The study of epoxidized rapeseed oil used as a potential biodegradable lubricant

The application of epoxidized rapeseed oil as a biodegradable lubricant is described. The epoxidation treatment has no adverse effect on the biodegradability of the base stock. Epoxidized rapeseed oil has superior oxidative stability compared to rapeseed oil based on the results of both oven tests and rotary oxygen bomb tests. Moreover, the oxidative stability can be dramatically promoted by the addition of a package of antioxidants. The epoxidized rapeseed oil has better friction-reducing and extreme pressure abilities according to tribological investigations. Formation of a tribopolymerization film is proposed as explanation of the tribological performance of epoxidized rapeseed oil.     

脱氮基础油的特点及应用

介绍了荆门脱氮基础油的生产工艺和质量特点，以脱氮基础油调制的汽轮机油、液压油、SF／CD通用内燃机油、GL-5车辆齿轮油等产品完全满足国家或行业标准的要求。同时还简要介绍了脱氮残渣的处理方法。     

自润滑钢板的生产

介绍了国外自润滑钢板的研究和生产工艺，自润滑钢板有机涂层的组成，以及国外自润滑钢板的生产情况，同时提出了攀钢生产自润滑钢板的建议。     

The effect of a solid additive on rolling fatigue life

Behaviour of a series of lubricant oils and the effect of a non stoichiometric inorganic compound, as solid extreme pressure additive, on rolling fatigue life are studied using the rolling four-ball accelerated service simulation test proposed by Barwell and Scott. The results show, in all tested cases, the remarkable efficacy of this type of additive. The Total Acidity Number (tan) was found to increase with performance time for the case of the base lubricant, while for the oils with additives, it remained at its constant low value. This led to a proposal of a possible mechanism of the additive performance in the rolling process.     

合成蜡的润滑性能

合成蜡能提高水基润滑剂的润滑性能,可以满足金属压力加工的润滑要求.     

低ZDDP添加量对含Mo润滑油体系摩擦性能的影响

利用FALAX四球摩擦磨损试验机和SRV振动摩擦磨损试验机考察了低ZDDP添加量对含Mo润滑油体系抗磨性、减摩性以及极压性的影响,并采用SEM、XPS分析磨斑形貌和磨痕表面元素种类、价态以及含量。结果表明,在含Mo润滑油体系中磨斑直径随ZDDP含量的降低变化不明显,而摩擦系数变化显著,PB值随ZDDP含量的降低明显下降。因此在低ZDDP含量润滑油体系中,主要是解决体系PB值降低的问题。     

API石油专用管材螺纹和螺纹脂的发展

文章介绍了石油专用管材的组成，石油螺纹分类及其密封的三种形式，叙述了石油螺纹脂的作用和发展历史，指出了石油螺纹脂要解决的问题是辅助螺纹密封，保证在一定压力和温度下不泄漏。     

Fabrication of Thick Molybdenum Disulphide Coatings by Thermal-Diffusion Synthesis

Molybdenum disulphide coatings were deposited on high-speed steel and WC/Co hard alloy substrates by thermal-diffusion synthesis. Ball-on-flat reciprocating tests demonstrated the coating friction coefficient 0.03–0.06 (200°C, air) and 0.1–0.2 (20°C, air). The coatings ensured ~50 longer lifetime of hard alloy cutting tools.     

Evaluation of sodium acetylacetonate as a synergist for arylamine antioxidants in synthetic lubricants

Differential scanning calorimetry (DSC) was employed to evaluate the performance of an ester lubricant containing sodium acetylacetonate. In the isothermal DSC oxidation test, sodium acetylacetonate is an effective synergist for arylamine antioxidant p,p′-dioctyldiphenylamine (DODPA). When combining with arylamine antioxidants, sodium acetylacetonate can also effectively reduce the increases in viscosity and acid number of the ester oil in oxidation–corrosion test. The electron paramagnetic resonance (EPR) results indicated that sodium acetylacetonate can reduce the free radical contents in the oxidized oil with arylamine antioxidants present.