钢管星轮拨料装置的研制

主要简述了星轮拔料设备与现有翻料设备在钢管生产线上使用的比较，介绍了星轮拔料装置的设计原理及其在高速、快节奏的钢管生产线的精整区中使用的优越性。     

带有翻料装置的回转窑内衬结构的数值模拟

炭素回转窑内物料料层过厚,则物料煅烧不透．为解决此问题可在回转窑内衬增设翻料装置,即将原来的平滑窑内衬改为带有导流槽的凸凹内衬．为研究该内衬结构对窑内热工状况的影响,应用计算流体力学软件Fluent对窑内流场、温度场、浓度场等作了耦合计算．结果表明,翻料装置结构的不同对窑内流场、温度场、浓度场的影响不同;合理翻料装置的安装,可以加速挥发分的燃烧,提高窑内温度,以达到解决料层过厚导致物料煅烧不透的问题又不增大炭质烧损的目的．     

液压钢包倾翻装置的结构分析与控制

针对恶劣工况及作业要求对液压倾翻装置的结构、动作、控制进行了全面详细的探究,对典型液压倾翻装置在实际使用过程中的优缺点进行了深入分析。设计了一种钢包倾翻装置和液压控制系统,解决了倾翻机的卡阻问题,提高了倾翻装置的稳定性、承载能力和适用范围。通过计算和设计优化,解决了系统的发热问题,采用多级保护提升了倾翻控制的安全性能,实现了倾翻装置的稳定和精确控制,降低了设备的使用故障。     

150t钢水罐倾翻装置优化方案设计及实施

在实施新上150 t钢水罐倾翻装置过程中,现场调试发现该设备倾翻力矩远大于原设计电机额定驱动力矩。通过对倾翻装置设计的倾翻力矩进行了校核,分析倾翻装置的结构特点,采用了调整钢水罐在倾翻框架的定位高度,来平衡减小回转载荷力矩的方案。抬高方案实施过程中,通过精确定位和加强焊接质量控制保证了改造施工的质量。从优化后倾翻装置倾翻力矩调试结果数据来看,该优化设计方案实现了倾翻装置的稳定、安全生产要求。     

冶金铸造起重机翻罐钩的设计研究

鞍钢新钢铁第二炼钢厂现有冶金铸造起重机30台，每天完成各类翻罐作业。这些翻罐作业的完成依赖于翻罐钩，因此翻罐钩的设计是否合理，功能是否完善显得至关重要。以连铸280t吊车为例，简要介绍翻罐钩的设计及研究。     

DG200管状带式输送机的优化与改造

介绍紫金铜业熔炼厂管状带式输送机的使用情况,分析目前存在现状,通过对管状带式输送机操作方式优化、机械结构改进（包括头部驱动装置调整、头部驱动滚筒改造、中间段成管及展开段托辊重新选型、尾部受料装置改造等）,降低设备维护成本,解决导致管状带式输送机停机的问题,提高设备稳定性。     

推床翻钢机安全装置的改革

我厂750初轧机在轧制过程中,对钢锭的移送、翻转等都是由单侧齿条双电机拖动的推床和用差动装置传动的曲柄齿条式的钩式翻钢机来完成。 一、几种误操作 由于操作不当或电控失灵,推床和翻钢机以及轧机在操作时间上的配合失误,导致     

一种大型钢坯翻转装置介绍

大棒翻钢装置在开坯机组中是一个非常重要的工艺设备,针对翻钢设备存在的主要问题进行改进,介绍了改进后大棒翻钢装置的结构、工作原理、特点及主要性能参数.     

本钢连续退火机组过渡料焊接调试

主要介绍了过渡料在本钢冷轧硅钢连退机组中的应用。当机组出现设备故障需要停机处理时或者生产过程监控过程中发现质量问题时或在变换规格情况下进行涂层机更换时,过渡料显得尤为重要。过渡料组成主要为上道工序产生的轧制废品与普碳钢DC01,过渡料相对硅钢料来说成本较低,在实际应用中获得了较好效果。     

提高渣罐脱翻率的试验研究

为提高渣罐的脱翻率,降低渣罐运行费用,从渣罐台车结构、翻渣设备以及喷涂料三方面进行优化。试验结果表明:采用直径为100mm半球型限位器后,渣罐卡帮数量下降80%;采用回转台轨道延伸的方法,调整轨道限位装置以取消工况转换控制点,使回转范围在±30°时起重能力达到±20°工况的19.5吨,增加起吊重量以满足生产需求,二次处理渣罐数量下降近40%;喷涂料水灰最佳配比为9∶5,其中滑石粉与膨润土的混配比例为9∶5,日均未翻脱渣罐数量下降近30%。     

高速铁路用钢轨生产技术

采用铌稀土(BNbRE)钢种,进行了钢的高纯净度、无缺陷连铸坯、高精度轧制、在线检验及相关技术研究,形成高级别钢轨生产工艺.结果表明:生产的钢轨能够满足<时速200公里客运专线60 kg/m钢轨暂行技术条件>的技术指标.     

关于高职教育终身化理念的思考

为了发挥高职院校在终身教育、终身学习、学习化社会的建设中的积极作用.对终身教育及高职教育终身化的理念进行了论述,提出了高职教育终身化的原则和构建终身教育及终身学习的体系.     

Guidelines for clinical use of drugs for involutional osteoporosis

Guidelines for clinical use of drugs for involutional osteoporosis will be released soon in Japan. Seven different types of drugs for osteoporosis are in market for clinical use in Japan. Those includes calcium, estrogens, anabolic steroids, calcitonins, active vitamin D3, ipriflavon, and etidronate. The guidelines recommend to clarify the risk factors in each patient before to start administration of drug. Patients with osteopenia are basically recommended to be followed without any drug treatment, but, patients with osteoporosis are generally recommended to be treated with drug after evaluation of risk factors. After menopause, inhibitors of bone resorption would be recommended as a first choice drug. For monitoring effects of treatment, bone mass measurement is so far the first choice, but bone metabolic markers would be used as well.     

Criteria for selection of patients for emergency portacaval shunt

A computer program analysis of the effect on survival of 74 preoperative factors was performed as part of a prosepctive study of the emergency portacaval shunt in 146 unselected patients with bleeding esophageal varices due to alcoholic cirrhosis. Only ascites, a serum glutamic oxalacetic transaminase level of 100 units or more, and a requirement for 5,000 ml or more of blood transfusion were associated with a statistically significant decrease in survival. However, none of these factors are contraindications to operation because their presence permits a survival rate of 37 to 40%. The only contraindication to emergency portacaval shunt is the combined presence of ascites, jaundice, encephalopathy, and severe muscle wasting, a constellation that was incompatible with survival beyond one year.     

The use of dimethylsulfoxide for fixation of yeasts for electron microscopy

Increasing numbers of young women with ovarian failure and women of advanced reproductive age (> 40 yrs) utilize oocyte donation to treat their infertility. In both groups, women who become pregnant frequently experience multiple gestation, occurring in up to 30% of pregnancies. Advanced maternal age and high-order multiple gestations are associated with an increased risk for obstetric complications. We reviewed the pregnancies of patients with high-order multiple gestations (> or = 3 gestational sacs) with respect to their antepartum course and neonatal outcomes. Mothers were divided into two groups according to age at conception; Group I (> or = 40 yr, n = 20) and Group II (< 40 yr, n = 10). These 30 high-order multiple gestations were found among 127 successful oocyte donation cycles (23.6% of all pregnant patients). Data regarding pregnancy outcomes were gained by chart review and telephone interview. Results demonstrated spontaneous reductions in the number of implantation sites were similar between groups (Group I: 21.4% vs. Group II: 17.6%). Multifetal pregnancy reduction (MFPR) was more often chosen by older women (Group I: 45% vs. Group II: 10%; P < 0.05). Antenatal complications were commonly experienced by both groups (> 80%) as were operative deliveries (> 85%). However, neonatal outcomes were generally good, with only one death occurring in the 79 delivered infants (1.3%). We conclude transferring supernumerary embryos to women undergoing ovum donation places patients at great risk for high-order multiple gestations. These pregnancies are associated with increased antenatal and neonatal complications. Although advanced maternal age is normally an added risk factor, well-screened older patients carrying high-order multiple gestations experienced similar outcomes as younger mothers.     

介绍一种生产冲挤用铝合金坯料的新工艺

哈兹列特铝板带连铸连轧工艺已被成功地用于铝和铝合金冲击挤压用坯料的生产。在对哈氏四个有关用户扫描的基础上，列举了其产品及其用途，并介绍了相关工艺及其优点。     

重轨孔型设计软件的编制

随着计算机在轧钢领域的广泛应用，重轨孔型设计利用计算机技术是今后发展的必然趋势，结合鞍钢大型厂的实际情况，编制了重轨孔型设计软件，应用该软件后，明显地提高了设计工作效率，加快了新产品的开发速度。介绍了该软件的编制方法、系统的功能及程序结构。