935results about How to "Guaranteed content" patented technology

Disclosed is a low alloy steel drug core welding wire used in the carbon dioxide arc welding. The components of the drug core and the content occupying the total weight of the welding wire(percent ratio) are as following: Ti01 3-6, Si 0.3-0.5, Mn 1.5-3.2, Si02 0.1-0.8,Zr02 0.1-0.5, Fe 2-7, Al plus Mg 0.5-1.2, Ni 0.5 -5, B 0.002-0.015, Ti 0.1-0.3; oxide or fluoride of alkali metal K, Na and Li is converted into the content of K, Na and Li, that is, 0.1-0.35; the content of fluoride F is 0.05-0.2; fluoride or oxide of rare earth metal is converted into the content of the rare earth metal, that is, 0.005-0.2; the product of the contents of C, Si and Mn in the welding wire is 0.058-0.11. The invention has good process property for the whole position welding of high strength low alloy steel, and can keep good stability of electric arc and welding operating property in the conditions of large current and fast-speed welding with smooth welding seam, high connecting intensity, good impact toughness minus 40 DEG C low temperature and good crack resistance.

The invention discloses a medlar and red date enzyme and a preparation method thereof, which belong to the technical field of enzyme preparation. Multi-strain composite fungi powder is adopted as a leavening agent; the medlar and the red date are adopted as main raw materials; dietary fiber, pectin hydrolyzate, seasoner extracting liquor, Chinese herbal medicine extracting liquor, enzyme stabilizer and other multifunctional auxiliary raw materials are scientifically compounded and modified; low-temperature processing technology such as ultrasonic cleaning, cryogenic grinding, microwave-assisted high-voltage pulse electric field processing and ultrasonic ripening are mainly adopted in the whole process, so that the natural colors, the flavor, the taste and the content of the active materials of the medlar and the red date are maintained furthest, the biological stability, the non-biological stability and the biological activity of the medlar and red date enzyme are obviously enhanced, the introduction of chemical addition agent is reduced, and the juicing rate of the medlar and the red date as well as the food safety of the enzyme are improved. Finally, the medlar and red date enzyme with high biological activity, strong stability, strong taste, flavor and appetite, long expiration date and edible safety is prepared.

The invention relates to the technical field of side slope treatment, and discloses a high and steep side slope ecological retrieved green spray-seeding base material and a preparation method and application of the base material. The spray-seeding base material comprises the following raw materials in parts by weight: 330-420 parts of planting soil, 20-30 parts of peat soil, 1.5-5 parts of organic fertilizer, 1-3 parts of grass fibers, 1-3 parts of sawdust, 0.03-0.05 part of a water-retaining agent, 0.02-0.04 part of an adhesive, 0.1-0.5 part of inorganic fertilizer, 0.5-2 parts of a pH adjustment agent, 30-44 parts of hybrid seeds and 150-200 parts of water, wherein the hybrid seeds consists of the following plant seeds in parts by weight: 10-12 parts of rhizomes tall fescue, 2-4 parts of trifolium repens, 3-5 parts of alfalfa, 2-3 parts of bermuda grass, 2.5-4 parts of indigofera pseudotinctoria, 4-6 parts of magnolia multiflora, 3-5 parts of cassia corymbosa, 2-3 parts of amorpha fruticosa and 1-2 parts of coreopsis. The base material disclosed by the invention for spray-seeding can make a soil replacement base layer with the intensity higher than 0.25MPa; after 45 days when a turf is formed, the rainwash strength is higher than or equal to 120mm/h; within half a year to a year, an ecological plant colony with shrubs which grow with the rainwash strength higher than or equal to 200mm/h and serve as main plants is formed.

The invention relates to medium carbon bearing steel and process for preparation, belonging to the technical field of bearing steel material and process technology. According to weight percentage, the range of the chemical components of the medium carbon bearing steel includes that C holds 0.50% to 1.0%, Si is 0.60% to 1.50%, Mn takes 0.50% to 1. 20%, Mo is 0.15% to 1.0%, V takes 0.15% to 1.0%, Cr and Ni are equal to or less than 0.30%, Cu is equal to or less than 0.15%, S is equal to or less than 0.025%, P is equal to or less than 0.025%, B takes 0.0005% to 0.0035%, (O) is equal to or less than 15*10-6%, (H) is equal to or less than 2*10-6%, the rest is Fe and unavoidable foreign matters. The invention also provides the process for preparing beating steel, and round steel with the size of phi 70 to 150 millimeters can be produced by the process for preparation. The bearing steel can substitute for carburizing bearing steel, such as G20CrNi2Mo and the like, to be applied, and can substitute for import bearings in the field of rolling mills and the like. The invention can reduce the manufacture cost of the bearing and the utilization cost.

The invention discloses a welding method for low carbon steel-austenite stainless steel compound pipe of ultra-thin stainless composite bed. The character is: the welding is completed with transition layer welding seam and base layer welding, it hasn't single stainless steel composite bed seam; the welding rod for low carbon steel base layer seam is the same to the one for mother metal; the first welding for stainless steel composite layer and the transition layer between the stainless composite layer and the low carbon steel base layer use argon tungsten-arc welding with back argon filling protection, or uses manual arc welding; the welding wire or welding rod use stainless steel in order to form the transition welding seam; after the transition welding seam is completed, the second time uses manual arc welding to weld the low carbon steel base layer, the welding rod uses low carbon steel in order to form base layer welding seam.

The invention discloses a processing technology of a green tea with flower fragrance. The processing technology comprises the sections of: fresh tea leaf spreading; tea leaf rocking; inactivating; rolling; drying; and finishing. The invention has the following beneficial effects: addition of technologies of tea leaf rocking and low temperature refrigeration and standing change aroma type of green tea, effectively reduce bitter and astringency taste of tea, effectively ensure degree of green of the tea, and reduce polyphenol content of the tea; on the premise of preventing the tea from turning red, time and frequency of tea leaf rocking, and time and temperature of refrigeration and standing are well controlled to prevent the leaf margin from turning red, as well as maintain quality characteristics of light soup and green leaf of the green tea, so that the rocked leaves produce a large amount of floral substances; and standing of the rocked leaves is carried out under condition of a constant temperature of 11 (+/- 1 DEG C); meanwhile the standing time is prolonged correspondingly, so as to increase the content of the effective components in the leaves, change the proportion of primary effective components, and further expand and develop the flower fragrance.

The invention discloses a method for preparing alginate/cellulose composite fibers, which comprises the following steps: (1) impregnating cellulose pulp with solution of NaOH for alkalization and obtaining alkaline cellulose; (2) adding sodium alginate in an amount which is 1 to 5 weight percent based on the weight of the cellulose into the alkaline cellulose, and mixing uniformly; (3) adding CS2 into the mixture to perform a sulfonation reaction, adding deionized water for dissolving the product of the sulfonation reaction, and obtaining cellulose/alginate xanthogenate viscose; (4) filtering, deforming and aging the cellulose/alginate xanthogenate viscose to obtain viscose spinning solution; and (5) performing wet spinning molding of the viscose spinning solution, solidifying and regenerating the molded product to obtain the alginate/cellulose composite fibers. The alginate/cellulose composite fibers prepared by the method are applicable in the field of health and medicine and can be used for making underwear.

The invention relates to a production method for a steel ingot of large-sized high-nitrogen retaining ring steel. The production method comprises the following steps: 1) smelting and casting: optimizing raw materials, primarily smelting molten steel EAF by using an electric arc furnace, refining AOD and LF by using a ladle furnace, performing die casting on ICM and pouring an electrode of phi 422 to 510 mm; 2) performing hot charging and annealing; 3) remelting electroslag into the steel ingot of phi 660 to 800 mm; and 4) sampling, detecting the components, performing flaw detection, peeling electroslag and steel ingot sand, detecting size and appearance and putting into a storage. In the steel ingot of the high-nitrogen retaining ring steel manufactured by the method, the phi is 660 to 800 mm, the weight is more than 5 tons, the nitrogen content is over 0.6 weight percent, the nitrogen is distributed into the steel ingot uniformly, and the |[N] head-[N]tail| of the head and the tail of the steel ingot is less than or equal to 0.05 weight percent.

The invention relates to a high-carbon gray cast iron automobile brake disk and a production method thereof. The high-carbon gray cast iron automobile brake disk comprises the following chemical components in percentage by weight: 3.7-3.8% of C, 0.5-0.8% of Mn, 0.3-0.5% of Cu, 0.1-0.2% of Cr, 0.2-0.4% of Mo, 1.6-2.0% of Si, 0.1-0.2% of N, 0.01-0.12% of P, 0.05-0.12% of S and the balance of Fe. The brake disk provided by the invention has the outstanding characteristics of small brake temperature rise, abrasion resistance, favorable heat fatigue resistance effect and the like; the performance of an automobile brake system can be obviously improved, and the service life can be obviously prolonged; and meanwhile, the potential safety hazard caused by ineffective brake due to high temperature can be effectively eliminated. Thus, the high-carbon gray cast iron automobile brake disk has high economic value.

The invention provides a preparation method of a graphene and ultrahigh-molecular-weight polyethylene composite fiber. The preparation method comprises the following steps: S1: dispersing ultrahigh-molecular-weight polyethylene resin and a filler into a solvent by adopting a blending method to form a uniform resin dispersion solution; S2: adding graphene powder into a dispersant, heating the mixture to certain temperature, adding an emulsifier for emulsification, and obtaining a graphene dispersion solution; S3: adding the graphene dispersion solution into the resin dispersion solution, and stirring and heating the mixed solution to obtain a spinning solution; S4: performing spinning, precursor fiber stewing and thermal stretching on the spinning solution, thus obtaining the graphene and ultrahigh-molecular-weight polyethylene composite fiber. According to the preparation method provided by the invention, the intensity of the ultrahigh-molecular-weight polyethylene fiber is enhanced byadding a filling material and graphene into ultrahigh-molecular-weight polyethylene fiber, so that the final intensity is up to 30 to 45 cN/dtex; in addition, the composite fiber further has excellent properties of ultraviolet resistance, cutting resistance and the like.

The invention relates to Chinese medicinal composition granules and a preparation method thereof. The Chinese medicinal composition granules comprise the following ruptured powder in part by weight: 3 to 18 parts of American ginseng ruptured powder, 1 to 24 parts of pseudo-ginseng ruptured powder, 6 to 36 parts of dendrobium ruptured powder, and 9 to 45 parts of root of red-rooted salvia ruptured powder, wherein the granularity D90 of the ruptured powder is between 5 and 75 mu m. The invention also provides a method for preparing the Chinese medicinal composition granules. The method comprises the following steps of: uniformly mixing the American ginseng ruptured powder, pseudo-ginseng ruptured powder, dendrobium ruptured powder, and root of red-rooted salvia ruptured powder of which the D90 is between 5 and 75 mu m; preparing a soft material by adopting aqueous ethanol at the concentration of over 20 vol percent; and after granulating by using a granulator with 10 to 30 meshes, drying and finishing the granules to obtain the Chinese medicinal composition granules. The Chinese medicinal composition granules are applied to preventing and regulating human cardiac-cerebral vascular system diseases and sub-health state such as weak immunity and fatigability, have the obvious advantages of high medical effect, high quality uniformity, convenient carrying and administration, safety, reliability, and the like, and can meet the requirement on modern fast-paced lifestyle.

The invention provides a duplex stainless steel thin strip and a near-net shaping preparation method thereof, and belongs to the technical field of steel alloy materials. The duplex stainless steel thin strip comprises, by mass, 0.0001%-0.03% of C, 18%-22% of Cr, 5%-7% of Mn, 0.3%-0.45% of N, 0.0001%-0.1% of Ni, and the balance iron and other inevitable impurities. The preparation method includes the steps that (1) smelting is carried out under nitrogen; (2) molten steel is guided out along with rotation of crystallizing rollers to form a cast strip, and the cast strip is cooled to the room temperature through water; (3) hot rolling is carried out for 1-2 passes, and the strip is cooled to the room temperature through water; (4) the hot-rolled stainless steel thin strip is subjected to acid pickling; (5) the stainless steel thin strip is cold-rolled; and (6) a finished product is obtained after solution annealing. The duplex stainless steel thin strip prepared through the method has a good corrosion property; the initial as-cast structure is refined, and a good property can be obtained in subsequent processing; according to the preparation method, segregation of elements is restrained, and the alloy elements can be distributed more evenly after subsequent rolling and solution annealing; cost is low, and the production process is simple and easy to operate.

The invention provides a method for extracting iodine from kelp by comprehensively utilizing brown algae, and can solve the problems in the prior art that heavy metal is remained in the iodine from kelp. The invention adopts the brown algae as raw materials to prepare the iodine from kelp; in an extraction process, a principle that alginate from the brown algae absorbs the heavy metal is utilized, so as to solve the residue problem of the heavy metal in the iodine from kelp during the physical extraction process; and on the premise of ensuring the content of the iodine from kelp, the active ingredients of the kelp are remained to the maximum. At the same time of extracting the iodine from kelp, algae fine oil, algin and mannite are extracted by comprehensive utilization, so that the utilization rate of the kelp is increased to the maximum.

The invention discloses health-care pine needle tea and a preparation method thereof. The health-care pine needle tea is prepared by intermixing and interpenetrating the concentrated extract of pipe needles and common tea. The preparation method comprises the following steps: material-selecting, cleaning, soaking, low-temperature drying, concentrating, extracting, intermixing, interpenetrating, air-drying, sterilizing and packaging, wherein, the salt solution with 8% concentration is used for cleaning and soaking, so as to remove waxiness from the epidermis of the pine needles and relieve the bitter taste thereof; the step of low-temperature drying adopts a method of low-temperature vacuum drying or natural air drying; the steps of concentrating and extracting are particularly the high-temperature extraction of pine needles and water by a certain ratio; the extracted pine needle concentrated solution and the tea are intermixed and interpenetrated by a ratio; the interpenetrated tea is further air-dried; and the dried tea is packaged through high-temperature sterilization to obtain the pine needle tea. The invention can maximize various nutritional components in the pine needles, particularly, the nutritional substance in the pine needle extract can be released quickly and fully absorbed easily by the human body after the tea product is soaked into boiled water, so that the administration effect is remarkable; and the prepared pine needle tea can achieve various health-care effects on the human body.

The invention discloses a treatment method of high-concentration organic wastewater. The method has a favorable treatment effect on high-concentration organic wastewater of which the COD (Chemical Oxygen Demand) concentration is larger than 50000mg/L and the chromaticity is larger than 10000 times. The hardly degradable substances in the treated wastewater can be degraded, so that the biodegradability of the treated wastewater is improved and the treated wastewater reaches the biochemical treatment requirement. The treatment method smartly combines ultrasonic splitting, micro-electrolytic decomposition and high-grade oxidation, and the problem that the high-concentration organic wastewater which has high COD and large toxicity and is difficulty biochemically degraded is solved.

The invention discloses a Chinese wolfberry clear-soup hotpot seasoning and a preparation method thereof, and belongs to the technical field of seasoning. The Chinese wolfberry plain hotpot seasoning comprises an oil packet, a seasoning packet, a spice packet, a vigour nourishing delicacy packet and a Chinese wolfberry packet according to the mass ratio of (5-20):(1-50):(0.5-3):(1-5):(0.5-10), wherein the oil packet mainly comprises raw materials as follows: 50-200 parts of edible vegetable oil, 3-8 parts of onions, 3-10 parts of zanthoxylum oil, 5-20 parts of Chinese wolfberry concentrated juice, 1-10 parts of red date concentrated juice, 1-10 parts of edible mushroom enzymatic hydrolysate, 5-10 parts of tomato onion sauce and 1-20 parts of concentrated soup stock. The raw materials are subjected to different pretreatment of microbial fermentation, enzymolysis, superfine grinding, boiling for concentration and the like and then subjected to stir-frying, heat preservation and soaking, so that the content of nutrient substances in the hotpot seasoning is guaranteed, various aromatic substances and flavor substances can be produced, and the hotpot seasoning is fresh, savoury and delicious, tastes mellow, is not dry and peppery and has rich nutrition.

The invention relates to a glass fiber reinforced gypsum product, which comprises the ingredients including gypsum powder, glass fiber, water reducing agents, retarding agents and water, wherein the glass fiber is short glass fiber with the length ranged form 1 to 3cm, and is uniformly distributed in the gypsum product. Because the glass fiber reinforced gypsum product of the invention adopts 1 to 3 cm of glass fiber uniformly and disorderly distributed in the gypsum product, the intensity and the toughness of each part of the gypsum product are enhanced, and the delamination structure is avoided. The invention also provides a method for preparing the glass fiber reinforced gypsum product, and special equipment for implementing the method.

The invention discloses an aluminium alloy with high forming property for an automobile body plate, comprising the following chemical constituents in percentage by weight: 0.50-1.20wt% of Si, 0.35-0.70wt% of Mg, 0.01-0.20wt% of Cu, 0.05-0.20wt% of Mn, less than or equal to 0.10wt% of Cr, 0.01-0.25wt% of Zn, less than or equal to 0.15wt% of Ti, 0.05-0.15wt% of Fe and the balance of Al. The aluminium alloy material of the invention has lower yield strength before baking finish, which is favourable for stamping shaping; and after baking finish, the yield strength is improved. The material has higher forming property and simultaneously satisfies the requirements of the impact resistance of the automobile body plate.

The invention specifically relates to a preparation method of a Se-C positive electrode composite material of a lithium-selenium battery. The preparation method comprises the following steps: firstly, putting selenium and carbon materials into a ball mill and mixing by ball milling, and then putting the mixture into a microwave furnace for microwave heating compounding to prepare the Se-C positive electrode microwave composite material high in dispersion uniformity. The carbon material utilized in the preparation method is a material subjected to commercial quantity production and is low in cost; meanwhile, according to the microwave heating compounding method, the operation process is simple, the energy consumption is low and the yield is high; the product is relatively high in performance consistency, and can be produced continuously and applied commercially.

The invention relates to an edible plant source fresh-cut fruit and vegetable coating film preservative. The edible plant source fresh-cut fruit and vegetable coating film preservative is prepared from the following components in percentage by weight: 3 to 10 percent of fresh ginger extracting liquid, 0.2 to 0.5 percent of low-molecular chitosan, 2 to 5 percent of citric acid, 0.03 to 0.1 percent of tea polyphenol, 0.01 to 0.1 percent of resveratrol, and the balance of deionized water, wherein the sum of the components in percentage by weight is 100%. The edible plant source fresh-cut fruit and vegetable coating film preservative has the advantages that by adding the antioxidants of the tea polyphenol, the resveratrol, the citric acid and the like into a chitosan coating film, the browning speed of fresh-cut fruits and vegetables is effectively decreased, the storage time of the fruits and the vegetables is effectively prolonged, and the activities of various antioxidant active matters and antioxidant enzymes in the fruits and the vegetables are improved; the added biological antioxidants have no poison and harm, and can be eaten, the injury to a human body is avoided, and the preserving effect is better.

A disclosed high-yield laying hen forage is prepared from the following raw materials in percent by weight: 400-500 parts of corn, 80-100 parts of rapeseed cake, 100-120 parts of soybean germ meal, 60-80 parts of tomato seed meal, 50-60 parts of peanut skin, 50-60 parts of sunflower seeds, 45-50 parts of ant powder, 25-30 parts of konjak, 10-15 parts of calcium hydrogen phosphate, 8-10 parts of tarragon, 12-15 parts of haw, 9-12 parts of atractylodes lancea, 20-25 parts of red date, 8-10 parts of lilium brownie, 18-22 parts of grape seeds, 1-2 parts of table salt and 4-5 parts of a feeding promoting agent. The chicken forage is abundant in crude protein content, is capable of satisfying demand amount on protein of the laying hens during egg laying period; and the added traditional Chinese medicine components contain natural antibiotics, help to prevent multiple diseases, improve egg quality and deepen yolk color, and also help to improve palatability of the forage, promote the appetite of the laying hens, avoid forage waste and reduce cultivation cost.