Artificial aging of water miscible metal working fluids

在各种工业制造过程中，金属加工液因其冷却和润滑能力而具有很高的相关性。水基MWFs容易被微生物定植，从而导致老化和化学成分在使用寿命期间发生变化。本建议的中心目标是对水基金属加工液老化的因果关系进行科学调查。因此，通过摩擦学试验和金属加工过程来评估金属加工液老化的各个方面是一个核心组成部分。MWF老化的定义“方面”应人为创建，以便评估它们彼此孤立的相关性。评估应通过已建立的摩擦学测试以及金属切削和磨料工艺进行。对于验证系统的生成，计划详细描述常规MWF的“自然老化过程”，以确定MWF老化对相关实际应用的影响。此外，将建立一个参考系统来评价孤立的方面。关于水基MWF因老化过程而质量下降的拟议项目的预期知识增益与金属加工工业的一个大部门高度相关。研究结果有助于将监测和维修措施集中在实际影响MWFs加工性能的老化方面。例如，这可能导致更有效地使用杀菌剂。一般来说，由于所获得的结果，预计MWFs的使用寿命将大大延长。然而，预期的进展只能通过在人为和确定的系统中对实际相关参数进行基础研究来实现。

For various industrial manufacturing processes, metalworking fluids are of high relevance due to their cooling and lubricating ability. Water-based MWFs are prone to the colonization by microorganisms which leads to aging and a change of the chemical composition over service life. The central objective of the present proposal is the scientific investigation of cause and effect relationships within the aging of water-based metal working fluids. Hereby, the evaluation of separated aspects of the metal working fluid aging by tribology tests and metal working processes is a central component. Defined "aspects" of MWF aging shall be artificially created in order to evaluate their relevance isolated from each other. The evaluation shall be conducted by established tribology tests as well as metal cutting and abrasive processes. For the generation of a validation system, it is planned to characterize the “natural aging process” of a conventional MWF in detail to identify the influence of MWF aging on relevant practical applications. Furthermore, a reference system will be created for the evaluation of the isolated aspects.The intended gain of knowledge of the proposed project regarding the loss of quality of water-based MWF due to the aging process is of high relevance for a large sector of the metalworking industry. The results will help to concentrate monitoring and maintenance measures on aging aspects which actual influence the MWFs performance in machining processes. This could lead, for example, to a more efficient application of biocides. In general, a considerably enlargement of the MWFs service life is expected due to the obtained results. However, the intended progress can only be achieved by fundamental research of the actual relevant parameters within an artificial and defined system.