42results about How to "Strong hardness" patented technology

The invention provides an edge covering assembly and a preparation method thereof, a vehicle window glass assembly and a vehicle. The edge covering assembly is applied to the vehicle, the vehicle comprises vehicle window glass, the edge covering assembly comprises an edge covering piece and a decoration layer arranged on one side of the edge covering piece, the edge covering piece is used for covering the vehicle window glass, the decoration layer is used for decorating the vehicle, and the decoration layer is obtained through a polyurethane injection molding material through an injection molding process. The decorative layer obtained by the polyurethane injection molding material through the injection molding process is arranged on the edge covering piece, machining and production are facilitated, bright decorative strips in related technologies do not need to be used, the production cost is reduced, and the product attractiveness is improved. Moreover, the decoration layer has high hardness, the shrinkage problem caused by the edge covering piece can be solved, the dimensional stability of the edge covering assembly is enhanced, the problem caused by surface optical distortion of the black bright decoration strip can be effectively avoided, and the durability of the edge covering assembly can be effectively improved.

The invention relates to the technical field of sealing rings, in particular to a micro-textured super-wear-resistant sealing ring and a preparation method thereof. The sealing ring is composed of a rubber ring base body, a silicon transition layer and a silicon-doped diamond-like functional layer, a micro-texture area is arranged on the whole or part of the surface of the rubber ring base body, pits are formed in the micro-texture area, the silicon transition layer is attached to the whole or part of the surface of the rubber ring base body, and the silicon-doped diamond-like functional layer is arranged on the silicon-doped diamond-like functional layer. The silicon transition layer covers all or part of the micro-texture area, and the silicon-doped diamond-like functional layer is attached to the silicon transition layer. The sealing ring is small in friction coefficient, high in bonding strength, high in hardness, good in wear resistance and long in service life.

The invention provides a push-pull type double-layer cigarette packaging box and an opening and closing method thereof. The packaging box comprises a lower shell (1), an upper shell (2), an inner box (3), a lower-layer inner box (4), a partition plate (35), a U-shaped cutting opening (200), a cutting buckle (210) and a connecting part (5). The inner space of the packaging box is divided into an upper layer and a lower layer through the partition plate (35), and cigarettes with different tastes can be stored in the upper layer and the lower layer respectively. The packaging box can be opened and closed easily by pulling up or pushing down the upper shell (2). The connecting part (5) is matched with the U-shaped cutting opening (200) of the lower-layer inner box (4), and it is ensured that the packaging box is opened and closed stably. In the push-pull process of the upper shell (2), the cutting buckle (210) is clamped on one side of the upper portion of the hollowed-out area (100) on the lower portion of the partition plate (35), and the limiting effect is achieved. The packaging box provided by the invention meets the diversified requirements of consumers on cigarette tastes, improves the user experience, is simple in opening process and is very suitable for industrial production.

The invention provides a preparation method of a waterborne polyurethane acrylate wear-resistant anticorrosive coating, which comprises the following steps: (1) in the presence of sodium methoxide as a catalyst, diethanol amine reacts with palm oil, so that active hydroxyl groups are grafted on the surface of the palm oil, which is beneficial to the subsequent reaction of waterborne polyurethane; (2) performing reaction on isophorone diisocyanate, the modified palm oil and pentaerythritol triacrylate to obtain waterborne polyurethane acrylate; and (3) grafting isophorone diisocyanate onto the graphene, and then reacting the graphene graft with N, N-dimethylethanolamine, so that more active sites are provided for the surface of the graphene after grafting, and the dispersity and compatibility of the graphene are improved. The method is simple and convenient to operate and few in process steps; the reaction time is short and the energy consumption is low; the raw materials are cheap, easily available and environment-friendly; the prepared waterborne polyurethane acrylate coating is good in wear resistance and corrosion resistance.

The invention belongs to the technical field of powder coatings, and particularly relates to a high-wear-resistance and salt-fog-resistance epoxy powder coating and a preparation method thereof. The epoxy powder coating with high wear resistance and salt spray resistance is prepared from the following raw materials in parts by weight: 40 to 60 parts of modified epoxy resin, 15 to 30 parts of carboxyl-terminated polyester resin, 10 to 25 parts of fluorosilane modified composite filler, 10 to 25 parts of curing agent, 0.5 to 1 part of benzoin, 0 to 20 parts of pigment and 0.3 to 2 parts of other auxiliaries. The invention provides a high-wear-resistance and salt-fog-resistance epoxy powder coating and a preparation method thereof, which are used for solving the technical problems of poor hardness, weather resistance and salt fog resistance of the epoxy powder coating in the prior art.

The utility model discloses picture frame glass and a picture frame, and relates to the technical field of glass, the picture frame glass comprises a glass substrate, and an antireflection explosion-proof film is attached to one side of the glass substrate; the anti-reflection explosion-proof film comprises a film base layer, an anti-reflection layer group and a first explosion-proof layer; the anti-reflection layer group and the first explosion-proof layer are sequentially arranged on one side, far away from the glass substrate, of the film base layer; and an antireflection film is plated on one side, far away from the antireflection explosion-proof film, of the glass substrate. The picture frame comprises a frame body and picture frame glass, the picture frame glass is embedded in the inner side of the frame body, the frame body comprises a first extension section and a second extension section, the upper end of one side of the picture frame glass is attached to the inner side wall of the first extension section through sealant, and the lower end of one side of the picture frame glass is attached to the inner side wall of the second extension section through sealant. The picture frame glass and the picture frame have the effects of double-sided antireflection, weight reduction and explosion prevention.

The utility model belongs to the technical field of warning tapes, and discloses an external damage prevention reflective warning tape which comprises a warning tape body, a groove is formed in the front face of the warning tape body, an alarm is fixedly connected to the inner wall of the groove, an induction panel is fixedly connected to the top of the alarm, a connecting wire is fixedly connected to one side of the alarm, and the connecting wire is fixedly connected to the other side of the alarm. The bottom of the warning tape body is fixedly connected with a first steel plate. By arranging the warning tape body, the alarm, the sensing panel and the connecting wire, when a worker sitting on the excavator difficultly notices the reflective sign tape and continues to excavate, the sensing panel senses a signal sent by a damage acting force, and the alarm gives an alarm when receiving the signal sent by the sensing panel, so that the worker can conveniently and rapidly dig the excavator. Therefore, a worker can hear the alarm sound to warn that the cable exists in the place, the effect of preventing the warning tape body from being damaged by external force is good, and the situation that the worker sitting on the excavator digs the cable due to the fact that the worker difficultly notices the reflective sign is avoided.

The invention relates to the technical field of roller bits, in particular to an equal-wall-thickness screw motor which comprises an equal-wall-thickness stator, the inner wall of the equal-wall-thickness stator is provided with a linear structure, and equal-thickness rubber is arranged on the linear structure. The engineering plastic is used for injection molding, and after molding, the strength is high, the hardness is high, and the bearing performance is high.

The application discloses a method for synergistically inducing calcium carbonate deposition and solidification by bacillus subtilis and sphaerotilus paratus. The method comprises the following steps: 1) adding a composite bacterial solution containing bacillus subtilis and sphaerotilus paratus to treat loose particles; and 2) adding a calcification solution to post-treat the treated loose particles. The application also provides bacillus subtilis with a preservation number of CCTCC NO: M 20231896. The composite bacterial solution containing bacillus subtilis and sphaerotilus paratus synergistically promotes the induced calcification efficiency of microorganisms, and improves the cementation performance, toughness and hardness of the calcification material.

The invention relates to a titanium earphone, the liquid titanium earphone comprises a sound production part, a fixing part and a connecting part, the sound production part is arranged in the conchae of a wearer, the fixing part is attached to the back side of the ear of the wearer, the sound production part and the fixing part are connected to the two ends of the connecting part respectively, the connecting part is made of a titanium material, and the connecting part is made of a titanium material. Therefore, the overall weight of the titanium earphone is reduced, a wearer does not feel heavy when wearing the titanium earphone, and the titanium earphone is more comfortable to wear and suitable for long-time wearing.

The present invention belongs to the technical field of lithium-ion batteries, and particularly relates to a lithium-ion battery safety protection structure and a lithium-ion battery, comprising a plastic upper bracket and a plastic lower bracket, wherein the plastic upper bracket and the plastic lower bracket are spirally clamped, and an electrode packaging assembly is positioned between the plastic upper bracket and the plastic lower bracket, the plastic lower bracket is fixed to the upper end of a polymer battery cell, the electrode packaging assembly is electrically connected to the polymer battery cell, and a steel shell is sleeved on the outer sides of the plastic upper bracket, the plastic lower bracket and the polymer battery cell, and the plastic upper bracket and the plastic lower bracket play a role in protecting the electrode packaging assembly to prevent external forces from impacting the electrode packaging assembly and causing damage to the electrode packaging assembly. The steel shell is made of steel and has relatively strong hardness, and is sleeved on the outer sides of the polymer battery cell, the plastic upper bracket and the plastic lower bracket to prevent external forces from impacting the polymer battery cell and causing damage to the polymer battery cell.

The invention relates to the technical field of foamed ceramics, and discloses a foamed ceramic for carbon sequestration and a preparation method of the foamed ceramic for carbon sequestration aiming at the problem of low strength and hardness when the existing foamed ceramic is applied to a carbon sequestration technology, the foamed ceramic comprises a foamed ceramic substrate, and a carbon adsorption layer is arranged on the surface of the foamed ceramic substrate. Reinforcing fibers are arranged in the foamed ceramic substrate and the carbon adsorption layer in a penetrating mode, and a hard coating is further arranged on the surface of the carbon adsorption layer. The foamed ceramic relates to a multi-layer structure, the high-strength fibers are arranged in the foamed ceramic in a penetrating mode, and the carbon adsorption layer and the hard coating arranged on the surface of the base plate are combined, so that the adsorption and capture effect of the foamed ceramic on carbon dioxide can be remarkably improved; and relatively good firmness and stability can be kept.

This application relates to the field of circuit board manufacturing technology, and discloses a method for manufacturing SMT carrier markings and an SMT carrier. The method for manufacturing SMT carrier markings includes: providing an SMT carrier with a marking area; performing an oxidation treatment on the SMT carrier to cover its surface with an oxide layer; using a first laser to engrave the oxide layer within the marking area, making the marking area white; and using a second laser to further engrave the oxide layer within the marking area to form a marking, which is black. The above-described method for manufacturing SMT carrier markings optimizes the structure of the prepared markings, creating a strong contrast between the marking and the background color of the marking area, making them easily identifiable; furthermore, the white background color of the marking area reflects radiation and lowers the surface temperature of the carrier, making it less prone to discoloration and improving recognition speed. The markings prepared by this application have strong anti-aging properties, increased strength and hardness, and are less prone to wear.

The invention discloses a lithium battery positive plate stripping and recycling method, and belongs to the technical field of battery recycling. The recycling method comprises the following steps: shearing the waste ternary positive plate to obtain first positive plate fragments; immersing the first positive plate fragments into a solution containing a monomer and an initiator, and enabling the solution to completely permeate into the first positive plate fragments to obtain second positive plate fragments; after in-situ polymerization, carrying out mechanical crushing and sorting to respectively obtain positive electrode black powder and a positive electrode current collector; wherein the waste ternary positive plate comprises a positive current collector and a positive material layer arranged on at least one surface of the positive current collector. According to the invention, the separation of the positive electrode active material layer and the positive electrode current collector is realized through the combination of interface in-situ embrittlement and mechanical crushing, and the problem that the recovery of the positive electrode material cannot meet the requirements of high yield, high purity and low damage at the same time is solved.

The utility model relates to the technical field of deceleration strips, and discloses a combined road deceleration strip for urban road traffic engineering, which comprises a bottom plate, a spring is fixedly connected to one side of the bottom plate, a deceleration strip body is fixedly connected to one side, far away from the bottom plate, of the spring, and a buffer shell is fixedly connected to one side, far away from the spring, of the deceleration strip body. The side, away from the deceleration strip body, of the buffering shell is fixedly connected with a protection shell. The bottom plate is arranged, the upper side of the bottom plate is connected with the spring, the spring is used for buffering pressure on the upper side of the deceleration strip, then the deceleration strip is arranged on the upper side of the spring, the uppermost layer of protection shell is made of polycarbonate materials to protect vehicles from being affected by the deceleration strip when the vehicles press the deceleration strip, the hardness is high, and the deceleration strip cannot be damaged; and then through the excellent resilience characteristic of thermoplastic polyurethane, the pressure borne by the deceleration strip is buffered, the deceleration strip is further protected, the replacement frequency of the deceleration strip can be reduced through the device, and the replacement cost of the deceleration strip is reduced.

The utility model relates to the technical field of cables, in particular to a corrosion-resistant cable, which comprises a cable core, an insulating sleeve, a shielding layer and a protective layer are sequentially arranged on the outer layer of the cable core, the protective layer comprises a first protective sleeve, a second protective sleeve and a second partition, and the second protective sleeve is arranged on the outer layer of the first protective sleeve. According to the utility model, through the PVC protection layer formed by the first protection sleeve and the second protection sleeve, double protection is realized, the protection effect on the whole cable is enhanced, the corrosion of the whole cable is enhanced, and the second partition arranged at an interval enables the protection layer made of the two PVC layers to be stronger in hardness and better in protection effect, so that the service life of the cable is prolonged. And through the filled insect-proof powder, when the outer layer of the cable is damaged by insects and ants, the insect-proof powder can be used for driving the insects and ants, so that the phenomenon that the cable is corroded by insect faeces or dead bodies and the like can be reduced.

The utility model relates to the technical field of bamboo and wood buildings, in particular to an assembly type bamboo and wood house which comprises wooden columns, wooden girders, wooden beams, a herringbone wooden house frame, szechwan chinaberry fruits, bamboo house handrails, floor slabs, a roof section assembly and a wall section assembly, and the roof section assembly comprises a second wooden bar frame, an indoor decoration suspended ceiling layer, half-cut phyllostachys pubescens, a waterproof layer and a second ninth clamping plate. The wall surface section assembly comprises a first batten frame, a bamboo outer wall, a first ninth clamping plate and a bamboo curtain strip, the first batten frame is installed at the lower end of the wood girder through a mortise and tenon joint structure and wood bolts, the bamboo outer wall is installed on the first batten frame, the first ninth clamping plate is installed on the first batten frame, and the bamboo curtain strip is installed on the first ninth clamping plate; the bamboo outer wall and the first ninth clamping plate are supported by the first batten frame, the bamboo outer wall, the first ninth clamping plate, the bamboo curtain strips and the first batten frame enable the wall body to have high leakproofness, cold protection and heat preservation are facilitated, the wall body of the bamboo house has high stability, and therefore the wall body of the bamboo house is not prone to being affected by the external environment and damaged.

The invention discloses a sensor metal diaphragm surface layer coating device which comprises a supporting frame, an electroplating pool, a to-be-plated placing frame, a control cabinet, a liquid supply assembly, a nanometer bubble generator, a nanometer bubble stirring assembly, an air supply assembly, a wiring assembly, a positive electrode cylinder and a negative electrode electric clamp. And the bottom of the to-be-plated placing rack is fixedly mounted at the inner bottom of the electroplating tank. The nanometer bubbles enter the positive electrode cylinder, the electrified positive electrode cylinder, the shunting plate, the reducing cylinder and the shunting net plate release metal ions, the nanometer bubbles carry the metal ions to collide with the sensor metal diaphragm, and the metal ions are attached to the outer surface of the sensor metal diaphragm, so that the purpose of uniformly depositing a metal coating is achieved; the surface smoothness of the membrane is improved; the metal ion release and deposition efficiency is improved; the hot spot effect is avoided; the electroplating efficiency is improved;

A laser additive manufacturing process for aircraft materials. In order to improve the hardness and corrosion resistance of titanium alloy materials for aircraft, the present invention adds niobium pentoxide to the laser additive Al-BN composite coating, which can significantly improve the corrosion resistance of the material, and as the amount of niobium pentoxide increases, the corrosion resistance of the composite coating becomes stronger. However, excessive niobium pentoxide will cause the hardness of the composite coating to drop sharply, so in practice, the amount of niobium pentoxide powder needs to be strictly controlled.

The invention relates to the technical field of coal dressing, in particular to a scarce coking coal dense medium washing process for strengthening dissociation and recovery of middling coal. Comprising the steps of fine raw coal separation, fine clean coal medium drainage, fine middling coal medium drainage, fine gangue medium drainage, fine middling coal crushing, fine coal thin medium dehydration, thin medium magnetic separation, coal slime dense medium separation, coarse clean coal medium drainage, coarse middling coal medium drainage, coarse tailing magnetic separation, ore grinding operation, coarse clean coal magnetic separation, fine coal combined medium blending and coal slime mixing and blending. According to the method, the coal slime dense medium system which is completely independent of the slack coal dense medium is utilized, high-precision separation and tailing discarding operation of the coarse coal slime and the crushed slack middling coal are completed, the coarse middling coal is dissociated sufficiently and is not dissociated excessively, the separation precision of the coarse coal slime is high, the technological process is simple, separation is efficient, and economic benefits are remarkable.

An anti-locking system for a rock pipe jacking machine, the pipe jacking machine includes a tool pipe with a drill bit and a matching pipe connected to the tool pipe, the anti-locking system includes a slag plate provided on the tool pipe; the slag plate can prevent mud and / or stones from flowing along the outer wall of the tool pipe; a slag cleaning method for a rock pipe jacking machine includes tool pipe drill bit torque collection and slag cleaning with a slag plate; tool pipe drill bit torque collection, the tool pipe drives the drill bit to rotate, the torque collector collects the torque driving the drill bit in real time, when the torque drops by more than 2%, the pressurizing component is started to pressurize the nozzle or flushing pipe; slag cleaning with a slag plate, the nozzle or flushing pipe sprays water to the slag plate to make the mud and / or stones gathered outside the slag plate leave the slag plate. The advantage of the present invention is that it is particularly suitable for the construction of pipelines with a hole diameter of 80 cm to 200 cm, and can prevent mud from flowing along the tool pipe and locking the tool pipe.

The invention discloses a display module and electronic equipment, and belongs to the field of electronic equipment.The display module comprises a display layer, a cover plate, an optical hard layer and a protective layer, the cover plate, the optical hard layer and the protective layer are sequentially stacked on the surface of the display layer, the protective layer comprises a diamond-like carbon film layer, and the diamond-like carbon film layer is arranged on the surface of the display layer. The optical hard layer comprises a silicon oxide film layer and a silicon nitride film layer which are mutually stacked.

The utility model belongs to the technical field of mattresses, and particularly relates to a partitioned whole-net spring bed net which comprises a first spring area, a second spring area, a protective frame, a first spring unit and a second spring unit, the hardness of the first spring unit is smaller than that of the second spring unit, the hardness of the first spring area is smaller than that of the second spring area, and the protective frame is arranged on the protective frame. The first spring area and the second spring area are both formed by combining a plurality of first spring units and a plurality of second spring units, the first spring area comprises two groups of left sitting pressing parts and left sleeping pressing parts, and the left sleeping pressing parts are located between the two groups of left sitting pressing parts. The mattress is reasonable in structural design, can meet the requirements of two persons on the hardness of the mattress at the same time, and can adjust the hardness of the mattress according to different sleeping postures so as to meet the requirements of the persons with different sleeping postures, so that the first spring area is more suitable for the persons with lower hardness and habitual sleeping on one side; the second spring area is more suitable for people who are high in hardness and are used to sleep on the back.

The invention designs a process for replacing olivine sand with sea sand to serve as facing sand, and relates to the technical field of new materials. The sea sand is pretreated through the processes of washing, drying, screening and the like; the pretreated sea sand and water glass are stirred and mixed to obtain mortar, the mortar is added into a sand mold for compaction operation, and sea sand molding sand is obtained; molten metal is poured into the sea sand molding sand, and after pouring is completed, heat preservation treatment is conducted on a casting; after heat preservation is finished, the used sea sand is treated again through the high-temperature sand recycling technology of the sea sand, and recycled sand is obtained; the recycled sand is subjected to winnowing treatment, and sea sand subjected to regeneration treatment is obtained; carrying out secondary sand mixing on the sea sand subjected to regeneration treatment and water glass to obtain new sea sand molding sand; according to the method, the sea sand is adopted to replace olivine sand to serve as the facing sand, the prepared molding sand for secondary sand mixing is smooth in surface and has the cavity strength meeting the standard, the sea sand can more evenly fill the mold space, and cavities, bumps and air holes are prevented from being formed.

This application provides a method for manufacturing a sand-fixing mesh protection belt using salt lake brine, a construction method for a sand-fixing protection system, and a road sand-fixing protection system, relating to the field of environmental governance technology. The manufacturing method involves mixing brine and sand particles at a weight ratio of 1:5 to 1:8 to prepare a first brine slurry; using multiple sand-fixing boards with receiving holes to form a sand-fixing molding mold with a pouring space; pouring the first brine slurry into the pouring space, filling the pouring space and receiving holes; demolding to obtain the brine sand-fixing board filled with the first brine slurry; and splicing multiple brine sand-fixing boards to form a sand-fixing mesh protection belt. This sand-fixing protection system utilizes salt lake brine for sand prevention and fixation in a site-specific manner, achieving good results while being environmentally friendly and cost-effective.

The utility model discloses a roller applied to a material guiding groove of a stocker, which relates to the technical field of stockers and comprises a striker plate, an intermediate shaft, a bearing and a rim. The striker plate is arranged at the position of a material groove of the stacker, an intermediate shaft is arranged on the outer side of the striker plate and provided with a rim through a bearing, and an anti-shock rubber ring is arranged outside the rim. The device is simple in structure, reduces the probability that materials enter the rollers, is large in bearing capacity, can better bear the impact of a tripper car trough during pitching action, reduces the frequency of roller damage, and effectively guarantees the safety and stability of a tripper car trough steel structure.

The invention provides a laser cladding wear-resistant coating for the surface of a furnace roller and a preparation method of the laser cladding wear-resistant coating, and belongs to the field of coatings. The preparation method comprises the following steps: preheating a pretreated furnace roller matrix to 400-500 DEG C; on the basis of a laser gradient cladding method, a bottom coating, a middle coating and a surface coating are sequentially deposited on the surface of a furnace roller base body, slow cooling is conducted under the protective atmosphere, and a composite coating is obtained; the wear-resistant coating is obtained through strengthening treatment; the raw materials of the bottom coating comprise first cobalt-based alloy powder and a first strengthening phase; the first strengthening phase is titanium carbide TiC; the raw materials of the middle coating comprise second cobalt-based alloy powder and a second strengthening phase; the second strengthening phase is hafnium carbide HfC or tantalum carbide TaC; the surface coating comprises the following raw materials: third cobalt-based alloy powder, a third strengthening phase and an additive; the third strengthening phase comprises hafnium carbide HfC and rare earth oxide; and the additive adopts boron carbide B4C. The prepared coating breaks through the high-temperature limit of 1400 DEG C, the high-temperature hardness and wear resistance are remarkably improved, and the problem of thermal stress cracking is solved.

The invention discloses a wear-resistant floor / wallboard of a PVC resin base material, the wear-resistant floor / wallboard is composed of a plurality of floor units, each floor unit is composed of a wear-resistant layer, a printing decoration layer and a bottom layer, a connecting layer is arranged between the wear-resistant layer and the printing decoration layer, the wear-resistant layer or the printing decoration layer is coated with the connecting layer firstly, the wear-resistant layer is made of aluminum oxide wear-resistant paper, and the bottom layer is made of aluminum oxide wear-resistant paper. A middle layer is also arranged between the printing decoration layer and the bottom layer, the middle layer is one or two of a composite middle layer and a glass fiber layer, and the bottom layer is one of a composite backing material layer and an extruded hard PVC (Polyvinyl Chloride) layer. The wear-resistant layer enables the floor / wallboard to have very high wear resistance and hardness, storage space of the decorative layer does not need to be additionally increased, storage cost is saved, a back balance layer does not need to be used in a product structure, operation is convenient and fast in the actual production process, the production technological process is simplified, and production efficiency is improved. The heat balance of the product can be easily regulated and controlled through different combinations of the middle layer and the bottom layer, and the production difficulty is reduced.

The present invention relates to the technical field of multi-component copper alloy design, and specifically to a method, storage medium and device for designing the composition and process of a high-hardness and high-conductivity copper alloy. The method comprises establishing a quaternary system thermodynamic database; using Pandat software to calculate and obtain microstructure data that varies with Co content at different aging temperatures; using the open source library pymoo to find the Pareto front of the precipitate phase fraction and the solid solubility of Cu atoms; and using aging experiments to determine the target aging time. The storage medium stores computer program instructions, and the method is implemented when the computer program instructions are executed by a processor. The device comprises at least one processor, at least one memory and computer program instructions stored in the memory, and the method is implemented when the computer program instructions are executed by the processor. The present invention can efficiently realize the composition and process design of a high-hardness and high-conductivity copper alloy, and can break through the constraint relationship between the hardness and conductivity of copper alloy materials that restrict each other.

The present invention belongs to the technical field of wastewater defluorination, and specifically is a defluorination device and process for fluorine-containing wastewater, comprising a shell; the shell is composed of an upper shell and a lower shell; the upper shell and the lower shell are fixedly connected by a group of U-columns; a connecting rotating part is provided between the upper shell and the lower shell; a first ring tube is fixedly connected to the outer circular wall of the lower shell; a group of venturi tubes is fixedly connected to the top of the first ring tube, and the venturi tubes are inclined; a second ring tube is fixedly connected to the lower shell through a group of fixed columns, and the inside of the second ring tube is connected to a group of bifurcated tubes of the venturi tubes; the present invention realizes unpowered and efficient mixing of fluorine-containing wastewater and precipitant through a specific fluid guiding design, and also realizes cyclic efficient utilization of resin adsorption and improved reaction efficiency through structural design and control optimization of the defluorination equipment, thereby simplifying the fluorine-containing wastewater treatment process and equipment combination.