6results about How to "Reduce oxidation burn" patented technology

This invention belongs to the field of combustion control technology for heating furnaces, specifically a dynamic prediction method for air-fuel ratio based on combustion control in heating furnaces. It includes preprocessing raw monitoring data from the heating furnace operation process based on combustion mechanisms, constructing a multi-dimensional input vector, outputting the optimal air-fuel ratio prediction value for future moments based on an improved LSTM neural network model, and adjusting the combustion air supply to the heating furnace according to the optimal air-fuel ratio prediction value. This invention effectively solves the problem of slow response to gas fluctuations and changes in operating conditions in traditional methods through the synergistic driving of mechanisms and data, significantly improving the accuracy and real-time performance of combustion control. Furthermore, by deeply integrating physical mechanisms, it enhances the model's generalization ability and interpretability, significantly improving the thermal efficiency of the heating furnace and reducing unit product energy consumption and harmful gas emissions.

The application provides a rare earth-titanium-boron composite vacuum seal welding high-density cored wire and a preparation method thereof, and belongs to the technical field of metallurgical auxiliary materials. The preparation method comprises the following steps: weighing lanthanum-cerium rare earth alloy powder, titanium powder and boron powder for batching, and then uniformly mixing under a protective atmosphere to obtain mixed powder; filling the mixed powder into a low-carbon steel cylinder after pretreatment under a protective atmosphere, and then preliminarily sealing to obtain a composite blank; performing a reduction reaction on the composite blank in hydrogen, and then performing seal welding under a vacuum condition to obtain a composite blank after vacuum seal welding; heating the composite blank after vacuum seal welding, and then performing hot drawing to obtain the cored wire. The cored wire provided by the application realizes stable composite addition of rare earth, titanium and boron with high recovery rate, and significantly improves the structure and performance of 20Mn2 steel and the like, and solves the problems of cold heading cracking, insufficient toughness and aging embrittlement.

The application provides a control method and system for heating furnace combustion optimization, comprising the following steps: S1, connecting a control station with an original fuel control system through Ethernet, and connecting a control manual channel of the original fuel control system; S2, performing temperature control, using relevant valve experience data and furnace change response data to confirm the change amount of the valve and the temperature change corresponding relationship; S3, using actual temperature field change data to perform operation judgment, and sending an execution signal to the relevant valve through temperature difference calculation selection; S4, completing air flow control by the relevant air valve; and S5, sending a control signal to the original fuel control system to complete control. The application improves the combustion stability of the heating furnace, reduces the high dependence on manual operation experience at present, reduces gas consumption and oxidation loss, has high control precision, fast speed response, stable combustion trend, reasonable air-fuel ratio, low modification difficulty and connection safety.

This invention relates to the field of steel rolling technology, specifically disclosing a method, apparatus, equipment, and storage medium for controlling a steel rolling heating furnace. The method includes: acquiring the material and position parameters of a steel billet; calculating the temperature distribution and heat exchange capacity of the heating furnace; calculating the temperature distribution of the steel billet using the material and position parameters, as well as the temperature distribution and heat exchange capacity of the heating furnace; and adjusting the air-fuel ratio of the heating furnace according to the temperature distribution of the steel billet. The steel rolling heating furnace control method proposed in this invention collects and predicts the heating process of the steel billet, calculates the temperature of the steel billet at different positions in the heating furnace, predicts temperature changes, and controls the combustion status of the heating furnace, thereby achieving the purpose of saving fuel consumption and reducing oxidation loss.

The invention relates to the technical field of alloy stent material preparation, and discloses a zinc-aluminum-magnesium-coated high-strength stent material, which is prepared by the following steps: selecting a low-carbon microalloy high-strength steel cold-rolled steel coil, uncoiling, degreasing with alkali liquor, pickling with hydrochloric acid, rinsing with hot water, and drying to obtain a clean steel strip; the clean steel strip is input into a continuous annealing furnace, recrystallization annealing is conducted in the protective atmosphere, heat preservation is conducted for 60-120 seconds at the temperature of 850 + / -20 DEG C, then exposure is conducted in the micro-aerobic environment, reduction is conducted in the strong reducing atmosphere, and an activated steel strip is obtained; electromagnetically stirring and filtering the plating solution to obtain an improved plating solution; preheating the activated steel strip, vertically immersing into an improved plating solution for immersion plating, and sealing and protecting by nitrogen; after the strip steel is taken out of the plating pot, high-pressure nitrogen is used for purging and rapid cooling, then slow cooling is conducted, and water mist cooling is conducted to the room temperature after the temperature is lower than 320 DEG C; coating the steel strip with a silane-zirconate composite passivation solution, and drying and curing the steel strip to obtain a passivated steel strip; and finishing, shearing and packaging to obtain the high-strength stent material with the zinc-plated aluminum-magnesium coating.

The invention relates to the technical field of metal scrap recovery, and discloses a continuous solid recovery device and method for alloy cuttings. The alloy chip continuous solid recovery device comprises a molten salt bath, an inclined bottom groove inclined towards the lower end is formed in the molten salt bath, the upper end of the inclined bottom groove is communicated with a spiral feeder, and a spiral heating pipe is arranged on a shell of the spiral feeder in a surrounding mode; the upper portion of the end, away from the molten salt bath, of the spiral feeder communicates with a metal chip feeding pipe. The continuous solid recovery method for the alloy cuttings comprises the steps that the metal cuttings are fed into a molten salt bath for melting after being subjected to vacuum degassing, metal liquid drops are collected along the inclined bath bottom, and after electrolytic refining, pure melt is continuously guided out to casting equipment through a heat preservation siphon; meanwhile, the molten salt is recycled after being regenerated. Efficient melting and impurity dissolving are achieved through the molten salt medium, negative pressure feeding and closed-loop circulation are utilized, and the problems that a traditional technology is serious in oxidation burning loss, high in energy consumption and discontinuous in process are effectively solved.