HWC_NWBW_Evaluation3
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Your Best Welding Partner!
Hyundai Welding Co., Ltd.MENA Office
P.O. Box 61476Jebel Ali Freezone
Dubai, UAE
Hyundai Welding Research & Development CenterBaked Flux Cored Wire (SF-71) Evaluation
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EvaluationIntroduction
MENA Office • R&D
SF-71 Flux Cored Wire
Non-Baked (NW) Baked (BW)
ADVANTAGES• Good Mechanical Performance
• Good Arc Start •Good Short Circuit Arc
• Good Fume Generation• Good Arc Resistance And Spatter Resistance
ADVANTAGES• Good High-Current Wire Transmission Characteristics
• Good Wire Rust Resistance• Good In Defects Resistance
• Good Tip Wear
•General Differences
•Process of Manufacturing
FORMINGWIRE
DRAWING WINDING
Baked (BW)
Non-Baked (NW)
Surface Appearance
FORMINGWIRE
DRAWING BAKING WINDING
This shows it is for SF-71 FC wire, are the things be same for SC-70H cored?
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GeneralSpecification
MENA Office • R&D
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GeneralSpecification
MENA Office • R&D
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WeldabilityComparison
MENA Office • R&D
•Bead Apperance of T-Fillet Horizontal Fillet Welding (1 Pass)Baked (BW)
Non-Baked (NW)
Welding parameter:Gas Flow: Stick Out:Polarity:
280A/31V20L/min.20mmDC+
• Similar Workability• Both Types Display Good Arc Resistance• Both Types Display Slag Fluidity
Welding Conditions Conclusions
•Bead Apperance of Vertical Up Fillet Welding
190A/23V 230A/26V 270A/30V
Conclusions
• Similar Workability• Both Types Display Good Arc Resistance
• Both Types Display Slag Fluidity• The Heat Treated Type Showed Better Spreadability
of the Weld Metal
NW BW NW BW NW BW
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MechanicalPerformance
MENA Office • R&D
Material:Specimen Geometry:Welding Condition:Welding Heat Input:Stack Method:
• Test Conditions20t / 300mm, DH3620˚ / Root Gap: 16mm230A / 30V10-20 (KJ/cm)6 Levels / 12 Passes
• Results Table
Class0˚C -20˚ C
YS (MPa) TS (MPa) EL (%) X1, X2, X3 Avg. X1, X2, X3 Avg.Non-Baked (NW) 557 617 28.5 94, 96, 101 97 56, 49, 51 52
Baked (BW) 530 580 27.5 65, 38, 78 75 37, 43, 33 38ABS 2Y ≥375 490-660 ≥22 ≥47J at 0˚C
Charpy V-Notch Impact Test (Avg. Joules)Tensile Test
20˚
20T
16mm
1 23 4
5 6
7 8
9 10
11 12
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ChemicalComposition
MENA Office • R&D
• Chemical Composition of Deposit of All Weld Metal
• Diffusible Hydrogen Content of 100g Weld Metal
• Testing Method
Test Method: JIS Z3118 (Gas Chromography Method)Gas Flow: 100% CO2, 20l/min
Stick Out: 20mmParameters: 280A / 31V
Welding Speed: 25cm / minTemperature (˚C), Rh (%): 15˚ C, 50%
Holding Time: 72 HoursHydrogen Conten: ml / 100g
Diff
usib
le H
ydro
ge
n C
on
ten
t o
f 100
g W
eld
Me
tal (
ml/
100g
)C Si Mn P S
Non-Baked (NW) 0.050 0.57 1.27 0.013 0.006Baked (BW) 0.060 0.58 1.28 0.012 0.006
Chemical Composition (wt%)
Baked (BW) Flux Cored Wire Non-Baked (NW) Flux Cored Wire
0
1
2
3
4
5
6
55.5
Sales
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FumeEmission
MENA Office • R&D
• Testing Method
Test Method: JIS Z3118 (Gas Chromography Method)Gas Flow: 100% CO2, 20l/min
Stick Out: 20mmParameters: 280A / 31V
Welding Speed: 25cm / minTemperature (˚C), Rh (%): 15˚ C, 50%
Holding Time: 72 HoursHydrogen Conten: ml / 100g
• Fume Emission
Fum
e E
miss
ion
(m
g/m
in)
• Test Method
FumeColletion
Fume FilterUnit
Auto WeldingCarriage
BakedNon-Baked
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RootCracking
MENA Office • R&D
40˚
25T
8mm
500mm
300mm
A
A'
Research & Development Center
Testing Conditions
Welding Parameters
240A/28VRoot Gap
8mmGroove Angle
40˚Steel
DH36 (25T)
Result: Baked Flux Cored Wire (BW)
Result: Non-Baked Flux Cored Wire (NW)
Research & Development Center
200A 250A 300A
0123456789101112131415
NWBW
Prim
ary
La
yer C
rac
k Pe
rce
nta
ge
Primary Layer Crack Test
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FeedabilityEvaluation
MENA Office • R&D
• Welding Condition
Welding condition: 330A/33VGas: 100% CO2Type: 6mm Cable Feeding Test
3W (3 Wave)
2W.1T (2 Wave / 1
Turn)
Constant Welding (20min)
Non-Baked (NW) A B+ B+Baked (BW) A A A
Feedability
Classification Wire TS (MPa)
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RustEvaluation
MENA Office • R&D
Time Elapsed
0 HoursTemperature (Constant)
50˚ CelsiusHumidity (Constant)
80%Research & Development Center
Baked Flux Cored Wire (BW)
Time Elapsed
96 HoursTemperature (Constant)
50˚ CelsiusHumidity (Constant)
80%Research & Development Center
Baked Flux Cored Wire (BW)
Time Elapsed
0 HoursTemperature (Constant)
50˚ CelsiusHumidity (Constant)
80%Research & Development Center
Non-Baked Flux Cored Wire (NW)
Time Elapsed
96 HoursTemperature (Constant)
50˚ CelsiusHumidity (Constant)
80%Research & Development Center
Non-Baked Flux Cored Wire (NW)
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AboutUs
MENA Office • R&D
Hyundai Welding is a world class manufacturer of welding consummables currently ranked in the top five internationally. Our manufacturing is done according to international standards including but not limite to EN, AWD and ASME. We currently manufacture in three countrie with more facilities in the planning stages around the world.
We have three research and development facilities to support our manufacturing and clients throughout the world.
Our product line is a diverse line with products tailor made for various industries. Please view our product catalog for detailed product information.
Started Production of Submerged Welding Wire
Started Production of Submerged Welding Flux
Company Renamed ‘Hyundai Welding Co., Ltd.
Started Manufacturing Welding & Cutting Equipment
Established Overseas Manufacturing Plant in Kunhan, China
Establised 2nd Overseas Manufacturing Facilities in Vietnam
Started 2nd Domestic Manufacturing Facility in Gochang, Korea
Established R&D Center in Sungnam, Korea
Established Branch Office in the United Arab Emirates
1975
1977
1978
1980
1987
1997
2002
2007
2009
2012
2013
Company Founded as ‘Seo Han Development Co., Ltd.’
Started Production of Electrodes & Solide Wire
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Our MENA office was established in 2013, our office is located in the free trade zone of Jebel Ali in the Emirate of Dubai (“Jafza”). We believe this to be of strategic importance in order to have a local presense in the region to better serve our client’s needs and accumulate local know how. Our plans do not end with just an office but have plans to set up a logistics point in this area to easily distribute and provide after market services to the region without any major delays. Our office covers the following countries;.
MENAOffice
Morocco
Algeria Tunisia
Libya
Egypt
Sudan
Syria
LebanonIran
Oman
Yemen
Saudi Arabia
UAEQatar
Bahrain
Iraq
Kuwait
MENA Office • R&D
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ManufacturingResearch
Phase 1: Middle East & North Africa
Phase 2: Africa
Phase 3: Central Asia
China Manufacturing CenterKunshan, ChinaCapacity: 5,300 metric tons/month
Ichon Manufacturing CenterIchon, KoreaWelding Machinery & Equipment
Pohang Manufacturing Center(1 & 2)Pohang, KoreaCapacity: 9,245 metric tons/month
Gochang Manufacturing CenterGochang, KoreaCapacity: 3,135 metric tons/month
Vietnam Manufacturing CenterVietnamCapacity: 3,186 metric tons/month
Pohang R&D CenterPohang, KoreaCentral Research
China R&D CenterKunshan, ChinaOverseas Research
Sungnam R&D CenterSungnam, KoreaHigh End Product Research
MENA Office • R&D
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ContactUs
MENA OfficeP.O. Box 61476
Jebel Ali Freezone, Dubai, UAETelephone: +971 4 880 8354Facsimile: +971 4 880 8352
[email protected]@hyundaiwelding.com
MENA Office • Heat Treated Flux Cored Wire Evaluation