229results about How to "Easy to press and form" patented technology

The invention discloses a cobalt-containing nickel plated steel strip serving as a lithium battery shell material and a preparation method thereof. The preparation method comprises the following procedures of: (1) pretreating a base material; (2) continuously electrodepositing a nickel-cobalt alloy plating layer on the pre-treated base material; (3) carrying out diffusion annealing treatment on the nickel-cobalt alloy plating layer under a protective atmosphere like high-purity nitrogen; (4) plating a nickel-cobalt alloy plating layer on the metal subjected to the diffusion annealing treatment again; and (5) rolling the plated nickel-cobalt alloy plating layer in a cold manner. The cobalt containing nickel plated steel strip disclosed by the invention is prepared by a special process of tightly combining the nickel-cobalt alloy plating layer and a low-carbon steel strip and then electroplating the nickel-cobalt alloy plating layer and the low-carbon steel strip, shows better corrosion resistance and can be used for shell materials of primary batteries, secondary batteries and lithium ion power cells such as 18650, 26650 and the like.

The invention relates to a preparing method for ball-like metal magnetically soft alloy powder, and belongs to the technical field of powder preparing. The method comprises the steps that raw materials of a metal magnetically soft alloy are weighed and mixed according to the weight ratio, intermediate-frequency induction smelting is adopted, and the molten alloy is prepared into an alloy casting strip through a thin-strip continuous casting technology; the alloy casting strip is placed into a crushing device, and the alloy casting strip is crushed into particle powder under the inert gas shielding condition; the crushed powder is placed into a shaping treatment device to be shaped, ball-like powder with the regular shape is obtained, the powder is subjected to annealing heat treatment, and fine powder is prepared through screening and collecting. According to the method, the uniformity of alloy powder components can be obviously improved, meanwhile, the powder wrapping insulating and pressing forming are facilitated through the prepared ball-like single-crystal particle powder, the uniformity degree of a soft magnetism powder core pressing insulating layer and the mechanical strength obtained after pressing forming can be obviously improved, the probability of damage of the insulating layer in the powder pressing forming process is greatly reduced, and accordingly the application field of the soft magnetism powder core is greatly enlarged.

The invention relates to a high-strength hot rolled steel plate for counter enameling and a manufacturing method thereof. The high-strength hot rolled steel plate for counter enameling comprises the following smelting components in weight percent: 0.012-0.03 percent of carbon (C), not greater than 0.10 percent of silicon (Si), 0.55-1.0 percent of manganese (Mn), 0.05-0.11 percent of phosphorus (P), not greater than 0.006 percent of sulfur (S), not greater than 0.005 percent of nitrogen (N), 0.08-0.20 percent of titanium (Ti), 0.005-0.055 percent of aluminum sulfide (Als), 5-15 percent of Ti/C and the balance of ferrum and inevitable impurities, wherein more than one or two of vanadium, boron (B), copper (Cu) and chromium (Cr) is selectively added. The manufacturing method comprises the following steps: producing a plate blank through continuous casting; evenly heating the plate blank to 1180-1260 DEG C; then, removing phosphorous with high-pressure water and carrying out rough rolling to prepare an intermediate blank; carrying out 5-7-pass finish rolling to target thickness; carrying out laminar flow cooling to 570-680 DEG C and coiling. The high-strength hot rolled steel plate for the counter enameling has no phosphorus explosion; the yield strength is higher than 280MPa after the high-strength hot rolled steel plate for the counter enameling is enameled under the conditions that the temperature is 800-920 DEG C and the thickness is greater than 8mm. The high-strength hot rolled steel plate for the counter enameling is suitable for roll forming, bend forming and simple punch forming and is a reliable special steel plate material for a counter enameling assembly structure.

The invention discloses a heat treatment method capable of improving natural aging stability of 6000-series aluminum alloy and an aluminum alloy plate, and relates to the technical field of aluminum alloy heat treatment. The heat treatment method comprises the following steps that a 6000-series aluminum alloy plate is subjected to solid solution treatment and quenched to 40-60 DEG C, heat is preserved for 5-20 min, then the temperature is quickly increased to 100-120 DEG C, heat is preserved for 2-5 min, and then the plate is cooled to the room temperature. By means of the method, the problems that a traditional solid solution pre-aging treatment method is poor in natural aging stability and short in bake hardening performance maintaining time are relieved. By adoption of the heat treatment method, the stability in the room temperature stagnating process can be better regulated and controlled, and thus adverse influences of natural aging are restrained; and not only can the aluminum alloy keep a good forming property for a long time, but also the paint-bake hardenability of the aluminum alloy is obviously improved, after paint baking, the strength and hardness of the obtained aluminum alloy plate are obviously improved, the yield strength is greater than 200 MPa, and the hardness is greater than 95 HB.

The invention provides a mold decoration plastic made by common injection mold. It comprises plastic base, sheet metal compounded with plastic base, and decoration flexible layer containing patterns and words compounded with sheet metal. The thickness of sheet metal is 0.1-1.2mm, the rigidity is good, and the cost is low. The invention also provides the manufacturing method. The production rate and rate of finished products are high.

The invention discloses machine-made charcoal. The machine-made charcoal is prepared from the following components in parts by weight: 40-50 parts of Chinese herbal medicine residues, 2-5 parts of a combustion improver, 35-52 parts of biomass waste and 6-10 parts of a binder, wherein the Chinese herbal medicine residues consist of 60-65 parts of wormwood, 10-15 parts of lavender platycodon grandiflorum, 4-6 parts of dried tangerine or orange peel, 2-4 parts of lotus leaves, and 10-24 parts of momordica grosvenori and a branch-leaf mixture thereof. The machine-made charcoal disclosed by the invention takes waste Chinese herbal medicine residues as raw materials, so that the waste is changed into things of value; the properties of the residual medicines are utilized, so that the machine-made charcoal not only has no irritant small, but also has fresh scent; more importantly, the machine-made charcoal has a health effect and a certain action on cough, sphagitis and bronchial asthma, and does not cause a dryness-heat feeling.

The invention belongs to the field of a metal-based soft magnetic composite material. A preparation method comprises the following steps of preparing amorphous alloy powder from an amorphous alloy thin strip; screening and compounding the amorphous alloy powder to obtain a first product; performing passivation and coupling processing on the first product to obtain a second product; mixing and stirring the second product and a ceramic precursor polymer solution to obtain composite amorphous powder; and performing formation, thermal processing and insulation layer coating on the composite amorphous powder to obtain amorphous soft magnetic composite magnetic powder. By adopting a ceramic precursor polymer as an insulation binding agent, the step of adding insulation agent powder is omitted, the problems of unstable magnetic conductivity and poor thermal stability during traditional preparation of the magnetic powder core by crashing the amorphous thin strip are solved, the production cost is reduced, and the amorphous soft magnetic composite magnetic powder can be applied to a certain electronic device with application requirements for high frequency and low loss.

The invention discloses a preparation method of a pure rhenium product. The method comprises the processes of rhenium powder pretreating, pressing and forming, dewaxing, pre-sintering, sleeve wrapping, hot isostatic pressing, wrapped sleeve removal, high-temperature sintering process and the like. According to the preparation method of the pure rhenium product, large-size pure rhenium rods, pure rhenium blocks and other products are prepared, and the advantages of being controllable in shape and size and high in density are achieved.

The invention provides a raw material mixing method for a molybdenum copper alloy for heat sinking. Raw materials of an alloy material for heat sinking comprise copper powder and molybdenum powder. The method is characterized in that the loose specific weight of the molybdenum powder is adjusted firstly, a difference value of the loose specific weight of the molybdenum powder and the loose specific weight of the copper powder is smaller than 0.5 g/cm<3>, and then according to the need of the mixing proportion, the copper powder and the molybdenum powder are mixed uniformly. According to the method, the problems that due to copper powder aggregating in the mixture of the molybdenum powder and the copper powder, in the copper infiltration and sintering process, the copper powder is fused, acopper pool with the large size is formed, and the copper distribution uniformity in the alloy material is influenced are effectively solved, the mixing uniformity of the mixture of the molybdenum andthe copper is improved, and thus the uniformity of the physical performance of the molybdenum copper alloy is improved. The invention further provides a preparation technology for the molybdenum copper alloy for heat sinking, and a product.

The invention relates to a sol-bonded sagger for sintering of a lithium battery cathode material and a preparation method thereof. According to a technical scheme, 20-25wt% of corundum particles are adopted as aggregate, 12-20wt% of corundum fine powder, 20-25wt% of cordierite, 20-25wt% of magnesia-alumina spinel, 2-10wt% of silica powder and 5-10wt% of clay are adopted as the matrix, and the aggregate and the matrix are called raw materials. The preparation method includes: carrying out ball milling on the matrix for 1-3h to obtain a premix; stirring the aggregate and a mullite sol accountingfor 2-5wt% of the raw materials uniformly to obtain premixed aggregate; and then adding the premixed aggregate into the premix, adding a mullite sol accounting for 2-5wt% of the raw materials, conducting stirring, mechanical pressing molding and drying, and carrying out heat preservation at 1300DEG C-1400DEG C for 2-4h to obtain the sol-bonded sagger for sintering of the lithium battery cathode material. The preparation method has simple in process and short production period, and the prepared product has good sintering performance, large volume density, high compressive strength, excellent thermal shock resistance and good erosion resistance.

The invention provides an aluminum alloy cartridge shell and a manufacturing method of the aluminum alloy cartridge shell. The manufacturing method of the aluminum alloy cartridge shell includes the following steps that S1, an aluminum alloy raw material is prepared, and an aluminum alloy solution is smelted; S2, an aluminum alloy cartridge shell blank is prepared; S3, forming treatment is conducted; and S4, surface treatment is conducted. According to the structural features and the use environments of the cartridge shell, alloy components are designed scientifically and reasonably, the aluminum alloy cartridge shell is manufactured after a 3D jet molding fast solidifying technology, multi-pass die stamping forming treatment and hard anodizing surface treatment, the whole set of technological process is complete, operability is high, and the purpose of replacing traditional copper and steel cartridge shells can be achieved.

The invention provides a method for preparing a radiation orientation sintered NdFeB magnetic ring, which specifically includes smelting, hydrogen crushing, jet milling, radiation orientation molding and sintering. During the powder making process, through two jet mills and two additions of lubricants, the fluidity of the powder is improved, the powder is fully oriented along the radial direction in the magnetic field, and the density of the green compact becomes uniform in the axial and radial directions , greatly improve the roundness of the magnetic ring and the uniformity of the magnetic surface, and at the same time, the method of slow heating and cooling is adopted during the sintering process to reduce the internal stress caused by uneven cooling or heating, and the cracking rate of the magnetic ring sintering is greatly reduced.

Disclosed are: a cold-rolled steel sheet which undergoes less load during cold rolling and has excellent press moldability and high strength; and a process for producing the cold-rolled steel sheet. A hot-rolled steel sheet comprising 0.10 to 0.30 mass% of C, 0.2 mass% or more of Mn, 0.01 mass% or more of Ni (wherein the sum total of Mn and Ni is 0.5 to 2.5 mass%), and 1.2 to 9.0 mass% of Cr, with the remainder being iron and unavoidable impurities, and having a tensile strength of 1000 MPa or less is washed with an acid, and is subjected to cold rolling at a total rolling ratio of 60% or more, thereby producing a cold-rolled steel sheet. The cold-rolled steel sheet is subjected to the final continuous annealing treatment at a homogenizing temperature of 750 DEG C or higher and a cooling rate of 3 to 100 DEG C/s. In this manner, a cold-rolled steel sheet having a tensile strength of 1280 MPa or more, a breaking elongation of 3% or more, and a thickness of 0.05 to 0.60 mm.

The invention discloses a preparation method of indium tin oxide composite powder, belonging to the technical field of preparation of indium tin oxide composite powder. The method comprises the following steps: preparation of mixed salt liquid: putting an InCl3 liquid and an SnCl4 liquid into a reaction kettle according to the In2O3:SnO2 weight ratio of 9:1, and uniformly mixing; addition of dispersing agents: adding polyvinylpyrrolidone, beta-alanine and ethanediol according to the weight ratio of 2:1:3, and adding more than 20% excessive of urea; coprecipitation reaction: gradually heating to 60-90 DEG C, keeping the temperature while continuously stirring until the In<3+> in the reaction solution is completely precipitated, carrying out ultrasonic treatment for 1 hour, continuing stirring, and aging to obtain an indium tin precipitate; and washing, drying, grinding, screening and carrying out high-temperature calcination to obtain the high-sintering-activity nano indium tin oxide composite powder. The indium tin oxide composite powder prepared by the method has the advantages of less hard aggregation and favorable flowability, and is easy for pressure molding.

The invention relates to a preparing method of an aluminum alloy composite, in particular to a preparing method of the 1xxx/5xxx aluminum alloy composite. According to the preparing method of the 1xxx/5xxx aluminum alloy composite, an aluminum alloy composite finished product is finished through steps of core layer alloy and coating layer alloy board preparing, surface treatment, welding fixing, preheating, hot rolling, cold rolling and annealing; 1xxx series aluminum alloy and 5xxx series aluminum alloy are rolled to prepare the 1xxx/5xxx aluminum alloy composite product in a composite manner, and advantage characteristics of the 1xxx series and 5xxx series aluminum alloy materials can be sufficiently combined; compared with an existing single 5xxx series aluminum alloy, the welding property of the prepared product can be obviously improved, meanwhile, good structural strength and corrosion resistance performance are achieved, punching molding is easy, and the requirement of a car wheel fender for punching molding and welding performance can be completely met.

The invention discloses a thermal treatment method for improving bake-hardening performance and natural aging stability of 6xxx-series aluminum alloy, and belongs to the technical field of aluminum alloy processing. The thermal treatment method comprises the following steps: within 20 minutes after performing solution treatment on 6xxx-series aluminum alloy plates and quenching to the room temperature, entering a furnace at 50-150 DEG C, and cooling to be lower than 40 DEG C at the cooling rate of 3-20 DEG C/h within 20 minutes after keeping the temperature. The thermal treatment method disclosed by the invention is simple in process, high in production efficiency, and capable of effectively improving the natural ageing stability and the bake-hardening performance of the 6xxx-series aluminum alloy car plates, so that the 6xxx-series aluminum alloy car plates can be applicable to automotive body aluminum alloy plates.

The invention discloses a method for manufacturing dry press permanent magnetic ferrite. The method comprises the following specific operating steps: selecting a pre-sintering material, adding multiple needed additives according to a mass ratio, and performing ball milling; storing the slurry subjected to ball milling until the slurry is dried; drying the magnetic powder, adding 0-0.6 percent of calcium stearate, 0.8-1.2 percent of an alcohol camphor solution and 0-0.4 percent of talcum powder, and dispersing the material by using a high-speed dispersion machine after the materials are uniformly mixed and stirred; tempering the magnetic powder at the temperature of 60-90 DEG C; molding in a magnetic field of 8000Oe or more, thereby obtaining a formed body with the height of 1.2-2cm; maintaining the temperature of the green body at the temperature of 350-400 DEG C for 1-3 hours, and maintaining the temperature at the temperature of 1150-1350 DEG C for 0.1-3 hours; and grinding, cleaning and detecting. The method disclosed by the invention has the beneficial effects that on one hand, technology improvement is performed, and a low-temperature tempering process is increased, so that the particle size and shape of the magnetic powder can be optimized, the degree of orientation is improved, and the magnetic performance is further improved; on the other hand, due to improvement of additives in the granulation process, compression molding is promoted, and the yield is further improved.

The invention provides a forming method for the safety valve of an aluminum alloy lithium-ion battery casing. The method utilizes punching to form in shape with high precision and working efficiency. As a safety valve (2), one part (3a) of the battery casing (1) wall (3) is punched to form a cup shaped protruding part which protrudes externally. The top of the safety valve (2) is a flat thin film (4). The circumferential part (4a) of the thin film top (4) crosses the side wall (6) of the protruding part facing the thin film top and is integrated to the battery casing (1) wall (3) as a whole unit.

The invention discloses an automobile engine nacelle curb girder front part with a reinforced energy absorbing structure. The front part comprises a body, a foreplate of an external closing plate, a front lock plate, and a support of a front crush box, which is connected on the front lock plate. The invention is characterized in that one end of the front internal crush box and one end of the front external crush box are respectively connected with the support of the front crush box; the front internal crush box and the front external crush box are oppositely locked with each other and the front internal crush box is arranged inside the front external crush box; a first half reinforced cylinder and a second half reinforced cylinder are arranged inside the front internal crush box and are oppositely connected into a cylinder; and one end of the cylinder is connected with the support of the front crush box. Adopting a unique structure with the front internal crush box inside the front external crush box guarantees the complete absorption of energy during offset collision; the partitioning is reliable and punch forming is easy, thereby guaranteeing that an automobile can be successfully repaired when colliding at low speed; and the invention completely reaches the high-star score E-NCAP and C-NCAP according to the analysis of CAE.