钢管除锈机设计与经验

介绍了钢管除锈机的基本原理及设计过程,实践证明:使用钢管除锈机不仅保证了除锈质量,还提高了工作效率。     

伍迪BM2.7离子膜电解槽的生产工艺控制

介绍了伍迪BM2．7复极自然循环电解槽的电解原理、NafionNX-982杜邦膜结构性质及电解过程中的重要参数，提出了伍迪电解槽的生产工艺控制指标，优化了电解槽操作条件，取得了良好效果。     

屏蔽泵使用过程中注意的问题

通过对屏蔽泵初次使用过程中出现问题的分析,指出屏蔽泵在安装时应注意的问题和正常运行中应注意的事项。     

盐水二次精制工艺流程和生产操作

介绍了盐水二次精制的工艺流程、操作方法以及树脂塔的再生原理和注意问题。通过加强对盐水二次精制生产条件和螯舍树脂再生过程的控制，提高了树脂性能，保证了螯合能力的发挥，生产的合格精制盐水满足了离子膜电解生产的要求。     

Web 日志挖掘中模糊C均值聚类研究

Web日志挖掘就是通过一定的方法分析Web日志数据,发现用户的访问习惯,帮助管理人员改进Web站点的性能和结构,提高用户获取知识的质量和速度.笔者首先在Web日志挖掘的背景下分析了模糊C均值聚类算法的缺陷,针对其的不足,在粗糙集理论的支持下,介绍属性信息量的概念,并通过计算待聚类对象的属性权值,区分重要性属性和噪音属性...     

Pressure distribution of combining center cavity slipper for axial piston pump

In order to improve lubricating characteristics of slippers in an axial piston pump, the combining center cavity slipper approach was proposed based on slipper shape and moving characteristic. The cylindrical coordinate was used in the lubricant area and mesh was made. The blockweight approach was implemented to deal with non-coincidence of mesh and shallow recess border in numerical method. The finite control volume method was applied in calculating pressure distribution. The flow conservation equation and film thickness model were resolved through Gauss-Siedel relaxation iteration. The calculation and analysis results indicate that compared to the slipper （1） slip- per pressure distribution is improved; （2） hydrodynamic pressure of the combining slipper is greatly increased; （3） inclining degree is greatly reduced; （4） negative pressure in lubricant film disappear. So the combining center cavity slipper is lubricated better.     

Molten pool and temperature field in CO_2 laser welding

0IntroductionCompared with conventional welding methods,laserwelding has many advantages,such as large penetrationratio,small HAZ,small welding deformation.Another ad-vantage of laser welding is easy to weld complicated com-ponents because laser can be transferred by mirrors andoptical fiber.The laser welding will find wide applicationswith the laser system developing.Induced-plasma,molten pool and keyhole are mainphenomena in study of laser welding process.The varietiesof them indicate the …     

修复热锻模的双金属堆焊技术

针对热锻模型腔失效形式，提出了采用双金属堆焊技术进行热锻模型腔修复的具体方法，即介绍了堆焊工艺方案，此方案对中小型企业在降低模具制造成本和生产周期有着很大的实用价值。