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Golden Bridge

Golden Bridge (JQ-YR551B2V-1 JQ-YR81B2V) Flux-Cored Welding Wire

Golden Bridge (JQ-YR551B2V-1 JQ-YR81B2V) Flux-Cored Welding Wire

SKU:JQ-YR551B2V-1 JQ-YR81B2V-045-0011

Diameter
Package
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JQ-YR551B2V-1 JQ-YR81B2V




JQ-YR551B2V-1 and JQ-YR81B2V are titanium oxide CO2 gas shielded heat-resistant steel flux-cored welding wires, which have excellent welding performance with smooth arc, low spatter level, effortless slag removal ability and excellent all-position welding performance.



The product is applicable for welding 1%Cr~0.5%Mo-V low alloy heat-resistant steel with working temperature below 540℃. It is mainly used in the fields such as boiler pipes under high temperature and high pressure in power stations, high temperature synthetic chemical machinery, petroleum refining equipment and so on.

Chemical components of deposited metal (%) (shielding gas: CO2)

Item
C
Mn
Si
S
P
Cr
Mo
V
Example value 0.050 0.79 0.22 0.006 0.010 1.15 0.51 0.12
 

Mechanical properties of deposited metal (shielding gas: CO2)

Item
Rm
(MPa)
ReL/Rp0.2
(MPa)
A
(%)
KV2 (J)
20℃
Heat treatment
Example value 631 553 22 50 730℃×2h
Diffusion hydrogen content of deposited metal (thermal conductivity method): ≤10ml/100g
X-ray flaw detection requirements: Level II

Reference current (DC+)

Diameter of welding wire (mm)
φ1.2
Current range(A) Flat welding 120-300
Upward vertical welding, overhead position welding 120-260
Vertical down welding 200-300
Horizontal position welding 120-280
 




1. The work piece shall be degreased and derusted before welding.
2. CO2 gas shielded, gas concentration above 99.98%.
3. When welding, the gas flow rate is generally 20-25L/min.
4. When welding with flux-cored welding wire, the dry extension length should be 15-25mm.
5. The work piece should be preheated at 150 - 300℃ before welding, and heat treated at 730±15℃ after welding.


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Diameter

* 0.045 inches (1.20 mm)

Package

11 lb (5 kg), 33 lb (15 kg), 550 lb (250 kg)