The full hydrogen bell annealing furnace is a discontinuous variable temperature furnace, and the furnace temperature changes with time according to the prescribed heating system. There is a sealing ring between the built-in flange and the flange of the hearth, and a closed space is formed between the inner cover and the hearth by manual compression (or hydraulic cylinder compression), and the workpiece to be processed is placed inside. HD700-3D/HD1000-3D/HD1250-3D HIGH SPEED 3D CNC BEAMS DRILLING LINE According to different process stages, the pressure in the furnace and the amount of protective gas in the furnace are controlled by the opening/closing of each intake/exhaust valve on the furnace platform, so as to achieve the quality of the workpiece to be processed and the safety of the equipment.D SERIES CNC DRILLING MACHINE FOR PLATES The protective gas needs to be filled before and during the working process of the equipment, and the protective gas includes pure hydrogen and pure nitrogen. It is filled with pure nitrogen during the normal heating process of the equipment, and filled with pure nitrogen during the sealing inspection, safety purge and pressure replenishment of the equipment.Sintered NdFeB Vacuum Heat Treatment Process During the heating process in the furnace, the material is prone to reactions such as decarburization or carburization. Oxidation and decarburization will cause serious defects on the surface properties of the workpiece. To remove the oxide film and decarburization layer, more complicated processes and a lot of costs are required. For ultra-thin or ultra-fine steel with high quality requirements, it may cause The size is not right. Filling with protective gas can reduce or avoid the occurrence of the above situation.Effect of Magnesium on Aluminum Alloy Vacuum Brazed Joints
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