72results about How to "Guarantee the quality of plating" patented technology

The electroplating machine capable of automatically accessing jig includes electroplating bath, jig, jig conveying system and control circuit. The jig conveying system set over the electroplating bath may be divided into upper plate section, front processing section, electroplating bath section, post processing section and temporarily set section. The temporarily set section has automatically jig accessing unit consists of jig storing mechanism and automatic elevating mechanism. The control circuit is connected to the jig accessing mechanism and the automatic elevating mechanism. The automatic elevating mechanism is connected to the jig accessing mechanism and the temporarily set section to realize the automatic accessing of jig. Compared with available technology, the present invention has raised electroplating effect, less man-made error and low cost.

An application of chemically plating nickel, especially a method of repairing different sizes of bearing by chemically plating nickel. The method comprises : washing bearings with gasoline; washing bearings with methanol; washing bearings with warm water, the temperature of the warm water is 60 -70degree Cú¼washing for 2 min; washing bearings with chemicals, the temperature thereof is 60-70degreeCú”washing with cool water; immersing in an acid and activating for 1-2min, the concentration of the acid is 10í†5ú”washing with cool water; preheating bearings with hot water for 5-10min, the temperature thereof is 80-90 degree C;preparing the chemical plating nickel solution.

The invention relates to a manufacturing method of a lead-acid storage battery negative grid, and the manufacturing method comprises the following steps of a, stretching a copper plate to be reticulate so as to form copper stretch metal, and tailoring the copper stretch metal into a rectangular structure; b, pouring lead alloy on one end of the copper stretch metal to form a lug; c, electroplating lead on the surface of the copper stretch metal with the lug, and forming a lead-plated layer on the surface of the copper stretch metal; and d, carrying out the injection molding on the other end of the width direction and two ends of the length direction of the copper stretch metal to form a plastic frame. By adopting the manufacturing method, after the copper stretch metal is stretched, the operation for curling the frame is not needed; after a copper frame is removed and the molded frame is adopted for the copper stretch metal, no conditioning fluid remains in the lead electroplating process, so that the electroplating quality is guaranteed, and the rejection rate is reduced; and due to the adoption of the plastic frame, the strength of the grid can be guaranteed, the short-circuit potential danger of the negative electrode and the positive electrode can be eliminated, and components such as a frame protection sleeve are not needed.

The invention relates to a two-end tin-plating automatic production line. The two-end tin-plating automatic production line includes a loading device, a first cleaning device, a tin-plating tank, a second cleaning device and an unloading device which are successively connected; the tin-plating tank, the first cleaning device and the second cleaning device are all connected with a PLC and an exhausting system; the first cleaning device comprises an electrolysis oil-removing tank, a water washing tank, a pickling tank, a passivation tank and an activation tank; the second cleaning device comprises an ultrasonic cleaning and tank, a neutralization tank, a water washing tank and a dry-scalding tank; the electrolysis oil-removing tank, the pickling tank, the passivation tank, the activation tank, the tin-plating tank and the neutralization tank are each provided with a Feiba; the Feiba comprises a Feiba base, a tin-plating liquid box group, a Feiba frame, and a cover sheet covering the tin-plating liquid box group. Compared with the prior art, the two-end tin-plating automatic production line has controllable programming operation; wastewater is greatly reduced, and thus the wastewater treatment cost is reduced; the work environment is improved, and odor generated by chemical agents required for electroplating is directly discharged through an air treatment device via the exhausting system.

The invention discloses an electroplating conductive stick swinging and water-pouring device. The electroplating conductive stick swinging and water-pouring device comprises an electroplating special traveling crane, an electroplating conductive stick and an electroplating groove; the electroplating special traveling crane comprises a traveling crane rack, a traveling device, a hoisting device and a swinging device; the swinging device comprises a swinging frame; the swinging frame is provided with a driving device; two striking rods are arranged on the swinging frame at intervals; the electroplating conductive stick comprises two booms, two hoisting plates and a swinging rack; the two hoisting plates are fixedly connected with the two booms; the swinging rack is arranged between the two hoisting plates through a swinging bearing; a conductive rod is fixed on the top of the swinging rack; and after the electroplating conductive stick is hoisted by the hoisting device, the conductive rod is positioned between the two striking rods. By the electroplating conductive stick swinging and water-pouring device, workpieces can swing in the left-right direction; after the electroplating conductive stick swinging and water-pouring device is inclined at a certain angle, liquid taken out by the workpieces can pour to the groove within a short time, the electroplating efficiency is improved, electroplating quality is guaranteed, and waste of medicament solution is reduced.

The invention relates to a copper plating production line for producing printing rollers. The copper plating production line for producing the printing rollers includes a support frame; a circular double speed chain is arranged on the support frame; a horizontal moving frame is connected to the circular double speed chain; a vertical moving frame is slidingly connected to the horizontal moving frame; the vertical moving frame includes a connecting plate, a pneumatic finger connected to the lower end of the connecting plate, and a roller body limit ring fixedly connected to the output end of the pneumatic finger; a pretreatment working section, an electroplating section and a cleaning section are arranged under the support frame in order along the moving direction of the roller body; and aloading device and an unloading device are arranged between the pretreatment working section and the cleaning section. According to the invention, when performing an electroplating operation on the roller body, the circular double speed chain can drive the horizontal moving frame and the vertical moving frame to move, and the roller body can be driven to move automatically during the movement process of the horizontal moving frame and the vertical moving frame, which cannot cause collision between the roller body and the machine body; and therefore, the relatively stable movement of the rollerbody can be ensured, and the quality of the roller body electroplating can be ensured.

The invention relates to a clamp system special for electroplating of fixing bolts. The clamp system comprises pressing plate assemblies, a base plate assembly, handles, a steel wire rope and a pull ring. The pressing plate assemblies are arranged at the upper end of the base plate assembly in parallel. The handles are arranged at the two ends of the pressing plate assemblies. The handles are connected through the steel wire rope. The pull ring is arranged in the middle of the steel wire rope. The base plate assembly comprises a base plate, circular truncated cone protrusions, containing holes and through holes. Each pressing plate assembly comprises a pressing plate, through holes, fixing blocks, first compression springs and pressing blocks. By adoption of the clamp system special for electroplating of the fixing bolts, multiple fixing bolts can be placed in clamps to be electroplated at a time, black spots of the fixing bolts are avoided, and the overall production efficiency is improved and the economic benefits are increased while the electroplating quality for the fixing bolts is guaranteed.

The invention provides an electroplating current optimization method applicable to a continuous electrotinning unit. The method comprises the following steps: (1) making a steel coil production plan according to plating thickness and carrying out continuous production of steel coils; (2) starting all the electroplating passes of the unit when producing a tin plate with plating thickness of no less than 5.6 g/m<2>, and starting half of the electroplating passes of the unit when producing a tin plate with plating thickness of no more than 2.8 g/m<2>; (3) when changes of plating specifications cause reduction of total current, maintaining the number of started electroplating passes to be unchanged while changing current distribution of each pass to reduce total current for front and rear steel coils with plating thickness in a same divided interval, and halving the number of plating baths while changing current distribution of each pass to reduce total current for front and rear steel coils with plating thickness in different divided intervals; and (4) when speed reduction of the unit causes reduction of total current, maintaining the number of started electroplating passes to be unchanged while changing current distribution of each pass to reduce total current. The method provided by the invention takes high current density distribution principles into consideration, employs a small number of plating baths for thin strip steel and enables distribution current density to be high, thereby guaranteeing electroplating quality.

The invention discloses a method for electroplating a lead frame, which comprises the following steps: (1) preparing a wet-film solution (5); (2) electroplating a film layer on the lead frame; (3), cleaning and drying the lead frame; (4) exposing the lead frame; (5) developing the lead frame; (6) electroplating a metal layer on the lead frame; (7) performing film removal treatment; and (8) cleaning and air-drying the lead frame. Compared with the prior art, the method has the advantages that: because a mask treatment is performed on the lead frame by using an electroplated film before the metal layer is plated on the lead frame, the side edge of the lead frame is also electroplated with a mask, a metal plating layer cannot be plated on the side edge of the lead frame when the metal layer is electroplated on the lead frame, and the electroplating quality of the lead frame is ensured; and simultaneously the price of the film is lower than that of a dry film. Thus, the method has a low electroplating cost, is favorable for batch production and has a high yield of finished products.

The invention discloses a multifunctional ship accessory surface electroplating processing device. The device structurally comprises a pump, a rack, a cleaning tank, a shaft frame, a rolling wheel, aconveying belt, an electroplating tank, a stirring device, a waste water treatment device and a water outlet valve; the pump are connected to the cleaning tank, the cleaning tank is movably connectedto the conveying belt, the conveying belt is movably connected to the rolling wheel, the rolling wheel is movably connected to the shaft frame, the shaft frame is connected to the rack, and the rack is provided with the cleaning tank; and the electroplating tank is provided with the stirring device, the bottom of the cleaning tank is connected to the waste water treatment device, the waste water treatment device is provided with the water outlet valve, the cleaning tank is composed of a tank body, a water pipe and a nozzle, the tank body is connected to the water pipe, and the water pipe is connected to the nozzle. According to the multifunctional ship accessory surface electroplating processing device, the cleaning tank is arranged, a workpiece before electroplating can be cleaned, the surface of the workpiece is ensured to be clean, and the electroplating quality is guaranteed.

The invention discloses a hollow part electroplating device which belongs to the technical field of electroplating. The device comprises an electroplating slot, an anode assembly and a cathode assembly, wherein a plurality of anode rods which are arranged side by side are arranged above the electroplating slot; a cathode anode is arranged between adjacent two anode rods above the electroplating slot; the cathode assembly is used for placing a hollow part; the anode assembly is detachably connected to the cathode assembly and is positioned at the inner side of the cathode assembly; the anode assembly and the cathode assembly are kept insulated; the cathode assembly is electrically connected to the cathode rods; and the anode assembly is electrically connected to the anode rods. In an electroplating process, the anode rods are mounted inside the hollow part, and anode plates are mounted outside the hollow part, so that inner and outer surfaces of the hollow part are good in electroplating effect and are high in electroplating efficiency. The hollow part is supported by a hanger, so that the hollow part can be effectively limited, placed and taken, and thus, electroplating efficiencyis favorably improved.

The invention relates to a two-purpose aluminum pipe hanging tool which comprises a transverse rod and hanging frames arranged at the two ends of the transverse rod. Each hanging frame is made from an aluminum profile bent in a U shape. The cross section of each aluminum profile is in a U shape. An isosceles trapezoidal first protrusion and an isosceles trapezoidal second protrusion are arranged at the two top ends of each U shape respectively. The junction between each first protrusion and the corresponding U shape and the junction between each second protrusion and the corresponding U shape are in smooth transition. Flow guide grooves formed in the aluminum profile extending direction are formed in the upper surfaces of the first protrusions and the second protrusions. A rectangular third protrusion is arranged in the center of the lower end of each U shape. The junction between each third protrusion and the bottom of the corresponding U shape is in smooth transition. Corrugated serrated structures are arranged on the lower surfaces of the third protrusions. The two-purpose aluminum pipe hanging tool has the beneficial effects that by the adoption of the hanging tool, galvanization and electroplating can be achieved smoothly, a corresponding manner can be selected according to actual production, and the use number of hanging tools is reduced.

The invention discloses electroplating equipment for two-side feeding and discharging of electroplated parts. A pair of left-right moving seats are arranged on the left side and the right side of a central lifting plate in a left-right moving mode correspondingly. A central rotating column is rotationally arranged on the central lifting plate. The central rotating column vertically penetrates through a left-right moving groove and is provided with a central gear. The central gear is located between a pair of left and right driving racks and engaged with the pair of left and right driving racks. A clutch device is arranged in the left-right moving groove. The clutch device is used for separating and combining the central rotating column and the central gear. A central driving gear is arranged at the bottom of the central rotating column. The lower end surface of the central lifting plate is pivoted with a pair of transmission central shafts which are symmetrically arranged left and right. A central transmission gear is fixed at the bottom of the transmission central shaft. A side central column is pivoted to the bottom surface of the left-right moving seat. A rotary gear is fixed to the lower portion of the side central column.

The invention relates to an efficient gravure chromeplating additive, which effectively solves the problems that the current efficiency is low, the electric energy consumption is high and a plated piece is corroded. The efficient gravure chromeplating additive is prepared from 12-18kg of 1,5-naphthalene sulfonic acid sodium salt, 8-12kg of potassium iodide, 9-15kg of methylene sodium binaphthalene sulfonate, 0.4-0.6kg of sulfuric acid, 0.25-0.35kg of alcohol, 0.4-0.6kg of chromic anhydride and 25-39kg of purified water. The efficient gravure chromeplating additive is prepared by the steps of: adding 1,5-naphthalene sulfonic acid sodium salt into the purified water; agitating till 1,5-naphthalene sulfonic acid sodium salt is dissolved; adding potassium iodide; agitating till potassium iodide is dissolved; adding and agitating sodium methylene binaphthalene sulfonate; adding and agitating alcohol till the alcohol is dissolved; and adding and agitating chromic anhydride till the chromic anhydride is dissolved. The efficient gravure chromeplating additive provided by the invention has a very good effect, and the chromeplating solution with the additive is high in current efficiency, great in deposition velocity, free from fluorides and does not corrode the plated piece and the lead plate of the anode, so that the electroplating quality is ensured.

The invention discloses semiconductor lead electroplating equipment. An upper bottom plate is arranged on the lower side of a lower bottom plate, the lower bottom plate and the upper bottom plate arefixedly connected through four first supporting rods 1, an electroplating tank for containing an electroplating liquid is arranged on the upper side of the upper bottom plate, vibrators enabling the electroplating liquid to vibrate are symmetrically and fixedly arranged on the left inner wall and the right inner wall of the electroplating tank, discharging nails for discharging the electroplatingliquid are fixedly arranged on the inner wall of the lower side of the electroplating tank, and a lifting device for lifting the electroplating tank upwards is arranged between the electroplating tankand the lower bottom plate. The semiconductor lead electroplating equipment is easy and convenient to operate and low in manufacturing cost, the box for containing the workpieces can move up and downin a mixing mode, the electroplating liquid makes full contact with the workpieces during electroplating, and the electroplating quality is guaranteed.

The invention discloses a method for preventing an electrochromism product from skip plating and hard spots. The method comprises the steps of oil removing, coarsening, recovering, reducing at two times, activating with palladium, peptizing, plating of chemical nickel, copper pre-plating, copper plating, activating with acid, semi-bright nickel plating, bright nickel plating, nickel sealing, chromium plating, reducing, ultraviolet sterilizing, wind shearing, and drying, wherein washing is performed between every adjacent two processes; when activating with palladium, palladium activating liquid with high tin concentration or palladium activating liquid with low tin concentration is added to a palladium activating bath to control the concentration of tin ions to be 1.2 to 1.8g/L. The invention also provides a method for controlling the concentration of tin ions in the electroplating process. The method is characterized in that two kinds of palladium activating liquid are utilized for effectively adjusting to control the tin ion concentration to be within the optimal range of 1.2 to 1.8g/L, additionally, the content of palladium can also be supplemented, and thus the activating with palladium is effectively promoted, and as a result, the electroplating quality of the product is ensured, and the product is also prevented from skip plating and hard spots.

The invention relates to the technical field of plating hangers, in particular to a slender bar plating hanger which comprises a hanger body. The hanger body comprises a hook, a plurality of pipe type clamp assemblies and chains. The pipe type clamp assemblies are fixedly connected to the lower end of the hook and fixedly connected through the chains and comprise outer pipes, fixing holes and fixing screws. The fixing holes are symmetrically formed in the outer pipes in the radial directions and movably provided with the fixing screws. The slender bar plating hanger is simple in structure, a slender bar is quite well fixed through the pipe type clamp assemblies, manpower and material resources are saved, damage to the slender bar is avoided, the plating quality of the slender bar is ensured, and the machining efficiency of the slender bar is improved.