High chromium rust free, wear resistance cored welding wire
A technology of flux-cored welding wire and high chromium, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of poor crack resistance, no hardness of wear-resistant materials, etc., and achieve good corrosion resistance
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Embodiment 1
[0024] Embodiment 1: The outer sheath of the welding wire is an H08A steel strip with a width of 16 mm and a thickness of 0.35 mm. The weight ratio of welding wire powder core formula is: high carbon ferrochrome 38, micro carbon ferrochrome 32, metal chromium powder 17, molybdenum ferro4, vanadium ferro3, tungsten carbide 6, boron iron 8, nickel powder 2, niobium powder 4, rare earth Silicon 2, the welding wire filling amount is 0.51, the outer diameter is φ3.8mm; Submerged arc welding machine is used for surfacing welding, the surfacing welding current is 380A, the flux is 260, the test plate is ordinary low carbon steel, the size is 200×100×20mm, The surfacing single pass is 150mm long, the average hardness of the deposited metal is HRC54, and the surfacing layer has no visible cracks. The test plate is placed in a 900°C high-temperature furnace for 4 hours and then cooled to room temperature with the furnace. There is no common matrix in the surfacing metal The material has...
Embodiment 2
[0025] Embodiment 2: The outer sheath of the welding wire is an H08A steel strip with a width of 16 mm and a thickness of 0.35 mm. The weight ratio of welding wire powder core formula is: high carbon ferrochrome 36, micro carbon ferrochrome 30, metal chromium powder 16, molybdenum ferro2, vanadium ferro4, tungsten carbide 5, boron iron 7, nickel powder 2, niobium powder 5, rare earth Silicon 3, the filling amount of the welding wire is 0.52, and the outer diameter of the welding wire is drawn to φ3.2mm; the submerged arc welding machine is used for surfacing welding, the surfacing welding current is 380A, and the flux is 260. 150mm long, the average hardness of the deposited metal is HRC53, and the surfacing layer has no visible cracks. The test plate is placed in a high-temperature furnace at 800°C for 4 hours. When the test plate is put into the furnace, 5g of sulfur is also put into the furnace. , to create a sulfur corrosion atmosphere, when the temperature and time are re...
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