48results about How to "Avoid Surface Corrosion" patented technology

Multifunction production equipment enabling a plurality of processes in which deposition of reaction products on the inner wall of the processing chamber of equipment for producing a semiconductor or a flat-plate display, metal contamination due to corrosion of the inner wall, or the like, and fluctuation of the process due to discharged gas are suppressed, and a protective film structure for use therein. On the surface of a metal material, a first coating layer having an oxide coating of 1μ thick or less formed as an underlying layer by direct oxidation of a parent material, and a second coating layer of about 200 μm thick are formed. With such an arrangement, corrosion resistance against irradiation with ions or radicals can be imparted to a second layer protective film, and the effect of a protective layer for preventing corrosion of the surface of parent metal caused by diffusing molecules or ions into the second layer protective film can be imparted to the first layer oxide film. Consequently, contamination of the substrate with metals generated from each metal member and the inner surface of the process chamber is reduced, and stripping of the second layer protective film due to lowering in adhesion of the second layer protective film due to corrosion of the interface between the parent material and the second layer protective film can be suppressed.

Disclosed herein are the methods of using di-cationic or di-anionic compounds, which are derived from primary amine through an aza-Michael addition with an activated olefin, in a corrosion control composition to mitigate corrosion of a surface in a water system. The disclosed methods or compositions are found to be more effective than those methods or compositions including commonly used single quaternary compounds for mitigating corrosion for a metal surface in water systems.

The invention provides a novel liquid nitrogen cold assembly device, relating to the technical field of installation equipment for interference fit parts. In the invention, on the premise of ensuring the accurate installation of shafts, superficial corrosion effect of liquid nitrogen on the shafts is effectively reduced so as to avoid frosting, thereby ensuring the cold assembly quality of the interference fit parts. The liquid nitrogen cold assembly device provided by the invention comprises a nitrogen tank and a heat insulation cooling tank, and is characterized in that an evaporator is arranged in the heat insulation cooling tank; and the nitrogen tank is connected with the evaporator through a pipeline.

A method for inhibiting corrosion comprises the steps of providing a fluid; adding a corrosion inhibitor comprising at least one amphiphilic chemical to the fluid; and monitoring micelles presence in the fluid. A method for determining the amount of corrosion inhibitor that is sufficient to inhibit corrosion, a method for monitoring the activity of an amphiphilic chemical and a system for inhibiting corrosion in a conduit are also disclosed.

The invention discloses a stacked combined type heavy hammer sheet and a manufacturing method thereof and belongs to the technical field of hammer manufacturing. The heavy hammer sheet comprises heavyhammer sheet bodies, wherein a square groove is formed in an upper surface of each heavy hammer sheet body, a connecting rod mounting groove is formed in the middle of each heavy hammer sheet body, the multiple heavy hammer sheet bodies are arranged in an overlapped mode, butt joint pieces are symmetrically mounted on two sides of the connecting rod mounting groove in the middle of each heavy hammer sheet body, and the butt joint pieces are symmetrically distributed with the circle center point of each heavy hammer sheet body as the center. The stacked combined type heavy hammer sheet is advantaged in that the whole combined heavy hammer sheet is integrated into a whole, overall stability is improved, after the heavy hammer sheets are combined, the combined heavy hammer sheets are arranged on the cable, the heavy hammer sheet is convenient to assemble and disassemble, high in bonding strength, high in use stability and high in practicability, shock resistance is improved, use safety is improved, compactness and waterproof performance of a coating can be effectively improved, connecting friction force is increased when the square connecting rod mounting groove polished by a file ismounted, and mounting stability is improved.

The invention discloses a water-based aluminum alloy cutting fluid, which is made from the following raw materials in parts by weight: 4-5 parts of octocapric acid, 2-3 parts of boric acid, 10-12 parts of glycerin, 6-9 parts of glycerin monostearate, 2-3 parts of polyisobutene, 10-12 parts of spathulenol, 1-2 parts of diisopropyl naphthalene sulfonate, 1-2 parts of carboxymethylcellulose, 4-5 parts of diethyl carbitol, 6-8 parts of assistant and 200 parts of water. The cutting fluid disclosed by the invention is good in cleaning property, good in lubricating property and capable of overcoming the defects of easy deterioration and smelliness and short service life of the emulsified cutting fluid and greatly prolonging the service lives of machinery and the cutting fluid, and the cooling performance is good, so that the cutting fluid is suitable for processing non-ferrous metals and ferrous metals and is especially suitable for processing aluminum products to prevent the surface corrosion problem of the aluminum products.

The invention discloses a bidirectional new energy automobile charging pile with charging and discharging functions. The charging pile structurally comprises a base, a machine body, an operation table, a heat dissipation opening and a charging head, the top face of the base is welded to the bottom face of the machine body, the back face of the operation table is fixedly installed on the front faceof the machine body, the outer layer of the heat dissipation opening is embedded into the front face of the machine body, and the left side of the charging head and the right side of the machine bodyare overlapped. A cable is pulled out during charging, the cable can be automatically collected into the machine body through a cable winder after the cable is loosened when charging is not needed, surface corrosion caused by wind and rain for a long time is avoided, the short-circuit phenomenon caused by the combined action of corrosion and high temperature is reduced, meanwhile, when short circuit occurs, generated high current can be quickly sensed by a high current circuit breaker, and the circuit is quickly disconnected, so that the generated high current is prevented from impacting a vehicle battery, and the use is safer.

The current invention relates to a micro-encapsulted, volatile vapor corrosion inhibitor (VCI), and method for the use of same. More particularly, it relates to a fluid composition, and microencapsulation of the fluid composition, that inhibits corrosion and tarnishing and that may be relatively non-toxic. The VCI is intended to be employed in varying concentrations depending on the intended application and deployed via microcapsules. The microcapsules may be adapted to release the VCI over time, or all at once. To effect this, the microcapsules may be adapted to be breached at varying times or at the same time. By adapting the microcapsules, or the method of breaching the microcapsules, the rate at which the VCI is released may be controlled.

A polishing apparatus and exception handling method thereof is disclosed, the exception handling method of polishing apparatus includes: sending an alarm signal when an alarm is generated because of an exception during polishing; and processing a wafer in the polishing apparatus with organic acid solution according to the received alarm signal. The method and apparatus prevent the metal material from corrosion which causes device failure, when there is an alarm generated because of an exception which stops the apparatus during polishing.

The current invention relates to a micro-encapsulated, volatile vapor corrosion inhibitor (VCI), and method for the use of same. More particularly, it relates to a fluid composition, and microencapsulation of the fluid composition, that inhibits corrosion and tarnishing and that may be relatively non-toxic. The VCI is intended to be employed in varying concentrations depending on the intended application and deployed via microcapsules. The microcapsules may be adapted to release the VCI over time, or all at once. To effect this, the microcapsules may be adapted to be breached at varying times or at the same time. By adapting the microcapsules, or the method of breaching the microcapsules, the rate at which the VCI is released may be controlled.

The invention discloses a multifunctional nontoxic environment-friendly water-based paint and a preparation method thereof. The paint consists of the following compositions in proportion: 20-50 percent of 209 resin, 4-20 percent of phosphoric acid, 0.5-2.0 percent of zinc dihydrogen phosphate, 2-10 percent of tartaric acid, 2-10 percent of azo dyes, 1.5-2.2 percent of ultrafine iron oxide pigment, and the rest amount of water. The preparation process comprises the steps that: 1. a large part of 209 resin and phosphoric acid are stirred for 2.0-2.5 hours at a constant temperature of 28-32 DEG C; 2. the tartaric acid, zinc dihydrogen phosphate and hot water with the temperature of 70-90 DEG C are sufficiently stirred; 3. the azo dyes, ultrafine iron oxide pigment and a small part of 209 resin are stirred sufficiently and uniformly; 4. the two liquids are added to the solution in the first step to be continuously stirred for 1.0-1.2 hours; and 5. the mixed liquid is roll-pressed by a three-roll mill for 2.0-2.5 hours. The water-based paint provided by the invention is nontoxic, free of pungent odor, strong in antirust ability, and short in curing time, cannot cause the rusty phenomenon during the curing process, can prevent strong solvent from dissolving, and has good de-rusting performance and chemical medium resistance.

The invention relates to the technical field of aluminum alloy surface treatment, in particular to an aluminum alloy surface micro-arc oxidation treatment technology. The technology comprises the following steps that surface pretreatment is performed; a micro-arc oxidation electrolyte is prepared; micro-arc oxidation is performed; modification treatment is performed on SiO2 nano particles; and a super-hydrophobic coating is prepared. According to the technology, the surface of the aluminum alloy is treated through micro-arc oxidation, the micro-arc oxidation coating with good stability and functionality is favorably constructed, the modified SiO2 nano particles are soaked in the surface of the aluminum alloy micro-arc oxidation coating, part of air can be sealed in a porous structure of the micro-arc oxidation coating to form an effective air cushion, regular granular bulges are formed outside the aluminum alloy, the surface roughness is increased, the super-hydrophobic coating is formed, and the corrosion resistance of the aluminum alloy is improved.

The present disclosure provides a method for preventing corrosion capable of sufficiently protecting a surface of an aluminum-based member (in particular, a contact surface with a gasket) from corrosion, particularly when the surface of the aluminum-based member is sealed by the gasket. The method for preventing corrosion of a surface of an aluminum-based member constituting a structure that sandwiches the gasket together with another member in a press contact state, wherein a surfactant is made to adhere to the surface of the aluminum-based member.

The invention relates to the technical field of washing machines, and discloses an impeller, an impeller assembly and a washing machine. A protruding part is formed on one side of the impeller, a cavity is formed in the other side of the impeller, and a mounting part is arranged in the cavity; in the height direction of the impeller, a distance between the bottom end surface of the mounting part and the plane where the opening at the lower end of the cavity is located is kept, a water through hole is not formed in the side cavity wall of the cavity, and a sealing structure used for providing aseal for the top end of the cavity is arranged at the top end of the protruding part, so that a sealed pressure air cavity is formed by means of the seal provided by the sealing structure and a waterseal spilling over the opening at the lower end of the cavity after the impeller is mounted; water cannot go into the mounting part and soak the mounting part, so that the situation that the mountingpart is in contact with water and clothing debris is effectively avoided, and the problems are avoided that dirt forms below the impeller and the surface of a metal insert in the mounting part is corroded.

The invention discloses a radiator for a notebook computer. The radiator includes a housing, a U-shaped groove, a fixing frame and a single-chip microcomputer. Fixing frames are arranged on the two sides of the top end in the shell. Storage batteries are mounted at the top ends of the fixing frames; a support is arranged in the middle of the interior of the shell. fans are mounted on two sides ofone end of the bracket; a temperature sensor is mounted in the middle of the top end of the bracket; a power adapter is installed at the top end of one side of the interior of the shell, USB interfaces are formed in the two ends of one side of the interior of the shell, supporting plates are arranged on the two sides of the bottom end of the shell, a control panel is installed in the middle of thebottom end of the shell, and a single-chip microcomputer is arranged in the control panel. The suction cups are evenly arranged at the bottom end of the base and adsorb a table top, and therefore thestability of the device is improved.

This steel material has a component composition comprising, in mass%, C: 0.03-0.18%, Si: 0.03-1.50%, Mn: 0.1-2.0%, P: 0.025% or less, S: 0.010% or less, Al: 0.015-0.049%, N: 0.008% or less, W: 0.005-0.5%, and Nd: 0.0001-0.010%, with the remainder being Fe and unavoidable impurities, wherein the dislocation density alpha of the steel material is set to within a range that satisfies formula (1), thereby obtaining a steel material for a crude oil tank that has excellent general corrosion resistance in the upper plate of a crude oil tank such as a tanker oil tank unit and that also has excellent local corrosion resistance in the bottom plate of the crude oil tank. Formula (1): alpha(/m2)<={1020*[%W]*[%Nd]}/{5*([%Al]-0.01)}, where [%M] is the content (mass%) of an element M in the steel material.