提高无机超滤膜运行效率的措施研究

针对冷轧废水采用无机超滤膜处理工艺运行中存在的问题,从工艺、膜清洗等方面进行分析、探索,总结了提高无机超滤膜处理能力的措施。     

冷轧滚筒式飞剪介绍及维护要点

通过分析飞剪的典型结构,介绍了飞剪工作原理以及冷轧飞剪的应用概况和特点,经实践总结了飞剪的检修维护要点,该经验对飞剪检修有较大的参考作用。     

可逆冷轧机过程自动化系统的研发

针对高精度现代冷轧带钢生产需求,提出了基于．NET平台的可逆冷轧机过程自动化系统框架开发,介绍了系统的软硬件构成和功能;根据可逆冷轧机过程自动化系统的实际工作过程,阐述了基于人工智能算法的轧制力预报和自学习算法、轧制道次分配及其优化算法,通过优化过程参数可提高生产效率和产品质量。     

精轧铜带材表面除油问题探讨

分析了轧制铜带材表面残油产生的原因,从工艺、设备两个方面论述了除油的方法。在工艺上降低除油难度,建议选用低黏度的基础油,降低轧制油中的醇、酸、脂等添加剂的含量以降低运动黏度。在设备上采用防溅挡板、强力抽吸的排烟装置、辊缝吹扫装置、挤油辊及吹扫梁等除油装置。     

Ta-7.5％W合金箔材冷轧过程中的位错结构演变

本文详细研究了Ta-7.5％W合金中取向为45°立方旋转织构{001}〈110〉方向的晶粒在冷轧变形过程中的位错结构和显微硬度演变规律.结果发现,当冷轧变形10％时,合金中形成了典型的bcc金属冷变形的位错结构,包括位错偶极子、位错反应形成的“剪刀”型位错以及位错碎片亚结构等;随着变形的进一步进行,其中一种晶粒中初期形...     

冷轧普碳黑退钢带不耐酸腐蚀原因及影响因素分析

对某公司生产的Q235钢冷轧黑退钢带镀锌前酸蚀后出现花斑及蚀坑的原因进行了分析,并通过腐蚀试验分析了影响普碳钢带耐酸腐蚀性的主要因素。结果表明：该冷轧黑退钢带酸洗时出现花斑和蚀坑等缺陷主要是由于其表层显微组织不均匀,珠光体呈聚集团状分布造成的;影响普碳钢带耐酸腐蚀性的因素主要有钢带的材质及组织状态;在相同的酸蚀条件下,钢中的碳含量越高,钢的组织变形越大,钢带越容易被腐蚀。     

7001铝合金薄壁管材工艺研究

研究了7001超硬铝合金薄壁管的加工工艺。结果表明,Al-Zn-Mg-Cu系的7001合金具有相对较好的冷加工性能,在一定工艺条件下完全可以生产薄壁管材,但应严格控制冷加工变形量。管材冷轧时的道次变形量控制在50%～60%,冷拔时的道次加工率不要超过30%。     

泰钢950mm可逆冷轧机工艺润滑系统的优化

通过对泰钢冷轧工艺润滑系统进行分析并结合该系统在泰钢冷轧厂950 mm可逆轧机上的使用情况,对该系统进行了优化和改进,取得了明显效果。     

Finite Element Simulation of Cold-Rolling Process of Shaped Steel Tube for Driving Shaft

 Based on the deformation characteristics of Y-type mill, this paper proposes a finite element model for dynamically simulating the formation process of shaped steel tube for driving shaft. The distributions of stress and strain were obtained from the simulation. The outer diameter and transverse wall thickness were also analyzed quantitatively. Experiment was done on Y-type mill. A comparison between simulation results and experiment results shows that the simulating results of shaped steel tube are in good agreement with the on-site data. The model could provide the basis for theoretical research and engineering applications of shaped steel tube rolling process.     

Research and practice on the vacuum filter in emulsion system for tandem cold strip mill

This paper introduces working principle and technical features of vacuum filter in emulsion system for tandem cold strip mill.Based on specific cases,this paper analyses and assesses the effect before and after using the emulsion system with the usage of the vacuum filter for strip mill.Compare with the effect when using the first generation vacuum filter,the emulsion quality is improved significantly by using the second generation vacuum filter,which at the same time ensures steady operation of the rolling mill and surface quality of the mill products. As a result,investment and running costs are lowered,emissions of the waste emulsion are reduced,waste water treatment costs are reduced and so as the environmental pollution.It can be seen the second generation vacuum filter has obvious economic and environmental benefits.Therefor,it suggests that the filter should be used widely in the field of automotive,environmental protection rolling steel and nonferrous metals.