一、35GrNiMo钢石状形成及特征对石状断口产生的原因,目前国内外存在着各种不同的看法。石状断口属于一种过热断口,35GrNiMo纲加热低于1300℃,然后进行调质并不产生石状,断口以纤维状为基体(图1)。当加热温度超过1350℃,经缓冷,萘状颗粒大于1毫米时,调质后一 First, the formation and characteristics of 35GrNiMo steel-like stone-shaped fracture causes, at present there are all kinds of different opinions at home and abroad. Stone fractures belong to a superheat fracture, 35GrNiMo Gang heating less than 1300 ℃, and then quenched and tempered does not produce stone-like, fractured fibrous matrix (Figure 1). When the heating temperature exceeds 1350 ℃, by slow cooling, naphthalene particles greater than 1 mm, the first after conditioning