Solid Wires For High Tensile Steel

Mild steel & High Tensile Steel: Solid Wire

 

1.Profile

In general, solid wire included both MIG (Metal Inert Gas) & MAG(Metal Active Gas) wire. MIG wire usually use Ar, He or Ar/He mix for gas shielding. MAG wire usually use O2 or CO2 as shielding gases. 

Meanwhile, for gas shield Ar/O2 or Ar/CO2 would be specified as following: MIG WIRE: Non O2 or CO2 elements. MAG WIRE: Major shielding gas percentage were inert gas with O2 minor than 2% or CO2 minor than 5%. 

For example: MIG( 98%Ar+2%O2 ); MAG(97%Ar+3%O2)


 For TIG Rod usually use gas shielding by 100%Ar. Due to that, the welding bead appearance seems likely perfect and getting less spatter, stable arc during welding process. But welding speed would be slow, usually use for groove button layer. Sometimes use for high quality requirement condition. 

 

From AWS classification, metal cored had ben specified as solid wire but require mechanical test also. The testing result in accordance with AWS A5.18 standard.

 

④AWS A5.18 standard would be examples as following:


Types

Introduction

ER70S-2

1.A premium, multiple deoxidized (Al:0.05~0.15%). Could be weld on rust or dirt steel surface.  

2.Deoxidized wire containing titanium and zirconium for high tensile stretch quality.  

3.Recommended for root pass welding in pipeline industry.

ER70S-3

1.GMAW application on Car assembling and engineering machine segments.

ER70S-4

1.Deoxidized result better than ER70S-3 wire, containing silicon (0.65~0.85%). 

2.Non-requirement for inspection value.  

3.Application on bicycle assembling segments. 

ER70S-6

1.Recommended for flat welding on sheet working pieces and slightly rusty steel joint. 

2.Shielding Gas could use CO2 or MIX GAS (Ar+CO2). 

3.Typical application on Shipbuilding, Steel construction and car assembling segments.

ER70S-7

1.High speed welding with excellent wetting action and more puddle fluidity. 

2.Shielding Gas could use CO2 or MIX GAS (Ar+CO2).

ER70S-G

1.MIG WIRE manufactured by JIS YGW-11 material. For welding applies with high electric current and thick plates. 

2.Deoxidized wire containing titanium and zirconium for less spatter result. Shielding Gas could use CO2 or MIX GAS (Ar+CO2). 

3.Typical application on Shipbuilding, Steel construction and car assembling segments.

 

 

2.Working instruction


(1)Storage & handing


①MIG wire had been packed by plastic spool /basket wire forms and pail pack. To maintain the integrity of these products, electrodes must be protected from the atmosphere. All flux cored electrodes, regardless of package, should be protected from condensation. TO ensure that condensation does not form on the product, it is recommended that the electrode be stored in an environment that is kept above the dew point temperature for a given relative humidity.

 

②In case of exposed to damp moisture conditions or extremes in temperature, it is recommended to use aluminum foil packing.

 

(2)Caution:


①For welding process management in good condition, please ensure Ar/CO2 MIX GAS as appropriate percentage.

 

②MIX gas shielding had more efficiency on welding speed, less spatter good welding management and good weld metal quality than CO2 gas shielding.

 

③Gas flow recommendation by 20-25l/min. In order to prevent from porosity defect, do not make excess gas flow and use windproof measures.

 

If current less than 250Amp use 15-20mm stick out. Current over than 250Amp, use 20-25mm stick out.

 

For TIG welding process, Argon shielding gas with 99.997% high purity is recommended with 12-18l/min gas flow.

 

Before TIG welding process, acetone is popular solvent for degreasing metal surfaces. It would reduce porosity defect.

 

Tungsten electrodes are used mainly for direct current welding, which contains with Thoriated by 1-2%. The ideal electrode shape for welding thin steel, which helps the tungsten maintain its sharpened edge after grinding.

 

⑧When carbon steel TIG rods applies on filler welding or overlayer welding beads, the hardness degree normally over than HV300. Therefore parts of base metal be aware of preheat, heat input control and PWHT processing for stress relief.

 

View:

STG-56

490N/mm2級高張力鋼TIG銲接
AWS A5.18 ER70S-6
JIS Z3316 YGT50
EN ISO 636-A W 42 3 3Si1
GB T8110 ER50-6

SMG-52

490N/mm2級高張力鋼MIG銲接
AWS A5.18 ER70S-2
JIS Z3312 G 49 A 3 U C 2
EN ISO 14341-A G 42 3 C1/M21 2Ti
GB --

SMG-4

490N/mm2級高張力鋼MIG銲接
AWS A5.18 ER70S-4
JIS Z3312 G 49 A 3 U C 4
EN ISO 14341-A G 42 3 C1/M21 3Si1
GB T8110 ER50-4

STG-52

490N/mm2級高張力鋼TIG銲接
AWS A5.18 ER70S-2
JIS Z3316 YGT50
EN ISO 636-A W 42 3 2Ti
GB T8110 ER50-2

STG-50

490N/mm2級高張力鋼TIG銲接
AWS A5.18 ER70S-G
JIS Z3316 YGT50
EN ISO 636-A W 42 3 Z
GB T8110 ER50-G

SMG-8

490N/mm2級高張力鋼MIG銲接
AWS A5.18 ER70S-G
JIS Z3312 G 49 A 3 U C 6
EN ISO 14341-A G 42 3 C1/M21 Z
GB T8110 ER50-G

SMG-6

490N/mm2級高張力鋼MIG銲接
AWS A5.18 ER70S-6
JIS Z3312 G 49 A 3 U C 6
EN ISO 14341-A G 42 3 C1/M21 3Si1
GB T8110 ER50-6