An online repair process for smooth shaft wear

Abstract

The present invention relates to the field of blenders, and specifically relates to an on-line repair technology for smooth shaft abrasion of a blender. The repair technology comprises the following steps of (1) determining a repair scheme according to an abrasion degree of a smooth journal working surface of the blender during an operation process with an outer sealing ring, and inspection and confirmation of surface cleaning, abrasion loss, surface defects, shaft size precision and runout; (2) maintaining an abrasion part, determining materials for smoothing and repairing, and ensuring matching of corrosion resistance and mechanical properties of a repair region and a substrate; (3) machining the abrasion part after welding is performed, namely performing machining by using an axle end lathe after the welding is performed; and (4) performing a color nondestructive test on the repair part. By utilization of a high-precision pulse cold welding technology, the repaired binding part is more abrasion-resistant than the original substrate.

Description

technical field [0001] The invention relates to the field of mixers, in particular to an on-line repair process for wear of a smooth shaft on a mixer. Background technique [0002] Such as figure 1 As shown, the smooth shaft sealing surface of a mixer in a chemical plant is worn. If it is not treated in time, it will cause the leakage of phosgene (a highly toxic gas) in the mixer, which will cause serious consequences. The stirring shaft is 5 meters long and weighs tens of tons. The space inside the device is narrow, so disassembly is very inconvenient and requires high disassembly and assembly costs. If the method of on-site repair processing is adopted, the time and cost of emergency repair can be greatly saved. Contents of the invention [0003] The purpose of the present invention is to provide an on-line repair process for smooth shaft wear, which adopts high-precision pulse cold welding technology, so that the repaired joint part will be more wear-resistant than th...

AI Technical Summary

Problems solved by technology

[0002] like figure 1 As shown, the smooth shaft sealing surface of a mixer in a chemical plant is worn. If it is not treated in time, it will cause the leakage of phosgene (a highly toxic gas) in the mixer, which will cause serious consequences.

The stirring shaft is 5 meters long and weighs tens of tons. The space inside the device is small, so it is very inconvenient to disassemble and requires high disassembly and assembly costs.

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