共查询到19条相似文献,搜索用时 78 毫秒
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半固态镁合金板带双辊铸轧工艺参数研究 总被引:3,自引:0,他引:3
采用AZ91D镁合金为原料,以自行设计的双辊板带铸轧设备进行试验,研究半固态镁合金铸轧的工艺参数剪切速度、静置时间、浇铸温度对半固态组织的变化规律并对其形成机制作出分析。试验表明:剪切速度越大,浇铸温度越低,静置时间适中时半固态镁合金浆料制备的镁板带组织的固相颗粒越细小、均匀、圆整。但是由于试验各方面条件的限制剪切速度不可能太大、浇铸温度太低金属液不易流动,因此通过试验得到了最佳的工艺参数为:剪切速率为900 r.min-1、静置时间为15 min、浇铸温度565℃左右为宜。 相似文献
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本文介绍了镁合金的基本性能和优势,重点论述了半固态加工技术、连续铸轧技术、半固态镁合金连续铸轧技术及其未来展望,指出其加工技术将得到进一步发展。 相似文献
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针对铸轧3003合金铝板带产品深冲性能方面的不足,实验使用铸轧供坯3003铝合金带材,通过两种不同的生产实验方案,在冷轧轧制前对坯料进行520℃~540℃及560℃~580℃均匀化退火,对均匀化退火前后的产品显微组织、力学性能等试验指标分析,验证不同均匀化退火温度对产品金相组织以及冲压力学性能的影响。结果表明,铸轧坯料在560℃~580℃均匀化退火作用下过饱和固溶体大量析出细小均匀的第二相,成品的晶粒组织更加细小均匀,有利于提高材料的的加工性能,同时通过本实验顺利打通了产品批量工业化生产最终工艺路线。 相似文献
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ZE10 magnesium alloy sheets were prepared through ingot casting and the hot-rolling process. The mechanical properties, conical cup value (CCV), bore expanding performance, and limit drawing ratio (LDR) were investigated to examine the stamping formability of ZE10 alloy sheets, at temperatures ranging from 20 to 300℃. The results showed that the tensile strength decreased, whereas, plasticity, drawing-bulging performance, bore expanding properties, and deep drawing performance increased markedly at elevated temperatures. The CCV specimens could be drawn into the conical die' s underside cylindrical hole from the conical cliff, without cracking, and could have the minimum CCV at 200 and 250 ℃ In the bore-expanding test, the bore (φ10 mm) could be expanded to the dimension of the punch (φ25 mm) and the maximum bore-expanding ratio could be achieved at above 150℃. The limiting drawing ratio (LDR) of 2.85 is acquired during the deep drawing test at 230 v with the punch temperature of 20 - 50℃, the punch velocity of 50 mm · min^-1, and the mixture of graphite and cylinder grease as lubricant. 相似文献
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Stamping Formability of ZE10 Magnesium Alloy Sheets 总被引:1,自引:0,他引:1
ZE10 magnesium alloy sheets were prepared through ingot casting and the hot-rolling process. The mechanical properties, conical cup value (CCV), bore expanding performance, and limit drawing ratio (LDR) were investigated to examine the stamping formability of ZE10 alloy sheets, at temperatures ranging from 20 to 300 ℃. The results showed that the tensile strength decreased, whereas, plasticity, drawing-bulging performance, bore expanding properties, and deep drawing performance increased markedly at elevated temperatures. The CCV specimens could be drawn into the conical die's underside cylindrical hole from the conical cliff, without cracking, and could have the minimum CCV at 200 and 250 ℃. In the bore-expanding test, the bore (Φ10 mm) could be expanded to the dimension of the punch (Φ25 mm) and the maximum bore-expanding ratio could be achieved at above 150 ℃. The limiting drawing ratio (LDR) of 2.85 is acquired during the deep drawing test at 230 ℃ with the punch temperature of 20~ 50 ℃, the punch velocity of 50 mm·min-1, and the mixture of graphite and cylinder grease as lubricant. 相似文献
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从控制合金成分入手,对ZK61M镁合金的熔铸、热轧工艺等进行试验研究,解决了铸锭热裂、冷隔、热轧开裂等难题,生产出了合格的ZK61M热轧板. 相似文献
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高硅镁合金的制备工艺及显微组织分析 总被引:1,自引:3,他引:1
汽车发动机传动系统可采用的镁合金有AZ91D ,AM 6 0B合金[1,2 ] 。但是这些合金的抗蠕变能力较低 ,使镁合金构件与与之连接的构件间易产生旷动 ,最终导致失效。目前所开展的耐热镁合金的研究 ,其目标是在不大幅度提高成本的基础上 ,提高镁合金在 15 0~ 2 5 0℃下的高温强度和蠕变性能 ,并且具有良好的压铸性能和耐蚀性[3~ 5] 。本实验研究了高硅镁合金的熔炼制备工艺 ,分析了合金的显微组织结构。1 试验过程镁合金熔炼前首先按照实验计划进行合金的配料计算 ,然后准备炉料及所需的非金属辅助材料。将坩埚预热至暗红色 (4 0 0~ 4 5 0… 相似文献
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WE43镁合金的力学性能 总被引:1,自引:0,他引:1
通过固溶处理和不同时间的时效处理得到5种热处理状态的WE43镁合金试样,然后分别对其进行静态机械性能测试,用SEM观察微观组织和断口形貌,用光学显微镜观察金相组织,用光学显微镜观察与断口相对应的显微组织,并分析了固溶和时效热处理对WE43镁合金显微组织和力学性能的影响. 相似文献
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