践行科学发展观是实现企业良性发展的根本

在瞬息万变的当今社会，只有始终保持清醒的头脑，以科学发展观作为指导企业发展的动力，才能管理好企业，振兴和发展企业，科学规划企业的未来，才能牢牢把握住企业的发展方向，让企业每一名员工都有自己的职业发展方向，对未来充满希望。用科学的发展观武装头脑，重要的是勤于学习，勇于实践，密切联系群众，这是我们不断增强贯彻落实科学发展观的自觉性和坚定性的唯一途径。     

文化引领发展——河南豫光金铅集团公司企业文化建设探寻

都说人有魅力。其实，企业和人一样同样具有魅力，企业文化更是如此。他能吸引投资者，更能吸引合作者，从而促使企业更好的发展。     

打造焊接业“品牌驱动型”成长模式

在全球经济形势低迷，国内经济增长速度放缓的大背景下，我国焊接企业如何制定正确的企业经营战略，采取有效的措施，应对发展瓶颈，适应目前市场环境的变化，进一步提升企业发展潜力，是焊接企业经营者十分关注的问题。在此，推荐两篇介绍企业品牌发展战略的短文，供焊接企业经营者借鉴。希望焊接行业的有识人士，借此论坛平台，发表自己的真知灼见，共同促进我国焊接企业的健康发展。     

企业管理者要有“三只眼”

要办好企业，作为企业管理层，从产品开发、企业管理、市场营销到上下交往，样样都得管。不过，这些事儿忙起来还可以让别人分担些，但企业的生存环境和发展方向都必须亲自把握，不可有丝毫的糊涂。具体说，企业老板必须要有三只眼。     

集成化管理有助于提高国内模具企业管理水平

当前，我国模具企业管理水平整体处于落后水平，探索新的管理方式已经成为我国模具企业的首要任务。相关资料显示，在我国众多模具企业中，大部分是民营企业。一些民营模具企业近几年来发展迅速，企业不断做大做强，具有一定规模，是模具行业中一支不可忽视的力量。然而，仍有不少民营模具企业是家族型企业，其管理理念淡薄、滞后，基本上还停留在作坊式、粗放式管理模式上，忽视管理或光管不理，这就难免会使模具企业发展滞后。     

论企业发展的关键在于人才

人才对于企业发展至关重要，人才问题是关系一个国家，一个企业强弱兴衰的重大问题。人才是世界所有宝贵的资源中最宝贵，最有决定意义的资源，任何一个企业，只要有了人才，任何效益、设备、技术都可以创造出来，在市场经济建设中，必然需具有较高综合素质的各类人才，企业才能立于不败之地。     

企业并购重组的基本模式

企业成长有两条基本途径，一是立足产品经营、内部积累滚动发展的内生型途径，二是借助并购重组的外部交易型途径。产品经营是企业发展的根本，并购重组是企业在产品经营循环渐进发展基础上的爆发和突破。产品经营发展到一定程度，就需要借助并购重组，通过外部资源的交换和整合实现企业的飞跃发展。     

探索模具企业管理与体制改革“新方向 ”

2013年4月27日，针对目前中国模具企业所存在的普遍问题，国内首次以探索模具企业管理与体制改革方向的专业性研讨沙龙——“模具企业转型升级和创新发展战略研讨沙龙”在深圳市召开。深圳市作为华南地区乃至我国重要的模具企业生产聚集地．有各类模具企业上千家，其中年产值过亿元的模具企业就有近百家。     

海亮最需要什么样的人？

自1989年创办至今，海亮已走过19个春秋。19年来，在全体海亮人的共同努力下，企业取得了快速健康发展，公司由单一的铜加工企业发展为以铜加工、房地产和矿山资源开发三大主体产业为支柱、以教育、煤炭、有色贸易和环保等产业为支流的国际化大型民营企业集团，综合实力位居中国企业500强第186位。企业能有今天的地位和灵活发展态势，依靠的是人才，     

海亮最需要什么样的人？

自1989年创办至今，海亮已走过19个春秋。19年来，在全体海亮人的共同努力下，企业取得了快速健康发展，公司由单一的铜加工企业发展为以铜加工、房地产和矿山资源开发三大主体产业为支柱、以教育、煤炭、有色贸易和环保等产业为支流的国际化大型民营企业集团，综合实力位居中国企业500强第186位。企业能有今天的地位和灵活发展态势，依靠的是人才，     

Effects of Post-weld Heat Treatment on Microstructure,Mechanical Properties and the Role of Weld Reinforcement in 2219 Aluminum Alloy TIG-Welded Joints

In as-welded state, each region of 2219 aluminum alloy TIG-welded joint shows diff erent microstructure and microhardness due to the diff erent welding heat cycles and the resulting evolution of second phases. After the post-weld heat treatment, both the amount and the size of the eutectic structure or θ phases decreased. Correspondingly, both the Cu content in α-Al matrix and the microhardness increased to a similar level in each region of the joint, and the tensile strength of the entire joint was greatly improved. Post-weld heat treatment played the role of solid solution strengthening and aging strengthening. After the post-weld heat treatment, the weld performance became similar to other regions, but weld reinforcements lost their reinforcing eff ect on the weld and their existence was more of an adverse eff ect. The joint without weld reinforcements after the post-weld heat treatment had the optimal tensile properties, and the specimens randomly crack in the weld zone.     

The First Phase of the SRIF Industrialized Base in ＂West Area＂ Has Been Put into Operation

After nearly two years＇ tense construction, the first phase of industrialized base of Shenyang Research Institute of Foundry （SRIF）, located at the Tiexi Casting and Forging Industrial Park in the west of Tiexi District, has now been completed and formally put into operation.     

Thermodynamics Study on the Decomposition of Chromite with KOH

Institute of Process Engineering, Chinese Academy of Sciences, China, has proposed a method for oxidative leaching of chromite with potassium hydroxide. Understanding the mechanism of chromite decomposition, especially in the potassium hydroxide fusion, is important for the optimization of the operating parameters of the oxidative leaching process. A traditional thermodynamic method is proposed and the thermal decomposition and the reaction decomposition during the oxidative leaching of chromite with KOH and oxygen is discussed, which suggests that chromite is mainly destroyed by reactions with KOH and oxygen. Meanwhile, equilibrium of the main reactions of the above process was calculated at different temperatures and oxygen partial pressures. The stable zones of productions, namely, K2CrO4 and Fe2O3, increase with the decrease of temperature, which indicates that higher temperature is not beneficial to thermodynamic reactions. In addition, a comparison of the general alkali methods is carried out, and it is concluded that the KOH leaching process is thermodynamically superior to the conventional chromate production process.     

Influence of Heat Treatment on Damping Behaviour of the Magnesium Wrought Alloy AZ61

The effect of isochronal heat treatments for 1h on variation of damping, hardness and microstructural change of the magnesium wrought alloy AZ61 was investigated. Damping and hardness behaviour could be attributed to the evolution of precipitation process. The influence of precipitation on damping behaviour was explained in the framework of the dislocation string model of Granato and Lücke.     

Effect of Rare Earth Doping on Impedance,Modulus and Conductivity Properties of Multiferroic Composites:0.5(BiLa_xFe_(1-x)O_3)–0.5(PbTiO_3)

The Lanthanum-doped bismuth ferrite–lead titanate compositions of 0.5(Bi LaxFe1-xO3)–0.5(Pb Ti O3)(x = 0.05,0.10,0.15,0.20)(BLxF1-x-PT) were prepared by mixed oxide method.Structural characterization was performed by X-ray diffraction and shows a tetragonal structure at room temperature.The lattice parameter c/a ratio decreases with increasing of La(x = 0.05–0.20) concentration of the composites.The effect of charge carrier/ion hopping mechanism,conductivity,relaxation process and impedance parameters was studied using an impedance analyzer in a wide frequency range(102–106Hz) at different temperatures.The nature of Nyquist plot confirms the presence of bulk effects only,and non-Debye type of relaxation processes occurs in the composites.The electrical modulus exhibits an important role of the hopping mechanism in the electrical transport process of the materials.The ac conductivity and dc conductivity of the materials were studied,and the activation energy found to be 0.81,0.77,0.76 and 0.74 e V for all compositions of x = 0.05–0.20 at different temperatures(200–300 °C).     

Using Finite Element and Contour Method to Evaluate Residual Stress in Thick Ti-6Al-4V Alloy Welded by Electron Beam Welding

This work was to reveal the residual stress profile in electron beam welded Ti-6Al-4V alloy plates(50 mm thick) by using finite element and contour measurement methods.A three-dimensional finite element model of 50-mmthick titanium component was proposed,in which a column–cone combined heat source model was used to simulate the temperature field and a thermo-elastic–plastic model to analyze residual stress in a weld joint based on ABAQUS software.Considering the uncertainty of welding simulation,the computation was calibrated by experimental data of contour measurement method.Both test and simulated results show that residual stresses on the surface and inside the weld zone are significantly different and present a narrow and large gradient feature in the weld joint.The peak tensile stress exceeds the yield strength of base materials inside weld,which are distinctly different from residual stress of the thin Ti-6Al-4V alloy plates presented in references before.     

Microstructures and Tensile Properties of Ultrafine-Grained Ni–(1–3.5) wt% SiC_(NP) Composites Prepared by a Powder Metallurgy Route

Silicon carbide nanoparticle-reinforced nickel-based composites(Ni–Si CNP),with a Si CNPcontent ranged from1 to 3.5 wt%,were prepared using mechanical alloying and spark plasma sintering.In addition,unreinforced pure nickel samples were also prepared for comparative purposes.To characterize the microstructural properties of both the unreinforced pure nickel and the Ni–Si CNPcomposites transmission electron microscopy(TEM) was used,while their mechanical behavior was investigated using the Vickers pyramid method for hardness measurements and a universal tensile testing machine for tensile tests.TEM results showed an array of dislocation lines decorated in the sintered pure nickel sample,whereas,for the Ni–Si CNPcomposites,the presence of nano-dispersed Si CNPand twinning crystals was observed.These homogeneously distributed Si CNPwere found located either within the matrix,between twins or on grain boundaries.For the Ni–Si CNPcomposites,coerced coarsening of the Si CNPassembly occurred with increasing Si CNPcontent.Furthermore,the grain sizes of the Ni–Si CNPcomposites were much finer than that of the unreinforced pure nickel,which was considered to be due to the composite ball milling process.In all cases,the Ni–Si CNPcomposites showed higher strengths and hardness values than the unreinforced pure nickel,likely due to a combination of dispersion strengthening(Orowan effects) and particle strengthening(Hall–Petch effects).For the Ni–Si CNPcomposites,the strength increased initially and then decreased as a function of Si CNPcontent,whereas their elongation percentages decreased linearly.Compared to all materials tested,the Ni–Si CNPcomposite containing 1.5% Si C was found more superior considering both their strength and plastic properties.     

Directional Growth of Tin Crystals Controlled by Combined Solute Concentration Gradient Field and Static Magnetic Field

A new method was introduced to achieve directional growth of Sn crystals. Microstructures in liquid(Pb)/liquid(Sn) diffusion couples were investigated under various static magnetic fields. Results show that the β-Sn crystals mainly reveal an irregular dendritic morphology without or with a relatively low static magnetic field(B0.3 T). When the magnetic field is increased to 0.5 T, the β-Sn dendrites close to the final stage of growth begin to show some directional character. With a further increase in the magnetic field to a higher level(0.8–5 T), the β-Sn dendrites have an enhanced directional growth character, but the dendrites show a certain deflection. As the magnetic field is increased to 12 T, the directional growth of the β-Sn dendrites in the center of the couple is severely destroyed. The mechanism of the directional growth of the β-Sn crystals and the deflection of the β-Sn crystals with the application of static magnetic field was tentatively discussed.     

Growth Kinetics of Single Inclusion Particle in Molten Melts

On the basis of the single-particle framework, a new theory on inclusion growth in metallurgical melts is developed to study the kinetics of inclusion growth on account of reaction and collision. The studies show that the early growth of inclusion depends on reaction growth and Brawnian motion collision, and where the former is decisive, the late growth depends on turbulence collision and Stokes＇ collision, and where the former is dominant; collision growth is very quick during the smelting process, lessened in the refining process, but nearly negligible in the continuous casting process.     

Theoretical Analysis for the Motion and Temperature of Melt Droplets in Spray Degassing Process

The motion of melt droplets in spray degassing process was analyzed theoretically. The height of the treatment tank in spray degassing process could be determined by the results of theoretical calculation of motion of melt droplets. To know whether the melt droplets would solidify during spraying process, the balance temperature of melt droplets was also theoretically analyzed. Then proof experiments for theoretical results about temperature of melt droplets were carried. In comparison, the experimental results were nearly similar to the calculation results.