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遵循低压铸造原理,按照GB1173-1995《铸造铝合金》国家标准中试棒尺寸设计制造砂型、金属模低压铸造试棒模具,在采用低压铸造工艺方法生产铸件的同时,用低压铸造试棒模浇注试棒,确保试棒等效证明低压铸造铝合金铸件性能。 相似文献
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以低压铸造铝合金车轮生产工艺为主线,分析了生产过程中对车轮材料力学性能的影响因素,着重阐述了铝锭内部品质及熔炼工艺、铸造装备及配套设备、铸造工艺与模具结构、热处理工艺控制的重要性。 相似文献
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介绍了具有导电性能要求的铝合金导体铸件的低压铸造模具的结构设计,确定了其低压铸造工艺参数。模具结构设计时考虑了分模方法的选择和铸件壁厚的调整,提出了双层浇道的侧注式浇注系统,实现了平稳充型和良好的补缩效果,生产的导体铸件同时满足气密性和导电性的工艺需求。 相似文献
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主要介绍了一种具有复杂气道铸件的低压铸造模具的结构设计,同时对该铸件进行了工艺分析,并对该模具的工作过程进行了阐述。 相似文献
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汽车铝合金喷油泵属于耐压铸件。分析其结构特征后,结合铸件的技术要求,给出了详细的低压铸造工艺。通过计算、分析,确定了其工艺参数,并设计了低压铸造模具。经实际生产验证,该工艺运行可靠,系统稳定,获得了品质良好的铸件。 相似文献
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利用FLOW-3D软件对镁合金汽车转向管柱支架压铸模具热循环效应进行数值模拟.设计两种不同的冷却水方案,通过模拟,分析了型腔内壁的温度分布和整个模具的温度分布,得出循环水道设计为弯曲结构时为较好的冷却水方案. 相似文献
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为配合广汽集团国产自主品牌轿车"传祺"的开发,针对该车型的底盘后副车架压铸零件,设计并采用FLOW-3D数值模拟软件优化出了其压铸工艺方案,据此制作了高真空压铸模具。试模及产品品质检测表明,基于MFT(Minimum Filling Time)的铝合金后副车架的浇注系统设计合理,金属液充型有序、流畅。模具分型面、顶杆以及冲头处的密封结构设计能保证压铸过程中良好的密封性能,模具型腔的真空度可在1s内达到91kPa以上。模具冷却采用分区域温度测量及冷却水流量独立调节的方法提高了模具温度控制的精度,降低了铸件缺陷发生的几率。该模具现已批量生产广汽"传祺"的铝合金后副车架零件。 相似文献
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针对铝合金机座零件的结构和挤压铸造工艺特点,对原超慢速压铸模具的进浇方式、排溢系统、冷却系统进行再设计,使其适用于挤压铸造。利用AnyCasting软件,对修改前后的模具进行模拟分析对比,修改前模拟分析的产品内部缩松缺陷与实际情况一致,修改后的模具通过更改进浇方式,扩大排气槽及溢流槽,使气体在液流充填模具型腔过程中能顺利排出;并增加冷却水路来控制模具温度,保证产品在冷却过程中实现顺序凝固,进而消除产品的内部缩松缺陷。所获得的挤压铸造铝合金支座铸件组织致密,可进行T6热处理,力学性能接近锻件性能。 相似文献
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Numerical simulation of low pressure die-casting aluminum wheel 总被引:1,自引:0,他引:1
The FDM numerical simulation software, ViewCast system, was employed to simulate the low pressure die casting (LPDC) of an aluminum wheel. By analyzing the mold-filling and solidification stage of the LPDC process, the distribution of liquid fraction, temperature field and solidification pattern of castings were studied. The potential shrinkage defects were predicted to be formed at the rim/spoke junctions, which is in consistence with the X-ray detection result. The distribution pattern of the defects has also been studied. A solution towards reducing such defects has been presented. The cooling capacity of the mold was improved by installing water pipes both in the side mold and the top mold. Analysis on the shrinkage defects under forced cooling mode proved that adding the cooling system in the mold is an effective method for reduction of shrinkage defects. 相似文献
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介绍了汽车壳体零件低压铸造工艺与模具设计.内容主要有低压铸造工艺参数的设计,包括升液压力与升液速度、充型压力和充型速度的计算、浇注温度的确定、结晶压力和保压时间的计算等;模具设计,包括模具结构与壁厚的确定、型腔尺寸的计算、型芯和抽芯的计算、模具的三维造型. 相似文献
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Jin-wu Kang Hao-long Shangguan Fan Peng Jing-ying Xu Cheng-yang Deng Yong-yi Hu Ji-hao Yi Tao Huang Long-jiang Zhang Wei-min Mao 《中国铸造》2021,18(1):18-28
The cooling control of the melt during the casting process is of great significance. A comprehensive closed-loop cooling control of castings by adopting a skeletal sand mold design was proposed. The skeletal sand mold consisting of an adaptive shell, functional cavities and a support was designed and created based on the finite difference meshes of a casting. It was applied to a round wall test casting. Two kinds of skeletal sand molds, one with lattice support and the other with enforcing ribs for this casting were designed and printed out by the 3 D printing(3 DP) method. Aluminum alloy A356 was cast by using these two sand molds. The first mold was cooled by natural convection, the other one by water spray cooling. Two sound castings were obtained. The sand mold temperature, cooling curves, microstructures, mechanical properties, residual stress and deformation were measured, compared and discussed. Water spray cooling hastened the cooling rate by 62%, increased the content of Mg and Cu in the α-Al matrix, improved the mechanical properties, and altered the surface residual stress state. 相似文献