聚合物连注连轧成型中轧辊热平衡仿真分析
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摘要
根据传热学的基本理论建立了连注连轧成型技术中轧辊热平衡的理论模型,然后对轧辊的热平衡进行了仿真分析。结果表明,导热油以一定的进口流速能够到达与辊套内表面接触的支流管道,不会出现死点,而且在离入口远端各支流的流速基本均匀一致;轧辊表面的温度在通入导热油后温度变化均匀,温度差值在3℃以内,说明所设计的导热油道较合理,可以实现对轧辊热平衡的温度调节。
A theoretical model for heat balance of rollers during the continuous injection direct rolling process was established according to basic heat transfer theory,and then a simulation analysis was performed for heat balance of the roller.The results indicated that the heat transfer oil could reach the branch pipe in contact with the inner surface of the roller sleeve at a certain inlet flow rate,and no dead point was found.The flow rates kept uniformity from the inlet to the far ends of various tributaries.The temperature of roller surface was homogeneous with a deviation of3 ℃ after the heat transfer oil was passed through.The design of oil channels is reasonable,and it can effectively adjust the temperature of the rollers.
A theoretical model for heat balance of rollers during the continuous injection direct rolling process was established according to basic heat transfer theory,and then a simulation analysis was performed for heat balance of the roller.The results indicated that the heat transfer oil could reach the branch pipe in contact with the inner surface of the roller sleeve at a certain inlet flow rate,and no dead point was found.The flow rates kept uniformity from the inlet to the far ends of various tributaries.The temperature of roller surface was homogeneous with a deviation of3 ℃ after the heat transfer oil was passed through.The design of oil channels is reasonable,and it can effectively adjust the temperature of the rollers.
引文
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[9]曹光明,李成钢,刘振宇,等.双辊铸轧工艺温度场和流场耦合的数值模拟[J].钢铁研究学报,2008,20(9):23-26.Cao Guangming,Li Chenggang,Liu Zhenyu,et al.Numerical Simulation of Temperature Field Foupled with Flow Field Furing Twin 2Roll Strip Casting Process[J].Journal of Iron and Steel Research,2008,20(9):23-26.
[10]金珠梅,赫冀成,徐广.双辊连续铸轧工艺中流场温度场和热应力场的数值计算[J].金属学报,2000,36(4):391-394.Jin Zhumei,He Jicheng,Xu Guangjun.Numerical Simulation of Flow,Temperature and Thermal Stress Fields During Twin-roll Casting Process[J].Acta Metallurgica Sinica,2000,36(4):391-394.
[2]Wang Haixiong,Li Jibin,LüYonghu,et al.Key Technology of Continuous Injection Direct Rolling for Optical PMMA Plate[J].Advances in Mechanical Engineering,2014,(1):971756,1-9.
[3]关伟盛,黄汉雄,汪斌.微注射压缩成型超疏水表面的微结构设计和调控[J].高分子学报,2013,(10):1285-1289.Guan Weisheng,Huang Hanxiong,Wang Bin.Design and Manipulation of Microstructures on Micro Injection-compression Molded Super Hydrophobic Surfaces[J].Acta Polymerica Sinica,2013,(10):1285-1289.
[4]陈燕春,何文瀚,区仲荣.注射压缩成型技术在塑料光学透镜生产中的应用[J].制造技术与机床,2010,(2):159-161.Chen Yanchun,He Wenhan,Ou Zhongrong.The Application of Inject Compression Shaping Technologyin the Production of plastic Opticas Lens[J].Manufacturing Technology&Machine Tool,2010,(2):159-161.
[5]贺永,傅建中,陈子辰.微热压成型过程聚合物流动特性研究[J].浙江大学学报(工学版),2008,42(5):858-862.He Yong,Fu Jianzhong,Chen Zichen.Flow Behavior of Polymer During Micro Hot Embossing[J].Journal of Zhejiang University(Engineering Science),2008,42(5):858-862.
[6]C Liu,J M Li,J S Liu,et al.Deformation Behavior of Solid Polymer During Hot Embossing Process[J].Microelectronic Engineering 2010,l8(7),200-207.
[7]王海雄,吕永虎,李积彬.PMMA熔体黏度影响因素实验研究.中国塑料,2016,30(2):75-78.Wang Haixiong,LüYonghu,Li Jibin.Experimental Study of Factors Affecting PMMA Melt Viscosity[J].China Plastics,2016,30(2):75-78.
[8]张德明,陈小敏.用熔体流动速率仪测试流变行为的数据处理[J].中国塑料,2000,14(4):67-65.Zhang Deming,Chen Xiaomin.Data Processing on Rheological Behavior Test by Melt Flow Rate Instrument[J].China Plastics,2000,14(4):67-65.
[9]曹光明,李成钢,刘振宇,等.双辊铸轧工艺温度场和流场耦合的数值模拟[J].钢铁研究学报,2008,20(9):23-26.Cao Guangming,Li Chenggang,Liu Zhenyu,et al.Numerical Simulation of Temperature Field Foupled with Flow Field Furing Twin 2Roll Strip Casting Process[J].Journal of Iron and Steel Research,2008,20(9):23-26.
[10]金珠梅,赫冀成,徐广.双辊连续铸轧工艺中流场温度场和热应力场的数值计算[J].金属学报,2000,36(4):391-394.Jin Zhumei,He Jicheng,Xu Guangjun.Numerical Simulation of Flow,Temperature and Thermal Stress Fields During Twin-roll Casting Process[J].Acta Metallurgica Sinica,2000,36(4):391-394.