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79results about How to "Short annealing time" patented technology

Method and apparatus for rapid thermal processing and bonding of materials using RF and microwaves

A method and apparatus for rapid and selective heating of materials using variable frequency RF and microwaves. The apparatus uses variable frequency solid state electronics as a microwave power source, a novel microwave heating head to couple microwave energy to the target materials and a match-up network to tune the frequency and impedance match between the microwave source and the load. An electronic and computer measurement and control system is employed to monitor and control the microwave heating process. The method teaches the use of inductive microwave coupling for thin conductive materials such as metal film and impurity doped silicon wafers. The method also teaches the use of capacitive microwave coupling for dielectric material such as glass and ceramics. The method further teaches the use of rapid and selective heating of heterostructure for bonding and sealing of mems and integrated circuits. The method and apparatus can provide ultra-high heating speed along with ultra-high heating temperatures for rapid thermal processing of semiconductors and other materials. It also allows the use of bonding materials with high melting temperature for strong bonding and sealing of mems and IC devices. The apparatus further provides for high interconnection density of integrated circuits as connections are made without the use of solder bumps.
Owner:TIAN YONGLAI +1

High permeability grain oriented electrical steel

The present invention provides a method of producing a high permeability grain oriented electrical steel having excellent mechanical and magnetic properties. A hot band having a thickness of about 1.5 to about 4.0 mm has a chemistry comprising about 2.5 to about 4.5% silicon, about 0.1 to about 1.2% chromium, about 0.02 to about 0.08% carbon, about 0.01 to about 0.05% aluminum, up to about 0.1% sulfur, up to about 0.14% selenium, about 0.03 to about 0.15% manganese, up to about 0.2% tin, up to about 1% copper, and balance being essentially iron and residual elements, all percentages by weight. The band has a volume resistivity of at least about 45 μΩ-cm, an austenite volume fraction (γ1150° C.) of at least 20% and the strip has an isomorphic layer thickness of at least about 2% of the total thickness on at least one surface of the hot processed band. The band is rapidly cooled after the anneal prior to cold rolling at a rate of at least 30° C./second from 875-950° C. to a temperature below 400° C. The band is cold reduced in one or more stages with a final reduction of at least 80%, annealed, decarburized and coated with an annealing separator on at least one side. A final annealing provides stable secondary grain growth and a permeability measured at 796 A/m of at least 1840.
Owner:AK STEEL PROPERTIES

Sapphire crystal annealing process

The invention discloses a sapphire crystal annealing process. The sapphire crystal annealing process comprises the steps of: cooling at a high temperature stage, cooling at an intermediate temperature stage and cooling at a low temperature stage, wherein inert gases are used for cooling and protection during cooling at the low temperature stage. The sapphire crystal annealing process has the advantages that the annealing time is short by saving about 50 percent of time compared with the traditional melting processes, the energy consumption is low by reducing 10 percent of energy consumption compared with the traditional annealing processes; the production efficiency is improved, and cooling is uniform and fast to avoid stress cracking of sapphire crystal; and the product quality and the pass rate are improved.
Owner:焦作市光源晶电科技有限公司

Vacuum annealing method for tantalum tube

The invention relates to a rapid vacuum annealing method for a tantalum tube, which comprises the steps of: washing and air-drying the tantalum tube; placing the washed tantalum tube into a heat-resistant casing, and axially sending the washed tantalum tube and the heat-resistant casing to a vacuum induction annealing furnace together; adopting a three-stage vacuum system to work, and ensuring that the three-stage vacuum system pumps until the vacuum degree is 10Pa; ensuring that the inside of the vacuum induction annealing furnace is in a high vacuum state; and annealing the tantalum tube in the vacuum induction annealing furnace, namely finishing the temperature increase by heating and quick cooling in the furnace. The annealing by the method has the advantages of quick temperature increase of the tantalum tube, good product structure and performance of the tantalum tube, good mass conformance of the tantalum tube, low energy consumption, low operation cost, low investment on annealing equipment, and simple disassembly and maintenance. The method does not perform heat preservation for a long time and has low power consumption. The admissible stress of the tantalum tube is improved by 60 percent or so compared with the prior vacuum annealing furnace after the annealing is performed by the method; and under the same service strength, the method can save about 40 percent of tantalum materials and has remarkable economic benefit.
Owner:长沙南方钽铌有限责任公司

High-frequency induction annealing device and technology for regulation and control of copper-clad aluminum composite flat bus

The invention discloses a high-frequency induction annealing device and technology for regulation and control of a copper-clad aluminum composite flat bus. The high-frequency induction annealing device mainly comprises a guide roller, a driving device, a ceramic tube, temperature measuring device, an induction heating device, and an air blast cooling device. The high-frequency induction annealing device is characterized in that an induction heating power supply adopts high-frequency induction heating to improve the heating rate, shorten the heating time and control the interface layer thickness; an induction heating coil is designed to be flat similar to the cross-sectional shape of the copper-clad aluminum flat bus, so that in induction heating, the temperature distribution at different parts of the copper-clad aluminum flat bus is uniform, the heating time can be shortened, and the interface layer thickness is controlled; as the ceramic tube with a certain length is arranged, the temperature is uniform in heating, and the copper cladding layer and the aluminum core can be recrystallized synchronously; the annealed flat bus temperature can be quickly reduced to below 150 DEG C through a forced air cooling section, so that the thickness-increasing of the aluminum-copper interface is avoided; the aluminum-copper interface layer thickness is controlled within 2-3 microns.
Owner:UNIV OF SCI & TECH BEIJING

Method for annealing simplified, efficient, low-cost and high-temperature superconductive long band

The invention provides a method for annealing a simplified, efficient, low-cost and high-temperature superconductive long band. The method comprises the following steps of: placing the superconductive long band to be annealed into a manual band winding machine, manually winding the band on an annealing plate, placing the annealing plate into a vacuum box type annealing oven, and annealing under an oxygen atmosphere according to annealing processes. The method has characteristics of low cost, short annealing time, high production efficiency, high temperature controlling precision, and capability of uniformly annealing each part of the superconductive long band. Furthermore, compared with the traditional non-vacuum annealing oven, the purity of the oxygen atmosphere in the annealing oven isgreatly increased through a vacuumizing method, so that adverse effects of N2, NO, NO2, CO, CO2 and other non-oxygen impurity gas in the residual air in an annealing furnace on the performance of thesuperconductive long band under the high temperature in the annealing process are avoided. By the method, the rare earth oxide second generation high-temperature superconductive band subjected to annealing treatment under the oxygen atmosphere has excellent superconductive performance.
Owner:SHANGHAI SUPERCONDUCTOR TECH CO LTD

Quartz glass annealing furnace

The invention discloses a quartz glass annealing furnace. The annealing furnace comprises a furnace body, wherein a furnace chamber is arranged inside the furnace body; a furnace door used for sealing the furnace chamber is arranged on the furnace body; a furnace chamber inner layer, an insulating cotton layer, an insulating brick layer and a pearl stone layer are arranged in sequence from the internal to the external on both sides of the furnace chamber inside the furnace body; a furnace chamber bottom layer, an insulating brick layer and a pearl stone layer are arranged in sequence on the undersurface of the furnace chamber inside the furnace body; a furnace chamber top layer, an insulating cotton layer, an insulating brick layer and a pearl stone layer are arranged in sequence on the upper surface of the furnace chamber inside the furnace body; a plurality of grooves are formed in the opposite surfaces of the inner layer of the furnace chamber; a resistance wire is arranged in each groove respectively; two ends of the resistance wires stretch out from both sides of the furnace body to form terminals. The annealing furnace has the benefits of being convenient to use, high in heating speed, short in annealing time, high in processing efficiency, wide in application range and suitable for the annealing treatment on various quartz glass pieces, such as various quartz glass rods and quartz glass plates, and can reach the temperature required by annealing within 3 hours.
Owner:SHANGHAI USTRON QUARTZ GLASS CO LTD

Isothermal spheroidizing annealing furnace for automobile bearing ring machining

The invention discloses an isothermal spheroidizing annealing furnace for automobile bearing ring machining. The isothermal spheroidizing annealing furnace for automobile bearing ring machining comprises an annealing furnace body, wherein a fixing plate is fixedly connected between the two sides of the inner wall of the annealing furnace body, and slide blocks are slidably connected to the two sides of the bottom of the fixing plate; a spray head is fixedly connected to the bottom of each slide block; a first motor is fixedly connected to the top of the annealing furnace body through a supportframe; a thread rod is fixedly connected to the output shaft of the first motor through a shaft coupling; the bottom end of the thread rod penetrates through the annealing furnace body and extends into the annealing furnace body; and one end extending into the annealing furnace body, of the thread rod, is rotationally connected with the top of the fixing plate through a bearing. The invention relates to the technical field of automobile bearing ring machining equipment. The isothermal spheroidizing annealing furnace for automobile bearing ring machining is capable of greatly annealing a bearing ring, and short in annealing time, thereby greatly increasing the annealing efficiency and improving the quality of the bearing ring.
Owner:襄阳润欣圆锻造有限公司

Perovskite solar cell capable of being rapidly annealed in air and preparation method of perovskite solar cell

The invention discloses a perovskite solar cell capable of being rapidly annealed in air and a preparation method of the perovskite solar cell. The structure of the perovskite solar cell sequentially comprises transparent conductive glass, an electron transport layer, a perovskite light absorption layer, a passivation layer, a hole transport layer and a metal electrode layer from bottom to top. The preparation process of the perovskite light absorption layer in the air does not need to control the environment humidity, and the cost of large-scale industrialization of the perovskite solar cell is greatly reduced. Particularly, when the doping proportion of MASCN serving as a doping agent in the perovskite light absorption layer reaches the optimal, the crystallinity of the perovskite thin film is remarkably enhanced, the perovskite thin film has the characteristics of large grain size and single orientation of the (110) crystal face direction, and the efficient and stable perovskite solar cell can be prepared only by extremely short annealing time.
Owner:WUHAN UNIV

Microwave annealing method for improving electrochemistry property of hydrogen storage alloy M1(NiCoMnAlCu)5.05

The invention provides a microwave annealing method for improving electrochemical properties of a hydrogen storage alloy Ml(NiCoMnAlCu)5.05, which belongs to the technical field of hydrogen storage materials. The technical process of the method is as follows: 300-400 meshes of hydrogen storage alloy Ml(NiCoMnAlCu)5.05 powder is pressed into an alloy sheet by a sheeter at the pressure of 10-20MPa, then the alloy sheet is put into a microwave oven and is surrounded by a plurality of pieces of auxiliary heating materials, is annealed at the temperature of 300-500 DEG C; and then is cooled to the room temperature with the oven under the protection of argon gas or under vacuum condition for 6-14 minutes. The microwave annealing method is characterized by low annealing temperature, short time, low energy consumption and greatly decreasing the product cost. The hydrogen storage alloy treated by the method has smaller particle size, and the comprehensive electrochemical properties of the alloy are improved, more particularly, the activation times are greatly reduced, and the charge and discharge cycle life is significantly prolonged.
Owner:SHANGHAI UNIV
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