锻压技术

热轧卷取PHC管桩端板的带钢截面变形分析

英文标题：Analysis on deformation of strip section of PHC pipe pile end plate obtained by hot rolling coiling

作者：李建功曲祥旭

单位：华北理工大学

关键词：热轧卷取塑性变形绕制横截面

分类号：TG333.2

出版年,卷(期):页码：2015,40(8):71-74

摘要：

热轧卷取法主要是将带钢绕制成圆柱螺旋形，大大提升了PHC管桩端板的生产效率。带钢卷取过程中，外侧纤维受拉而减薄，内侧纤维受压而伸长，导致圆环端板内外侧厚度不同，影响产品质量。选取常用尺寸外圆直径为Φ510 mm、内圆直径为Φ295 mm、厚度为23 mm的端板毛坯为例，为使卷绕之后端板内外侧厚度一致，通过金属塑性变形理论计算所需带钢横截面尺寸为24 mm×21 mm×112 mm，将该尺寸截面的带钢利用ABAQUS进行卷绕模拟并分析，最终得到的毛坯截面尺寸为22.6 mm×23.5 mm×109.2 mm，卷取的模拟结果与理论计算结果较吻合，从而确定用热轧卷取法生产端板毛坯的合理截面尺寸。

The production efficiency of PHC pipe pile end plate is improved greatly by hot rolling, which mainly coils the strip steel into a helix. During the process of rolling, the outer side of the fiber becomes thinner under the tensions, while the inner side is elongated under the compress. As a result, the different thickness between the outside and the inside of the end plate affects the quality of the product. Took the end plate for example, it had the diameter of the outer circle Φ510 mm, the inner circle diameter Φ295 mm, and the thickness 23 mm. In order to make the internal and external thickness of the end plate nearly the same, the cross-sectional size of the strip should be 24 mm×21 mm×112 mm according to the theory of metal plastic deformation. Then the rolling coiling process was simulated and analyzed by ABAQUS, and the final cross-sectional size of the strip was designed as 22.6 mm×23.5 mm×109.2 mm. The simulation results are almost the same as the calculation results, and the reasonable cross-sectional size of the end plate blank produced by hot rolling was obtained.

基金项目：

河北省人才工程培养经费资助科研项目（A201400214）；华北理工大学培育基金项目（LDPY003）

李建功（1962-），男，学士，教授

参考文献：

［1］JC/T 947—2005，先张法预应力混凝土管桩用端板[S].JC/T 947—2005，End plate for pretensioned spun concrete piles [S].
［2］刘战英，史春辉.PHC管桩端板生产新工艺[J].轧钢，1996，（9）：31-33.Liu Z Y，Shi C H. New technology of end plate production for PHC pipe pile [J]. Steel Rolling，1996，（9）：31-33.
［3］栾小东，魏会莎，岳玉梅.厚板弯曲成形有限元数值模拟及工艺研究[J].热加工工艺，2014，43(11)：142-145.Luan X D，Wei H S，Yue Y M.FE simulation and process research on plate bending forming[J].Hot Working Technology， 2014，43(11)：142-145.
［4］Quach W M，Teng J G，Chung K F. Residual stresses in steel sheets due to coiling and uncoiling：a closed-form analytical solution[J]. Engineering Structures,2004，(4)：1249-1259.
［5］Luo C，Stahlberg U. Deformation of inclusions during hot rolling of steels [J].Journal of Materials Processing Technology, 2001，114(1)：87-97.
［6］陈明健，江克.A335 P9 大弯曲半径U型管制造技术[J].热加工工艺，2015，44(5)：144-147. Chen M J，Jiang K. Manufacturing technology research of A335 P9 U-type pipe with big bending radius[J].Hot Working Technology，2015，44(5)：144-147.
［7］冯杨，刘毅，阮锋.板料弯曲的变薄系数[J].锻压技术，2009，34(3)：51-52. Feng Y，Liu Y，Ruan F. Thinning coefficient of sheet metal bending [J]. Forging & Stamping Technology，2009，34(3)：51-52.
［8］曹金凤，石亦平.ABAQUS有限元分析常见问题解答[M].北京：机械工业出版社，2009.Cao J F，Shi Y P. Finite Element Analysis of Common Problem Solutions for ABAQUS[M].Beijing: China Machine Press, 2009.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】