Process for machining wearing ring of cylinder liner of large low-speed marine diesel engine

Abstract

The invention discloses a process for machining a wearing ring of a cylinder liner of a large low-speed marine diesel engine. Radial clamping force which is applied by a clamping jaw for machining of a vertical lathe to the wearing ring is converted into axial clamping force applied to the wearing ring through a novel fixture to ensure that the action point of the clamping force is separated fromthe machining surface of a blank, and a workpiece is machined in a free state. Therefore, the phenomenon that the workpiece is deformed after the radial clamping force is applied to finish machining can be avoided. By repeatedly adjusting cutting parameters and process steps of a machine tool, the resonance amplitude is reduced so as to guarantee stable cutting and quality. The stress influence which is produced during turning can be eliminated in a mode of increasing processing frequency of a semi-finished product. Before finish machining and forming, stress deformation is eliminated throughone-time heat treatment, so slight deformation caused by machining can be eliminated, and inner stress of the workpiece can be released quickly and balance is achieved.

Description

Technical field: [0001] The invention relates to a process for processing a wear-resistant ring of a cylinder liner of a large low-speed marine diesel engine. Background technique: [0002] In order to enhance the abnormal wear of the relevant parts of the large low-speed marine diesel engine, a wear-resistant ring is set and inlaid on the upper part of the cylinder liner of the diesel engine. Practice has proved that the setting of the wear ring plays a very important role in suppressing the abnormal wear of the relevant parts of the diesel engine. [0003] RTA large low-speed marine diesel engine cylinder liner wear ring, its outer diameter is The wall thickness is only 8-10mm, the upper end is 20° groove, R10 arc transition, and the dimensional tolerance and surface roughness requirements are very strict, which belongs to the typical large diameter and thin wall parts. The processing of such large-diameter, thin-walled parts has always been a difficult point in my coun...

AI Technical Summary

Problems solved by technology

With the vigorous development of the international shipbuilding industry, the price of imported parts of marine diesel engines is constantly rising, and the increase is alarming, which undoubtedly increases the cost of factories building marine main engines

Images