Abstract:
A galling-resistant threaded tubular component for drilling or operating hydrocarbon wells has at one of its ends (1; 2) a threaded zone (3; 4) produced on its external or internal peripheral surface depending on whether the threaded end is male or female in type, with at least one portion of the threaded zone (3; 4) being coated with a dry film with a crystalline structure with a high specific surface area principally constituted by one or more mineral salts which are not reactive towards metals. It also concerns a process for coating such a component using a dry mineral film with a crystalline structure having a high specific surface area principally constituted by one or more mineral salts which are not reactive towards metals.
Abstract:
Antimicrobial compositions and methods are disclosed. The antimicrobial compositions are particularly useful in providing antimicrobial capability to a wide-range of medical devices. In one aspect, the invention relates to a mild solvent coating using acrylate-type mild solution coating. These compositions include rheological modifiers as necessary. The compositions also include antimicrobial agents, which may be selected from a wide array of agents. Representative antimicrobial agents include cetyl pyridium chloride, cetrimide, alexidine, chlorexidine diacetate, benzalkonium chloride, and o-phthalaldehyde. Additionally, the compositions comprise one or more suitable mild solvents, such as a low molecular weight alcohol, alkane, ketone, and combinations thereof.
Abstract:
The present invention relates to the machine buiding industry and it is used for coating of friction surfaces by triboceramics to decrease wear and to reduce the friction coefficient. The triboceramic compound contains oxides - magnesium oxide MgO, silica SiO 2 , alumine Al 2 O 3 , calcium oxide CaO, ferric oxide Fe 2 O 3 , being in the chemical composition of serpentine and talc, the natural and/or synthesized heat unprocessed and/or dehydrated minerals - serpentine, talc, clinochlore, magnesite, quartz and aluminium hydroxide are introduced forming a mixture with the following composition of oxides, in mass %: SiO 2 -46-54; MgO - 26-32, Al2O3- 2-5; Fe 2 O 3 - 1,0-1,5; CaO - 0,1-0,3, water H 2 O - 5 or less.
Abstract translation:本发明涉及机械制造工业,并且用于通过三元摩擦来涂覆摩擦表面以减少磨损并降低摩擦系数。 三菱陶瓷化合物包含氧化物 - 氧化镁MgO,二氧化硅SiO 2,铝Al 2 O 3,氧化钙CaO,氧化铁Fe 2 O 3,以蛇纹石和滑石的化学组成,天然和/或合成的热未加工和/或脱水的矿物 - 蛇纹石, 引入滑石,氯仿,菱镁矿,石英和氢氧化铝,形成具有以下组成的氧化物的混合物,质量%:SiO 2 -46-54; MgO-26-32,Al2O3-2-5; Fe2O3 - 1,0-1,5; CaO-0,1-0,3,水H 2 O -5以下。
Abstract:
The invention relates to thermally conductive greases that may contain carrier oil(s), dispersant(s), and thermally conductive particles, wherein the thermally conductive particles are a mixture of at least three distributions of thermally conductive particles, each of the at least three distributions of thermally conductive particles having an average (D 50 ) particle size which differs from the other average particle sizes by at least a factor of 5.
Abstract:
A lubrication system having an oil filter modified to replace or supplement the performance of lubricant additives that may be used within an internal combustion engine to increase the performance of a lubricant is described. The formulation of the lubricant is changed in accordance with the chemicals placed in the oil filter. For example, when the oil filter contains a strong base, the lubricant concentration of detergent will decrease, in some cases to zero, while the dispersant concentration in the lubricant will increase. The dispersant is the ideal weak base to neutralize combustion acid at the piston ring zone, carry the resultant weak base- combustion acid complex to the strong base in the oil filter, undergo ion exchange with the strong base, immobilize the acid in the oil filter and recycle the dispersant back to the piston ring zone for reuse as an acid neutralization agent. The reduction or elimination of detergent from the lubricant will reduce the fouling of the emission filter and of deposit formation on engine parts such as the piston. The oil filter may also contain an additive which is slowly released into the lubricant. For example, a ZnDDP anti-wear additive may be slowly released from the oil filter to the lubricant. Because the ZnDDP has low molecular weight alkyl groups it has limited solubility in the lubricant. The rate of release is limited by the equilibrium concentration of the additive in the lubricant. As a result, a relatively constant concentration of the additive may be maintained in the lubricant. The resultant closed system allows the oil drain intervals to be significantly extended.
Abstract:
An additive composition containing an antioxidant and a dispersant that reduces the soot content in lubricating oil in an engine and/or the emission of an engine. Further, a process for employing the additive composition to decrease the amount of soot in the lubricating oil of an engine and/or decrease the emissions from an engine.
Abstract:
A lubricating agent which comprises a phosphate salt (A) containing at least one divalent or trivalent metal selected from the group consisting of Zn, Fe, Mn, Ni, Co, Ca, Mg and Al, a dispersant (B), and at least one lubricant (C) selected from the group consisting of a wax and a metal salt of a fatty acid. The lubricating agent is an aqueous agent and can be used for forming a lubricating coating film suitable for a plastic working, such as forging, wire drawing or pipe drawing, of a metal material such as steel, stainless steel, titanium or aluminum, without a chemical treatment of the metal material.
Abstract:
An aqueous lubricant for use in plastic working of a metallic material which comprises (A) a water soluble inorganic salt and (B) a wax, wherein the components are dissolved or dispersed in water, and wherein a solid concentration ratio (weight ratio) (B)/(A) is 0.3 to 1.5; and a method for forming a lubricant film, characterized in that a lubricant film is formed by applying the aqueous lubricant, preferably in a dried weight of 0.5 to 40 g/m , on the surface of a metallic material having no chemical film formed thereon, followed by drying. The aqueous lubricant preferably further comprises (C) a metal salt of a fatty acid in a solid concentration ratio (C)/(A) of 0.01 to 0.4. The water soluble inorganic salt(A) is preferably selected from among a sulfate, a silicate, a borate, a molybdate and a tungstate. The wax is preferably a natural wax or a synthetic wax which is dispersed in water and has a melting point of 70 to 150 DEG . The metal salt of a fatty acid (C) is preferably obtained through reacting a saturated fatty acid having 12 to 26 carbon atoms with a metal selected from among zinc, calcium, barium, aluminum, magnesium and lithium. The aqueous lubricant can be used for imparting excellent bubricity with ease to the surface of a metal having no chemical film formed thereon.
Abstract:
An aqueous lubricant for use in plastic working of a metallic material which comprises (A) a water soluble inorganic salt, (B) a lubricating agent selected from molybdenum disulfide and graphite and (C) a wax, wherein the components are dissolved or dispersed in water, and wherein a solid concentration ratio (weight ratio) (B)/(A) is 1.0 to 5.0 and (C)/(A) is 0.1 to 1.0; and a method of lubricant film processing of a metallic material, characterized in that a lubricant film is formed by applying the aqueous lubricant in a dried weight of 0.5 to 40 g/m on a clarified metal material, followed by drying. The water soluble inorganic salt(A) is preferably selected from the group consisting of a sulfate, a silicate, a borate, a molybdate and a tungstate. The wax (C) is preferably a natural wax or a synthetic wax which is dispersed in water and has a melting point of 70 to 150 DEG . The aqueous lubricant can be used for imparting excellent bubricity with ease to the surface of a metal having no chemical film formed thereon.
Abstract translation:一种用于金属材料的塑性加工的水性润滑剂,其包含(A)水溶性无机盐,(B)选自二硫化钼和石墨的润滑剂和(C)蜡,其中所述组分溶解或分散在 水,固体成分浓度比(重量比)(B)/(A)为1.0〜5.0,(C)/(A)为0.1〜1.0; 以及金属材料的润滑剂膜处理方法,其特征在于,通过在澄清的金属材料上施加0.5〜40g / m 2的干重量的水性润滑剂,然后干燥而形成润滑剂膜。 水溶性无机盐(A)优选选自硫酸盐,硅酸盐,硼酸盐,钼酸盐和钨酸盐。 蜡(C)优选为分散在水中,熔点为70〜150℃的天然蜡或合成蜡。 水性润滑剂可以用于在其上形成有化学膜的金属的表面上容易地赋予优异的浸渍性。