20150360327A1 (en) | 2015-12-17 |
EP2952288A4 (en) | 2016-06-29 |
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