汽车板簧制造工艺及设备

介绍了汽车板簧卷耳和包耳的型式，并介绍了板簧的生产工艺和生产设备，着重介绍了全液压卷耳机的结构和技术参数。     

镍氢电池极板材料的制备方法

对镍氢电池极板材料制备方法进行了介绍。主要介绍了用电化学方法制备泡沫镍的技术,同时介绍了泡沫镍的发展状况及其应用。     

铝合金焊接结晶裂纹的防止

介绍了铝合金焊接裂纹的分类。从焊接冶金、焊接力学及焊接工艺三个方面介绍了防止介绍了防止铝合金焊接结晶裂纹的研究成果。     

造型线模具设计与制造

展望了造型线模具设计与制造的发展方向,对四大造型线进行了介绍,同时也介绍了常用的模板,根据公司多年的生产经验,重点介绍了造型线上的模样。     

造型线模具设计与制造

展望了造型线模具设计与制造的发展方向,对四大造型线进行了介绍,同时也介绍了常用的模板,根据公司多年的生产经验,重点介绍了造型线上的模样。     

我国挥发性缓蚀剂防锈技术的发展现状

介绍了挥发性缓蚀剂(VCI)的防锈原理,介绍了国内目前使用的VCI材料品种、构成及用途;对比了各种防锈技术的综合性能及应用效果;介绍了VCI的应用领域,分析了VCI的技术性能。     

机电一体化技术的现状与发展趋势

介绍了我国机电一体化技术的发展现状和未来的发展趋势,并简单介绍了机电一体化技术主要应用的几个方面,对机电一体化的核心技术进行了简要的介绍.     

沙钢高品质焊丝钢研发现状及重点产品

首先介绍了沙钢焊丝钢生产的技术装备和工艺路线;然后介绍了焊丝钢新品的研发流程,并简要介绍了提高焊丝钢工艺性能的低飞溅控制技术、高纯净焊丝钢的双渣冶炼技术、以及基于表面质量控制的热轧技术;最后介绍了部分新品焊丝钢的最新进展。     

抛喷丸技术用弹丸

介绍了国内抛喷丸用弹丸的分类,并作了弹丸的分类介绍.     

氧化铝水平溜槽越浓相输送技术

本文详细介绍了水平溜槽超浓相输送技术的开发历程及其基本原理，着重介绍了水平溜槽所具有的独特优点，同时介绍了新研制风动下料器所具有的优点。     

Measurement of surface crystallinity of PAA and PAANa coatings and its effect on hydrophilicity of coatings

1　INTRODUCTIONAsanimportantwater solublemacromoleculecompound,poly (acrylicacid) (PAA)anditssaltshavebeenwidelyused[1] .Utilizingitsfinefilm form ingcapacityandhydrophilicity ,Okoroaforetal[2 ] ,andPanetal[3] developedanewhydrophilicpaintforaluminiumfin[2 ,3] .Hydrophilic paintforheat ex changerofairconditioningdemandslittlesurfacecon tactangle ,sothatcontinuoushomogeneouswaterfilmcanformeasily ,andcandrainoffcondensedwa teronthesurfaceoffintimely[4 6 ] .Hydrophilicityofcoatingsisaffec…     

Stability analysis and optimization algorithms for the set-up of infeed centerless grinding

This paper introduces new algorithms for analysis and optimization of infeed centerless grinding, based on high-level integration of grinding models into a web-based simulation. This holistic approach to simulation facilitates system-level simulation and solvers for several interlinked problems associated with the process mechanics. Emphasis is on structuring the model-based simulation as well as adapting and incorporating the underlying models into the algorithms. Geometric lobing-, chatter- and spinning-related process stability, as well as a time domain continuity equation, are integrated into the simulation to analyze the main quality-related limitations of the process. Once the process stability is assured for the process set-up, optimization strategies and a new infeed cycle definition function are proposed to achieve a minimal or target cycle time. An example of experimental optimization is provided to compare a high-quality process with a target cycle time to an optimized high-productivity process – demonstrating a 70% reduction in cycle time.     

Elements of intelligent process control for plasma deposition

Induction-coupled plasma deposition (ICPD) is currently a laboratory process relying on operator expertise rather than automated control. Intelligent process control for the ICPD process, which consists of integration of processing knowledge, process models, process sensors and control technology, offers the opportunity to provide closed-loop control as well as intelligent supervisory control to accelerate process development and bring the ICPD process to full-scale production. Intelligent process control for ICPD offers benefits such as higher material quality, control of the matrix micro-structure, cost reduction, higher process yield, and shorter development and production cycle times.     

Pulsed LASER-(micro)TIG hybrid welding: Process characteristics

A variant from the laser-arc hybrid welding process family which combines a pulsed laser process (Nd:YAG) and a pulsed (micro)TIG welding process is described.For studying the present variant process’ characteristics experimental work was carried out using video data acquisition and thermal imaging. In this paper, the characteristics of the present hybrid welding process variant and the influence of TIG welding parameters onto the process stability and the welding process result are presented. The experimental work revealed that the transient hybrid coupling phenomena, which is specific to the present hybrid process variant, has an important influence onto the process stability and the processing result. At the same time a strong interaction between the controlled process parameters was observed and that rather small changes to the process parameters values have a strong effect onto the process stability. The recommended TIG frequency domain for using as well as the variant which provides the best option to attenuate the penetration variation, specific to pulsed laser welding, was determined. The TIG frequency values which seem to lead to a stable welding process are of the same order as the ones used for laser pulse repetition rates. The variant that leads to an attenuation of the penetration is pulsed TIG-laser (with TIG as the leading process).     

Optimization of casting process based on the theory of inventive problem solving

Optimization of casting process involves the adjustment of parameters as well as the improvement of process schemes and measures. This paper proposes a new method based on the Theory of Inventive Problem Solving (TRIZ) for casting process optimization, and realizes the idea of applying TRIZ to optimize the casting process of a magnesium alloy intake manifold. By this method, the casting process is optimized so as to remove the shrinkage pores. The successful optimization of casting process demonstrates the feasibility of the proposed method.     

How to avoid the ‘invisible gorilla’ in aluminum smelting process control: Visual guidelines

Over the last three decades, process control in aluminum smelters has improved significantly as it is the biggest leverage for cost and energy reduction in production and product quality improvement, as well as for meeting environmental compliance. The implementation of computerized automatic control systems two decades ago was a step change in improvement in the state of the art of process control. However, the complex and dynamic nature of the process requires human monitoring, diagnosis, and intervention from time to time. This study investigates the use of the supervisory screen of the control system of a smelter, as well as the effectiveness of visual guidelines to help the operators to identify process abnormalities. The results show that visual guidelines such as voltage patterns which are used as a reference improve the performance of the operators. Detection time and falsealarm rates were reduced in addition to increasing detection sensitivities. It is proposed that a higher level of human and system interaction would improve the overall performance process control.     

过程方法管理在无损检测中的应用

介绍了过程方法的定义及管理要素。论述了由于无损检测是鉴别特殊过程产品质量的一种手段,因而在无损检测过程中推行过程方法十分必要。过程方法使无损检测过程要素管理更加科学,过程分析更加严密,过程操作更加规范,业绩考核更加量化,因此能行之有效地确保产品质量和工作质量。     

Application of two dimensional (2D) FEA for the tube hydroforming process

Use of FEM in the metal forming process has been a proven analysis tool. Two-dimensional FEA for simplified sections can help to reduce time and cost in part, tooling and process design in tube hydroforming technology as it is a relatively new process, and the existing experience and knowledge base is not as broad as with other forming processes. Some case studies are presented to demonstrate the use of two-dimensional FEA in the hydroforming process. Upon verification through comparison of FEA predictions with experimental results, further planned simulations are conducted to generate simple design rules on geometrical and process parameters.     

3D welding and milling: part II—optimization of the 3D welding process using an experimental design approach

A process of combined additive and subtractive techniques for the direct freeform fabrication of metallic prototypes and tools is being developed by the authors. This hybrid process, called ‘3D welding and milling’, uses gas metal arc welding (GMAW) as an additive and conventional milling as a subtractive technique, thereby exploiting the advantages of both processes. In this paper, the results of the optimization of the deposition process using a statistical approach as well as the result of plastic injection molding with the inserts fabricated by this hybrid process are described. The result proves the applicability of the 3D welding and milling process for direct fabrication of metallic prototypes and tools.     

Investigation on the stepping arc stud welding process

0IntroductionArc stud welding is gradually becoming an increasingimportant joining process fromthe firstpractical applicationdeveloped originally for the shipbuilding industry as a re-placement of the time consuming drilling and boltingprocess in1939[1].T…