12results about How to "Increase cooling intensity" patented technology

This invention relates to a steel for automobile engine pistons and its manufacturing method. The chemical composition of the steel, by weight percentage, is: C: 0.41–0.47%, Si: 0.15–0.35%, Mn: 0.70–1.00%, Cr: 1.10–1.40%, P: ≤0.020%, S: 0.015–0.035%, Mo: 0.17–0.27%, Al: 0.010–0.030%, N: 0.0040–0.0060%, with the balance being Fe and unavoidable impurities. The microstructure consists of ferrite and pearlite, with uniform distribution of ferrite and pearlite structures. The geometric center distance between each ferrite and pearlite structure is 15–30 μm. The hot-rolled hardness of the steel is ≤230 HBW, and the banded structure in the steel is ≤1.5 grade. The product features a narrow range of carbon deviation in cross-section, shallow decarburized layer and microcrack depth on the steel surface, low hot-rolled hardness, good banded structure, and high tensile strength after quenching and tempering.

This invention relates to the field of welding deformation prevention technology and provides a welding deformation prevention and fixing device for membrane wall tubes. The device includes a welding table with a fixing frame fixedly connected to it. The fixing frame has a fixing mechanism, and the fixing mechanism contains a cooling channel that can be connected to an external water-cooling tank via a water pipe and pump. The device also includes a control system comprising a clamping pressure adaptive control module. This module constructs an adaptive control model based on a reference clamping force, transient instability probability, and current wall tube vibration intensity, outputs a dynamic clamping force setpoint, and controls the fixing mechanism. This invention can dynamically adjust the clamping force of the fixing mechanism according to the transient instability probability and real-time vibration intensity of the membrane wall tube during welding. This makes the clamping force no longer a static preset value but can respond in real time to dynamic changes during welding, effectively addressing the problem of insufficient static constraint force when instantaneous thermal stress or vibration intensification occurs.

This invention discloses a method, apparatus, equipment, and medium for controlling slab continuous casting, comprising: determining a reference area for the target slag line crack within the crystallizer based on the set liquid level parameters corresponding to the current casting process and the actual state of the crystallizer; determining the target liquid level parameters of the crystallizer after entering the final stage in the current casting process below the reference area; and controlling the liquid level parameters of the crystallizer to change from the set liquid level parameters to the target liquid level parameters in response to a trigger signal indicating that the current casting process has entered the final stage. This invention utilizes the adjustable liquid level of the casting machine's crystallizer to rationally adjust the crystallizer liquid level, ensuring that the solidification front of the slab during the final stage avoids the slag line position in the casting process, while simultaneously increasing the cooling intensity of the crystallizer and reducing the overall hot surface temperature of the copper plate, thus providing dual protection against scratches caused by irregular tail slabs on the copper plate.

The invention discloses a method for realizing water temperature difference adjustment by automatically adjusting water quantity of a crystallizer, and belongs to the technical field of continuous casting of ferrous metallurgy. According to the technical scheme, default cooling water flow of the wide face and the narrow face of the crystallizer is set according to the continuous casting pulling speed (the pulling speed larger than or equal to 1.3 m / min and the pulling speed smaller than 1.3 m / min are set in two gears); the water inlet and outlet temperature difference of the wide surface and the narrow surface is monitored in real time; when the wide surface temperature difference is larger than 9 DEG C, the wide surface water volume is gradually increased step by step, the water volume is 50 L / min every time, the interval is 1 min, and the pulling speed is reduced by 0.1 m / min if the water volume still exceeds the limit after two times of adjustment; when the temperature difference of the narrow surface is greater than 9 DEG C, increasing 30 L / min every time at an interval of 1 min, and reducing the pulling speed if the limit is still exceeded after two times; keeping the water quantity unchanged when the temperature difference is less than or equal to 9 DEG C; and a visual warning signal is sent out when abnormity occurs. According to the method, dynamic partition accurate adjustment of the cooling water amount is achieved, a multi-stage protection mechanism of increasing water first and then decreasing speed is established, surface cracks of the casting blank are remarkably reduced, and the hot delivery rate and production safety of a casting machine are improved.

The utility model provides a standby circulating cooling device, which relates to the technical field of metallurgical water cooling equipment, and comprises a water storage tank and a snakelike water return copper pipe, the snakelike water return copper pipe is arranged at the upper part in the water storage tank, the input end of the snakelike water return copper pipe is connected with a water return pipe, and the water return pipe extends out of the water storage tank; the output end of the snakelike water return copper pipe is connected to the interior of the water storage tank, and a water supply pipe is connected to the lower portion of one side of the water storage tank; the water storage tank serves as a standby circulating cooling water device, the water supply pipe is connected with the water inlet pipe bypass valve of the water cooling system, the water return pipe is connected with the water outlet pipe bypass valve of the water cooling system, and water stored in the water storage tank serves as a water source to be used for pressurization of a water pipeline pump and cooling of water cooling equipment. After the water cools the equipment, the water passes through the water return pipe to the snakelike water return copper for heat dissipation, and returns to the water storage tank for recycling, so that standby cooling is carried out, and the water cooling equipment can be conveniently applied to sudden water cut-off and planned water cut-off.

The application relates to a synergistic casting-rolling method for eliminating bright star defects in the dark surface of 8011 aluminum alloy single zero foil, and relates to the technical field of aluminum alloy casting-rolling processing. The method comprises the following steps: S1, melt refining: introducing aluminum alloy melt into a holding furnace for refining, and the refining time interval is 2.5-3.5 h / time; S2, casting-rolling cooling: adopting circulating cooling water to cool the casting-rolling roller, the water pressure is controlled to be 0.42-0.48 MPa, and the water temperature is controlled to be 35-40 DEG C; and S3, casting-rolling forming: sending the melt into the casting-rolling roller through a casting nozzle for casting-rolling, the thickness of the strip is controlled to be 6.3-6.6 mm, and the rolling strip speed is controlled to be 700-730 mm / min. Through multi-dimensional synergy of melt purity control, cooling strength improvement, blank thinning and strip speed reduction, the application refines the grains in the casting-rolling area, effectively inhibits the segregation and precipitation of coarse Al-Fe-Si brittle intermetallic compounds, eliminates the bright star defects in the dark surface of the foil caused by the crushing of brittle phases in the subsequent cold rolling ultra-thinning process, and significantly improves the surface quality and the yield of the single zero foil.

This invention discloses an AI-based multimodal transport collaborative optimization method and system, relating to the field of intelligent transportation technology. The method includes: acquiring temperature sampling sequences of cold chain goods in non-temperature-controlled areas, establishing an adaptive baseline, and identifying temperature peak factors and trends; constructing a temperature deviation safety window based on inertial correction and an internal loss dynamics model for the accumulated temperature deviation indicating increasing risk; identifying intermodal transport risks based on the safety window, and constructing a matching function to match intermodal transport capacity units if the risk exceeds a threshold; monitoring the temperature deviation of transport capacity in real time after matching, and adjusting the refrigeration strategy in stages based on a correction urgency coefficient; the system includes a trend identification module, a window determination module, an intermodal transport matching module, and a model optimization module. This invention achieves dynamic tracking of temperature deviation risks in cold chain transportation, capacity matching, and model self-optimization, improving the temperature control efficiency and cargo damage prediction accuracy of multimodal transport.

This utility model belongs to the field of metallurgical engineering, specifically a rapid cooling sintering structure, including a machine body. A cooling mechanism is installed inside the machine body, and a transmission frame is fixedly installed inside the machine body. Several first rotating shafts are rotatably connected inside the transmission frame, and a transmission belt is mounted on the surface of the several first rotating shafts. By setting up the cooling mechanism, a high-efficiency heat exchange channel is formed by symmetrically penetrating the sintered ore layer with dual airflows, thereby increasing the cooling intensity. Furthermore, the symmetrical airflow coverage eliminates the temperature gradient caused by unilateral cooling, achieving uniform heat dissipation of the workpiece cross-section and avoiding deformation and cracking caused by thermal stress concentration. By setting up a transmission component, a single power source drives two cooling spiral blades to operate synchronously, while rigid transmission ensures that the speeds of the two fans are completely consistent, improving the uniformity of airflow coverage and eliminating cooling blind spots caused by asynchronous airflow.

The utility model discloses a quick-release concentrate nozzle for a flash furnace, and belongs to the technical field of flash furnaces. The device mainly comprises a flow guide cone, a water-cooling bottom plate, a central oxygen pipe and a distribution air ring, the central oxygen pipe is installed at the top of the water-cooling bottom plate, the distribution air ring is installed between the flow guide cone and the water-cooling bottom plate, a plurality of water pipe heads used for being connected with metal hoses are installed at the top of the water-cooling bottom plate, fasteners are arranged on the water-cooling bottom plate, and a threaded opening is formed in the top of the flow guide cone. The central oxygen pipe is matched with the threaded opening, the number of the water pipe heads is four, and the four water pipe heads are symmetrically distributed in pairs. The quick-release concentrate nozzle for the flash furnace has the advantages of being simple in structure, quick to disassemble and assemble and good in sealing performance, solves the problems that an existing nozzle is complex in installation and connection and air leakage and water leakage are caused by untight sealing due to a large number of sealing openings, meanwhile increases the thickness of the water-cooling bottom plate, improves the cooling strength and improves the service life of the water-cooling bottom plate. And the service lives of the concentrate nozzle diversion cone and the water-cooling bottom plate are prolonged.

This utility model relates to the field of tunnel kiln technology and discloses a tunnel kiln cooling device, including a tunnel kiln cooling body, a cooling assembly on the tunnel kiln cooling body, and an air outlet assembly on the cooling assembly. This tunnel kiln cooling device, by setting an air guide column inside the air outlet nozzle, with multiple evenly distributed air inlets and spiral-shaped guide grooves on the air guide column, allows the airflow blown by the quenching fan to be evenly dispersed through the air inlets after entering the air outlet nozzle. Guided by the spiral guide grooves, the airflow forms a stable rotating flow state, which is beneficial for optimizing the airflow direction. Simultaneously, the multiple evenly distributed air outlet vertical pipes and air outlet nozzles allow cooling air to be blown out simultaneously from multiple directions and positions, forming a uniform cooling airflow field. This allows the cooling airflow to better act on the surface of the object, improving the uniformity of cooling.

The application aims at solving the problem that high compression ratio, Miller cycle or Atkinson cycle engine is easy to generate knock, which leads to power decline and engine thermal efficiency decline, and provides an electronic water pump compensation control method, device, system, vehicle, medium and equipment when engine knock occurs. The method comprises the following steps: under the current engine working condition, it is judged whether the electronic water pump knock compensation function is started due to engine knock; if the electronic water pump knock compensation function is started due to engine knock, the initial value and the compensation value of the operating parameter of the electronic water pump under the current engine working condition are determined; and the operating parameter of the electronic water pump is started based on the compensation value and the initial value.

The invention discloses a multi-stage damping self-adaptive cooling intelligent flow regulating valve and a control system, and relates to the technical field of air volume regulating valves, the multi-stage damping self-adaptive cooling intelligent flow regulating valve comprises a valve body shell, a regulating unit and a valve plate; an airflow channel is formed in the valve body shell, and a cooling channel structure used for circulating a cooling medium is arranged on the outer side of the valve body shell; the adjusting unit is arranged on the upstream portion of the airflow channel in the valve body shell and used for adjusting the pressure drop and flow field distribution of fluid flowing through the airflow channel by changing the zigzag path of the airflow channel. The valve plate is arranged at the downstream of the adjusting unit, and the sectional area of the airflow channel is continuously adjusted by changing the rotating angle of the valve plate; according to the invention, the linearity and the stability of flow regulation are obviously improved, and the service life of equipment under severe working conditions of the grate cooler is obviously prolonged.