炉前冲入废钢提高灰铸铁强度的方法初探

试验了通过冲天炉炉前铁水包中冲入少量废钢以及冲入废钢同时进行孕育处理提高灰铸铁强度的方法。结果发现：冲入３％废钢能明显提高灰铸铁的强度，且引起的化学成分变化不大；冲入废钢同时配以孕育处理可较大幅度提高灰铸件的强度。     

分级修切及浮动废料刀结构设计

介绍了一种新型的分级修切及浮动废料刀结构,该结构彻底消除了传统废料刀引起的二次剪切问题,有效杜绝了毛刺及铁屑的产生,同时保证废料顺利滑落,极大地提高了模具使用寿命,改善了制件表面质量。     

废杂铝预处理技术

废杂铝再生是21世纪铝工业生产发展中的一个热点。废杂铝种类多，对废杂铝的预处理是确保再生铝产品质量的关键。介绍了废杂铝的种类、分离技术与分类技术。     

废料上行力及其与板料强度性能的相关性

本文报告了对废料上行问题进行的基础性实验研究。取得了废料上行力最大值出现的位置、废料上行抑止力中最重要的力及废料上行力与板料强度性能密切相关性的新认识。     

废钢铁屑在炼铁工艺中的应用

阐述炼铁工艺应用废钢铁屑的原理和优点，通过实例介绍了废钢铁屑在烧结和高炉中的应用效果，对该项技术的应用作了展望。     

小型转炉降低钢铁料消耗的生产实践

钢铁料消耗包括转炉钢水消耗和连铸钢水消耗。通过采取降低转炉和连铸钢水消耗以及降低系统温度和中间包包龄攻关等措施来降低炼钢厂钢铁料消耗,取得明显的经济效益。     

可变切深、断屑式深孔加工

研究了深孔加工切屑形成机理及各种断、排屑方式。结果表明,程序控制、变切深进给的断排屑式深孔加工效果明显,加工精度也显著提高。     

Experimental Investigation of Low-Velocity Repeated Impacts on Glass Fiber Metal Composites

The aim of this study was to experimentally investigate the effect of repeated low-velocity impacts on tensile strength of fiber metal laminates (FMLs) using instrumented drop weight impact tester. FMLs were fabricated layer by layer intercalating three layers of aluminum 6061 and two layers of glass fiber-reinforced epoxy. The FMLs were subjected to repeated low-velocity impacts (<10?m/s) at the same location on the FML. The degradation of mechanical property due to impact(s) was studied using Zwick UTM at distances of 0, 20, 40, and 60?mm from the impact point. Results indicate that ultimate tensile strength, failure strain, and ductility of all specimens initially decrease, and then remain constant with increase in number of impacts. A closer examination of impacted FML by scanning electron microscope indicates that thinning and shear fracture in aluminum layers, as well as delamination, and fiber failure in composites plies were present.     

高镍铬铸铁轧辊辊身配料铁屑用量研究

通过对高镍铬无限冷硬复合铸铁轧辊外皮铁液配料时同成分铁屑用量分析比较，得出了合理的铁屑加入比例，通过成本对比，以及对生产出轧辊的缺陷和性能观察、测试，得出结论：存放两天以内的铁屑最高用量可达到35％，存放15天的铁屑最高用量可以达到30％，存放30天的铁屑最高用量可以达到25％。     

碎边剪切机的制造

该文介绍了碎边剪切机的结构与原理，以及碎边机装配后齿侧隙的调整及检测方法；并对剪切机主要零件齿轮、刀盘、刀轴、箱体的加工工艺进行了讨论及分析。     

The recycle of wrought aluminum alloys in Europe

Increasing demand for aluminum-based products and globalization of the aluminum industry have contributed significantly to the higher consumption of aluminum scrap for re-production of wrought aluminum alloys. The recycling of wrought auminum alloys not only fills market demand, but does so economically. It is a well-known fact that recycling wrought aluminum alloys from collected scrap consumes 15 times less energy than producing primary aluminum, and the cost of internal scrap is marginal. This paper examines opportunities for recycling scrap to solve the ongoing problem of raw material shortages for European producers of wrought aluminum alloys.     

镁合金废料再生技术现状及发展趋势

随着镁合金产品应用范围逐渐扩大,生产过程中产生的废料以及使用后报废的镁合金零件逐渐增多,镁废料回收及再生以及相关环保问题愈来愈受到人们的重视。本文介绍了镁合金废料的分类、再生技术的现状及发展趋势,并讨论了再生过程中的质量要求与检测手段。     

用钌废料制备三氯化钌及靶材用钌粉的工艺

计算机硬盘生产过程中产生大量的钌废料,是钌重要的二次资源,从这种废料中回收钌是十分必要的.提出了一种由这种钌废料制备试剂级三氯化钌或靶材用钌粉的工艺,回收率分别为95%、94%.     

快速鉴别废杂铝合金

废杂铝种类烦多，较实用的方法是将废杂铝分成纯铝、铝-硅、铝-镁、铝-铜、铝-锌合金等五大类，以提高其利用价值和经济价值。化学点滴法快速鉴别废杂铝，既经济又适用。     

Current Status of Titanium Recycling and Related Technologies

The major resource for recycling Ti is currently in-house Ti scrap generated in smelting and fabrication processes instead of postconsumer Ti products, and the actual recycling rate including cascade recycling in the smelting and fabrication industry is high. The major impurities in Ti scrap are O and Fe. High-grade Ti scrap with low O and Fe concentrations is remelted to obtain Ti and its alloys. On the other hand, low-grade Ti scrap with high O and Fe concentrations is used as ferrotitanium for the steel industry. However, if demand for Ti drastically increases, the amount of low-grade Ti scrap generated would exceed the demand for ferrotitanium. Before this happens, technologies for anti-contamination or for efficient O and Fe removal must be developed for efficient utilization of Ti. Herein, the current status of Ti scrap generation and its recycling flow are reviewed. New developments in Ti recycling technology are also discussed.

     

废钢破碎机发展情况综述

介绍了废钢破碎机的结构特点、工作原理和主要技术指标,论述了国内外废钢破碎机的发展情况。指出高效可靠的废钢破碎机具有很好的市场前景。     

镁合金废料的回收

在镁合金零部件生产过程中，特别是在压力铸造生产中，产生出来的废料以及使用后报废的镁合金零件逐渐增多。出于成本和环境因素的考虑，必须对这与日俱增的镁合金废料进行有效回收。本文以生产占90％的镁合金零部件压力铸造为主线，介绍镁合金废料回收的经济分析，镁合金废料的来源和分类、现行回收技术的现状及发展趋势。并介绍香港生产力促进局和重庆硕龙科技公司最近研究开发的一种新型镁合金废料现场精炼回收系统。     

An Industrial Method for Determining the Amount of Organics in Representative Samples of Aluminum Scrap

In recycling plants, especially those specializing in the recycling of low-grade aluminum scrap for wrought aluminum alloys, timely and accurate information about the amount of organics and other impurities in the incoming scrap is an important parameter in achieving both economic benefits and standard metallurgical quality of the recycled metal. To use aluminum scrap combined with organics as a source of aluminum for producing wrought aluminum alloys of standard quality, its metallurgical composition and the content of organic and other impurities should be quickly and cost-effectively analyzed on representative samples. In this work, an industrial thermogravimetric/differential thermal analysis of representative scrap samples was developed as an efficient analytical methodology for analyzing the humidity and organic impurities in incoming scrap. When performed in continuous mode, under a flowing atmosphere of argon with 1?wt.% of oxygen, this methodology enables a routine measurement of the humidity, the quantity of organics, and the carbon content in representative samples of incoming scrap in less than 15?min within an accuracy of ±0.5%.     

酸洗机组废边卷取机设计

为了适应钢铁市场的发展及需要,创造更大的经济效益,在酸洗机组圆盘剪之后增加废边卷取机。废边卷取对于提高废边利用率,降低废边处理成本有重要意义。本文主要论述了酸洗机组废边卷取机关键结构的设计,以及卷取驱动装置的核算,为该类设备的设计和改造提供参考。