Cr-Ni stainless steel electrode welding Note
2011-04-30 by seoer
Cr-Ni Stainless Steel Electrode has good corrosion resistance and oxidation resistance, widely used in chemical, fertilizer, petroleum, medical equipment manufacturing. Cr-Ni stainless steel, the precipitation of carbides by the repeated heating and reduce corrosion resistance and mechanical properties.
Chrome-nickel stainless steel with titanium calcium type coating and low-hydrogen type. Titanium calcium type can be used for AC and DC, but the exchange of shallow penetration Welding Wire, and easy to redness, so as far as possible with DC power supply. Diameter of 4.0 and below can be used for all position welding parts, and above 5.0 for a flat butt and fillet weld.
Electrode should be used to keep dry, titanium calcium type should be dried at 150 ℃ for 1 hour, low-hydrogen type should be dried by 200-250 ℃ for 1 hour (can not be repeated drying, easy to crack or flake coating), to prevent the electrode coating viscous oil and other dirt, so as not to cause increase in carbon content, and weld pieces of welding quality.
To prevent corrosion of heat generated between the eyes, Stainless Steel Welding Wires are not too large, less than about 20% of carbon steel electrode, the arc should not be too long, rapid cooling between layers in order to narrow bead suitable.