23results about How to "Reduce erosion rate" patented technology

The invention provides a hyperbranched polysiloxane coating corrosion inhibitor and a preparation method thereof, a hyperbranched polysiloxane epoxy anticorrosive paint and a preparation method and application thereof. The hyperbranched polysiloxane coating corrosion inhibitor is prepared by catalytic reaction of p-dimethylaminobenzaldehyde and small molecular silane in an alcoholic solution. The coating comprises 30-50 parts of epoxy resin, 20-35 parts of a hyperbranched polysiloxane coating corrosion inhibitor, 5-10 parts of an active diluent, 2-2.5 parts of a silane coupling agent, 15-30 parts of filler, 1.5-2.5 parts of an auxiliary agent and 15-20 parts of a curing agent. Compared with the prior art, an imine group in hyperbranched polysiloxane and a metal substrate form a stable complex, the stable complex is adsorbed on the metal surface to form a protective film, the erosion rate of a corrosive medium to the metal substrate is effectively reduced, the corrosion resistance of a coating is improved, meanwhile, the coating prepared by adopting the reactive diluent is high in solid content and good in corrosion resistance, and the service life of the coating is prolonged. VOC emission in the paint film curing process is low.

The present invention relates to a housing for a compressor, the housing accommodating an impeller and allowing the impeller to rotate relative to the housing, comprising: a first intake passage guiding air in a first guiding direction; a second intake passage extending at least partially circumferentially along the housing and guiding exhaust gas in a second guiding direction, the second intake passage comprising an inlet section and an opposite outlet section, and the outlet section being positioned radially inward of the inlet section, a cross-sectional ratio between an inlet cross-sectional area of the inlet section and an outlet cross-sectional area of the outlet section is between 2 and 10, and at the outlet section, a first angle formed by the second guide direction and the radial direction is in the range of 45 to 90 degrees. The shell enables mixed gas formed by air and waste gas to generate circumferential speed, the erosion rate of the blades is reduced, and the impeller does not need to be coated with a coating. In addition, the invention also relates to a compressor and an exhaust gas recirculation system.

The utility model discloses a communication base station cabinet which effectively achieves the purpose of disguising the cabinet and comprises a cabinet body, the front side of the cabinet body is provided with a front panel, the middle part of the front panel is provided with a ventilation net, the rear side of the ventilation net is provided with a connecting cylinder, a cooling fan is arranged in the connecting cylinder, and the rear side of the cooling fan is provided with a first ventilation net. A first ventilation net is rotatably connected to the left side of the cabinet body, a second ventilation net is rotatably connected to the rear side of the connecting cylinder, a side panel capable of being turned upwards to be opened is arranged on the left side of the cabinet body, a controller fixedly connected with the cabinet body is arranged in the side panel, and a plurality of cushioning rubber strips are arranged on the rear side of the cabinet body. The base station cabinet is more attractive effectively, the function of adjusting the blowing direction is added, the waterproof effect of the cabinet body is improved, the anti-vibration capacity of the device is improved, the rainwater protection capacity of the base station cabinet is improved, and the ventilation effect in the device is improved.

A high-strength refractory material and its preparation method and application, belonging to the technical field of refractory materials, the raw materials of the refractory material include fused corundum, high-alumina bauxite clinker, metal silicon powder, anti-cracking agent, titanium aluminum carbide and titanium carbide, etc., wherein the anti-cracking agent is prepared by modifying boron phenolic resin, mesophase asphalt, artificial graphite powder and silicon carbide fiber. The refractory material of the present invention adopts metal silicon powder to improve wear resistance and oxidation resistance, titanium aluminum carbide to improve oxidation resistance, titanium carbide to improve strength, and anti-cracking agent after surface modification and film formation to greatly improve thermal shock resistance and reduce thermal expansion rate and slag erosion rate. In addition, adding titanium aluminum carbide can improve strength and thermal shock resistance to a certain extent, has good oxidation resistance, and improves erosion resistance. The refractory material can be used for high carbon steel and low carbon steel, and is particularly suitable for casting high oxygen steel, calcium treated steel and high manganese steel.

The present invention relates to a refining slag-forming agent, a preparation method and a smelting method applied to low-carbon steel wire rods. Waste slag and waste magnesium carbon bricks generated in the aluminum-killed steel refining process are used as main raw materials, which are mixed and crushed in a certain proportion to form a refining slag-forming agent that can be used for low-carbon steel wire rods and has anti-ladle erosion performance. The smelting method performs secondary deoxidation and modification on the refined slag through a reasonable feeding method, and designs a CaO-Al2O3-SiO2-MgO quaternary refining slag system with a high MgO content, which replaces the original CaO-SiO2 slag system. The present invention can not only meet the requirements of low-cost and pollution-free products, but also realize the metallurgical functions of refining rapid slag-forming, desulfurization and reducing the erosion of ladle refractory materials.

The utility model relates to the technical field of plate glass production, and discloses a novel glass melting furnace tank wall iron grate device, which comprises a tank wall brick and a cooling air pipe, an iron grate is arranged on the outer side of the tank wall brick, the iron grate is formed by cross beam flat iron and longitudinal beam flat iron in a crossing manner, a plurality of rectangular holes are formed, and the cooling air pipe is arranged in the rectangular holes. The utility model provides the novel glass melting furnace tank wall iron grate device, the novel glass melting furnace tank wall iron grate device is formed by crossing the cross beam flat iron and the longitudinal beam flat iron, a U-shaped air door opening is formed in one side, in contact with a tank wall brick, of the novel glass melting furnace tank wall iron grate device, and the glass melting furnace tank wall iron grate device is formed by controlling the included angle between the cross beam flat iron and the tank wall brick. And the cross beam flat iron is parallel and consistent with the direction of cooling air, so that the cooling air is fully contacted with the outer side of the pool wall brick, the erosion speed of the pool wall brick is slowed down, the service life of the pool wall brick is prolonged, and meanwhile, the energy loss and waste are reduced and the production cost is reduced by optimizing the air volume and the flow direction.

The present invention belongs to the technical field of sapphire crystal growth, and specifically relates to a method for controlling impurities in sapphire crystal growth and a crucible for crystal growth. A method for controlling impurities in sapphire crystal growth, comprising the following steps: removing impurities from the crucible, spraying an aluminum oxide solution on the inner wall of a molybdenum crucible, placing the crucible in a crystal growth furnace, and starting to heat up and sinter after the furnace body is sealed and cool down; growing crystals, filling aluminum oxide raw material powder into the treated crucible, and starting to heat up and melt the raw material after the furnace body is sealed, and seeding and crystal growth are performed after the raw material is melted, and after the crystal growth is completed, the crystal is cooled and taken out. The present invention mainly utilizes the reaction design and control of aluminum oxide at different temperatures, and obtains a crucible for crystal growth through a crucible removal operation, so as to avoid the introduction of impurity elements in the new crucible into the sapphire crystal growth process, thereby controlling the impurities of the sapphire crystal growth and improving the quality and consistency of the crystal growth.

The utility model relates to the technical field of stay cable construction, and provides a stay cable. The stay cable comprises a stay cable body, two anchoring assemblies, a protection assembly and a cable force monitoring assembly. Wherein one anchoring assembly is arranged at the main beam end of the stay cable body, and the other anchoring assembly is arranged at the cable bent tower end of the stay cable body. The protection assembly is arranged at the main beam end of the stay cable body and connected with one anchoring assembly, and the protection assembly is used for separating the main beam end of the stay cable body from the external environment. The cable force monitoring assembly is arranged on one anchoring assembly and used for monitoring the cable force change of the stay cable at the end of the main beam. According to the stay cable provided by the utility model, the stable performance of the stay cable can be kept for a long time, the safety of a bridge structure is ensured, and the durability of the stay cable is improved.

The utility model discloses an intercepting device for preventing water and soil loss. According to the intercepting device for preventing water and soil loss, a plurality of flowing holes are formed in the two sides of hollow baffles in a penetrating mode, steel pipes are fixedly installed in the flowing holes and are aluminum metal hollow pipe flow channels, the hollow baffles are further provided with a plurality of filtering holes, one end of each steel pipe is fixedly installed on a second hollow baffle, and the other end of each steel pipe is fixedly installed on a third hollow baffle. A first sand and mud blocking partition plate and a second sand and mud blocking partition plate are fixedly installed at the two ends of each hollow baffle, a large-area water and soil loss area can be divided into a plurality of small areas through the arrangement shape of the multiple hollow baffles fixedly penetrating into soil, and therefore the water and soil loss range is reduced, and the scouring force caused by water and soil loss can be effectively reduced; and the filtering holes are formed in the hollow baffles, redundant water in water and soil loss can be filtered out, the redundant water flows into the hollow baffles, and the water and soil loss speed can be effectively reduced.

The utility model discloses an electric melting furnace front wall which comprises a front wall body, an opening penetrating through the front wall body in the thickness direction of the front wall body is formed in the front wall body, a first cooling pipe communicated with an external cooling water circulation system is installed on the front wall body, and the first cooling pipe is arranged around the opening. According to the front wall of the electric melting furnace, the inner wall of the opening in the front wall body and the surrounding part of the opening of the front wall body are rapidly cooled through the arranged first cooling pipe, so that the erosion speed of the front wall is slowed down, and stable operation of the openings such as a feeding opening and a smoke exhaust opening is guaranteed; in addition, due to the arrangement of the second cooling pipe, other parts, except the opening, of the front wall body can be cooled.

The invention discloses a rotating tube for forming low-foamability medicinal glass and a preparation method of the rotating tube, and relates to the technical field of rotating tubes. According to the technical scheme, the refractory material comprises the following components in percentage by mass: 50-65% of corundum particles; 15-25% of corundum fine powder; 10-25% of composite phosphate fine powder; 3-5% of a sintering promoter; 2-5% of a binder; wherein the composite phosphate fine powder is a mixture of zirconium phosphate fine powder and aluminum phosphate fine powder, and the mass ratio of the zirconium phosphate fine powder to the aluminum phosphate fine powder is (1-3): (1-3). The rotating tube product for forming the medicinal glass has good thermal shock resistance, high glass corrosion resistance and low foamability, and is beneficial to prolonging the service life of the rotating tube for forming the medicinal glass and improving the yield of the rotating tube for forming the medicinal glass.

The invention provides an anti-erosion conical pipe and a size determining method for the anti-erosion conical pipe, and the conical pipe comprises a first straight pipe section, a second straight pipe section, a third straight pipe section and a fourth straight pipe section which are sequentially connected in the flowing direction of fluid, and the first straight pipe section is used for being connected with an incoming flow pipe; one end of the annular pipe section is connected with the first straight pipe section, the end, away from the first straight pipe section, of the annular pipe section is folded towards the center of the annular pipe section to form a folded section, and the diameter of the annular pipe section is gradually reduced in the flowing direction of fluid; the outer wall face of the reducing pipe section is connected with the end of the turnover section, an annular channel is formed between the outer ring face of the annular pipe section and the outer wall face of the reducing pipe section, the first straight pipe section, the annular pipe section and the reducing pipe section are communicated, and the extending direction of the reducing pipe section is parallel to the extending direction of the annular pipe section; and the second straight pipe section is used for being connected with an outflow pipe. The problem that in the prior art, a conical pipe is prone to being eroded and abraded is solved.

This utility model discloses an anti-erosion and anti-floating stabilizer for continuous casting tundishes, relating to the field of tundish refractory materials technology. It includes a stabilizer body with a circular inner cavity in the center. The inner cavity has stepped sides with a bottom-up design. A ring-shaped stabilizing protrusion is embedded at the corner of each step. Several evenly arranged turbulence blocks are fixedly mounted on the top surface of the steps and are fixedly connected to the stabilizing protrusions. An installation groove is provided at the bottom of the steps, and an impact plate is fixed within the groove. A first anti-floating protrusion and a second anti-floating protrusion are fixedly mounted at the lower part of the stabilizer body, with the second anti-floating protrusion positioned below the first. This utility model is rationally designed, effectively preventing erosion and damage to the sidewalls and bottom of the stabilizer caused by molten steel impact. It improves the overall stability and anti-erosion performance of the stabilizer structure, extends its service life, and ensures safe production in continuous casting tundishes.

This utility model discloses a coalbed methane collection device, including a tank support base mounted on the ground. A gas gathering and transportation tank is installed on the tank support base. A gas gathering pipe partially extending into the ground is connected below the gas gathering and transportation tank. A first tapered section is arranged on the gas gathering and transportation pipe near the gas gathering and transportation tank. A first throat stabilizing section is connected below the first tapered section. A first tapered amplifying and pressurizing section is connected below the first throat stabilizing section. A second tapered section is connected to the first tapered section. A second throat stabilizing section is connected below the second tapered section. A second tapered amplifying and pressurizing section is connected to the second throat stabilizing section. The above structure abandons the straight pipe or single tapered pipe structure and adopts a Venturi-like unit with a gentler pressure drop gradient. Multiple Venturi-like units are integrated in series, allowing the gas flow to pass through multiple throat stabilizing sections in stages for accelerated flow, effectively suppressing sudden changes in local pressure drop.

The turtle-shaped gravity anchor comprises an anchor body and a plurality of anchor feet installed at the bottom of the anchor body, the anchor body is provided with an arc-shaped arched back, at least one anchor body and an anchor head installed on one side of the anchor body, the shape of the anchor head is formed by gradually shrinking from the joint end of the anchor body to the other end, and an anchor chain installation hole is formed in the back of the anchor body. The anchor chain is connected with the anchor body through the anchor chain mounting hole. The arc-shaped arched back of the anchor body can reduce the impact force of water flow, the bottom surface is designed to be a plane to increase the adhesive force with a mud layer, the anchor foot structure is further inserted into the mud layer to be fixed, the tensile resistance is enhanced, and the effect of a gravity anchor is achieved; when the structure of the anchor head is used for fixing the floating platform, the anchor head can obliquely enter a mud layer and cannot move when an anchor chain is pulled, the position of the floating platform is fixed, and the requirement of the platform for the ocean current direction in ocean current power generation is met; the cement balls and the polyhedrons not only can increase the tensile resistance of the anchor chain, but also can reduce the seawater erosion speed and prolong the service life.

The utility model relates to the technical field of hoisting equipment, in particular to a lifting hook fixing device for a crane, which comprises a base, a containing groove is arranged in the middle of the base, a telescopic rod is arranged in the containing groove, the top of the telescopic rod is fixedly connected with a lock hook, the bottom of the telescopic rod is fixedly connected with a pin shaft, and the pin shaft is rotatably connected with one end of the containing groove. The telescopic rod can rotate to be perpendicular to or parallel to the base through the pin shaft, when the telescopic rod is parallel to the base, the telescopic rod and the lock hook are both located in the containing groove, and compared with the prior art, according to the technical scheme, erosion of air and rainwater is avoided, the service life is prolonged, and meanwhile the practicability of the fixing device is improved.

The invention relates to a refining slag melting agent, a preparation method and a smelting method applied to low-carbon steel wire rods, waste slag and waste magnesia carbon bricks generated in the refining process of aluminum killed steel are used as main raw materials, and the main raw materials are mixed and crushed according to a certain proportion to form the refining slag melting agent which has ladle corrosion resistance and can be applied to the low-carbon steel wire rods. According to the smelting method, refining slag is subjected to secondary deoxidation modification through a reasonable feeding method, and a CaO-Al2O3-SiO2-MgO quaternary refining slag system with the high MgO content is designed to replace an original CaO-SiO2 slag system. The low-cost and pollution-free product requirements can be met, and the metallurgical functions of refining, rapid slagging, desulfurization and reduction of steel ladle refractory material erosion can be achieved.

This utility model relates to the technical field of boiler degassing, and in particular to a degassing assembly and its electrode boiler, comprising: a degassing vessel, supported on the ground, with a degassing chamber inside and an outlet connected to the top of the degassing vessel; a filtration mechanism, connected to the outlet of the degassing vessel, for filtering the gas; wherein the degassing vessel includes: a heating cylinder, disposed inside the degassing vessel, with multiple connecting rods arranged circumferentially on the outer wall of the heating cylinder, the heating cylinder being fixedly installed inside the degassing vessel via the connecting rods; a water pump, fixedly installed on the outer wall of the degassing vessel, the water pump input end for drawing in boiler water, and the water pump output end connected to a water supply pipe; and an annular spray pipe, disposed inside the degassing vessel, connected to the water supply pipe, with multiple spray nozzles arranged annularly on the inner wall of the annular spray pipe, each spray nozzle being located at the top of the heating cylinder.

The inner surface of the crucible is provided with a body layer, a transition layer and a surface layer from inside to outside, the thickness of the transition layer is 30-100 microns, and the thickness of the surface layer is 50-200 microns; the body layer, the transition layer and the surface layer contain rare earth element oxides with sequentially increased concentrations, and the surface layer further contains vanadium steel waste residues. According to the crucible, the erosion speed of the positive electrode material is reduced, material adhesion is avoided, long-term normal use of the crucible is guaranteed, meanwhile, the thermal stability of the crucible is improved, the service life of the crucible is prolonged, and the service life of the crucible is prolonged by more than 60 times.

This invention, entitled "A High-Transmittance Polyimide Film Main Material, Film Coating, Composite Film Material, and Their Preparation and Application," belongs to the field of materials technology. Addressing the problems of easy surface cracking and significant degradation of optical performance after radiation in existing transparent anti-ionic oxygen polyimide films, this invention provides a polyimide film with high optical transparency and strong anti-ionic oxygen erosion resistance. The key technical point is a high-transmittance polyimide film main material, comprising an aromatic phosphorus-containing diamine, an alicyclic dianhydride monomer, and an organic solvent; the aromatic phosphorus-containing diamine is 2,5-bis[(4-aminophenoxy)phenyl]diphenyloxyphosphine; the alicyclic dianhydride monomer is selected from at least one of 1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,3-dimethyl-cyclobutane-1,2,3,4-tetracarboxylic dianhydride, and 1,2,3,4-tetramethyl-1,2,3,4-cyclobutanetetracarboxylic dianhydride.

The present invention relates to a housing for a compressor, which accommodates an impeller and allows the impeller to rotate relative to the housing, comprising: a first intake channel, which guides air in a first guide direction; a second intake channel, which extends at least partially circumferentially along the housing and guides exhaust gas in a second guide direction, the second intake channel comprises an inlet section and a relative outlet section, and the outlet section is positioned radially inside the inlet section, the cross-sectional ratio between the inlet cross-sectional area of ​​the inlet section and the outlet cross-sectional area of ​​the outlet section is between 2-10, and at the outlet section, the first angle formed by the second guide direction and the radial direction is in the range of 45 to 90 degrees. This housing allows the mixed gas formed by air and exhaust gas to generate a circumferential velocity, reducing the blade erosion rate without the need to coat the impeller. In addition, the present invention also relates to a compressor and an exhaust gas recirculation system.

The invention discloses environment-friendly high-performance anhydrous stemming for an iron-making blast furnace and a preparation method of the environment-friendly high-performance anhydrous stemming, belongs to the technical field of refractory materials, and is used for solving the problems that the bonding strength, the high temperature resistance, the green and environment-friendly performance and the like of anhydrous stemming in the prior art need to be improved due to the fact that the anhydrous stemming is modified by adopting a binding agent. The ceramic material comprises the following components in parts by weight: 30-40 parts of bauxite, 5-10 parts of silicon nitride micro powder, 20-30 parts of silicon nitride, 3-5 parts of silicon iron nitride micro powder, 6-10 parts of composite inorganic micro powder, 5-10 parts of modified coal tar, 1-2 parts of carbon black, 3-5 parts of carbon nanotubes and 5-10 parts of a modified adhesive. The coal tar is modified by the surfactant, the flammability of the coal tar is improved, and the modified adhesive prepared by modifying polyurethane with diketoxime and nano lignin powder has the characteristics of high adhesiveness, environment friendliness and high temperature resistance.

The invention discloses a rotary tube for low-foaming pharmaceutical glass molding and a preparation method thereof, and relates to the technical field of rotary tubes. The technical scheme is as follows: comprising the following components in mass percentage: 50-65% corundum particles; 15-25% corundum fine powder; 10-25% composite phosphate fine powder; 3-5% sintering agent; 2-5% binder; wherein the composite phosphate fine powder is a mixture of zirconium phosphate fine powder and aluminum phosphate fine powder, and the mass ratio of zirconium phosphate fine powder to aluminum phosphate fine powder is (1-3): (1-3). The rotary tube product for pharmaceutical glass molding produced by the present invention has good thermal shock resistance, high glass erosion resistance, and low foaming, which is beneficial to prolonging the service life of the rotary tube for pharmaceutical glass molding and improving the yield rate of the rotary tube for pharmaceutical glass molding.