143results about How to "Guaranteed to melt" patented technology

The invention provides a method for the welding of steels like 10Cr9Mo1VNb and 1Cr18Ni9, which controls the temperature between 150-200deg.C before welding at the layer. With the back welding current being 115A/85A(peak/base), welding speed 2-3cm/min, thickness no less than 3mm, filling welding current 150A/20A (peak/base), welding speed 2-3cm/min, width of the welding channel being 2-3 times of the solder wire. It has smaller welding depth, reasonable control of the fuse ratio and chemical effusion.

The invention discloses oxide dispersion strengthening low activity ferrite/martensite steel and a smelting technology and a smelting method of the oxide dispersion strengthening low activity ferrite/martensite steel, and belongs to the technical field of special steel metallurgy. The oxide dispersion strengthening low activity ferrite/martensite steel comprises raw materials including, by mass percent, 8.9%-9.1% of electrolytic chromium, 0.4%-0.5% of electrolytic manganese, 0.05%-0.08% of high-purity silicon, 0.08%-0.12% of high-purity graphite, 1.4%-1.6% of metal tungsten, 0.1% of metal tantalum, 0.18%-0.22% of metal vanadium, 0.1%-0.25% of sponge titanium, 0.2%-0.5% of high-purity rare earth yttrium, 1% of oxide scales and the balance high-purity low-sulfur low-phosphorus pig iron. A preparing method of the oxide dispersion strengthening low activity ferrite/martensite steel comprises material preparing, vacuum induction smelting, casting, forging and electroslag remelting processes, ODS-RAFM is prepared, and the large-specification ODS steel high in density, uniform in component, little in energy consumption, high in purity, stable in smelting method and capable of meeting the need of large nuclear power equipment is achieved.

The invention discloses a method for continuously predicting carbon content of a converter molten pool, which comprises data acquisition, raw material control, operation control and technical process and specifically comprises the following steps of: in the data acquisition, detecting converter gas flow by using a converter gas flow meter, transmitting all detection information to a computer through a data communication system, and analyzing and calculating the detection information through the following two mathematical models w[C]=0.1*(sigma Cori-sigma Cde)/ Wm (1); in the raw material control, controlling a waste steel ratio to be 8 to 13 percent, and controlling the weight percentage of light waste steel and heavy waste steel to be 14 to 70 percent; in the operation control, holding a fixed gun position and a fixed smoke hood in 2 to 3 minutes before finishing blowing; and in the technical process, ensuring that the carbon content of the molten pool meets the formula (1) when the oxygen blowing amount accounts for less than or equal to 75 percent of the total oxygen blowing amount and the carbon content of the molten pool meets the formula (2) when the oxygen blowing amount accounts for over 75 percent of the total oxygen blowing amount. The method fulfills the purpose of continuously predicting the carbon content of the converter molten pool by combining the mathematical models and the technical process.

The invention discloses bamboo charcoal profiled fiber with good product quality and low production cost, and a preparation method thereof. The fiber comprises the following components in percentage by weight: 94-99 percent of melt-spun slices, 1-6 percent of bamboo charcoal fine particles, 0.05-0.5 percent of surfactant and 0.1-1 percent of antioxidant, wherein the melt-spun slices are polyester, polyamide, polypropylene, polyethylene and modified polymers of polyester, polyamide, polypropylene and polyethylene; and the bamboo charcoal fine particles are black bamboo charcoal or white bamboo charcoal with the particle sizes of less than 2 mum. The preparation method comprises the following steps of: (1) preparing the bamboo charcoal fine particles according to a certain proportion, adding the surfactant and the antioxidant into a double-screw machine in a mixed conveying way, and directly putting the dried melt-spun slices into the hybrid double-screw machine; (2) melting and extruding the melt-spun slices in the double-screw machine, uniformly mixing the melt-spun slices with the bamboo charcoal fine particles and an aid, and conveying the mixture into a spinning box for direct spinning, by means of connection of a flange bent pipe; (3) spinning a blend melt with a spinning component from a spinneret plate, cooling, blowing and winding to obtain bamboo charcoal profiled nascent fibers; and (4) performing stretching twice and heat setting according to a continuous yarn or short yarn post-processing procedure. The invention is suitable for the bamboo charcoal profiled fiber and preparation thereof.

The invention discloses a converter smelting process with low lime consumption. The process comprises the steps that part of final slag is reserved according to the content of P2O5 in converter slag before converter tapping; after tapping, a deoxidizer is added according to the FeO content in the slag to reduce the oxidizability of the slag; all light-burned dolomite required in the dephosphorization period is added, slag splashing furnace protection operation is carried out, scrap steel is added firstly, and all lime required in the dephosphorization period is added; molten iron is added after the lime is added, a deoxidizing gun is ignited, and return ore or ore is added to adjust slag components after ignition; after the dephosphorization time, the carbon content and the temperature reach the requirements, inverse dephosphorization slag operation is carried out; after slag pouring is finished, the deoxidizing gun is ignited for the second time, and the feeding amount is controlled according to the alkalinity requirement; and oxygen supply is stopped when the carbon and the temperature meet the requirements, and part of the final slag is reserved according to the mass percentagecontent of P2O5 in the final slag for next smelting in the furnace. Lime consumption is reduced, the converter slag amount and the steel material consumption are reduced, and the problems of phosphorus enrichment, phosphorus return and dry dedusting explosion release in the slag are avoided.

The invention discloses a preparation method of a Ti2AlNb alloy material. The method comprises the steps of 1, preparing a Ti2AlNb alloy ingot through vacuum self-consumption electric arc melting, kish furnace smelting and vacuum self-consumption electric arc melting; 2, conducting primary homogenization treatment on the Ti2AlNb alloy ingot; and 3, wrapping the Ti2AlNb alloy ingot with asbestos cloth, then conducting heat-preservation heat treatment, and then sequentially conducting cogging forging, improved forging and finished product forging, so that the Ti2AlNb alloy material is finally obtained. The preparation method of the Ti2AlNb alloy material is simple in preparation process and reasonable in process design; an alloy is uniform in structure and stable in performance; the alloy ingot can be effectively refined, purified and homogenized through a smelting method; through the high-quality ingot, smooth implementation of subsequent hot working is guaranteed; by means of homogenization treatment, uniformity of alloy elements can be further improved through element diffusion; and wrapping treatment is conducted with the asbestos cloth, the temperature of the material can be effectively prevented from being lowered in the whole forging process, and large-deformation-amount forging for one heating time is achieved.

The invention discloses a thermal barrier coating preparation method with the columnar crystals coating to solve the problem of non-crystal coating and low anti-thermal in normal plasma spraying for the LaTi2Al9O19 ceramic material. It changes the distance and the technique data of the tack coat and ceramic powder channel in the normal plasma spraying process, so the thermal barrier coating of the LaTi2Al9O19 with the stable energetic and the columnar crystal structure. The thermal isolation temperature is 130deg.C-300deg.C and improves the strain limit and anti-thermal character, the hot circle life can reach above 1500 times and improves by 4 times.

The invention discloses a method for preparing magnetic material of rare-earth permanent magnet ferrite; a ferrite pre-burning material including strontium or barium is used as the main material to prepare the magnetic material of rare-earth permanent magnet ferrite with high performance after the adding of auxiliary agent, the wet milling process, the magnetic forming process and the high-temperature sintering; the invention uses the extracted carbonate mixture having rare-earth concentrate powder with rich lanthanum or having lanthanum rare-earth concentrate powder to replace the conventional pure rare-earth oxide or pure rare-earth hydroxide, and improves the properties of the ferrite magnet by the lanthanum element in the rare-earth; cerium replaces the cobaltous oxide to improve the coercive intensity; the substances such as iron, silicon, calcium and aluminium partially replace the non-rare-earth oxide auxiliary agent, which must be added; the permanent magnet ferrite prepared by the following method of the invention comprises the following magnetic properties: Br is greater than or equal to 390 mT; Hcj is greater than or equal to 250 kA/m, and BH(MAX) is greater than or equal to 25 kj/m3. The invention can make full use of rich lanthanum rare-earth in China, thereby reducing the production cost of ferrite.

The invention relates to a method for sealing an edge of a plastic cellular sandwich board and an apparatus thereof. According to the invention, an edge sealing zone is arranged outside the contour of a product, in the edge sealing zone, a high-temperature part is inserted between an upper skin and a lower skin of the edge, honeycomb is removed through fusing, the upper skin and the lower skin are softened, and then the upper skin and the lower skin are turned to a center, so that edge sealing of the product is realized. According to the edge sealing method, the product edge is full and firm, the product edge intensity is enhanced, the problem of edge enclosing of a PPHC material is solved, and an application of the PPHC material on a spare wheel cover plate is promoted.

The invention discloses a method for controlling the content of nitrogen in oriented silicon steel. The method comprises the following steps: placing pure iron used as the raw material and carbon in a crucible, placing accessories in a vacuum hopper according to the alloy raw material proportion and the charging sequence, wherein the alloy raw material proportion is calculated according to the content of each element in the oriented silicon steel; heating the furnace charge to melt, and refining the molten steel; adding aluminum to deoxidize after refinement, then adding metallic silicon or an alloy containing the nonvolatile elements of the oriented silicon steel to perform alloying; deciding whether to inject argon or nitrogen according to the content of nitrogen in the oriented siliconsteel; adding nitrogen-containing ferromanganese to adjust nitrogen under the protective atmosphere, adding other alloy raw materials to meet the target contents; and performing the vacuum charged pouring of molten steel at a proper molten steel temperature. Therefore, the narrow component range control of nitrogen element in the oriented silicon steel can be realized by adopting the method for controlling the content of nitrogen in the oriented silicon steel.

The invention discloses a conformal cooling channel with hydrophobic effect and a production method thereof. The method comprises the following steps: (1) preparing hydrophobic coating powder materials; (2) designing a three-dimensional model with a conformal cooling channel die, and performing slicing treatment; (3) placing die metal powder and hydrophobic coating powder; (4) carrying out shapingtreatment, specifically comprising first performing shaping on the die metal powder by using an SLM (selective laser melting) technology, then performing shaping on the hydrophobic coating powder byusing an SLS technology to form a powder leveling layer; (5) repeating step (4) until the whole conformal cooling channel is completed; (6) taking off the shaped die. Through improving and optimizingthe key material types of inner wall hydrophobic coating and corresponding specific shaping technology, the conformal cooling channel with hydrophobic coating can be obtained, and the technical problems that the cooling efficiency of a die cooling system is low, the conformal cooling channel is easy to block, the surface metal is easy to corrode and the like are solved.

The invention discloses a manufacturing method for a niobium-containing Ti3Al alloy cast ingot. A pure titanium cast ingot is manufactured firstly, then the pure titanium cast ingot is machined into a shining titanium bar, the obtained shining titanium bar, a shining niobium bar and a shining aluminum bar are welded into a consumable electrode in a spliced mode, the consumable electrode is subjected to three times of vacuum self-consuming electric arc melting, and the niobium-containing Ti3Al alloy cast ingot is obtained. The consumable electrode is manufactured in the bar splice welding mode, and manufacturing of intermediate alloy and the step of electrode block pressing are omitted, so that the process is simplified. Meanwhile, due to the fact that the consumable electrode is manufactured by welding the titanium bar, the aluminum bar and the niobium bar in a splicing mode, the effect that the contents of all elements on the same melting cross section in the melting process are consistent can be ensured; and due to the fact that the titanium bar, the aluminum bar and the niobium bar are all compact materials, the defects of nonuniform chemical components caused by different local melting speeds or impurity inclusion caused by block falling and the like are avoided. The alloy cast ingot manufactured through the method is uniform in component, and the defects that in the prior art, the niobium element is segregated severely, alloy components are inaccurate and the uniformity is poor are overcome.

The invention discloses a high-speed 3D printer with a cooling system. The high-speed 3D printer comprises two core systems including the cooling system and a rapid wire discharging system, wherein the cooling system is connected with the rapid line discharging system; and the rapid three-dimensional printing can be realized. The high-speed 3D printer has the contents that by utilizing the coolingsystem, a printed material can be rapidly cooled and condensed and can be combined with preceding printed materials; an extrusion mechanism adopts a spiral wire feeding mechanism, so that the wire feeding speed and uniformity are guaranteed; and meanwhile, the heating temperature of a spray head is relatively high, the fluidity of the material is improved, and the extrusion speed of the materialis further increased. Finally, the printing efficiency is improved, and the operation efficiency of the printer is liberated.

The invention relates to hollowed-out Jun procelian, comprising two parts, i.e., base procelian and glazed porcelain, wherein a plurality of through holes are formed in the outer surface of the base procelian; the pre-separation between pore-making granules and a green body is realized by means of microwave treatment on the pore-making granules evenly doped in the base procelian green body through the through holes; then, the green body is subjected to high-temperature sintering, so that the pore-making granules are melted, and the hollowed-out Jun procelian is obtained. After the hollowed-out Jun procelian and a preparation technology thereof, provided by the invention, are adopted, the preparation of the hollowed-out Jun procelian which is good in finished product hardness, high in molding rate and low in loss on ignition can be realized by means of a base procelian raw material formula, a base procelian firing method and improvement for a glaze formula and a glaze firing technology.

The invention discloses a method for producing nickel-based steel from high-phosphorus molten iron, and relates to the technical field of steel smelting. By adopting converter smelting, the P contentof used molten iron is 0.130% to 0.150%, by adopting a method of slag retention at the early stage and double slag at the later stage, the final smelting temperature is 1580-1620 DEG C, in the middleand later periods of smelting, the bottom stirring flow is 350-400 NL/min, the final slag alkalinity is 4.0, the final slag control amount is 10-12 tons, the converter decarburization rate is larger than or equal to 99%, and the dephosphorization rate is larger than or equal to 96%; and through LF refining, RH vacuum treatment, arc continuous casting machine pouring, by adopting TMCP rolling and ACC water cooling to 300 +/-20 DEG C, air cooling is performed to room temperature, a steel plate is heated to 550 +/-10 DEG C, tempering is performed for 3*h min, and air cooling is performed to roomtemperature. The converter process is optimized, a product is conveyed to a heating furnace to be heated after vacuum treatment and casting of an arc-shaped continuous casting machine, TMCP rolling and ACC water cooling are adopted, and after tempering treatment, performance detection is qualified.

The invention discloses a laser annealing device and a method. The device comprises a laser source, a light path part, a light path monitoring part and a motion part, wherein the laser source comprises two P-pole linear polarization laser devices; and laser beams emitted by the two P-pole linear polarization laser devices pass through the light path part, are treated by a beam splitting part, and then are emitted to the surface of a silicon wafer of the motion part at near brewster angles. Compared with the prior art, the laser annealing device adopts the two P-pole linear polarization laser devices, light emitted from a laser device is converted into S-pole polarized light, the S-pole polarized light is synthesized and then passes through a light path treatment part, then two light beams are separated, the S-pole light beam is reduced to P-pole light, and finally the two light beams are emitted at brewster angles. Therefore, the two laser beams can be emitted at the brewster angles, the light path treatment part is not too complicated, and the utilization efficiency of laser energy is improved greatly.

The invention relates to a bottle glass formula, wherein the bottle glass comprises, by weight, 69.5-72.5% of SiO2, 1.9-3.1% of AlO3, 10.2-10.6% of CaO, 2.0-2.5% of MgO, 12.8-13.0% of Na2O, 0.3-0.7% of K2O, less than or equal to 0.3% of Fe2O3, and less than or equal to 0.3+/-0.1%. According to the bottle glass formula of the present invention, in the high calcium formula, the total content of CaO+MgO is increased, the Na2O amount is reduced, and the appropriate MgO content is maintained, such that the material performance of the glass is adjusted, the molding performance of the glass is improved, and the relative machine speed is increased and the water resistance (HGB) of the glass product is substantially increased in the case of the same mold cooling air flow. In addition, the soda ash consumption is reduced so as to easily achieve energy saving and reduce cost.

The invention relates to a method for diluting and eliminating center line segregation of a continuous casting slab by utilizing an additive material. The method comprises the following steps: acquiring the parameters of production working conditions; determining supply speed va, the thickness d of the additive material and the width w of the additive material, wherein w is larger than d; calculating a segregation index of the tail end of a liquid core based on a standard solute concentration C<standard> to obtain a solute concentration Coi, and adopting an inverse method to obtain a solute concentration Ca of the additive material; obtaining a selection concentration C<selection> according to a formula that C<selection> is larger than or equal to Ca and smaller than C<standard>; selectingand/or manufacturing the additive material according to the thickness d of the additive material, the width w of the additive material and the selection concentration C<selection>, and continuously conveying the additive material to the tail end of the liquid core in a vibrating manner. According to the method for diluting and eliminating center line segregation of the continuous casting slab byutilizing the additive material provided by the invention, the center line segregation is alleviated and eliminated by utilizing proportioning of alloy components, and meanwhile the additive materialcan eliminate center loosening. The additive material is completely molten after reaching the tail end of the liquid core; under a vibration effect, the molten liquid group is totally mixed with casting liquid inside the tail end of the liquid core, so two great internal quality defects about center line segregation and center loosening inside the continuous casting slab are simultaneously prevented.

The invention discloses a high-resilience insole which comprises a PU insole body and elastic particles. The elastic particles are embedded in the PU insole body, and the density of the elastic particles ranges from 0.1 g/cm<3> to 0.2 g/cm<3>.The high-resilience insole is simple in structure, and foldable while not likely to deform, and has high resilience. The invention further discloses a manufacturing method of the high-resilience insole. The manufacturing method comprises the following steps that firstly, 3-5 parts of PU by weight and a catalyst are put into a material barrel, then the mixture is heated to 40-55 DEG C, and the temperature is maintained to be constant; secondly, 1 part of elastic particles with the melting point higher than 55 DEG C by weight are added into the material barrel and then stirred evenly, and a mixture is obtained; thirdly, the mixture is injected into a mold, cooling and sizing are carried out, and the high-resilience insole is obtained. The manufacturing method is simple in processing step, low in processing cost and high in reliability, and the obtained finished product is high in yield, large in strength and resilience and high in practicability.

The invention discloses pouring molten iron and a smelting process of a natural gas powered cylinder. The pouring molten iron is used for solving the problem of bad shrinkage compensation property of the existing pouring molten iron. The pouring molten iron of natural gas powered cylinder disclosed by the invention is composed of the following components in percentage by weight: 3.55-3.65% of carbon, 2.1-2.3% of silicon, 0.5-0.6% of manganese, 0-0.06% of phosphor, 0-0.02% of sulfur, 0.15-0.25% of chromium, 0.5-0.7% of copper, 0.15-0.25% of molybdenum, 0.007-0.009% of magnesium, 0.025-0.030% of rhenium and the balance of iron. The pouring molten iron disclosed by the invention has good shrinkage compensation property, so that the quality of a casting is improved; the poured casting has high strength and good mechanical property to meet the requirements of the natural gas powered cylinder.

The invention discloses an X fluorescence determination method of potassium nitrate as a high-aluminum glass raw material, and belongs to a detection method in the field of glass manufacturing. The method sequentially comprises the following steps: fully mixing a standard sample and a sample to be detected with a mixed fluxing agent (lithium tetraborate and lithium metaborate in a ratio of 2: 1-1: 1) according to a certain dilution ratio (1: 20-1: 15), and transferring the mixture into a platinum yellow crucible; adding a release agent, and respectively melting a standard sample glass sheet and a to-be-detected sample glass sheet by using a high-temperature sample melting furnace according to a set melting time and temperature program; registering the strength and component content of the standard sample glass sheet on an X fluorescence spectrometer, and drawing a standard working curve of the components; and measuring the content of the sample to be measured by using the established standard working curve. The method is an automatic determination method which is high in analysis efficiency and scientific and reliable in analysis result.

The invention discloses a manufacturing technology for a natural aerodynamic cylinder and aims to solve the problems that a conventional cast natural aerodynamic cylinder is low in precision and intensity and has multiple casting defects. The manufacturing technology disclosed by the invention mainly comprises the working procedures of contour and sand core manufacturing, baking, molten iron smelting, vermicularizing treatment and pouring. The natural aerodynamic cylinder manufactured by the manufacturing technology has the characteristics of high contour size precision, high surface smoothness, high intensity and high mechanical property, and the manufacturing technology is particularly suitable for manufacturing of the natural aerodynamic cylinder.

The invention discloses a multielement material collaborative gasification method and system. The method comprises the steps of 1, pretreatment, wherein pretreatment is conducted on organic fluid waste, so that filter cakes are obtained; 2, drying for powder production, wherein rotational flow heat exchange is conducted between the filter cakes and heat carrying gas, and meanwhile, crushing impacttreatment is conducted on the filter cakes, so that powder waste is obtained; 3, gas-solid separation, wherein the powder waste and tail gas are separated; 4, gasification of slag, wherein collaborative gasification treatment is conducted on the powder waste and additional solid waste, so that synthesis gas and the slag are obtained; 5, aftertreatment of the synthesis gas, wherein waste heat recovery is conducted on the synthesis gas in the first place, and then purification treatment is conducted, so that purified gas and waste water are obtained; 6, aftertreatment of the slag, wherein chilling treatment is conducted on the slag, so that a glassy-state slag material is obtained; and 7, treatment of the waste water. By means of the multielement material collaborative gasification method,drying treatment can be conducted on the organic fluid waste, and the fluid-form waste is produced into a powder waste material; the powder waste material can serve as a raw material of the gasification slag; and collaborative gasification treatment of the multielement materials, namely the solid waste and the organic fluid waste, is achieved.