92 results about "Beryllium-Copper Alloy" patented technology

The invention relates to a preparation method of beryllium-copper alloy. The preparation method comprises the following steps: (S1) accurately weighing the following raw materials by mass: copper, beryllium, copper-yttrium alloy, copper-titanium alloy, copper-manganese alloy and nano ytterbium powder; (S2) the raw materials are added into a vacuum induction furnace, the temperature is increased to 1400-1600 DEG C under the inert atmosphere, after the raw materials are completely molten, a covering agent is spread on the melt, smelting, standing and slagging-off are conducted under the stirring condition, the melt is poured into a mold under the condition of 1100-1200 DEG C, and a beryllium copper alloy ingot is obtained; and (S3) the beryllium-copper alloy ingot is subjected to face milling treatment, solution treatment, cold machining deformation treatment and aging treatment in sequence, and the product beryllium-copper alloy is obtained. A small amount of metal elements are added, aging treatment is carried out under the microwave condition, and then slow cooling is carried out at the constant cooling rate, so that the overaging phenomenon can be remarkably inhibited, the hardness of the alloy is improved, and meanwhile, the mechanical property, especially the stress relaxation resistance, is also improved.

The invention discloses a high-conductivity low-beryllium copper alloy strip for electroplating and a preparation method of the high-conductivity low-beryllium copper alloy strip, and relates to the technical field of preparation of beryllium copper alloys for electroplating. The high-conductivity low-beryllium copper alloy strip for electroplating comprises the following components in percentage by mass: 0.2%-0.4% of Be, 0.4%-0.6% of Co, 0.05%-0.2% of Ni, 0.1%-0.3% of Ag, 0.05%-0.1% of Zr and the balance of Cu. The preparation method comprises the steps of homogenizing annealing, hot rolling, multiple times of normal-temperature rolling, multiple times of cleaning and brushing, solid solution, aging and the like. According to the product, the conductivity of the beryllium-copper alloy strip is improved by a method for increasing the silver content by reducing the beryllium content. Furthermore, according to the preparation method disclosed by the invention, the surface roughness of the strip is increased by adding a plurality of normal-temperature rolling, a plurality of cleaning, brushing and grinding processes and a grinding process after homogenizing annealing and hot rolling, so that the electroplating effect of the strip is better.

The invention provides a preparation method of a beryllium-copper alloy material with high beryllium content, which comprises the following steps of: preparing metal raw materials containing pure copper and beryllium-copper master alloy, smelting to obtain alloy liquid, casting the alloy liquid to obtain a cast ingot, homogenizing the cast ingot to obtain a homogenized casting blank, and hot-rolling the homogenized casting blank to obtain a hot-rolled blank, the preparation method comprises the following steps: carrying out hot rolling on an alloy strip, carrying out hot rolling on the alloy strip to obtain a hot-rolled blank, carrying out annealing treatment on the hot-rolled blank to obtain an annealed blank, carrying out a circulating cold rolling-intermediate annealing process on the annealed blank, and finally carrying out finish rolling and finished product annealing treatment on the alloy strip to prepare the high-beryllium-content beryllium-copper alloy material. And machining passes are many.

The invention provides a stress relaxation resistant low beryllium copper alloy and a preparation method thereof, and belongs to the technical field of alloys. The stress relaxation resistant low beryllium copper alloy is prepared from the following components in percentage by mass: 0.1 to 0.5 percent of Be, 0.1 to 0.5 percent of Co, 0.1 to 0.3 percent of Sn and the balance of Cu. The Sn element and the Co element are added, and a Cottrel air mass can be formed by utilizing Sn atoms and Co atoms to hinder dislocation motion, so that the stress relaxation resistance is improved. The result of the embodiment shows that the stress relaxation rate of the low-beryllium copper alloy is kept at about 10% in the whole test period, the low-beryllium copper alloy has excellent stress relaxation resistance, meanwhile, the tensile strength of the alloy can reach 750-800 MPa, the hardness of the alloy is 240-260 HV, the conductivity of the alloy is 52-55% IACS, and the low-beryllium copper alloy has high strength, high conductivity and excellent stress relaxation resistance.

The invention discloses a method for preparing beryllium-copper master alloy by recycling waste beryllium materials, and belongs to the technical field of beryllium-copper alloy, the method comprises the following steps: S1, sequentially carrying out acid pickling, water washing, ultrasonic cleaning, spin-drying and drying on waste beryllium chips and beryllium-copper leftover materials; s2, according to the beryllium content in the beryllium-copper master alloy, weighing the dried beryllium scraps and beryllium-copper leftover materials, and putting the beryllium scraps and the beryllium-copper leftover materials into a cake pressing machine for pressing to obtain columnar materials; and S3, the columnar material is placed in a copper crucible in a vacuum suspension smelting furnace, and water cooling, vacuumizing, argon filling, power regulation and control smelting, staged cooling, vacuum breaking and surface cleaning are sequentially carried out. The beryllium-copper master alloy prepared through the method is stable in beryllium content control and low in impurity content, recycling of beryllium waste and beryllium-copper leftover materials is achieved, and the production cost of the beryllium-copper alloy is reduced.

The invention provides a method for improving the electric conductivity of C17460 beryllium copper, and belongs to the technical field of beryllium copper alloy treatment.The method comprises the steps that electrolytic copper, nickel and zirconium are laid in a vacuum melting furnace to be sequentially subjected to vacuum melting, refining and casting in a graphite mold to be solidified, and a copper-nickel-zirconium alloy is obtained; the method comprises the following steps: smelting electrolytic copper, a copper-nickel-zirconium alloy, a beryllium-copper master alloy and nickel in a non-vacuum smelting furnace, and then casting and cooling in sequence to obtain a C17460 beryllium-copper cast ingot; sequentially carrying out primary hot rolling, double-sided milling and rough rolling on the cast ingot; the strip is sequentially subjected to edge cutting, primary cleaning and brushing grinding, primary solution treatment, secondary cleaning and brushing grinding, primary finish rolling, secondary solution treatment, tertiary cleaning and brushing grinding, secondary finish rolling, primary cleaning, primary withdrawal and straightening, graded aging, secondary cleaning, secondary withdrawal and straightening and slitting. On the basis of keeping the original excellent mechanical properties of C17460 beryllium copper, the conductivity of the beryllium copper is improved, the production difficulty is low, and the cost is low.

The utility model discloses a deburring device for machining a beryllium copper alloy plate, relates to the technical field of deburring of alloy parts, and aims to solve the problems that only one side of an alloy part can be deburred and the efficiency is low in the using process of an existing device. The supporting legs are installed at the four corners of the upper end of the bottom plate, a conveyor shell is installed at the upper ends of the supporting legs, a conveying belt is installed in the conveyor shell, a servo motor is installed on the outer wall of the conveyor shell, and the output end of the servo motor is in transmission connection with the conveying belt; the plate turnover mechanism is mounted at one end of the conveyor shell; the supporting frame is installed in the middle of the two sides of the conveyor shell, a top plate is installed at the upper end of the supporting frame, a transmission seat is arranged below the top plate, a hydraulic cylinder is installed at the upper end of the top plate, and the output end of the hydraulic cylinder penetrates through and extends to the lower end of the top plate and is in transmission connection with the transmission seat.

The invention discloses a beryllium-copper alloy and a production process thereof, and belongs to the technical field of copper alloy materials, the beryllium-copper alloy comprises the following raw materials by weight: 2-2.5% of beryllium, 1.3-2% of nickel, 0.05-0.1% of titanium, 1.2-1.5% of a covering agent, and the balance of copper and inevitable impurities; the preparation method comprises the following steps: adding beryllium, nickel, titanium and copper into a medium-frequency induction melting furnace, heating to 1360-1460 DEG C under a protective atmosphere to prepare a melt, adding a covering agent, smelting for 2-4 hours, standing, slagging off, and cooling to room temperature to prepare a beryllium-copper alloy; after the covering agent is added into a melt, on one hand, beryllium can be fully protected from being oxidized to cause loss, on the other hand, the special hollow structure of mullite can play a role in heat preservation and guarantee smooth proceeding of the smelting process, magnesium chloride, europium oxide and yttrium vanadate introduced to the surface can participate in refining of the melt, and the comprehensive performance of the alloy is further improved.

The invention relates to a high-performance beryllium copper alloy and a preparation method thereof, and belongs to the technical field of alloy materials. The beryllium-copper alloy comprises the following chemical components in percentage by weight: 1.7 to 2.0 percent of Be, 0.25 to 0.38 percent of Co, 0.32 to 0.4 percent of Ni, 0.16 to 0.23 percent of Ti, and the following main impurity components in percentage by weight: less than or equal to 0.12 percent of Fe, less than or equal to 0.08 percent of Si, less than or equal to 0.05 percent of Al and the balance of Cu and inevitable impurities. After alloying smelting, a C-coated SiC / Te refining agent is adopted for refining and purifying, the refining agent takes silicon carbide as a carrier, the thermal stability is excellent, slag can be fully discharged to be separated from impurities, and the comprehensive performance of the beryllium-copper alloy is remarkably improved through a triple synergistic mechanism of'carbon layer protection-Te efficient impurity removal-low residue design 'of a surface load layer.

The invention discloses a small-diameter beryllium copper microwire for an aviation electric connector and a preparation method of the small-diameter beryllium copper microwire, and belongs to the technical field of beryllium copper alloy. The small-diameter beryllium copper microwire is manufactured through the working procedures of homogenizing annealing, extrusion, hot rolling, annealing, primary acid pickling, stretching, secondary acid pickling, bright continuous solid solution, multi-mode stretching and the like, an oxidation film on the surface of the beryllium copper microwire is eliminated through the acid pickling and bright continuous solid solution working procedures, and the surface quality of the beryllium copper microwire is remarkably improved; the beryllium copper microwire subjected to finished product stretching is bright in surface, free of cracks, scratches and other surface defects and stable in mechanical property, the hard tensile strength of the beryllium copper microwire can reach 1100 MPa or above, and the product consistency is good.

Provided is a hydrogen-resistant material which combines the material strength and fracture toughness required for a structural member that operates in a hydrogen atmosphere, and which does not deteriorate or does not easily deteriorate in the hydrogen atmosphere. The hydrogen-resistant material is used for processing a hydrogen-resistant structural member used for operating in a hydrogen atmosphere, and is composed of a beryllium-copper alloy containing 0.2-2.7 mass% of Be and 0.2-2.5 mass% in total of at least one element selected from the group consisting of Co, Ni and Fe, the remainder being Cu and unavoidable impurities, and the total content of Cu, Be, Co, Ni and Fe being 99.0 mass% or more of the beryllium-copper alloy. The hydrogen-resistant material exhibits a tensile strength of 700 MPa or more, a relative reduction in area (RRA) of 0.80 or more, and a fracture toughness value KIC of 50 MPa.m < 1 / 2 > or more, respectively, in an air atmosphere and a hydrogen atmosphere, respectively, by a low strain rate tensile test in the air atmosphere and the hydrogen atmosphere.

The utility model discloses a loudspeaker single body with a beryllium copper elastic sheet, which comprises a basin frame, U iron is arranged on the basin frame, a magnet is arranged on the U iron, a washer is arranged on the magnet, a voice coil is arranged outside the magnet and the washer, the voice coil is positioned in the basin frame, a vibrating diaphragm is arranged at the top of the basin frame, and the vibrating diaphragm is positioned in the basin frame. The bottom of the voice coil is provided with a metal elastic sheet, and the metal elastic sheet is made of beryllium copper alloy. According to the loudspeaker monomer with the beryllium copper elastic sheet, the conductivity and the rigidity of the metal elastic sheet can be ensured, and the acoustic quality of the loudspeaker monomer cannot be influenced.

The application discloses a high-temperature-resistant beryllium copper alloy for microswitches and a preparation method thereof, and belongs to the technical field of electronic component manufacturing. The alloy composition is as follows in terms of percentage by weight: Be 0.20%-0.50%, Co 1.20%-1.30%, Ni 3.20%-3.50%, W 0.30%-0.50%, Fe 0.12%-0.15%, Zr 0.16%-0.20%, Y 0.12%-0.15%, B 0.010%-0.015%, Pb≤0.003%, Sn≤0.003%, total impurities≤0.01%, and the balance being Cu. The preparation method comprises the following steps: 1280-1300 DEG C. smelting, 1620-1650 DEG C. high-temperature refining, homogenization treatment, hot rolling, annealing, solid solution, twice cold rolling and intermediate annealing, two-stage aging treatment, and finally, a strip with a thickness of 0.5-2.0 mm and an average grain size of 5-7 um is obtained. The obtained product has a yield strength of ≥980 MPa, a tensile strength of ≥1200 MPa, an elongation of ≥5%, and an elastic modulus of ≥115 GPa, and has excellent high-temperature strength, elastic stability and stress relaxation resistance.

The invention relates to a beryllium-copper alloy explosion-proof material, a preparation method thereof and application of the beryllium-copper alloy explosion-proof material to an electric tool, and the beryllium-copper alloy explosion-proof material comprises the following components in percentage by mass: 1.95-2.35% of beryllium, 0.6-0.9% of cobalt, 0.2-0.5% of nickel, 0.25-0.5% of chromium, 0.1-0.25% of silver, 0.5-1.0% of titanium, 0.05-0.15% of iron, 0.05-0.15% of aluminum, 0.05-0.15% of silicon, 0.05-0.13% of rare earth lanthanum, 0.03-0.05% of rare earth cerium and the balance of copper. The balance is copper and inevitable trace impurities; a beryllium copper alloy explosion-proof material is subjected to cold forging and pressing, forging and pressing forming, trimming and shaping, and finally high-precision grinding and heat treatment are carried out, so that the explosion-proof electric wrench accessory including a main shaft square tenon, a sleeve type movable plug and a connecting part thereof is manufactured. The raw material ratio of the beryllium-copper alloy is changed, meanwhile, precious rare metal elements, rare earth lanthanum and rare earth cerium are added, the performance parameters are improved through quick lime reduction and cold forging, and then the alloy performance is improved again through two times of heat treatment, so that the main performance parameters of the anti-explosion electric wrench product are improved by 3%-5%.

The application provides a beryllium copper alloy leftover material recycling and smelting method, and belongs to the technical field of alloy material recycling. The method comprises the following steps: performing hot cleaning on beryllium copper alloy leftover material, and then immersing the beryllium copper alloy leftover material in a metal cleaning solution; laying the immersed beryllium copper alloy leftover material on an iron plate to perform steam airing; wrapping the steam aired beryllium copper alloy leftover material, and then sequentially performing pressing and baking; performing small-power gradual large-power baking on a vacuum smelting furnace; loading the baked beryllium copper alloy leftover material block into the baked vacuum smelting furnace to perform primary vacuum smelting, and sequentially performing refining, casting and solidification to obtain a primary alloy ingot; loading the primary alloy ingot into the vacuum smelting furnace to perform secondary vacuum smelting, and sequentially performing refining, casting, solidification and cast ingot peeling to obtain a secondary alloy round ingot. The application realizes high metal yield, high cast ingot quality and reduced environmental pollution.

A positioning stage for positioning and cooling an electronic device, such as a detector in an electron microscope, is disclosed. The positioning stage includes one or more thermally conductive slidin

This invention discloses a modular, assembled electromagnetic shielding test chamber for electromagnetic shielding testing. During drawer closure, a vertical plate triggers a pry plate to rotate, pushing the plate to press against the intermediate layer, ensuring a tight fit between the beryllium copper alloy anti-leakage layer and the shielding chamber surface. This compensates for the deficiency in shielding effectiveness caused by insufficient contact pressure between the anti-leakage layer and the shielding chamber surface in the top area of ​​the drawer due to large gaps in the shielding chamber. Simultaneously, a built-in thin-film pressure sensor in the intermediate layer monitors the uniformity of the pressing pressure in real time, monitoring the tightness of contact between the anti-leakage layer and the shielding chamber, improving the reliability and efficiency of test results. Through homogenization and adjustment modules, the protrusion of the vertical plate can be flexibly adjusted according to the thinning of the intermediate layer due to aging, ensuring a tight contact between the anti-leakage layer and the shielding chamber surface.

This invention discloses a high-strength, high-conductivity beryllium copper alloy rod for limit switches and its manufacturing method, belonging to the field of electronic component manufacturing technology. Its chemical composition, by weight percentage, includes: Be: 0.10%–0.30%, Co: 0.10%–0.30%, Ni: 0.30%–0.50%, Si: 0.020%–0.040%, Mn: 0.05%–0.10%, Zr: 0.05%–0.10%, Ag: 1.00%–1.20%, RE: 0.0140%–0.0180%, Ag-SiC: 0.80%–1.20%, Cu-CNTs: 0.40%–0.80%, Pb ≤ 0.005%, Sn ≤ 0.005%, other impurity elements ≤ 0.01%, and the balance being Cu. The manufacturing method includes electroless plating of SiC and CNTs with Ag and Cu, respectively, followed by gas atomization powdering, mixing, vacuum hot pressing sintering, hot extrusion, cold drawing, and aging treatment to obtain rods. This invention achieves simultaneous improvement in strength and conductivity through the synergistic effect of low Be and metal cladding reinforcement. The finished product has a yield strength >1050MPa, tensile strength >1200MPa, elongation >4%, and conductivity >40% IACS.

The utility model discloses a positioning assembly easy to take out a workpiece, and particularly relates to the technical field of beryllium copper alloy spring processing, which comprises a workbench and a plurality of support columns fixedly connected with the bottom end of the workbench. A rotating block is arranged at one end of a rotating rod, a rotating plate is arranged on the outer wall of the rotating block, an extrusion rod is arranged on the outer wall of the rotating plate, a fixed rod is arranged in a groove, a movable plate is arranged on the outer wall of the fixed rod, a movable plate is arranged on the outer wall of the movable plate, and an extrusion groove is formed in the outer wall of the movable plate, so that the movable plate can drive the movable plate to move. When the beryllium-copper alloy spring raw material is processed, the position of the beryllium-copper alloy spring raw material needs to be extruded and fixed through the positioning assembly, and the two half clamps in the assembly can be mutually clamped and fixed, so that the position of the beryllium-copper alloy spring raw material is fixed, and the beryllium-copper alloy spring raw material in the two half clamps is convenient to take out.

The invention provides a vacuum constant-temperature semi-continuous casting system and method for a beryllium-copper alloy ingot blank, and relates to the technical field of copper alloy casting. The casting system comprises a vacuum furnace, a launder, a crystallizer, a vertical continuous casting dummy ingot mechanism and a heat preservation bag capable of achieving on-line heating and heat preservation functions. The beryllium-copper alloy molten metal is obtained through smelting of a vacuum induction furnace, part of the obtained beryllium-copper alloy molten metal is poured into a launder and drained into a heat preservation bag through the launder, a preset number of beryllium-copper alloy molten metal is stored in the heat preservation bag, and a crystallizer is placed below the heat preservation bag; and a plug rod flow control device is adopted to control the flow of the beryllium copper alloy molten metal flowing into the crystallizer. Constant-temperature casting is achieved, the appearance quality of a cast ingot is good, and the consistency of the internal structure of an ingot blank is better; the chemical component uniformity of the ingot blank is improved, and after the ingot blank is processed, the performance stability of a finished product is also greatly improved; the metal burning loss is reduced, the material transfer temperature is reduced, and the production cost is saved.

The invention discloses a method for preparing a mother alloy for beryllium bronze from beryllium copper residues, and belongs to the technical field of beryllium bronze preparation. The method comprises the following steps: crushing a filter screen bonding material and a furnace bonding material, and screening to obtain particles; the screened particles of the binding material and the binding furnace material are pressed, and blocky beryllium copper residual materials are obtained; the preparation method comprises the following steps: preparing blocky beryllium copper residual materials and electrolytic copper according to a beryllium copper master alloy to be prepared, and then drying; the dried blocky beryllium copper residues and electrolytic copper are put into a crucible of a vacuum induction melting furnace, gradient heating melting is carried out in a vacuum state, and molten metal is obtained; the molten metal is heated, refined and fully stirred, then protective gas is inflated into the vacuum induction melting furnace to reach the atmospheric pressure, and after standing is conducted, dross on the surface of the molten metal is removed; and the molten metal with the scum removed from the surface is cast into a mold, demolding is conducted after natural cooling, and the beryllium-copper master alloy is obtained. The beryllium content of the mother alloy for beryllium bronze is high, and the preparation requirement of the high-beryllium beryllium copper alloy can be met.

The application provides a preparation method of a high-beryllium-content beryllium copper alloy material, which comprises the following steps: melting metal raw materials containing pure copper and a beryllium copper master alloy to obtain an alloy liquid, casting the alloy liquid to obtain an ingot, uniformly treating the ingot to obtain a homogenized casting blank, hot-rolling the homogenized casting blank to obtain a hot-rolled blank, annealing the hot-rolled blank to obtain an annealed blank, performing a cyclic "cold rolling-intermediate annealing" process on the annealed blank, and finally performing finish rolling and product annealing on the alloy strip to prepare the high-beryllium-content beryllium copper alloy material. The method can solve the problems of the second phase component of the high-beryllium-content strip being inconsistent, the strip being cracked, side-bent and wrinkled, and a large number of processing passes in the prior art.

The utility model relates to nut structure device technical field provides a nut structure of anti -loosening, including upper anti -loosening nut, the upper anti -loosening nut inner surface is equipped with upper through -hole, first thread groove, the inner surface of upper through -hole is equipped with, beryllium copper alloy fastening block and pressure chamber contact, the pressure chamber exerts pressure to beryllium copper alloy fastening block surface in the process of rotation, beryllium copper alloy fastening block is deformed to the outside bolt center direction under the pressure of pressure chamber, improve the friction and fastening between second thread groove and the surface thread of outside bolt, reach the effect of anti -loosening, a plurality of compensation incisions on beryllium copper alloy fastening block are beryllium copper alloy fastening block inward deformation reserve space, first friction particle and second friction particle adopt quartz sand material, can significantly increase the friction resistance between pressure chamber and beryllium copper alloy fastening block, upper antiskid sealing pad and lower antiskid sealing pad contact tight pressure, avoid upper anti -loosening nut and lower anti -loosening nut relatively rotate.

The utility model discloses a beryllium copper alloy heat-conducting high-speed extrusion mold, which belongs to the technical field of plastic processing and comprises a mold mounting component, a discharging mold component, an extrusion mold component and a feeding mold component. A discharging die assembly used for limiting the shape during discharging, an extrusion die assembly used for conducting extrusion forming on materials and a feeding die assembly used for feeding are installed on the die installation assembly, and the extrusion die assembly is located between the discharging die assembly and the feeding die assembly. The mold mounting assembly includes a housing member and a locking member. By means of the mode, the discharging die assembly, the extrusion die assembly and the feeding die assembly are limited through the shell component, the feeding die assembly is locked through the locking component, the discharging die assembly, the extrusion die assembly and the feeding die assembly can be more tightly attached when subjected to extrusion force on the left side, and raw materials are prevented from being stressed dispersedly; the structural stability is improved, and the raw material passing speed is increased.

The invention discloses beryllium copper alloy casting forming equipment and a using method thereof, and relates to the technical field of copper alloy casting, the beryllium copper alloy casting forming equipment comprises a smelting furnace, a conveying pipeline, a casting cavity and a melt buffering and pressure stabilizing assembly, an outlet of the smelting furnace communicates with an inlet of the conveying pipeline, and the melt buffering and pressure stabilizing assembly is installed at an outlet of the conveying pipeline through a connecting flange; an outlet of the melt buffering and pressure stabilizing assembly is communicated with a casting cavity sprue, and the melt buffering and pressure stabilizing assembly comprises a buffering cavity, an elastic membrane, a pressure adjusting piston and a reset spring. The molten liquid buffering and pressure stabilizing assembly is installed, so that the functions of dynamic absorption and pressure stabilizing of alloy liquid pressure pulsation are achieved, the problem of pouring turbulence caused by the fact that pressure fluctuation of a smelting furnace is directly transmitted to a cavity is solved, the defects of air holes and slag inclusion are remarkably reduced, and the internal density and mechanical property consistency of castings are improved.

The invention relates to the technical field of metal material processing, and discloses a preparation method of a composite beryllium-copper alloy wire through spray co-deposition rolling. The hard phase TiB2 is added, the grain size is regulated and controlled, the high-temperature softening-resistant temperature and the stress relaxation resistance are improved, the TiB2 powder with the size being 500-800 nm is added through spray co-deposition, the phase thermodynamic stability can be enhanced, and therefore the high-temperature softening-resistant temperature of the beryllium-copper alloy is improved. TiB2 is used as a nucleation particle, fine and uniformly dispersed crystal grains can be generated, the crystal boundary is increased, dislocation movement and slippage are hindered, and the stress relaxation resistance of the beryllium-copper alloy is further improved.

The invention discloses an intelligent smelting furnace for beryllium copper alloy preparation and a using method thereof.The intelligent smelting furnace comprises a furnace shell, a furnace body is embedded in the furnace shell, an induction coil is arranged between the outer wall of the furnace body and the inner wall of the furnace shell, and a uniform module is arranged in the furnace body and comprises a hollow rod, a first arc plate and a second arc plate; a connecting block is embedded into one end of the first arc plate, a second arc plate is connected to the right end of the connecting block, a conical ring is embedded into the left end of the connecting block, and a temperature detection module is arranged in the furnace body. The uniform module is installed, when the temperature stratification phenomenon occurs in the furnace charge heating process, a hollow rod drives an arc plate I and an arc plate II to rotate, then the arc plate II is pushed by a rotating frame to rotate to be in an inclined state, the flowing furnace charge is guided through the arc plate II, the purpose of adjusting the flowing path of the furnace charge is achieved, the furnace charge is uniformly mixed, and the furnace charge heating efficiency is improved. Therefore, the furnace charge temperature is consistent, the phenomenon of uneven heating of the furnace charge is avoided, and the quality of the beryllium copper alloy is improved.

The utility model discloses a novel explosion-proof motor aluminum end cover, which comprises an aluminum end cover body, the aluminum end cover body comprises a base layer, a first heat-resistant layer, a second heat-resistant layer, a first explosion-proof layer, a second explosion-proof layer, a first corrosion-resistant layer and a second corrosion-resistant layer, and the top of the base layer is fixedly connected with the first heat-resistant layer. According to the aluminum end cover, the aluminum end cover body, the base layer, the first heat-resistant layer, the second heat-resistant layer, the first explosion-proof layer, the fluorinated epoxy resin layer, the carbon fiber layer, the beryllium copper alloy layer, the modified polyester resin coating, the second explosion-proof layer, the first corrosion-resistant layer and the second corrosion-resistant layer are matched with one another, so that the explosion-proof performance of the aluminum end cover body is greatly improved, and multiple requirements can be met; the device is high in practicability and worthy of popularization.

The present invention belongs to the technical field of beryllium-free copper alloy materials, and provides an ultra-high-strength conductive copper-titanium alloy and a preparation method thereof. The present invention takes Cu as the matrix, adds Cr and Mg, effectively improves the strength and conductivity of the alloy, Mg is solid-dissolved in the matrix, plays a solid solution strengthening role, Cr and Ti can form Cr2Ti intermetallic compounds, thereby improving the strength and conductivity of the alloy; combined with combined aging treatment, the volume fraction of β-Cu4Ti precipitated phase can be increased while reducing production costs, thereby greatly improving the conductivity of the alloy; combined with hot rolling and cold rolling, it is beneficial to obtain a high-density, uniformly distributed β-Cu4Ti phase, thereby improving the strength and conductivity of the copper-titanium alloy. The results of the embodiment show that the hardness of the ultra-high-strength conductive copper-titanium alloy prepared by the preparation method provided by the present invention can reach 310HV, and the conductivity can reach 35%IACS.

The invention discloses a method for preparing beryllium-copper master alloy from beryllium cloth bag powder waste, and belongs to the technical field of metal materials, the method comprises the following steps: filling the beryllium cloth bag powder waste, pure copper powder, a grinding aid and zirconium oxide balls into a bin body of a horizontal stirring ball mill, and then carrying out ball milling under the protection of inert gas to obtain beryllium-copper mixed powder; the beryllium-copper mixed powder is loaded into a cold pressing mold to be subjected to cold pressing forming, and a beryllium-copper round cake is obtained; burdening the beryllium copper round cake and electrolytic copper according to the beryllium and copper contents in the beryllium copper mother alloy, filling a crucible of a vacuum suspension smelting furnace, and carrying out vacuum suspension smelting under the protection of strong cold circulating water to obtain beryllium copper alloy liquid; and then turning over the crucible, casting the beryllium copper alloy liquid into the mold in vacuum, cooling to a certain temperature, opening the furnace, and air-cooling to the room temperature. The beryllium copper master alloy is uniform in component, few in impurity element, high in purity and low in oxygen content, the technological process is short, energy consumption is low, and high-value utilization of beryllium cloth bag powder is achieved.