合成型蜗轮蜗杆油的发展及应用

简述合成型蜗轮蜗杆油的发展现状、性能,介绍聚α-烯烃(PAO)、合成酯、聚醚(PAG)等在蜗轮蜗杆油中的应用,并对合成型蜗轮蜗杆油的未来前景进行展望。     

高性能蜗轮蜗杆油的研制

研制的蜗轮蜗杆油经过MHK-500梯母肯试验并且经分析检测,结果表明,新配制的蜗轮蜗杆油具有优异的摩擦磨损性能,使蜗轮磨损大大降低,油品的抗氧化和抗乳化性能都有大幅度提高。     

油品组成对蜗杆副承载能力的影响

通过对15种不同添加剂配方的试验蜗轮蜗杆油进行胶合承载能力台架评定试验，以考查不同类型、不同含量的极压抗磨剂、油性剂等对蜗轮蜗杆承载能力影响的结果。     

蜗轮蜗杆油评定台架的研制

本文介绍了研制蜗轮蜗杆油专用评定台架的必要性及所研制的ＷＬ—１００蜗轮蜗杆油评定台架的结构、性能及特点。还介绍了其效率、胶合承载能力评定方法及评定试验的重复性研究。     

初轧机压下系统润滑油品高层交换代试验研究

润滑油添加剂复配技术的迅速发展，使润滑机理发生了质的变化，过去蜗轮蜗杆油的关键指标是：增加在金属表面的吸附能力。新的概念是：在接触表面上“原位”生成保持膜，减少甚至防止金属损伤。本研究在这个机理指导下，研制出磨损寿命可以成保增长的蜗轮蜗杆油。     

初轧机压下系统润滑油品高层次换代试验研究

润滑油添加剂复配技术的迅速发展,使润滑机理发生了质的变化,过去蜗轮蜗杆油的关健指标是:增加在金属表面的吸附能力。新的概念是:在接触表面上“原位”生成保护膜(聚合膜、MoS_2膜、转移膜等),减少甚至防止金属损伤。本研究在这个机理指导下,研制出磨损寿命可以成倍增长的蜗轮蜗杆油。     

基于润滑性能优先的平面二次包络环面蜗杆副参数优化设计

这里对平面二包蜗杆副啮合过程中润滑油膜产生的条件和机理进行分析，提出以润滑性能为优先考虑因素进行蜗杆副的参数优化设计，以蜗轮齿根弯曲强度、接触强度、蜗杆根切等为约束条件，以外点罚出法作为优化算法，并用VB开发相应软件包，提出蜗杆副设计的新思路。     

油品组成对蜗杆副传动效率的影响

通过对15种不同添加剂配方的试验蜗轮蜗杆油进行传动效率台架评定试验,以考察不同类型、不同含量的极压抗磨剂、油性剂等对蜗杆副传动效率的影响结果.     

阀门电动装置蜗杆副传动质量研究

针对阀门电动装置蜗杆副传动效率低的问题,分析了影响蜗轮蜗杆传动质量的主要原因,介绍了蜗轮齿面啮合区的特征,提出了利用最佳啮合图制造"人工油涵"、合理设计几何参数、正确使用润滑方式和科学选择蜗轮蜗杆的配对材料等方法提高阀门电动装置蜗杆副的传动质量。     

蜗轮蜗杆油胶合承载能力试验研究

通过进行大量的台架评定探索性试验，研究开发出蜗轮蜗杆油胶合承载能力台架评定试验方法，对蜗杆传动的摩擦学设计及新型润滑油的开发具有实际指导意义。     

二次包络蜗轮副润滑油润滑性能的试验研究

通过对二次包络蜗轮副接触形态进行理论分析,对润滑油的选用提出了要求,提出了评价包络蜗轮副润滑油润滑性能的方法,并对几种润滑油在平面二次包络蜗轮副上进行了实机实验,得出了一些有益的结论。     

The effects of lubricating oil additives on the performance of worm gears

The effects of various types of lubricating oil additives (fatty oils, sulfurized fatty oils, metal soaps, E.P. additives) were investigated with a power circulating worm gear testing machine using hardened steel worms and phosphor bronze wheels and the following results were obtained:

1.

(1) All additives used showed antiseizure properties in worm gear lubrication of steel and phosphor bronze.     

Anti‐friction,anti‐wear and load‐carrying characteristics of environment friendly additive formulation

The extreme pressure (EP), anti‐wear and friction‐reducing characteristics of some of the commercial additive formulation and individual components on which these formulations are based have been studied and compared to characteristics of the components synthesised from naturally available non‐traditional vegetable oils and cashew nut shell liquid that have been refined and partially hydrogenated to improve stability. It has been shown that individual components from sulphurised and phosphosulphurised vegetable oils, esters and hydrogenated cardanol (derived from cashews) have better anti‐wear and friction‐reducing characteristics than the sulphurised olefins and alkylaryl phosphorothioates normally used as EP and anti‐wear additives, while the load‐carrying characteristics of a number of the combination of these derivatives are comparable. It has been shown that all these formulations are rapidly biodegradable and non‐toxic in nature as compared to traditional EP, anti‐wear and friction‐reducing additives, which fill in the category of slightly toxic to harmful. It is possible to formulate energy‐efficient EP gear oils that are fully biodegradable and non‐toxic by a combination of vegetable oil‐based additives of sulphurised vegetable oils, phosphosulphurised methyl recinoleate and phosphosulphurised hydrogenated cardanol amine borate, which meet all the performance characteristics of US steel 224 eg 52100, M‐50 AISI 1010 requirements. Copyright © 2007 John Wiley & Sons, Ltd.     

抗磨添加剂对不同服役阶段润滑油摩擦学性能的影响

采用黏度测试仪测定新油及3种不同服役阶段润滑油的黏度,采用UMT-II摩擦磨损试验机考察其摩擦学性能,并同时考察3种在用润滑油添加抗磨添加剂后的摩擦学性能。研究结果表明:润滑油的黏度随着运行里程数的增加呈现先降后增的趋势;随润滑油运行里程数的增加,润滑油的摩擦因数增大,导致试验钢球的磨损量也增加;抗磨添加剂对不同服役阶段的润滑油的抗磨性能影响程度不同,在磨合磨损期和正常磨损期,加入抗磨添加剂后并不能改善润滑油的抗磨性能,而在异常磨损期,抗磨添加剂的加入可较好地改善润滑油的抗磨性能。     

Development and testing of nano particulate lubricant for worm gear application

Bio-degradable lubricants are an attractive alternative for the mineral based and synthetic based lubricants. Bio-degradable lubricants are environmental-friendly and non-toxic. The present study deals with the tribological investigation of bio-degradable nano lubricants for worm gear applications. Nano additives like CuO and TiO₂ were used. Bio-degradable oils like palm oil and sunflower oil were used as base oils. The nano lubricants were prepared by adding two nano additives and two bio-degradable oils each of 0.1 % and 0.2 % weight composition. Friction and wear characteristics were tested on pin-on-disc tribometer under varying load conditions. Extreme pressure tests for nano lubricants were carried out using four ball tester. The wear surface obtained was analyzed using scanning electron microscopy (SEM) and energy dispersive spectroscopy. From the tests conducted, it was found that the addition of nano additives in biodegradable oils reduced the friction co-efficient and wear rate to a considerable extent.

     

Friction and wear behavior of thioether hydroxy vegetable oil

This work describes the tribochemical evaluation of vegetable oil based antiwear additive obtained through chemical modification. The Sulfur was incorporated using a chemical reaction of epoxidized vegetable oil and common thiols, resulting in formation of a hydroxy thioether derivative of vegetable oils. The synthesis retains the vegetable oil structure, eliminates poly-unsaturation in the molecule, and adds polar functional groups that significantly improve adsorption on metal surfaces. These additives are obtained by chemical modification of oils originated from natural resources. The tribochemical behavior of sulfur incorporated vegetable oil was studied by measuring friction coefficient using ball-on-disk configuration and wear scar diameter using four-ball configuration. Comparative tests with commercial antiwear additives demonstrate the effectiveness of these derivatives. The derivatives were found useful as agriculturally based antiwear additives for lubricant applications.     

润滑油纳米抗磨添加剂研究现状

介绍了润滑油纳米抗磨添加剂的研究热点和主要类型，分析了纳米添加剂对润滑油摩擦学特性改善的机理，总结了纳米添加剂的制备过程中提高其分散性的表面处理方法，并提出了润滑油纳米添加剂目前存在的问题及其发展方向。