61results about How to "Surface integrity" patented technology

The invention discloses a method for preparing an intravascular stent upon the 3D (three-dimensional) printing technology. The method comprises the following steps: firstly establishing a 3D model of the intravascular stent in a computer; inputting data of the established model into corollary equipment of a 3D printer and setting a printing program; bonding a mixed powder material, consisting of stainless steel powder or nickel-titanium powder and stearic acid powder, with a bonder through 3D printing program control to form an intravascular stent blank; performing degreasing, vacuum sintering and cooling treatment on the blank in sequence to obtain the intravascular stent. According to the preparation method, the personalized model can be designed according to the actual requirement of a patient, and the required intravascular stent blank can be rapidly and accurately prepared; the further prepared intravascular stent has a complete surface and has no defects of deformation or cracking and the like; especially, the prepared intravascular stent has no rejection reaction in 24 days in simulated body fluid, is good in biocompatibility and completely meets the medical requirement; the cost for preparing the intravascular stent by a traditional laser cutting method is greatly reduced.

The invention belongs to the technical field of food processing, and in particular relates to a compound fish scale peptide and calcium compound chewable tablet for antioxidation and calcium supplementing and a preparation method thereof. The preparation method comprises the following steps: cleaning fish scales and stoving; pulverizing the dry fish scales; adding distilled water and alkaline protease to the pulverized fish scale powder for hydrolysis, heating for enzyme inactivation after the hydrolysis, filtering, concentrating and drying the filtrate to obtain fish scale antioxidant peptides, and collecting residue; and adding an aqueous citric acid solution to the residue, extracting, standing and filtering, recovering the resulting precipitate, and pulverizing to obtain fish scale calcium citrate. The products of the fish scale peptide and calcium compound chewable tablet of the invention is prepared by mixing fish scale antioxidant peptides, fish scale calcium citrate, whole milk powder, compressible starch, glucose, sucrose, citric acid, malic acid, food flavor, magnesium stearate, etc., crushing and sieving and tabletting forming. According to the present invention, the peptide extraction rate is 72.3-85.9% scale, and the calcium recycling rate is 67-78%. The preparation method of the invention is simple and practical, and the product of the invention has good taste and stability.

The invention discloses a method for preparing a personalized degradable metal stent or an internal fixation device based on 3D printing. The method comprises the following steps: (1) obtaining data of corresponding size parameters of a lesion in a human body through a QCA technology, and obtaining a structure of a blood vessel stent, other metal stents or the internal fixation device by three-dimensional reconstruction; (2) establishing a 3D model of a wax mold prototype of the blood vessel stent, other metal stents or the internal fixation device, and decomposing the 3D model into a series of 2D sheet models; (3) using a 3D printing technology to make the wax mold prototype; (4) leading gypsum into the wax mold prototype for shaping; after the gypsum is hardened, baking the gypsum to completely vaporize and evaporate the wax mold prototype, and then casting alloy melt; and after the casting is completed, breaking a shell to obtain the metal stent or the internal fixation device. According to the method, personalized customization can be performed according to a patient's diseased blood vessel, and the obtained metal stent or the internal fixation device is degradable, high in precision and good in mechanical properties and corrosion performance.

The invention discloses soybean peptide chewable tablets and a preparation method thereof, and belongs to the field of functional food technology. The preparation method comprises the steps of preparing a main ingredient soybean peptide powder contained in the chewable tablets and various auxiliary materials contained in the chewable tablets according to a certain proportion, mixing, then directly tabletting, carrying out sterilization and package and other process steps, and thus obtaining the product. The soybean peptide chewable tablets are simple in preparation, keep the soybean peptide nutrition and active functions, have high soybean peptide content which is more than 48%, are good in taste and mouthfeel and good in product stability, have the functions of enhancing immunity, relieving fatigue, improving athletic ability, controlling weight, dispelling alcohol effects to protect liver and the like, are convenient to carry, and are fast absorbed by bodies.

The invention discloses a nutritious chewable milk tablet added with DHA algae oil microcapsule powder and a preparation method of the nutritious chewable milk table. The nutritious chewable milk tablet is prepared from the following materials by mass percent: 50-80% of whole milk powder, 8-12% of edible glucose, 6-9% of maltitol, 4-10% of the DHA algae oil microcapsule powder, 1-2% of hawthorn powder, 1-2% of sea buckthorn powder, 0.4-1.2% of zinc gluconate, 4-6% of taurine, 0.1-0.5% of magnesium stearate, 0.2-0.4% of silicon dioxide and 0.5-0.8% of sodium carboxymethylcellulose. The nutritional chewing milk tablet prepared by the method is rich in nutrition and good in product stability, and has a better shelf life.

The invention discloses a fabricated building having a space capable of being largened and applying cement prefabricated components. The fabricated building comprises a first bottom plate; a pluralityof damping mechanisms are arranged at the lower end of the first bottom plate, and the upper end of the first bottom plate is fixedly connected with two transverse wall bodies; two longitudinal wallbodies are arranged between the two transverse wall bodies, and the two ends of the two longitudinal wall bodies are fixedly connected with limiting plates; the limiting plates are fixedly connected with the longitudinal wall bodies through limiting mechanisms, a plurality of limiting grooves are formed in the opposite side walls of the two transverse wall bodies correspondingly, and clamping grooves are formed in the opposite inner wallsof the limiting grooves correspondingly; partition plates are slidably connected into the clamping grooves, mounting cavities are formed in the first bottom plate, and telescopic mechanisms are arranged in the mounting cavities; two first device cavities are formed in the first bottom plate, and first baffles are slidably connected into the first device cavities; and the telescopic mechanisms are connected with the first baffles. The fabricated building is reasonable in structural design, the space of a residence can be changed to be largened, good safety performance is achieved, and the safety performance of the residence is improved.

The invention provides a self-heating cotton collection apparatus, comprising a cotton guiding chamber, a stainless steel mesh belt, a cotton collecting box, a negative pressure blower fan, an adhesive spraying pipe and an infrared radiation hot plate. The infrared radiation hot plate is installed in the cotton collection apparatus and comprises a thermal-isolation heat-preserving layer, a heatproof heat-preserving heating layer and a heat-conducting radiation layer, wherein the heating layer is a heating diode, and an infrared radiation paint is adhered on the heat-conducting radiation layer. The self-heating cotton collection apparatus employs infrared radiation heat transfer and utilizes the characteristics of strong penetrating force, high heating efficiency and the like of infrared rays to realize long-distance heat-curing of cotton silk; i.e., curing of the cotton silk is started before falling of the cotton silk on a stainless steel mesh, and the cotton silk and the stainless steel mesh contact in a solid phase manner after the cotton silk falls on the stainless steel mesh, thereby producing a good abhesion effect. Through curing of cotton felt in advance, the temperature of a curing furnace can be properly reduced, and time spent in a curing furnace can be effectively decreased.

The invention discloses a method for matrix strengthening and surface coating of a graphite guide cylinder for a czochralski silicon single crystal. The method comprises the following steps that (1) surface pretreatment is conducted; (2) hydrocarbon gas is adopted for chemical vapor deposition, and a matrix is strengthened; (3) silicon carbide powder, silicon powder and a solvent are mixed at a mass ratio of 1:(3-5):(6-8) and stirred uniformly; slurry is obtained; the surface of the graphite guide cylinder is uniformly coated with the slurry about 30-50 micrometers thick, and then the graphite guide cylinder is put into a curing furnace for baking treatment; (4) the graphite guide cylinder is placed in a high temperature furnace for in-situ reaction; an SiC outer layer is prepared; and (5) the graphite guide cylinder is placed in a chemical vapor deposition furnace, and the hydrocarbon gas is adopted for the chemical vapor deposition. With the method, the strength of the graphite guide cylinder can be effectively improved in a high temperature use process, and the problems that the existing graphite guide cylinder has external surface oxidization, overall cracking, chipping, and the like after short-term use can be effectively solved.

The invention discloses an assembling method for a bogie wheel disc assembly of a tracked vehicle. The assembling method is characterized by comprising the following steps: concave connecting holes are formed in a wear resistant steel ring; bolt holes which are aligned to the concave connecting holes are formed in a bogie wheel; the wear resistant steel ring is fastened and connected to the bogie wheel through fastening bolts; the concave connecting holes in the wear resistant steel ring are sealed through welding. The bogie wheel is made of aluminum alloy or magnesium alloy materials, and the wear resistant steel ring is made of 38CrSi steel. A special connection mode combining the threaded mechanical connection and the welding and fastening sealing enables the bogie wheel and the wear resistant steel ring to be firmly combined into a whole to form the bogie wheel disc assembly. Compared with the prior art, the method has the advantages that the firmness of the connection of the parts made of two kinds of materials is higher, and the falling-off is prevented; the surface is complete and free of assembling traces, and the quality is high; and the impact resistant performance of the parts manufactured according to the process is far better than that of the parts manufactured according to the conventional process, and a technical support is provided for further improving the motor performance of the tracked vehicle.

The invention discloses a preparation method of a piezoelectric film. The preparation method comprises the steps of: preparing a steady-state liquid-phase precursor, wherein composition of the steady-state liquid-phase precursor matches that of the piezoelectric film; providing a base, and preparing protrusions serving as stress relief structures on the surface of the base; sequentially preparing an isolation layer and an electrode layer on the surfaces of the base and the protrusions so as to form a substrate; and preparing the piezoelectric film by painting the steady-state liquid-phase precursor on the surface, away from the base, of the substrate and performing primary annealing. According to the preparation method disclosed by the invention, the stress caused by the too large area of the base is effectively relieved through preparing the substrate having the stress relief structures, thus the piezoelectric film with the advantages of being large in area, crack-free and good in performance is prepared. The invention further discloses the piezoelectric film prepared by adopting the preparation method.

The invention discloses a method for continuous casting production of a YQ450NQR1 Z-type steel bloom in the field of steel metallurgy. The method is mainly improved in the molten steel continuous casting stage, during continuous casting, a tubular crystallizer with the section size consistent with that of a casting blank is utilized, and special continuous casting crystallizer protective slag is used in cooperation, wherein according to physical property index requirements of the protective slag, the viscosity is 1.00-1.02 Pa, the alkalinity 0.83-0.85, the softening temperature is 1130-1136 DEG C, the hemispherical temperature is 1190-1196 DEG C, the flowing temperature is 1200-1202 DEG C, and the slag consumption in the application process is 0.55-0.62 kg of slag per ton of steel. On thebasis, the appropriate crystallizer cooling strength, continuous casting drawing speed, crystallizer electromagnetic stirring parameters and superheat degree control are also utilized so that a billetcan form a blank shell complete in surface and uniform in thickness in the crystallizer, the method particularly has a remarkable effect on controlling cast blank shell quality defects caused by peritectic transformation linear contraction, the problems of rolling and cracking caused by the cast blank shell quality defects are solved, and an important foundation is laid for controlling cracking defects of Z-type steel in the later rolling stage.

The invention provides an electromagnetic wave absorbent large in radius-thickness ratio and a preparation method thereof. The method comprises the steps that laminarization treatment is mainly conducted on magnetically soft alloy powder on the condition that a solvent medium and a specific proportion-specified and environmentally friendly lubricant exist, then, drying is conducted, and particularly after specified dewaxing process heat treatment, annealing treatment and other processes, the electromagnetic wave absorbent large in radius-thickness ratio is formed. The particle size and morphology are uniform, the surface is mellow, full and smooth, and the magnetic property is excellent.

The invention aims at providing a preparation method of a red electrophoresis liquid microcapsule. The red electrophoresis liquid microcapsule prepared by the method has the advantages of good dispersibility, uniform particle size distribution, sensitive electrical field response, quick and reversible bistable state characteristic, short electrical field response time, transparent capsule wall, good suspension stability, good color development effect, small particle size, complete shape, smooth surface, optical transparency, good mechanical strength and no adhesion among microcapsules. The method has easily controlled reaction conditions and is applicable to large-scale industrial production.

The invention discloses a preparation method of a powder net composite porous metal film, which comprises the steps of 1, uniformly mixing metal powder with a plasticizer, a thickening agent and an organic solvent or deionized water according to a certain proportion to prepare high-viscosity slurry; 2, extruding the high-viscosity slurry into a strip-shaped film blank through a slit-type die opening by using an extruding machine, conveying the strip-shaped film blank to two rolling mills through a conveying belt, and rolling the strip-shaped film blank into a strip-shaped powder net composite porous metal film blank through composite film blanks on the two sides and a composite single-layer metal wire net in the middle; and 3, laying an isolating layer on the strip-shaped powder net composite porous metal film blank through aluminum oxide powder, conducting degreasing and sintering in a hydrogen sintering furnace, and then obtaining the powder net composite porous metal film. The preparation process is simple, the cost is low, the efficiency is high, and the prepared powder net composite porous metal film is uniform in pore size distribution, small in maximum pore size, high in permeability coefficient and capable of being widely applied to the fields of flue gas dust removal, water purification and the like.

The invention aims at providing a red electrophoresis liquid, comprising permanent bordeaux F5R with the content being 2-4mg/ml, a charge control agent which is dehydrogenated tallow secondary amine with the content being 0.1-0.6mg/ml, a surface active agent span-80 or polyethylene wax with the content being 1-2mg/ml, and dispersive medium such as tetrachloroethylene or phenyl ethylene. The invention provides a method for preparing the red electrophoresis liquid. The red electrophoresis liquid microcapsule prepared by the method has good dispersivity, even granularity distribution, sensitive response on an electric field, and fast and reversible double steady-state characteristics, and the response time of the electric field is short. In addition, the red electrophoresis liquid microcapsule prepared by the method has transparent cystwall, good suspension stability and chromogenic effect, smaller grain diameter, integral shape, smooth surface, transparent optical property, good mechanical strength, and no conglutination between microcapsules. The method has easily controllable reaction conditions, which is suitable for large-scale manufacturing production.

The invention provides a lung-heat clearing glutinous rice ball containing Chinese yam, tremella, snow pear, lotus seed, lily, honey and other health care food materials. The glutinous rice ball is refreshing, neither too hard nor too soft, is free of hard core, non-sticky to teeth, fine in taste, soft and al dente, and has good elasticity, the glutinous rice ball has a smooth and complete surface, is free of fold, fine line and deformation, and has a fine texture structure. And after refrigeration or freezing, the frost crack rate is low, and the product defect rate is low. The invention alsoprovides a making method of the lung-heat clearing glutinous rice ball, the making process is simple, avoids starchy sauce boiling, blanching or other procedures, and is more suitable for enlarged production.

The invention discloses a system and a method for protecting a complete surface of an intelligent card. The system for protecting the complete surface of the intelligent card comprises a graphic code generation module, a graphic code identification module and the intelligent card, wherein the graphic code generation module is used for generating an internal identifier and a first check identifier according to chip information of the intelligent card, generating a graphic code according to the first check identifier and setting the graphic code on the surface of the intelligent card; the graphic code identification module is used for identifying the graphic code on the surface of the intelligent card and converting the graphic code into a second check identifier according to the graphic code on the surface of the intelligent card; the intelligent card obtains the internal identifier and the second check identifier from the graphic code generation module and the graphic code identification module respectively and checks the second check identifier according to the internal identifier; if the second check identifier is consistent with the internal identifier, the surface of the intelligent card is complete; and if the second check identifier is not consistent with the internal identifier, the surface of the intelligent card is not complete. According to the system and the method, the complete surface of the intelligent card can be protected, the design is simple, and the cost is reduced.

The present invention provides instant licorice snack food and belongs to the technical field of snack food. The instant licorice snack food is prepared from the following raw materials in parts by weight: 40-60 parts of licorice, 10-20 parts of cassava, 10-20 parts of poria cocos, 8-20 parts of coconut milk, 5-15 parts of honey, 0.05-0.10 part of a swelling agent and 0.1-0.5 part of an anti-caking agent. The instant licorice snack food has a unique licorice flavor, is sweet and palatable, complete in shapes, smooth on surface, light brown in color and luster, glossy, harmonious and soft in aroma, pure, and delicate in taste.

The invention provides a copper foil improvement method. The copper foil improvement method comprises the following steps: S1, selecting a copper foil raw material; s2, cutting the copper foil raw material in a dust-free environment; s3, the cut copper foil is installed on a pressing device, and cutting and pressing are conducted through a concentric-square-shaped mold; s4, in the pressing process, the constant-temperature state is maintained; and S5, cooling the laminated copper foil in a natural environment, and molding the cooled copper foil. According to the copper foil improvement method provided by the invention, the copper foil raw material is cut in a dust-free environment before being pressed, so that the surface of the cut copper foil is complete and free of air attachments, the surface of the copper foil is clean and tidy in the pressing process, and constant-temperature treatment in the pressing process can effectively improve the laminating degree of pressing and enhance the pressing quality of the copper foil; therefore, the forming quality of the laminated copper foil is improved.

The invention relates to a preparation method of a cocoa polyphenol chewable tablet, and belongs to the technical field of processing of polyphenols. Aiming at the problems that polyphenol health-care food is slowly absorbed and low in bioavailability because the drug needs a disintegration process and the drug dissolution is slow and the polyphenol health-care food is inconvenient to carry and take and cannot be taken on time in a water shortage state, the invention provides the preparation method of the cocoa polyphenol chewable tablet. Fresh cocoa fruits are used as a raw material and are shelled, baked, peeled and ground to obtain a cocoa powder; the cocoa powder is degreased and then polyphenols enriched in the cocoa are extracted, and the cocoa polyphenol extract liquid is prepared and is concentrated and dried into a powder; the powder is mixed with sucrose, lactose, mannitol and citric acid, starch pulp is added for adhesion, sieving granulation is performed by an extrusion method, magnesium stearate is added as a lubricant, tabletting forming is performed by a single charge tabletting machine, and the tablet is dried to obtain the cocoa polyphenols chewable tablet.

The invention discloses a crescent connecting assembly. The crescent connecting assembly comprises a connector, a connecting base and a locking clamp. One end of the connector is in the shape of an arc with convex grooves in two sides. The other end of the connector is a plane provided with one or more positioning convex stands. The angle-adjustable locking clamp is arranged in the middle of the connector. One end of the connecting base is in the shape of an arc with convex grooves in two sides. The other end of the connecting base is a plane provided with one or more positioning concave stands. An arc-shaped cavity which can contain the locking clamp is formed in the middle of the connecting base. The locking clamp is fixed to the middle of the connector. The head of the locking clamp is pulled to rotate by rotating an internal hexagonal hole in the tail end of the locking clamp by means of an internal hexagonal wrench, so that the connector is connected with or separated from the connecting base. The crescent connecting assembly is ingenious and novel in structural design; disassembly and assembly of a plate are achieved through the locking clamp, the surface of the assembled plate is complete, disassembly is free, no processing mark is left, and operation is easy and convenient.