奢侈表，该怎么个爱法？

1／4个世纪的改革开放，已使一部分中国人发了，腰包也鼓了，吃腻了，穿烦了，汽车有了，豪宅住了，还有太多的钱不知该买哈。想来想去觉得买块手表好，花个几万，几十万，甚至上百万元买块进口高价奢侈表往手上一戴，财富绝对集中，那钱花的痛快!也不枉这辈子富裕了一把。可没想到，戴高价奢侈表也有烦恼，那么贵的表，也没感觉防水性能比普通表高到哪儿，一不小心水也进去了！要说那性能吧，     

SHL10-1.29-AⅡ型锅炉加装过热器的节能分析

通过对锅炉加装过热器的改造，提高了锅炉的利用率，满足了生产需要，节约了能源，降低了产品成本，为该厂节省了大量资金，保证了锅炉的安全运行。     

区域性企业信息化市场集成信息系统研究

分析了区域性企业信息化市场的构成及综合信息需求，并从整体推进和优化配置信息化资源的角度，介绍了区域性制造业信息化工程实施中存在的问题，在此基础上，进行了集成信息系统的需求分析，并对其定义，特征、结构及主要功能进行了研究，分析了其中的关键技术，结合典型区域主管部门及中介推进服务机构决策需求，开发了原型系统，并进行了初步应用。     

不但要经营好产品 还要经营好人才——桂林机床股份有限公司“人才工程”推动企业蓬勃发展

近年来，桂林机床股份有限公司为适应市场经济的激烈竞争，大胆实施了具有自身特色的“人才工程”，构筑了基本适应市场需要的人才选拔、培养、使用、吸引的激烈机制，做到了不但要经营好产品，还要经营好人才，促进了企业以信息化带动工业化，用高新技术改造传统产业，实现了产品升级换代，提高了企业核心竞争力，使企业闯出了一条不拘一格培养和使用人才的新机制。     

纳米压痕数字控制系统分析

本文首先介绍了纳米压痕系统的结构及原理，然后着重对其控制系统进行分析，研究了控制参数的设置方法，分析了系统的稳定性，给出仿真结果，最后，分析了执行元件存在的误差，并给出了消除误差的方法。     

电导法固体材料水份测量仪

本文给出了固体电导率与含水率之间回归一化线性数学模型，不同物质的线性模型仅斜率和截距不同，只要校正即可实现通用性，这与历史认识有差异，测量仪利用网络理论解决了高阻测量问题，利用线性叠加原理实现了温度补偿并提高了测量准确度，利用单片机对模型进行编程计算和校正，从而实现了智能化，采取隔离，滤波，ＷＴＤ等技术，提高了系统的可靠性。     

巴氏合金模具的机械电解复合抛光研究

针对具有复杂曲面的巴氏合金模具的难抛光，低效率等问题，在数控机床上将电解加工和机械抛光相复合，对模具型腔进行高效抛光，获得了良好的表面质量，由于采用CAD／CAM技术，保证了加工精度，提高了加工效率，文中探讨了数控机床机械电解复抛光的机理，并分析了抛光结果。     

车床法兰夹具

介绍了对于批量生产，而形状，结构特殊，在车床上难以装夹的零件，应用尘兰夹具，零件装夹，定位容易，既保证了质量，又提高了生产效率，在应用中有一定的推广价值。     

液压万能材料试验机油路部分改造和数据库联网功能实现

本文提出了液压万能材料试验机的油路改造办法，引入了比例溢流阀，并分析了其PID控制算法，建立了系统的总体组成，实现了数据库联网的功能，达到了改造的性能目标。     

核电厂地震加速度计现场标定振动台的研制

针对现有的核电厂地震加速度计的标定方法无法同时涵盖规范规定参数检定要求，也无法实现核电现场就地标定检测的问题，设计了一种基于柔性金属弹片悬挂结构的便携式振动台，分析了振动台的机械结构，给出了振动台动力学方程；依照实际工程应用需求，选取了合适的参数和材料，进行了振动台的三维建模和有限元分析，制造了振动台样机，并对样机进行了测试，测试结果表明，振动台固有频率在1Hz以下，量程可达到1g，横轴灵敏度小于1%，净重在40kg以内，具备便携式特征，满足核电厂地震加速度计的现场标定参数检测的要求。     

CURING PROCESS OF PHOTOPOLYMER RESIN BOND DIAMOND TOOLS

Analytical simulation and corresponding proof-test are adopted to study the principle of the curing process of photopolymer resin diamond tools. The influence of the diamond as abrasives in photopolymer resin owing to the absorptivity of the diamond for the UV light on the photopolymer resin curing process is discussed. Based on the above, a kind of diamond tool—dicing blade is selected to analyze the curing process of photopolymer bond diamond tools. An analytical model of curing process is developed and a correlation curve between the depth of polymerization of the photopolymer resin diamond tools and the exposure time to represent the curing process of photopolymer bond dicing blade. A test is done to proof-test the validity of the analytical model and the correlation curve. The simulated data fit the experimental results, which demonstrates the analytical models and numerical algorithm are of high reliability. The analytical simulation method could possibly be used to optimize the curing cycle and improve the quality of the photopolymers resin bond diamond tools.     

Effects of prebuckling deformations on the elastic flexural-torsional buckling of laterally fixed arches

The effect of the prebuckling in-plane deformations on the elastic flexural-torsional buckling of laterally fixed circular arches is studied in this paper. The finite strains and the energy equation for the flexural-torsional buckling of arches have been derived based on an accurate orthogonal rotation matrix. A closed form solution for the elastic flexural-torsional buckling resistance of laterally fixed arches in uniform bending, including the effects of the prebuckling deformations, is obtained. It is found that the notion that the prebuckling deformations increase the flexural-torsional buckling moment of an arch or of a beam is not necessarily correct for a laterally fixed arch or beam in uniform bending, in deference to a laterally pinned arch. When a laterally fixed arch is subjected to positive uniform bending, the effects of the prebuckling deformations decrease the buckling moment, and the reduction of the buckling moment increases with an increase of the included angle and of the out-of-plane slenderness ratio of the arch. When a laterally fixed arch is subjected to negative uniform bending, the effects of the prebuckling deformations decrease the absolute value of its buckling moment when the included angle is very small, but increase the absolute value of the buckling moment when the included angle exceeds a certain value. The increase in the absolute value of the buckling moment increases with an increase of the included angle and of the out-of-plane slenderness ratio of the arch. When the ratio of the out-of-plane to the in-plane second moments of area of the cross-section is not small, both the reduction of the buckling moment of a laterally fixed arch in positive uniform bending and the increase of the buckling moment of a laterally fixed arch in negative uniform bending, are substantial.     

Research on key techniques of expendable conductivity temperature depth measuring system

This paper analysis the developing of expendable conductivity temperature depth measuring system(XCTD)and introduce its principle of measuring about temperature,salinity and depth of ocean.Some key techniques are put forward.According to the real needs of XCTD,conductivity sensor with high sensitivity is designed by principle of electromagnetic induce,the ocean conductivity from induced electromotive force has been calculated.Adding temperature correction circuit would help to reduce error of conductivity measurement because of sharply changing temperature.Advanced temperature measuring circuit of high precision and the constant current source is used to weaken effect of self-heating of resistance and fluctuation of the source.On respect of remote data transmission,LVDS is a good choice for the purpose of guarantee the quality of data transmitted and the transmission distance is reaching to thousand meters in the seawater.Modular programming method is also brought into this research aimed at improve the stability,reliability and maintainability of the whole measuring system.In February,2015,the trials in South China Sea demonstrate that the developed XCTD realize effective measurement at a speed of 6 knots and detection depth at 800 m.The consistency coefficient of the acquired data is greater than 0.99 and the success rate of probe launching is above 90%.     

CHARACTERISTCS OF FLUID FILM IN OPTIMIZED SPIRAL GROOVE MECHANICAL SEAL

In order to investigate the sealing performance variation resulted from the thermal deformation of the end faces, the equations to calculate the fluid film pressure distribution, the bearing force and the leakage rate are derived, for the fluid film both in parallel gap and in wedgy gap. The geometrical parameters of the sealing members are optimized by means of heat transfer analysis and complex method. The analysis results indicate that the shallow spiral grooves can generate hydrodynamic pressure while the rotating ring rotates and the bearing force of the fluid film in spiral groove end faces is much larger than that in the flat end faces. The deformation increases the bearing force of the fluid film in flat end faces, but it decreases the hydrodynamic pressure of the fluid film in spiral groove end faces. The gap dimensions which determine the characteristics of the fluid film is obtained by coupling analysis of the frictional heat and the thermal deformation in consideration of the equilibrium condition of the bearing force and the closing force. For different gap dimensions, the relationship between the closing force and the leakage rate is also investigated, based on which the leakage rate can be controlled by adjusting the closing force.     

滚筒采煤机负载的波动性分析

为了寻求滚筒采煤机正常工作时自身产生振动与冲击的原因,经过对滚筒上截齿受到的截割阻力与牵引阻力以及该两力在采煤机的牵引方向和竖直方向分力进行分析,得知两分力大小与截齿的切削厚度和旋转角度位置有关;研究了滚筒上受到的瞬时力与平均力的计算方法,推导了综合旋转角度和切削厚度的载荷波动系数的计算公式,并对所建立的公式进行了仿真模拟。结果表明:截齿数目从偶数增加1变为奇数时,载荷的波动系数的值明显减小;截齿从奇数增加1变为偶数时,载荷的波动系数不一定减小;适量的增加滚筒上同一螺旋线上截齿的数目可以有效的减小载荷的波动系数;为了提高截齿的使用寿命和可靠性以及滚筒的稳定性,减小滚筒和整个采煤机的冲击性,同一螺旋线上一周内截齿的数目应该尽量选用奇数。     

DIAGNOSTICS OF FATIGUE CRACK IN ULTERIOR PLACES OF LARGER-SCALE OVERLOADED SUPPORTING SHAFT BASED ON TIME SERIES AND NEURAL NETWORKS

To improve the diagnosis accuracy and self-adaptability of fatigue crack in ulterior place of the supporting shaft, time series and neural network are attempted to be applied in research on diag-nosing the fatigue crack’s degree based on analyzing the vibration characteristics of the supporting shaft. By analyzing the characteristic parameter which is easy to be detected from the supporting shaft’s exterior, the time series model parameter which is hypersensitive to the situation of fatigue crack in ulterior place of the supporting shaft is the target input of neural network, and the fatigue crack’s degree value of supporting shaft is the output. The BP network model can be built and net-work can be trained after the structural parameters of network are selected. Furthermore, choosing the other two different group data can test the network. The test result will verify the validity of the BP network model. The result of experiment shows that the method of time series and neural network are effective to diagnose the occurrence and the development of the fatigue crack’s degree in ulterior place of the supporting shaft.     

INFLUENCE OF ROLL DIAMETERS ON DEFORMATION BEHAVIOUR OF HIGH TEMPERATURE SUPERCONDUCTING TAPE

During plastic process,the material flow is strongly influenced by the contact area between deformed workpiece and die.In rolling process,difference of roll diameter makes the contact area between roll and deformed tape different,which leads to different material flow and the distribution of powder density.A numerical modelling of the first rolling process for 61-filament high temperature superconducting tape is constructed and the influences of roll diameters on deformation behavior of the tape are discussed.It can be found that the BiSrCaCuO(BSCCO)powder in the center of the tape has higher relative density than those in the periphery of the tape during rolling process.With the increase of roll diameter,the length of the contact arc in the roll gap expands which lead to the in- creasing of transversal strain and the decreasing of the related longitudinal strain.It makes the value of longitudinal strain ratio decrease gradually,which decreases the possibility of occurrence of the transversal shear band,simultaneously it increases the risk of occurrence of longitudinal crack.     

浅议机械论世界观主导地位之确立

占现代人类主导思想地位的机械论世界观,它的统治地位的确立是一个循序渐进的过程,先后经历了机械论大门的开启者培根,机械论世界观的架构者笛卡尔,机械论世界观主导地位确立和宣扬者牛顿,以及机械论世界观的社会意识形态补充者洛克,机械论世界观的经济意识形态的确立者斯密,再加上机械论世界观进步思想的巩固者达尔文等在各自不同领域的不懈探索和大力倡导,再加上其它意识形态领域潜移默化地影响而逐步得以确立。     

EFFECTS OF LEAD WIDTHS AND PITCHES ON RELIABILITY OF QUAD FLAT PACKAGE （QFP）SOLDERED JOINTS

The finite element method(FEM)is used to analyze the effects of lead widths and pitches on reliability of soldered joints.The optimum simulation for QFP devices is also researched.The results indicate that when the lead pitches are the same,the maximum equivalent stress of the soldered joints increases with the increasing of lead widths,while the reliability of the soldered joints reduces. When the lead widths are the same,the maximum equivalent stress of the soldered joints doesn't decrease completely with the increasing of lead pitches,a minimum value of the maximum equivalent stress values exists in all the curves.Under this condition the maximum equivalent stress of the sol- dered joints is relatively the least,the reliability of soldered joints is high and the assembly is excel- lent.The simulating results indicate the best parameter:The lead width is 0.2 mm and lead pitch is 0.3 mm(the distance between two leads is 0.1 mm),which are benefited for the micromation of QFP devices now.The minimum value of the maximum equivalent stress of soldered joints exists while lead width is 0.25 mm and lead pitch is 0.35 mm(the distance between two leads is 0.1mm),the devices can serve for a long time and the reliability is the highest,the assembly is excellent.The simulating results also indicate the fact that the lead width is 0.15 mm and lead pitch is 0.2 mm maybe the limit of QFP,which is significant for the high lead count and micromation of assembly.     

ANGULAR DISTORTION ALLOWABLE VALUE AND ASSESS METHOD OF WELD ON COKE TOWER

A graph as the new engineering method for estimate the safety of bulging deformation of coke tower is proposed. Through stresses analysis of circumferential weld of coke tower and comparing the stresses produced by pressure with heat stress of steady state, residual stress, bending stress produced by both itself weight and wind loads, it showed that the stresses produced by pressure on the angle distortion are the main factor of equivalent stress of the combined stress. After comparing four kinds of stress controlling conditions, the relation to stress with depth of angular distortion, grade of curvature of angular distortion and half of region of angular distortion has been inferred. Graph of deformation allowable value of coke tower for different condition by angular distortion and half of region of angular distortion has been plotted. The five steps for its engineering use have been explained. The lighter the grade of curvature is, the larger of bulge allowance, may be, and the bigger of depth of angular distortion may pose too. For the coke tower with a popular structure of Dg 5 400 mm×28 mm, the result by graph is nearly more than the result of two formulas formed by other research, the error is less than 7.0%. But, the graph can be easily applied to different size of angular distortion.