高速线材轧制用硬质合金轧辊的质量控制

通过对高速线材轧制用硬质合金轧辊 (轧槽 )失效机理的分析 ,提出了高速线材轧制用硬质合金轧辊质量控制的基本方法 ,认为轧辊质量控制的关键在于轧辊材料设计、生产工艺过程控制、轧制过程、轧机工况、轧辊储运装卸以及轧制环境因素的控制 ,并建议尽早制订相关的材料和产品质量标准。     

冶金工业的发展及其对冶金轧辊的需求

从冶金工业的发展现状可知高质量的轧辊仍是一个很大的市场。高速钢轧辊具有很强的竞争力。离心铸造法生产高速钢轧辊是主要的工艺方法。     

Technology of thermally sprayed anilox rolls: State of art,problems, and perspectives

This paper deals with the surfacing technology of ceramic anilox rolls. The rolls are used in the printing industry to transport the precisely determined quantity of ink in the flexographic printing machines. The technology of roll surfacing is discussed by taking the following aspects into account: preparation of the powder to spray the ceramic coating; thermal spraying of the duplex (bond coating and ceramic top coating); postspray finishing by grinding and polishing; and laser engraving. The powder used as the top coating of the aniloxes is chromium oxide. This powder might be prepared by such techniques as agglomeration, fusing, and crushing, etc. The preparation technique influences coating properties, such as microstructure (tested with SEM, OM, XRD, and XPS), open porosity, microhardness, and modulus of elasticity. Comparison of these properties enables optimum powder preparation techniques to be found. APS technique is used to coat the anilox rolls. Optimization of the plasma spraying parameters is discussed. Aniloxes are submitted to the grinding and polishing of the ceramic coating before laser engraving occurs. The final roughness of the finished coating is discussed in view of an optimum absorption of the laser light energy at engraving. Possible ways of reducing the spraying time are discussed, and future research toward improving the anilox roll quality is proposed.     

提高国产轧辊市场竞争力的探讨

近年来，我国轧钢企业进行了大规模的装备改进和技术更新，而冷、热轧带钢轧机，中厚板轧机和大型H型钢轧机用的大型优质轧辊却大部分依靠进口，为提高国产轧辊在这些产品上的市场竞争力，从加强轧辊技术的研究开发能力、改进轧辊核心制造能力和提高市场推广能力三方面进行了探讨。     

K/Na-V-Mo复合变质对轧辊用高速钢组织及性能的影响

通过对轧辊用高速钢进行复合变质及热处理。探讨了含碱金属K/Na以及V、Mo合金元素的变质剂的加入量对轧辊用铸造高速钢共晶组织的影响。试验结果表明：在1．0％范围内，随着复合变质剂含量的逐渐增加，共晶碳化物的形貌和分布得到了改善，晶粒得到细化，分布趋于均匀，轧辊用高速钢的硬度略有下降，但韧性有很大提高。变质剂含量继续增加，组织和性能没有明显改善。进一步分析表明：变质剂中的合金元素可促进在晶粒中或沿晶界均匀分布的非连续状硬质碳化物的生成．从而达到改善组织、提高力学性能的作用。     

斜辊矫直机辊型曲线的一种新算法

为了保证矫直质量 ,矫直辊应和管棒材呈线接触。基于此 ,本文从啮合原理的角度推导出了斜辊矫直机的矫直辊的理想型线 (双曲线 )。试验表明 :新算法与传统的包络算法相比 ,理论计算精度等级基本相同 ,但新算法表达方式更简练准确 ,使用新算法加工的矫直辊实际矫直效果更好     

改善辊型降低弯辊力提高工作辊轴承及轧辊使用寿命

论述了四辊可逆板带冷轧机较大的弯辊力对昂贵的轧辊及轧辊轴承使用寿命的影响,通过研究辊系的弹性变形曲线,找出合理辊系凸度曲线来降低弯辊力.     

碱性锌锰电池隔膜筒堆砌机的设计

在消化吸收国外引进设备的基础上，设计一种用于碱性锌锰电池隔膜筒自动堆砌的设备。该设备具有结构简单、自动化程度和生产效率高、无污染等特点，生产速度达150只／分，解决了碱性锌锰电池自动化生产线的设备配套问题。     

中板轧机支承辊轴承使用技术的改进

本文通过对中板轧机支承辊轴承烧坏的原因分析，介绍了轴承的技术改进，以及改进后的使用情况。     

A Model Coupling Method for Shape Prediction

 The shape of strip is calculated by iterative method which combines strip plastic deformation model with rolls elastic deformation model through their calculation results, which can be called results coupling method. Because the shape and rolling force distribution are very sensitive to strip thickness transverse distribution′s variation, the iterative course is rather unstable and sometimes convergence cannot be achieved. In addition, the calculating speed of results coupling method is low, which restricts its usable range. To solve the problem, a new model coupling method is developed, which takes the force distribution between rolls, rolling force distribution and strip′s exit transverse displacement distribution as basic unknowns, and integrates strip plastic deformation model and rolls elastic deformation model as a unified linear equations through their internal relation, so the iterative calculation between the strip plastic deformation model and rolls elastic deformation model can be avoided. To prove the effectiveness of the model coupling method, two examples are calculated by results coupling method and model coupling method respectively. The results of front tension stress, back tension stress, strip′s exit gauge, the force between rolls and rolling force distribution calculated by model coupling method coincide very well with results coupling method. However the calculation course of model coupling method is more steady than results coupling method, and its calculating speed is about ten times as much as the maximal speed of results coupling method, which validates its practicability and reliability.