44 results about "Chemical composition" patented technology

A deformable Al-Mn alloy contains Si (0-0.6%), Fe (0-0.7%), Cu (0-0.3%), Mn (0.3-1.6%), Mg (0-1.3%), Ti (0.005-0.15%), RE (0-0.4%), B (0-0.03%), impurities (0-0.7%) and Al (rest). Its preparing process includes such steps as smelting fine-crystal Al ingot, adding others, smelting Al-Mn alloy, and pressure machining.

The present invention provides a series of methods, compositions, and articles for patterning a surface with multiple, aligned layers of molecules, by exposing the molecules to electromagnetic radiation. In certain embodiments, a single photomask acts as an area-selective filter for light at multiple wavelengths. A single set of exposures of multiple wavelengths through this photomask may make it possible to fabricate a pattern comprising discontinuous multiple regions, where the regions differ from each other in at least one chemical and/or physical property, without acts of alignment between the exposures. In certain embodiments, the surface includes molecules attached thereto that can be photocleaved upon exposure to a certain wavelength of radiation, thereby altering the chemical composition on at least a portion of the surface. In some embodiments, the molecules attached to the surface may include thiol moieties (e.g., as in alkanethiol), by which the molecule can become attached to the surface. In some embodiments, the molecules may be terminated at the unattached end with photocleavable groups. In other embodiments, a molecule that was photocleaved may be exposed to another molecule that binds to the photocleaved molecule. In certain cases, the molecules may be terminated at the unattached end with hydrophilic groups that may, for example, be resistant to the adsorption of proteins. In other cases, the molecules may be terminated at the unattached end with end groups that are not resistant to the adsorption of proteins. In certain embodiments, the techniques are used to pattern simultaneously two different regions that are resistant to the adsorption of proteins, and a third region that does not resist the adsorption of proteins.

It is an object of the present invention to provide a solution for creating an effective method for retarding unhealthy manifestations brought by ageing of human beings (in particular, but not limited to the reduction of sexual activity and fertility, climax, changes in glucose tolerance, reduction of cognitive and mnestic functions, reduction of stress resistance, development of organ and tissue sclerosis) without directly affecting the genetic apparatus of the ageing cells.

According to the invention this task is solved by administration into the blood circulation of the agent which inactivates extracellular blood plasma DNA; the extracellular blood DNA inactivating agent can be embodied in the form of an extracellular blood plasma DNA destroying agent; said extracellular blood plasma DNA destroying agent can be embodied in the form of an DNase enzyme; the extracellular blood plasma DNA inactivating agent can also be embodied in the form of an extracellular blood plasma DNA binding agent; the extracellular blood plasma DNA binding agent can be embodied in the form of anti-DNA antibodies; the extracellular blood plasma DNA inactivating agent can be administered in the form of an enzyme modifying the chemical composition of extracellular blood plasma DNA; the extracellular blood plasma DNA inactivating agent can be embodied in the form of an agent that stimulates synthesis or activity of endogenous deoxyribonuclease, or an agent that stimulates the synthesis of antibodies which capable to bind extracellular blood plasma DNA.

The bismuth sodium titanate-barium titanate base piezoelectric ceramic contains bismuth oxide, sodium carbonate, barium carbonate, titania and tin oxide, and has the chemical composition of (1-x)[(Na0.5Bi0.5)TiO3]-xBaTiO3-ySnO2, where x is 0-0.1, and y is 0-0.1. The preparation process of the bismuth sodium titanate-barium titanate base piezoelectric ceramic includes material compounding, vibration milling to mix, pressing block, pre-sintering, adding adhesive, rolling, eliminating glue, sintering, silver sintering and final polarizing in silicon oil. The present invention has effectively lowered coercive field and resistivity of the piezoelectric ceramic and simple and feasible polarizing process, and the technological process may be used in preparing various kinds of lead-free piezoelectric ceramic of different piezoelectric and dielectric performances for need of different fields.

The invention is directed to oil soluble additive compositions, lubricating oil compositions, and additive concentrates comprising the salt of (1) a molybdenum oxide, sulfide, or oxysulfide and (2) an amide reaction product of a carboxylic acid component and a polyamine component wherein the charge mole ratio (CMR) of the carboxylic acid component to the polyamine component is about 2:1 to 1:1.

The invention relates to a 2000 MPa-grade bridge cable galvanized steel wire and a preparation method thereof. The steel wire comprises the following chemical components of, in percentage by weight, 0.88%-0.94% of C, 1.05%-1.35% of Si, 0.40%-0.50% of Mn, 0.25%-0.35% of Cr, less than or equal to 0.07% of Cu, and the balance Fe and inevitable impurity elements; and the steel wire further comprises one or more than one of the following components of, in percentage by weight, 0.0005%-0.0015% of B, 0.01%-0.03% of Nb and 0.01%-0.03% of Mo; and the preparation method of the steel wire comprises the following steps of steel wire rod pre-treatment, drawing and hot galvanizing stabilization. The twisting performance of the galvanized steel wire is improved by strictly controlling of the chemical components of the steel wire rod, the surface quality and inclusion as well as optimizing the drawing and a hot galvanizing process; and the tensile strength of the galvanized steel wire produced by themethod can reach the 2000 MPa or above , and the torsion value is not less than 18 circles.

The invention discloses a high-surface-quality hot-galvanized transformation induced plasticity (TRIP) steel plate and a manufacturing method thereof. The hot-galvanized TRIP steel plate is prepared from chemical components in percentage by weight as follows: 0.10%-0.15% of C, 1.20%-1.80% of Mn, less than or equal to 0.030% of P, less than or equal to 0.030% of S, 1.20%-2.40% of Als and the balance of Fe and inevitable impurities. The manufacturing method of the TRIP steel plate comprises the steps as follows: continuous casting steelmaking-hot rolling-cold rolling-continuous annealing and hot galvanizing. The structure form of the hot-galvanized TRIP steel plate prepared with the method includes ferrite, bainite, retained austenite and martensite, the grain size grade ranges from Grade 10.5 to Grade 11, the tensile strength ranges from 640 MPa to 670 MPa, the yield strength ranges from 395 MPa to 465 MPa, the ductility is higher than or equal to 30%, the strength and ductility product can be 23GPa% or above, and the plate has the high surface quality, mechanical performance and corrosion resistance.

The invention discloses a low-cost high-strength steel plate for engineering machinery, and a production method thereof. The steel plate comprises, by mass, 0.16-0.18% of C, 0.3-0.4% of Si, 1.0-1.4% of Mn, 0.016% or less of P, 0.009% or less of S, 0.4-0.7% of Ni, 0.3-0.5% of Cr, 0.01-0.03% of Nb, 0.02-0.06% of Al, 0.30-0.40% of Mo, 0.010-0.030% of Ti, 0.0016-0.0030% of B, and the balance of Fe and inevitable impurities. The components of the steel plate produced through the method are reasonably designed, and a proper amount of boron element is added to reduce the use amount of alloy elements, so the production cost is low; a two-stage controlled rolling technology is adopted to solve coarse and uneven crystal grains due to common hot rolling, so the produced steel plate has excellent comprehensive mechanical performances and uniform rolled structure, and provides a uniform original structure for subsequent heat treatment; an offline quenching heat treatment technology is adopted to make the steel plate have a martensite structure, so the strength grade of the steel plate is improved, and the plate shape of the steel plate is good; and a tempering heat treatment technology is adopted to eliminate the internal stress of the steel plate, so the low temperature toughness of the steel plate is improved, and the structure of the steel plate is uniform.

The invention discloses a forging method of a driving shaft for a gearbox. The forging method of the driving shaft for the gearbox comprises the following steps: a step a of pouring a cylindrical blank material, wherein the cylindrical blank material comprises chemical components, by weight percent: no smaller than 0.096% but no greater than 0.150% of C, no smaller than 2.1% but no greater than 2.40% of Si, no smaller than 1.1% but no greater than 1.30% of Mn, no smaller than trace amountbut no greater than 0.033% of P, no smaller than trace amount but no greater than 0.0260% of S, 0.11-0.22% of Ni, no smaller than 8.50% but no greater than 11.50% of Cr, no smaller than trace amount but no greater than 0.018% of B, and the balance of Fe and inevitable included impurities; and the step a comprises the following steps: decreasing the temperature of blank bodies shaped in a pouring way to 350 DEG C, then heating the blank bodies to 670 to 760 DEG C for 3-5h heat preservation, cooling the blank bodies in a furnace to 300 DEG C for 4h heat preservation, reheating the blank bodies to 650 to 760 DEG C for 17h heat preservation, cooling the blank bodies to 400 DEG C at a speed of 50 DEG C per hour and finally cooling the blank bodies to 140 DEG C at a speed of 20 DEG C per hour; and a step b of forging, wherein the step b comprises the following steps: a step 1 of selectively using 30-diameter round steel and cutting by using a shearing machine, wherein the length of a sheared rough blank piece is 70.3mm; and a step 2 of putting the rough blank piece of the step 1 in an intermediate frequency heating furnace for heating at a heating temperature of 1120 to 1180 DEG C and keeping the heating for 3.6min. The forging method of the driving shaft for the gearbox is beneficial to the large-batch industrial production of the driving shaft for the gearbox; and moreover, the phenomena of dirt inclusion and impossible fullness occurring during the forging process are reduced, the mechanical performance of a product is further improved, the product material is saved and the service life of a die for the product is prolonged.

The invention relates to a high-carbon steel wire rod, in particular to a cord steel wire rod and a decarburized layer control method thereof. The chemical components of the cord steel wire rod comprise, by weight, 0.89%-0.94% of [C], 0.15%-0.25% of [Si], 0.25%-0.45% of [Mn], smaller than or equal to 0.015% of [P], smaller than or equal to 0.010% of [S], 0.20%-0.25% of [Cr], 0.0008%-0.0020% of [Al] and 0.0010%-0.0025% of total oxygen. The decarburized layer control method particularly comprises the following steps of 1 steel billet heating, specifically, the wire rod is produced by adopting square billets, the steel billet heating speed ranges from 0.93 min/mm to 1.0 min/mm, and the soaking zone temperature ranges from 1,050 DEG C to 1,090 DEG C; 2 wire rod rolling, specifically, after steel billet heating and rough rolling, intermediate rolling, pre-finish rolling and finish rolling are conducted, wire rod spinning operation is conducted, and the wire rod spinning temperature ranges from 880 DEG C to 900 DEG C; and 3 wire rod cooling, specifically, after spinning is conducted, the wire rod is cooled on an air cooling roll way, and the cooling speed ranges from 10 DEG C/s to 25 DEGC/s. The cord steel wire rod mainly contains the sorbite structure. The thickness of a decarburized layer on the surface of the wire rod is not larger than 40 micrometers, the condition that the steel wire strength is reduced due to the fact that the decarburized layer on the surface of the wire rod is inherited to the steel wire surface is prevented, and the steel wire strength and quality are improved.

The invention discloses a construction method and identification application of fingerprint spectra of natural apis cerana honey of lychee flowers and natural apis mellifera honey of lychee flowers. GC/MS fingerprint spectra of the natural apis cerana honey of lychee flowers and natural apis mellifera honey of lychee flowers are separately constructed by a headspace solid-phase microextraction-gaschromatography-mass spectrometry method and a traditional Chinese medicine fingerprint similarity evaluation system; and it determines that the GC/MS fingerprint spectrum of the natural apis cerana honey of lychee flowers contains 19 common feature volatile components, and the GC/MS fingerprint spectrum of the natural apis mellifera honey of lychee flowers contains 16 common feature volatile components. By comparison of similarity and chemical composition difference of a total ion chromatogram of a to-be-detected natural honey sample of lychee flowers and a constructed GC/MC fingerprint spectrum, the natural apis cerana honey of lychee flowers and the natural apis mellifera honey of lychee flowers are accurately distinguished and identified. The method has the characteristics of small useamount of the sample, high characteristics and reliable result, the problem that the natural apis cerana honey of lychee flowers and the natural apis mellifera honey of lychee flowers in markets aredifficult to distinguish is solved quite beneficially, and the social benefit is quite obvious.

The invention provides a low-aging sensitivity hot rolled plate with high strength and toughness and a manufacturing method thereof. The low-aging sensitivity hot rolled plate with high strength and toughness is composed of 0.13%-0.17% of C, 0.2%-0.5% of Si, 1.3%-1.8% of Mn, less than or equal to 0.015% of P, less than or equal to 0.005% of S, 0.03%-0.08% of V, 0.045%-0.06% of Cr, 0.012%-0.017% of N and 0.01-0.03% of Als by weight percentage, wherein N/V is less than or equal to 0.26, and Als is less than or equal to 1.5N+0.0012%. Smelting is realized in such a manner of converter furnace+LF+RH, and nitrogen is increased in a nitrogen blowing manner in the whole smelting process and the whole refining link of the converter furnace. The heating temperature of the blank ranges from 1100 to 1145 DEG C, the in-furnace time ranges from 180 to 360 min, and the soaking time ranges from 120 to 180min; first-stage rolling is adopted, the initial rolling temperature ranges from 1050 to 1130 DEG C, the pass deformation rate ranges from 15% to 25%, and the final rolling temperature ranges from 920 to 1050 DEG C. After being rolled, the steel plate is laid flatly and cooled until the surface temperature thereof is in the range from 500 to 700 DEG C. Consequently, the production efficiency can be improved and the raw material cost can be reduced; besides, the yield strength of the hot rolled plate is 475MPa, the tensile strength of the hot rolled plate is 641MPa, the elongation percentage of the hot rolled plate is 25%, and AKv at minus 40 DEG C reaches 104J.

The invention discloses a preparation method of an aluminum ingot. The preparation method comprises the steps of providing electrolytic primary aluminum liquid; obtaining the mass contents of vanadiumand titanium in the electrolytic primary aluminum liquid; according to the mass contents of vanadium and titanium in the electrolytic primary aluminum liquid, obtaining the mass of boron needing to be added to the electrolytic primary aluminum liquid every preset quality; providing a mass content change graph which shows the change of the mass content sum of vanadium and titanium along with the addition amount of boron; determining the optimal addition amount of an aluminum-boron intermediate alloy according to the mass content change graph; adding the aluminum-boron alloy to the electrolyticprimary aluminum liquid for smelting, and after stirring, standing is carried out for preset time; and taking an on-the-spot sample for chemical component analysis, and after the chemical component analysis result meets the requirement, opening a hearth of a mixing furnace for ingot casting operation. The preparation method has the following advantages: the low-vanadium low-titanium aluminum ingot product can be prepared, and under the broad environment of cost reduction and efficiency improvement, high-efficiency production of the low-vanadium low-titanium aluminum ingot is achieved throughthe ingot casting mixing furnace by optimizing the process and adjusting the production structure.

The invention discloses a method for producing high-temperature alloy by adopting induction heating vacuum refining, which is realized through the following steps that: in a 1 to 3-ton induction steelmaking furnace, induction is utilized to heat molten steel; the temperature of the molten steel is increased to 1380 DEG C to 1650 DEG C; 20 to 80 kg of CaO-Al2O3 (5 to 30 percent of Al2O3) refining slag series is added to the surface of the molten steel, wherein, CaO-Al2O3 contains 5 percent to 30 percent of Al2O3; after melting and refining slag, vacuum treatment is carried out by being covered with a vacuum cover; during the vacuum treatment, on one hand, argon gas is fed into the furnace through a porous plug at the bottom of the induction steelmaking furnace, and the flow of argon gas is kept at 5 to 20 liters/minute; on the other hand, the vacuum pressure in the induction steelmaking furnace is kept between 0 and 10Pa; the heating power of the induction steelmaking furnace is kept between 100 and 600KW; the refining time is kept between 15 and 45 minutes; after refining and vacuum treatment, slagging-off is carried out; under the protection of argon gas, tapping and ingot teeming are carried out; by adopting the method of the invention, gas contained in finished product and impurity contained in molten steel are greatly reduced; chemical compositions are very much uniform; product performance is greatly improved; besides, the production cost is greatly reduced.

The invention discloses high heat input welding resistant building steel and a production method thereof, and belongs to the technical field of steel production. The steel for the building comprises the following chemical components in percentage by mass: 0.05 to 0.18 percent of C, 0.05 to 0.75 percent of Si, 0.65 to 1.75 percent of Mn, 0.003 to 0.02 percent of P, 0.001 to 0.015 percent of S, 0.005 to 0.075 percent of Al, 0.01 to 0.05 percent of Nb, 0.01 to 0.07 percent of V, 0.005 to 0.04 percent of Ti, 0.001 to 0.01 percent of Mg + Ca, 0.002 to 0.01 percent of O, 0.005 to 0.015 percent of N and the balance of Fe and residual elements, the contents of V, Ti and N also meet the relational expression: 1.06 [Ti] < 3.64 [N] < [V] + 1.06 [Ti]. Precipitated particles formed by nitrides of titanium, niobium and vanadium and oxides of magnesium and calcium play roles in pinning austenite grains and promoting ferrite nucleation; and by adjusting alloy components and a smelting process, the number and form of various nitrides and oxides are reasonably and effectively controlled, coarse structures generated in the welding heat cycle process are eliminated, and the welding performance of the building steel is improved.

The invention discloses a hot-dip galvanized plate suitable for a low-temperature environment for a gas meter shell. The hot-dip galvanized plate comprises a substrate and a coating, and is characterized in that the substrate comprises the following chemical components of, in percentage by mass, less than or equal to 0.006% of C, less than or equal to 0.01% of Si, 0.08%-0.50% of Mn, less than or equal to 0.010% of P, less than or equal to 0.008% of S, 0.025%-0.060% of Als, 0.03%-0.09% of Ti, 0.0005%-0.0050% of B, less than 0.004% of N, less than 0.004% of O, less than or equal to 0.03% of Cu +Ni +Cr +Mo +Sn +As, and the balance Fe and inevitable impurities; the mass percentage of total aluminum in the coating is controlled to be 0.18%-0.23%; and the hot-dip galvanized steel plate is produced through the processes of steelmaking, hot rolling, acid pickling, cold rolling, annealing, galvanizing and finishing, the produced hot-dip galvanized steel plate has good deep drawability, the yield strength is 130-170 MPa, the tensile strength is 280-300 MPa, the A80 elongation is larger than or equal to 43%, the n value is larger than or equal to 0.21, and the r value is larger than or equalto 2.3, and after the part subjected to deep drawing forming is placed for 5 h at the low temperature of-30 DEG C to-50 DEG C, a shot with the weight of 6 kg is used for freely falling from the position with the height of 1 m to impact the part, the part is not cracked, and the use requirement of the gas meter shell is met.

The invention discloses a copper-silicon alloy material, an electroslag remelting preparation method thereof and a copper-silicon alloy wire material, and belongs to the technical field of non-ferrousalloys. The copper-silicon alloy material is prepared by an electroslag remelting process. The copper-silicon alloy material comprises the chemical compositions of 1.85-2.65% of Si, 0.6-1.0% of Mn, 0.2-0.3% of Ni, 0.08-0.2% of Ag, and the balance Cu. In the preparation process, a CaF2-NaF binary slag system with a high purity NaF is used, wherein the content of the high purity NaF is 25.5-28wt. %. A copper-silicon alloy ingot is rolled and wiredrawn to obtain the copper-silicon alloy wire material with excellent tensile properties. The wire material has good folding resistance, good fusing property and stable resistivity.

The invention discloses a visible-light responsive photocatalyst Sr3Ce2Ti6O19 and a preparing method thereof. The chemical composition formula of the photocatalyst is Sr3Ce2Ti6O19. The invention further discloses the preparing method of the photocatalyst Sr3Ce2Ti6O19. The preparing method is simple and low in cost, the prepared photocatalyst has good catalytic performance, the effect that harmful chemicals are decomposed under visible light irradiation is achieved, stability is good, and great application prospect is achieved.

The invention provides a manufacturing process for improving the wear resistance of the outer circular surface of the plunger. The process is carried out according to the following steps: 1. blanking and rough machining; 2. finishing groove; 3. groove roughness treatment; 4. thermal spraying nickel-cobalt-chromium alloy powder; 5. post-processing; 6. quality inspection. The invention can make the plunger surface with a thicker wear-resistant layer, high surface hardness, corrosion resistance, small friction coefficient, long wear-resistant life, and the plunger base has concave grooves to protect the thermal sprayed powder alloy layer under the impact state No peeling or peeling, it adopts the manufacturing process of thermal spraying alloy powder on the surface of the plunger, which thickens the wear-resistant layer on the surface of the plunger, and has special requirements on the chemical composition and chemical formula of thermal spraying nickel-cobalt-chromium alloy powder , so that the wear resistance of the plunger surface can meet the technical requirements of high-pressure and large-displacement plunger pumps in oil fields.

The invention discloses a coating for high-temperature chlorine corrosion protection and a preparation method of the coating. The coating comprises the following chemical components of 32.0-45.0 wt.%of Cr%, 4- 5.5 wt.% of Mo, 2.0-3.5 wt. % of Nb, 1.7-3.3 wt.% of B, C<0.03 wt.%, Si<0.05 wt.% and the balance Ni. The preparation of the coating comprises the following steps of firstly, preparing powder of the components under a water environment, an inert atmosphere or a vacuum condition by adopting a melt atomization method, wherein the particle size of the powder is 15-120 micrometers; secondly, adopting a sand blasting method to clean and physically roughen the surface of the metal components to be coated to enhance the bonding force between the coating and the component surface; and finally, the prepared alloy powder is fused to the surface of the components after sand blasting treatment by adopting a laser, plasma, flame and induction energy beam technology, and the thickness of thecoating is 0.1 mm-2 mm. The coating and the preparation method have the characteristics that the coating efficiency is remarkably improved, the applicable range is wide, and the like.

The invention relates to a method for preparing a high-performance hydrophilic modified polyacrylonitrile membrane by combining in-situ modification with a phase separation technology. The invention particularly relates to a preparation method for controlling pore size and separation performance of the polyacrylonitrile microporous membrane. The method comprises the following steps: performing in-situ reaction modification with phase inversion on polyacrylonitrile and an amino compound to form a film, wherein the chemical composition of the polymer and the performance of the membrane casting solution of the polymer can be changed by controlling the variety, the addition proportion and the reaction process parameters of the amino compound, and thereby diversified adjustment of the pore morphology, the structure, the surface composition and the separation performance of the membrane is realized, so that different application requirements are met. Compared with the prior art, the method has the advantages of simple and convenient preparation and excellent membrane performance, and can be applied to different separation occasions.