Crack Defect Analysis and Countermeasures of Large Marine Diesel Engine Cylinder Block
Author of the article:陕西柴油机重工有限公司
Author's Workplace：球墨铸铁 裂纹 残余应力
Key Words：ductile iron crack residual stress
Abstract：The crack defect of cylinder block of large nodular cast iron diesel engine was analyzed by SEM and EDS. The results show that the cracks are located in the thin section of the cylinder block and are mainly transgranular fracture caused by the large casting residual stress. By reducing external resistance and improving microstructure, cracks are eliminated in batch production and the quality of cylinder block is improved.
