53results about How to "Improve galvanizing quality" patented technology

The invention relates to a strip steel cold rolling emulsified oil and a preparation method thereof.The strip steel cold rolling emulsified oil is prepared from 10%-40% of a component A, 15%-45% of a component B, 5%-20% of a component C, 3%-10% of a component D, 2%-8% of a component E, 2%-8% of a component F, 1.8%-7% of a component G and 1.5%-6% of other auxiliaries H.The cold rolling emulsified oil is appropriate in viscosity, good in volatility and moderate in saponification value; the emulsion particle size is moderate after the cold rolling emulsified oil is dissolved in water, so that rolled strip steel is good in surface finish and free of residues, which plays a key role in improving the galvanization quality of strip steel in a subsequent process; the rolling liquid is long in service life, low in cost and capable of prolonging the service life of rollers and reducing product cost; besides, the preparation method is simple and easy to apply and popularize on a large scale, so that good economic benefits and social benefits are brought.

The invention relates to an on-line circulation process for hot galvanizing process quickening liquid, which is carried out according to the following steps: (1) after a solvent is introduced into a neutralization reaction tank, an ammonium hydroxide solution is added, the pH value of the solvent is regulated to 5.0-5.5, and then, hydrogen peroxide is added to convert ferrous iron into ferric iron; (2) polyacrylamide is added to the solvent according to the proportion of 0.05-0.1 percent; (3) the water which flows out of the neutralization reaction tank is introduced into air-entraining air floating equipment to be separated, the chemical sludge generated by air floating enters a sludge storing pot, and the clear solution directly returns to the solvent tank; and (4) the chemical sludge in the sludge storing pot is dehydrated through a plate and frame filter press, the dehydrated sludge residues (iron hydroxide) are used as other industrial raw materials, and the filtered solution returns to the solvent tank. The invention has the advantages of simple and easy whole processes, saves a large amount of energy resources, has no environment pollution, improves the galvanizing quality and saves the galvanizing cost.

The invention relates to an auxiliary device for angle steel galvanization, in particular to a numerical control penetrating and hanging line device for angle steel galvanization and a penetrating and hanging process. The numerical control penetrating and hanging line device comprises a worktable, a material storage rack, an angle steel positioning seat, a material turnover device, a feeding roller way, a material-passing roller way, a material-penetrating comb, a movable guide rail and a comb clamping lifting traveling trolley, wherein the material turnover device is mounted between the angle steel positioning seat and the feeding roller way and can easily turn over and convey galvanized angle steel falling into the angle steel positioning seat to the preset feeding roller way, so that seamless connection of the angle steel and feeding and conveying processes is realized and the conveying efficiency and the conveying quality of the galvanized angle steel are improved. Angle steel feeding, conveying and penetrating-hanging processes are integrated on the same equipment, so that the occupied site space is small, the crane occupation time is short, and the safety coefficient is high; the whole penetrating and hanging operation does not need human assistance, and the galvanized angle steel is controlled through the numerical control device to realize the steps, so that the labor intensity of penetrating and hanging is greatly reduced and the penetrating and hanging efficiency is improved.

A device for removing foreign material from a molten metal surface in a steel sheet hot-dip galvanizing process, of the present invention, comprises: a snorkel part of which the end portion is submerged under the molten metal surface of a hot-dip galvanizing bath so as to encompass a steel sheet inserted into the hot-dip galvanizing bath, in order to prevent the oxidization thereof; a snout including a dam unit having a dam forming part which encompasses the steel sheet from the end portion of the snorkel part so as to be spaced a predetermined gap from same, and which allows a molten galvanizing solution inside the hot-dip galvanizing bath to flow over toward the inner peripheral surface of the snorkel part so as to prevent the foreign material that falls onto the molten metal surface inside the snorkel part from attaching to the steel sheet; and a molten zinc discharge unit which is provided inside the snorkel part so as to pump, toward the molten metal surface inside the hot-dip galvanizing bath, the molten galvanizing solution having flowed over the dam forming part of the damp unit, thereby preventing the foreign material included in the molten galvanizing solution, having flowed over the dam forming part, from mixing into the molten galvanizing solution inside the hot-dip galvanizing bath and re-polluting the molten galvanizing solution or flowing into the snorkel part again.

The invention discloses a galvanizing technology for combination intensity of a galvanizing layer and a base material, which is used for anticorrosion processing of surface of a photovoltaic flat rack. The technology comprises the steps of cleaning, drying, galvanizing and cooling in order, and the cleaning step comprises the steps of degreasing, examining, pickling and washing in order, pickling temperature scope is between 30-35 DEG C, a pickle containing hydrogen chloride, hexamethylene tetramine and a corrosion inhibitor is used for cleaning the photovoltaic flat rack; the corrosion inhibitor contains a nitrogen compound-containing corrosion inhibitor and a sulfur compound-containing corrosion inhibitor; an assistant leaching step is provided between the drying step and galvanizing step, the assistant leaching is characterized in that the photovoltaic flat rack is immersed into a plating auxiliary for 5-8 minutes, the temperature of the plating auxiliary is between 50-57 DEG C, the plating auxiliary contains zinc chloride and ammonium chloride, the mass ratio of zinc chloride to ammonium chloride is between 1 and 4 to 1 and 10, and the plating auxiliary also contains glycerin. According to the invention, the technology route is simple, and the galvanizing layer bonding strength is good.

The invention relates to the technical field of strip steel machining, and especially relates to a control device for a pot-entering temperature of strip steel in a hot-galvanizing annealing furnace. The control device for the pot-entering temperature of the strip steel in the hot-galvanizing annealing furnace comprises a support, wherein a conveying mechanism used for conveying the strip steel, an air blowing mechanism used for blowing air to the strip steel, a heating mechanism used for heating the strip steel, a power supply mechanism used for supplying power and an electricity conducting mechanism used for conducting electricity are arranged on the support; the electricity conducting mechanism comprises a rotating rod rotationally connected to the support through a horizontal shaft, one end of the rotating rod is placed on the upper surface of the strip steel, and an electricity conducting head is arranged at the other end of the rotating rod and connected to the power supply mechanism through a conducting wire; a first receiving head which is abutted against the electricity conducting head when the electricity conducting head overturns downwards is arranged on the air blowing mechanism; and a second receiving head which is abutted against electricity conducting head when the electricity conducting head overturns upwards is arranged on the heating mechanism. According to the invention, the galvanizing quality of the strip steel can be improved.

The invention relates to the field of a hot dipping process which uses molten zinc or cadmium or an alloy coating material based on the molten zinc or cadmium and does not influence the shape, in particular to a device for controlling temperature uniformity of strip steel before entering a zinc pot and a using method of the device. The device for controlling the temperature uniformity of the strip steel before entering the zinc pot comprises a heating roller (11), a sink roller (12), a furnace nose (13), the strip steel (14), a heat treatment furnace (15) and the zinc pot (16), and is characterized in that the heating roller (11) comprises a temperature thermocouple (1), a thermocouple compensation lead wire (2), an induction heating body (3), a bearing (4), a slip ring (5), a mandrel (6), a roller body (7), a driving shaft (8), a middle shaft sleeve (9) and a temperature control device (10). The using method of the device for controlling the temperature uniformity of the strip steel before entering the zinc pot is characterized by comprising the following steps of (1) measuring, (2) calculating, (3) adjusting, and (4) safety control. By means of the device and method, the temperature control is made uniform.

The present invention discloses a photovoltaic plate frame corrosion resistance treatment method, which is used for surface corrosion resistance treatment on a photovoltaic plate frame and sequentially comprises washing, drying, hot zinc plating, and cooling, wherein the washing step sequentially comprises degreasing, inspection, acid washing, and water washing, the degreasing step is adopting a water-based metal degreaser to carry out an oil removing treatment on the photovoltaic plate frame surface, the hot zinc plating step comprises heating a zinc liquid to a temperature of 455-480 DEG C, placing the photovoltaic plate frame into the zinc liquid, maintaining for 1-1.5 min, and taking out, the zinc liquid contains 0.07-0.1% by mass of aluminum, and the leaching assisting step is set between the drying step and the hot zinc plating step. According to the present invention, the process route is simple, and the photovoltaic plate frame surface corrosion resistance quality is easily achieved.

The invention relates to a preheating-type upwardly-heating steel wire zinc-plating furnace. The preheating-type upwardly-heating steel wire zinc-plating furnace comprises a zinc furnace, a zinc pot and a water-cooled wire guiding mechanism, wherein a wire shouldering roller is arranged above the zinc pot and at the position close to the front end of the zinc furnace; a press roll is arranged above the zinc pot and at the position close to the back end of the zinc furnace; the preheating-type upwardly-heating steel wire zinc-plating furnace is characterized in that a zinc pot upwardly-heating device is arranged above the zinc furnace; a steel wire preheating system is arranged in front of the zinc furnace; the steel wire preheating system comprises steel wire preheating box furnaces, an air preheater device and the zinc pot upwardly-heating device; two steel wire preheating box furnaces are symmetrically arranged left and right; the air preheater device is arranged between the two steel wire preheating box furnaces; a flue gas inlet of the air preheater device is communicated with the front end of a flame path of the zinc pot upwardly-heating device through a first flue gas heat-preserving connection pipeline; a flue gas outlet of the air preheater device is communicated with flue gas inlets of preheating flame paths of the steel wire preheating box furnaces through a second flue gas heat-preserving connection pipeline. The preheating-type upwardly-heating steel wire zinc-plating furnace can prolong the service life of the zinc pot, save energy and effectively improve the zinc-plating quality and the zinc-plating speed.

The invention discloses a waste heat utilization device for hot-dip galvanized strip steel production. The waste heat utilization device comprises a base, a heat exchange box is fixedly connected to the left portion of the upper end of the base, a heating base is fixedly connected to the right portion of the upper end of the base, a galvanizing pot is fixedly connected to the middle of the upper end of the heating base in penetrating and inserting manners, and an air suction device is fixedly connected to the middle of the upper end of the heat exchange box; a water inlet pipe is fixedly connected to the left portion of the upper end of the heat exchange box in penetrating and inserting manners, an exhaust fan is fixedly connected to the right portion of the upper end of the heat exchangebox, an air suction pipe is fixedly connected to the middle of the upper end of the exhaust fan in penetrating and inserting manners, a treatment box is fixedly connected to the middle of the left endof the heat exchange box, and a purification device is movably connected to the upper end of the treatment box in penetrating and inserting manners; and a water outlet pipe is fixedly connected to the lower portion of the left end of the heat exchange box in penetrating and inserting manners. According to the waste heat utilization device for hot galvanizing strip steel production, hot flue gas generated by hot galvanizing can be collected, the utilization efficiency of heat energy is improved, the flue gas can be prevented from polluting the environment, and the waste heat utilization deviceis suitable for being widely applied.

The invention discloses a hot-dip galvanizing technology. The hot-dip galvanizing technology comprises the following steps of1 oil removing, specifically, a workpiece is poured into a mixed solution of 10-12g / L sodium carbonate and 12-15g / L sodium hydroxide, and the solution temperature is 90-100 DEG C until the workpiece is completely infiltrated; 2, pickling, specifically, the workpiece is put into a sulfuric acid solution of concentration of 15-20%, pickling is conducted for 5-10min, antifog and corrosion inhibitor is added in the solution, the pickling temperature is 30-50 DEG C, and washing by using clear water is conducted for 2-3 min after pickling is completed; and 3, the workpiece is washed by using warm water with the 50-60 DEG C. The hot-dip galvanizing technology is high in cooling speed of a cooling process, small in water consumption and low in energy consumption, adopts chrome-free passivation, and is environmentally friendly.

The invention relates to a steel wire electrogalvanizing trough, which comprises a lower liquid storage tank and an upper electroplating work tank. The lower liquid storage tank is communicated with the upper electroplating work tank through a drain pipeline and a circulating pump. The upper electroplating work tank is internally provided with at least two cathode pools, and an anode pool is arranged between every two cathode pools, each cathode pool is internally equipped with a cathode device, each anode pool is internally equipped with a set of anode device, the anode device consists of anode copper plates and zinc plates, the at least two anode copper plates are both arranged along the width direction of the upper electroplating work tank, and both ends of the anode copper plates are fixed on the front and back side walls of the upper electroplating work tank. Several zinc plates are disposed between adjacent anode copper plates, the planes of the zinc plates are parallel to the length direction of the upper electroplating work tank, and both ends of the zinc plates are connected to the adjacent anode copper plates. The zinc plates adopted by the invention are used both as an anode conductor and a zinc source, and lead, titanium or nickel plates are not needed any more to serve as an anode conductor, thus being conducive to improving the steel wire electrogalvanizing quality.

The invention relates to an anti-friction processing process for a connection face after galvanization of a steel structure. The process comprises the steps of galvanization processing, preparation ofanti-friction processing agents, polishing of a connection beam and a connection board of the galvanized steel structure, and transverse brushing and longitudinal brushing of the steel portion needing to be brushed. A zinc layer on the surface of the steel is not damaged, and the friction coefficient is increased at the same time.

The invention applies to the technical field of galvanization, and provides a device for an automated process of iron tower galvanization. The device comprises at least one controllable temperature regulator; every two controllable temperature regulators are mutually connected through a connecting pump; and in general, three controllable temperature regulators can be adopted for the device. The device provided by the embodiment of the invention is a technological improvement and a technical innovation in the hot-dip galvanization technology for an iron tower component. By adoption of the device, the galvanization quality is improved, and the material waste and the production cost are reduced.

The invention relates to the field of hot-dip galvanizing alloy technology and the equipment used therefor, in particular to a furnace nose for hot-dip galvanizing with a detachable slag discharge pipe and its use method. A furnace nose with a detachable slag discharge pipe for hot-dip galvanizing, comprising a furnace nose body (1), characterized in that it also includes a partition (21), a bottom plate (22), a slag discharge pipe (3), zinc Liquid suction pump (4), support (5) and liquid zinc discharge pipe (6), the lower half of the inner cavity of the furnace nose body (1) is provided with a partition (21), and the support (5) is detachable It is fixed on the bottom of the outer wall of the furnace nose body (1). A method for using a furnace nose with a detachable slag discharge pipe for hot-dip galvanizing, which is characterized in that: it is implemented in sequence as follows: A. When the furnace nose is in operation, insert the lower part of the furnace nose body (1) into the zinc pot ( 7) Under the zinc liquid surface; B. When the furnace nose moves laterally, release the detachable fixation respectively. The invention has good slag discharge effect, high galvanizing quality, convenient disassembly and assembly, and strong adaptability.

The invention relates to a production process of a galvanized steel coil, comprising the following steps: S1, successively uncoiling the cold-rolled hard steel coil, cutting the head and tail, and welding; S2, preparing a degreasing solution, and sequentially disposing the steel coil processed by S1 Immersion in degreasing solution, brushing with rollers, drying with hot air, and treatment with an inlet looper; S3, annealing the steel coil obtained in S1; S4, putting the annealed steel coil into a zinc pot, soaking for 4-5s, and then blowing through an air knife in turn Sweep, cool, dry with hot air, and smooth to obtain a galvanized steel coil; S5, heat the galvanized steel coil, take it out, suck passivation droplets on the surface of the galvanized steel coil with a straw, and dry it; S6, after processing S5 The steel coil obtained in S6 is treated with anti-fingerprint coating, and oiled after being exported through the looper; S7, the steel coil obtained in S6 is slit, coiled, uncoiled, and packaged. The production process of the galvanized steel coil in the present invention can effectively remove pollutants such as dust and iron powder firmly adhered to the surface of the steel coil, which is beneficial to improve the quality of the galvanized steel coil, thereby prolonging the galvanized steel coil. The service life of the roll.