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151results about How to "Addressing inhomogeneity" patented technology

Improvement method for titanium alloy laser 3D printing

The invention discloses an improvement method for titanium alloy laser 3D printing and relates to an improvement method for laser 3D printing. The improvement method for titanium alloy laser 3D printing solves the problems that titanium alloy and components prepared through laser 3D printing at present are low in strength level and heat resistant temperature, the metallographic structure is thick and big and not even, the metallographic structure grows to be big in the subsequent heat treatment modification process, the technological parameter selectable range in subsequent heat treatment is narrow, the mechanical property improvement is limited, and the plasticity level of the alloy and the components is low. The improvement method includes the steps that firstly, titanium or titanium alloy powder is evenly mixed with improved raw material powder in a ball milling mode; secondly, laser 3D printing is conducted. The metallographic structure of a laser 3D titanium metal product prepared through the mode of execution is thin and small, a subsequent heat treatment window can be greatly expanded, a balanced structure formed by high-temperature annealing can be achieved, long-time solution strengthening processing or annealing processing can be conducted, the even metallographic structure is obtained, and the mechanical performance of the metallographic structure is greatly improved.
Owner:HARBIN INST OF TECH

A preparation method for high-fiber recombinant asparagus chips

The present invention discloses a preparation method for high-fiber recombinant asparagus chips, and belongs to the deep processing field of fruits and vegetables. The asparagus chips use discarded scraps of old stems and old roots from asparagus production enterprises as raw materials, and are prepared by the following steps: pre-treating the raw materials, blanching the materials in hot water, preserving color, conducting beating, mixing the materials with adjuvant materials, cooking the mixture for a short time, placing the mixture on plates, drying the mixture under vacuum by two section-type microwave to a moisture content of 10% -15%, drying the mixture by short- and medium-wave infrared method under vacuum to a moisture content below 5%, and packaging the mixture to obtain the end products. The dietary fiber content of the asparagus chips is 8.35% - 10.27%, and every 100g of the chips contains flavonoids 12.73-16.86 mg, polysaccharide 9.34-11.28 mg. The preservation rate of chlorophyll is 70% to 75% after processing, and the chip breaking force is 1123-1443 g. The preparation method provides a novel method for taking full advantage of asparagus scraps, and the microwave vacuum drying and the short- and medium-wave infrared vacuum drying have advantages of quick drying, low temperature and higher nutrient retention rate, etc. The asparagus chips are high in cellulose content, rich in flavonoids, polysaccharide and other active substances, crispy and delicious in taste and high in nutritional value. Therefore, the asparagus chips are leisure crisps for people of all ages.
Owner:JIANGNAN UNIV +1

Wind power, photovoltaic power, stored energy and wave energy comprehensive utilization power generation device for ship

The invention provides a wind power, photovoltaic power, stored energy and wave energy comprehensive utilization power generation device for a ship. The comprehensive utilization power generation device comprises a ship photovoltaic power generation system, a ship wind power generation system, a ship wave energy power generation system, a ship lithium battery energy storage system, a direct current grid-connected system, an inverter system and an alternating current grid-connected system. The ship photovoltaic power generation system, the ship wind power generation system, the ship wave energy power generation system and the ship lithium battery energy storage system are all connected to the input end of the direct current grid-connected system in parallel, and the output end of the direct current grid-connected system is connected with the alternating current grid-connected system through the inverter system. The comprehensive utilization power generation device for the ship has the advantages that wind energy, solar energy, wave energy and storage battery stored energy are arranged through the systematized and integrated design, so that the power generation device has an important value on achieving ship energy diversification, energy saving and emission reduction and improving the competitiveness of the ship.
Owner:达器船用推进器(江苏)有限公司

Preparation method of water-heated carbon cladding lithium iron phosphate

The invention discloses a preparation method of water-heated carbon cladding lithium iron phosphate, aiming to provide a preparation method of water-heated carbon cladding lithium iron phosphate, which can overcome the deficiencies of nonuniform and loose cladding and the like of the traditional carbon cladding method. In order to solve the problem, the adopted technical scheme comprises the following steps of: Step 1. mixing lithium iron phosphate powder and organic solution according to the mass ratio of (10-30):100, adding dispersing agent, and carrying out ultrasonic stirring for certain time to obtain well dispersed suspension; Step 2. transferring the well dispersed suspension to a reaction kettle and making the well dispersed suspension react at the temperature of 120 to 300 DEG C for 3 to 10 hours; Step 3. after reaction, cooling the material to the room temperature and then filtering, and washing the material by water and ethanol in sequence; and Step 4. drying the washed material in a vacuum or inert environment at the temperature of 80 to 150 DEG C for 3 to 6 hours to obtain the water-heated carbon cladding lithium iron phosphate powder material. The water-heated carbon cladding lithium iron phosphate prepared by the preparation method has the advantages of uniform and compact cladding, long service life and the like.
Owner:ZHEJIANG RICHPOWER TECH

MEMS micro array structure processing method based on micro-electroplating

The invention discloses a MEMS micro array structure processing method based on micro-electroplating, and more specifically relates to a mask preparation method via semiconducting material deep etching processing, and belongs to the technical field of semiconducting material processing. A SiC material is taken as an example. The MEMS micro array structure processing method comprises following steps: SiC substrate preparation; photoetching pattern forming; seed layer preparation via magnetron sputtering; secondary photoetching pattern forming; preparation of an electroplate liquid; and preparation of metal layers via electroplating. A electroplate liquid component is optimized, micro electroplating conditions are modified, adhesive force of a coated metal with a substrate is increased, uniformity and thickness of the coated metal are increased, and a prepared metal coating is capable of satisfying requirements of SiC deep etching processing of a mask layer, and expanding applications of silicon carbide in related device preparation via a novel mask structure. The MEMS micro array structure processing method is capable of providing technical supports for applications of SiC pressure sensors at severe environments (high temperature, high pressure, strong corrosion, and strong radiation).
Owner:SHANGHAI NORMAL UNIVERSITY

Inner container of refrigeration equipment and preparation method thereof

The invention discloses an inner container of refrigeration equipment and a preparation method thereof. The inner container of the refrigeration equipment is formed by an HIPS (high impact polystyrene) three-layer composite board, the HIPS three-layer composite board comprises a surface layer, a basic layer and a bottom layer, wherein the surface layer is composed of a surface layer HIPS, and the surface layer HIPS is selected from one or more types of natural color HIPS, tinction HIPS and modification extrusion grade HIPS; and the basic layer comprises the natural color extrusion grade HIPS and a feeding material, and the bottom layer is composed of a resistance foaming agent erosion HIPS. According to the inner container of the refrigeration equipment provided by the embodiment of the invention, the HIPS three-layer composite board is adopted to shape, and the surface layer, the basic layer and the bottom layer of the HIPS three-layer composite board are all made of HIPS materials; the different HIPS materials after screening have good consistency, and can be mutually mixed; and the appearance and processing behaviour of the board can not be obviously influenced, the intensity of the board is improved, and the cracking risk is reduced.
Owner:HEFEI MIDEA REFRIGERATOR CO LTD

Finish forging die for forging aluminum alloy wheel

A finish forging die for forging an aluminum alloy wheel comprises an upper die plate and a lower die plate. A lower die is fixed above the lower die plate. An upper die is fixed below the upper die plate. The upper die comprises an upper die core, and the upper die core is sleeved with an upper die sleeve. A circle of notch is formed in the outer wall of the upper portion of the lower die. A flash reserving cavity is formed between the inner wall of the upper die sleeve and the notch of the lower die. A lower ejector rod is arranged at the center of the lower die. An upper ejector rod is arranged at the center of the upper die core. The problems that iron materials are not even and a die is not in place when the quantity of materials is large are solved through the flash reserving cavity formed between the inner wall of the upper die sleeve and the notch of the lower die; a workpiece can be pressed on a lower die core through the upper ejector rod arranged right at the center of the upper die core so that the die can be released, and damage caused when the workpiece collides with the die is avoided; the workpiece is ejected out of the lower die core through the lower ejector rod arranged right at the center of the lower die core, and therefore the forging process is achieved; compared with a traditional die, the finish forging die has the advantages of being free of die holding, easy to release and not prone to strain.
Owner:连云港宝石精密重工科技有限公司

Magnetic control arc ion plating composite depositing process and magnetic control arc ion plating composite depositing device

The invention belongs to the field of surface modification of materials, and particularly relates to a magnetic control arc ion plating composite depositing process and a magnetic control arc ion plating composite depositing device for controlling the movement velocity of a cathode spot, restraining the transmission of plasma, enhancing the deposition rate and deposition uniformity of a thin film, reducing the spraying of large granules positioned on the surface of a target material and enhancing the etching uniformity of the target material. The arc ion plating device is provided with two magnetic field generation devices, one is arranged behind the target material, and the other one is arranged at the outer side of a plasma transmission channel; thin film deposition is accessorily carried out on the surface of a base body through a coupling magnetic field generated by the two magnetic field generation devices. The magnetic control arc ion plating composite depositing process disclosed by the invention can reduce the spraying of the large granules positioned on the surface of the target material and the quantity of the large granules contained in the thin film through the coupling magnetic field generated by the two coupled magnetic field generation devices, thereby solving the problem of nonuniformity of the plasma on a transmission space in the traditional process, enhancing the utilization ratio of the plasma, enhancing the deposition rate of the thin film and the thickness uniformity of the thin film and providing the effective guarantee for preparing various high-property thin films.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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