欢迎登录材料期刊网

材料期刊网

高级检索

  • 论文(3)
  • 图书()
  • 专利()
  • 新闻()

Analysis of Rolling Pressure in Asymmetrical Rolling Process by Slab Method

TIAN Yong , GUO Yanhui , WANG Zhaodong , WANG Guodong

钢铁研究学报(英文版)

The plane strain asymmetrical rolling was analyzed using slab method. The contact arc was replaced by parabola, and the constant surface friction status was adopted during the analysis. The deformation area was divided into three zones according to the direction of the friction. Then, the three zones were studied, respectively. A rolling force model and a rolling torque model were developed based on the analysis, and they were used to analyze the influence of asymmetrical rolling factors on deformation area and unit pressure if they had good precision which was determined by comparing the calculated results with the measured ones.

关键词: asymmetrical rolling;slab method;asymmetrical factor;specific pressure distribution

Textures and Properties of Hot Rolled High Strength TiIF Steels

GUO Yanhui , WANG Zhaodong , ZOU Wenwen , LIU Xianghua , WANG Guodong

钢铁研究学报(英文版)

The texture evolution in a high strength TiIF steel during the processing of hot rolling, cold rolling, and annealing is studied. For comparison, both ferrite rolling and austenite rolling are employed. It is found that the texture type is the same after ferrite rolling and austenite rolling, but the texture intensity is much higher in the ferrite rolled sample. Furthermore, texture characteristics at the surface are absolutely different from those at the midsection in both ferrite rolled and austenite rolled samples, as well as under the cold rolled and annealed conditions. The shear texture {110}<001> disappears and orientation rotates along {110}<001>→{554}<225>→{111}<112>→{111}<110>→{223}<110> during cold rolling. Compared to the austenite rolled sample, the properties of the cold rolled and annealed sheet which is subjected to ferrite rolling are higher.

关键词: high strength TiIF steel;ferrite rolling;austenite rolling;texture

Effect of Processing Condition on Texture and Drawability of a Ferritic Rolled and Annealed InterstitialFree Steel

WANG Zhaodong , GUO Yanhui , ZHAO Zhong , LIU Xianghua , WANG Guodong

钢铁研究学报(英文版)

The processing conditions of the texture formation and deep drawability of a TiIF steel strip hotrolled in ferritic region and subsequently annealed were investigated. The rvalue increases with the decrease of reheating temperature, and finish rolling temperature and the increase of reductions in ferritic region. For lubricated ferritic rolling and annealing, the rvalue is raised up to 175, and elongation rate is over 50% at the finish rolling temperature of 650 ℃, which is suitable for DDQ grade products. However, the rvalue is below 10 in the case of unlubricated rolling. The Xray diffraction was used to analyze the textural characteristic of samples. For samples subjected to lubricated rolling and annealing, the strong {111}∥ND recrystallization texture is distributed homogeneously along the thickness direction, and the intensity of {110} recrystallization texture is very low even in surface. However, for unlubricated samples, the {111} texture is distributed inhomogeneously and is weak along the thickness direction, and {110}∥ND recrystallization texture is strong, which deteriorates the formability.

关键词: IF steel;ferritic rolling;annealing;deep drawability;texture

出版年份

刊物分类

相关作者

相关热词