Modeling Possibilities of Very High Temperatures and Pressures at Friction Contact Plastics Filled with Glass Fibers on Steel

作     者：Dorin Rus Lucian Capitanu Liliana-Laura Badita 

作者机构：Mechanical Department Institute of Civil Engineering Bucharest 050153 Romania Technology Tribology Department Institute of Solid Mechanics of the Romanian Academy Bucharest 010141 Romania National Institute of Research and Development in Mechatronics and Measurement Technique Bucharest 021631 Romania 

出 版 物：《材料科学与工程（中英文A版）》 (Journal of Materials Science and Engineering A)

年 卷 期：2013年第3卷第10期

页      面：667-677页

学科分类：0820[工学-石油与天然气工程] 080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 082002[工学-油气田开发工程] 080201[工学-机械制造及其自动化] 

主　　题：接触压力 玻璃纤维 塑料材料 摩擦接触 温度值 钢板 建模 热塑性材料 

摘      要：Often for the laboratory studies, modeling of specific tribological processes raises special problems. One such problem is the modeling of some temperatures and extremely high contact pressures, allowing modeling of temperatures and pressures at which the injection or extrusion processing of thermoplastic materials takes place. Tribological problems occur mainly in thermoplastics materials reinforced with glass fibers. They produce an advanced wear to the barrels and screws of processing machines, in short time. Obtaining temperatures around 210 °C and higher, as well as pressures around 100 MPa is very difficult in the laboratory. This paper reports a simple and convenient solution to get these conditions, using friction sliding couples with linear contact, cylindrical liner plastic filled with glass fibers on plate steel samples, polished and super-finished. C120 steel, which is a steel for moulds and Rp3 steel, high speed steel for tools, were used. Obtaining the pressure was achieved by continuous request of the liner in rotational movement up to its elasticity limits, when the dry friction coefficient reaches or exceeds the hardness value of 0.5 HB. By dissipation of the power lost by friction on flat steel sample, are reached contact temperatures at the metal surface that reach and exceed 230 °C, being placed in the range temperature values?of the injection. Contact pressures (in load and materials conditions used) ranging from 16.3-36.4 MPa were obtained depending on the plastic material used and the glass fibers content.