5269results about How to "Prevent rust" patented technology

A lamp includes an outer shell having heat conductivity, a base provided in the outer shell, and a cover provided in the outer shell. The outer shell has a light source support, and a heat radiating surface exposed to the outside of the outer shell. The light source support is formed integral with the heat radiating surface. A light source is supported on the light source support. The light source is heated during lighting, and thermally connected to the light source support. The light source is covered with the cover.

The invention relates to a self-greasing paint which can prevent screw thread from sticking and wearing and a preparation method thereof. The self-greasing paint which can prevent screw thread from sticking and wearing is a two-component self-greasing paint that consists of a component A and a component B. Component A consists of raw materials with weight proportion of 40-90 percent of film-forming material, 5-60 percent of solid greasing material, 0-10 percent of additive, 0-50 percent of solvent, 0-10 percent of color paint and 0-10 percent of filling while component B consists of raw materials with weight proportion of 50-100 percent of curing agent and 0-50 percent of solvent. The weight ratio of component A and component B is 1 to 0.1-5. The friction coefficient of the coat formed by the paint is low and the paint has self greasing function, anti-sticking and wearing resistant performances; the invention reduces and even avoids the use of grease and solves pollution problem caused by grease. The self-greasing paint is applicable to various mechanical parts such as bolt, screw, etc., in particular to screw threads of oil pipe, cashing and drill rod, etc. that are special for oil industry.

The invention discloses a water-soluble total-synthesis metal working fluid and application thereof. The working fluid is prepared from the following raw materials in percentage by weight: 1wt%-30wt% of a lubricant, 1wt%-40wt% of a corrosion inhibitor, 1wt%-40wt% of organic amine, 1wt%-20wt% of a cleaning agent, 1wt%-20wt% of a coupling agent, 0.5wt%-5wt% of an antifoaming agent and the balance of water. The working fluid can form water-based steam with anti-rust property in an induction manner in the use procedure, so that the problem of rusting caused by steam which is easily generated by a closed machine tool is solved, and therefore, the working fluid is suitable for a high-precision machine tool, especially a numerical control machine tool with a closed structure.

The present invention relates to a hydraulic-transmission- braking three-use lubricating oil composition, which is prepared by mixing the following raw materials, by weight, 85-98% of high viscosity index base oil, 0.1-5% of an extreme pressure wear resistance agent, 0.1-4% of an antioxidant, 0.1-3% of a metal deactivator/antirust agent, 0.1-5% of a friction modifier, and 0.1-2% of a dispersing agent. The hydraulic-transmission- braking three-use lubricating oil composition has beneficial effects of good low temperature fluidity, friction reduction, wear resistance, corrosion resistance, rust resistance, emulsification resistance and foaming resistance, and can meet requirements of universal hydraulic transmission oil used by large-medium-sized tractors and construction machinery so as to achieve complete lubricating protection on hydraulic parts, transmission parts, gear parts, power output parts and braking parts, such that a long service life is provided, equipment operation stability is easily improved, and energy saving and consumption reduction are provided.

The invention discloses a pre-buried construction method for high-precision foundation bolts. The method includes the following steps that (a), construction preparation is performed; (b), a control net is established; (c), a positioning clamp and a positioning control plate are manufactured; (d), foundation steel bars are buried in advance; (e), the positioning clamp is installed; (f), the foundation bolts are installed; (g), the foundation bolts are reinforced and protected; (h), concrete pouring is performed; (i), the clamp is dismantled; (j) acceptance inspection and handover are performed to finish the pre-buried construction. The manufactured high-precision positioning clamp is adopted for performing clustering control over the pre-buried foundation bolts of each set of equipment foundations, elastic clamping tools are arranged on the outer sides of the foundation bolts, supporting legs of the elastic clamping tools are embedded into clamping holes in the positioning clamp, and the elastic clamping tools are clamped on the positioning clamp of the foundation bolts, so that the foundation bolts are further reinforced and prevented from loosening. The pre-buried construction method has the effects of being reliable in technology, high in construction precision, easy to understand and master and convenient to operate, and meanwhile is short in construction period and low in cost.

The grasping apparatus includes a grasping portion for grasping a workpiece. This grasping portion has i) pawl portions having squeezing portions that squeeze the workpiece, and ii) contact portions, each of which has an inner bag made of elastic material, and a granular substance that is filled in the inner bag. The contact portions are attached to portions of the squeezing portions that contact the workpiece, and harden the granular substance while keeping it in an appropriate shape by increasing a volume ratio of the granular substance to an inner volume of the inner bags. Retaining portions that have concavo-convex shapes are formed on the attaching surfaces that are portions of the squeezing portions that the contact portions attach to.

The invention discloses an aluminum-magnesium alloy cutting fluid which consists of the following components in percentage by weight: 5-10 percent of extreme pressure anti-wear additive, 10-30 percent of lubricating agent, 10-20 percent of anti-rusting agent, 1-3 percent of pH regulator, 0-2 percent of hard water resisting agent, 0-1 percent of settling agent, 0.1-0.5 percent of defoaming agent, 1-5 percent of sterilizing agent and the balance of water. According to the aluminum-magnesium alloy cutting fluid, excellent lubricating and wear resisting performances, cleaning and cooling performance and rust and corrosion resisting performances are obtained, thus cutting bumps can be avoided, a cutter is effectively protected and the processing quality is improved; more heat generated in the processing process is taken away, so that the temperature of the processing surface is reduced and the defects of the curling and the deformation of workpieces caused by high temperature, flammabilityof scrap magnesium at high temperature and the like are effectively overcome; and a processing technique is simplified, and thus the processing period is shortened and the production efficiency is increased.

The invention relates to a migration-type organic reinforced concrete anti-corrosion admixture which is prepared by mixing organic carboxylic acid and organic amine in the following percentage by weight: 40-80% of the organic carboxylic acid and 20-60% of the organic amine; adding the mixture into water; heating to 60-70 DEG C; and stirring the mixture for reaction for 1-2 hours to obtain the migration-type organic reinforced concrete anti-corrosion admixture. The anti-corrosion admixture does not contain nitrite and inorganic base and can prevent damage on reinforcing steel bar passive films caused by chloride ions, thus preventing corrosion.

A decorative cap and nut for securing a toilet base to a floor includes a top substantially disc-shaped member having an upper disc surface and a lower disc surface. The diameter of said disc-shaped member is substantially greater than the thickness thereof so as to lie substantially flush with the toilet base. A coaxial cylindrically shaped stem extends vertically downwardly from the top and is connected to the lower disc surface. The stem includes an internal thread adapted to be threaded onto a floor bolt that extends upwardly through an aperture in the toilet base. A slot in the upper disc surface can be engaged by a tool for rotating the top and an O-ring located on the under disc surface seals the disc-shaped member to the upper surface of the toilet base. A plug fits within the slot to hide the same. The stem and top can be integrally formed in a single piece or can be made of more than one piece joined together.

A corrosion-inhibiting and scale-inhibiting agent for treating the water used as circulated cooling water or for boiler is prepared from liquid-state dielectric hydrophobic substance, oil-soluble corrosion inhibitor, water-soluble disperser, and composite sensitive emulsifier. Its advantages are high effect and low dosage.

The invention which belongs to the field of civil engineering equipment relates to a full-automatic, digital and large frozen soil direct shear apparatus. The large frozen soil direct shear apparatus which comprises a shear box, a refrigeration system of an upper shear box, a refrigeration system of a lower shear box, a vertical servo loading and monitoring system, a horizontal servo loading and monitoring system, and a measurement and control system is to determine the shear strength of the freeze-thaw interface of the frozen soil or determine the shear strength of full frozen soil and full thawy soil. The size of a frozen soil sample in the embodiment of the invention is 305mm*305mm*200mm, static force and a layered compacting method are adopted to prepare remolded soil samples of different initial water contents and dry densities for shear tests; temperature control systems of the upper shear box and the lower shear box are adjusted to control the temperatures of soils in the shearboxes to guarantee the shear plane to be superposed with the freeze-thaw interface of the frozen soil sample. The direct shear apparatus of the present invention solves problems that the difficulty of testing the shear strength of the freeze-thaw interface is large, the shear tests of coarse grain soil are difficult and the like and provides reasonable design parameters for civil engineering and traffic engineering in cold or highly cold regions.

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.

The invention relates to a method for producing color-coated steel sheet for a structure. The method comprises the following steps of: smelting, namely desulfurizing by molten iron, smelting by a converter, casting continuously to form a blank and performing hot rolling; performing acid washing; performing cold milling; annealing continuously; performing hot dipping on aluminum and zinc; and polishing, straightening, performing color coating and packaging for later use. In the method, the yield strength RP 0.2 (or ReH) is between 550 and 600 MPa; the tensile strength Rm is between 560 and 610MPa; and the percentage elongation after break A80 mm is more than or equal to 6 percent. A neutral salt mist test is performed for 1,200 hours, a coating does not have bubbling and corrosion phenomena. At present, the annealed color-coated plate of which the metallographic structure is ferrite and pearlite or the ferrite and free cementite or the ferrite and the pearlite and less free cementite cannot achieve the effect, and the production cost can be reduced by 10 to 15 percent. By the method, special occasions which have high-yield strength and are used for cooling chambers of automobiles,arch coverings and the like can be met, and a process is simple and easy to implement.

The invention relates to a surface protection technology of a neodymium iron boron magnet material, concretely relates to a neodymium iron boron magnet material surface phosphating treatment and an organic coating double layers protection method. The method comprises the following steps: removing oil on neodymium iron boron, removing rust, and then immersing neodymium iron boron in a phosphating liquid for 5-15 minutes to generate a layer of phosphating coat, washing and drying, and then coating a layer of organic paint to form an organic coating. The method of the invention aims at the problems of complex, rigorous pre-treatment and poor anti-corrosive property in a surface protection method during electroplating and chemical plating. According to the invention, the surface treatment technology of phosphatization treatment and organic coating double layers protection can be used, the technology is simple without complex pre-treatment, under the prerequisite that the combination force of the coating and the matrix and the magnetic property are not be influenced, the neutral salt spray corrosion resistant performance of the coating can be largely enhanced.

The invention relates to a rolling oil composition used for a twelve-high reversing cluster mill; the rolling oil composition belongs to the field of metallurgical steel rolling oil products, and comprises the components according to weight percent as follows: 60-70 percent of compound neopentyl polyol ester, 14-28 percent of mineral oil, 1-5 percent of phosphorus-containing extreme-pressure and anti-wear agent, 1-5 percent of sulfur-containing extreme-pressure and anti-wear agent, 2-12 percent of compound emulsifier, 1-3 percent of anti-rust agent, 1-3 percent of antioxidant and 0.01-0.5 percent of defoamer; the rolling oil composition takes the compound neopentyl polyol ester synthetic ester with excellent lubricating performance as the lubricating basic component; an oiliness agent main body with high lubricating performance and high extreme-pressure and anti-wear performance is composed by adding the scientific components of the phosphorus-containing and the sulfur-containing extreme-pressure and anti-wear agents; and the anti-rust performance and the emulsion stability are ensured by adopting the mineral oil, the anti-rust oil, the emulsifier and the antioxidant with the appropriate proportion for coordination, thereby creatively solving the contradiction between the lubricating performance and the detergence, ensuring the requirements on the lubricating performance of the quality when rolling steel plates with thin specifications, protecting the lubricating requirements of back-up bearings and ensuring the volatility and the annealing detergence under the cleaning-free condition.

The present invention relates to a wafer packaging with array pads and its processing method. The wafer packaging mainly includes even numbers of wire-bonded pads, a wafer, even numbers of welding line and a sealing colloid. An upper and a lower combination layers are separately formed on cores of the wire-bonded pads, in which materials of the cores include copper. These welding lines electric connect the wafer with the upper combination layer of the wire-bonded pads. The sealing colloid seals these welding lines, cores and upper combination layers, in which only the lower combination layers are exposed out of the sealing colloid. The present invention can solve the former rusting problem of exposed cutting surface of pins in non-external-pin wafer packaging of conductor frame substrate, and has array pads which can achieve high density of wafer packaging. The processing method of the present invention keeps using a rigid conductive mold in packaging process to carry steps of electroforming, wafer attaching, wire bonding and packaging to achieve coherence of the packaging process.

The technology described herein provides a wire and cable assembly device and associated methods for holding multiple spools of wound material, such as electrical, telephone, fiber optic cables, or the like, for selective dispensing. The technology described also provides a portable, foldable, and adaptable wire and cable assembly device to facilitate the installation of wire and cable products in a building, parking lot, or the like. The device is transportable both manually and by a means of towing.