LI Chang-sheng
,
YANG Hua
,
WANG Yan-fang
,
YU Yong-mei
钢铁研究学报(英文版)
The hot rolled strip of Fe-3Si steel was experimentally produced by thin slab casting and rolling (TSCR) process in the laboratory. The texture evolution rule was investigated during hot rolling and cold rolling. The texture distribution of cold rolled strips with four kinds of cold rolling reduction schedules was observed through X-ray diffraction method, and the orientation density variation of 1/16 layer, 1/8 layer, 1/4 layer, and 1/2 layer in thickness was analyzed. The cold rolled texture of steel A with four kinds of cold rolling reduction schedules was mainly composed of α and γ fibers. Cold rolling reduction ratio of 70% was more beneficial for obtaining more γ fibers. The γ fiber texture orientation density of {111}<011> and {111}<1 12> was the largest on the 1/8 layer and 1/4 layer and the least on the 1/16 layer and 1/2 layer for steel B. The texture orientation density of {001}-{223}<110> in the α fibers for steel C was increased, but the texture orientation density of {332}-{110}<110> was low.
关键词:
silicon steel
,
texture
,
hot rolling
,
cold rolling
,
thin slab
,
continuous casting
,
direct rolling
JIA Yue-cai
,
GUO Hai-rong
,
LI Ran
,
LI Hua-long
钢铁研究学报(英文版)
Deep drawing properties of hot rolled gas cylinder steel was investigated by using HP295 steel in terms of microstructure, texture, yield ratio, plastic strain ratio (r-value) and plastic anisotropy (Δr). The grains in the hot strip were largely equiaxed, and the texture was weak, containing α- and γ-fibre. Reheating temperature, finish rolling temperature and cooling rate after rolling influenced the ferrite-pearlite band formation significantly, and the yield ratio increased steeply with decreasing coiling temperature below 630 ℃. The anisotropy is relatively high due to retained severe ferrite-pearlite band. A mechanism of the band formation due to manganese segregation is elaborated and confirmed validly, from which the measures to avoid the band formation are worked out. Rolling parameters have been optimized by the measures, and industrial production of the gas cylinder steel has been made possible with much improved r-and Δr-values, while meeting other specifications.
关键词:
yield ratio
,
formability
,
ferrite-pearlite band
,
texture
,
plastic anisotropy
裴新华，，胡恒法，，刘振宇
钢铁
通过实验室固溶热处理试验和现场热轧工艺试验研究了板坯加热温度对AlN溶解的影响规律，并采用热力学计算进行了验证，比较了不同热轧加热温度的冷轧退火成品板的织构类型特征。研究结果表明：当板坯加热温度大于1150℃以上时，板坯中的AlN均能较充分溶解，其溶解量大于90%，常规的热轧板坯加热温度能够满足热轧镀锡原板AlN溶解的工艺要求。试验结果为制定合理的热轧镀锡原板加热温度提供了依据。
关键词:
加热温度
,
AlN
,
tin plate
,
texture
,
hot rolling
许令峰，，潘洪波，贾明霞
钢铁
采用X射线衍射仪分析IF钢铁素体区热轧织构以及退火织构的演化，在实验室热轧机上进行了IF钢的铁素体区热轧，研究了摩擦对IF钢铁素体区热轧、退火织构的影响。结果表明：无润滑轧制时，钢板表层形成强高斯织构组分{110}〈001〉，弱γ纤维织构，导致再结晶织构中高斯组分强度高，γ纤维织构强度低；润滑轧制时，钢板表层高斯织构组分强度降低，{100}〈011〉、γ纤维织构强度提高，退火后γ纤维织构强度提高。钢板中心受摩擦作用影响较小，轧制过程中发展为较强的α和γ纤维织构，退火后γ纤维织构成为主要织构组分。
关键词:
铁素体区热轧
,
texture
,
IF steel
