18 results about "Zinc based alloy" patented technology

The invention discloses a zinc alloy stent as well as a preparation method and application thereof. The zinc alloy bracket comprises a zinc-based alloy matrix and a coating arranged on the zinc-based alloy matrix, the coating comprises a zinc layer and a poly-racemic lactic acid coating containing an active drug. According to the zinc alloy stent, the pure zinc layer and the poly-racemic lactic acid coating containing the active medicine are arranged on the zinc-based alloy matrix, so that the early-stage degradation speed of an early-stage zinc alloy implant is slowed down, the number of degradation products is controlled, stimulation of the degradation products to blood vessels is reduced, the probability of occurrence of thrombosis and restenosis in the early-stage and middle-stage is reduced, and the stent has a good application prospect. And the early mechanical property and biocompatibility of the instrument are ensured.

This invention relates to the field of metal matrix composite material preparation technology, specifically to a zinc-based alloy composite material and its preparation method, particularly applicable to the field of biodegradable biomedical implant materials. The zinc-based alloy composite material comprises a zinc alloy matrix and nano-reinforcing particles. The zinc alloy matrix is ​​composed of Zn, Cu, and Li; wherein the mass percentage of Cu in the zinc alloy matrix is ​​1-2 wt%, and the mass percentage of Li in the zinc alloy matrix is ​​0.1-0.9 wt%; the volume percentage of the nano-reinforcing particles in the zinc alloy matrix is ​​<2.5 vol%; the particle size of the nano-reinforcing particles is <100 nm, and the nano-reinforcing particles are uniformly dispersed in the zinc alloy matrix. The invention also relates to the preparation and application of the above-mentioned zinc-based alloy composite material. This invention solves the problems of unstable microstructure and difficulty in balancing strength and ductility in existing zinc-copper-lithium alloys, thus improving the mechanical properties of the zinc-copper-lithium alloy system.

A Sn-Zn based-alloy plated steel material includes: a steel material; a first alloy layer mainly composed of Fe, Cr, and Ni on a surface of the steel material; a second alloy layer mainly composed of Sn, Fe, Ni, and Zn on the first alloy layer; and a Sn-Zn-based plating layer mainly composed of Sn and Zn on the second alloy layer, in which a surface coverage of the first alloy layer on the surface of the steel material is 70% or more, the second alloy layer is an alloy layer mainly composed of at least one of a FeSn2 phase and a Fe3Zn10 phase partially substituted with Ni, the Sn-Zn-based plating layer contains, by mass%, 1.0 to 15.0% of Zn with a balance being Sn and impurities, and a total adhesion amount of the first alloy layer, the second alloy layer, and the Sn-Zn-based plating layer is 5 to 80 g / m2 per one surface.

The application relates to the field of steel smelting, in particular to a zinc-based alloy plated hot stamping forming steel and a preparation method thereof. The method comprises the following steps: smelting and continuous casting of a steel raw material to obtain a slab; thin slab continuous casting and rolling production line treatment of the slab to obtain a strip steel; pickling of the strip steel, then continuous annealing and hot dip galvanizing to obtain a zinc-based alloy plated steel coil; hot stamping forming of the plated steel coil to obtain the zinc-based alloy plated hot stamping forming steel; the zinc-based alloy plated hot stamping forming steel comprises a hot stamping forming base plate and a zinc-based alloy plating layer; the chemical components of the base plate comprise C, Si, Al, Mn, Cr, Mo, B, S, P, N, O, first additive elements, second additive elements, and the rest are Fe and inevitable inclusions; the chemical components of the plating layer comprise Al, Mg, Si, and the rest are Zn and inevitable impurities; the thin slab continuous casting and rolling production line treatment is introduced into the preparation of the hot stamping forming steel, so that the length of the whole production line process is effectively shortened.

The application discloses a preparation method of a degradable zinc alloy material, and belongs to the technical field of biological metal materials. The preparation method comprises the following steps: melting and heat-insulating zinc blocks, ZnMg50 metal blocks, Ag metal blocks and Ti metal blocks; then pouring into a casting mold and directly solidifying; and finally rolling in multiple passes. The chemical composition and content of the degradable zinc alloy material are as follows: 0.05-2wt% of Mg, 1-3wt% of Ag, 0.1-0.4% of Ti, and the balance of Zn. The application can control the types, quantities and distributions of intermetallic compounds Mg2Zn 11 , TiZn 16 phases and elemental Ag by regulating alloy components, contents and preparation methods, so that the zinc-based alloy with good mechanical properties, a suitable biodegradation rate and good antibacterial performance can be prepared and can be used for manufacturing different biological medical materials, such as vascular stents, orthopedic implants and surgical sutures.

The invention relates to the technical field of zinc casting systems for zinc hydrometallurgy, and discloses an integration method of a multipurpose zinc production line, which is characterized in that a zinc ingot production line and a zinc-based alloy production line are integrated and share one set of core zinc melting and slagging-off system, and then qualified zinc liquid is shunted to different heat preservation and casting procedures according to product requirements. Automatic equipment and centralized PLC control are adopted, and automation and collaborative operation of the whole process from feeding, melting, slagging-off to zinc scooping and casting are achieved. Zinc ingot and zinc-based alloy production lines are integrated into one zinc melting system in a one-to-two mode, on the basis that independent operation and non-interference of the two lines are guaranteed, repeated equipment investment and process points are remarkably reduced, the production line utilization rate and production flexibility are improved, and the multi-variety and small-batch market requirements are met.

This invention relates to a medical biodegradable zinc alloy, its manufacturing method, and its applications. The method involves selecting zinc-based alloy powder materials and a binder. A layer of the powder material is deposited on a substrate of a printing platform. Based on the constructed model, the binder is selectively sprayed onto the surface of the powder layer to solidify the cross-sectional pattern of the constructed model. The printing platform then descends by the thickness of one powder layer, and another layer of powder material is deposited. This process is repeated until the constructed model is printed. After printing, the entire substrate supporting the printed model is removed and placed in a vacuum oven for a certain time to enhance the curing strength of the binder. After curing, excess powder is removed to obtain a green blank. The green blank is then degreased and sintered to obtain the medical biodegradable zinc alloy. The medical biodegradable zinc alloy prepared by binder spray additive manufacturing possesses certain mechanical properties, along with an appropriate degradation rate and good biocompatibility, and is expected to be further applied in clinical orthopedic and vascular stent implantation.

The invention relates to the technical field of zinc-based alloy part production, in particular to a stripping device for zinc-based alloy part production, which comprises a die casting machine, a mechanical gripper is arranged beside the die casting machine, a conveying table is arranged beside the die casting machine, a conveying belt is wound on the conveying table, a bottom plate is arranged beside the conveying table, and the bottom plate is connected with the mechanical gripper. A first multi-section electric push rod is fixed to the bottom plate, a connecting piece is fixed to the telescopic end of the first multi-section electric push rod, a first guide rail is fixed to the connecting piece, clamping pieces are symmetrically connected to the first guide rail in a sliding mode, force storage springs are fixedly connected between the clamping pieces and the connecting piece, and a fixing piece is fixed to the conveying table. The fixing piece is connected with a first wedge-shaped block in a sliding mode, and the first wedge-shaped block is matched with the clamping piece in an extrusion mode. According to the casting stripping device, the clamping piece is arranged to clamp a casting, people can strip the needed part on the casting conveniently, the height limiting beam is arranged to block the casting on the conveying belt, and the casting is prevented from sliding down from the conveying belt.

A plated steel material comprising a metal coating layer disposed on the surface of a steel material is used. In the metal coating layer, a lower alloy layer containing 22.5% or more of Fe, an intermediate alloy layer containing 20.0% or more of Fe and 0.5-10.0% of Ni, and an upper plating layer comprising a Zn-based alloy containing 0-5.0% of Fe are disposed in this order from the steel material side, the thickness of the lower alloy layer being 5 μm or more, the thickness of the intermediate alloy layer being 1.0 μm or more, and the total thickness thereof being 6 μm or more. The lower alloy layer comprises Zn: 5.0-30.0%, Al: 30.0-55.0%, Fe: 22.5-50.0%, Si: 0-10.0%, Ni: 0% to less than 0.5%, Mg: 0-1.0%, and the balance: impurities; and the intermediate alloy layer comprises Zn: 5.0-35.0%, Al: 25.0-60.0%, Fe: 20.0-45.0%, Si: 0-10.0%, Ni: 0.5-10.0%, Mg: 0-1.0%, and the balance: impurities.

The application relates to a preparation method of a doped modified element zinc-based alloy sputtering target for semiconductor coating, and belongs to the field of metal sputtering target material preparation. The preparation method comprises the steps of material preparation, alloying smelting, centrifugal casting forming, synchronous water-cooling rapid solidification and surface machining. Through inert gas flow protection smelting, high-frequency induction heating, immersion feeding, rotating blade uniform stirring, pressure-filled centrifugal casting, synchronous water-cooling rapid solidification and surface machining, the target material with different specifications and sizes such as circular, rectangular and special-shaped can be prepared. The preparation method can solve the problem that it is difficult to dope the zinc-based sputtering target with active metal elements, obtain an alloy with a high content of doped elements, and prepare the target material with the advantages of uniform internal element distribution, small grain size, few volume defects and the like, effectively reduce the machining workload of the target material, and have the advantages of fast production efficiency, high product yield and low cost.

The invention discloses a wear-resistant zinc-based alloy bearing bush and an ultrasonic casting method thereof and belongs to the field of alloy bearing bushes. The wear-resistant zinc-based alloy bearing bush comprises the following components in percentage by weight: 28%-32% of Al, 1%-2.5% of Cu, 0.01%-0.03% of Co, 0.01%-0.03% of Er, 0.02%-0.05% of Ti, less than or equal to 0.01% of Fe and the balance of Zn, and the total content of impurities is less than 0.1%. In the smelting process, Co, Er and Ti elements are added to carry out microalloying treatment on the alloy, and the high-temperature service performance of the alloy can be remarkably improved. According to the wear-resistant zinc-based alloy bearing bush and the preparation method thereof, through specific alloy component design and combination of burdening, smelting and ultrasonic casting processes, the prepared wear-resistant zinc-based alloy bearing bush has high toughness and high wear resistance, meanwhile, the strength, hardness and high-temperature strength of the wear-resistant zinc-based alloy bearing bush are effectively improved, finally, comprehensive optimization of the comprehensive mechanical property of the bearing bush is achieved, and the use requirement in a higher-temperature environment is met.

The invention discloses a slag removal device for zinc-based alloy production, and relates to the related technical field of zinc-based alloy production, the slag removal device comprises a supporting mechanism and a slag removal hopper mounted on the supporting mechanism, and the slag removal hopper is rotatably mounted at the end part of a mounting frame in the supporting mechanism. Through the special design of the slag removal hopper and the cooperative work of the position adjusting mechanism and the driving mechanism, the slag removal hopper can quickly and accurately reach the surface of alloy liquid in the material melting furnace to carry out slag salvaging operation, and compared with a traditional manual slag salvaging mode, the slag salvaging frequency is greatly reduced, the slag removal efficiency is improved, and the production time is saved; manual slag salvaging is replaced by mechanical operation, an operator only needs to control equipment such as a motor and a lifting cylinder, heavy physical labor is not needed, the labor intensity of the operator is reduced, and the working environment is improved; due to the design of the pipe penetrating holes in the slag removal hopper, alloy liquid can flow back into the material melting furnace in the slag salvaging process, alloy waste is effectively reduced, the production cost is reduced, and the economic benefits of enterprises are improved.

The application belongs to the technical field of gas adsorbents, and specifically discloses a high-strength nanometer hybrid dissolvable bridge plug as well as a preparation method and application thereof. The high-strength nanometer hybrid dissolvable bridge plug comprises a bridge plug body, a carbon nitride film intermediate layer and a polybenzimidazole and nanometer silicon oxide composite film outermost layer. The bridge plug body comprises a hollow metal tube, and a plurality of annular grooves are formed on the outer surface of the hollow metal tube and surround the axis of the hollow metal tube. The carbon nitride film intermediate layer is located on the outer surface of the bridge plug body. The polybenzimidazole and nanometer silicon oxide composite film outermost layer is located on the outer surface of the carbon nitride film intermediate layer. The material of the hollow metal tube is a zinc-based alloy, which is composed of the following components in percentage by mass: titanium 5-7%, magnesium 2-4%, bismuth 0.5-2%, and the balance being zinc. The bridge plug has high plugging strength, controllable dissolving time, and is suitable for high-temperature high-salt or acidic environments. After dissolving, the particle size of the residue is small, which can meet the harsh requirements of ultra-deep well fracturing. Moreover, the bridge plug is prepared by using a one-step forming process, which significantly reduces the production cost.

The present application relates to a kind of zinc-based composite material and its preparation method, belong to zinc-based alloy technical field.The zinc-based composite material of the present application includes zinc-based alloy matrix and Si particle, graphite particle dispersed in zinc-based alloy matrix;Si particle, graphite particle accounts for the mass percentage of zinc-based composite material in turn is 5~7.5%, 5~8%;Zinc-based alloy matrix is mainly by with zinc, aluminium, copper, magnesium and titanium composition.The zinc-based composite material of the present application, hard silicon particle and soft graphite particle are dispersed in zinc-based alloy matrix, utilize the low expansion characteristics of silicon and graphite and the synergistic interaction strengthening and friction-reducing wear resistance effect of silicon Si particle and graphite particle to zinc-based alloy matrix, so that zinc-based composite material has excellent low expansion dimensional stability and low friction stability, anti occlusion and anti scratch resistance.

The invention relates to a method for preparing a rare earth zinc-based alloy based on a fused salt electro-deoxidation technology. The method comprises the following steps: S1, providing a solidified body taking a mixture of rare earth oxide and zinc oxide as a matrix; s2, preparing a cathode for testing and a cathode for electrolysis by utilizing the solidified body; and S3, a three-electrode system with mixed chloride fused salt of CaCl2 and NaCl as electrolyte is constructed, the cathode for testing serves as a working electrode, electrochemical behavior analysis is conducted through cyclic voltammetry testing to determine the reduction potential, then the cathode for electrolysis serves as a working electrode, preparation of the rare earth zinc-based alloy is completed through constant-potential electrolysis under the determined reduction potential, and the rare earth zinc-based alloy is obtained. Wherein the test temperature and the electrolysis temperature are respectively controlled at 500-750 DEG C. According to the method, the mixed system of the rare earth oxide and the zinc oxide is directly subjected to electrolytic reduction and alloying through an electrochemical means, complex raw material pretreatment or product post-purification steps are not needed, and operation is easy, convenient and efficient.

This invention relates to a method for preparing a zinc-based alloy, comprising the following steps: Step S1, weighing various metal powders, including zinc, copper, and X, wherein X is at least one of tin, aluminum, and titanium, by weight percentage; mixing the metal powders uniformly under vacuum or a protective gas atmosphere to obtain a mixture; Step S2, ball milling the mixture under vacuum or a protective gas atmosphere to achieve pre-alloying; Step S3, transferring the pre-alloyed mixture into the interior of a reaction vessel, evacuating the interior of the reaction vessel to maintain a vacuum level not exceeding 60 Pa, then subjecting the mixture in the reaction vessel to high-pressure sintering, and finally allowing it to cool naturally to room temperature to obtain the zinc-based alloy. This invention also relates to the application of this zinc-based alloy in zinc-based battery current collectors.

A coated checkered steel sheet including: a substrate checkered steel sheet having convex parts with a height of 3.0 mm or less and flat parts on one sheet surface; a coating layer that includes a zinc-based alloy layer that is arranged on the sheet surface of the substrate checkered steel sheet having the convex parts and the flat parts; and a chemical treatment coating film layer provided on a surface of the coating layer; in which a coating thickness of the chemical treatment coating film layer on the flat parts of the substrate checkered steel sheet is from 0.10 to 5.00 μm on one surface, and a coating thickness ratio of the chemical treatment coating film layer between the flat parts and the convex parts of the substrate checkered steel sheet (thickness of the chemical treatment coating film layer on the flat parts / thickness of the chemical treatment coating film layer on the convex parts) is from 0.2 to 5.0.

The invention relates to a method for enhancing the mechanics of a biomedical zinc-based alloy through a barb-shaped eutectic structure, and belongs to the field of biomedical material manufacturing. The barb-shaped eutectic structure reinforced biomedical zinc-based alloy is composed of zinc powder, aluminum powder (5 wt.%) and tin powder, and the mass percentage of the tin powder is 0.5-3.6 wt.%. The mixture of the zinc powder, the aluminum powder and the tin powder is subjected to mechanical mixing and ball-milling dispersion and then is sintered and formed by electric sparks. The preparation method has the beneficial effects that the barb-shaped eutectic structure is generated, a multi-angle contact surface can be formed between the barb-shaped eutectic structure and the grain boundary of each grain, and more acting points are formed on the surface of the grain boundary, so that the capability of resisting deformation of different degrees is greatly improved, and the mechanical property of the biomedical zinc-based alloy is improved.