( 1 ) The product is 1.25Cr-0.5MoV Cr-Mo heat resistant steel MIG welding wire.
( 2 ) It’s used to weld pearlitic heat resistant steel under 540oC working temperature,such as boiler pipe,high temperature and high pressure pipe, oil cracking equipment, high temperature synthesis of chemical machinery , etc.
( 1 ) Adequately clear the oil,rust,moisture,dust and other debris of the welded parts.
( 2 ) The hardening capacity of molten metal is strong in air-cool,it need preheat before welding and heat treatment after welding.
( 3 ) Preheat and interpass temperature in 135~165℃,heat treatment after welding in 675~705℃.
One chemical composition of the weld metal sample (wt%)
One mechanical properties of the weld metal sample
（Heat Treatment 690℃x1H）
|Tensild Strength |
|Yield Strength |
The specifications of the product and welding condition (DC+)：
|Dia (mm) |
|Short Circuiting Transfer||Current A||80 ~ 160||100 ~ 210||-||-|
|Voltage V||16 ~ 22||17 ~ 22||-||-|
|Spray Transfer||Current A||180 ~ 280||200 ~ 300||210 ~ 320||220 ~ 330|
|Voltage V||24 ~ 30||24 ~ 30||24 ~ 32||24 ~ 32|