158results about How to "Improve the annealing effect" patented technology

A laser annealing apparatus includes: a laser beam generator for providing a stable single-pulse laser; a cyclic delay unit (300) for splitting the single-pulse laser into several pulsed lasers; an optical module for converging one or more of the pulsed lasers on a substrate (204); and a movable stage (500) for providing the substrate (204) with movement in at least one degree of freedom. A laser annealing method includes: providing a stable single-pulse laser; splitting the single-pulse laser into several pulsed lasers according to a delay requirement and an energy ratio; and irradiating a substrate (204) successively with one or more of the pulsed lasers to keep a surface temperature of the wafer around the melting point or around a needed annealing temperature for a sufficiently long time during the annealing process, thus resulting in an improvement in both the laser energy utilization efficiency and effect of the annealing process.

The invention relates to a semi-conductor lead framework production process which includes the steps of smelting, continuous casting, continuous extrusion, cogging, severe convection annealing, continuous inclination rolling, spreading-type bright annealing, finishing rolling, positioning-type edge shearing, degreasing passivation, stamping, surface processing, cutting forming and detection piece packaging. The production process is characterized in that the two work procedures of finishing rolling and positioning-type edge shearing are provided with continuous grooving procedures, when continuous grooving is carried out, precise grooving processing is carried out through a grooving machine, the rotation speed of the grooving machine is 1800-2000 r/min, the flow of cooling liquid is 45-50 L/min, and dovetail groove forming achieving through the process cannot cause strip width changes after forming, and the size of a formed semi-conductor lead framework is accurate.

The invention provides a universal nonferrous metal and stainless steel cold rolling oil composite additive and a preparation method thereof and belongs to the field of lubricating agents. According to the universal nonferrous metal and stainless steel cold rolling oil composite additive, lauryl alcohol, butyl stearate, pentaerythritol oleate and lauric acid are selected as oily agents; 2,6-di-tert-butyl-4-methylphenol is selected as an antioxidant; benzotriazole and thiadiazole derivatives are used as metal deactivators; dialkyl phosphorodithioate serves as an antiwear agent; and hydrogenated base oil serves as a solvent. The alcohol-ester type oily agents are mainly used for compounding with a little amount of acid oily agents as supplementation; a little amount of dialkyl phosphorodithioate is used as the antiwear agent to reinforce an oil film so as to improve the surface quality of a rolled stock; the service life of rolling oil is prolonged through a little amount of the antioxidant and the metal deactivators, the cyclic use frequency is increased, and rolled pieces are protected against corrosion. The universal nonferrous metal and stainless steel cold rolling oil composite additive is convenient to use, low in cost and little in dosage, and has the characteristics of high oil film strength, good antiwear and antifriction effect, high oxidation resistance and excellent annealing performance.

The invention discloses a process for manufacturing high bonding strength copper clad aluminum wire, comprising the following steps: (1) explosive welding: a baseplate, a support ring, a covering plate and explosive are sequentially overlapped from the bottom up on a foundation, wherein one of the baseplate and the covering plate is a copper plate and the other one is an aluminum plate, the explosive is ignited, the covering plate impacts the baseplate at a high speed, and the covering plate and the baseplate are integrated by welding to obtain copper-aluminum composite plate blank; and (2) the copper-aluminum composite plate blank is processed by subsequent processing procedures to obtain the copper clad aluminum wire. The process improves the interfacial bonding strength, the copper layer thickness and the electric conductivity of the copper clad aluminum wire, thereby ensuring the usage reliability thereof.

The invention relates to a spheroidized annealing process for shortening the annealing cycle of hot rolled wire rods, belongs to the technical field of metal wire annealing process. The technical scheme of the spheroidized annealing process lies in that firstly, lamellar pearlites are heated to 770-790 DEG C, heat preservation is carried out for a certain time to enable the lamellar pearlite to be fused quickly, so that the undissolved carbide particles can promote the transformation of austenite into the spheroidized microscopic structure; the temperature is lowered to 710-730 DEG C, heat preservation is performed for 4-6 hours to enable the fused cementite to gather spherically, and along with the time extension of heat preservation, the rate of spheroidization of the cementite is gradually improved, and the uniformity is gradually improved. A slow three-stage cooling manner is adopted, so that the uniformity of the spheroidized structure is improved. According to the spheroidized annealing process for shortening the annealing cycle of hot rolled wire rods, the following advantages are achieved: the annealing effect is good, the technological process is simple, the annealing cycle is short, the production efficiency is high, and the cost is low. With the adoption of the spheroidized annealing process provided by the invention, the processed wire rods of fasteners are uniform in metallographic structure, high in toughness, high in malleability, low in harness, are suitable for subsequent moulding and processing forming, and the products are low in cold-forming cracking rate.

The invention discloses a method for polycrystalline silicon ingot casting. The method comprises a first step of installation of an auxiliary heater, wherein the auxiliary heater is installed in a polycrystalline silicon ingot furnace, the auxiliary heater is a bottom heater below a crucible, and the auxiliary heater forms a six-side heating device together with a top heater and four side heaters; a second step of charging; a third step of preheating; a fourth step of melting: six-side heating melting, fifth-side heating melting and follow-up melting; a fifth step of crystal growth; a sixth step of annealing and cooling which comprise primary annealing, secondary annealing and cooling, wherein during the primary annealing, the heating temperature of the polycrystalline silicon ingot furnace is reduced to T4 and heat insulation is performed for 2-3 h, and T4=1250-1280 DEG C; during the secondary annealing, the heating temperature of the polycrystalline silicon ingot furnace is reduced to T5 and heat insulation is performed for 2-3 h, and T5=900-950 DEG C. The method is simple in steps, reasonable in design, convenient to implement and good in using effect. The six-side heating device is adopted for heating, the oxygen content of the bottom of the crucible can be effectively reduced; the annealing process is adjusted, and the quality of a finished ingot can be effectively improved.

The invention discloses a PTFE compound piston ring. The piston ring is characterized by being prepared from a PTFE compound material which is prepared from 76-85 percent of PTFE and 15-24 percent ofPI in percentage by mass. The invention further discloses a preparation method of the PTFE compound piston ring. Polyimide PI is a heat-resistant polymer material with stable aromatic heterocycle structural unit, has remarkable thermal stability, has the glass state temperature Tg of 260 DEG C or above, can endure the high temperature of 250-400 DEG C, has excellent mechanical performance, radiation resistance and solvent resistance, has good frictional wear performance in high-temperature, high/low-pressure, high-speed and other extreme environments. The hardness, impact strength and bendingstrength of the compound material can be improved after the PI is added into PTFE, the comprehensive mechanical performance can be promoted, toughness of PTFE substrate resin can be assisted due to acertain amount of PI, and the crack propagation and toughening performance of PTFE can be improved.

The invention discloses a method for evaluating the annealing effect of a large-size wound iron core. The method comprises the steps: carrying out the annealing of different types of wound iron cores,and measuring the no-load loss of the wound iron cores after annealing; deducing a resistance definition equation of a silicon steel strip in a winding direction based on the length of a winding pathand sections of the iron cores, and calculating a theoretical power value; finally comparing an experiment value and a theoretical value, and judging the annealing technical effect of the iron cores.The method can achieve the effective evaluation of the annealing effect of the iron cores, can achieve the further improvement of the existing annealing technology according to an evaluation result,facilitates the improvement of the annealing technology of the iron cores, and improves the energy-saving effect of a transformer.

The invention relates to a carbon-doped titanium sapphire crystal and its growing method and application. The growing method includes adding 1,000-10,000 ppm graphite powder in the titanium sapphire raw material, performing growth of the carbon-doped titanium sapphire crystal by Bridgman-Stockbarger method, and performing in situ annealing on the grown crystal at 1,700-1,900 DEG C. for 40-56 h; and cooling the crystal after annealing at a slow rate of 15-30 DEG C./h to room temperature. The inventive carbon-doped titanium sapphire crystal has residual infrared absorption coefficient reduced to 0.01-0.001 cm<-1> at normal temperature of 25 DEG C., quality factor FOM of more than 200, and high optical uniformity, and is applied to solid tunable laser.

The invention discloses a production process of a class 200 copper-clad aluminum electromagnetic wire, belonging to the field of copper-clad aluminum electromagnetic wires, and the technical proposalthereof comprises the following steps of: cleaning the surfaces of the aluminum wire and the copper strip to remove impurities and an oxide layer; coating the copper strip on the aluminum wire and then drawing by using a special wire drawing die; annealing the copper-clad aluminum bare wire, maintaining the annealing temperature at 300 to 400 degrees centigrade; painting the copper-clad aluminum bare wire to ensure uniform painting, placing the painted copper-clad aluminum bare wire in the film curing oven for baking, and maintaining the baking temperature at 450 to 500 degrees centigrade; lubricating the surface of the formed copper-clad aluminum electromagnetic wire to make the surface of the copper-clad aluminum electromagnetic wire smooth and uniform in thickness; and winding up the final copper-clad aluminum magnet wire, thereby solving the problem that it is difficult to select a suitable temperature in the production process of the copper-clad aluminum magnet wire, and improvingthe quality of the copper-clad aluminum magnet wire, so that the connection between copper and aluminum is tight and the toughness is good.

The invention discloses an annealing and drawing device for an oxygen-free copper tube, with high diameter-to-thickness ratio, for a mobile phone heat pipe. The annealing and drawing device comprisesa box body; a drawing die is mounted in the box body; an annealing pipe is mounted between the drawing die and the box body; a heating wire is wound around the side wall of the annealing pipe; a fixing plate is arranged on one side of the drawing die; a supporting roller is rotationally connected onto the fixing plate; a tension adjusting mechanism is arranged on one side of the supporting roller;a mounting plate is arranged on the outer side of one end, close to the tension adjusting mechanism, of the box body; the mounting plate is mounted on the ground; a supporting frame is fixed to one side of the upper end of the mounting plate; a servo motor is fixed to the upper end of the supporting frame; a rotating shaft is fixed to the end part of an output shaft of the servo motor; a windingwheel is in keyed connection onto the rotating shaft; and a supporting mechanism is arranged at one end, far from the servo motor, of the rotating shaft. Through the adoption of the structure, the oxygen-free copper tube for the mobile phone heat pipe is uniform in annealing, and uniform in drawing traction, and the production quality of a rope is improved.

The invention relates to a special annealing kiln for producing float glass. The special annealing kiln comprises a kiln body, wherein an inlet for the float glass to enter is formed in one side of the kiln body; a plurality of upper heat insulation boards are fixedly arranged inside the kiln body; the upper part of the kiln body is divided into a plurality of upper annealing regions by the upperheat insulation boards; lower heat insulation boards are arranged under the upper heat insulation boards; the lower part of the kiln body is divided into a plurality of lower annealing regions by thelower heat insulation boards; a wind screen mechanism is arranged outside the inlet; an upper cooling mechanism is arranged in each upper annealing region; a lower cooling mechanism is arranged in each lower annealing region. According to the special annealing kiln for producing the float glass, a wind curtain wall is formed by the wind screen mechanism arranged on the outer side of the inlet of the kiln body and is used for stopping external heat from entering the annealing kiln, so that the annealing effect is ensured, the operation is facilitated and the influence on continuous production of the float glass is avoided; by matching the upper cooling mechanisms with the lower cooling mechanisms, temperature difference between the side part and the middle part of the float glass is reduced, and the annealed float glass is not easy to bend.

The invention discloses an annealing process for improving mechanical property of glass. The annealing process includes the following steps that firstly, freshly formed glass is subjected to primary annealing; secondly, the glass after primary annealing is quickly cooled; thirdly, the glass after primary annealing is slowly cooled; fourthly, then the glass obtained by primary annealing is slowly heated to the optimal annealing temperature to be subjected to secondary annealing, and secondary annealing is conducted for 3 minutes by adopting the optimal temperature and for 3 minutes by adoptingthe lowest temperature; fifthly, the glass after secondary annealing is subjected to important cooling, and permanent stress is prevented from producing inside the glass; and sixthly, then the glass after important cooling is quickly cooled, and thus the finished glass is obtained. According to the annealing process for improving the mechanical property of the glass, the annealing effect of the glass is improved, the content of residual stress inside the glass after forming is decreased, meanwhile, the permanent stress after forming of the glass is reduced to the minimum, and thus the mechanical property of the glass after forming is improved, so that the glass is more stable.

The invention relates to an annealing technique of cast polycrystalline silicon, which uses a polycrystalline silicon ingot casting furnace, wherein the polycrystalline silicon ingot casting furnace comprises a heat insulation cage and a heat insulation base plate arranged below the heat insulation cage, a crucible is arranged in the heat insulation cage, and the external surface of the bottom of the crucible is provided with a graphite base plate. After the polycrystalline silicon growth step in the crucible, the height of the heat insulation cage or heat insulation base plate is lowered or enhanced to adjust the distance between the heat insulation cage and heat insulation base plate, so that the temperature in the crucible drops at the rate of 0.5-5 DEG C/minute, and the crucible bottom temperature fluctuation does not exceed 50 DEG C; and when the difference between the temperature in the crucible and the temperature of the crucible bottom is within 50 DEG C, the annealing is completed. The crucible bottom temperature is the temperature below the crucible bottom graphite protecting sheet. The technique reduces the back diffusion of impurities, greatly enhances the yield of the silicon bulk, and saves the energy consumption.

The invention discloses an aluminum wire straightening method of an enamelling machine annealing furnace and a mechanism of the enamelling machine annealing furnace. The method comprises the following step of straightening an aluminum wire in an annealing furnace body by bypassing more than two straightening wheels sequentially, thereby improving the straightness of an enamelled wire after annealing. According to the invention, the straightness of the aluminum wire can be improved effectively; the problem of naked aluminum lead surface scratch caused by poor straightness is solved; the product performance is improved; additionally, the cooling effect in the annealing working procedure is ideal, and the quality problem of instability of paint membrane continuity, breakdown voltage and the like which are troubled for a long time in the aluminum enamelling wire manufacturing industry is solved. Meanwhile, the aluminum wire straightening method of the enamelling machine annealing furnace and the mechanism of of the enamelling machine annealing furnace are simple in structure, low in cost and suitable for industrialization.

The invention discloses a polycrystalline silicon ingot casting technology. The technology comprises the following steps of 1 auxiliary heater installing, wherein an auxiliary heater is installed in a polycrystalline silicon ingot casting furnace and is a bottom heater arranged under a crucible; 2 charging; 3 preheating; 4 melting, wherein the process comprises the following steps of six-side heating melting, five-side heating melting and follow-up melting; 5 crystal growing pretreating after melting, wherein the process comprises the steps of temperature decreasing and temperature increasing; 6 crystal growing; 7 annealing and cooling, wherein after the crystal growing process in the step 6 is completed, annealing and cooling are conducted, and processed and formed polycrystalline silicon ingots are obtained. The technology is simple in step, reasonable in design, easy and convenient to achieve and good in using effect, heating is conducted by adopting a six-side heating device, and by adding the step of conducting crystal growing pretreating after melting and regulating a crystal growing process, the grain size can be effectively decreased, and the quality of the finished ingots is improved.

The invention discloses a lateral composite position guide device for a three-layer composite material. The lateral composite position guide device comprises a composite body, wherein a cavity is formed in the composite body; a wire guide nozzle is arranged on one side of the composite body, and a plurality of wire feeding rails are arranged on the other side of the composite body; a cavity penetrates through a wire guide channel of the wire guide nozzle and wire feeding channels of the wire feeding rails; a plurality of guide arrangement assemblies are arranged in the wire guide channel of the wire guide nozzle; and a composite rolling part is arranged on one side of the wire discharging end of the wire guide nozzle. The lateral composite position guide device is reasonable in design and compact in structure, can quickly enable three strips to be laterally and closely attached together, and can provide a basis for subsequent machining.

The invention provides a perovskite light absorption layer thin film, a preparation method thereof and a solar cell using the perovskite light absorption layer thin film. The preparation method comprises the steps of taking haloid acid as an additive, and preparing the perovskite light absorption layer thin film. According to the method for preparing the perovskite light absorption layer thin film, haloid acid is used as an additive, so that the annealing temperature in the preparation process of the perovskite light absorption layer thin film is greatly reduced; the preparation raw materialsare easy to obtain; the preparation process is simple; a large amount of organic solvents harmful to the environment are prevented from being used; operation under high-temperature and high-pressure or vacuum conditions is avoided; and the solar cell prepared from the perovskite light absorption layer thin film has relatively good energy conversion efficiency.

The invention puts forward an annealing system and method for welded rotors. The annealing system comprises multiple heating devices and multiple temperature measuring devices; the multiple heating devices are arranged on multiple heating zones of the welded rotors; the multiple temperature measuring devices are arranged on the multiple heating zones of the welded rotors and are connected with themultiple heating devices; and the annealing temperatures of the multiple heating zones are different. By the aid of the annealing system for the welded rotors, manual operations can be reduced, and the heating quality is stable.

The invention discloses protective gas for the annealing of metal materials. In the protective gas, mixed gas comprises 75 percent of hydrogen and 25 percent of nitrogen, and a ratio of the mixed gas containing the hydrogen and the nitrogen is appropriate; and the protective gas is easy and convenient to prepare and high in quality after annealing.

The invention discloses a martensitic stainless steel 2Cr13 wire annealing process. The process comprises the following steps of 1, putting a 2Cr13 wire coil into a heat treatment furnace, introducingprotective gas into the heat treatment furnace, then heating the heat treatment furnace to 800-820 DEG C at the heating speed of 80-100 DEG C/h, and maintaining the temperature for 6-10 hours; 2, inthe first cooling stage, cooling the heat treatment furnace to 760-780 DEG C at the cooling speed of 15-20 DEG C/h; 3, in the second cooling stage, cooling the heat treatment furnace to 500 DEG C at the cooling speed of 20-50 DEG C/h; and 4, in the third cooling stage, discharging the 2Cr13 wire coil out of the furnace and naturally cooling the 2Cr13 wire coil to the normal temperature. By means of the martensitic stainless steel 2Cr13 wire annealing process, the martensitic stainless steel 2Cr13 wire can be uniform in annealing performance, and the wire obtained after annealing treatment is uniform in metallographic structure, high in ductility, good in plasticity, low in hardness, lower in tensile strength, better in drawing machining performance and suitable for subsequent plastic machining forming.

The invention discloses a bright annealing unit applied to stainless steel strips. The bright annealing unit comprises a base, wherein a plurality of traveling mechanisms are mounted at the bottom endof the base; braking mechanisms are mounted on two sides of the bottom of the base; a support device is arranged on the upper end of the base; a control panel is mounted on the support device; an uncoiling machine, a heating device, a dragging device, a cooling device and a coiling machine are successively arranged at the upper end of the support device from left to right; an alcohol-based combustion device is mounted at the bottom end of the heating device; the input end of the alcohol-based combustion device is connected with a feeding pipe; the output end of the alcohol-based combustion device is connected with a pipeline; the upper end of the pipeline is connected with a first smoke discharging pipeline. The bright annealing unit applied to stainless steel strips is stable in structure, convenient to operate, high in vibration resistance and convenient to move; the alcohol-based combustion device is adopted; the energy can be saved, and the emission can be reduced; meanwhile, thecooling device is capable of greatly reducing the occupation of the space; the cost can be reduced; a lot of time and energy of workers can be reduced; the bright annealing unit is worthy to be popularized.