Glass Making Machine,Glass Processing Machine,Glass Edge Polishing Machine SHENZHEN HUACAI GLASS MACHINERY CO.,LTD , http://www.hcglassmachinery.com
The chrome-nickel stainless steel coating has a titanium calcium type and a low hydrogen type. Titanium-calcium type can be used for AC and DC, but the AC welding is shallower and easier to redden, so DC power is used as much as possible. 4.0 and below diameters can be used for all-position weldments, 5.0 and above for flat and fillet welds.
The electrode should be kept dry when used. The titanium calcium type should be dried at 150 °C for 1 hour, and the low hydrogen type should be dried at 200-250 °C for 1 hour (do not repeat the drying repeatedly, otherwise the coating is easy to crack and peel off) to prevent the electrode coating Sticking to oil and other dirt, so as not to cause the weld to increase the carbon content and affect the quality of the weldment.
In order to prevent the corrosion between the eyes due to heating, the welding current should not be too large, about 20% less than the carbon steel electrode, the arc should not be too long, the layer is fast cold, and the narrow bead is suitable.
Chrome-nickel stainless steel electrode welding precautions
The chrome-nickel stainless steel electrode has good corrosion resistance and oxidation resistance and is widely used in chemical, fertilizer, petroleum and medical machinery manufacturing. When chrome-nickel stainless steel is welded, repeated heating will precipitate carbides, reducing corrosion resistance and mechanical properties.