105results about How to "Shorten plating time" patented technology

The invention discloses a printed circuit board and an electrocoppering process of the printed circuit board. The printed circuit board comprises a micro blind hole or a micro through hole. The electrocoppering process comprises a pre-treatment step, an electrocoppering step and a post-treatment step. The electrocoppering process is characterized in that a preimpregnation step is further arranged between the pre-treatment step and the electrocoppering step, wherein a first preimpregnation slot and/or a second preimpregnation slot are contained in the preimpregnation step. According to the process disclosed by the invention, high-uniform coatings can be obtained on plating articles with different plate thicknesses/aperture ratios, so that the copper layer uniformity of the through hole of the printed circuit board can be improved, the copper layer thickness of the surface can be effectively reduced, and the TP value can be improved; when the process is applied to filling of the blind hole, the blind hole further can be quickly filled and flattened, so that the electroplating time is shortened and the electroplating copper is saved. The method does not modify existing electrocoppering production line, neither has special requirements on an electroplating additive formula and has very good operability.

The invention discloses a rotary type automatic discharge electroplating rolling barrel which comprises a barrel body, a barrel cover and a rotating shaft, wherein the barrel body comprises two baffle plates with C-shaped sections and openings; each baffle plate comprises a bottom wall, an inner side wall and an outer side wall; the bottom wall is opposite to the opening of the baffle plate; the inner side wall and the outer side wall are respectively connected to both sides of the bottom wall; the two baffle plates are mutually jogged in such a way that the openings are just opposite, the two baffle plates are mutually staggered in a direction perpendicular to a direction which is just opposite to the openings of the two baffle plates; electroplating cavities are formed between the bottom walls and inner side walls of the two baffle plates; a discharge chute is formed between the inner side wall of one baffle plate and the outer side wall of the other baffle plate, and the discharge chute is communicated with the electroplating cavity. According to the invention, the barrel body is designed into a structure that the two baffle plates with C-shaped sections are mutually jogged, so that the electroplating and the automatic discharge function can be realized, and the electroplating production continuity can be ensured. The rotary type automatic discharge electroplating rolling barrel disclosed by the invention is simple in structure and convenient to clean and farthest reduces the cross contamination of chemical raw materials among procedures.

The invention discloses an electroplating solution which mainly comprises an aqueous solution consists of the following substances: zinc, sodium hydroxide, sodium carbonate, a regulating agent, a plating bath solution, a secondary brightener and a bright-throwing power additive. According to the invention, some additives are added into the electroplating solution to adjust the proper zinc ion concentration and the current density, so that the electroplating solution has perfect throwing power; therefore, the electroplating solution has rather good current efficiency, throwing power and covering power. Thus a coating made of the electroplating solution has a better physical property and is more shiny, more full, more uniform and more exquisite with strong binding capability. The invention also discloses a preparation method of the electroplating solution and a galvanization technique using the electroplating solution.

The invention relates to a new method for manufacturing interconnected copper pillars among a plurality of layers of circuit boards, comprising the following steps: 1, coating or laminating a permanent photosensitive layer on the inner-layer circuit boards, and exposing the parts needing to be electroplated with the copper pillars after light sensitivity and developing; 2, through chemically plating copper, leading copper layers to reach the height needed by the copper pillars; 3, coating or laminating a temporary light-sensitive layer, and remaining the light-sensitive layer for protecting the light-sensitive layer of the copper pillars after light sensing and developing; 4, obtaining the copper pillars for interconnection needing among the layers by etching; 5, removing the temporary light-sensitive layer; 6, obtaining new copper layers by chemically plating copper plating and electroplating copper for thickening after surface treatment; and 7, manufacturing an outer-layer circuit on the new copper layers. Compared with the prior art, in the new method, large-area and large-current copper plating is adopted so as to omit electroplating a nickel layer, save the electroplating time and improve the efficiency; and the connection among the copper pillars and copper layers is firm, so that the performance of the plurality of layers of the circuit boards is more stable and reliable and the circuit boards have practicability.

A plating method capable of controlling a concentration of an additive within a proper range during plating of a substrate is disclosed. The plating method includes: disposing an anode and a substrate, having a via-hole formed in a surface thereof, so as to face each other in a plating solution containing an additive; applying a voltage between the anode and the substrate for filling the via-hole with metal; measuring the voltage applied to the substrate; calculating an amount of change in the voltage per predetermined time; and adjusting a concentration of the additive in the plating solution to keep the amount of change in the voltage within a predetermined control range.

There is provided a multilayered ceramic electronic component including: a ceramic body in which a plurality of dielectric layers are multilayered; a plurality of first and second internal electrode layers formed on at least one surfaces of the dielectric layers and alternately exposed through both ends of the ceramic body in a length direction thereof; first and second adhesive layers formed on both ends of the ceramic body, electrically connected the exposed first and second internal electrodes and formed of a conductive paste; and first and second external electrode layers formed on surfaces of the first and second adhesive layers and formed of a glass-free conductive paste.

The invention provides a continuous metal electroplating method for carbon fiber tows. According to the method, after cleaning treatment by a surfactant solution, a carbon fiber is used as a cathode and plated metal is used as an anode for electroplating, and then cleaning, drying and tow winding are carried out. The continuous metal electroplating method provided by the invention has the advantages of high safety, good deoxidation effect, less investment, high convenience in operation and low operating cost.

The invention discloses a membrane sticking electroplating process for a lead frame and a special device thereof, which overcome the defects of low efficiency and indistinct outlines of electroplating areas in the conventional electroplating process for the lead frames. The membrane sticking electroplating process comprises the following steps of: performing preheating, membrane sticking, electroplating and dyestripping on a traveled lead frame substrate belt. The membrane sticking process comprises the following steps of: cutting a mucous membrane belt to form a plurality of protective membranes, sorting the protective membranes and laminating the protective membranes which are needed to be adhered to the lead frame substrate belt by using a pair of compression rollers. The membrane sticking electroplating special device for the lead frame comprises a preheating device, a membrane sticking device, an electroplating device and a dyestripping which are connected sequentially, wherein the membrane sticking device comprises a pair of the same membrane sticking machines which are arranged on both sides of the lead frame substrate belt; and a machine frame of each membrane sticking machine is provided with a wheel disc, a plurality of traction rollers, a cutting die, a guide die, a carrier roller and a pair of compression rollers. By the membrane sticking electroplating process, a production process which is performed by electroplating and pressing and is used for the lead frame and a special device thereof are provided for the society, so the continuity of production is improved greatly, and the outlines of electroplating areas are distinct and accurate.

The invention discloses a through hole electroplating process for a printed circuit board. The through hole electroplating process comprises the steps of deoiling: stains and oxide layers on a coppersurface of the printed circuit board before electroplating are removed by using an acidic degreasing agent, wherein the deoiling is operated under the temperature of 43-54 DEG C for 3-5 minutes; rinsing: the printed circuit board subjected to the treatment of the degreasing agent is rinsed by adopting flowing deionized water to match with mechanical swinging, wherein the rinsing is operated underthe temperature of 20-28 DEG C for 2-4 minutes; pre-soaking: pre-cleaning is carried out on the printed circuit board before electroplating by using a dilute sulfuric acid solution in cooperation withmechanical swinging and a filtering circulating system, wherein the concentration of the dilute sulfuric acid solution is 10%, and the pre-soaking is operated under the temperature of 20-28 DEG C for1-3 minutes; and electroplating: the printed circuit board is electroplated by utilizing electroplating chemicals, the filtering circulating system, mechanical swinging and jet flow, wherein the electroplating is operated under the temperature of 23-26 DEG C, and the electroplating chemicals comprise an electroplating base solution and an electroplating additive. The through hole electroplating process for the printed circuit board is characterized in that the electroplating time can be shortened to the maximum extent, and the production efficiency can be improved.

The invention discloses an inner hole electroplating device. The inner hole electroplating device comprises an anode rod and a protective sleeve, wherein the protective sleeve is arranged on the anoderod in a sleeving manner; a workpiece is arranged on the anode rod and the protective sleeve in a sleeving manner; the protective sleeve is arranged corresponding to the non-electroplated sections ofan inner hole in the workpiece; a gap is formed between the electroplated sections of the inner hole in the workpiece and the anode rod; a metal lining is arranged at the other end of the outer surface of the protective sleeve; a first gasket and a second gasket which are arranged with metal nuts in an overlapping manner are arranged at one end of the anode rod; the first gasket is made of a metal material; the second gasket is made of an insulating material; and the first gasket and the metal lining exert the cathode protective function in the electroplating process. By adoption of the innerhole electroplating device disclosed by the invention, a plurality of discontinuous sections of the inner hole can be electroplated at a time, thereby shortening the electroplating time; the thickness of an electroplated layer is uniform and consistent, thereby lowering the consumption of an electroplating material; and the edge quality of the electroplated layer is improved.

The invention relates to a surface processing method for a radio frequency passive module, which is to electroplate a ternary alloy layer of copper, tin and zinc on the surface of the module and comprises the steps of pretreatment, preprocessing, pre copper plating, electroplating ternary alloy of copper, tin and zinc and post treatment. The invention adopts the surface processing method of electroplating the ternary alloy of copper, tin and zinc on the surface of the radio frequency passive module, which replaces the traditional silver plating technique. The radio frequency passive module after surface treatment fully satisfies electrical performance of the radio frequency passive module and at the same time reduces cost. Furthermore, the temperature resistance performance and the anti-corrosion performance are greatly improved, thus the service life of the related communication product is prolonged. Compared with the traditional silver plating technique, the steps of electroplating ternary alloy of copper, tin and zinc and post treatment simplify the processing steps, relatively save the electroplating time and also improve the working efficiency.

The invention belongs to the technical field of electroplating, and particularly relates to an electrocoppering plating solution and an electrocoppering method. The electrocoppering plating solution is composed of copper sulfate pentahydrate, sulfuric acid, chloridions, a brightener, a leveling agent, lauryl L-Arginine ethyl ester dihydrochloride, deionized water and other components. The electrocoppering method comprises the four steps of surface treatment, electrocoppering plating solution preparing, electroplating and drying. By means of the electrocoppering plating solution, electrocoppering can be carried out under the high-density current, a coppered layer of an obtained coppered workpiece is bright and smooth, adhesive force is good, the electroplating time of the low current density under the same condition can be shortened, work efficiency can be improved, and cost can be saved. The formula components of the electrocoppering plating solution are simple, the electrocoppering method is easy to achieve, and industrialization can be achieved easily.

The invention discloses a composite electroplating bath containing nano-sized vanadium carbide. The composite electroplating bath containing nano-sized vanadium carbide is prepared from, by weight, 500-550 parts of nickel aminosulfonate, 21-25 parts of cobaltous sulfate, 33-38 parts of nickel chloride, 30-35 parts of boric acid, 0.7-0.8 part of lauryl sodium sulfate, 0.4-0.6 part of sodium 1-undecanesulfonate, 4-6 parts of styrene, 0.2-0.3 part of azodiisobutyronitrile, 7-9 parts of the nano-sized vanadium carbide, 0.4-0.5 part of saccharin, 5-6 parts of basalt fibers, 4-5 parts of stearic acid, 2-3 parts of ethylene glycol, 5-6 parts of starch, and a proper amount of deionized water. The composite electroplating bath is environmentally friendly, nontoxic, simple in process and low in cost.

The invention relates to a method for using Ni-Co-W alloy electroplate liquid to repair a nickel-plated combined crystallizer narrow plate in an electroplating manner and belongs to the technical field of electroplating. The method includes the steps of firstly, preparing electrolyte; secondly, rough machining the narrow plate; thirdly, cleaning the narrow plate; fourthly, electrolyzing the narrow plate; fifthly, electroplating the crystallizer narrow plate. The method has the advantages that the method in novel in concept and well-organized in sequence; nickel alloy is plated on the nickel layer of the lateral edge of the crystallizer narrow plate, electroplating time of the narrow plate can be reduced from five days to three days, lateral edge machining amount is reduced, consumption of cobalt, nickel and power is reduced, work efficiency is increased, and production cost is lowered; wear resistance of the plated layer is increased by using the Ni-Co-W alloy electroplate liquid, and the service life of a crystallizer is prolonged.

A plate material conveyance apparatus, disposed next to a plate processing machine, includes an unprocessed plate material placement unit, a processed plate material placement unit, a loader, an unloader and a temporary placement table. The loader reciprocally moves between the unprocessed plate material placement unit and the plate processing machine to deliver an unprocessed plate material onto the plate processing machine. The unloader reciprocally moves in parallel to and below the loader between the unprocessed plate material placement unit and the plate processing machine, and delivers a processed plate material from the plate processing machine to the temporary placement table positioned above the unprocessed plate material placement unit. The temporary placement table slides between the unprocessed plate material placement unit and the plate processing machine, and transfers the processed plate material, received from the unloader, to the processed plate material placement unit.

The invention relates to a nickel-plated steel strip, a steel battery case manufactured from the steel strip, and a method of manufacturing the steel battery case. In the invention, firstly, a pre-nickel-plating layer is formed on the inner surface of the steel strip; then through thermal treatment, a surface layer and a bottom Fe-Ni alloy layer are formed from the inter-permeated pre-nickel-plating layer and a contact surface, a part of the nickel-plating layer being reserved between the surface layer and the bottom Fe-Ni alloy layer, so that a problem that on the steel strip, during a steelcase stamping process, cracks are liable to generate in the plating layer is avoided; the surface layer and the bottom Fe-Ni alloy layer formed through the thermal treatment have compact structure, sothat not only is excellent anticorrosive performance achieved, but also the combining force between the Fe-Ni alloy layer and the Fe substrate is far higher than that between the plating layer and the Fe substrate in the prior art, so that by improving the combining force between the plating layer and the Fe substrate, the problem of forming cracks in the plating layer during the steel case stamping process is greatly solved, thus solving liquid leakage during long time storage of the battery. In addition, a part of the nickel-plating layer is reserved, thus preventing iron from dissolving out from the Fe-Ni alloy layer.