基于匀加速料筒孕育半固态压铸制备薄壁复杂空腔手模的研究与实践

Research and Practice of Producing Thin-Walled Complex Cavity Glove Mold Based on Semi-Solid Die Casting with Uniformly Accelerated Charging Barrel Inoculation

随着全球节能减排、碳达峰、碳中和的发展需求,各行业零部件轻量化、绿色化成为必然发展之路。生产医疗用橡胶、丁腈手套所需要的手模一直以来都采用陶瓷型,虽能满足功能性要求,但其存在能耗大、易破损、无回收等缺点。改用易回收的金属材料成为研究热点,铝合金以其质轻成为研究首选。由于手模部件具有薄壁、内腔复杂等特点,并需要与挤压成型部件进行焊接,采用铝型材冲压制备成本高,普通压铸存在复杂内腔难以成形和铸件不能焊接等难题。本研究基于自主开发的匀加速料筒孕育半固态压铸技术,通过数值模拟分析优化压铸工艺,采用优选的树脂砂芯,成功制备出铝合金复杂空腔手模压铸件。开发出的产品满足了项目要求,也为复杂空腔压铸件研发提供了很好的技术实例和参考。

With the global demand for energy conservation and emission reduction,carbon peaking,carbon neutrality,the lightening and greening of components in all industries has become an inevitable development path.The glove models required for producing medical rubber and nitrile gloves have always been made of ceramic materials.Although they can meet functional requirements,but have disadvantages such as high energy consumption,easy damage,and no recycling.Switching to easily recyclable metal materials has become a research hotspot,and aluminum alloys have become the preferred choice for the research due to their lightweight.Due to the characteristics of thin-walled and complex inner cavities of the hand mold components,and being necessary to weld with the extrusion forming parts,and the cost of using aluminum profiles for stamping preparation is high.Ordinary die-casting has difficulties in forming complex inner cavities and the casting cannot be welded.In this study,based on the self-developed uniformly accelerated charging barrel inoculation semi-solid diecasting technology,through numerical simulation analysis optimizing the die-casting process,and applying the optimized resin-bonded sand core,the aluminum alloy glove model die castings with complex cavity have been successfully prepared.The developed products meet the project requirements and provide excellent technical examples and references for the research and development of complex cavity die-casting parts.