45 results about "Brass" patented technology

Electrical conductor for earthing, comprising at least one metal wire comprising an aluminium core, at least one copper layer cladding said core, at least one coating layer of a metal selected f rom tin, nickel, bronze, brass, zinc, chrome, coating the copper layer. Said at least one coating layer has a thickness of from 2 to 50 pm. Compared to copper, the earthing conductor according to the present invention provides protection against corrosion, is flexible, robust in processing, resistant to bending during installation, provides equivalent performance in terms of melting current and electrical resistance, is about 40% lighter, has lower costs, is equally recyclable but with a different working process that makes it more difficult to recover immediately, thus discouraging theft.

This invention relates to the field of cage processing and discloses a production equipment for cylindrical roller brass bearing cages. The equipment includes a base, a fixture mounted on the base, a first cage placed on the fixture, a movable column slidably mounted on the base, a first telescopic rod slidably mounted inside the movable column, a tool mounting block fixedly mounted at the end of the first telescopic rod, a first tool mounted at the lower part of the tool mounting block, and a cutting stabilizing device mounted on the tool mounting block. This invention reduces the gap between parts when the first tool and the first cage are not in contact by contacting the contact element inside the cutting stabilizing device. This allows the adaptor and power element to rise, thereby driving the connecting element to compress the extrusion block. The extrusion block can compress the extrusion ring through the extrusion element, thus limiting the position of the first tool and allowing the first tool to be centered during processing. This reduces uneven force on the first tool during processing and lowers the processing error of the first cage.

This invention discloses a casting apparatus and casting process for lead-free brass water meter housings, relating to the field of brass casting technology. It includes a main body, a fixing unit, a pretreatment unit, a pneumatic unit, and a control unit. The fixing unit clamps the water meter housing; the control unit monitors the casting temperature in real time via a temperature sensor. When the water meter housing is in the hot brittle range above 300°C, the air supply unit only outputs airflow for gentle cooling to prevent deformation and cracking of the casting. When the temperature drops to 200°C from 300°C, the air supply unit outputs high-pressure airflow to drive a vibrating unit, using high-frequency self-excited oscillation to break down and peel off the internal molding sand. When the temperature drops below 200°C, the air supply unit outputs pulsed airflow to drive a striking unit, reciprocatingly striking the outer wall of the water meter housing to remove residual molding sand. Finally, the extraction unit uses negative pressure to extract and separate the molding sand. This invention solves the problem of easy damage or difficult sand removal of lead-free brass water meter housings at different cooling stages, achieving efficient and non-destructive sand removal.

This invention discloses a high-efficiency polishing device and method for multi-station, same-size brass rods, including a worktable; a support frame fixedly connected to the worktable, on which a polishing component is mounted; two synchronous belts fixedly connected to the worktable, located at opposite ends of the worktable; multiple arc-shaped frames fixedly connected to the synchronous belts, with retaining rings rotatably connected within each arc-shaped frame; a gear fixedly connected to the end of each retaining ring furthest from the worktable; and extension frames fixedly connected to both ends of the worktable. In this invention, by using synchronous belts in conjunction with arc-shaped frames and retaining rings, the user can place the brass rod into the retaining ring. The retaining ring then moves towards the polishing component under the drive of the synchronous belt. During this movement, the gear and rack mechanism allows the brass rod to rotate while moving horizontally, enabling more efficient polishing operations in conjunction with the polishing component.

This invention discloses a corrosion-resistant free-machining brass alloy, its preparation method, and its applications. The corrosion-resistant free-machining brass alloy is composed of the following components by mass percentage: Cu: 58.0~62.5%, Si: 0.3~1.2%, Ni: 0.1~0.5%, Mn: 0.3~0.7%, B: 0.005~0.025%, with the balance being Zn and unavoidable impurity elements, wherein the total content of unavoidable impurity elements is <0.3%. The brass alloy of this invention possesses excellent machinability, corrosion resistance, and mechanical properties, and is lead-free, meeting environmental protection requirements and satisfying the needs of various fields for brass alloy materials.

The utility model discloses a micro -type reaction furnace, including the shell, is equipped with the heat preservation cavity on the shell, and the heat preservation cavity is filled with the heat preservation material, the inside of shell is equipped with heating chamber, and the heat preservation cavity covers heating chamber in, the heat conduction component, the heat conduction component is assembled in heating chamber, is equipped with the reaction chamber on the heat conduction component, and the both sides of reaction chamber are equipped with the heating groove, and the heat conduction component still is equipped with the assembly groove, and the assembly groove is linked together with heating groove, heating rod, heating rod installs in heating groove. The utility model has the beneficial effects that: this micro -type reaction furnace passes through the light -duty aluminum alloy shell, the heat preservation material + zirconia ceramic piece, brass heat conduction component and the collaborative design of "K type thermocouple + temperature controller", effectively solved the traditional reaction furnace volume huge, the problem of uneven heating, the poor heat preservation effect, the low temperature control precision, especially applicable to the fine heating reaction scene of micro -type sample, has convenient operation, temperature control precision, high thermal efficiency, compact structure and so on the remarkable advantage.

This invention relates to a treatment device for dyeing brass zipper heads to an antique bronze color. The device is used for pre-treatment of brass zipper heads to achieve this effect. It includes a mounting frame with several clamping components along its length. Each clamping component includes a first plate and a second plate, which are parallel to each other and used to clamp the zipper head. The mounting frame also includes a drive component for moving the second plate to rotate the zipper head. This invention employs fluid polishing to perform a thorough pre-treatment of the zipper head, improving its surface quality. While maintaining precision, it also reduces processing time and costs, and generates less waste liquid, resulting in less environmental pollution.

The application discloses a metal material vacuum purification furnace, which comprises a molten liquid bag, a first isolation valve, a flow channel and a separation chamber; the first isolation valve is connected with the separation chamber; the separation chamber comprises a separation chamber shell, a heating chamber, a heater, an isolation box and a molten pool; the heating chamber is arranged in the separation chamber shell, and the heater, the isolation box and the molten pool are arranged in the heating chamber; each isolation box is provided with a molten pool, and a plug part is arranged on the molten pool; one end of the flow channel can be moved into the separation chamber by opening the first isolation valve; the molten liquid bag can pour the melt in the molten liquid bag into the flow channel, and then into the uppermost molten pool in the separation chamber; the melt in the molten pool can flow into the next layer of molten pool by opening the plug part; and the heater is used for heating the isolation box and the molten pool. The application further discloses a brass separation method implemented by using the metal material vacuum purification furnace, so that the purity of separated metals such as copper and zinc is improved, the oxidation loss is reduced, and the production efficiency is improved.

The utility model relates to cutting device technical field, and specifically is a brass bar cutting device, including cutting base, the top of cutting base is integrated with the structure of placing seat, first, the brass bar is placed in the surface recess of placing seat, then two limit frame covers the surface of brass bar, and the limit frame is fixed through the rotation fixed bolt, then the threaded rod that screwing seat top screwing of top is rotated to push the friction limiting piece and displace downward under the hole restriction, thereby clamping and fixing the brass bar, can quickly fix the brass bar, has saved the time of fixed brass bar, has relatively improved cutting efficiency.

This utility model discloses a specimen assembly rack, including two brass brackets, with a brass screw inserted between the two brass brackets. Both ends of the brass screw are threaded with brass nuts. Multiple specimen bodies can be inserted through the brass screw. A first insulating washer is inserted into one side of each brass bracket, and the first insulating washer is fitted onto the outside of the brass screw. Multiple second insulating washers are snapped onto the outer wall of the brass screw. The bottom of each second insulating washer has a notch, and both ends of each second insulating washer are fixedly connected to insertion rings, which are inserted into through holes. The brass brackets are rectangular in structure, and both ends of the brass screw are fitted with washers. This utility model fixes the brass screw by fitting multiple specimen bodies onto it and then tightening the brass nuts at both ends, thus facilitating the suspension test of the specimen bodies.

This invention discloses an anti-creep Bi-In-Sn fusible alloy foil, comprising an inner alloy sheet and a metal fiber mesh covering the surface of the alloy sheet, wherein the alloy sheet is a Bi-In-Sn alloy. The anti-creep Bi-In-Sn fusible alloy foil of this invention employs a metal fiber mesh coating on the fusible alloy to: 1) secure the fusible alloy sheet, suppressing the risk of cracking during subsequent rolling and improving the yield of the foil alloy; 2) enhance the strength and toughness of the alloy foil body, making it less prone to cracking during use and transportation; and 3) when brazing brass temperature control components, the metal fiber mesh partially dissolves into the brazing seam, playing a solid solution strengthening role and delaying the high-temperature creep of the component to a certain extent; simultaneously, the unmelted metal fiber mesh in the brazing seam acts as a pinning agent to prevent component deformation, significantly improving the creep resistance of the component.

The application discloses a water-based cleaning agent special for copper alloy and a preparation method thereof, and belongs to the technical field of metal surface cleaning. The application aims at solving the problems that existing cleaning agents are prone to cause over corrosion and surface loss of luster when cleaning copper alloy, cannot efficiently remove copper green / oxide scale / fingerprint, the cleaned copper alloy is prone to rapid oxidation and discoloration, and a single product cannot simultaneously remove oil, oxide and prevent discoloration. The application is composed of the following components in percentage by weight: 8%-20% of a composite oil-removing and oxide-removing agent, 5%-15% of a special anti-discoloring agent for copper alloy, 2%-6% of a mild alkaline adjusting agent, 3%-8% of a complexing and washing aid, 2%-5% of a solubilizing stabilizer, 1%-5% of a water treatment agent, 0.05%-0.2% of a low-foam organic silicon defoaming agent, and the balance of deionized water. The application is suitable for all copper alloy materials such as red copper, brass, bronze and white copper, meets the cleaning requirements of copper alloy parts in the fields of electronic appliances, hardware and bathroom, precision machinery and pipelines and pipe fittings, and does not affect subsequent electroplating, polishing, coating and bonding processes.

This invention relates to the field of hydrogen technology and discloses a metal-organic composite material for use in conjunction with a solenoid valve. The preparation method includes the following steps: S1 Material selection: including brass: ensuring sufficient strength and corrosion resistance under working conditions; spandex: selecting a type of spandex resistant to chemical media to ensure it does not age rapidly in hydrogen and related liquid working environments; aramid: selecting an aramid variety that remains stable at high temperatures to withstand possible extreme temperatures. This metal-organic composite material, using a composite made of brass, spandex, and aramid for the assembly of a solenoid valve, achieves complementary properties of metal and organic materials, thereby improving the sealing performance and resistance to liquid erosion of the solenoid valve in a hydrogen environment. This design solves the problems of poor chemical stability and insufficient sealing that may exist in existing solenoid valves.

This invention relates to a method for preparing high-performance copper alloys, belonging to the field of copper alloy preparation. Addressing the problems of poor consistency and large fluctuations in tensile strength of existing recycled leaded brass alloy continuous castings, a method for preparing high-performance copper alloys has been invented. This method includes auxiliary heating and stirring of the melt at the crystallizer front, and the addition of a grain refiner. This improves the uniformity and consistency of the composition and microstructure of the recycled leaded brass alloy, increases its tensile strength, and enhances its surface roughness during processing.

The present application relates to the field of musical instrument manufacturing, and discloses a brass resonant type of accordion and an acoustic tuning method thereof. The accordion comprises a body, a row spring assembly and a brass decorative shell, and the brass decorative shell is provided with a brass resonant horn opening at the end. In the row spring assembly, the number of simultaneously sounding bass reed rows in the same sound area is 1, 2 or 3, the number of simultaneously sounding medium reed rows is 1 or 2, and the number of simultaneously sounding high reed rows is 0 or 1. The acoustic tuning method comprises calibrating the resonant frequency of the brass resonant horn, adjusting the vibration fundamental frequency of the row spring reed so that the deviation from the resonant frequency is not more than a preset threshold, and adjusting the vibration fundamental frequency by changing the stiffness or equivalent mass of the reed. The present application significantly improves the fullness of the low-pitched sound part and the overall tone color of the accordion by precisely matching the resonance effect of the brass resonant horn with the frequency of the reed, and solves the problem of the thin low-pitched sound of the traditional accordion.

This invention discloses a method for preparing a minute repeater gong from nanoporous copper, relating to the technical field of watch gongs. The invention aims to solve the problems of insufficiently crisp sound quality, poor stability, and short service life of watch gongs. The invention includes: raw material smelting; raw material ingot preparation; hot rolling and trimming of the raw material, rolling the ingot to a thickness of 2.1 mm and trimming the edges; dealloying and etching of the raw material; precision forming; shaping and reinforcement; and surface protection.

An electrode wire includes a brass core, a Cu—Zn alloy layer coated on the brass core, and a surface layer. The surface layer includes CuO, ZnO, Cu2(OH)2CO3, and a Cu—Zn intermetallic compound. The surface layer is in the shape of particles or sheets spaced apart on the Cu—Zn alloy layer; and the Cu—Zn alloy layer is exposed with respect to spaces between the particles or sheets.

A formulation comprises a mixture of dyes composed of Solvent Yellow 82 (Dye A), Acid Violet 66 (Dye B), and Solvent Black 27 (Dye C). Preferably, the formulation is a coating, such as a lacquer. The formulation may also contain 50-99.5 wt.% solvent, e.g. water, butyl glycol, or 4-hydroxy-4-methylpenta-2-one and 0.1-10.0 wt.% dispersant, e.g. docusate sodium and docusate calcium. The mixture of dyes may be present in an amount of 0.01-5.0 wt.%. An article comprising a substrate and the formulation is further disclosed. Typically, the formulation is coated onto an exterior surface of the substrate. The substrate may be a metal or alloy, such as brass or stainless steel. The article may comprise a base layer, e.g. copper and a top layer, e.g. a gloss or matt lacquer. The substrate may be a tap, shower, or other bathroom fixture or accessory. [Refer to original abstract doc for image] Dye A Dye B Dye C No Figure

This invention belongs to the field of solid-state hydrogen storage technology, and in particular, a constrained structure for a solid-state hydrogen storage device. It includes a bimetallic structure disposed within a hydrogen storage container. The bimetallic structure is composed of two metals or alloys with significantly different coefficients of thermal expansion. The bimetallic structure includes an active layer and a passive layer. The active layer includes at least one of brass, nickel-copper, and nickel-chromium alloys, while the passive layer includes at least one of Invar alloy, iron-nickel alloy, and stainless steel. When the temperature rises, the bimetallic structure bends towards the passive layer side; when the temperature drops to its original state, the bimetallic structure returns to its original shape. This invention offsets some of the stress experienced by the hydrogen storage tank during hydrogen absorption, extends the service life of the hydrogen storage module, prevents powder pulverization and migration, optimizes the hydrogen storage performance of the hydrogen storage tank, balances uneven hydrogen absorption and temperature distribution within the hydrogen storage tank, and improves overall hydrogen storage performance.

The utility model relates to brass hot forging processing technical field, and disclose a brass hot forging forming device, solved the problem that the forming device for brass hot forging processing could not automatically eject the workpiece after forming in the process of using, it includes support base frame, the top fixed mounting of support base frame has the support platform, the top fixed mounting of support platform has the forming die, and the inside bottom end movable mounting of forming die has the ejection plate, the outside of forming die and located the top fixed mounting of support platform has the support frame, the top inside fixed penetration of support frame installs hydraulic pressure rod, the bottom fixed mounting of hydraulic pressure rod has the pressing plate, the inside installation of support base frame has the adjustment ejecting assembly, and the bottom of ejection plate is connected with adjustment ejecting assembly, the utility model discloses, make the forming device for brass hot forging processing in the process of using, can automatically eject the workpiece after forming, improve the efficiency of work, thereby convenient to reach better practicality.

This invention provides a method for preparing fine-grained H70 brass rods, belonging to the field of brass rod preparation technology. It solves the problems of insufficient precision and cracking caused by dimensional deviations and coarse grains in existing brass rod preparation methods. This invention involves heating sawn brass ingots in a medium-frequency induction furnace; extruding the heated ingots into billet coils using an extruder; cooling the extruded coils using a combination of spraying and water baths; stretching the billet coils; annealing the stretched brass rods to obtain finished rods; and sampling the finished rods after annealing for microstructure analysis and mechanical property testing. This invention, through hot extrusion, EJP finishing and stretching, and annealing processes, prepares brass rods with high dimensional accuracy, uniform structure, and fine grains. The obtained rods exhibit good deep-drawing performance and adaptability to large deformation cold working, meeting the requirements of subsequent high-precision forming and processing.

This utility model discloses a copper-cased, brass-insulated distributor, relating to the field of distributor technology. The utility model includes a distributor body with a plurality of evenly spaced dispensing holes around its circumference. A shell is threaded onto the outer circumference of the distributor body, and an inlet end with an inlet hole is located at the upper end of the shell. A flow-dividing structure is installed on the distributor body. This utility model utilizes the funnel-shaped design of the inner wall of the dispensing end and the flow-dividing seat, along with a uniformly spiral-designed flow-dividing baffle, to force the refrigerant into a spiral rotational flow after entering the distributor. Centrifugal force is used to achieve uniform circumferential distribution. Combined with the symmetrical circumferential layout of the dispensing holes, this completely eliminates the flow difference caused by abrupt changes in the flow channel in traditional distributors, ensuring uniform refrigerant distribution to the capillary tube and improving the energy efficiency and cooling effect of the refrigeration system.

This invention discloses a dynamic lithium metal anode current collector based on a pressure-triggered expandable structure and its preparation method. The current collector comprises a bottom conductive nucleation layer and an upper dynamic functional layer. The bottom conductive nucleation layer is composed of a porous copper framework, which is a brass mesh that has undergone selective dealloying treatment. The lower half of the porous copper framework is surface-modified with an array of lithium-affinity nanoparticles. The upper dynamic functional layer is a wrinkled graphene-PDMS composite layer. Through the dual-layer composite design of the bottom conductive nucleation layer and the upper dynamic functional layer, combined with weakly bonded lattice connections and pre-set micro-expansion channels, the current collector can adaptively expand with the accumulation of internal pressure during lithium deposition, continuously providing an ordered growth space for lithium metal, and achieving a functional leap from passive guidance to active response and spatial regeneration.

The application relates to the technical field of refrigeration control valves, in particular to a medium-flow electromagnetic valve suitable for commercial refrigeration industry, which comprises a stainless steel sleeve, a magnetic core is slidably connected in the interior of the stainless steel sleeve, a plug is connected above the magnetic core in the interior of the stainless steel sleeve, a cylindrical spring is sleeved in the interior of the magnetic core, a coil outer cover is installed outside the stainless steel sleeve, and an electromagnetic coil is wound outside the stainless steel sleeve; the application adopts brass core sealing pieces and brass bodies or stainless steel bodies to realize precise hard sealing cooperation, the finishing degree and the roundness precision are high, the sealing is stable and reliable, nearly zero leakage is realized, the problems of large leakage of traditional soft sealing and valve piece sealing are solved, the metal hard sealing is wear-resistant, impact-resistant and not prone to aging, the service life is increased from 50,000 times to more than 600,000 times under the frequent on-off and reversing working conditions, and the service life is increased by more than 10 times.

This invention discloses a copper-plated iron wire / copper-plated steel wire thermocouple and its welding process, comprising: a brass rod substrate and a positive lead, wherein a transition solder joint is formed on the surface of the brass rod substrate and the end of the positive lead is connected to the brass rod substrate through the transition solder joint, and the positive lead is configured as either copper-plated iron wire or copper-plated steel wire; and a negative lead, one end of which is connected to a quick-connect terminal for temperature measurement. This invention, through a process design of pure copper wire transition welding, forms a transition solder joint between the brass rod substrate and the positive lead, achieving a high-strength metallurgical bond between the copper-plated iron wire / copper-plated steel wire and the brass rod substrate. The positive lead uses copper-plated iron wire or copper-plated steel wire instead of the industry-standard pure copper wire, significantly reducing the cost of the substrate. Simultaneously, the pure copper wire is used only as a transition solder, in very small quantities, and does not increase manufacturing costs. The cost reduction effect is significant when scaled up for mass production.

This invention discloses a brass annealing process using a natural gas annealing furnace, aiming to solve the problem of water spots easily forming on the surface of brass products during heat treatment using a natural gas annealing furnace. The invention includes the following steps: S1, starting the blower of the natural gas annealing furnace; S2, igniting the natural gas annealing furnace; S3, when the furnace temperature reaches 500-600 degrees Celsius, extinguishing the furnace and stopping heating, and turning off the blower; S4, loading the brass product into the furnace for preheating, and allowing the brass product to stand still in the furnace; S5, restarting the blower, and then igniting the furnace; S6, holding the furnace at 350-450 degrees Celsius, and after the holding time, cooling the brass product in the furnace to 180-220 degrees Celsius before removing it from the furnace. The brass annealing process using a natural gas annealing furnace is not affected by power restrictions, and water spots do not appear during the brass annealing process, ensuring product quality.

The invention relates to a siphon (10) for sanitary applications, in particular a tubular siphon (10a) or a cup siphon (10b), comprising at least first components and second components, wherein the first components comprise a dip tube element (3) and a wall pipe element (1), and the second components comprise an elbow element (2) or a cup element (6). The invention provides that at least one first component is made of brass, in particular chrome-plated brass, and the second components are made of stainless steel, in particular chrome-plated stainless steel.

The present application relates to a kind of welding devices, especially a kind of electronic and electrical device welding device.The technical problem of the present application is to provide a kind of electronic and electrical device welding device, which can stably weld wire on aviation joint, and can also make tin liquid more evenly distributed to make the weld more beautiful.A kind of electronic and electrical device welding device, comprising base, grooved plate, perforated plate, rotating gear disc and the like;The grooved plate and the perforated plate are fixedly connected on the top side of the base, and the rotating gear disc is rotatably connected on the perforated plate.By heating the tin liquid on the aviation joint through the brass heat-conducting block, the heating time of the tin liquid can be extended, so that the tin liquid flows evenly to the position of the aviation joint and the wire welding, thereby making the shape of the weld between the aviation joint and the wire more beautiful.

The utility model relates to solenoid valve technical field, concretely is a kind of small solenoid valve of novel brass body material and practical type combination with whole machine power adaptation, including brass valve body, the top of brass valve body is equipped with stainless steel sleeve pipe, the inner side wall slidingly connected of stainless steel sleeve pipe has magnetic core, the inside installation of magnetic core has cylindrical spring, the top of stainless steel sleeve pipe is equipped with plug, the top of cylindrical spring is fixedly connected with the plug, the outer side wall of stainless steel sleeve pipe is equipped with shell, the outer side wall of stainless steel sleeve pipe is located in the inside of shell and is wound with electromagnetic coil, the utility model is by the valve port passway of brass body and be designed as 1.9-2.0mm, cooperate 4-6mm's steel ball and special brass material form hard seal, accurate control small flow refrigerant's through, perfect adaptation ice maker, ice cream machine and other whole machine power small, need micro flow control refrigeration system, solve the problem of the refrigeration capacity control inaccuracy caused by the excessive flow of existing solenoid valve.