高强高导CrZrCu合金结晶器的研制

介绍了结晶器新材质高强高导CrZrCu合金的成份和性能,论述了一重集团公司在熔炼技术和离心浇注方面所取得的重大工艺进展,为宝钢和济钢生产的大型板坯连铸机结晶器钢板,达到和超过了日本CCM-B标准。     

高强高导CrZrCu合金结晶器的研制

介绍了结晶器新材质高强高导CrZrCu合金的成份和性能,论述了一重集团公司在熔炼技术和离心浇注方面所取得的重大工艺进展,为宝钢和济钢生产的大型板坯连铸机结晶器铜板,达到和超过了日本CCM-B标准.     

结晶器正弦振动的一种结构

在结晶器（水冷金属型）的一端连续浇入金属液，金属在结晶器型腔内连续向另一端移动和凝固成型，在结晶器另一端连续拉出铸件，这种方法称为铸造法。在铸造过程中，结晶器振动的目的在于改善铸锭的表面质量。而振动可以分为很多种形式，本文分析了几种常见的结晶器振动形式，并提供了一种便于实现结晶器正弦振动的结构。     

具有优良传导性与强、硬度的系列铜合金的研制及应用

介绍了在研制传导性与强、硬度综合性能优良的铜合金方面的系列成果 ,并结合生产实际 ,开发了多种接触焊电极、连续铸造结晶器内套、大型汽车发电机转子槽楔、大中型导电结构件等几十种产品 ,均成功取代进口 ,节省了大量外汇 ,经济效益可观。     

铬锆钢结晶器铜板合金的熔炼及离心铸造

就铬锆铜合金的熔炼及结晶器铜板的离心铸造进行了试生产。本文根据试生产的结果说明了铬锆铜合金的熔炼特点,并着重论述了铬锆铜合金的铸件的离心铸中铸件转数和重力系数对铸件质量的影响,制定了切实可行的熔炼工艺,确定了可靠的离心铸造工艺参数,生产出合格的产品。     

连铸机结晶器的改进研究

介绍了连铸机结晶器的改进方案，并阐述了结晶器振动的改进原理。     

板坯连铸机直形结晶器铜板设计

对直形结晶器和弧形结晶器进行比较，重点介绍直形结晶器铜板材质选择、参数确定以及冷却水槽的设计原则。     

钢水液面控制系统的应用

钢水液面计用于板坯连铸生产中，可快速准确地检测连铸生产过程结晶器内钢水的高度，在一定的连铸速度范围内，能保证结晶器内钢水液位不变。连铸结晶器钢水液面控制系统运行的应用，实现了生产过程自动化，提高了产品质量，达到节约能源、提高生产效率的目的。     

结晶器足辊的堆焊在连铸机上的应用

结晶器足辊在使用中受到很大的应力作用，通过对结晶器足辊采用药芯焊丝D226 HJ260焊剂堆焊，使其硬度和耐磨性有了显著提高，使用寿命延长了近两倍。     

Al-Sn合金铸锭铸造工艺研究

高锡铝合金超薄锭连续铸造,采用间接水冷、新型结晶器,合理的铸造工艺参数,不但消除了铸造裂纹,而且生产出了晶粒细小、无疏松、夹渣、气孔等缺陷的合格新产品.找出了高锡铝锡合金超薄扁锭连续铸造的一般规律,设计制造出适合其连铸的结晶器和冷却系统,掌握了从配料、熔炼到铸造的生产工艺,生产出了质量好、机械性能合格的产品,为企业创造了良好的经济效益.     

高温高压模拟井筒的设计

根据教育部"石油天然气装备"重点实验室的建设要求,设计了能模拟3000 m井下工况的高温高压模拟井筒.该装置通过泵和电加热器循环加热井筒内的液压油.使其基本达到预期温度;用加压泵循环加压至设定压力,再由循环泵和盘管保持设定温度,实现井下温度和压力环境.根据设计条件采用第三强度理论确定模拟井筒的壁厚,进而确定井筒的结构方案;同时进行了系统热平衡计算,根据循环装置的设计使用要求选定了电加热器的功率.     

高效高精度圆材送料器的设计

为了更好地满足圆材校直切断机、高速切断机等设备的使用需求,经过多次设计、试验,采用斜楔式送料夹紧方案设计开发了一种新型的圆材送料器.使用结果表明该送料器不但提高了以往圆材送料机构的送料频率和送料定位精度,还使产品的形状精度得到改善.介绍了该送料器的结构和工作原理,详细描述了其夹紧送料机构和调整机构的设计.     

Energy dissipation of materials at high pressure and high temperature

We report an experimental method to study the anelastic properties of materials at high pressure and high temperature. The multianvil high pressure deformation device, used to apply a cyclic loading force onto the sample, can reach 15 GPa and 2000 K. A synchrotron x-ray radiation source provides time resolved images of the sample and reference material. The images yield stress and strain as a function of time; stresses are derived from the reference material, and strains from the sample. This method has been tested by applying a sinusoidal stress at megahertz to hertz frequency on a San Carlos olivine specimen at 5 GPa and up to 2000 K. Strain as small as 10(-5) can be resolved. We have obtained experimental results which exhibit resolvable attenuation factor (Q(-1)) and shear modulus (M) at deep Earth conditions. These results are in quantitative agreement with previously reported lower pressure data and suggest that temperature and grain size have dominating effect on these properties.     

采用高速高精度磨削的优点

分析高速高精度磨削工艺,提出其可以提高工件表面质量和加工精度及磨削效率,且操作简便,成本低.     

Development of a high resolution and high dispersion Thomson parabola

Here, we report on the development of a novel high resolution and high dispersion Thomson parabola for simultaneously resolving protons and low-Z ions of more than 100 MeV/nucleon necessary to explore novel laser ion acceleration schemes. High electric and magnetic fields enable energy resolutions of ΔE∕E < 5% at 100 MeV/nucleon and impede premature merging of different ion species at low energies on the detector plane. First results from laser driven ion acceleration experiments performed at the Trident Laser Facility demonstrate high resolution and superior species and charge state separation of this novel Thomson parabola for ion energies of more than 30 MeV/nucleon.     

高强度高刚度钢带缠绕预应力模具

基于精密冷锻和人造金刚石合成等高负载条件下材料加工工艺对模具强度、刚度提出的高要求,深入分析了传统年轮式预应力模具的结构与存在的问题,介绍了钢带缠绕预应力模具的特点与技术优势,阐述了钢带缠绕预应力模具设计的基本原理与方法,研制了钢带缠绕预应力模具制造专用设备,提出了缠绕张力的产生原理与控制方案.     

Thermoelastic effects in brushes with high current and high sliding speeds

Experimental results in the literature indicate that electric brushes may deform thermally, leading to point contact with the slip ring at high current levels. The present work provides theoretical support for these observations and a quantitative statement showing how operating variables influence this behavior. The analysis is restricted to a two-dimensional model of the brush with isotropic and constant material properties. The most unexpected result is that for steady current flow cooling of the exterior of the brush increases the tendency to deform unfavorably.     

A fully stabilized Brillouin spectrometer with high contrast and high resolution

Using a triple-pass plane and a confocal Fabry-Pérot interferometers in tandem, we have constructed a Brillouin spectrometer with a frequency resolution of 10(8) and a contrast of more than 10(10). Our system is controlled and fully stabilized by a desktop calculator, allowing efficient data collection for very long integration times.