共查询到19条相似文献,搜索用时 78 毫秒
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我国是铸件出口大国,由于企业条件不同,管理方式也各式各样,造成出口铸件质量良莠不齐,容易引起质量纠纷和索赔。如何最大限度地减少出口铸件质量损失成为铸造企业的难题。本文总结了韶铸在如何避免出口铸件质量索赔方面的心得与体会。 相似文献
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从当前我国铸造企业所处的国际、国内经济形势出发,对我国铸件出口企业所面临的一些问题进行了分析。结合作者多年在铸造厂的出口铸件工作经历,以及对出口铸件国际贸易惯例的了解,通过一些案例分析,全面系统地总结了铸件出口经营者应该采取的策略。希望能对业内同行有所借鉴,对经营出口的铸造企业提供实质帮助。 相似文献
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从QDC原则看铸件出口 总被引:1,自引:0,他引:1
张广德 《中国铸造装备与技术》2002,(6):5-6
本文从质量、交货期和提高出口铸件的效益三方面针对我国铸件出口目前存在的一些问题提出自已的看法,并阐明了三者之间的关系。力争对我国铸造企业在出口铸件的工作中给予一些有益的提示。 相似文献
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结合从事复杂出口铸件报价的实际经验,总结出复杂出口铸件报价应考虑的九个方面,以做到报价准确,达到吸引外商,扩大铸件出口创汇之目的。 相似文献
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我国作为全球最大的铸件生产国,本应在世界铸件贸易中也占据主导地位,但从目前的情况看,我国铸件出口却是喜忧参半,铸件出口要想再上台阶,尚有许多问题亟待解决。 相似文献
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介绍了连铸坯质量监视管理系统的产生背景、架构设计、业务规则和实现方法,此系统的应用可实现对浇次头尾坯、接痕坯、混浇坯以及敞浇等非稳态浇铸坯的实时监视和信息传递,缺陷铸坯及时分拣下线可提高热送直装效率并降低缺陷坯发后工序造成的质量损失。 相似文献
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《中国铸造》2006,3(3)
The International Foundry Forum is a "Summit"of the Foundry World.
It is the convention of the CEO world wide, of important casting users, ferrous and non-ferrous foundries as well as foundry equipment and consumable suppliers. Their overall goal is to increase the market opportunities for metal castings in competition with other processes and products in a global business environment. 相似文献
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对几百款铝合金车轮的冲击试验、弯曲疲劳试验和径向疲劳试验进行了有限元分析,并通过台架试验进行验证对比,研究总结出了低压铸造铝合金车轮有限元强度分析的方法及边界条件,为铝合金车轮的结构设计和安全使用提供了参考。 相似文献
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《International Journal of Cast Metals Research》2013,26(1-4):327-330
AbstractHigh pressure die casting (HPDC) experiments were conducted on a 650 t cold chamber die casting machine to study the interfacial heat transfer behaviour between casting and die. A 'step shape' casting and two commercial alloys namely ADC12 and AM50 were used during the experiments. Temperature and pressure measurements were made inside the die and at the die surface. The metal/die interfacial heat transfer coefficient (IHTC) was successfully determined based on the measured temperature inside the die by solving the inverse heat transfer problem. The IHTC was then used as the boundary condition to determine the 3-D temperature field inside the casting. Based on the predicted temperature distribution, the pressure distribution inside the casting was evaluated by assuming that the transferred pressure from the plunger tip of the injection side to the casting is primarily influenced by the solid fraction of the casting. Reasonable agreement was found between the determined pressure values and the measured pressures at the die surface of the casting. 相似文献
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铝合金副车架前铸铝支座属于薄壁类铸件,为了更好地保证产品质量,确保铸件外观、性能均符合技术要求,本文从铸件结构特性、铸造热节、浇注方案、工艺参数等方面进行工艺研究分析。实践结果表明,通过对前铸铝支座的结构特性分析,利用砂芯成型铸件局部内凹结构,增设网格改善铝液充型能力、增强产品热节部位补缩效果,增加风冷进行局部冷却、优化浇注系统、优化顶杆排布等方法可以很好地提高铝液充型能力、改善铸件局部过热、实现顺序凝固、避免打料变形等问题,极大程度地解决了前铸铝支座铸造缺陷,提高了铸件成品率。 相似文献
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Yuichi Motoyama Hiroki Takahashi Yuki Inoue Keita Shinji Makoto Yoshida 《Journal of Materials Processing Technology》2012,212(6):1399-1405
To predict and control the residual stress present in sand castings manufactured via CAE (Computer Aided Engineering), the mechanical interaction between the casting and the sand mold during cooling must be determined experimentally. A device was developed in this study to determine the load on the casting caused by the resistance of the mold and the contraction of the casting during cooling. Our device consists of two modules that work simultaneously: a module containing a load cell, for measuring the load on the casting during cooling and a module containing an LVDT (Linear Variable Differential Transformer) for measuring the contraction of the casting during cooling. In performance verification testing, the device enabled the simultaneous measurement of the load on the sand casting and the contraction of the casting. This measurement was performed dynamically during the cooling process. Additionally, for the case where the contraction of the casting was hindered by the sand mold, the permanent deformation of the casting after shake out (which leads to residual stress in the casting) was successfully measured using our device. 相似文献
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采用不同铸造工艺对变矩器铝轮产品组织致密度、工艺出品率、气孔夹渣铸造缺陷等有显著影响。通过分析重力铸造和低压铸造工艺的优缺点,确定低压铸造工艺为变矩器的最佳生产工艺。 相似文献