32results about How to "Reduce the degree of corrosion" patented technology

The invention relates to a construction method for dam body seepage preventing curtain grouting and provides a construction method for the dam body seepage preventing curtain grouting. The grouting is carried out by a technology of dense holes, high pressure, fine cement wet grinding and concentrated slurry, and the seepage preventing ability, the corrosion resistance and the durability of a dam body curtain are improved; the seepage is prevented in a way of front blockage and rear discharge, the downstream seepage escapement point elevation of a dam body and the uplifting pressure in a dam are reduced, and the problems of frozen thawing and frozen expansion of concrete are solved. The construction method for the dam body seepage preventing curtain grouting comprises the following steps of: a. downwards drilling a group of curtain grouting holes at the top of the dam; b. drilling radial grouting holes on the upstream surface in a basic gallery; c. downwards drilling curtain connection grouting holes extending into a dam foundation in the basic gallery; d. carrying out grouting by high pressure, fine cement wet grinding and concentrated slurry; and e. drilling a water discharge structure which is communicated with the basic gallery in the dam body. The invention is mainly used for the seepage prevention and discharge reinforcement processing of the concrete dam.

A soft solder without lead tin base with low corrosion degree, good weldability and high intensity and antioxidation during dip-soldering of the welding object, has following four items: each is composed of components of following quality percent by weight of total quality: 1.4.0-8.5% of Cu, 0.1-2.6% of Bi, 0.01-1.2% of Ni, surplus is Sn; 2.4.0-8.5% of Cu, 0.1-2.6% of Bi, 0.01-1.2% of Ni, 0.001-0.15% of P, surplus is Sn; 3.4.0-8.5% of Cu, 0.1-2.6% of Bi, 0.01-1.2% of Ni,0.001-0.3 of RE, surplus is Sn; 4.4.-8.5% of Cu, 0.1-2.6% of Bi, 0.01-1.2% of Ni, 0.001-0.3 of RE, surplus is Sn. The invention is adapted to assembling and packaging for electronic industry without lead.

The invention discloses an array substrate and a manufacturing method thereof, a display panel and a display device, which are used for reducing the probability of DGS generation of a display device and improving the yield of an array substrate. The array substrate comprises a substrate, a source-drain electrode metal layer located on the substrate and an inorganic insulating layer located on thesource-drain electrode metal layer. The array substrate comprises a display area and a peripheral area surrounding the display area. The inorganic insulating layer has a first thickness in the displayarea and a second thickness in the peripheral area, wherein the first thickness is smaller than the second thickness.

The invention discloses an air conditioner condensed water and rainwater collecting and utilizing integrated system which comprises a roof rain collecting tank, a rainwater collecting pipe, a condensed water collecting pipe, a rainwater filter device and a water storage tank. The roof rain collecting tank is arranged at the top end of a building. The rainwater filter device is arranged at the bottom end of the building, and the roof rain collecting tank communicates with the rainwater filter device through the rainwater collecting pipe. The rainwater filter device is sequentially provided with a reaction layer, a filter layer and a water purification layer from top to bottom. A condensed water drainage pipe of an air conditioner arranged on the building communicates with the condensed water collecting pipe through a four-way connector. The water purification layer of the rainwater filter device and the lower end of the condensed water collecting pipe communicate with the water storage tank arranged on one side of the building through a drainage pipe. By the adoption of the air conditioner condensed water and rainwater collecting and utilizing integrated system, rainwater and air conditioner condensed water can be collected and stored, corrosion of the air conditioner condensed water to the outer wall of the building can be prevented, and meanwhile, the air conditioner condensed water and rainwater can be recycled for cleaning, greening and irrigation.

The invention relates to the field of irrigation, more particularly to a cloud control intelligent agricultural ecological irrigation system. The cloud control intelligent agricultural ecological irrigation system comprises a detection station, a cloud server, a terminal, a pump station and a delivery pipeline, wherein the pump station comprises a pump house; a pump is disposed within the pump house; a distribution bin is disposed outside the pump house; the distribution bin is internally provided with a general pipe which communicates to the pump; a plurality of divided manifolds with electronically controlled valves are evenly distributed on the general pipe; the delivery pipeline is in communication with the divided manifolds; the delivery pipeline comprises a plurality of nozzle connecting seats, and a connecting pipe communicates between adjacent two nozzle connecting seats in a sealing mode; each nozzle connecting seat comprises a base, wherein the upper end of the base is provided with a groove; the groove communicates with the connecting pipe; the base is detachably provided with a sealing cover; the sealing cover is provided with a short pipe which communicates to the groove; the short pipe penetrates through the sealing cover upwards and detachably communicates with a vertical pipe through a joint; and the upper end of the vertical pipe is connected with a spray head.The working stability is high, and maintenance is facilitated.

The invention relates to a concrete tube with a lining elastic plastic sheet. The concrete tube comprises a lining elastic plastic sheet and a concrete structure layer wrapping the outer side of the lining elastic plastic sheet, the lining elastic plastic sheet is composed of a base body layer and an elastic layer, the base body layer is arranged on the inner side, the elastic layer is arranged onthe outer side and is used for being in contact with the concrete structure layer, an anchoring structure is arranged on the outer side of the lining elastic plastic sheet, and the anchoring structure extends into the concrete structure layer, so that the lining elastic plastic sheet materials and the concrete structure layer are firmly combined, and better sealing performance is achieved. The anchoring structure consists of a connecting section and an anchoring section, the connecting section is directly connected with the lining elastic plastic sheet, and the anchoring section is directly connected with the connecting section. Compared with the prior art, the concrete tube has the advantages of being good in sealing effect, long in service life, good in anti-corrosion effect, and low inmaintenance cost; and the service life of the concrete tube can be obviously prolonged by 10-20 years.

The invention discloses an apparatus for the surface treatment of pipelines and pipe fittings before using. The apparatus comprises a group of pretreatment tanks. The pretreatment tank group comprises a degreasing tank, an acid washing tank, a flushing tank, a neutralizing tank, and a passivating tank. The degreasing tank, the acid washing tank, the flushing tank, the neutralizing tank, and the passivating tank are parallelly arranged in sequence. The apparatus also comprises a portal frame, whose two supporting points are respectively arranged on the left side and right side of the pretreatment tank group. Each pretreatment tank of the pretreatment tank group is arranged under the crossbeam of the portal frame. A crane, which can move along the length direction of the crossbeam, is arranged on the crossbeam. The provided pretreatment system can improve the pretreatment efficiency before welding of pipelines or pipe fittings, and improves the pretreatment quality at the same time.

The invention discloses a drainage and deodorization breathing device and an inspection well. The drainage and deodorization breathing device comprises a lower well lid, a water curtain nozzle arranged on the lower well lid and a plurality of deodorization water bends arranged on the lower well lid; the water curtain nozzle is arranged above the lower well lid and is connected with a water inlet pipe; each deodorization water bend comprises a vertical pipe and a bent pipe connected to the vertical pipe; the vertical pipes are arranged on the lower well lid and communicate with the upper portion of the lower well lid; the included angles between the vertical pipes and the bent pipes are smaller than or equal to 90 degrees; and the bent pipes are arranged below the lower well lid. According to the drainage and deodorization breathing device and the inspection well, the problem that odor emitted by high-concentration sewage enters the atmosphere through the inspection well lid can be solved, and the influence of malodorous gas on the surrounding environment of the inspection well is reduced; and meanwhile, the upper half part of the well can be kept clean by adding water to dilute and cool a pipeline of an underground part, so that the problem that the inspection well is polluted and damaged by digests in the pipeline is solved, the corrosion degree of the pipeline inspection well is reduced, and the service life of the pipeline inspection well is prolonged.

The invention relates to the technical field of lithium batteries, in particular to a power type low-temperature lithium battery and a preparation method thereof. The lithium battery comprises a positive current collector and a positive plate coating the positive current collector. The lithium battery is prepared from, by weight, 90-98 parts of lithium cobalt oxide, 0.4-2 parts of nanotube conductive agent, 0.4-2 parts of conductive agent, 6-0.8 part of binder, 94-97 parts of graphite, 0.4-2 parts of conductive carbon black, 1-5 parts of a polyacrylate binder and 0.5-2 parts of an additive. The 3C detection discharge capacity of the lithium battery under the environment condition of-40 DEG C reaches 80% or above of the initial capacity under the environment condition of 25 DEG C, the power performance of the lithium battery under the low-temperature condition is excellent, and the safety performance of the lithium battery is relatively outstanding; and compared with the performance of an existing lithium battery, the 0.2 C discharge capacity of the lithium battery of the invention under the low temperature condition reaches 70% of the capacity under the environment condition of 25 DEG C, the discharge capacity of the lithium battery is greatly improved, the application field range of the lithium battery is widened, and meanwhile, the safety problem of the lithium battery is relatively solved.

An energy-saving cooker is composed of a main body consisting of wall and bottom, and a corrugated metallic plate fixed to the external surface of said bottom for increasing the electromagnetic wave receiving area, so saving electric energy.

The invention discloses a sputtering source water treatment device and a water treatment method. The device comprises a water inlet pipe (1), a sputtering source assembly (2) and a water outlet pipe (3) which are sequentially arranged, wherein at least one magnet (4) the surface of which is attached by a ceramic film is arranged in the sputtering source assembly (2). According to the device disclosed by the invention, the ceramic film is attached to the surface of each magnet in the sputtering source assembly, so that when water passes through the sputtering source assembly, the magnets which are easily corroded in the sputtering source assembly are protected in the actual application process, and the corroded degree of the sputtering source assembly is further greatly reduced. Therefore, the sputtering device is effectively protected, and the service life of the device is greatly prolonged.

The invention discloses an AlNiCo battery raw material filter device, comprising a filter box, one side of the filter box is fixedly connected with a lower flange, and the upper end of the lower flange is detachably connected with an upper flange, and the lower flange is A sealing groove is reserved on the inner side of the disc, and a filter assembly is fixedly connected to the inside of the treatment box, and the bottom end of the treatment box is filled with filtrate, and the lower end of the right side of the exhaust pipe extends to the interior of the filtrate through the filter assembly, and the treatment box The right side of the upper end is fixedly connected with a discharge pipe, the lower end of the fixed frame is fixedly connected with an insert block, and the insert block and the slot are inserted into each other, the inside of the fixed frame is fixedly connected with a filter barrel, and the outside of the fixed frame is fixedly connected with a positioning card The positioning bar and the engaging block are engaged with each other, and the upper end of the fixed frame is fixedly connected with a handle. The Alnico battery raw material filter device has good corrosion resistance, is convenient to replace the filter element, and can purify acid gas, thus having good practicability.

The invention discloses a multi-group guide vane composite transmission device for tidal energy power generation, which includes an extrusion frame, an extrusion plate, a first guide vane fan, a rotor permanent magnet direct drive generator and a support tube. The extrusion frame The surface of the right side is bonded and fixed with a gasket, and the inside of the gasket is provided with a push plate, the left end of the push plate is welded and fixed with an extrusion plate, and the outer surface of the extrusion plate is provided with a connecting ball, and the extrusion frame A connecting pipe is threadedly connected to the left side surface of the partition block, a support shaft is installed on the upper surface of the partition block, and the first guide vane fan is fixed on the lower part of the outer surface of the support shaft by bolts, and the upper end of the support shaft is fixedly connected with a permanent rotor. Magnetic direct drive generator. The multi-group guide vane composite transmission device for tidal energy power generation is equipped with a connecting frame, an air outlet, a support pipe, a rain shield, an air inlet and a blocking plate, which can reduce the degree of corrosion inside the entire device and relatively improve the overall performance of the device. service life.

Barrel-shaped tungsten crucible, including a barrel-shaped crucible body and a bushing inside the crucible body. There is a gap between the outer wall of the bushing and the inner wall of the crucible body. The bottom surface of the bushing is above the bottom surface of the crucible body. There are at least two notches, the angles between two adjacent notches are the same, and the depth of each notch is the same. The bushing has a barrel-shaped structure, and the upper part of the outer wall of the bushing is fixedly connected with supporting rods corresponding to the notches. Corresponding clamps are set in the gap, the ends of the support rods protrude out of the gap, vent holes are spaced apart on the side wall of the bushing, and blanking holes are spaced apart at the bottom of the bushing. The invention has the advantages of simple structure, stable operation, convenient maintenance and replacement, long service life and uniform temperature distribution.

A soft solder without lead tin base with low corrosion degree, good weldability and high intensity and antioxidation during dip-soldering of the welding object, has following four items: each is composed of components of following quality percent by weight of total quality: 1.4.0-8.5% of Cu, 0.1-2.6% of Bi, 0.01-1.2% of Ni, surplus is Sn; 2.4.0-8.5% of Cu, 0.1-2.6% of Bi, 0.01-1.2% of Ni, 0.001-0.15% of P, surplus is Sn; 3.4.0-8.5% of Cu, 0.1-2.6% of Bi, 0.01-1.2% of Ni,0.001-0.3 of RE, surplus is Sn; 4.4.-8.5% of Cu, 0.1-2.6% of Bi, 0.01-1.2% of Ni, 0.001-0.3 of RE, surplus is Sn. The invention is adapted to assembling and packaging for electronic industry without lead.

The invention provides a measuring method. The measuring method includes the steps that molten salt is added into a molten salt electrolytic bath; a measuring rod sticks into the molten salt electrolytic bath; the distance between the position, at the opening of the molten salt electrolytic bath, of the measuring rod and the end, sticking into the electrolytic bath, of the measuring rod is defined as A0; the height of molten salt adhering to the measuring rod is the molten salt liquid level height; electrolysis solid is added; the measuring rod sticks into the molten salt electrolytic bath; the distance between the position, at the opening of the molten salt electrolytic bath, of the measuring rod and the end, sticking into the electrolytic bath, of the measuring rod is defined as A1; and the height of the electrolysis solid in the molten salt electrolytic bath is obtained on the basis of the difference between A0 and A1. The measuring method has the beneficial effects that as long as the measuring rod sticks into the electrolytic bath, the molten salt liquid level height and the height of the electrolysis solid can be obtained; compared with the prior art, the measuring method is simpler and more convenient, and measuring results are more accurate due to the fact that the measuring method is not influenced by the complex structure of a molten salt electrolysis device in the prior art; and the corrosion degree of the measuring rod can be reduced.

The invention discloses a vacuum brazing process for reducing corrosion of an assembly of a GH3536 honeycomb and a GH4738 ring piece, and belongs to the technical field of welding of nickel-based high-temperature alloy. Comprising the following steps that oxide skin, oil stains and other impurities on the surface to be welded are removed; assembling and positioning the honeycomb and ring assembly; brazing filler metal is preset, the melting point of the brazing filler metal ranges from 985 DEG C to 995 DEG C, the boron content is not higher than 2.5 wt.%, and the use amount is controlled to be about two times of the use amount needed for filling a weld joint; and vacuum brazing treatment is conducted, the brazing temperature ranges from 1030 DEG C to 1040 DEG C, and the heat preservation time ranges from 6 min to 10 min. According to the method, the brazing heat preservation temperature and heat preservation time are optimized, the content of boron in the brazing filler metal and the using amount of the brazing filler metal are strictly controlled, an unexpected effect is achieved in the aspect of reducing base metal alloy corrosion, and then the structural strength of the honeycomb is improved. After being treated by the process, the tensile strength of a brazed joint at 730 DEG C is about 290 MPa, and the requirements of technical conditions are completely met.

The invention discloses a joint structure of a concrete rail board. The joint structure comprises a first concrete rail board body and a second concrete rail board body. A joint is formed between the first concrete rail board body and the second concrete rail board body, a transparent water-absorbing expanding water stopping strip is arranged at a joint opening in the joint, the cross section of the water-absorbing expanding water stopping strip comprises a transverse edge and a vertical edge, the transverse edge crosses to the joint, the vertical edge extends into the joint, grooves are formed in the two sides of the transverse edge and the two sides of the vertical edge respectively, the first concrete rail board body and the corresponding portion of the concrete rail board and the groove are provided with arc protrusions, and the transverse edge of the water-absorbing expanding water stopping strip is respectively fixed to the first concrete rail board body and the second concrete rail board body through rivets. The joint structure of the concrete rail board is good in waterproof effect, and meanwhile evaporation of internal water is not influenced; sunshine can also smoothly illuminate in the joint, the joint cannot be prone to microorganism breeding, the corrosion-resistant capacity of the joint is enhanced accordingly, and the service life of the joint structure is further prolonged.

The invention provides a method for producing composite cooking tool, and relative method, for resolving the problems as low thermal efficiency, long cooking time and short service life. The inventive method comprises that A, producing body of cooling tool as a, material selection, cold rolling, b, washing, drying, c, roller pressing, d, drawing, B, returning bottom as a, washing, drying, b, thermally forging or solder welding, c, surface treatment. The inventive composite cooking tool comprises a body and a bottom plate, wherein the bottom plate has welded metal plate and metal sheets from inner to outer via thermal forging or solder welding, the body has two or three metal layers welded via thermal forging or solder welding, and the body and the bottom plate are welded together via thermal forging or solder welding. The invention has simple process, low cost, uniform heated and long service life.

The invention provides a steel mill integrated sewage treatment system with a low dosage and a high recovery rate. A regulation tank, an efficient sedimentation separation device, a neutralization reaction pool, a V-shaped filter, an intermediate water pool, a self-cleaning filter, an ultrafiltration device, an ultrafiltration water tank, a No.1 security filter, a No.1 concentration device and a reuse water pool are sequentially communicated by pipelines; the No.1 concentration device is provided with a No.1 concentrated water outlet; the No.1 concentrated water outlet is communicated with theinterior of a No.1 concentrated water pool by a pipeline; the efficient sedimentation separation device comprises a rapid mixing pool, a flocculoreaction pool and a sedimentation separation pool; a sludge discharge hopper is arranged at the bottom of the sedimentation separation pool; a lifting pump is arranged at the upper part of the sludge discharge hopper; the lifting pump is communicated with the rapid mixing pool by a pipeline; a sludge discharge outlet is formed at the bottom of the sludge discharge hopper; the sludge discharge outlet is communicated with a sludge storage pool by a pipeline. The invention further provides a method for treating sewage by the system. According to the invention, sludge with catalyst properties flows back, the activity and the sedimentation effect of floccule are reinforced, and a flocculation agent is saved; the recovery rate of the system is improved.

The invention discloses a steel bar fixing and placing frame convenient to for storage and taking. The steel bar fixing and placing frame convenient to for storage and taking comprises a main body. A rainproof top cover, placing frame bodies and a frame body are arranged at the top end of the main body, side plates, a plurality of rolling bars and fences are symmetrically arranged on the two sides of the placing frame body, grid bottom universal wheels are arranged at the bottom ends of vertical bars, and specially-shaped plates are arranged at the bottom of the frame body. Frame bottom universal wheels are arranged at the bottom ends of the specially-shaped plates, material guide plates are arranged at the top ends of the special-shaped plates, a guide device is arranged in the center of the bottom of the frame body, second steel plates connected with the placing frame bodies are arranged at the bottom of the frame body, flow isolation devices are arranged in the centers of the second steel plates, and a plurality of shelves are arranged at the top end of a first steel plate. A cart is movably arranged at one end, far away from the frame, of each material guide plate. The steel bar fixing and placing frame convenient to for storage and taking comprises a main body has the beneficial effects that the corrosion degree of reinforcing steel bars can be reduced, the frame can be disassembled at will and stored in a layered manner, different reinforcing steel bars can be stored, redundant workpieces can be stored, the reinforcing steel bars can be manually controlled to sequentially slide downwards and move out in multiple directions, and overall stable movement can be achieved.

The invention discloses a raw material filtering device for an aluminum-nickel-cobalt battery. The device comprises a filtering tank, a lower flange disc is fixedly connected to the outer side in thefiltering tank, and an upper flange disc is detachably connected to the upper end of the lower flange disc; a sealing groove is reserved in the inner side of the lower flange disc, a filtering assembly is fixedly connected into a treatment tank, and the bottom of the treatment tank is filled with a filtering solution; the lower end of the right side of an air discharging pipe penetrates through the filtering assembly and extends into the filtering solution, a discharging pipe is fixedly connected to the right side of the upper end of the treatment tank, and an insertion block is fixedly connected to the lower end of a fixing frame and inserted in an insertion groove; a filter element barrel is fixedly connected into the fixing frame, positioning clamping strips are fixedly connected to theouter side of the fixing frame and clamped to clamping blocks, and handles are fixedly connected to the upper end of the fixing frame. The raw material filtering device for the aluminum-nickel-cobaltbattery has good corrosion resistance, a filter element is convenient to replace, acid gas can be purified, and accordingly the device has good practicability.

The invention relates to a socket, and especially relates to a pull off socket clamping device comprising a pull off socket (2), clamping sheets (3), and supports (5) in a shape of a Chinese character ji; the pull off socket (2) is clamped between the two clamping sheets (3); two ends of the clamping sheet (3) are respectively fixed on one end of the two supports (5) in a shape of a Chinese character ji; the clamping device is safe and reliable, easy to maintain, and has excellent structure rigidity; the support has a damping function, so the pull off socket can be reliably fixed; when a plug is pulled off, a socket arc groove has even bearing force, so a lead cannot be pulled to split, and no pull off angle deviation can be formed; in addition, the fixed device can be mounted in a plane, the whole device is installed in a cabin, thus greatly reducing corrosion level of the fixed device, and improving the fixation reliability.

The invention discloses a cheese low-temperature pretreatment process. The cheese low-temperature pretreatment process comprises primary flow washing, bleaching, neutralization, secondary flow washing, drying and oxidation treatment. Through primary flow washing, bleaching, neutralization, secondary flow washing, drying and oxidation treatment, the cheese low-temperature pretreatment process can greatly improve yarn cleanthreadss, effectively reduce yarn damage, greatly improve yarn hygroscopicity or wettability, increase adhesiveness between yarns and dyes and facilitate subsequent dyeing.

The invention discloses a method for extracting and separating rubidium ions from salt lake brine. The method comprises the following steps weighing a proper amount of an extracting agent, dissolvingthe extracting agent in a diluent, and uniformly stirring to form an organic phase; concentrating salt lake brine into brine with the mass concentration of rubidium ions higher than 10 mgL to obtain awater phase; mixing the organic and aqueous phases in ratio of 0.5-51, then shaking for 5-60min, centrifuging, separating, and removing the water phase to obtain a rubidium ion enriched organic phase. The method can effectively improve the extraction rate of rubidium ions without adjusting the extraction water phase to be strong alkaline, so that the pretreatment process of extracting rubidium byan extraction method is simplified, the corrosion to equipment is reduced, and meanwhile, the generated magnesium hydroxide precipitate is reduced, and the extraction efficiency of rubidium ions is improved.

The invention relates to a socket, and especially relates to a pull off socket clamping device comprising a pull off socket (2), clamping sheets (3), and supports (5) in a shape of a Chinese character ji; the pull off socket (2) is clamped between the two clamping sheets (3); two ends of the clamping sheet (3) are respectively fixed on one end of the two supports (5) in a shape of a Chinese character ji; the clamping device is safe and reliable, easy to maintain, and has excellent structure rigidity; the support has a damping function, so the pull off socket can be reliably fixed; when a plug is pulled off, a socket arc groove has even bearing force, so a lead cannot be pulled to split, and no pull off angle deviation can be formed; in addition, the fixed device can be mounted in a plane, the whole device is installed in a cabin, thus greatly reducing corrosion level of the fixed device, and improving the fixation reliability.

The no-lead soft brazing alloy has low Cu corrosion, high wettability and excellent mechanical performance. There are four types of no-lead soft brazing alloy, the first one consists of Cu 1.0.4-0.9 wt%, In 0.005-0.095 wt%, P 0.001-0.15 wt%, and Sn for the rest; the second one consists of Cu 2.0.4-0.9 wt%, In 0.005-0.095 wt%, P 0.001-0.15 wt%, Ni 0.01- 0.2 wt%, and Sn for the rest; the third one consists of Cu 3.0.4-0.9 wt%, In 0.005-0.095 wt%, P 0.001- 0.15 wt%, RE 0.002-0.2 wt%, and Sn for the rest; and the fourth one consists of Cu 4.0.4-0.9 wt%, In 0.005-0.095 wt%, P 0.001-0.15 wt%, Ni 0.01-0.2 wt%, RE 0.002-0.2 wt%, and Sn for the rest. The present invention is suitable for no-lead assembling and packaging in electronic industry.

The invention provides stripping liquid for aluminum alloy and a stripping method of the stripping liquid. The stripping liquid comprises sodium hydroxide, sodium metaaluminate, triethanolamine, ammonium chloride, sodium thiosulfate, sodium bicarbonate, ammonium sulfate, ammonium molybdate and copper sulfate, the content of the sodium hydroxide is 50g / L-75g / L, the content of the sodium metaaluminate is 5g / L-20g / L, the content of the triethanolamine is 30 ml / L-45 ml / L, the content of the ammonium chloride is 15 g / L-30 g / L, the content of the sodium thiosulfate is 15 g / L-30 g / L, the content of the sodium bicarbonate is 10 g / L-25 g / L, the content of the ammonium sulfate is 5 g / L-15 g / L, and the content of the ammonium molybdate is 3 g / L-10 g / L. The formula of the stripping liquid is adjusted, the triethanolamine, the sodium thiosulfate, the ammonium sulfate, the ammonium molybdate and the copper sulfate are added in the new formula and are used as active negative ions and inhibitors, reaction rate is controlled, the corroded degree of aluminum is reduced, and the quality of reworked products and rework utilization rate are improved.