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首页> 外文会议>ASME International Mechanical Engineering Congress and Exposition >TECHNOLOGY DEVELOPMENT AND TOOL CONCEPTS FOR HIGH-TEMPERATURE FORMING OF TITANIUM
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TECHNOLOGY DEVELOPMENT AND TOOL CONCEPTS FOR HIGH-TEMPERATURE FORMING OF TITANIUM

机译：高温成型技术开发与工具概念

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Due to its excellent material properties, titanium is an important structural material for several application fields in the aerospace industry, the chemical industry, medical engineering or marine technologies. Especially its excellent weight-strength ratio, high-temperature strength corrosion resistance and not least its biocompatibility enables a wide field of special applications. These properties can be improved by alloying of other chemical elements. Despite good availability of resources and moderate world market prices, there is only a limited application range for titanium. Main reasons comprise technological problems in manufacturing processes, particularly related to establish forming technologies such as deep drawing or hydroforming. The forming tool is of significant importance in forming technologies. Beside the function of shape storage the tool must provide the essential forming parameters such as mechanical functions (e.g. blank holder, sealing etc.), but also temperature and tribology. Especially the tribology, also related to forming temperatures, is very critical during titanium forming due to a distinctive tendency of adhesion. For this reason, a high number of titanium components are manufactured by milling. Parts made by forming of basically thin blank, show only low complexity. More complex components are made by welding of simple shaped parts. Thus, large-series manufacturing of titanium components is limited due to the extensive production cost. By describing three examples, this paper shows possibilities and challenges in manufacturing of titanium components based on sheet metals. Beside the process parameters, a special focus of the investigations lies on the coating of forming tools. Example one is cold forming of thin titanium blanks to speaker cones. The second example demonstrates superplastic forming of a medical application, and finally the third example consists of hot gas forming of a titanium exhaust manifold. The investigations have shown that based on optimized technological parameters in combination with new tool coatings, the manufacturing of complex sheet metal based titanium applications is applicable for large-series production.
机译：由于其优异的材料特性，钛是航空航天工业，化学工业，医学工程或海洋技术的几种应用领域的重要结构材料。特别是其优异的体重强度比，高温强度耐腐蚀性，并且其生物相容性尤其是宽阔的特殊应用。通过其他化学元素的合金化可以改善这些性质。尽管资源和适度的世界市场价格良好，但钛的应用范围仅有限。主要原因包括制造过程中的技术问题，特别是与建立深层拉伸或液压成形等形成技术相关。成形工具在形成技术方面具有重要意义。除了形状存储的功能旁边，该工具必须提供必要的成形参数，例如机械功能（例如坯料支架，密封等），还要提供温度和摩擦学。特别是摩擦学，也与成形温度有关，由于粘附的倾向，在钛形成期间非常关键。因此，通过研磨制造了大量钛部件。通过形成基本薄的空白制成的部件仅显示出低复杂性。更复杂的部件是通过焊接简单的零件来制造的。因此，由于广泛的生产成本，大型钛成分制造受限。通过描述三个例子，本文示出了基于片状金属制造钛成分的可能性和挑战。除了过程参数旁边，调查的特别焦点在于成型工具的涂层。实施例一是对扬声器锥体的薄钛坯料的冷成形。第二实施例表明了医学应用的超塑性形成，最后第三示例由钛排气歧管的热气体形成。该研究表明，基于优化的技术参数与新工具涂层组合，复杂金属板基钛应用的制造适用于大型生产。

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