15 results about "Gas quenching" patented technology

The present application belongs to the technical field of wind speed test tooling, and particularly relates to a wind speed test tooling for the inside of a gas quenching furnace. The present application comprises a gas quenching furnace main body, the inside of which is provided with a test tooling fixing seat, the inside of which is provided with a fixing rotating part, and the test tooling fixing seat is provided with a telescopic speed measurement assembly which can rotate. The telescopic speed measurement assembly can simultaneously measure the speed of multiple measuring points, and the measured wind speed is transmitted to a positioning control part and then to external receiving equipment. The fixing rotating part controls the angle of the telescopic speed measurement assembly, and the positioning control part controls the length of the telescopic speed measurement assembly. The point position of the measuring point to be tested is determined remotely, the detection range is large, the degree of automation is high, the built-in independent power supply exports the wind speed data in a closed environment, effectively reduces the speed measurement time, reduces the influence of time factors on the speed measurement result, and improves the speed measurement accuracy.

The present invention relates to a method for recovering unreacted iodine using an unreacted iodine recovery device comprising: a gas quenching device comprising a hollow cooling body into which a reaction gas mixture containing iodine (I2) discharged from a trifluoroiodmethane (CF3I) manufacturing process by the reaction of trifluoromethane (CF3H) and iodine (I2) is supplied to one side of the upper portion, and a first injection unit into which cooling water is sprayed from the upper portion of the cooling body; and a filtration device comprising a hollow filtration body having a filter with a plurality of through holes formed in the lower portion of the gas quenching device, and a second injection unit into which cleaning water is sprayed from the upper portion. A cooling step in which a high-temperature reaction gas mixture is supplied to the above-mentioned cooling body and cooling water is sprayed from the first injection part to cool the reaction gas mixture and gaseous iodine (I2) is precipitated, and The above aqueous solution and solid iodine (I2) flow into a filtration device and undergo a filtration step in which the aqueous solution and iodine (I2) are separated by a filter, and The present invention relates to a method for recovering unreacted iodine, characterized in that the iodine (I2) filtered by the above filter is cleaned by spraying cleaning water from a second spraying unit.

This invention relates to the field of metal heat treatment technology and discloses a two-stage high-pressure mixed gas quenching method for high-strength steel. The method first coats the workpiece surface with an inorganic-organic hybrid sol, which is then dried to form a pre-protective film that is in-situ ceramized at high temperatures. After austenitization by heating, a two-stage gas quenching is performed. In the second stage of cooling, the ratio of the supply gas pressure to the chamber pressure is strictly controlled to be above the critical flow threshold, creating a sonic congestion flow at the nozzle. This utilizes gas dynamics principles to physically isolate the downstream pressure fluctuations from interfering with the upstream supply gas flow. Simultaneously, a low-frequency back pressure pulse wave is applied in the quenching chamber to forcibly disturb the gas boundary layer on the workpiece surface, disrupting the stagnant flow zone on the leeward side. This invention utilizes the hydrodynamic congestion effect and unsteady flow characteristics to effectively eliminate heat transfer blind zones in complex surfaces. Combined with the coating to block surface decarburization, it achieves uniform cooling and low distortion control of high-strength steel.

The application provides a fine particle high-purity preparation method of a multi-element pre-alloy powder for a diamond tool, the pre-alloy powder takes iron, copper, tin, nickel and cobalt as main raw materials, and the preparation method comprises the following steps in sequence: raw material pretreatment, double-field coupling smelting, atomization-gas quenching, multi-stage grading, reduction annealing, composite purification and passivation post-processing steps; raw material deep purification is realized through vacuum degassing and plasma cleaning, composition uniformity is ensured by adopting electromagnetic induction and vacuum arc field collaborative smelting, powder particle size and morphology are controlled by combining ultrasonic atomization and low-temperature gas quenching, and finally, deep deoxidization and impurity removal are realized through vacuum distillation and plasma purification, the pre-alloy powder prepared by the application has low oxygen content, concentrated and uniform particle size distribution, the final sintered body has a bending strength of 820 MPa and a diamond shear strength of 90 MPa, and is significantly better than traditional products.

The application discloses a preparation method of a perovskite thin film, which comprises the following steps: coating a perovskite precursor solution on a substrate to prepare a perovskite wet film, and performing gas quenching on the perovskite wet film; and performing ultrasonic oscillation treatment on the perovskite wet film after the gas quenching, and then performing annealing to obtain the perovskite thin film. The application further discloses the perovskite thin film prepared by the above preparation method and application of the perovskite thin film in a solar cell. The perovskite thin film is prepared through a gas quenching process, and then ultrasonic oscillation treatment is performed on the perovskite thin film to regulate and control a nucleation and crystallization process of the perovskite thin film, so that larger perovskite grains are obtained, grain boundary defects are reduced, and residual stress of the perovskite thin film is eliminated, thereby high-quality perovskite thin film is prepared. The method has the advantages of simple process, environmental protection in a preparation process and low cost. The solar cell prepared by using the perovskite thin film has high photoelectric conversion efficiency and stability, and has a wide application prospect.

The application relates to the technical field of heat treatment, and discloses an energy-saving modular gas quenching furnace. The energy-saving modular gas quenching furnace comprises a gas quenching furnace body, wherein a gas quenching chamber is arranged in the gas quenching furnace body, and a protective gas circulation system is further arranged; the protective gas circulation system comprises a gas exhaust pipe, a fan and a gas return pipe which are sequentially connected; the gas inlet of the gas exhaust pipe and the gas outlet of the gas return pipe are both connected to the gas quenching chamber; a Rankine power generation system is further arranged; the Rankine power generation system is provided with a gasification system and a power generation mechanism; the gasification system comprises a working medium pump, an atomizing nozzle and a gasification mechanism which are sequentially connected in communication; and the gasification system is arranged in the gas exhaust pipe. The high-temperature protective gas discharged from the gas quenching chamber is used to heat and vaporize the working medium in the gasification system, a large amount of pressure gas is rapidly generated to drive the power generation mechanism to generate power, and the electric energy is fed back to the fan or the working medium pump, so that the waste heat of the high-temperature protective gas of the gas quenching furnace is efficiently recovered and utilized, and the comprehensive energy consumption of the equipment is reduced.

This invention belongs to the field of mold heat treatment technology, specifically relating to a vacuum air quenching heat treatment method for FS373 cold working molds. The steps are as follows: the mold is placed in a vacuum high-pressure gas quenching furnace and subjected to multiple heating and holding processes; after the holding period, a certain amount of N2 is introduced for pre-cooling treatment, followed by nitrogen gas injection to a furnace pressure of 6500-7500 mbar and a fan speed of 2500-3000 r / min to begin cooling, reducing the temperature to below 60°C before removal from the furnace; after removal from the furnace, the mold is immediately transferred to a tempering furnace for tempering treatment, undergoing three alternating cycles of "tempering-deep cooling" until the hardness reaches 60-62 HRC; thus, the FS373 cold working mold is obtained. This invention achieves a synergistic improvement in the hardness, hardness uniformity, and toughness of the FS373 mold, enabling the FS373 cold working mold to reach a hardness of 60 HRC, greatly improving its strength and toughness. The thickness direction of the mold cross-section achieves an ultra-uniform hardness distribution.

This invention discloses a water-based heat recovery system and method for a lithium battery electrode gas quenching production line, belonging to the field of industrial energy-saving technology. The system includes an evaporation-side module, a compression module, a condensation-side module, a reflux module, and a water replenishment module. The evaporation-side module is located in the nitrogen cooling channel and consists of multiple evaporation chambers with decreasing temperatures. Evaporators connected in parallel within the chambers cause ultrapure water to absorb heat and evaporate. The generated steam is separated by a steam-water separator and then compressed into high-temperature superheated steam by a high-temperature screw compressor. The condensation-side module is located in the nitrogen heating channel and consists of multiple condensation chambers with decreasing temperatures. The condensers within the chambers are grouped and connected in series according to temperature ranges, causing the superheated steam to condense and release heat. The condensed working fluid is separated by a steam-water separator, pressurized by a water pump, and throttled before returning to the evaporation side, forming a closed loop. This invention employs MVR technology to achieve efficient recovery and cascade utilization of medium- and high-temperature waste heat. The system has a high overall energy efficiency ratio, stable operation, and significant energy-saving and environmental protection effects.

This application discloses a parametric simulation modeling method and device suitable for flow field optimization of thin-walled cylindrical components, relating to the field of numerical simulation technology. The method includes: generating a meshed simulation model comprising a furnace body and components located within the furnace body, wherein the furnace body includes tuyeres; obtaining initial values ​​of the tuyeres' geometric parameters; performing a flow field solving operation: based on the tuyeres' geometric parameters and a preset simulation time and time step, solving for the flow field distribution of the target model using a solver; after performing the flow field solving operation, if the solved flow field distribution of the target model does not meet the target requirements, obtaining adjustment values ​​for the tuyeres' geometric parameters, and returning to perform the flow field solving operation and subsequent steps until the solved flow field distribution of the target model meets the target requirements. This application can reduce the computational load and cost of simulation modeling for flow field optimization in vacuum high-pressure gas quenching processes of thin-walled cylindrical components, and improve optimization efficiency.

This invention relates to the field of mechanical manufacturing technology and discloses a manufacturing process for a worm gear used in the dexterous hand of a humanoid robot, comprising the following specific steps: Step 1: Material selection and pretreatment; Step 2: Rough turning and semi-finish turning; Step 3: Thread forming; Step 4: Heat treatment process, placing the worm gear formed in Step 3 into a vacuum heat treatment furnace for further processing; Step 5: Fine grinding and polishing; Step 6: Cleaning and rust prevention treatment. This invention achieves austenitization by heating the worm gear to 820℃~880℃ at a rate of 8℃ / min~12℃ / min in a vacuum heat treatment furnace, holding it at that temperature for 20min~40min, followed by high-pressure gas quenching, with the cooling rate controlled at 60℃ / s~100℃ / s. A closed-loop control using an infrared thermometer ensures an axial temperature difference ≤15℃, effectively solving the problem of uneven temperature distribution caused by differences in cross-sectional dimensions.

The utility model discloses a kind of gas-water mixed steel slag gas quenching granulation equipment, belong to steel slag gas quenching granulation technical field, including shell, high-pressure inlet pipe, water inlet pipe and high-pressure gas nozzle, high-pressure gas chamber and atomizing water channel are set in shell interior, high-pressure inlet pipe is communicated with high-pressure gas chamber one end, water inlet pipe is communicated with atomizing water channel, high-pressure gas nozzle is communicated with high-pressure gas chamber other end, this gas-water mixed steel slag gas quenching granulation equipment, by the shell of trapezoidal structure, with the flow of high-pressure gas, the pressure of high-pressure gas chamber inner wall to air flow gradually increases, can accelerate the flow rate of air flow, while atomizing water liquid is sprayed through atomizing water nozzle, and atomizing water flow and high-pressure gas flow are same, can avoid the air flow speed drop caused by the mutual intersection of both, solve the steel slag gas quenching granulation equipment of existing most inconvenient to improve air flow speed, while water curtain and high-pressure air jet form intersection, cause wind resistance to greatly promote, make the granulation quality reduce condition.

Disclosed in the embodiments of the present invention are a gasification system and method for total heat recovery via waste heat boilers. The system comprises a gasification chamber, a radiant waste heat boiler, a slag pool chamber, a convective waste heat boiler, a quencher and a circulating-gas treatment device, wherein a mixture of biomass and an oxidizer is gasified in the gasification chamber to generate high-temperature crude syngas and molten slag; the high-temperature crude syngas is output from a gas outlet of the radiant waste heat boiler to the convective waste heat boiler, the convective waste heat boiler exchanges heat with the high-temperature crude syngas by means of a heat-exchange tube, and the cooled high-temperature crude syngas is output to the quencher; the quencher quenches the high-temperature crude syngas and outputs quenched low-temperature crude syngas through a syngas outlet; and the circulating-gas treatment device transmits a portion of the low-temperature crude syngas to a circulating-gas inlet of the radiant waste heat boiler, forming a mixture of low-temperature crude syngas and high-temperature crude syngas in the radiant waste heat boiler, thereby reducing the temperature of the high-temperature crude syngas. In the present invention, the outlet temperature of the radiant waste heat boiler is maintained within an optimal range by means of circulating-gas quenching.

The utility model belongs to the technical field of stove, disclose a single chamber gas quenching vacuum furnace, including vacuum furnace body, the vacuum furnace body includes vacuum inner furnace and vacuum outer furnace, one end of vacuum outer furnace is equipped with air return chamber, and the connecting place of air return chamber and vacuum outer furnace is equipped with fan, the inside of vacuum inner furnace is equipped with heating room, one end of vacuum inner furnace away from fan is equipped with inner furnace door, one end of vacuum outer furnace is equipped with outer furnace door. The utility model discloses through the upper and lower surface of vacuum inner furnace, the outer periphery other parts of inner furnace door and vacuum inner furnace are equipped with multiple one -way air inlet subassembly, and the rotation drive subassembly that is equipped, multi -way air intake and rotating workpiece realize 360 even cooling, reduce deformation, through the auxiliary compression assembly that is equipped, can be adapted to special-shaped or slender workpiece, expands the application range, the output shaft of hydraulic cylinder promotes the fixed compression of auxiliary pressure block to workpiece and presses down, and then cooperates servo motor drive rotating shaft rotation, reduces manual intervention, and improves production efficiency.

The application discloses a production process and a production device of a high-pressure-resistant, low-temperature-resistant and corrosion-resistant austenitic seamless stainless pipe for aerospace, and the production process comprises the following steps: raw material preparation, cutting, heating treatment, rolling forming, heat treatment, cooling treatment, straightening treatment, surface treatment, quality detection and packaging and warehousing, and the production equipment used in the cooling treatment step comprises a comprehensive billet cooling box, a load driving hydraulic cylinder, a billet air cooling conveyor and a medium cooling conveying claw. The application has four cooling treatments of water quenching, oil quenching, gas quenching and air cooling, the cooling conveying assembly mechanism makes the billet have two conveying routes, can better make the billet synchronously cooled in two cooling modes of liquid medium cooling and gas medium cooling in different modes, prevents the cooling treatment of the latter billet from being affected by the former billet, and improves the free flexibility of the cooling process operation.

This utility model belongs to the field of vacuum gas quenching furnace technology, and particularly relates to a graphite nozzle with a flip-plate buffer function. It includes: a graphite nozzle body, comprising a nozzle head and a nozzle tail. A nitrogen channel is provided inside the nozzle head, and a graphite flip-plate mounting cavity communicating with the nitrogen channel is provided inside the nozzle tail. The graphite flip-plate is rotatably mounted in the graphite flip-plate mounting cavity via a molybdenum mounting rod. A buffer screw mounting hole is provided on the nozzle tail, and a buffer screw is movably mounted in the buffer screw mounting hole. A nut that cooperates with the buffer screw is provided at the end of the buffer screw inside the graphite flip-plate mounting cavity. When nitrogen is filled into the vacuum gas quenching furnace, the graphite flip-plate flips open and impacts the lower end of the molybdenum mounting rod, thereby effectively buffering the upward-flipping graphite flip-plate and preventing breakage during the flipping process.