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对ＳＵＳ４１６不锈钢的热加工纵向裂纹和钢坯横向、纵向的热塑性研究结果表明；钢坯的横向热塑性在９００～１０００℃温度区间存在一明显的低塑性区。在变形应力作用下，裂纹沿条带串状分布的硫化物和基体相界萌生和扩展，形成纵向开裂。采用６３０ｋｇ锭锻造开１３０ｍｍ方坯再轧制成材的工艺，加热温度控制在１２００～１２５０℃，热加工开始温度为≥１１００℃，终了温度为≥１０００℃，则基本消除了这种裂纹。使综合成材率提高了２５％左右。
Longitudinal longitudinal cracking of the hot-rolled SUS416 stainless steel and the transverse and longitudinal thermoplastic properties of the billet show that the transverse thermal plasticity of the billet has a distinct low-plasticity zone at 900-1000 ° C. Under the effect of deformation stress, the interface between the sulfide and the matrix along the strip-like distribution of cracks propagates and expands to form a longitudinal crack. 630kg ingot forging open 130mm billet and then rolled into a timber process, the heating temperature is controlled at 1200 ~ 1250 ℃, thermal processing start temperature is ≥ 1100 ℃, the end temperature is ≥ 1000 ℃, the basic elimination of this crack. The comprehensive improvement rate of about 25%.