洛阳装备制造业发展中存在的问题与对策

洛阳装备制造业具有雄厚的工业基础和显著的科技优势,但发展中存在企业自主创新能力较差、产品结构不够合理等问题,为此,本文提出应通过加大政策支持力度、深化科技体制改革等途径促进洛阳装备制造业发展。     

降低钢桥桥面铺装体系温度方法探索

通过对钢桥桥面铺装结构层和铺装材料的研究,并未完全解决钢桥面铺装的问题。经过理论分析,提出新的方法,即在钢桥底板及腹板涂SR反射隔热保温涂料,可以降低钢桥铺装体系温度。     

Computer simulation of the continuous annealing recrystallization for cold-rolled strip in galvanizing line

The continuous heating transformation program is developed to investigate the influence of continuous annealing technological parameters on recrystalization for cold-rolled strip in galvanizing line. This program can be used for the calculation of the continuous annealing temperature field of strip steel, determination of the start and end time of recrystallization in continuous heating process, and procurement of the continuous heating transformation diagram. The temperature field for continuous annealing is simulated by means of finite difference method. Based on the Scheil superposition principle, the continuous heating transformation curve is obtained by using time temperature transformation (TTT) curve which is measured experimentally. The developed program has been used in practice, and the strip speed on production line increases by more than 10%.     

Analyse of warm surface rolling on the grooved steel axle

Warm surface rolling is a working process between room temperature and re-crystallization temperature. With warm surface rolling of steel grade 45 grooved axle, its fatigue lifespan was measured by the endurance bending test. The influence of surface rolling reduction on the axle fatigue life period was experimentally studied at different surface rolling temperatures. The experimental results show that the fatigue life of the steel axles can be significantly improved by the warm surface rolling process. The optimum rolling reductions for the maximum fatigue life at different warm surface rolling temperatures were explored. The microstructures of the steel axles were analyzed. The surface strength improved by refining grains after the warm surface rolling was calculated by the Hall-Petch model. These research achievements could be also valuable to the relevant works.     

Forging penetration efficiency of steel H13 stepped shaft radial forging with GFM forging machine

The numerical thermal mechanical simulation of radial forging process of steel H13 stepped shaft with GFM (Gesellschaft fur Fertigungstechnik und Maschinenbau) forging machine was carried out by three-dimensional finite element code DEFORM 3D. According to the effective plastic strain, the mean stress and the mean plastic strain distribution of the radial forging, the forging penetration efficiency (FPE) was studied throughout each operation. The results show that the effective plastic strain in the center of the forging is always greater than zero for the desirable larger axial drawing velocity. The mean stress in the center of the workpiece is proposed to describe hydrostatic pressure in this paper. There is compressive strain layer beneath the surface of the workpiece to be found, while there is tensile strain core in the center of the workpiece. These results could be a valuable reference for designing the similar forging operations.     

加强高校专业课双语教学的思考

在高校专业课中开展双语教学,是高等教育教学改革的有益尝试。本文在分析高校专业课双语教学必要性的基础上,提出从选择合适的学生班级、教材、教学内容、教学方式、方法和培训双语师资六个方面来加强高校专业课双语教学。     

基于计算机视觉技术的桥梁管养应用综述

计算机视觉技术能够简化工作,提高效率,在工业、检测等各种领域得到广泛的应用.桥梁作为交通系统的重要组成部分,其运营养护至关重要.结合大数据建立完善的智能化桥梁管养体系具有长远意义.首先简要介绍了桥梁管养技术发展所面临的问题与应用现状,然后详细介绍了计算机视觉技术在桥梁管养中的研究与应用情况,最后总结和展望了基于计算机视觉的桥梁管养应用中存在的问题及其研究趋势和应用前景.     

洛阳银行银行卡营销策略研究

我国“一带一路”战略的实施,给洛阳带来了前所未有的发展机遇,同时也为银行卡业务发展提供了广阔的空间.本文研究了洛阳银行银行卡营销策略,在对洛阳银行银行卡业务进行SWOT分析基础上,结合洛阳经济环境及洛阳市银行卡市场波特五种竞争力分析,从产品、价格、渠道、促销四个方面探讨了洛阳银行银行卡营销策略.