93 results about "Lead alloy" patented technology

The utility model discloses a sample preparation tool for a lead alloy direct-reading spectrometer sample. The sample preparation tool comprises a to-be-prepared sample, a high-density alloy steel plate and an extrusion device, the high-density alloy steel plate is horizontally fixed below the working platform; a sample to be prepared is positioned under the high-density alloy steel plate; the extrusion device is used for driving the to-be-prepared sample to continuously rise until the to-be-prepared sample is extruded to the high-density alloy steel plate, so that the preparation of the sample is completed; the extrusion device comprises a large piston cylinder, a small piston cylinder and a hydraulic oil tank; the large piston cylinder and the small piston cylinder are vertically placed side by side, and a sample to be prepared is placed at the top end of a large piston of the large piston cylinder; a rodless cavity of the small piston cylinder is connected with a rodless cavity of the large piston cylinder through an oil conveying pipeline, and a second one-way valve is installed on the oil conveying pipeline. An oil outlet pipe of the hydraulic oil tank is communicated with a rodless cavity of the small piston cylinder through a first one-way valve, and an oil return pipe of the hydraulic oil tank is connected with a rodless cavity of the large piston cylinder through an oil drain valve. Small and irregular lead alloy direct-reading spectrometer samples can be conveniently prepared, and the production and research and development efficiency is improved.

The application belongs to the technical field of lead-free tin paste, and particularly relates to high-performance lead-free tin paste, a preparation method and application thereof; the high-performance lead-free tin paste comprises lead-free alloy powder, carbon nanotube composite and fluxing agent in a mass ratio of 12-15:0.5-1:84.5-87; the carbon nanotube composite comprises carbon nanotubes, carbon nanohorns, nano indium tin oxide, quaternary ammonium salt surfactant and liquid rosin; the fluxing agent comprises, in terms of mass percentage, hydrogenated rosin 30-40%, activating agent 5-10%, thixotropic agent 4-8%, stabilizer 1-5% and solvent to make up the balance to 100%; the high-performance lead-free tin paste provided by the application has low welding point cavity rate, high shear strength and good temperature cycle impact resistance.

The invention relates to a waste lead storage battery low-carbon recovery system and a recovery process thereof. The system comprises a waste battery pretreatment unit, a crushing and sorting unit and a lead smelting unit. The waste battery pretreatment unit is provided with a waste battery storage chamber, a discharge chamber, a gas collection chamber and a to-be-crushed chamber which are communicated in sequence, and is used for waste battery storage, residual electricity electrolysis hydrogen production and temporary storage; the crushing and sorting unit comprises a multi-stage crusher, a screening machine, a sorting machine and a filter press, and is used for separating to obtain a lead grid, a lead alloy block, light plastic, heavy plastic and waste lead paste. The lead smelting unit comprises a gas-liquid separation tank, a gas mixing tank and a side-blown furnace, gas generated by electrolytic hydrogen production is purified and dried and then mixed with natural gas to form mixed gas, the mixed gas serves as fuel of the side-blown furnace, and the waste lead paste is subjected to reduction smelting in the side-blown furnace to obtain lead bullion. According to the system, by-products of hydrogen production through electrolysis of waste battery residual electricity serve as smelting fuel, low-carbon environment-friendly recycling treatment of the waste lead storage battery is achieved, and the resource utilization rate is increased.

The utility model discloses an efficient stirring device for a lead alloy smelting furnace, which comprises a stirring device main body and a controller, and the controller is arranged on the right side of the smelting furnace and is in telecommunication connection with the stirring device main body; the stirring device body further comprises an adjusting platform, a stirring rod rotating device and a blade-movable stirring rod, the adjusting platform is arranged above the smelting furnace, the stirring rod rotating device is arranged below the adjusting platform, and the front end of the blade-adjustable stirring rod is connected with the tail end of the stirring rod rotating device. According to the utility model, the stirring center of the device is movable, so that the mixing efficiency is improved; the stirring angle can be adjusted, so that the mixing effect is enhanced; the stirring blades are detachable, the stirring position can be adjusted up and down, and the applicability of the device is improved; the device is high in overall stirring efficiency, short in consumed time and good in energy-saving benefit.

The utility model discloses a kind of underwater special water-resistant oil-resistant electric wire cable, including cable core, the surface of the cable core is fixedly connected with shielding layer, the surface of the shielding layer is fixedly connected with insulating filling layer.The utility model realizes underwater all-around protection by the synergistic effect of multilayer structure, wherein shielding layer insulates electromagnetic interference, ensures transmission stability;Insulating filling layer ensures electrical insulation, avoids short circuit;Lead alloy protective layer is sealed and resistant to corrosion, blocks water and corrosive substance;Buffering isolation layer absorbs impact, reduces mechanical damage;Water-blocking layer and oil-resistant layer form a barrier, prevent moisture penetration and oil erosion.Cuirass layer improves mechanical strength, stretch extrusion resistance;Wear-resistant anticorrosive coating prolongs service life;Overall structure is compact, the characteristics of each layer are complementary, with water-resistant, oil-resistant, anti-interference and other properties, suitable for various underwater special environment, practicality and reliability are strong.

The invention relates to the technical field of alloy recovery, and particularly discloses an innovative energy-saving method for waste circuit board regenerated copper and alloy product extraction, and the method comprises the following steps: S1, catalytic desoldering; s2, gradient separation: carrying out two-stage vortex separation and vibration screening on the desoldered material; s3, pulsating electrolysis is conducted, specifically, the separated copper concentrate serves as an anode, and periodic pulsating direct current is applied to a composite electrolyte; s4, membrane separation and refining: separating the electrolyte through a hollow fiber membrane module with the molecular weight cutoff of 500Da, performing electrodeposition on copper-rich liquid to obtain cathode copper, and performing pH gradient precipitation on permeate liquid to recover tin-lead alloy; and S5, precious metal recovery: carrying out microwave-assisted leaching treatment on the electrolytic residues, enriching the precious metal in the leachate through chelate resin, and repeating the step S4, so that the effects of reducing the comprehensive energy consumption of per ton of copper, and improving the purity of cathode copper and the recovery rate of tin-lead alloy are achieved.

The utility model relates to the technical field of flue gas treatment, and discloses an efficient flue gas absorption device for a lead alloy smelting furnace, which comprises a shell, an exhaust fan is arranged on the left side in the shell, and the output end and the input end of the exhaust fan are respectively and fixedly connected with a connecting pipe. According to the efficient flue gas absorption device for the lead alloy smelting furnace, the servo motor and the connecting sleeve are arranged, and the flue gas cover is arranged at the top end of the smelting furnace, so that all-directional absorption of flue gas is conveniently achieved, and the servo motor drives the driving gear to rotate through the connecting shaft; the driving gear can drive the driven gear to rotate to enable the smoke suction pipe in the driven gear to drive the smoke hood to rotate, so that the smoke hood can be conveniently rotated to open the top end of the smelting furnace, materials can be conveniently put when the smoke hood is rotated open, matching with a stirring device can be achieved, and the problem that the smoke hood is inconvenient to rotate to other places according to needs and cannot be conveniently stirred is solved. And a smoke hood is easy to shield a feeding hole to influence material feeding.

Disclosed in the present invention are a skeleton type inert lead-based rare-earth anode plate and a preparation method therefor. In the present invention, a die casting technique is used as a preparation technique. After lead metal is heated and melted, alloying elements are added to the resulting lead liquid; after alloying is completed, refining and slagging are performed, the temperature is maintained, and a copper bar is subjected to de-oiling, acid pickling, cleaning, drying and then tinning; then a metal net and the tinned copper bar are placed in a die-casting die, and the die is then closed; and a lead alloy liquid is pressed into the die by means of a high-pressure casting process, the copper bar and the metal net are coated with the lead alloy liquid, and after the lead alloy is solidified, a skeleton type lead-based rare-earth anode plate can be obtained. The anode plate prepared by the present invention has high plate surface strength, is not prone to deformation during use, has high production efficiency and long service life, and can effectively improve the production indexes of zinc electrodeposition.

The invention relates to the technical field of photovoltaic cell materials, and particularly discloses tin-lead conductive paste based on bimodal particle size distribution and a preparation method thereof, and the tin-lead conductive paste is composed of 40%-70% of T5 tin-lead alloy powder, 1%-30% of T6 tin-lead alloy powder and 5%-15% of an organic carrier. The core of the invention lies in that a tin-lead alloy system with the best comprehensive performance is preferably selected as a conductive phase, and on the basis, the defects of the existing low-temperature tin-lead paste in microstructure are fundamentally overcome by introducing a double-peak particle size distribution design; therefore, the electrode paste which is low in cost, low in process temperature, high in conductivity, strong in adhesion and low in contact resistance and is excellent in comprehensiveness is provided. Tin-lead alloy powder with bimodal particle size distribution is adopted as a conductive phase, and particularly, the tin-lead alloy powder is a compound system of T5 (15 microns to 25 microns) and T6 (5 microns to 15 microns) tin-lead alloy powder. Compared with the prior art, the method has the effects of remarkably improving the printing quality and precision, remarkably improving the conductivity and quality, optimizing the cost and improving the material stability.

The utility model discloses a lead alloy plate blank lifting device which comprises a clamping arm, a lifting chain and a kicking strap, the clamping arm further comprises a first clamping arm, a second clamping arm and a bolt pin structure, and the first clamping arm and the second clamping arm are movably connected in a crossed mode through the bolt pin structure located on the upper middle side of the first clamping arm and the upper middle side of the second clamping arm. The working length of the clamping arms can be adjusted by changing the cross position of the first clamping arm and the second clamping arm, the two ends of the lifting chain are connected to the top ends of the first clamping arm and the second clamping arm through hinges, and the front kicking strap and the rear kicking strap are installed at the front end and the rear end of a lower side support of the clamping arms in parallel. According to the lead alloy plate blank lifting device, the arm length can be adjusted, and the stability is improved.

The regenerated lead alloy pot comprises a furnace body, a lead pot is arranged in a hearth in the middle of the furnace body, the furnace body is composed of a supporting layer arranged on the outer side and a heat preservation layer arranged on the inner side, and a heat storage cavity is formed by the distance between the inner wall of the heat preservation layer and the outer wall of the lead pot arranged in the hearth. A plurality of detachable combustors which are annularly distributed at the upper part of the heat storage cavity are detachably arranged on the supporting layer; the detachable combustor comprises a compressed air sleeve, a natural gas sleeve and an oxygen sleeve which are sequentially sleeved from inside to outside. The detachable combustors are annularly distributed on the heat storage cavity of the lead pan, and the outlets of the detachable combustors are tangentially arranged along the outer wall of the lead pan, so that the periphery of the lead pan is uniformly heated, the tail ends of the detachable combustors are prevented from being directly aligned to the outer wall of the lead pan for heating, and the service life of the lead pan is prolonged.

The invention discloses an automatic die-casting machine for lead alloy pole columns, which belongs to the technical field of lead-acid storage battery production and comprises a transmission workbench, a plurality of lead alloy pole column dies are circumferentially arranged on the edge of the transmission workbench at equal intervals, the lead alloy pole column dies are movably connected with the transmission workbench, and pole column copper cores are placed in the lead alloy pole column dies. A pouring mechanism, a die-casting mechanism and an ejection mechanism are respectively arranged outside the transmission workbench, and the die-casting mechanism comprises a lead alloy pole mold positioning part and a scrap removing part which are matched with the lead alloy pole mold. According to the multi-station lead alloy pole mold, a lead alloy pole mold is driven by different stations, multiple stations work at the same time, meanwhile, one lead alloy pole mold can produce multiple products, and the production efficiency is improved; and meanwhile, a compact lead alloy pole body with a smooth outer surface is formed on the surface of the die-cast lead alloy pole, so that the casting defects are reduced, and the product quality is improved.

The utility model discloses an impurity removal device for tin stripping wastewater recovery, which relates to the technical field of tin stripping wastewater recovery and comprises a base frame, an impurity removal box is obliquely arranged at the top of the base frame from top to bottom, a liquid discharge hopper is arranged at the bottom end of the impurity removal box, and a side wall pipe is arranged at the connecting end of the impurity removal box and the liquid discharge hopper in a surrounding manner. A plurality of groups of liquid outlet holes distributed at intervals are formed in the inner wall of the side wall pipe, in the waste liquid impurity removal process, waste liquid can be pumped out of the tin liquid box in a pressurized mode through the pressure pump, the waste liquid is conveyed into the side wall pipe through the three-way pipe and the main flow hose, the waste liquid can be guided to the side wall of the liquid drainage hopper through the liquid outlet holes formed in the side wall pipe, and the waste liquid can be discharged out of the side wall of the liquid drainage hopper. By means of the device, the tin-lead alloy coating film fragments attached to the side wall of the liquid discharging hopper can be washed and cleaned, the device can wash the film fragments attached to the interior of the device while waste liquid impurity removal is conducted, the follow-up cleaning workload is greatly reduced, and the operation burden of workers is relieved.

This invention discloses a weather-resistant and fatigue-resistant offshore wind power cable structure and method, which solves the problem in the prior art where poor water-blocking performance of wind power cable structures leads to water tree formation in the conductor insulation layer due to moisture intrusion, resulting in a gradual deterioration of insulation performance. It has the beneficial effect of improving overall water-blocking performance and fatigue resistance. The specific solution is as follows: A weather-resistant and fatigue-resistant offshore wind power cable structure includes, from the inside to the outside, a conductor unit, a metal sealing sheath, a water-blocking buffer layer, an armor layer, and an outer sheath. The conductor unit is provided in at least one set, and a conductor core is provided inside the conductor unit. The conductor core is filled with water-blocking paste, and the conductor core is covered with a water-blocking tape, making the conductor core a water-blocking composite structure. The metal sealing sheath is a lead alloy sheath, which is covered on the outside of the conductor unit by an extrusion molding process to achieve radial absolute water blocking. The water-blocking buffer layer includes a radial water-blocking tape and an elastic buffer layer arranged from the inside to the outside.

The invention relates to the technical field of automatic shoe washing, in particular to an automatic shoe washing machine and method.The automatic shoe washing machine comprises a washing barrel body, an ultrasonic generation module and an inclined hanging type brushing mechanism, the washing barrel body is of a three-layer composite structure, the inner layer is a mixture of polypropylene and glass fiber, the middle layer is a lead alloy sound wave reflecting layer, and the outer layer is a stainless steel protective shell; a sound wave reflection structure is arranged on the inner wall of the inner layer; the ultrasonic generation module comprises piezoelectric ceramic vibrator arrays installed at the bottom and on the side face of the cleaning barrel body. The inclined hanging type brushing mechanism comprises a rotatable elastic support and a fixed brush set, the elastic support is transversely arranged on the cleaning barrel body, and the fixed brush set is arranged on the side wall of the cleaning barrel body. The intelligent shoe cleaning machine has the multiple technical effects of being intelligent, self-adaptive, efficient in cleaning, energy-saving, environment-friendly, capable of achieving low-damage protection on shoe materials and the like, and is suitable for automatic cleaning scenes of various shoes.

The utility model relates to the technical field of photovoltaic equipment, in particular to a high-reflectivity triangular welding strip for a photovoltaic module, which comprises a triangular conductive substrate, and aluminum layers are arranged on two light receiving reflecting surfaces and a backlight welding surface of the triangular conductive substrate; transparent protection layers are arranged on the sides, away from the light receiving reflection face, of the two aluminum layers, and a tin-lead alloy layer is arranged on the side, away from the backlight welding face, of one aluminum layer. The aluminum layers are arranged on the two light receiving reflecting surfaces and one backlight welding surface of the triangular conductive substrate, so that the reflectivity of the triangular conductive substrate is effectively improved compared with that of a tinned surface; and the transparent protective layers are arranged on the sides, far away from the light receiving and reflecting surface, of the two aluminum layers, so that the aluminum layers are effectively protected and prevented from being oxidized, and the solar cell module has high reflectivity and corrosion resistance, and can effectively reflect light to the surface of a cell, thereby improving the photoelectric conversion efficiency of the module.

The utility model discloses a lead alloy smelting device relates to lead alloy smelting equipment technical field, specifically be a kind of lead alloy smelting device, including smelting furnace, the top wall of smelting furnace is equipped with feed inlet, the upper portion of smelting furnace one side wall is equipped with discharge port;Still include base, two vertical boards, pour component, the smelting furnace is placed on base;By setting two front drive assemblies and two rear drive assemblies, respectively with first shaft rod and second shaft rod transmission connection, the accurate control to smelting furnace has been realized.In the discharging process, front drive assembly and rear drive assembly work cooperatively, can quickly and smoothly tilt smelting furnace, make lead alloy liquid flow out from discharge port, significantly improve discharging efficiency.Meanwhile, this step-by-step driving mode makes smelting furnace more stable during tilting, avoids the problem of poor discharging or lead alloy liquid splashing due to shaking, ensures the stability of discharging process.

A method of manufacturing a compound object, such as an antenna, is disclosed. The method includes creating, via additive manufacturing, a first component formed at least in part of an oxidizing metal; applying, via vapor deposition, a solderable coating to at least a portion of the first component; and soldering at least a portion of the first component to a second component by applying a solder to the solderable coating of the first component. The oxidizing metal may be a titanium alloy, such as Ti-6Al-4V. The solderable coating may include copper and / or tin-lead.

This invention relates to the field of new material preparation apparatus for lead alloys, and in particular to a new material preparation apparatus for lead alloys, comprising a base plate and a support. A long box is fixedly connected to the top of the base plate, and control structures are connected to the left and right sides of the front of the long box. A support plate is fixedly connected to the top of the control structure, realizing the exchange and preparation of new materials, improving the working efficiency of the new material preparation apparatus for lead alloys. During use, the square frame in the new material preparation apparatus for lead alloys plays a shielding and protective role, preventing sputtering damage from new materials, thus improving the safety of the new material preparation apparatus for lead alloys. The original materials and lead alloy inside the shell are crushed and fed into the heating furnace, reducing the mixing time of the original materials and lead alloy, reducing the operating cost of the new material preparation apparatus for lead alloys. The baffle can prevent lead alloy and original materials from splattering out, making it easy to control the amount added and ensuring the normal use of the new material preparation apparatus for lead alloys.

The utility model discloses a Co-60 medium-release wastewater transportation shielding structure which comprises an outer shell, a cover plate is arranged at the top of the outer shell, a supporting base is arranged at the bottom of the outer shell, an inner layer which is integrally connected is arranged in the outer shell, frames are arranged between the outer shell and the inner layer respectively, and arc-shaped modules are arranged on the inner sides of the frames. According to the utility model, through the layered shielding design of the housing and the inner layer, the dose rate is accurately controlled; the arc-shaped modules are modularly combined into a lead alloy structure, so that the maintenance cost is reduced; by means of modular splicing of the arc-shaped modules, seam treatment is optimized, and direct leakage is reduced; and the thermal expansion safety margin requirement under the filling rate of 90% is met.

The invention discloses a continuous casting and rolling process for a lanthanum-silver-lead alloy strip, and relates to the technical field of continuous casting and rolling of lead alloy strips. The method comprises the steps that firstly, electrolytic lead is added into a continuous casting machine, and the temperature is increased to 540-560 DEG C; the temperature is 560-580 DEG C after stirring is finished, adding caustic soda flakes, stirring, and fishing out lead slag; continuing to oxidize and stir, raising the temperature to 580-600 DEG C, and then fishing out the slag; the rotating speed is adjusted to 800-1000 r / min, calcium-aluminum alloy and tin ingots are added for stirring, silver-lead alloy is added for continuous stirring, lanthanum alloy is added for stirring, a sample is sampled and tested to be qualified, stirring is continued, and the temperature is reduced to 440-500 DEG C for standby application. According to the method, alloy uniformity is ensured by means of staged melting and sequential alloy adding and in combination with gradient heating and fractional slag salvaging, the lead belt mesh belt obtained through the preparation process is free of air holes and slag inclusion, the corrosion resistance is obviously better than that of a gravity casting plate grid, the cycle performance of the manufactured battery is improved by 15% or above, and the service life of the battery is prolonged. And the active material of the positive plate does not soften and fall off during the battery life cycle, so that the service life of the starting battery is effectively prolonged.

The invention relates to the technical field of lead alloy casting, in particular to a self-adaptive lead alloy flow characteristic surface slag rate reducing device which comprises a melting cavity, a buffer tank body, a height adjusting mechanism and a mold conveying assembly. A heat-resistant coating is sprayed on the inner wall of the melting cavity, and exhaust holes and one-way valves are arranged at the top A partition plate is arranged in the buffer tank body to form an independent liquid flow channel, and a bottom outlet pipeline is provided with a throttle valve; the height adjusting mechanism adjusts the distance between the buffering groove body and the mold through a cylinder; the mold conveying assembly drives the molds to be stably conveyed through a chain. Turbulence is reduced through the partition plate, flow is dynamically adjusted through the throttling valve, melt is guided to be stably filled through the guide plate, generation of oxides and impurities is effectively reduced, the problems of bubbles and entrainment are solved, and the casting quality and the production efficiency are improved.

The application provides a method for separating lead and silver, and belongs to the technical field of nonferrous metallurgy. The method is carried out by using a solid-liquid separator, the solid-liquid separator comprises a tank body and a screw rod in the tank body, the inclination angle of the tank body is 8-15 DEG, and the method comprises the following steps: flowing lead-silver alloy melt into the solid-liquid separator, and then condensing and dissolving under the action of the screw rod, discharging high-silver lead at the bottom of the tank body, removing silver-lead alloy generated at the top of the tank body after condensing and dissolving for at least 2 hours, and starting to produce low-silver lead; the interval time of adjacent two times of discharging high-silver lead is 20-30 min, starting from the time when the flowing starts; and the rotating speed of the screw rod is 3-10 r / min. The lead condensed out is transported to the high-temperature section by the screw rod to be dissolved and purified, so that low-silver lead is obtained; and the melt flows back to the low-temperature section by gravity to increase the purity of condensed silver, so that high-silver lead is obtained.

The utility model discloses a lead thread lead head for a new energy automobile. The lead thread lead head comprises a lead alloy end head and a connecting line connected with the right side of the lead alloy end head, the battery further comprises a terminal which is connected to the left side of the lead alloy end, a battery body is arranged on the left side of the terminal, connecting teeth are arranged on the right side of the battery body, a connecting shell is arranged in the middle of the connecting wire, a reset spring is installed in the connecting shell, and a supporting plate is connected to the left side of the reset spring. The lead thread wire head of the new energy automobile is provided with an effective anti-loosening reinforcing structure in the connecting and using process, so that the wire head is not prone to loosening due to shaking in the using process, poor contact or abnormal heating and other conditions are avoided, meanwhile, the lead thread wire head has an effective waterproof sealing effect in the connecting process, and the service life of the lead thread wire head is prolonged. Therefore, the device is not easy to be affected by water vapor and other foreign objects to cause short circuit and the like, the use safety of the device is prevented from being affected, and a better use effect is achieved.

The utility model relates to the technical field of pouring moulds, and discloses a pouring device capable of replacing moulds and casting a plurality of lead alloy plates once, which comprises a supporting bottom plate, a control box and supporting legs, a first side plate is assembled at the side edge position of the supporting bottom plate, and water guide pipes are distributed on the front end face and the rear end face of a pouring mould group. The air cylinder is assembled on the side edge of the first side plate, the fixing ring is assembled at the position, located on the periphery of the air cylinder, of the side edge of the first side plate, the first side plate is connected and reinforced through the reinforcing rib plate, the air cylinder can push the pressing plate to move after working, and the water guide pipes are connected to the front end face and the rear end face of the casting mold set and used for communicating cooling water. In this way, a plurality of pouring molds can be placed in the middle in the working process, the fastening pressure of the molds can be adjusted according to different materials, the water cooling capacity is achieved, and the pouring capacity of a plurality of lead alloy plates is well improved in the working process.

This invention relates to the field of metallic materials technology, specifically disclosing a lead alloy, its preparation method, and its applications. The alloy provided by this invention, by mass percentage, comprises the following chemical composition: Sb 2.5%-3.5%, Cu 0.01%-0.02%, Sn 0.04%-0.1%, As≤0.03%, Zn≤0.0015%, Bi≤0.02%, Cd≤0.003%, Ni≤0.005%, with the balance being Pb and unavoidable impurities. This invention uses copper instead of the traditional nucleating agent arsenic and specifies the content and ratio of antimony, tin, and copper. The alloy components work together to refine the grain size. Compared with existing cast-welded alloys, the lead alloy provided by this invention has lower electrical resistance, better hardness and tensile strength, and is environmentally friendly, showing promising application prospects.

The invention discloses a parallel pinhole collimator in the technical field of collimator casting, the collimator is integrally cast and formed by lead alloy, the parallel pinhole collimator further comprises a casting device of the parallel pinhole collimator, the casting device comprises a telescopic cylinder, an upper die and a lower die, a lower jacking mechanism is installed at the top of the lower die, and the lower jacking mechanism is connected with the telescopic cylinder. The top of the upper die is connected with an upper jacking mechanism, and the output end of the telescopic cylinder is connected with the upper jacking mechanism; through the arrangement of the lower jacking mechanism and the upper jacking mechanism, the collimator can be automatically ejected downwards from the interior of the upper mold and automatically ejected upwards from the interior of the lower mold during mold opening of the telescopic cylinder, effective demolding of the collimator is guaranteed, and therefore the quality of the collimator is guaranteed.

The present application relates to a kind of lead calcium alloy flux, for lead alloy plate lug casting welding process.It includes the following mass percentage of raw materials: glycolic acid: 35-40%;Ethanol: 8-12%;Surfactant: 1-2%;Hydrogenated rosin: 0.5-1%;Deionized water: 45-50%.Compared with prior art, the beneficial effects of the present application are: the acidity of the flux of the present application is moderate, can react with PbO while not corroding lead calcium alloy to cause plate lug thinning, after using the flux of the present application instead of phosphorous acid flux, the battery failure caused by plate lug break in annual external battery failure analysis is reduced from 10% to 2%;It has the advantages of low toxicity, will not cause corrosion to related metal equipment;Casting welding area is controllable;It has the advantages of low toxicity, will not cause corrosion to related metal equipment;Casting welding area is controllable;Casting welding temperature is low;Plate lug surface is clean, casting welding effect is good, without air hole, without black smoke and the like.

The application discloses a high-lead soldering paste for semiconductors and a manufacturing method thereof. The high-lead soldering paste comprises 85-90% of high-lead alloy powder and 10-15% of soldering paste according to the percentage by weight. The soldering paste comprises the following raw materials according to the percentage by weight: 40-50% of modified rosin, 2.5-5% of phthalic acid, 2.5-5% of hydroxyethyl propionic acid, 2-5% of polyethylene glycol, 1-2% of sodium dodecyl benzene sulfonate, 0.5-1.5% of 2,6-di-tert-butyl-p-cresol, 0.5-1% of benzotriazole, 10-30% of propylene glycol, 5-17% of ethylene glycol monobutyl ether and 2-5% of hydroxyethyl cellulose. The high-lead soldering paste is simple to manufacture and easy to operate, has excellent wetting performance and reliable welding performance, has low spatter rate in the welding process, has no corrosion phenomenon of post-welding residues and meets the use requirements of high-reliability application scenarios.

The invention discloses a method for analyzing trace elements in lead and a lead alloy. The method comprises the following steps: dissolving the lead and the lead alloy to obtain a sample solution; preparing a standard solution of to-be-detected elements and an internal standard element solution; enabling the internal standard element solution and the standard solution of the to-be-detected element to simultaneously enter the inductively coupled plasma emission spectrometer through the internal standard sample injection pipe and the sample injection pipe to obtain a standard curve of the to-be-detected element; enabling the internal standard element solution and the sample solution to simultaneously enter the inductively coupled plasma emission spectrometer through the internal standard sample introduction tube and the sample introduction tube to obtain the spectral intensity of the to-be-detected element in the sample solution, and determining the content of the to-be-detected element in the sample solution according to the standard curve of the to-be-detected element. According to the method, the acid is adopted to dissolve the lead and lead alloy sample, the inductively coupled plasma emission spectrometer is utilized to analyze the content of the trace elements in the lead and lead alloy, the strength of iron, chromium and nickel elements in the sample can be analyzed at the same time to obtain the content of multiple elements in the lead and lead alloy, the operation steps are simple, and the detection efficiency is high.