共查询到20条相似文献,搜索用时 46 毫秒
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我厂长期来生产Z1102、Z1105合金,但由于铝硅中间合金的熔炼工艺不过关,造成零件大量报废。 相似文献
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提出用电热法炼铝产出的高铝铝硅合金作皮江法炼镁的还原剂。由于其成本较低,还原白云石产出的镁蒸气压较高,因而比硅铁和铝作还原剂具有更多的优点。对几种还原剂进行比较,对高铝合金生产的可行性进行了论述,并进行了高铝合金还原煅烧白云石的理论计算。 相似文献
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硅含量对新型铝锡硅合金摩擦磨损性能的影响 总被引:2,自引:1,他引:1
袁鸽成 《中国有色金属学报》1998,8(A01):101-105
借助环-块式摩擦磨损试验机,在干摩擦及油润滑状态下,研究了含Si量1%-5%的新型Al-10Sn-Si三相合金及传统的Al-20Sn两相合金的摩擦磨损2性能及行为。 相似文献
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提出在pH=5.0,的缓冲体系中,用CuY^2-有色络合物吸光光度法测定Al-Cu中间合金中铜含量的一种简便快速的方法。 相似文献
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高导电性铝硅合金及其生产工艺 总被引:3,自引:1,他引:2
对影响铝硅合金导电性的工艺因素进行了研究。降低合金的钛、镁含量或变质处理均能够提高合金的导电性;晶粒细化处理降低合金的导电性;固溶处理显著降低合金的导电性;时效处理对导电性的影响不大。采用专门的热处理工艺,可使铝硅合金的电导率达到41%IACS以上,满足了输变电开关设备对铝合金性能的特殊要求 相似文献
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论述了各种工艺因素,诸如化学成分,均热制度,热轧及热精轧温度,冷轧变形量,中间退火温度等对罐板用铝合金板的性能,特别是深冲性能的影响。通过试验与分析得出应采取的最佳工艺方案与工艺路线。同时提出了为完善罐板国产化需配套建立先进的辅助生产线的建议。 相似文献
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液态铝阴极法制备铝钙中间合金 总被引:2,自引:0,他引:2
在CaCl2-CaF2体系中,以CaO为电解原料,采用液态铝阴极法生产铝钙中间合金。采用熔盐电解监控仪测量电解过程中的反电动势、槽电压、电流等工艺参数及电解波形图,通过电位控制法调节CaO的加料周期,同时根据所得合金产品中的钙含量(质量分数)探讨影响电流效率的因素。结果表明:反电动势随电流密度增加而增大,通过控制电位法测得加料周期为30 min;在740℃、电流为7 A的条件下,电解1 h可制取钙含量为11.6%的铝钙合金,电流效率可达67.3%。 相似文献
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R. Lapovok I. Timokhina P.W.J. McKenzie R. ODonnell 《Journal of Materials Processing Technology》2008,200(1-3):441-450
The equal channel angular processing (ECAP) technique has been applied to an automotive aluminium alloy sheet (A6111). The technique utilizes a machine that was specially designed for this purpose at Monash University. It was determined that ECAP is able to refine the grain size of the sheet, diminish the detrimental as-rolled texture components in the sheet and retain an acceptable level of bi-axial ductility such as is required during the automotive forming process. Experiments were carried out on annealed, as-received sheets that were subjected to either one or two passes through the ECAP machine. For the second ECAP pass, the sheet could be processed in the same orientation as the first pass (route A) or it could be rotated 180° about the direction of feeding (route C). It was determined that route A produced marginally improved properties compared to sheet processed via route C, and that due to the frictional heating generated during the second pass, a significant amount of recovery occurred in the sheet such that an improved combination of texture and formability resulted after two passes compared to the same sheet exposed to only a single pass. 相似文献
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Takehiko Watanabe Hajime Itoh A. Yanagisawa Makoto Hiraishi 《Welding International》2013,27(9):633-639
In this study, the authors applied the ultrasonic welding method to weld A6061 heat treatable aluminium alloy and investigated the effects of clamping load and welding time on the properties of the weld. In addition, in order to improve the strength of the joint, the effectiveness of the ethanol droplet on the faying surface was examined. The following results were obtained. The joint strength increased with clamping load and welding time. The fracture of the joint produced under the welding conditions of 1176 N clamping load and 1.5 s welding time occurred in the base metal. The ethanol droplet on the faying surface successfully produced the joint with a strength equivalent to that of the base metal under the welding conditions of smaller clamping load and shorter welding time than the case without ethanol droplet. The softening around the welded area that was performed with the ethanol droplet was smaller than that in the welded area produced by other methods such as TIG and friction stir welding. The fracture surface of the joint welded with the ethanol droplet was remarkably irregular and rough. A dimple pattern was observed over a wide area, indicating that the welded area was significantly expanded. The ethanol droplet made the temperature of the weld area higher than that without ethanol, resulting in improved joint strength with an increase of the plastic deformation at the interface. 相似文献
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针对铝板冲压回弹严重的问题,以某汽车铝合金天窗加强板零件为例,研究了减少回弹的措施。首先,对该零件进行工艺分析,初步确定冲压工序;然后,借助同步工程的理念,对回弹较为严重的零件特征进行优化,最终确定冲压工序为OP10落料,OP20拉延,OP30切边和冲孔,OP40切边和冲孔,OP50切边和整形;其次,利用AutoForm软件进行全工序模拟,分别进行整体和局部回弹补偿,使得产品回弹后的尺寸满足公差要求;最后,基于板料流入量进行模具调整,利用调压垫片,控制板料流动性,减少回弹。最终生产表明,同步工程、回弹补偿和调整板料流入量这三者相结合能够有效地减少铝板回弹。 相似文献
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