Rev. 05 SC-70ML. METAL CORED ARC WELDING CONSUMABLES FOR Mild & 490MPa CLASS HIGH TENSILE STEEL HYUNDAI WELDING CO., LTD.

Transcription

1 Rev. 05 METAL CORED ARC WELDING CONSUMABLES FOR Mild & 490MPa CLASS HIGH TENSILE STEEL HYUNDAI WELDING CO., LTD.

2 v Specification (M E490T15-M21A4-CS1) (AWS A5.18 E70C-6M) EN ISO A T 46 4 M M21 2 H5 v Applications can be used on mild and high tensile steel in single and multi-pass applications. It is ideally suited for high production and automatic applications where large amount of filler metal can be deposited with a minimum amount of slag & spatter.typical industrial applications include shipbuilding, machinery, bridge, structural fabrication and building. v Characteristics on Usage is a metal-cored gas shielded cored wire which combines the high deposition rates of a flux cored wire with the high efficiencies of a solid wire. is recommended for welding of carbon steel having tensile strengths up to 490MPa Provide an exceptionally smooth and stable arc, low spatter and minimal slag coverage in welding v Note on Usage 1. Proper preheating(50~150 ) and interpass temperature must be used in order to release hydrogen which may cause cracking in weld metal when electrodes are used for medium and heavy plates 2. Use Ar % CO2 gas.

3 Mechanical Properties & Chemical Composition of All Weld Metal Method by AWS Spec. Welding Position : 1G(PA) Diameter : 1.2mm (0.045in) Shielding Gas : 80%Ar + 20%CO 2 Flow Rate : 20 l /min Amp./ Volt. : 280A/ 30V Stick-Out : 20~25mm (0.79~0.98in) Pre-Heat : R.T. Interpass Temp. : 150±15 (302±59 ) [ Joint Preparation & Layer Details ] Polarity : DC(+) v Mechanical Properties of all weld metal Consumable Tensile Test CVN Impact Test J(ft lbs) YS Mpa(ksi) TS Mpa(ksi) EL (%) -40 (-40 ) -50 (-58 ) 476(69) 553(80) (55) 47(35) 400 (58) 490~660 (70~95) 22 27J at 40 ( 20ft lbs at 40 ) v Chemical Analysis of all weld metal(wt%) Consumable C Si Mn P S Ni

4 Mechanical Properties & Chemical Composition of All Weld Metal Method by AWS Spec. Welding Position : 1G(PA) Diameter : 1.6mm (1/16in) Shielding Gas : 80%Ar + 20%CO 2 Flow Rate : 20 l /min Amp./ Volt. : 300A/ 30V Stick-Out : 20~25mm (0.79~0.98in) Pre-Heat : R.T. Interpass Temp. : 150±15 (302±59 ) [ Joint Preparation & Layer Details ] Polarity : DC(+) v Mechanical Properties of all weld metal Consumable Tensile Test CVN Impact Test J(ft lbs) YS Mpa(ksi) TS Mpa(ksi) EL (%) -40 (-40 ) -50 (-58 ) 488(71) 560(81) (52) 41(30) 400 (58) 490~660 (70~95) 22 27J at 40 ( 20ft lbs at 40 ) v Chemical Analysis of all weld metal(wt%) Consumable C Si Mn P S Ni

5 Impact Toughness Test on Various Temp. Method by AWS Rules Diameter : 1.2mm (0.045in) Shielding Gas : 80%Ar + 20%CO2 Flow Rate : 20 l /min Amp./ Volt. : 280 / 30 Stick-Out : 20~25 Pre-Heat : Room Temp. Interpass Temp. : 150±15 (302±59 ) [ Joint Preparation & Layer Details ] Polarity : DC(+) Joules Charpy V-Notch Impact Value (J) Temp.

6 Diffusible Hydrogen Content Diameter : 1.2mm (0.045in) Shielding Gas : 80%Ar +20%CO2 Flow Rate : 20 l /min Welding Position : 1G (PA) Amps / Volts : 280A / 30V Stick-Out : 20~25mm (0.79~0.98in) Welding Speed : 30 cm/min (12 in/min) Current Type & Polarity : DC(+) v Hydrogen Analysis Using Gas Chromatography Method Hydrogen Evolution Time : 72 hrs Evolution Temp. : 45 (113 ) Barometric Pressure : 780 mm-hg v Result( ml /100g Weld Metal) X1 X2 X3 X Average Hydrogen Content 3.7 ml / 100g Weld Metal

7 Welding Efficiency v Deposition Rate & Efficiency Wire Size Welding Conditions Amp.(A) Volt.(V) Wire Feed Speed m/min (in/min) Deposition Efficiency(%) Deposition Rate kg/hr(lb/hr) (320) 92~94 3.4(7.5) 1.2mm (0.045in) (430) 94~96 5.0(11.0) (620) 95~97 7.1(15.6) Remark Deposition efficiency =(Deposited metal weight/ Wire weight used) 100 Deposition rate =(Deposited metal weight/ Welding time,min.) 60 * Shielding Gas : 80%Ar+20%CO2

8 Proper Welding Condition Wire Dia. Consumable Shielding Gas Welding Position 1.2mm (0.045in) F & HF 200~300Amp 80%Ar +20%CO 2 V-Up & OH 120~220Amp V-Down 200~300Amp

9 Approvals v Shipping Approvals Welding Position Register of shipping & Size mm(in) KR ABS LR BV DNV GL NK F,HF V-up - 4Y400SA H5 (0.045~1/1 6) 4Y40SH5 (0.045~1/1 6) SA4Y40M HHH (0.045~1/16) ⅣY40MSH5 (0.045~1/1 6) 4Y40H5S (0.045~1/1 6) - v F No & A No F No A No 6 1