232 results about "Copper-clad steel" patented technology

A high melting point exothermic welding flux for a copper-clad steel/copper grounding grid belongs to the metal welding field. The existing exothermic welding flux for welding copper-clad steel has the defects of lower melting point of the metal on a joint than the temperature of a base material, poor structural uniformity and the like. The exothermic welding flux comprises the following components by weight percent: 50-60% of copper oxide, 9-10% of aluminium metal powder, 20-35% of copper metal powder, 3-4% of fluorite powder, 2-3% of tin metal powder, 0-5% of nickel metal powder and the balance alloy powder. The exothermic welding flux has the melting temperature close to that of the base metal, and can assure that a grounding body formed by the joint and the base material has even reliability.

The invention relates to a high-strength copper-clad steel conductor. A production technique of a high-strength copper-clad steel conductor used for an inner core wire of a coaxial cable is characterized by comprising the following steps: rough drawing, medium temperature tempering, oxide layer removal, fine drawing, treatment before electro-deposition, acid electrolysis, washing, pretreatment of electro-deposition, washing, thick treatment of the electro-deposition, washing, oxidation protection, drying, tank wire drawing, washing, oxidation protection, drying and collecting lines and tray filling. Physical properties such as tensile strength, elongation, small reduction of area and bending times of the high-strength copper-clad steel conductor produced by the technique are enhanced.

The invention discloses a production method of tin-bismuth alloy coated copper clad steel wires, which successively comprises acid pickling and rust protection treatment, first pullout treatment, first heat treatment, second pullout treatment, second heat treatment and tin electroplating. The tin electroplating means tin-bismuth alloy electroplating. The invention can effectively prevent tin pest, can substitute for leaded wires to be applied to lead wires, connecting wires and the like of electronic products, and can be widely applied to the field of the electronic products.

The invention provides a hot-melt welding flux for copper-clad steel grounding net welding, which belongs to the field of metal welding. The prior hot-melt welding flux for copper-clad steel grounding net welding has the problems of violent reaction, huge heat release, high noise, poor corrosion resistance and the like. The hot-melt welding flux consists of hot-melt solder and detonator, wherein the hot-melt solder consists of the following materials in weight percentage: 30 to 40 percent of copper oxide powder, 8 to 11 percent of metal aluminum powder, 20 to 35 percent of metal copper powder, 5 to 10 percent of fluorite powder, 4 to 10 percent of tin powder and 5 to 10 percent of nickel powder. The hot-melt welding flux has the advantages of proper reaction speed, low heat release, low noise, good corrosion resistance and the like.

Firearm projectiles and methods of manufacturing firearm projectiles from a supply of clad wire. In some embodiments, the clad wire is manufactured as electrical wire, such as copper-clad steel wire. Bullets and shot, as well as methods of forming bullets and shot, from clad wire are disclosed.

The invention relates to a production technology of a copper-clad steel wire in a soft state. The production technology successively comprises the following steps: drawing; tempering under high temperature; carrying out electro-deposition pretreatment; carrying out acid electrolysis; washing; carrying out pretreatment of electro-deposition; washing; carrying out electrodeposition thick treatment; washing; carrying out anti-oxidation processing; drying; drawing; washing; carrying out anti-oxidation processing; tempering under high temperature; polishing; carrying out anti-oxidation processing; and spooling to obtain a finished product. An advantage of the production technology of the copper-clad steel wire in the soft state is that an elongation rate of the produced copper-clad steel wire is greater than or equal to 8%, wherein the elongation rate, which is compared with an elongation rate of a copper-clad steel wire produced by a traditional tempering technology, can be enhanced by at least more than one time..

The invention relates to copper clad steel and a production method thereof. The copper clad steel comprises the following components by weight percent: less than or equal to 0.01% of C, less or equal to 0.009%of Si, 0.05-0.12% of Mn, 0.008-0.015% of Als, less than or equal to 0.015% of P, less than or equal to 0.010% of S and the balance of iron and inevitable impurities. The production method comprises the following steps: smelting, performing continuous casting to obtain a billet; heating the continuous casting billet; performing rough rolling on a high-speed line; performing finish rollingon another high-speed line; silking; performing delay chilling on a Stelmor line; and performing air cooling to the room temperature for standby. The production method solves the problems of the existing SWRM6 wire rod that the work hardening of the wire rod is easy to cause, the electrical conductivity is low and the requirements of the high-end copper clad steel can not be met. The invention provides the copper clad steel product which has good cold workability and high electrical conductivity and completely meets the user requirement.

The invention discloses a wind energy cable, comprising an outer sheath layer and at least one insulation core, wherein the insulation core comprises a conductor and an insulation layer, a longitudinal covered slippage-resistance layer is arranged between the conductor and the insulation layer, the slippage-resistance layer is a Teflon band, the conductor comprises a composite oxygen-free copper wire and a copper-clad steel wire, the composite conductor increases the tensile property and torsion resistance performance of the wind energy cable. The longitudinal covered slippage-resistance layer is arranged between the conductor and the insulation layer, so as to make the most of the self-lubrication, high intensity, high temperature resistance and low temperature resistance features of the Teflon band, ensure that the slippage resistance layer can bear high temperature and high pressure during the extruded insulation process, the conductor and the insulation layer can completely slip during the use, the insulation can not be damaged during slippage, and the requirement of low temperature resistance can be satisfied.

The invention discloses a production method for a copper-clad steel double-metal wire, which includes the steps as follows: straightening a steel core, then removing rust, cleaning and mechanically polishing; heating and melting electrolytic copper, heating the steel core, then horizontally and continuously casting a coating copper layer; heating the copper-clad steel and implementing quick solid solution treatment; continuously pulling the copper-clad steel wire for a plurality of times to lead the diameter of a product to reach 4mm-26mm; annealing the pulled copper-clad steel wire and pulling a die to a specification needed by a finished product. The steel and copper in the product are connected in a melting way by malleable metallurgy and an interface can be completely and firmly combined to become a single compound. The pulling of the double-metal wire is just like pulling of a single metal wire. The invention can coat any products with different materials and different copper layer thicknesses, can meet the requirements of relevant industries on product quality and performances, can produce products with large diameter and long length, and does not pollute the environment. The production method for the copper-clad steel double-metal wire has the advantages of less equipment investment, quick effect and stable performance; moreover, the production method for the copper-clad steel double-metal wire can meet the high requirements on industries like war industry, high-speed railway, communications, electron and electric power, etc.

The invention, relating to a production technology of copper-clad steel, particularly discloses a production technology of preprocessing a copper-clad steel wire matrix, successively comprising the following steps: husking, derusting with a wire brush, pickling, washing, boronizing, drawing, secondary washing, drying and spooling, and ammonia decomposition tempering. The technology has the following advantages: little pollution in the production process, complete treatment of the surface oxidation layer of the steel wire, bright surface of the steel wire, good anti-oxidation effect, and good binding force between the processed steel wire and the copper layer in the subsequent electroplating process.

The invention relates to a preparation method of a copper-clad steel bimetal composite rod, belonging to the technical field of bimetal composite material preparation. The preparation method comprises the following steps of: (1) using a steel rod and a copper tube as raw materials; (2) carrying out the pretreatment of deoiling, derusting and drying on the steel rod and the copper tube; (3) rolling the head of the steel bar by a head rolling machine; (4) inserting the steel bar into the copper tube, carrying out the composite head rolling treatment by the head rolling machine; and (5) carrying out 2-3 passes of composite drawing to obtain the copper-clad steel bimetal composite rod. The method has the characteristics of simple process, high efficiency and low cost. The copper-clad steel bimetal composite rod prepared with the method has stable bonding performance in the copper-steel surface and great surface quality.

The invention discloses a production method of a steel wire rod for a very fine copper-clad steel wire. The production method comprises the following steps of a steelmaking procedure and a controlledrolling procedure, wherein the steelmaking procedure comprises the following steps of 1) molten iron pretreatment; 2) converter steelmaking; 3) argon blowing; 4) RH refining: controlling the mass content of carbon in molten steel to be smaller than or equal to 0.003 percent, the mass content of free oxygen to be smaller than or equal to 15ppm and the mass ratio of manganese and sulfur to be Mn/S larger than or equal to 10; and 5) continuous casting; and the controlled rolling procedure comprises the following steps of 6) heating, wherein a temperature of a heating section is 1050-1150 DEG C, atemperature of a heat balance section is 1150 plus/minus 50 DEG C, and a section temperature difference is smaller than or equal to 30 DEG C; 7) roughing; 8) finishing: a temperature of an inlet of afinishing mill is 900 plus/minus 15 DEG C, and a temperature of an inlet of a reducing sizing mill is 890 plus/minus 10 DEG C; and 9) cooling control: controlling cooling on a Stelmor cooling controlline, wherein a laying temperature of a laying machine is 890 plus/minus 10 DEG C, and the average cooling rate is 0.5-1.5 DEG C/s. The steel wire rod produced by the method has especially good colddrawing performance and higher conductivity and meets the requirements for the steel wire rod for the very fine copper-clad steel wire by electronic products including mobile phones.

The invention provides copper-clad steel/copper grounding grid heat release welding flux with high safety, belonging to the field of metal welding. The prior heat release welding flux used for weldingcopper-clad steel has problems of vigorous and uneven reaction, great splashing, great welding hazard and the like. The heat release welding flux provided in the invention comprises the following components according to the following weight percentage: 45-65% of copper oxide, 8-15% of metal aluminium powder, 22-35% of metal copper cuttings, 2-5% of fluorspar powder, 1-3% of metal tin powder and the balance alloy powder. When welding, the heat release welding flux of the invention has even reaction, no splashing, long reaction cycle and safe welding.

An ignition powder for copper-clad steel/copper grounding grid exothermic welding belongs to the metal welding field. The existing ignition powder for exothermic welding has the problems of poor safety, no environmental protection, complex components, high reaction brightness and the like. The ignition powder for exothermic welding comprises the following components by weight percent: 20-70% of copper oxide powder with granularity of 40-80 meshes and 85% of oxidation degree; 0-50% of copper oxide powder with granularity of 200-300 meshes and 99.9% of oxidation degree; 10-15% of aluminium metalpowder with granularity of 200-300 meshes and 99.9% of purity; and 15-35% of magnesium metal powder with granularity of 40-100 meshes and 99.9% of purity. The ignition powder has the advantages of simple components, environmental protection, good safety, even reaction speed, moderate brightness and the like.

Present invention discloses a silver-copper plated steel-clad wire manufacturing method for electronic products. It contains heat treatment, soda wash, cold rolling copper strip, argon arc seam welding, longitudinal coated on steel wire, stretching, annealing heat treatment, plating silver on copper clad steel wire, annealing heat treatment, and cutting finished product etc steps. Said invented cam draw copper clad steel wire to thin wire with diameter lees than o.10mm without broken layer, ensured high strength of copper steel thermometal composite material, with low resistance and high corrosion resistance.

The invention relates to a cleaning mechanism of a copper clad steel wire. According to the cleaning mechanism of the copper clad steel wire, a wire unwinding device, steel brush double rollers, a wire drawing device and a drying device are arranged in sequence from left to right; a cleaning fluid tank is arranged below the steel brush double rollers; a cleaning fluid enters the steel brush double rollers from the cleaning fluid tank through a pipeline; a sponge roller is arranged above the upper right part of the steel brush double rollers, so that the steel wire between the steel brush double rollers and the sponge roller is inclined upwards; a squeeze roller is arranged on the bottom side of the sponge roller; the squeeze roller is located above the cleaning fluid tank; and a water blowing fan is arranged above the steel wire between the steel brush double rollers and the sponge roller. According to the cleaning mechanism, high-speed scraping is performed by the steel brush rollers and the cleaning fluid, so that impurities such as oil stains and the like can be effectively removed from the surface of the steel wire, and then the cleaning fluid is sucked by the sponge roller and then is squeezed to the cleaning fluid tank by using the squeeze roller so as to be dried; in the whole process, the cleaning efficiency is high, and the cleaning effect is good, so that the copper cladding quality in the next step is guaranteed, and the conductivity of a finished product of the copper clad steel wire is increased.

The invention relates to a surface cleaning system for a copper-clad steel wire. According to the surface cleaning system for the copper-covered steel wire, a pay-off device, steel brush double rollers, a wire tensioning device and a drying device are arranged in sequence from left to right; a cleaning liquid tank is arranged below the steel brush double rollers; a spraying cleaning device, a tension control roller and a sponge roller are arranged between the steel brush double rollers and the wire tensioning device, and the sponge roller is located on the upper right of the tension control roller; a water squeezing roller is arranged at the bottom side of the sponge roller and located above the cleaning liquid tank; a water blowing fan is arranged above the position, between the tension control roller and the sponge roller, of the steel wire. Oil stains and other impurities on the surface of the steel wire can be effectively removed through high-speed scraping of the steel brush rollers and cleaning liquid and high-pressure spraying of the spraying cleaning device, the cleaning liquid is sucked away through the sponge roller and then squeezed back into the cleaning liquid tank through the water squeezing roller, and then drying is carried out; the cleaning efficiency is high, and the cleaning effect is good. Thus, the quality of a next step of copper cladding is guaranteed, and the conductivity of a copper-clad steel wire finished product is improved.

The invention discloses a method and a device for the continuous up-casting of copper-clad steel. The method comprises the key points that: a preheated steel core wire enters from the bottom of a continuous casting furnace, and then is vertically dragged out of the upper part of the continuous casting furnace after continuous casting and cladding in melted copper in the furnace in sequence. The preheating temperature of the steel core wire is between 600 and 700 DEG C; the temperature of the melted copper is controlled to between 1,150 and 1,110 DEG C; the cladding distance of the steel core wire in copper liquid is controlled to between 8 and 17cm; and the speed at which the copper-clad steel core wire after the continuous casting is extracted from the furnace is between 100 and 120m/min. Meanwhile, the device makes the continuous casting furnace keep constant temperature and ensures the quality of products because a melting furnace, a heat preserving furnace and the continuous casting furnace are connected with one another; and moreover, because the device is provided with a furnace body lifting device, the device can conveniently transfer the melted copper in the continuous casting furnace so as to facilitate maintenance.

The invention discloses a nickel/silver-coated copper-clad steel conductor core for special cable. A wire conductor thereof is composed of a plurality of single wires with each sequentially comprising four metal layers, wherein the inner layer is a base material (1), the second layer is a copper layer (2), the outmost layer is a silver layer (4), and a nickel layer (3) is arranged between the copper layer (2) and the silver layer (4). The invention further discloses a manufacturing method of the nickel/silver-coated copper-clad steel conductor core for special cable, which comprises the steps of: using carbon-structured steel as the base material (1) for performing copper coating by means of electrolysis; implementing drawing for formation on the copper layer (2)-forming material many times and then implementing first heat treatment; bringing the material which is subjected to the first heat treatment to nickel coating by means of electrolysis in order to form the silver layer (4); implementing drawing for formation on the silver-coated material via a mold and then implementing second heat treatment, and finally, drawing and polishing the material via the mold to form single wires.

The invention provides heat-releasing welding flux for an iron-base copper-clad steel grounding grid. The heat-releasing welding flux comprises, by weight, 0-15 parts of Fe2O3, 21-55 parts of Fe3O4, 15-22 parts of metal aluminum powder, 5-10 parts of metal chromium powder, 4.5-7 parts of CaF2 powder, 2-3 parts of metal tin powder, 0.1-2.5 parts of metal nickel powder, 0-15 parts of metal iron powder, 1.1-2.5 parts of calcium silicon powder and 0.5-3.5 parts of iron alloy powder. According to the heat-releasing welding flux, the iron oxide and the aluminum powder serve as basic materials, and cost is greatly reduced; the fluidity of molten metal can be improved through the CaF2 powder, and gas is easily discharged. The metal chromium powder is added, a stable and compact oxide film can be generated by the chromium, and the corrosion resistance of metal can be remarkably improved by the fact that the chromium is added into the metal such as the iron.

The invention discloses an ultra-low carbon steel fine wire drawing method, which comprises a first stage of drawing process, a recrystallization annealing process, and a second stage of drawing process. According to the first stage of drawing process, the total deformation is calculated to be 75 percent to 85 percent according to a wire rod axial circle area. The method is applicable to the processing field of products such as copper-clad steel wires and electronic leading wires. The cold plastic deformation is hardly carried out during a second-time rapid processing and hardening process, so that the occurrence of the phenomenon that the tensile strength of middle wires is too high can be effectively avoided, the wire breaking rate can be remarkably reduced, the middle wires are prevented from being processed and hardened excessively, and the die loss is reduced; the finished products i.e. fine wires obtained according to the method provided by the invention can meet the requirement of low tensile strength. The ultra-low carbon steel fine wire drawing method provided by the invention has no special requirement on drawing equipment, is applicable to a common connecting tank drawing machine, and has no need to increase equipment and reformation investment; the diameter of each winding drum can be equal or unequal; and the ultra-low carbon steel fine wire drawing method provided by the invention is applicable to ultra-low carbon steel with the carbon content being not more than 0.05 weight percent, and the raw material steel types are wider.

The invention relates to a structural transformation control method in a continuous cooling process of an ultra-low-carbon wire rod of a square billet, belonging to the technical field of steel rolling. Aiming at the structural transformation in the continuous cooling process after thermal simulation transformation is carried out on a hot-rolling steel wire rod for a copper-clad steel wire, a continuous cooling structural transformation curve of the hot-rolling steel wire rod for the copper-clad steel wire is analyzed through structural transformation characteristics in the continuous coolingprocess under different cooling rates after the hot transformation. The invention solves the problems of cooling process and structural control after the hot-rolling steel wire rod for the copper-cladsteel wire rod is rolled, and provides data support on crystallite dimension control and tertiary cementite precipitation number for rolling and producing the ultra-low-carbon wire rod of the squarebillet.

The invention relates to a production technology of a soft-state copper-clad steel wire. The production technology of the soft-state copper-clad steel wire successively comprises the following steps: drawing; high temperature tempering; electrodeposition pretreatment; acid electrolyzation; washing; pretreatment electrodeposition; washing; thick processing electrodeposition; washing; anti- oxidization; drying; drawing; washing; anti- oxidation treatment and ammonia-decomposition high temperature tempering. By using the production technology of the soft-state copper-clad steel wire of the invention, an elongation rate of the copper-clad steel wire is greater than or equal to 10%, which is more than one time of the elongation rate of the copper-clad steel wire produced by a traditional tempering technology.

The invention discloses a production process of active copper oxide. The process comprises the steps that: (1) copper-clad steel scrap is added into a copper-melting tank; (2) needed ammonium bicarbonate is added into the copper-melting tank, and air is blown into the copper-melting tank from the bottom; (3) material liquid in the copper-melting tank is pumped into an iron-removing tank; hydrogen peroxide is added into the tank according to that a ratio of hydrogen peroxide to iron is 2-3:1; and a reaction is carried out for 2h under a temperature controlled at 30-40 DEG C; (4) obtained reaction liquid is added into a frame filter press; (5) a stirrer of a reaction vessel is started, a steam valve is opened, and a steam pressure is controlled at 0.1-0.3MPa; (6) a reaction vessel bottom valve is opened; a centrifuge provided with a filtering cloth is added under a stirring condition; and a filtrate formed in the centrifuge and washing solution are delivered into the copper-melting tank; (7) a filter cake formed in the centrifuge is delivered into a dryer, and a temperature in the dryer is controlled at 85-115 DEG C; and (8) obtained dry material is added into an externally heated rotary kiln. The production process provided by the invention does not cause sewage discharging.