719 results about "Brass" patented technology

The invention relates to the technical field of powder metallurgy, in particular to a preparation process of a graphene composite profile prepared from brass waste, which comprises the following steps: selecting the brass waste containing different components according to the application scene of the graphene composite profile; the brass waste materials are smashed into brass block-shaped smashed materials; the preparation method comprises the following steps: adding 0.001-10% by mass of graphene into the brass block-shaped crushed aggregates, and carrying out wet ball milling to form a first-size mixed powder liquid; carrying out semi-solid rotary shearing and stirring processing on the mixture; and continuously extruding the graphene-brass mixed base material to form a graphene composite profile blank, and carrying out post-process to obtain the graphene composite profile capable of overcoming brass spot, line and surface defects. According to the invention, a powder metallurgy process is combined with a medium-temperature continuous extrusion process, so that the brass waste is efficiently and directly recycled without pollution, and the physical properties and chemical properties such as hardness, strength, conductivity, corrosion resistance and high-temperature creep resistance of the composite material are greatly improved. The invention further correspondingly discloses the graphene composite profile and application.

A novel hinge welding and positioning tool comprises a copper rod, a brass plate installed on the copper rod and a red copper plate arranged on the brass plate, an execution command comprises a jacking air cylinder, a cylindrical rod fixed to the jacking air cylinder and an air cylinder top plate of the cylindrical rod, and the cylindrical rod and the air cylinder top plate are vertically arranged; during use, a to-be-welded plate and a hinge positioning hole are combined and then placed on the plane of the red copper plate, the jacking air cylinder is controlled by an air channel of the throttling valve to execute actions, jacking is conducted from the bottom face of the red copper plate, and therefore the space position concentricity of the hinge and the plate is limited and fixed. Plate welding can be carried out through a welding robot or other manual welding machines and the like, after welding is completed, the jacking air cylinder returns to the zero position, after the cylindrical rod is loosened, the material taking action is manually completed, the jacking air cylinder can stretch out and draw back or jack up according to the actual situation, a welding tool does not need to be replaced due to product replacement, plate welding can be carried out according to various situations, and the welding efficiency is improved. And the technical effect of efficient and rapid plate welding operation is achieved.

The bimetallic welding method comprises the steps that a plurality of annular grooves are formed in the surface, welded to a copper plate, of a steel base body, and a plurality of annular protrusions are formed on the surface of the steel base body; the steel substrate is placed on the lower electrode, and the copper plate is placed on the annular protrusion on the surface of the steel substrate; an upper electrode is placed on the copper plate, and set pressure is applied to the upper electrode; after the set pressure is reached, electrifying the upper electrode, and heating the annular bulge on the surface of the steel substrate to a molten or plastic state according to the generated resistance heat, so that the annular bulge is combined with the copper plate to finish welding; according to the double-metal welding method, the high-pressure energy storage welding process is used for replacing an original silver welding process using precious metal such as silver, and the cost is greatly reduced. Brass is used for welding, the welding method can be applied to the working condition higher than 400 bar, the abrasion resistance is high, and the product performance is improved.

To provide a lead-free brass alloy with improved dezincification resistance that can be produced cost-effectively indeed.SOLUTION: A copper-zinc alloy contains 66.0 to 73.0 wt.% of Cu, 1.5 to 2.5 wt.% of Si, 0.01 to 0.15 wt.% of P, at most 0.1 wt.% of Pb, and balance zinc and unavoidable impurities.SELECTED DRAWING: Figure 1

The invention provides a flotation separation method for complex and difficult-to-separate high-sulfur copper ore, and belongs to the field of mineral flotation, lime is adopted to adjust ore pulp to a low-alkali environment, and efficient recovery of valuable elements of copper, silver and sulfur is achieved under the combined action of an inhibitor and a synergist. A low-alkali copper separation process is adopted, copper-sulfur intergrowth and silver-containing minerals are prevented from being strongly inhibited in a high-alkali ore pulp environment, regrinding is introduced before copper concentration operation to promote dissociation of the copper-sulfur intergrowth, and the grade of copper concentrate is improved. During copper roughing, gangue minerals and pyrite are inhibited by adopting an inhibitor to prevent the gangue minerals and the pyrite from forming a cover on the surface of metal minerals, and selective inhibition on the pyrite is generated in the forms of strong oxidation, electrostatic adsorption, hydroxylated metal point adsorption and the like on the surface of the pyrite; the synergist is adopted to change the surface charge of gangue minerals, the argillaceous gangue is prevented from forming a mucus coating on the surface of the chalcopyrite by means of electrostatic repulsion, meanwhile, the flotation froth performance is enhanced, floating of the chalcopyrite is accelerated, and the copper separation effect is optimized.

The invention relates to the technical field of friction plates for vehicles, and particularly discloses a resin-based friction plate for an aluminum-ceramic brake disc and a preparation method of the resin-based friction plate for the aluminum-ceramic brake disc. Steel fibers serve as a main reinforcing phase, the structural strength of the material is improved, and meanwhile the steel fibers are good friction increasing materials; the reduced iron powder can improve the heat-conducting property of the brake pad and reduce the decline of the friction coefficient at high temperature; the red copper powder and the brass powder are good lubricants, the stability of single braking can be improved, and meanwhile abrasion is reduced; the silicon carbide mainly plays a role in increasing the high-temperature friction coefficient; molybdenum disulfide is beneficial for improving the recovery performance after high-temperature decline and reducing abrasion; antimony sulfide is lubricated at high temperature, and the friction coefficient in the decline stage is increased; silicon carbide is a high-hardness material, so that the friction coefficient is increased; the potassium magnesium titanate lamellar crystal improves the damping characteristic of the material and absorbs vibration and reduces noise, and the resin-based friction plate has the advantages of being high in strength, good in heat conduction, stable in friction performance, resistant to abrasion, comfortable in braking and the like and meets the use requirement of an aluminum ceramic brake disc.

The invention relates to a lead-free brass alloy for use in the manufacture of components for use in the lock and key industry and in the sanitary sector, comprising 1 - 45% zinc, 0.01 - 1% sulfur, 0.05 - 2% manganese, optionally including one or more other elements totaling 0.001 - 5%, and copper as the remaining portion to total 100%.

The present invention provides an outdoor unit of a heat pump unit, comprising: a fin heat exchanger, including a left end plate, a right end plate and fins, wherein a first heat exchange component and a second heat exchange component are sequentially arranged in the fins from top to bottom, the first heat exchange component includes m first heat exchange copper tubes stacked from top to bottom, and the second heat exchange component includes n second heat exchange copper tubes stacked from top to bottom; a gas collecting pipe, and the first ends of the m first heat exchange copper tubes and the n second heat exchange copper tubes are all connected to the gas collecting pipe; a liquid separation component, including a first liquid separation pipe, a second liquid separation pipe and a first one-way valve, the second liquid separation pipe is connected to the first liquid separation pipe through the first one-way valve, and the flow direction of the first one-way valve is from the second liquid separation pipe to the first liquid separation pipe; the first liquid separation pipe includes a brass distributor, the brass distributor is connected to the second ends of the m first heat exchange copper tubes and the second liquid separation pipe through pipelines, and the second liquid separation pipe is connected to the second ends of the n second heat exchange copper tubes through pipelines, and it has good defrosting effect.

The invention discloses a rope forming process of a 2 / 7UT ultrahigh-strength steel wire cord, which comprises the following steps: (1) carrying out dry drawing on an 86C wire rod with the diameter of 5.5 mm to obtain a dry-drawn steel wire; (2) carrying out austenitizing treatment on the dry steel wire, carrying out electroplating and thermal diffusion to obtain a brass wire plated with a copper-zinc alloy on the surface, and taking up the brass wire on a spool; (3) wet-drawn steel wires are obtained through wet-drawing equipment, the wet-drawn steel wires are subjected to 23-pass drawing in total, a 21 'die, a 22' die and a 23 'die are additionally arranged in the 21 pass, the 22 pass and the 23 pass respectively, and the 21' die, the 22 'die and the 23' die are located between the corresponding current-pass die and the previous-pass die respectively; and (4) taking two wet drawing steel wires as an inner layer, taking seven wet drawing steel wires as an outer layer, and performing one-time twisting forming according to the same twisting direction and the same twisting length. Compared with 6 * 1 UT, the breaking force and the diameter are equivalent, the 2 / 7 CCUT manufacturing process requirement is lower, the cord thread finished product quality is higher, process adjustment can be reduced, and cost can be reduced; and meanwhile, the structure is fully glued, so that internal gaps are reduced under the condition of ensuring the adhesive force.

The invention discloses an efficient refining method for red impure copper. The efficient refining method comprises the following steps: (1) preparing calcium-cerium composite oxide powder; (2) preparing boron-phosphorus doped powder; (3) preparing a refining auxiliary agent; (4) red impure copper is put into a crucible, a medium-frequency induction furnace is adopted for heating and melting the red impure copper into a melt, the melt is covered with charcoal after being completely melted, the temperature of the melt is kept at 1110-1120 DEG C, then the refining auxiliary is added, and the mass ratio of the refining auxiliary to the melt is (3-4) kg: 1 t; and after charging, stirring the melt at a constant temperature of 1110-1120 DEG C for 10 minutes, then standing for 15 minutes, deslagging, casting and molding to obtain the refined impure red copper. After refining through the method, the tensile strength and the electric conductivity of the impure red copper can be remarkably improved, and the use performance of the impure red copper is improved.

A one-piece lens barrel having high sealing performance includes: a front shell and a bottom shell arranged at a middle of a bottom end of the front shell. Each of the front shell and the bottom shell is a one-piece and integral structure; and the front shell and bottom shell are fixedly connected to each other by laser soldering. A motherboard assembly is disposed at a middle of an inner cavity defined by the front shell and the bottom shell. At least three sets of positioning posts are connected to edges of a periphery of the motherboard assembly. and the at least three sets of positioning posts are uniformly distributed. The positioning posts are made of brass, and a surface of each positioning post is electroplated with tin.

The invention discloses a multi-directional combined extrusion forming method for an environment-friendly lead-free copper profiled bar, and relates to the technical field of profiled bar processing, and the method comprises the following steps: S1, blank preparation: selecting a lead-free copper alloy blank, pretreating the surface of the blank, and removing an oxide layer and impurities; s2, die assembly is conducted, specifically, a combined multi-directional die is adopted and comprises an axial extrusion die, a radial extrusion die and an angle-adjustable circumferential auxiliary die, all the dies are connected through high-precision positioning devices, and the relative position precision of the dies in the extrusion process is ensured; and S3, multidirectional preheating is conducted, specifically, the assembled mold and blank are placed in a multidirectional heating furnace, multidirectional uniform preheating is conducted on the blank, the heating rate is controlled to be 5-10 DEG C / min, the temperature of the blank reaches 650-750 DEG C, and meanwhile the temperature of the mold is kept to be 550-650 DEG C. Through time sequence cooperation of axial, radial and circumferential pressure, a three-way pressure stress field is formed in the blank, and the problem of hot cracking of lead-free alloys such as bismuth brass caused by a grain boundary brittle phase is effectively inhibited.

The present invention relates to a lead-free brass alloy comprising: 55 to 59% by weight of Cu, 2.0 to 2.5% by weight of Mn, 0.65 to 1.5% by weight of Si, less than 0.1% by weight of Pb, the remainder being Zn and unavoidable impurities. The invention further relates to a machine element which is produced from the lead-free brass alloy.

A wire electrical discharge machining (WEDM)-adapted wire electrode includes a core material composed of brass having a zinc concentration of greater than 40 mass %, and a coating layer covering a periphery of the core material, wherein the coating layer is composed of brass having a zinc concentration higher than the zinc concentration of the core material and of 44 mass % or more and 50 mass % or less, and wherein a ratio of a thickness of the coating layer to a diameter of the WEDM-adapted wire electrode is 2% or more and 20% or less.

The invention discloses a wind generating set blade lightning protection resistor detection tool and detection method in the technical field of wind power generation equipment detection, and the wind generating set blade lightning protection resistor detection tool is of a hollow elliptical conical brass skeleton matched pure copper wire mesh structure. The profile curve is matched with the appearance of the blade tip of the wind generating set, and fixed connecting points are arranged on the two sides of the cone bottom and the cone top of the brass framework. High-strength brass is adopted as a framework structure, and the stability and durability of the tool are ensured by means of the excellent mechanical property of the high-strength brass; meanwhile, a low-resistance pure copper wire mesh is selected as a conductive part, so that the high efficiency of current conduction is guaranteed. And three fixed connection points are elaborately designed on the two sides and the top of the brass framework, so that the tool can be conveniently and stably mounted and fixed with a detected part, the reliability of the tool in the use process is ensured, and great convenience is provided for field detection operation.

The invention belongs to the technical field of copper alloys, and particularly relates to a method for regulating and controlling a copper alloy texture through gradient temperature control deformation. The method for regulating and controlling the copper alloy texture through gradient gradient temperature control deformation comprises the following step that gradient gradient temperature control deformation is conducted on a copper-based material. According to the method, the texture type and distribution can be effectively regulated and controlled, and the Brass texture content is greatly reduced; in addition, by means of the method, the content of the Y texture beneficial to plasticity can be increased, and the plastic deformation capacity of the copper alloy is greatly enhanced on the basis that the strength of the copper alloy is kept.

A metallic strength member rubberized with a sulfur-crosslinkable, essentially cobalt-free rubberization mixture, wherein the metallic strength member is a steel cord containing one or more filaments, wherein the filaments include a steel substrate filament and a coating that partly or completely covers the steel substrate filament, wherein the coating includes brass consisting of copper and zinc, and wherein the coating is enriched with iron in the form of particles having a size between 10 and 10 000 nm in the brass. In order to optimize vulcanization times, the rubberization mixture contains 0.5 to 3 phr of at least one sulfenimide accelerator and / or at least one dibenzylamine-based sulfenamide accelerator.

According to the preparation method of the free-cutting lead brass alloy, trace elements such as tellurium, cobalt, samarium and selenium are added into lead brass, the tellurium, the selenium and the like can easily form low-melting-point compounds with other elements, grain growth can be inhibited, dispersed distribution of fine lead particles is promoted, stress concentration is reduced, and the cutting performance is improved; by adding cobalt, samarium and the like, grain refinement is facilitated, distribution and forms of selenium, tellurium and other elements are changed, alloy fluidity is promoted, dispersed distribution of lead and the like is promoted to be more uniform, the cutting performance is further improved, in addition, dissolution of lead can be inhibited through the passive film layer, the environment-friendly performance is improved, and harm caused by dissolution of lead is reduced.

The invention relates to the technical field of metallurgy, and provides brass and a preparation method thereof.The preparation raw materials of the brass comprise the following components of 0.05-0.15 wt% of Al, 0.05-0.15 wt% of Cu, 0.05-0.15 wt% of Ti, 0.05- Si, 0.05 wt% to 0.15 wt%; 0.05 to 0.12 wt% of Fe; sn, 0.03 wt% to 0.20 wt%; 0.40 to 2 wt% of Bi; 0.40 to 2 weight percent of In; 32 to 45 wt% of Zn; and the balance of Cu. The brass prepared through the composition proportion of all the preparation raw materials has a stable alpha phase, a stable beta phase and a stable In-rich phase, the alpha phase is a matrix phase, the beta phase is distributed in the alpha phase, the In-rich phase is distributed in the alpha phase and at the grain boundary, the cutting performance of the brass can be improved while the strength, wear resistance and corrosion resistance of the brass are guaranteed, and the service life of the brass is prolonged. And a brass product prepared from the brass prepared from the elements greatly reduces pollution and harm to the environment and human bodies.

The invention relates to the technical field of metal connection, and discloses a welding forming process of an aluminum alloy copper bar and a terminal, which comprises the following steps: sequentially carrying out mechanical cleaning, chemical oil removal and chemical activation pretreatment on the surfaces to be welded of an aluminum alloy base material and a brass terminal; the aluminum-based brazing filler metal foil and the potassium fluoroaluminate scaling powder are sequentially arranged between the aluminum alloy base material and the brass terminal, and an assembly to be welded is assembled; and finally, placing the assembly in hot pressing equipment under vacuum or inert atmosphere protection, carrying out constant-temperature and constant-pressure treatment at the temperature of 600-630 DEG C and under the pressure of 5-15 MPa, cooling, relieving the pressure, and molding. According to the method, a metallurgical bonding transition layer which is compact in structure and free of welding defects is formed at an aluminum-copper dissimilar metal interface under the combined action of liquid-phase filling and solid-phase diffusion, and a prepared welding joint has mechanical shear strength superior to that of an aluminum alloy base material and extremely low interface contact resistance; and reliable connection with high strength and high conductivity is realized.

The invention belongs to the technical field of anti-freezing solutions, particularly relates to an anti-freezing cooling liquid and a preparation method and application thereof, and provides an all-organic heat transfer system anti-freezing cooling liquid which contains efficient all-organic adsorption acid and an anti-corrosion inhibition additive, has better anti-corrosion and anti-rust capabilities on various metals, and has a good anti-freezing effect. And the anti-corrosion agent has excellent anti-rust function for soldering tin, cast aluminum, cast iron, steel, brass, red copper and the like, especially the anti-corrosion performance of a wet cylinder sleeve of a heavy-duty vehicle. The lubricating oil has excellent cavitation erosion resistance and pitting corrosion resistance, and has an excellent protection effect on an engine cooling system. The anti-freezing cooling liquid product is free of precipitates, stable in performance, safe, non-toxic, green and environment-friendly.

The utility model provides an impurity removal device during brass strip smelting, and relates to the technical field of impurity removal devices, the impurity removal device comprises a bottom plate, a smelting furnace is fixedly connected to the bottom plate, a removal structure is arranged on the bottom plate, the removal structure mainly comprises a hydraulic cylinder, the hydraulic cylinder is rotatably connected to the bottom plate, and the hydraulic cylinder is connected to the bottom plate. A rectangular plate is fixedly connected to a piston rod of the hydraulic cylinder, a first motor is fixedly connected to the rectangular plate, a rotating rod is fixedly connected to an output shaft of the first motor, a movable plate is fixedly connected to the rotating rod, a fixed plate is rotatably connected to the rotating rod, and a fixed column is fixedly connected to the fixed plate; the utility model solves the problem that at present, most workers stand beside the smelting furnace and hold a slag salvaging shovel to salvage out impurities in the smelting furnace, and the temperature of brass solution in the smelting furnace is extremely high, so that the workers are easily scalded.

The invention provides a design method of a special fixture for energy storage spot welding positioning based on a guide vane assembly, which comprises the following steps of: determining an energy storage spot welding process route, firstly spot-welding a partition plate I and a partition plate II, secondly spot-welding a honeycomb, and then spot-welding and combining with a main body part. Determining a part positioning reference, and selecting the excircle of the part as a positioning reference surface; a point electrode holder material is selected, and brass or red copper is selected as the point electrode holder material. A detachable point electrode base is designed, the first partition plate and the second partition plate are preferentially assembled in the spot welding process, the partition plate assembly is formed, welding points are increased, the welding strength is improved, and the honeycomb assembly is formed. The method has the advantages that the stability and inclusiveness are considered while the dimensional precision of the part is guaranteed, and the spot welding efficiency is improved. Through the adaptive radian, the integrating degree between the honeycomb and the partition plate is improved, the stress strength of parts during energy storage spot welding is improved, the bonding strength between the parts is enhanced, deformation of the partition plate and the honeycomb is reduced, and the vacuum brazing quality of the parts is improved.

The invention relates to a high-wettability brass flux-cored brazing filler metal and a preparation method thereof. According to the high-wettability brass flux-cored brazing filler metal, Sn powder, Ni powder and Sn-Ni composite metal powder with different weight ratios are added into a brass flux-cored brazing flux respectively, so that the melting speed of a brass flux core is reduced, the wettability spreading performance is improved, and the tensile strength of a weld joint is improved; the weight ratios of the added Sn powder are 0%, 3%, 5%, 7%, 10%, 15% and 20% respectively, the weight ratios of the added Ni powder are 10%, 20%, 30%, 40% and 50% respectively, the weight ratios of the added Sn-Ni composite powder are 0 wt.% Sn to 0 wt.% Sn, 0 wt.% Sn to 10 wt.% Sn, 3 wt.% Sn to 0 wt.% Sn and 3 wt.% Sn to 10 wt.% Sn, and all the components are the weight percentages of the alloy powder in the brazing flux. The optimal weight ratio of the added Sn-Ni composite metal powder is 3 wt.% Sn-10 wt.% Sn, at the moment, the wettability and the joint tensile strength are remarkably improved, the melting temperature interval is reduced, and therefore the brazing quality and efficiency are improved, and the brazing technology is improved.

The invention relates to a high-strength heat-resistant brass alloy and a preparation method thereof, and belongs to the technical field of copper alloys. The high-strength heat-resistant brass alloy comprises, by mass, 69%-75% of Cu, 0.1%-1% of Sn, 1%-4% of Al, 0.5%-1.5% of Ni, 0.5%-1% of Fe and the balance Zn. The high-strength heat-resistant brass alloy comprises a core-shell structure precipitated phase with Fe wrapped by NiAl. The preparation method comprises the following steps: step 1, preparing materials; step 2, smelting; step 3, casting; fourthly, hot rolling is conducted after high-temperature solid solution; fifthly, a roughly-rolled plate is obtained through cold rolling; step 6, softening and annealing; seventhly, a finish-rolled plate is obtained through cold rolling; and step 8, performing stress relief annealing to obtain the high-strength heat-resistant brass alloy. By reasonably selecting alloy components and further regulating and controlling the heat treatment process, the brass alloy has high strength, high elongation, high hardness, high-temperature stability and excellent electric conductivity.

The invention relates to a preparation method of a double-layer high-temperature adhesive for connecting brass and aluminum oxide, which comprises the following steps: reacting aluminum hydroxide, zirconium hydroxide and dilute phosphoric acid to prepare an aluminum zirconium phosphate adhesive base solution, and compounding silicon powder, boron carbide, titanium powder, nickel powder and the adhesive base solution to prepare a special adhesive for coating a brass surface. And compounding silicon powder, boron carbide, titanium powder, nickel powder, aluminum oxide and the gum base solution to prepare the special adhesive for aluminum oxide surface coating. The brass surface coating special glue is brushed on the brass surface and cured, then the aluminum oxide surface coating special glue is brushed on the aluminum oxide surface, the brass coated with the adhesive and the aluminum oxide coated with the adhesive are attached together in the mode that the bonding surfaces are opposite, and the brass / aluminum oxide double-layer bonding piece is obtained after pressing and curing and can serve in the high-temperature environment. The method has the advantages that the special glue for brass surface coating and the special glue for aluminum oxide surface coating have high thermal expansion coefficient matching with brass and aluminum oxide, and thermal stress can be relieved; the double-layer adhesive can provide the bonding strength which can reach 1.3 MPa at the temperature of 500 DEG C.

The invention relates to the technical field of metallurgy, and provides a high-strength wear-resistant brass alloy and a preparation method thereof.The preparation raw materials of the high-strength wear-resistant brass alloy comprise 35-40 wt% of Zn; 1 to 5 wt% of Ni; 1 to 3 weight percent of Mn; 0.5 to 1 wt% of Si; 0.3 to 1 wt% of Pb; and 50 to 60 wt% of Cu. Through the synergistic effect of the elements, the preparation and processing difficulty of the high-strength wear-resistant brass alloy is reduced, and the prepared high-strength wear-resistant brass alloy has high strength and excellent wear resistance.

The utility model relates to the technical field of brass bar cutting, in particular to an anti-deformation brass bar cutting device.A clamping device comprises a long groove, two sliding plates are slidably connected into the long groove, a U-shaped plate is fixedly installed on the surface of the end, away from the long groove, of each sliding plate, and a threaded rod is rotationally connected between the inner walls of the two ends of each U-shaped plate; a rotating wheel is fixedly installed on the surface of the threaded rod, two moving plates are slidably connected to the surface of the U-shaped rod, a spring is fixedly installed between the two moving plates, a through groove is formed in the surface of the arc-shaped outer wall of the outer clamping ring, hinge plates are hinged to the bottom surfaces of the moving plates, and the ends, away from the moving plates, of the hinge plates penetrate through the through groove to be hinged to an inner clamping ring. The brass bar cutting device solves the problems that a clamping device of an existing brass bar cutting device always conducts rigid clamping, when a brass bar is transversely stressed (such as cutting), the contact portion of the brass bar and a clamp is prone to extrusion deformation, the cut brass bar is irregular in shape, and follow-up machining is not facilitated.

A brazed joint that can suppress the decrease in joint strength even when brass (50, 60) containing bismuth instead of lead and stainless steel (10) are joined by brazing with a solder material, and a method for producing the brazed joint are provided.A brazed joint made of stainless steel (10) and brass (50, 60), provided with a layered structure in which stainless steel (10), a first brazing material layer (20), a barrier layer (30), a second brazing material layer (40) and brass (50, 60) are arranged successively in layers, wherein the barrier layer (30) is a layer that blocks the transfer of bismuth in the brass (50, 60) to the first brazing material layer (20) by brazing the stainless steel (10) and the brass (50, 60), wherein the barrier layer (30) contains at least either a brass (50, 60) or a phosphor bronze, and a brazing material from which the first brazing material layer (20) and the second brazing material layer (40) consist is liquid at 680 to 800°C.

The invention belongs to the technical field of design and preparation of copper alloy materials, particularly relates to a light brass material and a preparation method thereof, and designs and prepares brass of a new alloy system, namely the light brass material. The density of the light brass material ranges from 7.01 g / cm < 3 > to 7.73 g / cm < 3 >, and compared with existing copper-zinc alloy brass, the density is reduced by 19.5%, the mass of the same volume is reduced by about 1 / 5, and light weight of the brass material is achieved. The light brass material can be provided for the aerospace field, the specific gravity of the brass component is effectively reduced, and the light weight of the brass component is achieved.