Manual arc welding repair method for centrifugal blower after impeller blade abrasion
A technology of manual arc welding, impeller blades, applied in the direction of arc welding equipment, manufacturing tools, welding equipment, etc.
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Embodiment 1
[0039] The method to detect the defects on the surface of impeller blades that affect the mechanical properties of the blades is to spray a layer of red penetrant on the repaired surface of the impeller blades and wait for 10-15 minutes, then use a cleaning agent to clean the penetrant on the workpiece. Spray a layer of white developer on the surface, if there are pores, red dots will appear, and if there are cracks, red lines will appear.
[0040] Carry out heat treatment on the repaired centrifugal fan impeller to remove residual stress. The method used is to place the repaired centrifugal fan impeller in a heating furnace at a temperature of 600-650°C, and then keep it warm for 2 hours. When the temperature drops below 200°C After the oven.
[0041] Example 2:
[0042] The first step of preparation before repair: Disassemble and disassemble the centrifugal fan equipment numbered RZ-LF-0171 to be repaired, mark it, clean the workpiece with a high-pressure water gun, and dea...
Embodiment 2
[0045] The method to detect the defects on the surface of impeller blades that affect the mechanical properties of the blades is to spray a layer of red penetrant on the repaired surface of the impeller blades and wait for 10-15 minutes, then use a cleaning agent to clean the penetrant on the workpiece. Spray a layer of white developer on the surface, if there are pores, red dots will appear, and if there are cracks, red lines will appear.
[0046] Carry out heat treatment on the repaired centrifugal fan impeller to remove residual stress. The method used is to place the repaired centrifugal fan impeller in a heating furnace at a temperature of 600-650°C, and then keep it warm for 2 hours. When the temperature drops below 200°C After the oven.
[0047] Example 3:
[0048] The first step of preparation before repair: Disassemble and disassemble the centrifugal fan equipment numbered RZ-LFZ-0161 to be repaired, mark it, clean the workpiece with a high-pressure water gun, and de...
Embodiment 3
[0051] The method to detect the defects on the surface of impeller blades that affect the mechanical properties of the blades is to spray a layer of red penetrant on the repaired surface of the impeller blades and wait for 10-15 minutes, then use a cleaning agent to clean the penetrant on the workpiece. Spray a layer of white developer on the surface, if there are pores, red dots will appear, and if there are cracks, red lines will appear.
[0052] Carry out heat treatment on the repaired centrifugal fan impeller to remove residual stress. The method used is to place the repaired centrifugal fan impeller in a heating furnace at a temperature of 600-650°C, and then keep it warm for 2 hours. When the temperature drops below 200°C After the oven.
[0053] The above disclosures are only specific embodiments of the present invention, but the present invention is not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of th...
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