61results about How to "Reduce zinc consumption" patented technology

This invention discloses a method for hot-dip galvanizing on steel work piece. The method comprises: checking black work piece, suspending, degreasing, rinsing, washing with acid, rinsing, treating with a galvanizing aid, drying with hot air, hot-dip galvanizing and cooling. During the hot-dip galvanizing process, Al, Ni, Si and rare earth element are added into the galvanizing solution. The galvanizing solution comprises: Al 7-9 wt. %, Ni 3-6 wt. %, Si 0.5-0.8 wt. %, rare earth element 0.5-1.0 wt. %, and Zn as balance. The addition of Si can reduce Fe content in the galvanizing solution, and the formation of Zn-Fe alloy residue. The Zn consumption is lowered by nearly 1%, and the surface quality of galvanized steel is improved.

The invention relates to separate zinc from bismuth liquid and distill zinc from silver zinc dregs after taking refining zincification desilverization process. It puts the bismuth liquid into vacuum container and whisking, making zinc vaporize from bismuth liquid to gain zinc vapor. Vacuuming to make the vapor rise to condensing apparatus to condense to solid and adhere at condensing apparatus and gathering. Inducing the tail gas into purification device to take purifying and discharge. The method to distill zinc from silver zinc dregs is almost the same, and adds the process of melting silver zinc dregs. The device includes bismuth fine furnace, vacuum container, condensing device, whisking device, subsidence purifying device and vacuum pump. The invention could lower zinc consumption, and good economic benefit and avoid pollution of toxic gas and chlorine alkali dregs.

The invention relates to a hot dip galvanizing method for the iron and steel product, which belongs to the hot dip plating engineering in the metallurgy field. The invention mainly solves the technical problem that a hot dip galvanizing method for the iron and steel product utilized directly aiming at the faults in the normal hot dip galvanizing process that the excessive consumption of the zinc and the low efficiency utilization of the heating system is provided. The heating method of the dip galvanizing kettle of the invention is side surface heating, thus, the temperature of the liquid zinc can be conveniently controlled, the deposition of the zinc dross can be accelerated, and the zinc quantity taken away by the galvanizing piece can be reduced; because the ferric salt content inside the assistant galvanizing tank is controlled, the zinc dross quantity inside the zinc kettle is reduced; simultaneously, the output rate per hour is controlled to stabilize the heat loss and reduce the added zinc consumption caused by temperature variation. Through the progress of the process, the zinc consumption is reduced, the heat energy is fully utilized, the fault of the excessive zinc consumption caused by normal process and low efficiency utilization coefficient of the heating system are overcome, the quality is ensured, simultaneously, the resources are saved.

Disclosed is an electromagnetic cleaning means for hot galvanizing liquid which comprises an induction coil, a honeycomb shaped square ceramic tube, a heat insulation sleeve and a housing of refractory material, wherein the ceramic tube is arranged inside the induction coil, the heat insulation sleeve is arranged between the induction coil and the ceramic tube. The device is placed in the zinc coating liquid located inner the belt steel for cleaning treatment.

A combined purification apparatus is provided for continuously removing zinc dross from molten zinc in hot dip galvanization, which belongs to the field of metal smelting technique. The apparatus comprises a molten zinc delivery device, a first-step filter, and a second-step electromagnetic deslagging device. The molten zinc delivery device comprises a molten zinc pump and a molten zinc flow channel. The first-step filter is a ceramic foam filter. A zinc pumping pipe of the molten zinc pump is immersed into a zinc pot. The ceramic foam filter is arranged inside the molten zinc flow channel. The second-step electromagnetic deslagging device is arranged in the middle inside the molten zinc flow channel, and comprises an induction coil, a porous ceramic pipe, a heat-insulating jacket, and a fire-resisting shell, wherein the porous ceramic pipe is arranged inside the induction coil; the heat-insulating jacket is used to isolate the induction coil from the porous ceramic pipe; the induction coil, heat-insulating jacket and porous ceramic pipe are all arranged inside the fire-resisting shell. The invention can efficiently remove zinc dross from molten zinc in hot dip galvanization at the early formation stage, and helps to reduce the zinc slag defect of steel work piece in hot dip galvanization and improve the surface quality.

The invention discloses an on-batch steel hot-galvanizing environment-friendly type multi-effect galvanization helping liquid and a use method thereof. Each liter of the on-batch steel hot galvanizing environment-friendly type multi-effect galvanization helping liquid comprises the following substances: a filming agent, an accelerant, a complexing agent, an anti-explosion zinc agent and water. The invention further provides the use method of the on-batch steel hot galvanizing environment-friendly type multi-effect galvanization helping liquid. The use method requires that the working temperature is 50-60 DEG C, the pH value is 3.5-5, and the galvanization time is 3-6 minutes, and a workpiece can be directly fed to a next zinc immersion procedure after galvanization helping without being dried, so that the time is saved, and the efficiency is improved. In addition to the capability of meeting the common requirements of an on-batch steel hot-galvanizing process, the on-batch steel hot-galvanizing environment-friendly type multi-effect galvanization helping liquid further has the characteristics that the energy consumption for heating the galvanization helping liquid is reduced due to adoption of intermediate temperature galvanization helping, the investment is reduced as no drying is needed after galvanization helping, and the energy consumption for drying is reduced; the increase of Fe<2+> in the galvanization helping liquid is effectively controlled, zinc ash and zinc slag are reduced in zinc immersion, no dust is generated, explosion is effectively avoided, and multiple effects that a galvanization helped film layer is uniform and free of galvanization omission, a zinc layer is bright, and the like, are achieved.

The invention provides a method for comprehensive treatment of ferrous ions in a hot galvanizing assistant liquid, which relates to a method for removal and treatment of ferrous ions in a hot galvanizing assistant liquid during batch production of galvanization products. The method comprises the following steps: (1) preparing raw materials consisting of hydrogen peroxide and potassium permanganate according to a ratio, oxidizing iron ions and combinedly adding hydrogen peroxide and potassium permanganate; (2) changing a hydrogen peroxide hot galvanizing assistant liquid liquid-level feeding manner into a hot galvanizing assistant liquid tank-bottom feeding manner, namely, pumping hydrogen peroxide into the bottom of a plating assistant tank with a water pump so as to reduce decomposition of hydrogen peroxide and release of oxygen; (3) starting an aeration pipe to stir the hot galvanizing assistant liquid, then adding potassium permanganate and carrying out a secondary reaction; (4) measuring a pH value after completion of the reaction, adding corresponding ammonia water according to obtained data and carrying out full adjusting and stirring so as to allow the pH value to be 5 to 6; and (5) adding a flocculating agent to accelerate precipitation when the pH value is 5 to 6, pumping out a supernatant, i.e., the treated hot galvanizing assistant liquid, in the plating assistant tank, carrying out recovering, pumping a precipitate into a filter press for press filtration and recovering a filtrate to the plating assistant tank.

The invention discloses a component design and preparation method for a zinc-aluminum alloy pipe. The zinc-aluminum alloy pipe comprises, by weight, 36.00%-69.00% of zinc, 31.00%-64.00% of aluminum, 0.01%-1.00% of copper, 0.01%-1.00% of magnesium, 0.01%-1.0% of tin, 0.01%-1.00% of silver, 0.01%-2.00% of titanium, 0.01%-0.50% of boron, 0.01%-0.70% of cerium and 0.01%-0.20% of praseodymium, and the sum of the weight percentage is 100%. The obtained zinc-aluminum alloy pipe can be used for manufacturing a mold and a pipe fitting in a complex shape and used for manufacturing a delay element in the civil explosive industry according to the component and performance differences, so that an existing lead-antimony alloy pipe which is severe in environmental pollution and toxicity is replaced; and meanwhile, zinc-aluminum alloy is light in proportion and cheaper than a copper alloy material, the cost can be obviously reduced, and the zinc-aluminum alloy pipe can be widely used in metallurgy, mines, light industry, food, chemical industry, printing, mechanical equipment and other fields.

The invention relates to long material horizontal hot plating equipment and a hot plating method. The hot plating equipment comprises a horizontal overflow hot plating device; the horizontal overflowhot plating device comprises a high-temperature resisting pipe, a high-frequency power supply, a main zinc pot, an overflow zinc pot and a protective gas source; the main zinc pot holds a hot platingmaterial; the upper parts of the main zinc pot and the overflow hot plating zinc pot are both sealed; a branch pipe for introducing a protective atmosphere is arranged at the middle part of the high-temperature resisting pipe; a high-frequency induction coil sleeves the front part of the high-temperature resisting pipe, and is connected with a high-frequency induction power supply; the tail end ofthe high-temperature resisting pipe is tightly connected with a workpiece inlet of the overflow zinc pot; a temperature measuring gauge is arranged near the tail end of the high-temperature resistingpipe; the overflow zinc pot is positioned above the main zinc pot; long material workpieces transversely penetrate through the overflow zinc pot; a lifting pump is arranged on the overflow zinc pot;and an overflow port is arranged above the overflow zinc pot. The equipment can provide a closed protective gas system to long materials, and finishes continuous hot plating process for the long materials.

The invention discloses a rare-earth multi-element alloy coating and a hot-dip galvanizing method thereof. The rare-earth multi-element alloy coating comprises the following main components: rare earth, aluminum, nickel, magnesium and zinc. The hot-dip galvanizing method comprises the following steps: (1) mix-melting intermediate alloys, namely Al-RE-Mg and Zn-Ni; (2) mix-melting a multi-element rare-earth alloy; (3) dredging slag; (4) casting; and (5) applying. The rare-earth multi-element alloy coating and the hot-dip galvanizing method thereof have the advantages that: firstly, difficulty of directly adding multiple elements with different melting points into a zinc liquid to melt and the impossibility problem of adding high-melting-point elemental metal elements into the zinc liquid to melt are solved; secondly, the multiple elements can be completely and quickly molten and dispersed, so that the hot-dop galvanizing method is easy to operate and control in a practical production process; thirdly, the dilution capability, the dispersive capacity, the mobility and the uniformity of the zinc liquid are strengthened, so that the zinc consumption is reduced by 5%-15%, the cost is reduced and the benefits are increased; and fourthly, the corrosion resistance of the rare-earth multi-element alloy coating is doubled in comparison with that of a conventional hot dip galvanized coating.

The method to resist Zinc solution corrosion comprises: cover a piece of soft fabric that resists to Zinc solution corrosion and 480-960Deg and composes a plurality of oxides on the steel product surface to insulate the product from Zinc solution. This invention overcomes defects in prior art, reduces difficulty and cost, and benefit to Zn cooker and inner-dip heater.

The invention relates to a graphene modified polyaspartic acid ester zinc-containing coating and a preparation method thereof. The coating comprises a component A capable of curing to form a film anda component B containing a curing agent, the component A comprises high solid content low viscosity polyaspartic acid ester resin, an organic solvent, a dispersant, graphene, zinc powder, an antirustpigment, a leveling agent and an anti-settling agent; and the component B is isocyanate or a mixture of isocyanate and an organic solvent. The graphene modified polyaspartic acid ester zinc-containingcoating belongs to an environment-friendly green product, is higher in drying speed compared with an existing common epoxy zinc powder coating, and can meet the wet-to-wet spraying process requirements, and the one-time film forming thickness can reach 120 [mu]m or above, so that the construction efficiency is greatly improved; the salt spray resistance is better, and the adhesive force is good;the method provided by the invention is environment-friendly in production process, simple in process, free of sanding process, low in cost and beneficial to industrial large-scale production.

The invention provides a special zinc with a purification function for hot dip. The special zinc with the purification function for the hot dip is characterized in that a zinc ingot is taken as a benchmark, wherein at least two elements among 0.001%-1.00% of mixed rare earth (La-Ce), 0.001%-2.00% of tin (Sn), 0.001%-1.00% of bismuth (Bi), and 0.12% nickel (Ni) are added into the zinc ingot, and the balance is intrinsic impurities of the zinc ingot. According to the special zinc with the purification function for the hot dip, the added metal elements in the zinc ingot can preferentially react with a nonmetal generated in a zinc plating solution to be discharged, and the special zinc with the purification function for the hot dip has the beneficial effects that 1, the reaction between the nonmetal and the zinc is prevented, the zinc consumption is reduced, the fluidity is improved, and the zinc plating quality is ensured, and the cost is reduced; and 2, the problem of the nonmetal impurity purification is solved, the non-suspend production purification are realized, and the productivity is improved.

The invention relates to a centrifugal dezincification device used for hot galvanizing, which belongs to a hot galvanizing device and is characterized in that the hot galvanizing device mainly comprises a bracket, a protective barrel, a dezincification basket, a lower bearing mounting plate, a main shaft, a main nut, a supporting plate, an upper bearing seat, a lower bearing seat, a big belt pulley, a small belt pulley, a belt, a motor base plate, a motor and an adjusting screw rod, wherein a top plate is welded on the top of each vertical rod, a barrel wall is welded on the top plate to form the protective barrel, and the lower bearing mounting plate is horizontally welded between the middle sections of the vertical rods. The upper bearing seat is fixedly arranged on the bottom surface of a base plate of the protective barrel, the lower bearing seat is fixedly arranged on the lower bearing mounting plate, the main shaft is arranged in the upper bearing seat and the lower bearing seat in a penetrating mode, the disc-shaped supporting plate is welded on the upper end surface of a shaft shoulder of the main shaft, the grid-shaped dezincification basket is fixedly arranged on the supporting plate, the motor base plate and the motor are hinged on the base plate and the front right surface of the lower bearing mounting plate, the dezincification basket is driven to rotate by the driving of the belt, a workpiece is dezincified, the quality is high, and the consumption of zinc is low.

The invention relates to a process method for obtaining a steel wire hot galvanizing and alloy thick plating layer. The process method comprises the following steps: performing oil and rust removal treatment on the surface of a steel wire at a wiring speed in a range of 150-500 m/min, putting the treated steel wire into an induction heating furnace, and performing induction heating on the steel wire under the action of protective gas at the induction heating temperature 0-70 DEG C lower than a plating solution temperature, wherein the plating solution temperature is 420-520 DEG C, and the induction heating time is 0.5-2 seconds; and discharging the steel wire out of the induction heating furnace, entering a zinc pot from a closed steel pipe, vertically leading out a plating solution through a ceramic wire pressing shaft, entering a wiping device, and finally cooling to obtain the thick-plated steel wire. According to the method, the steel wire subjected to surface treatment can enter the zinc pot after being subjected to induction heating by protective gas of which the temperature is equal to or lower than the hot plating temperature at a relatively high wiring speed, namely in a range of 150-500 m/min, and then is vertically led out of a liquid surface to be wiped, so that a high-binding-force thick plating layer meeting the strength requirement is obtained.