铝合金挤压工模具技术的发展概况与趋势

简略地论述了工模具在铝合金挤压生产中的重要作用与特殊地位;介绍了铝挤压工模具技术的主要内容;着重分析了国内外挤压工模具设计制造水平及创新亮点。

铝合金厚板的性能、应用及市场

介绍了热轧铝合金厚板的成分与性能,着重阐述了铸造铝合金厚板的性能、生产、市场与应用。国外一些铝业公司研发出了一批具有优异性能的铸造厚板用铝合金,如美国铝业公司的 Mic-6合金、柯鲁斯铝业公司的 Giantal、Hokotol 合金,在国民经济的各个部门特别是工模具制造业(含铝锭铸造结晶器)与航空器制造业获得了日益广泛的应用。用铸造铝合金厚板制造塑料模具,与钢模具相比其成本至少低35%;用铝合金厚板制造的航空器与机器零件可取代大多数锻件。铝合金厚板是高附加值产品,生产铸造铝合金厚板是一项高技术,中国应建设铸造铝合金厚板项目。

国内外铝挤压工模具技术的发展概况与创新亮点

论述了工模具在铝合金挤压生产中的重要作用与特殊地位;介绍了铝挤压工模具技术的主要内容;着重分析了国内外挤压工模具设计制造水平及创新亮点、铝挤压工模具的使用、修理、氮化技术及现代化管理。

Modeling the Effects of Tool Shoulder and Probe Profile Geometries on Friction Stirred Aluminum Welds Using Response Surface Methodology

The present paper discusses the modeling of tool geometry effects on the friction stir aluminum welds using response surface methodology. The friction stir welding tools were designed with different shoulder and tool probe geometries based on a design matrix. The matrix for the tool designing was made for three types of tools, based on three types of probes, with three levels each for defining the shoulder surface type and probe profile geometries. Then, the effects of tool shoulder and probe geometries on friction stirred aluminum welds were experimentally investigated with respect to weld strength, weld cross section area, grain size of weld and grain size of thermo-mechanically affected zone. These effects were modeled using multiple and response surface regression analysis. The response surface regression modeling were found to be appropriate for defining the friction stir weldment characteristics.