PLC在铝型材氧化着色生产线上的应用

本文介绍了日本进口铝型材氧化着色生产线中,ＰＬＣ对行车实现全自动控制的系统构成和编程特点     

PLC在铝型材氧化着色生产玫上的应用

本文介绍了日本进口铝型材氧化着色生产线中，ＰＬＣ对行车实现全自动控制的系统构成和编程特点。     

铝型材阳极氧化处理过程的金属损失测定

通过对铝型材阳极氧化处理各主要生产工序的金属损失测定,估算了各系列型材阳极氧化处理过程的金属损失,为车间进行金属平衡,寻求降低金属损失的途径,提供了参考数据。     

1650UST铝型材挤压机液压系统存在的问题及其改造

针对某铝型材公司1650UST铝型材挤压机液压系统存在的几个问题．提出几点改进方案。该改造方案在此铝型材公司已投入运行．效果良好。     

山东新建两条铝型材生产线

山东黄县新建成的沈飞南山铝制品联合有限公司,该公司的铝型材生产线包括熔铸、挤压、模具、氧化及门窗车间,年产铝型材6000吨。     

爱励铝业天津公司高强度汽车铝型材扩能

<正>爱励铝业天津公司高强度汽车铝型材挤压生产车间技改扩建项目日前顺利通过竣工验收。该项目预计今年内,将新增高强度汽车铝型材5400t。美国爱励铝业天津公司拥有从意大利引进的55MN全液压控制挤压机,可生产长度30m、最大宽度540mm的大型铝型材,并将产品成功打入轨道交通列车车体用铝型材和汽车铝型材市场,使其高端、高附加值产品占到企     

大型铝材氧化、电泳车间的玻璃钢防腐蚀设计及施工

总结了铝型材加工企业的氧化、电泳车间玻璃钢防腐蚀工程的方案设计、材料选择、施工工艺技术方法等经验.     

铝型材加工厂含铬废水治理

铝型材加工工厂喷涂车间排出的废水中，由于含有国家《污水综合排放标准)(GB8978—1996)中从严控制的一类污染物质——重金属离子铬，对水体造成的污染极大，必须单独处理。本文结合实际废水处理工程．提出了流程简洁的处理工艺，并就其工艺要点进行了总结。     

工业硅全自动精炼系统的工艺研发及应用

介绍了全自动精炼系统在钢铁行业属于成熟的技术,而在工业硅精炼方面还没有应用。文章论述了工业硅全自动精炼系统的工业研发及应用,此系统具有良好的经济效益、社会效益和前景,对于促进铁合金行业的发展和进步具有重大意义。     

铁精矿智能全自动制样系统研发

近几年,国内研发了一些较易实现智能化全自动制样的动力煤智能化全自动制样系统,但成熟的铁矿石类智能化全自动制样系统还是空白。国内冶金行业迫切需要符合国家制样标准的铁矿石智能全自动制样系统。2017年,酒钢集团宏兴股份公司储运部经过近一年的研究与大量实验,与中冶南方工程技术有限公司、徐州赛摩电气股份有限公司相互配合,对铁精矿智能全自动制样系统进行了可行性探索研究和试验,取得了成功。     

挤压分流模CAD关键技术的研究

基于Active X 技术，运用VBA，对复杂铝型材挤压分流模CAD的关键技术进行了研究。系统分解为挤压模工艺参数和模具结构设计二大模块，利用区域法自动查找型材质心和最大外接圆直径。提出了最短工作带位置的自动寻找方法和工作带的CAD计算公式。采用交互式设计，模块化程度高，易于维护和扩充。     

多腔室模具加热曲线及控制

挤压模具的加热温度对铝型材的质量及产量、挤压机的运行等影响很大,因此对模具的温度控制要求很高。本文将分析其加热曲线及控制原理。     

Influence of extrusion ratio and temperature on microstructure and mechanical properties of 2024 aluminium alloy consolidated from nanocrystalline alloy powders via hot hydrostatic extrusion

Abstract

Nanocrystalline 2024 aluminium alloy powders with an average grain size less than 50 nm, prepared by a unique technique which combines rapid solidification and mechanical milling, were consolidated into bulk material under various technical conditions via hot hydrostatic extrusion and the microstructure and mechanical properties of the consolidated alloy were experimentally investigated. The influence of the two main technical parameters, extrusion ratio and temperature, on the microstructure and mechanical properties of the as extruded alloy is made clear and the reasons why these two parameters had such an influence on the microstructure and mechanical properties of the alloy are also discussed. Furthermore, suggestions are given for rationalising the extrusion ratio and temperature for the consolidation of the nanocry stalline 2024 aluminium alloy powders via hot hydro static extrusion.     

160 kA铝电解槽生产实践的探讨

结合现代铝电解生产工艺理论,论述中铝青海分公司160kA铝电解槽技术条件的选择,并论述了铝电解生产中的操作与维护。     

DISPERSION-STRENGTHENED ALUMINIUM PRODUCTS MANUFACTURED BY POWDER BLENDING

Abstract

The microstructure of dispersion-strengthened aluminium products manufactured by powder blending has been examined by optical and transmission electron microscopy, and the mechanical properties have been determined at room temperature and at elevated temperatures by tensile- and creep-testing.

Powder variables, such as the size of the aluminium-powder particles and the size, volume concentration, and type of oxide (Al₂O₃, SiO₂, ZrO₂) used as the dispersed phase, have been investigated, together with manufacturing variables, such as temperature of the extrusion billet, reduction ratio in extrusion, and heat-treatment after extrusion. Major variables are the size of the aluminium particles and the oxide concentration, and generally it has been found that the strength increases and the elongation decreases for decreasing size of aluminium particles and increasing oxide concentration. The elongation measured after extended creep-testing is, however, practically the same for all products, of the order of 1-3%.

A subgrain structure is formed in the aluminium matrix during manufacturing. Subgrain-boundary-strengthening, which is effective at room temperature, is superimposed on oxide-strengthening; at elevated temperatures, oxide-strengthening only is of importance.

A model has been proposed that relates the flow stress (0.2% offset) to the size of aluminium particles and the oxide concentration, and good agreement with the experimental data has been found.     

论预变形铝挤压模具设计

采用常规的模具设计方法，模具上机合格率不高。本文提出预变形模具设计方法，它把模孔形状预先设计成与型材挤压时变形相反的方向，从而获得合格的挤压型材。提高模具的上机合格率。     

Mechanical Properties of Aluminium-Graphene Composite Synthesized by Powder Metallurgy and Hot Extrusion

The present work focuses on the development of multilayer graphene reinforced aluminium metal matrix composites by powder metallurgy followed by hot extrusion. Microstructure, grain size analysis and mechanical properties of hot extruded unreinforced aluminium and graphene reinforced aluminium composites are presented here. Microstructure shows uniform distribution of graphene throughout the matrix. Experimental results reveal significant increase in hardness as well as tensile strength of composite as compared to unreinforced aluminium. The improvements in properties are attributed to uniformly dispersed graphene sheets, an excellent interfacial bonding between graphene and aluminium matrix and grain refinement caused by the addition of graphene. Further, the strengthening mechanisms involved in the aluminum-graphene composite have been discussed. The fracture studies show the transition of ductile fracture in case of pure aluminium to brittle fracture in case of aluminium-graphene composites.     

THE EXTRUSION OF ATOMIZED ALUMINIUM POWDERS

Abstract

More than a hundred experiments have been performed to investigate the extrusion mechanism involved and the effect of process variables on the structure, substructure, and mechanical properties of the extrude when processing atomized aluminium powder of varying mesh size. It is demonstrated that extrusion pressure is largely independent of the final properties and that the ductility of the extrude may be controlled by the process variables. A mechanism that agrees with experimental observations is suggested to explain the extrusion mechanics. Transmission and scanning electron microscopy results also support the theses presented.     

cimplicity组态软件和slc5/04plc在铝电解烟气净化监控系统的组合应用

通过CIMPLICITY HMI以其强大的数据处理以及组态配置功能和罗克韦尔公司SLC5/04系列PLC的完美结合,解决了铝电解烟气净化系统各个参数的检测、显示、存储和报警要求,并实现了现场设备的遥控操作和整个工艺流程的完美动态再现.     

2024合金高精度拉制棒材工艺研究

对2024合金拉制棒材形变热处理制度进行试验研究。确定了工艺参数,生产出尺寸和力学性能达到ASTM标准的冷拉棒材。