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Investigation into Lubrication Mechanism at the interface between Tool and Workpiece by Using Lubricant with Fluorescer in Metal Forming

金属成形中荧光剂润滑剂对工具与工件界面润滑机理的研究

基本信息

批准号：
06452334
负责人：
AZUSHIMA Akira
金额：
$ 3.65万
依托单位：
Yokohama National University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06452334/
关键词：
Fluorescer Direct Observation Tribology Metal Forming Lubrication Mechanism

项目摘要

In metal forming, the tribological behavior at the interface between tool and workpiece is an important phenomenon, because it effects the coefficient of friction, the surface quality of productions and so on. If this phenomenon is understood, it will be possible to control the surface quality and tool life. In particular, the micro contact condition at the interface must be quantitatively understood. In order to make direct observation of the micro contact condition at the interface in drawing and extrusion, a transparent quartz glass is used. However, it is impossible to make direct observation of the roll-workpiece interface.In this study, the lubricant with fluorescer is used to make clear the micro contact condition in rolling. In experiment, tribological facters such as rolling speed, viscosity of lubricant, surface roughness of material are varied. The results obtained as follows.1. The lubricant with fluorescer is useful to make clear the micro contact condition in rolling.2. The micro distribution of lubricant on the workpiece surface is made clear by the photograph.3. The inlet film thickness in emulsion decreases with increasing viscosity of lubricant.4. In emulsion with high viscosity of lubricant, an unevenness of lubricant is observed.

在金属成形过程中，刀具与工件界面处的摩擦学行为是一种重要的现象，因为它影响着摩擦系数、制品表面质量等。如果了解了这一现象，就有可能控制表面质量和刀具寿命。特别是，必须定量地了解界面处的微接触条件。为了直接观察拉伸和挤压过程中界面处的微接触情况，采用了透明石英玻璃。然而，直接观察滚-工件界面是不可能的。在本研究中，使用荧光剂润滑剂来明确轧制过程中的微接触条件。在实验中，对轧制速度、润滑剂粘度、材料表面粗糙度等摩擦学因素进行了研究。研究结果如下：含荧光剂的润滑剂有助于明确轧制过程中的微接触情况。3.通过照相，可以清楚地看到润滑剂在工件表面的微观分布。随着润滑油粘度的增加，乳液进口膜厚度减小。在具有高粘度润滑剂的乳液中，观察到润滑剂的不均匀性。