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good quality welding electrode D708
good quality welding electrode D708

welding electrode model: D708 good quality competitive price timely delivery

D708 high alloy tungsten carbide wear-resisting electrode D708 alloys welding D708 alloy wear-resistant overlaying welding electrode D708 tungsten alloy electrode D708 tungsten carbide wear-resistant overlaying welding electrode D708 tungsten alloy electrode Description: adopt for welding low carbon steel core of hydrogen sodium type medicine skin facing electrode, rely on tungsten carbide alloy in drug skin transition, surfacing metal containing tungsten quantity 80-85%, due to drugs skin thicker, alloy element many, can pick up, use proper ac-dc welding current overlays. Note: 1. Before welding electrodes must be approved by 300-350 °C baking 1h. 2. Surfacing parts as carbon steel when °C preheated temperature in more than 300, surfacing parts as low alloy steel when the preheated temperature for 400 to 500 °C, surfacing welding parts as stainless steel for 600 - when the preheated temperature °C 650. 3. Low alloy steel and stainless steel welding must be approved by 700 °C annealing. USES: used for surfacing of strong wear resistant to rock mechanical parts, such as concrete mixer blade, bulldozers and pump blades, dredging machine blade, high-speed sand mixing box mechanical equipments, etc. Hardfacing layer hardness: HRC p 85 Reference current (DC +) electrode diameter (mm) 4.0 phi phi phi 3.2 5.0 welding current (A) 70 ~ 120 140 ~ 180 180 ~ 220

good quality welding electrode D708

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