韩国水稻生产机械化技市考察报告

应韩国农林部农村振兴厅的邀请,我农业部农机化技术开发推广总站组织的赴韩水稻机械化生产技术考察团一行8人,于2000年6月26日～7月3日到韩国进行了考察.考察的重点有3个方面:一是水稻生产机械化;二是设施农业方面的情况;三是国家对农业方面的宏观政策等.     

水稻机械化生产技术

水稻机械化生产技术是在水稻生产过程中,使种子处理、简塑盘育苗、水田机械整地、机械插秧、机械收获等环节实现机械标准化作业。将水稻各环节生产机械化技术综合组装配套,以此规范水稻机械化生产作业质量,保证先进农机技术实施效果,提高水稻综合生产能力,促进农业增效和农民增收     

水稻生产机械化技术

从水田耕整地、水稻育身、水稻种植、水稻施肥和水稻收获五个过程全面论述了水稻生产机械化技术。     

水稻机械化生产技术探讨

水稻机械化全程一体化生产主要包含了机耕、机插、机收三个步骤,其中关键环节是机械化插秧技术在生产中的实际运用。而秧盘育秧和大田整地技术又决定了机械化插秧技术运用效果,就机械化秧盘育秧和大田整地技术操作要点作一介绍,以供参考。     

水稻全程机械化生产技术

水稻全程机械化生产技术是在水稻生产过程中,使种子处理、简塑盘育苗、水田机械整地、机械插秧、机械收获等环节实现机械标准化作业。将水稻各环节生产机械化技术综合组装配套,以此规范水稻机械化生产作业质量,保证先进农机技术实施效果,提高水稻综合生产能力,促进农业增效和农民增收。一、等离子体种子处理技术等离子体种子处理技术,是国家"863"科研成     

水稻生产全程机械化技术

水稻生产全程机械化技术是一项系统技术,包括:水田精细整地技术、旱育稀植机插深施肥技术、精确植保机械化技术、联合收获技术、水稻烘干处理及深加工技术等,是黑龙江省发展绿色、优质、高效水稻农业必须的高科技示范项目.     

水稻生产全程机械化技术

水稻全程机械化技术,通过采取工厂规模育秧、商品化供秧、组建机械化插秧、收获作业服务队等手段,实现流动作业,提高机械的利用率,促进稻区生产机械化进程。     

水稻生产全程机械化技术

水稻生产全程机械化技术,具体操作规程如下: 1.水稻棚盘育秧技术 盘土配制本田土含量占85%,腐殖土或草碳土占15%,采用3次混拌法拌匀盘土药剂和化肥,保证盘土粘结力,提高秧强度.     

水稻生产全程机械化技术发展趋势

阐述了辽阳县水稻生产机械化的现状,探索创新水稻的育秧方法,水稻生产机械化采取了工艺分段负责的新模式,并分析了所产生的经济效益与社会效益。     

大力推广水稻生产全程机械化技术

通过分析水稻生产全程机械化的推广现状,提出切实可行的推广措施,测试效益并展望发展前景.     

美国农产品加工及农业机械技术考察报告

4.花生收获机械也是大家一致关注的机型,由美国KELLEY MANUFACTUR ING CO公司生产. 该公司以生产田间中耕机械和花生收获机械为主,有大、中型系列产品,从作业环节上分为花生挖掘机械和花生拾收(摘果)机械,成龙配套.     

美国农产品加工及农业机械技术考察报告

应美国商务部和美国Sunbelt农业博览会的邀请,由农业部国际交流服务中心和部农机推广总站共同组织的农产品加工及农机化技术考察小组一行16人于2000年10月15日～30日赴美对美国农产品加工和农机技术进行了考察.此次考察活动受到了美国商务部的大力支持.通过考察,大家对美国的农业、农机发展情况有了更进一步的了解和认识,现就考察综合情况报告如下:     

An experimental investigation on composite fretting mode

An apparatus for composite fretting tests on a steel ball opposite to the inclined steel flat with different inclined angles (60° and 45°) have been carried out. During the tests, the maximum imposed loads were varied from 200 N to 400 N and 800 N at a constant loading speed of 12 mm/min. Dynamic analysis in combination with microscopic examinations through optical microscopy, profilometery, and SEM have been performed. Composite fretting behaviour has been analyzed and compared with the conventional fretting.     

基于TMS320LF2407A的数码卷绕设备

在分析了卷绕这一关键工艺特点的基础上,采用计算机控制技术和伺服驱动技术,提出了一种崭新的数码卷绕络筒方法,实现了电子防叠的功能.并针对其特点设计了以TMS320LF2407A DSP数字信号处理器为核心进行单锭控制的硬件系统和软件系统.实验结果表明,该系统能够基本满足卷绕机构高速、精密、松式的三大卷绕要求.     

An assessment of the level of informatization in the Korea mold industry as a prerequisite for e-collaboration: an exploratory empirical investigation

These days, the manufacturing industry is facing more severe competition in the global market than at anytime before. To survive in this competitive manufacturing environment, manufacturing companies have to deal with such issues as digitalization, globalization, agility, specialization, and collaboration. Particularly, collaboration between manufacturing companies, departments, systems and applications is becoming a very important strategic direction in the manufacturing industry. In this paper, we analyze the current status of the mold industry from both an information system (information infrastructure, information system), and business process viewpoint (collaboration), before attempting to apply e-collaboration to the mold industry. To accomplish this, the survey was conducted. The final study population of the survey consisted of 185 mold companies, and the response rate was relatively high at 40.5%. Additionally, Pearson’s correlation analysis was conducted in order to determine the kind of relationship that exists between the scale of the mold enterprise and three items .     

磁力研磨法去毛刺的实验研究

研制了去毛刺实验装置,用有限元法分析了加工间隙磁场分布,实验结果表明利用磁力研磨法能够去除棱边毛刺,并保持适宜的棱边圆角半径。     

An experimental investigation on micro machining of fine-grained graphite

Industrial applications of the micro milling process require sufficient experimental data from various micro tools. Research has been carried out on micro milling of various engineering materials in the past two decades. However, there is no report in the literature on micro milling of graphite. This paper presents an experimental investigation on micro machinability of micro milling of moulded fine-grained graphite. Full immersion slot milling was conducted using diamond-coated, TiAlN-coated and uncoated tungsten carbide micro end mills with a uniform tool diameter of 0.5 mm. The experiments were carried out on a standard industrial precision machining centre with a high-speed micro machining spindle. Design of experiments (DoE) techniques were applied to design and analysis of the machining process. Surface roughness, surface topography and burrs formation under varying machining conditions were characterized using white light interferometry, SEM and a precision surface profiler. Influence of variation of cutting parameters including cutting speeds, feedrate and axial depth of cut on surface roughness and surface damage was analysed using ANOVA method. The experimental results show that feedrate has the most significant influence on surface roughness for all types of tools, and diamond tools are not sensitive to cutting speed and depth of cut. Surface damage and burrs analysis show that the primary material removal mode is still brittle fracture or partial ductile in the experimental cutting conditions. 3D intricate micro EDM electrodes were fabricated with good dimensional accuracy and surface finishes using optimized machining conditions to demonstrate that micro milling is an ideal process for graphite machining.     

An investigation on sliding wear behavior of PVD coatings

Ti-6Al-4V alloy rubbing against aluminum-bronze 630 was evaluated in this work. High velocity oxygen fuel (HVOF) WC-10%Co-4%Cr thermal sprayed and TiN, CrN and DLC physical vapor deposition (PVD) coatings were applied to increase titanium substrate wear resistance. Pin-on-disk tests were performed with a normal force of 5 N and at a speed of 0.5 m/s, with a quantitative comparison between the five conditions studied. Results showed higher wear resistance for Ti-6Al-4V alloy DLC coated and aluminum-bronze 630 tribological pair and that the presence of graphite carbon structure acting as solid lubricant was the main wear preventing mechanism.     

An investigation on manufacturing process parameters of CNG pressure vessels

Mass production of CNG pressure vessels requires an accurate understanding of process effective parameters. In this paper, the finite-element method has been used to study the vessel manufacturing parameters. The FE model has been verified by experimental results. The entire manufacturing process, including deep drawing, redrawing and ironing, of an aluminum liner sample of CNG pressure vessels (without spinning) have been simulated. The deep drawing process has been modeled by using three types of dies: flat, conical and tractrix; then drawing force and wall thickness variations have been compared. In order to achieve the final diameter of the liner, the redrawing process has been implemented in a conical die. To obtain a uniform wall thickness, the ironing process has been simulated in two stages, and the required force and die angle for each process have been extracted. The result of this work presents an integrated perspective for decision-making on the manufacturing of CNG liners.