Tribosystems for cold forming processes based on volatile lubricants and laser structured surfaces

基于挥发性润滑剂和激光结构化表面的冷成型工艺摩擦系统

• 批准号: 282210782
• 负责人: Professor Dr. Thomas Graf
• 金额: --
• 依托单位: Institut für Grenzflächenverfahrenstechnik und Plasmatechnologie IGVP
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/282210782?language=en
• 关键词: Tribosystems; cold; forming; processes; based

Most metal forming processes use lubricants based on mineral oils as an intermediate medium to reduce friction and wear. However, These lubricants may contain toxic additives and the formed parts need to be cleaned for further process steps which is very time consuming andexpansive. During the first two funding periods an innovative and environment friendly lubrication system for metal forming processes was introduced. Liquid carbon dioxide and gaseous nitrogen are being used as volatile lubricant media. The suitability of this newtribological system for dry metal forming processes was demonstrated by single forming processes. The goal for the third funding period is to demonstrate the usability of this new tribological system for dry metal forming processes with a practical orientation. Therefore we will Show the suitability of the new tribological system for forming processeswithin endurance runs. For this demonstration it is necessary to ensure process stability. For the purpose of process stability it is essential to optimize the new tribological system. A deeper understanding of the friction and wear mechanisms within thiscomplex tribological system serves as a basis for optimization. Furthermore it is important to understand the physical mechanisms during the escape of the volatile lubricant media during the forming process. Micro drillings of highest precision and quality are necessaryto ensure process stability. Precise drillings without any Burr guarantee a stable and reproducible flow of the volatile lubricant media and avoid any additional friction. The generation of Surface structures that ensure a homogeneous distribution of the volatilelubrication media are an additional step towards an increased process stability. The practical relevance of this new tribological system will be shown by forming additional metal sheet materials with increased adhesion tendency. In this case the tribological system needs to beadapted to ensure the separation of the basic body and the antibody and to reduce and adapt friction during the forming process. Within the different institutes the following steps will be realized: 1) advancement in understanding the tribological system taking anothermetal sheet material into account. 2) Optimization of the current tribological system. 3) Investigation and extension of process stability within endurance runs of forming processes with a locally adapted tribological system.

大多数金属形成过程都使用基于矿物油的润滑剂作为中间培养基，以减少摩擦和磨损。但是，这些润滑剂可能包含有毒添加剂，并且需要清洁形成的零件以进行进一步的过程步骤，这是非常耗时且expect弱的。在前两个资金期间，引入了用于金属形成工艺的创新和环境友好的润滑系统。液态二氧化碳和气态氮被用作挥发性润滑剂培养基。单个形成过程证明了这种新培养基系统对干金属形成过程的适用性。第三个融资期的目标是证明这种新的摩擦学系统用于以实践取向的干金属形成过程的可用性。因此，我们将展示新的摩擦学系统对耐力运行的过程的适用性。对于此演示，有必要确保过程稳定性。为了过程稳定，必须优化新的摩擦学系统。对此复杂的摩擦学系统内的摩擦和磨损机制有更深入的了解是优化的基础。此外，重要的是要在成型过程中了解挥发性润滑剂培养基的逃脱过程中的物理机制。必须使用最高精度和质量的微钻，以确保过程稳定性。精确的钻孔没有任何毛刺保证挥发性润滑剂培养基的稳定且可重复的流动，并避免任何其他摩擦。确保挥发介质均匀分布的表面结构的产生是迈向提高过程稳定性的另一个步骤。这种新的摩擦学系统的实际相关性将通过形成具有增加粘附趋势的其他金属材料来显示。在这种情况下，摩擦学系统需要进行束缚，以确保基本身体和抗体的分离，并在形成过程中减少和适应摩擦。在不同的机构中，将实现以下步骤：1）理解摩擦学系统的进步，考虑了另一种金属板材的材料。 2）优化当前的摩擦学系统。 3）通过本地适应的摩擦学系统的耐力运行过程中的过程稳定性调查和扩展。