12 results about "Lead alloy" patented technology

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.

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 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.

This invention discloses a method for improving the electrochemical performance of lead alloy anodes using rare earth elements. The method includes first melting a rare earth alloy in a vacuum furnace, adding lanthanum (La), cerium (Ce), and neodymium (Nd) while using electromagnetic stirring, controlling the temperature at 850℃~1030℃ for 0.5-1 h. Next, the rare earth alloy concentration is diluted ≤10 times, and dispersants and antioxidants are added. Mechanical stirring combined with electromagnetic stirring is used to ensure uniform elemental composition, controlling the temperature at 500℃~550℃ for 0.5 h to prepare a rare earth master alloy. Then, 5% of the rare earth master alloy, 1% of a lead-calcium alloy, and 1% of a lead-strontium alloy are sequentially added to the molten lead, along with an antioxidant. Mechanical stirring combined with electromagnetic stirring is used to ensure uniform microstructure and composition, controlling the temperature at 450℃~500℃ for 0.5 h to finally obtain a rare earth lead alloy. This method can be applied to the production of anode plates for zinc electrowinning.

Accumulator cell for a lead-acid battery, comprising a cell housing and a cell cover that seals the cell housing in a fluid-tight manner, wherein positive and negative electrode plates and an electrolyte surrounding the electrode plates are arranged alternately within the cell housing, wherein the positive and negative electrode plates are each electrically connected to at least one common pole by means of respective pole bridges, characterized in that the positive pole, which is connected to the positive electrode plates via the associated pole bridge, is made of a lead alloy in the form of hard lead.

The application discloses a lead-acid battery composite structure busbar and a manufacturing method thereof. The manufacturing method comprises the following steps of S1, cutting an aluminum material into a net structure as a reinforcing body; S2, removing an oxide layer by using a fluorine aluminite flux for aluminum brazing to smear on the surface of the reinforcing body to remove the surface oxide layer; S3, placing the reinforcing body in a busbar cavity before cast welding; S4, pouring molten lead or lead alloy into the busbar cavity; S5, inserting a plate lug into the cavity before the lead liquid is completely solidified to press the reinforcing body and prevent the reinforcing body from floating up; and S6, cooling and forming. After the lead liquid is solidified, the reinforcing body is completely covered in the busbar to form a composite structure, and the lead liquid, the reinforcing body and the plate lug form an integral whole. The application solves the problems of high cost, low strength and large resistance of the existing busbar. The application can reduce the lead consumption and the cost, and the reinforcing body can enhance the overall structure after being embedded in the busbar to reduce the resistance.

The application relates to the technical field of welding equipment, and discloses a lead alloy anode plate laser-double-tungsten-electrode TIG composite welding device which comprises a frame, a work station plate and an anode plate. The work station plate is installed on the frame, the work station plate is provided with an installation work station, and the anode plate is arranged on the installation work station. A welding mechanism is used for double-face stability welding of the anode plate. The lead alloy anode plate laser-double-tungsten-electrode TIG composite welding device can realize butt clamping of the anode plate and the anode sheet and double-face synchronous welding of the upper and lower positions at the same time through the welding mechanism, so that the situation that the anode plate is warped due to thermal deformation caused by single-face welding during welding can be effectively solved. The clamping mechanism is used for tensioning, and the front and back laser welding of the double faces is used for cooperation, so that the welding effect of the anode plate during the welding process can be guaranteed, the anode plate welding quality is improved, and the anode plate welding efficiency is effectively improved.

This invention discloses a method for recovering lead from waste ash dishes, belonging to the field of resource utilization. The method includes: (1) pretreatment and reduction smelting: the waste ash dishes are crushed and mixed with reducing agent and flux for high-temperature reduction smelting to obtain crude lead alloy and slag; (2) vacuum distillation separation: the crude lead alloy is heated under vacuum to volatilize and condense the lead to obtain metallic lead, and the residue is a precious metal enrichment. This invention adopts a combination process of "reduction smelting enrichment + vacuum distillation separation", which uses physical gas phase separation to replace traditional chemical oxidation separation, avoiding lead oxidation loss and lead-containing flue gas generation. It has the advantages of short process, high recovery rate and environmental friendliness, and is applicable to various sources such as waste ash dishes for fire assay analysis or waste ash dishes for precious lead ash blowing refining.

This invention discloses a breaching projectile based on a plastic-based skeleton and a mixture of gradient metal powder and paraffin wax, and its preparation method, belonging to the field of anti-theft device breaching technology. The method includes: preparing a hollow plastic-based skeleton; melting solid paraffin wax into a liquid, then stirring it evenly with tungsten alloy powder to obtain a first mixture; melting solid paraffin wax into a liquid, then stirring it evenly with lead alloy powder to obtain a second mixture; melting solid paraffin wax into a liquid, then stirring it evenly with iron alloy powder to obtain a third mixture; placing the hollow plastic-based skeleton into a breaching projectile mold, then pouring in the first mixture and solidifying it to obtain a first layer; pouring the second mixture onto the first layer and solidifying it to obtain a second layer; pouring the third mixture onto the second layer and solidifying it to obtain a third layer; and finally, solidifying a top cover on the third layer. The breaching projectile of this invention can efficiently breach anti-theft wooden doors while ensuring the safety of the surrounding environment and personnel.

The application relates to the technical field of alloy materials, in particular to a preparation method of a lithium-lead alloy Li 17 Pb 83 for nuclear industry. The preparation method comprises the following steps: preparing metal lead and granular metal lithium, the average particle size of the granular metal lithium is 3-10 mm; the metal lead is placed in an oxide crucible of a vacuum induction furnace, and the granular metal lithium is placed in a secondary feeding hopper; after vacuum treatment of the vacuum induction furnace, inert gas is filled; the metal lead is heated and melted, then the granular metal lithium is added into the lead melt at a rate of 5-15 g / min; and then smelting is carried out at 285-335 DEG C for 10-30 min, and then casting is formed. Through the above process, the lithium-lead alloy Li 17 Pb 83 prepared by the application has uniform components, and secondary smelting is not needed, and the alloy ingot has good melting point and component consistency.

A method for preparing high-strength copper-lead alloy by laser-assisted cold spraying, comprising the following steps: providing alloy powder; providing a substrate; providing a protective gas environment; providing a cold spraying device, which comprises a spray gun having a discharge port; providing a heating device arranged on the discharge port of the spray gun to regulate the temperature of the discharge port, which should be appropriate for plasticizing the alloy powder; adjusting the moving speed of the spray gun; providing a laser cladding device; adjusting the laser heating area so that the laser direct position is adjusted to be the same as the spraying position; turning on the switch of the cold spraying device, and cladding the deposited alloy layer by the laser cladding device to form an alloy layer on the substrate. The preparation method not only can realize mechanical interlocking, but also can make metallurgical bonding between particles, thereby improving the bonding strength between the alloy powder and the substrate.

The invention relates to a pasting paper for producing a plate-like battery electrode (2, 3) of a lead-acid battery (1), wherein the battery electrode (2, 3) to be produced has an electrode grid (4) made of lead or a lead alloy and also has a paste material applied at least partially or in some regions to faces of the electrode grid (4). The pasting paper is designed so that, after the electrode grid (4) has been pasted, it covers the pasted surface of the electrode grid (4) preferably completely, or at least partially or in some regions. According to the invention, it is provided in particular that the pasting paper has at least one IR absorber additive which is designed to prevent, or at least substantially prevent, reflection of NIR, IR and / or FIR wavelengths, in particular during a maturing and drying process of the battery electrode (2, 3) to be produced.