195results about How to "Optimize chemical composition" patented technology

The invention relates to braze welding Si3N4 ceramics containing the boron Ti-based amorphous solder and the preparation method thereof, and belongs to the brazing material in the field of amorphous state and metallurgy. The ingredients of the brazing material consist of the following according to the mass percent: Zr of 12.0-28.0 percent, Ni of 12.0-28.0 percent, Cu of 12.0-28.0 percent, and B of 0.05-0.5 percent, and the remains is Ti. The melting scope of the brazing material ranges 1,150K to 1,250K, and the brazing temperature is from 1,273K to 1,373K. The Ti-Zr-Ni-Cu-B amorphous braze vacuum braze welding Si3N4 ceramics, which is produced by the rapid solidification technology, has superior high-temperature performance to Ag-Cu-Ti solder and Ti-Zr-Ni-Cu solder. The tie-in high-temperature bend strength reaches 145MPa under 673K DEG,108MPa under 773K DEG, and still 93MPa under 873K DEG.

The invention discloses a fruit flavor for cigarettes and application of the flavor. The fruit flavor for cigarettes is prepared by naturally fermenting, filtering, centrifuging, and freeze-drying edible fruits and sugar as raw materials. The fruit flavor is rich in active enzyme, reducing sugar, amino acid, vitamin, trace elements and minerals and the like and can be used in tobacco leaf or shredded stem feeding process. The fruit flavor for cigarettes is simple to manufacture, safe and environmentally friendly and has good application prospects; by the fruit flavor, the internal quality of the cigarettes can be significantly improved.

The present invention discloses an edible fungi culture medium and a preparation method thereof. The preparation method comprises: (1) carrying out a pretreatment on giant knotweed rhizome drug residue, wherein the pretreatment comprises adding water to giant knotweed rhizome drug residue and carrying out enzymolysis; and (2) preparing an edible fungi culture medium, wherein the treated giant knotweed rhizome drug residue is added with quick lime, gypsum, sucrose, cottonseed hulls and wheat bran, and uniform stirring is performed. According to the edible fungi culture medium, a resveratrol mass fraction is more than or equal to 0.1%. a crude protein mass fraction is more than or equal to 6%, a nitrogen-free extract mass fraction is more than ore equal to 30%, and a crude fiber mass fraction is more than or equal to 30%. According to the present invention, a complex enzyme preparation is adopted to carry out fermentation and enzymolysis to improve components of the giant knotweed rhizome drug residue, such that the components are applicable for cultures of pleurotus eryngii, cap fungus, coprinus comatus and other edible fungi.

The invention relates to laser wire-filling local bionic-texture manufacturing method and equipment for metal functional surfaces, belongs to the field of processing of metal materials and aims to provide a technical method and a manufacturing device which are capable of effectively improving thermal fatigue resistance and wear resistance on the metal functional surfaces. For different metal base materials, by combining the automatic wire filling technology with the vision sensing and small-power laser technology, a novel method for manufacturing bionic texture on metal functional spatial curved surfaces is provided. In order to implement the mentioned technical method, strengthening equipment composed of a control unit, a vision system, an adjustable temperature heating wire feeding machine, a laser and a five-freedom-degree numerical-control worktable is researched, thermal fatigue resistance and wear resistance of the metal functional surfaces are effectively improved, cost performance is good and production efficiency is high.

The invention relates to a nickel-saving rare-earth/barium-containing biphase stainless steel alloy material and a preparation method thereof. The alloy material is composed of the following components in percentage by mass: at most 0.025% of C, at most 0.005% of O, at most 0.006% of S, at most 2.00% of Si, at most 0.025% of P, 2.00-5.00% of Mn, 17.0-21.0% of Cr, 1.0-2.5% of Ni, 0.1-2.0% of W, 0.1-1.0% of Cu, 2.0-5.5% of Mo, 0.2-0.40% of N, 0.001-0.01% of B, 0.0005-0.01% of Ba, 0.01-0.2% of lanthanum-cerium mixed rare earth RE and the balance of Fe. The preparation method comprises the following steps: smelting, casting, cast ingot or casting blank cogging, hot rolling and solution treatment. The method has the advantages of nickel saving and low production cost, obviously enhances the mechanical strength, and improves the hot working properties, corrosion resistance and the like.

A preparation of increasing the quality of tobacco leaf features it contains cellulase, proteinase, pectinase, amylase, beta-amylase and yeast powder. It can speed up the process of natural ageing of tobacco and shortening natural ageing cycle of tobacco.

A novel electrically conductive polymer composite composed of polycaprolactone fumarate-polypyrrole (PCLF-PPy) for applications in nerve regeneration is disclosed. The synthesis and characterization of PCLF-PPy and in vitro studies showing PCLF-PPy supports both PC12 cell and Dorsal Root Ganglia neurite extension. PCLF-PPy composite materials were synthesized by polymerizing pyrrole in pre-formed scaffolds of PCLF resulting in an interpenetrating network of PCLF-PPy. PCLF-PPy composite materials possess electrical conductivity up to 6 mS cm⁻¹ with compositions ranging from 5-13.5 percent polypyrrole of the bulk material. Surface topographies of PCLF-PPy materials show microstructures with a RMS roughness of 1195 nm and nanostructures with RMS roughness of 8 nm. PCLF-PPy derivatives were synthesized with anionic dopants to determine effects on electrical conductivity and to optimize the chemical composition for biocompatibility. In vitro studies using PC12 show PCLF-PPy composite materials induce a higher cellular viability and increased neurite extension compared to PCLF. PCLF-PPy composites doped with either naphthalene sulfonic acid or dodecyl benzene sulfonic acid are determined to be the optimal materials for electrical stimulation. In vitro studies showed significant increases in percentage of neurite bearing cells, number of neurites per cell and neurite length in the presence of ES compared to no ES. Additionally, extending neurites were observed to align in the direction of the applied current. Electrically conductive PCLF-PPy scaffolds possess material properties necessary for application as nerve conduits. Additionally, the capability to significantly enhance and direct neurite extension by passing electrical current through PCLF-PPy scaffolds renders them even more promising as future therapeutic treatments for severe nerve injuries.

The invention provides a threshing and re-drying processing method of high-grade tobacco leaf raw materials. According to the method, tobacco leaves on the upper portion and in the middle serve as the raw materials and divided into multiple segments according the lengths of the leaves, and the total weight and the nicotine content of each segment of tobacco leaf of each portion are determined; before feeding and threshing, multiple threshing combined formulas are formed through matching according to the total feeding amount and the content of chemical components, wherein the addition amount of the tobacco leaves in the middle portion in each formula is not smaller than 30%, and the same segments of tobacco leaves of the same portion are added into the same formula; the content of the tobacco leaves on the upper portion and the nicotine content in each formula are calculated, a threshing and re-drying formula meeting feeding requirements is determined for feeding, and then threshing and re-drying start according to an existing threshing and re-drying technology to obtain the combined high-grade tobacco leaf raw materials. The method guarantees uniformity and stability of the tobacco leaves obtained after threshing and re-drying, and can provide the good-quality and uniform tobacco leaf raw materials for high-end brand cigarettes.

The invention discloses a preparation method of reconstituted tobacco from tobacco stem and tobacco powder by papermaking method. The method comprises soaking to extract tobacco stem and tobacco powder, and filtering to obtain extractive solution and residue; subjecting the residue to pulping, sheet-making, squeezing and drying to obtain sheet base; and coating the extractive solution on the sheet base. The invention performs systematic research on squeezing process, provides suitable squeezing process conditions, effectively improves physical properties, chemical composition, tensile index, tearing index, bulkiness, density, air permeability, filling value, wettability and permeability of tobacco sheet base, comprehensively improves surface properties and interior structure of sheet base, and improves operation performance and effectiveness of tobacco sheet base production line.

The invention relates to a large-thickness rack steel plate directly produced by a continuous casting billet. The steel plate takes Fe as a base component and further comprises the following chemical components by mass percent: 0.10% to 0.16% of C, 0.15% to 0.35% of Si, 0.95% to 1.25% of Mn, less than or equal to 0.010% of P, less than or equal to 0.005% of S, greater than or equal to 2.4% and less than or equal to 3.0% of Cr+Mo+Ni+Cu, greater than or equal to 0.08% and less than or equal to 0.13% of Al+V, less than or equal to 0.007% of N and 0.001% to 0.002% of B. A manufacturing method of the large-thickness rack steel plate comprises the following steps of KR molten iron pretreatment, converter smelting, LF (ladle furnace) refining, RH refining, continuous casting, casting billet covering for slow cooling, casting billet clearing, heating, high-pressure water descaling, rolling control, straightening, accumulation slow-cooling or slow cooling under a control condition and tempering. The steel plate is high in strength, good in plasticity, high in Z-direction performance and high in low-temperature toughness. In addition, the steel plate is simple and convenient in production process and low in cost.

The invention discloses a curing process of Yunyan 87 in a biomass energy curing barn. A three-segment curing process in the prior art is improved, and according to the characteristics and quality oftobacco leaves of the flue-cured tobacco variety Yunyan 87, the following steps are designed; the curing process comprises the steps of tobacco weaving loading, building fire temperature controlling,tobacco leave yellowing, tobacco leave color fixing and tobacco leave stem drying. The curing process has the advantages of being easy to operate and high in operability, keeping color fixing stability and loose structure of the tobacco leaves, and greatly improving the oil content and aroma quantity; the cured tobacco leaves are yellow, bright, soft and fragrant, and the style and characteristicsof the sweet and fragrant type tobacco leaves are more obvious.

The invention provides a high performance cutting pick and a manufacturing method thereof, the high performance cutting pick comprises a tooth tip and a tooth body. The tooth body is high-strength, high-toughness and high-wear-resistance steel. The chemical components are as following by weight percent, 0.30 to 0.40 of C, 2.30 to 2.50 of Si, 2.20 to 2. 60 of Mn, 0.80 to 1.50 of Cr, 0.35 to 0.45 ofMo, 0.01 to 0.1 of Re, 0.02 to 0.04 of Nb, less than 0.01 of S, less than 0.01 of P, and the rest of Fe. After raw materials are refined and cast to obtain steel ingots or subjected to continuous casting to obtain continuous casting billets, after being rolled into round steel, cutting and annealing are conducted, and finally a cutting pick body is obtained by cold forging. The tooth tip is prepared from cemented carbide and welded to the tooth body by medium frequency induction heating. After cooling, austempering treatment is conducted, and finally discharging and air-cooling to room temperature are conducted. The finally obtained tooth body has tensile strength sigma b of 1700 to 2000MPa, yield strength sigma s of 1100 to 1520MPa, elongation delta of 16 to 35%, section shrinkage phi of45 to 55%, impact work Aku of 55 to 90 J, hardness HRC of 53 to 62, and strong plastic product of 32 to 51 GPa.%. The microstructure of the tooth body is a nano-carbide-free bainite-martensitic multiphase organization, and the thickness of a substructure slat is 10 to 50 nm.

The invention provides a silicon-manganese-chrome-molybdenum low-alloy steel excavator bucket tooth and a production technique thereof. The silicon-manganese-chrome-molybdenum low-alloy steel of the excavator bucket tooth comprises 0.26-0.36 wt% of C, 0.80-1.20 wt% of Si, 0.80-1.20 wt% of Mn, 1.00-1.30 wt% of Cr, 0.30-0.40 wt% of Mo, at most 0.02 wt% of P, at most 0.02 wt% of S, greater than 0 and smaller than and equal to 0.50wt% of Ni, and the balance of Fe. The production technique is composed of a casting technique and a heat treatment technique. The silicon-manganese-chrome-molybdenum low-alloy steel excavator bucket tooth produced by the method is a bainitic structure, and has the advantages of favorable mechanical properties, high hardness, high toughness, high wear resistance, high tensile strength and long service life.

The invention discloses a rust-resistant hot rolled ribbed bar and a production process thereof. The chemical components of the ribbed bar comprise C, Si, Mn, V, Cr, P and S, wherein the percentages by weight of the chemical components are as follows: 0.20-0.25% of C, 0.40-0.60% of Si, 0.90-1.10% of Mn, 0.010-0.020% of V, 0.15-0.25% of Cr, not larger than 0.042% of P, not larger than 0.040% of S and the balance of iron and unavoidable impurities. The production process mainly comprises the following steps: (1) preparation of blast furnace molten iron; (2) top-blown converter smelting; (3) LF furnace molten steel refining; (4) continuous casting; (5) rolling steel production; (6) cooling treatment. The rust-resistant hot rolled ribbed bar disclosed by the invention has the advantages that the chemical components of the ribbed bar are optimized, the addition amount of alloy elements is adjusted, the alloy cost is greatly reduced, the rolled cooling strength is reduced, the mechanical properties of the bar are guaranteed, damage of the strong water penetration cooling process on iron oxide coating on the surface of the ribbed bar after rolling is avoided as well, and the rust resistance of the ribbed bar is guaranteed.

This invention provides an aluminum alloy plate of battery shell for simultaneously enhancing compression strength and laser welding performance, and battery shell manufactured with this aluminum ally plate, namely, an aluminum alloy of battery shell composed of Si: 0.10-0.60 mass%, Fe: 0.05-0.60 mass%, over 0.70-below 1.0 mass%, Mn: 0.10-1.80 mass%, Mg: over 0.70-1.50 mass%, Zr: over 1.10-below 0.20 mass%, Ti: 0.03-0.25 mass%, surplus Al and unavoidable impurity, and aluminum alloy plate of battery shell manufactured with the chemical formulation and to be aged after manufacture.

The invention discloses a high-quality pavement petroleum asphalt material and a preparation method thereof, belonging to the pavement engineering material technical field. The petroleum asphalt material is prepared from the raw materials according to the parts by weight: 80-95 parts of main asphalt, 5-20 parts of formulated asphalt, 0.01-2 parts of macromolecular crosslinking agent and 0.001-0.25 part of heat stabilizer. The invention adopts chemical crosslinking, heat stabilizer and the combination of cutting and milling to promote the matching of the four components of asphalt to be further optimized and develop in the direction of forming stable colloid structure, improving the pavement performance of the formulated asphalt material and increase the stability of the formulated asphalt product. The invention makes full use of the vacuum residue of residual oil and heavy crude which are treated through vacuum deep extraction and increases the use value so as to reach the effect of resource recycling and environmental protection.

The invention discloses a high-temperature resistant hydrophobic material and a preparation method thereof; and the preparation method of the high-temperature resistant hydrophobic material adopts a magnetic filter cathode vacuum arc discharge method to deposit multiple film layers on the surface of a workpiece, and adopts a laser etching method to etch a texture on the surface of the workpiece after the deposition of the film layers, wherein the film layer deposition step and the texture etching step are alternately performed. The coating layers, prepared by the method, can improve the high-temperature oxidation resistance of materials while improving the surface hydrophobic performance of metal materials, and are excellent in mechanical performance, high in strength and long in service life. The method adopts the laser etching technology to continuously improve chemical components in the coating layers and local metallurgy state to form specific texture while using the magnetic filter cathode vacuum arc discharge technology to prepare the film layers, so that the oxidation resistance of the coating layers is further improved through the alternately distributed multilayer components.

The invention relates to a method for preparing a graphite-phase carbon nitride visible-light-induced photocatalyst by copolymerization of 2-aminoterephthalic acid and an amine compound. The method comprises the following steps: uniformly mixing the amine compound and the 2-aminoterephthalic acid to obtain mixed powder, and calcining the mixed powder at 520-600 DEG C to obtain the graphite-phase carbon nitride visible-light-induced photocatalyst. The preparation method is simple, and the obtained novel graphite-phase carbon nitride has better visible light catalytic hydrogen production performance compared with original carbon nitride.

The invention discloses a continuous-casting mold flux for decreasing sticking steel breakouts and a preparation method thereof. The continuous-casting mold flux for decreasing the sticking steel breakouts comprises the following chemical components of, by weight, 32.5-35.5 percent of SiO2, 29.5-31.5 percent of CaO, 1.5-3.0 percent of MgO, 2.2- 3.0 percent of Al2O3, 0.5-1.5 percent of Fe2O3, 11.0-13.0 percent of Na2O, 10.0-12.0 percent of F-, 3.0-4.0 percent of C solid and the balance unavoidable impurity, wherein the binary basicity is 0.87 to 0.93; a melting point is 1050 to 1070 DEG C; and the viscosity below 1300 DEG C is 0.115Pa*S to 0.135Pa*S. In the practical application of the mold flux, a flame in a crystallizer is uniform; the spreadability is better; caking and agglomerating phenomena do not exist; a melt cinder is stable; the lubrication is sufficient; and the rate of the sticking steel breakouts can be decreased to below 5 percent from original 10 to 20 percent.

The invention discloses arevitalizing essence comprising prezatide copper acetate. The revitalizing essence is prepared from the following raw materials in parts by weight: 0.5 to 2 parts of opuntia streptacantha stem extract, 2 to 6 parts of glycerinum, 0.3 to 0.7 part of phenoxyethanol, 1 to 2 parts of hydrolyzed sodium hyaluronate, 2 to 6 parts of radix sophorae extract, 3 to 8 parts of radix ophiopogonis root extract, 3 to 6 parts of trehalose, 1 to 3 parts of moisturizing factors, 1 to 3 parts of lavender oil, 0.1 to 0.3 part of aminomethyl propanol, 1 to 2 parts of 1,2-hexanediol, 1 to 3parts of butanediol, 0.5 to 1 part of glycine betaine, 0.5 to 1 part of PCA sodium, 0.5 to 0.8 part of urea, 0.7 to 1.2 parts of peptide-1 copper, 1 to 2 parts of smithsonite extract, 2 to 4 parts ofxanthan gum, 0.3 to 0.8 part of p-hydroxyacetophenone, 1 to 3 parts of PEG-40 hydrogenated castor oil, and 80 to 100 parts of water. By adopting the revitalizing essence comprising the prezatide copper acetate and the production method thereof, the slack skin is tightened by adding the prezatide copper acetate (peptide-1 copper) in the skincare product, the resilience is improved, the moisturizing effect of the skincare product can be greatly improved by virtue of the opuntia streptacantha stem extract, and the revitalizing essence is non-irritating to the skin and is convenient for people touse.

The invention provides a method for improving the moisture retaining performance of paper-making reconstituted tobaccos with modified tobacco stem extract. The method comprises the following steps: adding ammonium hydroxide into tobacco stem extract to adjust the pH value of the system; adding sugar, amino acid and polyhydric alcohols, uniformly stirring and mixing, heating to a certain temperature, reacting for 1.5 hours, and cooling for later use; and adding the mixed liquid obtained in reaction into the paper-making reconstituted tobaccos as a coating solution, and keeping the reacting temperature at 130 DEG C. The method adopts the chemically modified tobacco stem extract to improve the chemical composition of the tobacco stem extract for the first time, so that the moisture retaining performance of the paper-making reconstituted tobaccos can be remarkably improved; and the reacting temperature is critical to the reaction, varieties and proportions of the reacting product obtained at over low or over high temperature are entirely different, and the quality and moisture retaining performance of flakes can be improved by the reaction product, namely modified tobacco stem liquid only when a proper reacting temperature is selected. The method is easy and feasible to operate, has the advantages of wide raw material source and low cost, and can remarkably improve the quality of paper-making reconstituted tobaccos.