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首页> 外文会议>International Conference on Solidification and Gravity; 20040906-09; Miskolc-Lillafured(HU) >Effect of the Segregation of Different FE-Phases on the Susceptibility to Cracks of AL-Cylinder Heads
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Effect of the Segregation of Different FE-Phases on the Susceptibility to Cracks of AL-Cylinder Heads

机译：有限元相的分离对铝制缸盖裂纹敏感性的影响

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Suppliers of the motor-car industry have to confront more and more with the fact that the main goal of the motor factories is to produce lighter and more highly efficient components. One of the most important part of the car - or the most important - is the cylinder-head. Higher efficiency and smaller weight are principle in this field, too. However, one of the largest disadvantage of thin walls is the susceptibility to cracks. Hydro Aluminium Gyor Ltd. had to confront with this phenomenon that required a better quality in the cylinder-head production. To meet the high strength requirements, continuous technology-development and production discipline are necessary. A good information background was assured for our developments by the knowledge base and equipment accumulated in the R&D center that belongs to the concern. During our experiments we lay great emphasis during our experiments on the quality of the melt and the cooling rate in the die. In the experiments, carried out with our Al suppliers, we determined the parameters that give yield the best quality Al die. This is essential for the high strength properties and to reduce the susceptibility to cracks.rnAnother aim of the tests was to find the importance of the cooling schedule. With the support of our R&D center, we succeeded in determining the optimum cooling parameters. Thermo-shock tests were very profitable to check the efficiency of the changes.rn1. Appearance of the problems, basic conditions:rnIt was necessary to make further experiments, because during the year 2003 two new cylinder-headsrnarrived at our company and we had several problems during the manufacturing.
机译：汽车工业的供应商必须面对越来越多的事实，即汽车工厂的主要目标是生产更轻，更高效的零部件。汽缸盖是汽车最重要的部分之一，也是最重要的部分。更高的效率和更小的重量也是该领域的原则。然而，薄壁的最大缺点之一是容易产生裂纹。 Hydro Aluminium Gyor Ltd.必须面对这种现象，要求气缸盖生产中的质量更高。为了满足高强度要求，必须不断进行技术开发和生产。属于关注点的研发中心中积累的知识库和设备为我们的发展提供了良好的信息背景。在我们的实验过程中，我们在实验中非常重视熔体的质量和模具中的冷却速率。在与我们的铝供应商进行的实验中，我们确定了可提供最高质量铝模具的参数。这对于高强度性能和降低裂纹敏感性至关重要。测试的另一个目的是发现冷却时间表的重要性。在研发中心的支持下，我们成功确定了最佳的冷却参数。热冲击测试对于检查变化的效率非常有利。问题的出现，基本条件：有必要进行进一步的试验，因为在2003年，我们公司有两个新的气缸盖装进了气缸盖，在制造过程中遇到了几个问题。

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