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Research on the Way of Obtaining the Parts of Sintered Powders by Injection Moulding

机译：注射成型法制备烧结粉零件的方法研究

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For obtaining small parts with complex shape, for which a finishing operation cannot be applied easily, injection forming can be used. For a successful applying of this procedure not only the conditions of the injection process deployment must be taken into consideration, but also the conditions of the binder removal. These conditions impose, in a big measure, the feedstock characteristics, especially the ones of the binder used. The characteristics of the binder mixed with powder influence the injection process, the debinding process and the quality of the injected and sintered parts. Regarding that the binders used are formed from many components, it is very important to know the measure that each of them determines the rheological characteristics of the mixture. In the research made, a binder was used formed from polyethylene, paraffin and stearic acid, a binder which is often used to obtain mixtures for injection. It was watched how these components influence the binder characteristics, the injection process deployment and the effect they have on the quality of the debinded parts.
机译：为了获得形状复杂，难以进行精加工的小零件，可以使用注射成型。为了成功应用此程序，不仅必须考虑注入过程的部署条件，而且还必须考虑去除粘合剂的条件。这些条件在很大程度上强加了原料特性，尤其是所用粘合剂的特性。与粉末混合的粘合剂的特性会影响注射过程，脱脂过程以及注射和烧结零件的质量。关于所使用的粘合剂是由许多组分形成的，了解每种粘合剂决定混合物流变特性的方法非常重要。在进行的研究中，使用了一种由聚乙烯，石蜡和硬脂酸形成的粘合剂，该粘合剂通常用于获得注射用混合物。观察了这些组分如何影响粘合剂的特性，注射过程的展开以及它们对脱胶零件质量的影响。

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