缸盖为柴油机关重件之一,结构复杂,壁厚不均匀,尺寸精度要求高;毛坯加工完毕后要进行水压试验,内部组织要求致密。试验表明,熔化工艺的优化降低了铁液的缩松倾向,提高了缸盖内部组织致密性,成品率大大提高。 The cylinder head is one of the most important parts of diesel engine. The structure of the cylinder head is complicated, the wall thickness is not uniform, and the requirement for the dimensional accuracy is high. After the rough machining is completed, the hydrostatic test is carried out, and the internal organization requires compactness. Experiments show that the optimization of the melting process reduces the tendency of iron liquid to shrink, and improves the compactness of the internal structure of the cylinder head. The yield of finished products is greatly increased.