65 results about "Heat treated" patented technology

The invention discloses a manufacture method for a slip sheet of an air conditioner compressor, relating to the parts of air conditioner compressors. The method comprises the steps of: taking the elements in percentage by mass: C 3.2-3.8%, Si 2.0-2.6%, Mn 0.5-1.0%, Cr 0.2.-0.6%, Mo 0.1.-0.6%, V 0-0.5%, B 0-0.1%, Ti 0.04-0.15%, Nb 0-0.5%, Cu 0-0.5%, P < 0.3%, S <0.1% and the balance of Fe; and carrying out smelting, inoculating, casting, grinding, quenching and tempering heat treatment, refining, polishing and ion-sulfurizing to manufacture the slip sheet product of the air conditioner compressor. According to the product, a certain amount of carbides and flake graphite and a tempered martensite substrate with good comprehensive mechanical property are formed in a cast structure, and the manufacture method overcomes the defects of high cost and tedious machining procedures of the traditional high-speed steel or stainless steel slip sheets.

The invention relates to a casting method of an aluminum alloy wheel rim. The method comprises the following steps: firstly manufacturing an aluminum alloy ring by using a simple gravity casting mold and an aluminum ingot which is the same with material for manufacturing the aluminum alloy wheel rim, respectively pre-heating the aluminum alloy ring and a metal casting mold, putting the pre-heated aluminum alloy ring on the step of the bottom mold of a low-pressure casting mold, then closing the mold, pressing alloy-containing molten aluminum into the cavity, melting the molten aluminum and the aluminum alloy ring into a whole, wherein the aluminum alloy ring is put into previously; cooling, then demolding to obtain a blank, carrying out heat treatment; turning off the aluminum alloy ring and other excessive blanks; and reclaiming the waste materials, and manufacturing into the aluminum alloy wheel rim product. In the method, the aluminum alloy ring is firstly arranged at the original hot spot of the low-pressure casting mold as one part of the bottom die, achieves the effect equivalent to the side wall of the die in the casting process, is finally molten with the product into a whole, and is turned off by machining, thereby fundamentally eliminating the problems of shrinkage cavity, looseness and difficult demolding as a result of the wall unevenness caused by the hot spot of the cast and ensuring the quality of the product. The method is applicable to the aluminum alloy wheel rim production by any casting method.

The invention discloses a method for preparing a ZnWO4 nanorod photocatalysis material. The method includes preparing a tungstic acid solution A, a zinc chloride solution B and a sodium citrate solution C; dropwise adding the solution A and the solution C into the solution B to form a solution D; regulating potential of hydrogen (pH) of the solution D to 6-8, and uniformly stirring to obtain a solution E; adding the solution E into a microwave hydrothermal reaction kettle, performing a heating reaction, naturally cooling the solution E to the room temperature after the reaction is finished, and taking out the reaction kettle; and opening the reaction kettle, washing a product for 4-6 times by deionized water and absolute ethyl alcohol, and drying to obtain the ZnWO4 nanorod photocatalysis material. According to the method, the microwave hydrothermal method is utilized to rapidly synthesize the ZnWO4 nanorod with the photocatalysis property, the later crystallization heat treatment is not required, the obtained product is high in purity, and the shape is controllable. The ZnWO4 nanorod with the photocatalysis effect can be synthesized in 10 minutes, and the degradation rate of the prepared ZnWO4 nanorod to rhodamine B in 50-60 minutes can reach to 97%-99%.

The invention relates to a Y-type molecular sieve-containing hydrocracking catalyst carrier and a preparation method thereof. The carrier consists of a modified Y-type molecular sieve and alumina, wherein the Y-type molecular sieve is obtained by the treatment by mixed aqueous solution of an aluminum salt and an acid and by hydrothermal treatment and has the properties of a specific surface of between 750 and 850m<2>/g, a total pore volume of between 0.35 and 0.48ml/g, a relative crystallinity of between 90 and 130 percent, a cell parameter of between 2.437 and 2.445nm, a silicon to aluminum molar ratio of between 15 and 70, an infrared acidity of between 0.5 and 1.0 mmol/g, a Bronsted acid to Lewis acid ratio of more than 7.0 and a sodium oxide content of less than or equal to 0.05 weight percent. The carrier can be used in the preparation of a hydrocracking catalyst, and the obtained catalyst has the characteristics of excellent catalytic activity, high heavy naphtha selectivity, high yield, high aromatic hydrocarbon potential content of the heavy naphtha and the like.

The present invention generally relates to a laser processing systems for thermally processing substrates. The laser processing systems include a shield disposed between an energy source of the laser processing system and a substrate which is to be thermally processed. The shield includes an optically transparent window disposed adjacent to a cavity within the shield. The optically transparent window allows annealing energy to pass therethrough and to illuminate the substrate. The shield also includes one or more gas inlets and one or more gas outlets for introducing and removing a purge gas from the cavity within the shield. The purge gas is utilized to remove volatized or ablated components during thermal processing, and to provide a gas of predetermined composition, such as oxygen-free, to the thermally processed area.

A aerospace machine element product (1) to be managed comprises a plurality of assembled components (2) ((1) to (3)). Each of the plurality of components (2) ((1) to (3)) is manufactured through a material purchase process (S1), a forging process (S2), a heat treatment process (S3), a grinding process (S4), surface treatment process (S5), and inspection process (S6). The information of the processes (S1) to (S2) is recorded on an IC tag (4) together with the lot numbers of the processes. After the components (2) have been assembled in the aerospace machine element product (1), the recorded information regarding the components (2) on the IC tag (4) is recorded in a management computer system (11) so as to be related to a manufacturing number or a manufacturing lot number. Another IC tag (10) is attached to the aerospace machine element product (1) and the manufacturing number or the lot number is recorded on the IC tag (10). In addition, processing condition information about the forging, heat treatment, grinding, surface treatment processes is recorded on this IC tag (10).

The present invention relates to one kind of new drying and crushing technique, in which high temperature air flow is used to impact material to disperse the material highly and to evaporate its water instantaneously, or, to make the material hydrolyze and condensate instantaneously to form highly dispersed dry fine particles. The technique may be used in dispersing inorganic pigment, inorganic stuffing and nanometer material.

A strengthened window-type semiconductor package is provided. A substrate having an opening is mounted with at least a chip in a manner that, an active surface of the chip covers and partly exposed to the opening, and electrically connected to the substrate by bonding wires formed through the opening. An elastic non-conductive material is applied over the chip exclusive of the active surface. An upper encapsulant is formed to encapsulate the chip and the non-conductive material, and a lower encapsulant is formed to encapsulate the bonding wires and seal the opening. With provision of the non-conductive material for encapsulating the chip before forming the upper encapsulant, the chip can be prevented from cracking particularly at corner and edge positions that encounter relatively greater thermal stress during subsequent fabrication processes such as curing of the upper encapsulant and thermal cycles.

Provided are an apparatus for manufacturing a compound powder, a method of manufacturing an iron-boron compound powder by using the apparatus, a boron alloy powder mixture, a method of manufacturing the boron alloy powder mixture, a combined powder structure, a method of manufacturing the combined powder structure, a steel pipe, and a method of manufacturing the steel pipe The method of manufacturing the boron alloy powder mixture includes: preparing a mixed powder including a boron iron alloy powder and a target powder; heat-treating the mixed powder to boronize at least a portion of the target powder and de-boronize at least a portion of the boron iron alloy powder, thereby de-boronizing the boron iron alloy powder to reduce the melting point of the boron iron alloy powder.

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.

Disclosed is a simple method for manufacturing pure copper plates which does not involve cold forging or cold pressing after hot forging or hot pressing, or heat processing thereafter; also disclosed is the finely uniform pure copper plate which is obtained by said method, has low residual stress and excellent processability, and is especially suitable as a copper sputtering target material. Pure copper ingots of purity no less than 99.96 wt% are heated to 550-800 DEG C, and after hot pressing with a total press rates of 85% or more and a temperature at press completion of 500-700 DEG C, are quenched at a cooling rate of 200-1000 DEG C/min until the temperature reaches 200 DEG C or less from the aforementioned temperature at press completion.

The invention pertains to an aqueous composition containing lactoferrin, 35-70 wt % carbohydrate and/or polyol stabilizers, based on the total weight of the aqueous composition, said composition exhibiting a pH higher than 2, lower than 5. At these 5 conditions, the aqueous composition and lactoferrin contained therein may be subjected to a heat treatment without significantly affecting the physiological activity of the lactoferrin. The invention thus particularly pertains to the above aqueous composition, being heat-treated, thus containing heat-stabilized lactoferrin.

An image sensor with color filters capable of minimizing a distance through which incident light reaches photodiodes and flattening the color filters by minimizing step heights among color filters, and a method of manufacturing the same are provided. In the image sensor with the color filters, a metal is doped into an interlayer insulating SiO₂ layer opened through a photosensitive film, and the color filters of red, green, and blue are formed in the interlayer insulating SiO₂ layer through a heat treatment. In this case, a color filter array can be flattened by removing step heights among color filters generated in an conventional method in which the interlayer insulating SiO₂ layer is sequentially coated with the color filters of red, green, and blue so as to form a color filter array. In addition, the distance through which the incident light reaches the photodiodes can be reduced by forming the color filters in the interlayer insulating SiO₂ layer, thereby improving the sensitivity of the image sensor.

The invention relates to a layered lithium-rich manganese oxide positive electrode material suppressing capacity/voltage attenuation during a circulation process effectively and a preparation method therefor and an application thereof. The preparation method of the layered lithium-rich manganese oxide positive electrode material comprises the following steps of: during a preparation process of a precursor of the layered lithium-rich manganese oxide positive electrode material of a lithium ion battery, adding the raw material precursor of LiNiO2; and performing high temperature heat treatment to obtain a layered lithium-rich manganese oxide composite positive electrode material. The Ni element in the layered lithium-rich manganese oxide positive electrode material can effectively suppress the migration of transitional metal elements during the circulation of the layered lithium-rich manganese positive electrode material and suppress the formation of a spinel phase, thereby effectively suppressing the capacity/voltage attenuation during the circulation process. The positive electrode and the lithium ion battery that use the material belong to the technical field of energy materials and energy conversion. The material used as the positive electrode material of the lithium ion battery has the advantages of high energy density, cycling stability, and good rate capability.

The invention discloses a silicon carbide foamed ceramic, and a liquid metal filter produced therefrom. The silicon carbide foamed ceramic is produced through the following steps: performing a hydrosilylation reaction on polycarbosilane and vinyl group-containing silane to synthesize thermosetting polycarbosilane, performing impregnation by using organic foam as a template to obtain an organic foam preform containing the thermosetting polycarbosilane, performing heat treatment on the foam preform to achieve solvent removal and polycarbosilane cross-linking and solidifying, and finally carryingout high-temperature pyrolysis to obtain the silicon carbide foamed ceramic. The silicon carbide foamed ceramic has characteristics of high strength, excellent temperature resistance, excellent thermal shock resistance and excellent heat conduction performance, and has great application values in the filtration of molten metal.

The invention discloses a method for reducing unevenness of composite stainless steel plates in manufacturing composite steel plates. The method is characterized in that a plurality of composite stainless steel plates are stacked up with support members among the composite stainless steel plates, needle punched cotton is filled on the upside and the underside of the support members, base plates of the composite stainless steel plates face down, the support members for supporting the composite stainless steel plates move inwards, edges of the composite stainless steel plates are sagged by heat treatment at the temperature of 800-1070 DEG C by virtue of dead weight of the composite stainless steel plates, and the edges of the composite stainless steel plates upwarp for prespringing after being taking out from a heat treatment furnace and cooled, thus reducing transverse unevenness after the heat treatment. The distance from the outer side edge of a support member to the long edge of a composite stainless steel plate is 300-400mm. The method reduces the unevenness of the heat treated composite stainless steel plates, flattening is easy, and the appearance quality is easy to meet technical indexes and user requirements.

The invention discloses a preparation method of an anti-wrinkle battery diaphragm, a battery diaphragm and a battery. The preparation method of the anti-wrinkle battery diaphragm comprises a casting step, a heat treatment step, a stretching step and an internal stress release step. The internal stress release step comprises the sub-steps of standing the whole roll of the diaphragm wound after stretching to release the internal stress, and putting the whole roll of the diaphragm in an oven to release the internal stress again after the standing so as to finally obtain the anti-wrinkle battery diaphragm, wherein the temperature of the oven is 40-120 DEG C, and the treatment time is 4-12 hours. The preparation method of the anti-wrinkle battery diaphragm creatively introduces the internal stress release step into the existing process production, releases the internal stress through standing and re-baking, reduces the deformation of the diaphragm in an electrolyte, reduces wrinkles of thediaphragm after liquid injection, improves the smoothness of the battery and also reduces the adverse effects caused by the wrinkles to the battery, thereby laying a foundation for the preparation ofthe high-quality battery diaphragm and battery.

The invention relates to the technical field of welding, in particular to an argon arc welding surfacing process for a cobalt-free material ERFeCr-A5, comprising the following steps of: (1) preparing and cleaning before welding: preheating a workpiece to 100-250 DEG C; (2) welding: carrying out argon arc welding, wherein the welding current is direct current, the polarity is anode, the current range is 190-210A, the protective gas is argon gas, the flow rate of the argon gas is 11-15L/min, and the welding speed is 9-11cm/min; and (3) postheat treatment: preserving the heat of the workpiece at 100-250 DEG C for more than 4 hours. The invention aims to provide a reasonable argon arc welding surfacing process for the cobalt-free material ERFeCr-A5 to meet the requirement of a production process of a cobalt-free hard alloy surfacing layer on a sealing surface of a nuclear safety class valve.

The invention discloses a socket head cap screw processing technology. The socket head cap screw processing technology is characterized by mainly comprising the following steps: (1) head beating; (2) forced bundling: placing a workpiece obtained in the step (1) in a first station die and forcedly bundling to obtain a threaded rod part with a shaft shoulder; (3) pre-upsetting: carrying out head pre-upsetting treatment on the workpiece obtained in the step (2) through a second station die; (4) re-upsetting and internal and external chamfering: carrying out head re-upsetting treatment on the workpiece obtained in the step (3) through a third station die; (5) inner hexagon hole punching and forming: punching an inner hexagon hole in the workpiece obtained in the step (4) through a fourth station die and forming; (6) thread rolling: processing threads on the threaded rod part by using a thread rolling machine; and (7) heat treatment. The invention aims to provide a hexagon socket head shoulder screw manufacturing technology which is convenient to process and high in production efficiency and can guarantee high-precision standard requirements of the product.

The invention relates to the field of steel rail materials, in particular to a steel rail for a high-speed railway and a manufacturing method thereof. According to the steel rail for the high-speed railway, based on the total weight of a steel billet of the steel rail for the high-speed railway, the steel billet comprises 0.40-0.60% of C, 0.15-0.35% of Si, 0.75-0.95% of Mn, and the balance Fe andinevitable impurities. The manufacturing method comprises the following steps: rolling the steel billet subjected to heat preservation treatment to obtain a waste heat steel rail, and carrying out accelerated cooling heat treatment on the head part of the waste heat steel rail, specifically, the cooling start temperature of accelerated cooling heat treatment is higher than 800 DEG C, the cooling speed is controlled to be 3-5 DEG C/s, accelerated cooling is stopped when the temperature is reduced to 390-410 DEG C, and then the steel rail is air-cooled to a room temperature. The steel rail has excellent comprehensive wear performance.

The invention discloses a sealing heat treatment device, a manipulator device and a process for hardening a basal plate, wherein the heat treatment device comprises a loading layer which can place basal plates in multi-layer, a heater and a frame for fixing the loading layer and the heater, wherein the left side, the right side and the bottom of the loading layer are provided with metal clips, the frame is provided with controllable doors corresponding to each loading layer, and the heater is arranged on the bottom of the frame, wherein the controllable doors are arranged on the top end of the frame, and the basal plates and the loading layer are vertically arranged in the frame. The sealing heat treatment device, the manipulator device and the process for hardening the basal plate which are provided by the invention can load heated objects with high intensity, and are convenient for the large-scale of the heat treatment device and not reducing heat treatment efficiency.

The invention discloses a heat treatment process for a powder part, which is a process for performing high-frequency heat treatment on the powder part. The process comprises the following steps of: 1), preheating: preheating the powder part; 2) air cooling: naturally cooling the powder part for 0.1-1 second in the air; 3) heating: heating the powder part to 800-900 DEG C; 4) air cooling: naturally cooling the powder part for 0.1-2 seconds in the air; and 5) cooling: putting the powder part in quenching liquid to cool for 3-5 seconds. According to precious experience obtained from repeated experiments, the temperature difference inside and outside the powder part in the heating process is reduced through adding the steps of air cooling so as to reduce the possibility of occurrence of cracks, and the control temperature and the keeping time in each step are compared through repeated experiment, so that the optimal effect is achieved. The heat treatment process for the powder part is the improvement based on the conventional equipment and process, and the heat treatment process has the advantages of simplicity, easiness for operation, high pass percentage and the like.