Repair method for worn central disc of main exhauster in sintering plant

Abstract

The invention relates to a repair method for a worn central disc of a main exhauster in a sintering plant. The repair method comprises steps of preparation before repair, the repair process and detection after repair, and particularly comprises the following steps: cleaning a workpiece; detecting the size of each part of the main exhauster, and determining the damaged part and the abrasion; determining basic parameters of the main exhauster; conducting radial and end surface runout detection on the main exhauster; determining a repair scheme for the main exhauster; determining the repair technique according to a detection result; selecting welding materials, and replacing plates at the seriously worn part and the washing leakage part; partially welding strip-shaped wear layers on a wear-resisting plate, and conducting thermal tailor-melding on the wear-resisting plate; conducting partial thermal treatment on welding parts; polishing the welding parts to be smooth; conducting detection after repair. The repair method is good in wearing resistance, high in rigidity, few in cracks of a repair layer, high in fusion rate of a cladding layer and base metals of the central disc, and low in deformation of the main exhauster.

Description

technical field [0001] The invention relates to a welding repair method in the field of mechanical repair, in particular to a repair method after the middle plate of the main exhaust fan of a sintering plant is worn. Background technique: [0002] The main exhaust fan of the sintering plant is an indispensable key equipment on the production line. The wear forms of the fan under different working conditions are mainly: ① low-stress abrasive wear caused by the micro-cutting action of the abrasive in the dust-laden airflow; ② scour wear caused by the moving fluid containing hard particles rushing to the surface of the equipment at high speed; ③ Corrosive wear under the combined action of corrosion and wear. Due to the complex operating conditions of the fan, the types of wear are also different. According to the type of wear, the anti-wear measures generally adopted are: ① Take active anti-wear measures: reasonably design the fan structure, increase the guide device, change...

AI Technical Summary

Problems solved by technology

[0003]The purpose of this invention is to provide a durable Good abrasiveness, high hardness, less cracks in the repair layer, high fusion rate between the cladding layer and the base metal, and small impeller deformation. Using special technology and welding material technology to repair the middle plate of the main exhaust fan in the sintering plant after wear