Engine cylinder block and its remanufacturing method

Abstract

The invention discloses an engine cylinder block, and belongs to the technical field of engine remanufacturing. The engine cylinder block comprises a plurality of cylinder holes formed in a cylinder block body. A combined plating layer is arranged on the wall of each cylinder hole and comprises a copper plating layer and a nickel plating layer. The copper plating layers and the nickel plating layers are sequentially alternatively arranged from inside to outside along the cylinder block body. The invention further discloses a remanufacturing method of the engine cylinder block. The remanufacturing method includes the cylinder hole oil removing step, the cylinder hole preprocessing step, the combined brush plating step, the cylinder hole fine processing step and the spigot repair step. By the adoption of the engine cylinder block and the remanufacturing method of the engine cylinder block, the air void and the inner stress of the plating layers are greatly reduced, on the premise that the quality of the plating layers is guaranteed, the thickness of the plating layers can be greatly increased, the requirement for restoring the sizes of the cylinder holes is met, the bonding force between the plating layers is greatly enhanced, the sizes, out of tolerance, of the cylinder holes of the engine cylinder block are repaired, and the engine cylinder block with the cylinder holes of the sizes out of tolerance is remanufactured.

Description

technical field [0001] The invention belongs to the technical field of engine remanufacturing, and in particular relates to an engine cylinder block and a method for remanufacturing the engine cylinder block. Background technique [0002] Remanufacturing is an industry that implements high-tech repair and transformation of waste products. It is aimed at damaged or about to be scrapped parts. On the basis of performance failure analysis, life evaluation and other analysis, remanufacturing engineering design is carried out. Technology to restore the shape and precision of the workpiece, so that the quality of remanufactured products can reach or exceed that of new products. Engine remanufacturing is different from general engine manufacturing and engine overhaul, but a brand new maintenance method. Engine remanufacturing is the process of restoring an engine that has entered a certain life cycle into a new engine according to the remanufacturing process. [0003] The out-of-...

AI Technical Summary

Problems solved by technology

The cylinder block with out-of-tolerance cylinder bore is repaired by boring and reaming the cylinder bore, and there is a problem that the cylinder bore size is inconsistent with the new product, which makes the cylinder liner not universal, and it is difficult to purchase a suitable cylinder liner when replacing the cylinder liner. The accessories do not conform to my country's current guiding spirit that remanufacturing is to restore the original size and performance of the product, and are not suitable for mass remanufacturing

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