96results about How to "Change the organizational structure" patented technology

A method for preparing the Ti-alloy tube from A (2.5-3.5 wt.%), V (2.0-3.0) and Ti (rest) through cold machining to become tube, heat treating at 350-600 deg.C for 0.5-2 hr, annealing, fine rolling and annealing at 300-400 deg.C for 0.5-1 hr. Its advantages are high precision, and high elastic extreme strength.

The invention belongs to the technical field of materials, and particularly relates to a method for preparing a high-wear-resistance self-lubricating composite oxide film on the surface of an aluminum alloy friction part. The method comprises the following steps: preparing a composite electrolyte for anodic oxidation; sanding and degreasing the surface of an aluminum alloy, and performing alkaline etching, ash removal and chemical polishing pretreatment; performing composite anodic oxidation treatment to prepare an oxide film, and detecting the hardness; and if the sample does not reach the required hardness, performing heat treatment on the composite oxide film. According to the invention, an oxidization liquid system composed of three acids is designed; the oxide film having high growth speed, high hardness, high wear resistance and high strength and toughness can be grown based on characteristics of pulse current oxidization; and the composite oxide film has higher wear resistance and favorable self-lubricating property through the heat treatment on the oxide film, thereby being applicable to the preparation of oil-free or oil-less lubricating friction parts under different friction conditions (high-speed light load or low-speed heavy load) in the industries of sewing, food, textile, automobiles and the like.

The invention relates to the technical field of lasers, in particular to a rare earth ion-doped PTR (Photo-Thermo-Refractive) laser glass ceramic and a preparation method thereof, for achieving function extension of PTR glass. The laser glass ceramic is prepared by adding rare earth oxides into the PTR glass, main components of the rare earth oxides are SiO2, Na2O, Al2O3, ZnO, La2O3, NaF, KBr, andthe like. The preparation method comprises: dosing and mixing, high temperature melting, stirring and clarifying, homogenizing, casting and molding; annealing of molded glass, and heat treatment after exposing by means of ultrashort pulse laser, so as to obtain a laser glass ceramic sample. The rare earth ion-doped PTR glass is exposed by adopting the ultrashort pulse laser, and structure modification can be selectively performed on the space of the glass, so as to achieve the function extension of the PTR glass; a 'two-step method' heat treatment is not required after exposing, and heat treatment is only required at a crystallization temperature, so that a preparation process is greatly simplified, and nanocrystal particles that can be directly detected can be obtained.

The invention discloses a multi-element gas co-infiltration strengthening system and a process thereof, and belongs to the technical field of workpiece heat treatment. According to the multi-element gas co-infiltration strengthening system and the process thereof, the problems of poor environmental protection, poor infiltration effect and single infiltration layer of traditional heat treatment aresolved. The multi-element gas co-infiltration strengthening system comprises a feeding unit, an air exchange unit, a heating pre-infiltration unit, a multi-element gas co-infiltration strengthening unit, a cooling protection unit and a discharge unit connected in sequence. By means of the multi-element gas co-infiltration strengthening system and a process thereof the, through the cooperation ofeach unit, a traditional acid anticorrosion process is replaced, so that the environmental protection is improved; through the air exchange unit, the air participation is avoided, so that the sufficiency of polyatomic infiltration is improved; through the combination of the heating pre-infiltration unit and microwave radiation, the structure of the surface of a lamp post is changed, so that the infiltration speed and depth of subsequent nitrogen, sulfur and chromium elements are improved; and in the strengthening treatment of multi-element gas co-infiltration, firstly, ammonia atmosphere nitriding treatment is adopted, and then gaseous carbon sulfur chromium complex is released by an accelerating infiltration ball B, so that the carburizing, sulphurizing and chromizing co-infiltration treatment is achieved, the structure of the infiltration layer is complex and diversified, and the hardness of the lamp post is improved.

The invention provides a rare earth yttrium doped molybdenum disulfide self-lubricating composite coating and a preparation method thereof. Specifically, the molybdenum disulfide self-lubricating composite coating is doped with rare earth yttrium, wherein the molar content of yttrium in the composite coating is 0.1%-5% according to the total molar content of the composite coating. According to themolybdenum disulfide self-lubricating composite coating, sublimed sulfur, yttrium chloride hexahydrate and molybdenum trioxide are adopted as raw materials, and the rare earth yttrium doped molybdenum disulfide self-lubricating composite coating is prepared through the chemical vapor deposition method. The molybdenum disulfide self-lubricating composite coating has good wear resistance and self-lubrication and excellent winding plating property. Coating deposition can be conducted on large-size complex workpieces of a complex shape.

The present invention is electrogalvanized steel plate and steel plate electrogalvanizing process. The electrogalvanized steel plate has electrogalvanized layer containing tin in 15-8000 ppm. The steel plate electrogalvanizing process includes the steps of defatting the steel plate, pickling treatment and electrogalvanizing, and features the electrogalvanizing solution containing Sn2+ in 1-500 ppm. Adding small amount of Sn2+ into the electrogalvanizing solution can alter the structure of the electrogalvanized layer and electrogalvanized layer containing tin in 15-8000 ppm has greatly raised, 2 times or higher raised, hardness.

The invention discloses a high-melting-point environment-friendly superfine solder wire applied to automatic welding and a preparation method thereof. The high-melting-point environment-friendly superfine solder wire comprises 96.1%-98.0% of tin alloy and 2.0%-3.9% of soldering flux, wherein the tin alloy is prepared from tin, silver, copper, indium, cerium, vanadium and yttrium; the melting pointof added trace element vanadium is 1890 +/-10 DEG C, the added trace element vanadium belongs to high-melting-point rare metal, the heat resistance of the tin alloy can be enhanced, meanwhile, the abrasion resistance and bursting resistance of the solder wire are extremely good, the strength, hardness and heat resistance of the tin alloy can be obviously improved through adding yttrium, the melting point of the solder wire is increased, and meanwhile, the oxidation resistance and ductility of the tin alloy are enhanced; and the added cerium can change structure of a solder, thereby refining grains, reducing solder joint bridges, changing the surface wettability of the tin alloy, and enhancing the creep property and tensile property. The solder wire is high in melting point, excellent in tensile strength, free of lead and environmentally friendly, and when the solder wire is applied to the high-end application fields of intelligent mechanical arm welding and the like, high weldabilityand lead-free environmental protection development of products are achieved.

The invention discloses a preparation technology of sturgeon protein peptide, which comprises the following steps: 1) performing cryogenic treatment on a sturgeon raw material, crushing the sturgeon raw material using a crusher, adding the sturgeon raw material into a digestion tank, adding water, performing uniform stirring, and adding acid to regulate pH to 6.5-6.8, 2) heating a material in thestep 1) to 30-40 DEG C, adding protease for enzymolysis, adding yeast powder after the enzymolysis is finished, controlling a temperature at 30-35 DEG C, performing stirring for reaction for 1-2h, collecting filtrate after filtration through a 100-mesh vibrating screen, and performing enzyme deactivation treatment, and 3) adding active carbon into liquid after enzyme deactivation for decoloration,performing centrifugal separation, ultrafiltering obtained supernate using an ultrafiltration membrane, performing desalination and concentration using a nanofiltration membrane and finally, performing vacuum freeze drying and superfine grinding to form sturgeon protein peptide powder. The preparation technology is simple; the protein peptide with molecular weight of 200-1000Da can be obtained; an extraction rate of the protein peptide is high; and the sturgeon protein peptide is high in effective content, good in color and free from a fishy smell.

The invention relates to a cranberry juice beverage and a production method thereof. The method comprises processing steps: raw material pre-treating, pulping, enzyme treating, filtering, blending, homogenizing, sterilizing, canning, checking and storing. According to the method, cranberries are taken as a main raw material; the raw material is subjected to enzymolysis so that the structure of the raw material can be changed, a relatively large quantity of nutritional ingredients can be separated out and nutrient substances in the raw material can be remained sufficiently, so that the beverage has the health-care functions such as maintaining beauty, keeping young, improving constipation, preventing senile dementia, properly reducing blood pressure and the like; at the same time, the cranberry juice beverage is unique in flavor and good in taste; the processing method is simple and easy to control.

The invention relates to a preparation technology for a gradient composite wear-resistant conical liner plate. Firstly, composite alloy powdery coating is prepared, and coated on sand mould positions corresponding to wear parts to form a composite coating. Then, metal liquid is poured to form a casting, and the casting is subjected to quenching tempering treatment. The preparation technology is simple. Wear-resistant alloy components are distributed in a gradient manner, and therefore overall mechanical properties of the conical liner plate are guaranteed, and wear resistance of the casting is significantly improved.

A nonmagnetic biomedical implant material is single phase austenite, and comprises 0.6-1.5wt% of C, 13-35wt% of Mn, 0.5-0.6wt% of Si, 0.5-2wt% of Ca, 0.5-2wt% of Zn, 0.5-2wt% of Ag, 0.016-0.020wt% of S, 0.022-0.025wt% of P, and the balance of Fe. A preparation method of the nonmagnetic biomedical implant material comprises the following steps: carrying out three-pass liquid nitrogen cold rolling on the above single phase austenite steel with the press amounts of 10-20%, 8-15% and 2-5% respectively; and carrying out two-stage annealing treatment: heating at a rate of 5-40DEG C/min to 200-300DEG C, carrying out heat insulation for 60-180min, cooling in a furnace, heating at a rate of 30-40DEG C/min to 600-800DEG C, carrying out heat insulation for 20-40min, and cooling in the furnace to prepare the nonmagnetic biomedical implant material. The nonmagnetic biomedical implant material has the advantages of short production period, low cost, and obviously improved integral degradation rate.

The invention provides a graphene doped metallic oxide electrode material and a preparation method thereof, and relates to the technical field of electrochemical materials. According to the graphene doped metallic oxide electrode material, graphene is firstly prepared through an electrolysis method, then the graphene is mixed with a mixed salt solution of Ru, Sn and Co, and the mixture is calcinedat the temperature of 220 to 300 DEG C after drying, so that the graphene and metallic oxide composite electrode material is obtained. According to the graphene doped metallic oxide electrode material, metallic oxide and graphene are introduced for compounding, so that metal nanoparticles are embedded into adjacent graphene sheets, a double electric layer electrode material and a faradaic pseudocapacitance electrode material are reasonably compounded, and the material is good in electrical conductivity and chemical stability and has ideal specific capacitance.

The invention discloses a making technique of beef tripe, comprising the steps of S1, removing hair; S2, boiling; S3, soaking for the first time; S4, cutting; S5 soaking again; S6, packaging the beeftripe processed in the step S5, wherein purified water accounts for 30-40% of total mass of package; S7, disinfecting the beef tripe packaged in the step S6 under the pressure of 500-600 Pa for 8 min.The beef tripe made by means of the making technique has the advantages of rarity of hardening in long-term boiling, low shrinkage, good crispiness with zero formation of bits, and long preservationtime.

The invention relates to a processing method for recombining dried shrimp, mainly using shrimp (or little white shrimp) as raw material, comprising the following steps: 1) preprocessing the material of shrimp (or little white shrimp) and bean; 2) mixing the shrimp meat paste and bean paste together and uniformly stirring; 3) feeding the mixed meat paste into mould and pressing out to form shrimp meat; 4) roasting the shrimp meat when the water content is equal to or less than 10%; 5) packaging. The invention uses low-salt and compound flavoring agent based on the preserving method of traditional marine product, so that the dried shrimp is loose and deliciouse. The processing method uses new type packaging technique to prevent the product from oxidatively deteriorated. The products are nutrient and health and easily stored.

The invention discloses a machining forming manufacturing method for a glass tin bath made of 5Cr2NiMnVSi magnesium alloy and belongs to the technical field of machinery manufacturing. The machining forming manufacturing method for the glass tin bath is achieved through the following processes of blank casting, de-stressing, machining, quenching and high-temperature tempering, polishing and anticorrosion rust-proof treatment. According to the glass tin bath prepared through the manufacturing method, machining is easy, the structure is more reasonable, and the corrosion resistance and the oxidation resistance are improved greatly; the mechanical property is good, the service life is longer, the sealing performance is good, and the service life of the glass tin bath is further prolonged; the glass tin bath is suitable for high-speed and low-speed textile machinery, stable in work and high in reliability.

The invention provides a material and manufacturing method used for manufacturing an LCD backlight source illuminant, in particular to the material to manufacture the LCD backlight source illuminant, which is made from metal molybdenum piece with a thickness ranging from 0.1 millimeters to 0.5 millimeters. The material manufacturing method is carried out according to the following steps: a Mo slab; hot rolling thinning; 90 degrees direction changing hot rolling thinning; surface treatment; cold rolling thinning; a first anneal; 90 degrees direction changing cold rolling thinning; a second anneal; cold rolling ranging from 0.1 millimeters to 0.5 millimeters; last anneal. The invention improves the pressing performance of the molybdenum piece to strike out 1 millimeter in diameter and 6 millimeters in depth cup shape body without anneal in the process, the yield ratio reaches more than 90 percent.

The invention discloses a lost foam casting method which specifically includes the following steps: step 1: making a lost foam pattern; step 2: drying the prepared lost foam pattern; step 3: carrying out pattern repairing and model forming on the dried lost foam pattern to form a cluster model; step 4: coating the cluster model formed in the step 3; step 5: drying the cluster model coated in step 4; step 6: casting the cluster model obtained in step 5 to form an initial casting; step 7: polishing and painting the initial casting to form a final casting. According to the lost foam casting method provided by the invention, when the displacement between the liquid metal and the EPS cluster model is completed, a plastic film on the surface of a sand box is removed, and vacuum extraction is continued, so that the sand box does not collapse; the process is equivalent to crash handling for the casting, so that the residual stress in the casting is eliminated, and the mechanical properties of the casting are increased.

The invention belongs to the field of high-entropy alloys, and particularly relates to a crystalline beryllium-containing high-entropy alloy material and a preparation method thereof. According to thealloy material, a beryllium element is added, and thus a CoCrFeNiBe high-entropy alloy with high specific strength is developed; due to the fact that the size of a beryllium atom is small, the difference between the size of the beryllium atom and the size of other component atoms is large, and the size difference of an alloy atom is conveniently improved; in addition, the mixing enthalpies of theberyllium and the other four elements have a small minus value, the delta of the high-entropy alloy can be changed at a large extent, and the delta Hmix of the high-entropy alloy can be changed at asmall degree through the micro adjustment of the content of the beryllium element, so that the organizational structure of the high-entropy alloy is obviously changed, the alloy is prevented from falling in an amorphous alloy region or an intermetallic compound region, and the solid solution phase high-entropy alloy is obtained; and moreover, the beryllium has the performance of being light in weight and high in specific strength, so that the hardness and the lightness of the series of high-entropy alloys are greatly enhanced, the density is reduced, and the specific strength degree of the alloy is increased.

The invention relates to a lost-foam casting process which overcomes the technical bias existing in the prior art of mould shell collapsing due to the uncovered plastic cloth after finishing casting and is successfully developed. The process comprises the following steps: after the casing step of the traditional lost-foam casting process is finished, the plastic cloth is immediately uncovered, the vacuum is continued to be extracted for a plurality of minutes under the negative pressure during the casting process until the surface of the casting part is hardened and shaped, and then the casting part is taken out form the box after sufficient cooling. The invention has the advantages that the process changes the organizational structure of the casting part, enables the crystal grain to become fine, enhances the mechanical property of the casting part, and enables the chemical composition to be more qualified as well as the shelling falling of the coating layer of the casting part to be more thorough.

The invention discloses a carbon-based electrocatalyst and a preparation method thereof. The preparation method of the carbon-based electrocatalyst comprises the following steps: 1) crushing plant shells to obtain plant shell particles; 2) mixing the plant shell particles, sodium chlorite, a surfactant and water, and performing hydrothermal reaction to obtain hydrothermal activated plant shell particles; 3) mixing the hydrothermal activated plant shell particles, potassium bicarbonate, basic cupric carbonate, calcium carbonate and a solvent, performing ball milling, carbonizing in a carbon dioxide atmosphere, and soaking in an acid solution to obtain a plant shell derived carbon material; and 4) soaking the plant shell derived carbon material in a metal salt solution, and carbonizing the plant shell derived carbon material in an atmosphere containing a heteroatom dopant. The carbon-based electrocatalyst is large in specific surface area and has pore structures of different layers, anddifferent types of electrocatalytic reactions can be matched through doping of different heteroatoms.