板形缺陷与板材横向厚度分布的映射研究
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摘要
板形尺寸精度是板带轧制生产工艺中的重要质量指标。一般认为轧后出口板带材的横向厚度分布与轧辊有载辊缝的形状相同,文章根据体积不变原理,推导出板形(平直度)与板厚横向分布的关系;并采用影响函数法计算轧后板带材出口横向厚度分布,根据横向厚度分布与前张应力的关系,找出板形缺陷与板材横向厚度分布的映射关系;并通过实测板材横向厚度验证了板形缺陷与板材横向厚度分布映射关系的准确性。
Plate-shaped dimensional accuracy is an important quality indicator in the strip rolling production process.It is generally considered that plate transverse thickness distribution has the same shape with the loaded roll gap shape.According to the principle of volume constant,the relationship between plate shape(flatness)and transverse distribution of the thickness is derived.The transverse thickness distribution of rolled strip exit is calculated by using the influence function method.According to the relationship between the transverse plate thickness distribution and front tension stress,the mapping relationship between flatness defects and transverse plate thickness distribution is found out and the accuracy of the mapping relationship between flatness defects and transverse plate thickness distribution is verified through the transverse thickness measured.
Plate-shaped dimensional accuracy is an important quality indicator in the strip rolling production process.It is generally considered that plate transverse thickness distribution has the same shape with the loaded roll gap shape.According to the principle of volume constant,the relationship between plate shape(flatness)and transverse distribution of the thickness is derived.The transverse thickness distribution of rolled strip exit is calculated by using the influence function method.According to the relationship between the transverse plate thickness distribution and front tension stress,the mapping relationship between flatness defects and transverse plate thickness distribution is found out and the accuracy of the mapping relationship between flatness defects and transverse plate thickness distribution is verified through the transverse thickness measured.
引文
[1]张志强.四辊冷轧机板带板形建模与分析[D].太原:太原科技大学,2012.
[2]胡国栋,孙登月,许石民,等.冷轧带材前张应力分布、横向厚差与板形关系[J].钢铁,1998,33(12):62-64.
[3]陈连生.金属模型与变形模型耦合计算热轧板凸度[J].河北理工学院学报,2002,24(2):17-24.
[4]骆拓,邓华,赵世庆,等.基于影响函数法的轧制压力横向分布规律分析[J].机械强度,2010,32(1):165-170.
[5]Jiang Z Y,Zhu HT,Tieu A K.Effect of rolling parameters on cold rolling of thin strip during work roll edge contact[J].Journal of Materials Processing Technology,2003,140(38):535-541.
[6]孙一康.带钢热连轧的模型与控制[M].北京:冶金工业出版社,2002:216.
[7]日本钢铁协会.板带轧制理论与实践[M].王国栋,吴国良,译.北京:中国铁道出版社,1990:458.
[8]王国栋.板形控制和板形理论[M].北京:冶金工业出版社,1986:293-294.
[9]骆拓,邓华,李凤轶,等.板宽对轧辊受力分布的影响规律[J].机械设计与制造,2008(12):200-202.
[2]胡国栋,孙登月,许石民,等.冷轧带材前张应力分布、横向厚差与板形关系[J].钢铁,1998,33(12):62-64.
[3]陈连生.金属模型与变形模型耦合计算热轧板凸度[J].河北理工学院学报,2002,24(2):17-24.
[4]骆拓,邓华,赵世庆,等.基于影响函数法的轧制压力横向分布规律分析[J].机械强度,2010,32(1):165-170.
[5]Jiang Z Y,Zhu HT,Tieu A K.Effect of rolling parameters on cold rolling of thin strip during work roll edge contact[J].Journal of Materials Processing Technology,2003,140(38):535-541.
[6]孙一康.带钢热连轧的模型与控制[M].北京:冶金工业出版社,2002:216.
[7]日本钢铁协会.板带轧制理论与实践[M].王国栋,吴国良,译.北京:中国铁道出版社,1990:458.
[8]王国栋.板形控制和板形理论[M].北京:冶金工业出版社,1986:293-294.
[9]骆拓,邓华,李凤轶,等.板宽对轧辊受力分布的影响规律[J].机械设计与制造,2008(12):200-202.