【摘要】 电渣熔铸一步成型新工艺又研制出了多拐曲轴。新工艺将精炼、铸造和整根曲轴的成型在同一设备中一次完成,省略了锻造或分段电渣铸焊。其力学性能已达到或超过了锻造曲轴。性能提高的主要因素是成分更均匀,纯净度更高,夹杂物更细小而分散且呈球状分布,结构更均匀致密,枝晶间距也更细小,未发现低倍疏松与偏析等缺陷。与模锻曲轴相比时金属利用率提高了30％,工序少,投资少、成本低。更多还原

【Abstract】 A new ESC process has been successfully to produce complete multicrank developed shafts by one step in a water cooled mold without forging and multistage ESC welding. The mechanical properties of the shafts are equal or superior to that of forged ones, owing mainly to the factors such as homogeneity, high cleanliness, spherical and dispersed inclusions, compact structure, fine dentrite spacing as well as the absence of macrodefects. Comparing with the die-forging shafts, the advantages of ESC crankshafts are higher metal yield (increased by 30%) and lower equipment investment and cost of production.更多还原