The sealing valve on the top of the blast furnace is the key equipment for normal charging of the blast furnace.Different from the driving shaft of the upper sealing valve and the base material of the drive arm,the weld performance is poor after welding,and the stress is concentrated,and the weld cracking at the root of the drive arm often occurs.From the equipment principle,structural characteristics,material selection,manufacturing process,finite element analysis analysis and research.After field practice verification,the improved drive arm not only greatly improves the stress concentration and cracking phenomenon,but also has excellent comprehensive performance of its structure and material,and other equipment improvements can be analyzed by reference.
维普
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