Abstract:
The invention relates to pistons for internal combustion engines having a skirt coating consisting of a wear-resistant inner layer consisting of a polymer matrix having ceramic particles, aramide fibres and/or carbon fibres dispersed therein and an outer layer consisting of a polymer matrix having solid lubricants dispersed therein.
Abstract:
An electric submersible motor is provided that includes a plurality of rotors and bearings mounted on a shaft, and a stator external to said rotors. A running clearance is located between an inner diameter of the stator and external diameter of the rotors, and includes a lubricating oil that includes a base hydrocarbon oil and a plurality of nanoparticles. Also provided is an improved lubricant oil and method of preparation thereof are provided. The lubricant oil includes a hydrocarbon containing base oil and a plurality of nanoparticles. The nanoparticles may be present in an amount up to 30% by volume.
Abstract:
An anti-seize composition includes lubricating solids and at least one of a material selected from a grease and an oil. The lubricating solids include at least 15 weight percent of nano-sized lubricating solid particles. The nano-sized lubricating solid particles each have at least one dimension, on average, of less than 500 nm.
Abstract:
A grease includes: (A) 2 to 50 weight %, based on the weight of the grease, of a polyorganosiloxane having an average, per molecule, of at least one silicon-bonded hydrocarbonoxy-functional group; and (B) 50 to 98 weight %, based on the weight of the grease, of at least one thermally conductive filler. The grease may be used as a thermal interface material for dissipating heat from electronic devices.
Abstract:
A threaded joint for steel pipes for use in an oil well which has improved galling resistance and which is protected from rusting comprises a pin and a box each having a contact surface including a threaded portion and an unthreaded metal contact portion. The contact surface of at least one of the pin and the box has a lower layer of a viscous liquid or semisolid lubricating coating comprising at least wax and a fatty acid alkaline earth metal salt and not containing a harmful heavy metal such as lead and an upper layer of a dry solid coating formed from an aqueous resin coating composition, an organic solvent type coating composition, or an ultraviolet curing coating composition.
Abstract:
Disclosed is a flame-retardant lubricant composition for cold working which contains no chlorine compound and exhibits good lubricity and welding resistance. Also disclosed is a cold working method using such a lubricant composition. Specifically disclosed is a lubricant composition for cold working which contains, in a lubricant base oil, at least one carbonate selected from alkali metal carbonates and alkaline earth metal carbonates, and at least one hydroxide selected from alkali metal hydroxides and alkaline earth metal hydroxides. This lubricant composition contains no chlorine compound. The carbonate content in the composition is not less than 10% by mass and less than 100% by mass, and the hydroxide content is more than 0 part by mass and not more than 5 parts by mass per 100 parts by mass of the carbonate.
Abstract:
A method of lubricating a moving surface is herein described wherein the lubricant composition contains a fatty acid, a neutralization agent, a pH buffer, and a carrier. Also described are compositions in both concentrate and dilute form. The compositions may also comprise additional functional ingredients.
Abstract:
The invention relates to mechanical engineering and can be used for friction assemblies. The aim of the invention is to develop a method for forming an antifriction coating for contacting sliding surfaces, which increases the constancy, resistance and life time of said antifriction coating when subjected to normal and intensive mechanical and temperature actions and to ensure a high wearability of the surfaces. The inventive method consists in placing a mechanically pre-activated pulverized mixture of a material and a binding agent, which form the antifriction coating, between the sliding surfaces. Compositions of natural minerals containing in mass %: Mg3Si2O5 (OH)4 - 10-60, MgFe2O4 - 10-60, MoS2 - 1-20, and of associated rare-earth elements - 0,1 - 10, H2O - not more than 5, are used as the material forming the antifriction coating. The mechanical pre-activation can be carried out with a pressure pulsation in a range of 0.01 - 10 MPa at a temperature of 100-200 DEG C.
Abstract translation:本发明涉及机械工程,可用于摩擦组件。 本发明的目的是开发一种用于形成用于接触滑动表面的抗磨涂层的方法,当受到正常和强烈的机械和温度作用时,其增加了所述抗磨涂层的恒定性,耐久性和使用寿命,并确保高耐磨性 表面。 本发明的方法包括在滑动表面之间放置形成减摩涂层的材料和粘合剂的机械预活化粉碎混合物。 含有质量%的天然矿物组成:Mg 3 Si 2 O 5(OH)4-10-60,MgFe2O4-10-60,MoS2-1-20和相关稀土元素--0.1-10,H 2 O - 不大于 5用作形成抗磨涂层的材料。 机械预激活可以在100-200℃的温度下以0.01-10MPa的压力脉动进行。