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28results about How to "Increase cooling intensity" patented technology

Smelting preparation process of large-specification bar capable of resisting temperature of 800 DEG C

The invention relates to the technical field of high-temperature alloys, and particularly discloses a smelting preparation process of a large-specification bar capable of resisting the temperature of 800 DEG C. The invention discloses a smelting preparation process of a large-specification bar resistant to the temperature of 800 DEG C. The smelting preparation process specifically comprises the following steps of vacuum induction smelting, annealing, first-time vacuum consumable smelting, electrode forging, second-time vacuum consumable smelting, consumable ingot homogenizing annealing and bar forging in sequence. According to the method, the large-size bar resistant to the temperature of 800 DEG C is prepared through the process, the bar quality is improved, the prepared large-size bar has excellent tensile property and high temperature resistance, the occurrence probability of black spots and white spots is reduced, and meanwhile homogenization control over bar components is achieved.
Owner:GAONA AERO MATERIAL CO LTD +2

Cooling wall of smelting reduction furnace

ActiveCN222362124UIncrease cooling intensitygood heat insulationSlagCopper
The utility model relates to the technical field of smelting reduction ironmaking, in particular to a cooling wall of a smelting reduction furnace. An opening of a slag hanging groove of the cooling wall of the smelting reduction furnace is inclined upwards, the included angle between the opening and the horizontal line is 30-60 degrees, and the inclined upward opening is filled with splashing slag; the cooling wall of the smelting reduction furnace is provided with an S-shaped cooling water channel which is provided with a water inlet and a water outlet; the cooling wall of the smelting reduction furnace is made of a copper-steel composite material, the hot surface and the slag hanging groove are made of copper, and the cold surface is made of steel. The cooling wall is high in cooling strength and good in slag hanging effect, and heat taken away by cooling water is reduced.
Owner:SHANDONG PROVINCE METALLURGICAL ENG CO LTD

Alloy powder spraying system and zinc-aluminum-magnesium coating process based on alloy powder spraying system

The invention belongs to the technical field of hot dip coating, and relates to an alloyed powder spraying system and a zinc-aluminum-magnesium coating process based on the alloyed powder spraying system.The alloyed powder spraying system comprises the following steps that 1, alloyed powder is dried for standby application, when the alloyed powder is prepared, high-magnesium-content zinc-aluminum-magnesium alloy is molten in a zinc-aluminum-magnesium pot to form hot dip molten liquid, and the hot dip molten liquid is cooled to the room temperature; the hot-dip coating is waited for use during hot-dip coating; 2, the strip steel is fed into a zinc-aluminum-magnesium pot to be subjected to hot dipping, so that a high-magnesium-content zinc-aluminum-magnesium coating is formed on the surface of the strip steel, and air knife treatment is conducted; and 3, the standby alloy powder in the step 1 is adopted as a cooling agent, alloy powder spraying is conducted on the surfaces of the two sides of the strip steel subjected to hot dipping at the same time through an alloy powder spraying system, a high-magnesium-content zinc-aluminum-magnesium coating is cooled and serves as a nucleation for solidification of a zinc-aluminum-magnesium coating alloy, and the high-magnesium-content zinc-aluminum-magnesium coating alloy is obtained. And cooling control over the solidification process of the high-magnesium-content zinc-aluminum-magnesium coating is achieved by adjusting parameters of the alloy powder.
Owner:CHONGQING CISDI THERMAL & ENVIRONMENTAL ENG CO LTD

A steel for automobile engine pistons and its manufacturing method

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.
Owner:JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD

A membrane wall pipe bar welding anti-deformation fixing device

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.
Owner:SHANDONG YIMING ENERGY SAVING & ENVIRONMENTAL PROTECTION EQUIP TECH CO LTD

A slab continuous casting control method, device, equipment and medium

ActiveCN116748483BIncrease cooling intensityavoid scratchesSlagProcess engineering
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.
Owner:武汉钢铁有限公司

Vacuum rapid quenching equipment

ActiveCN119566241AImprove yieldIncrease cooling intensityInterior spaceInsufficient Cooling
The invention discloses vacuum rapid quenching equipment, belongs to the technical field of rapid solidification, and solves the problem of low yield of amorphous strips caused by insufficient cooling strength of the existing vacuum rapid quenching equipment. The vacuum rapid quenching equipment comprises a melting furnace vacuum bin, a rapid quenching vacuum bin and a vacuum stock bin, the melting furnace vacuum bin, the rapid quenching vacuum bin and the vacuum stock bin are arranged in sequence; a rotary cooling roller is arranged in the rapid quenching vacuum bin, a spindle-shaped inner space is formed in the rotary cooling roller, and a cooling medium flows through the spindle-shaped inner space.
Owner:CHINA IRON & STEEL RESEARCH INSTITUTE GROUP CO LTD

Oxygen-free copper wire coil grain refinement method

The invention discloses a grain refinement method for an oxygen-free copper wire coil. The grain refinement method comprises the following steps: (1) heating an oxygen-free copper cast ingot to 680-720 DEG C within 40 minutes, and then feeding the oxygen-free copper cast ingot into a reverse extruder to be extruded into a wire coil; (2) water-cooling the wire coil extruded in the step (1) to be less than 100 DEG C within 5 minutes to obtain a cooled wire coil; and (3) oxide on the surface of the wire coil cooled in the step (2) is cleaned with acid liquor, and an oxygen-free copper wire coil finished product with the diameter being 15 + / -1 mm and the average grain size being smaller than 80 microns is obtained. Firstly, a low-temperature rapid heating method is adopted, growth of oxygen-free copper cast ingot crystal grains is restrained, and then the oxygen-free copper cast ingot is reversely extruded into a wire coil through a reverse extruding machine. In the extrusion process, the grain growth of the wire coil is inhibited by controlling the extrusion temperature and improving the cooling strength and the cooling speed of the wire coil, and the obtained oxygen-free copper wire coil is small in average grain size and meets the requirements of a new energy market.
Owner:JINCHUAN GRP PRECISION COPPER CO LTD +1

Method for adjusting water temperature difference by automatically adjusting water volume of crystallizer

PendingCN122007363AImprove thickness uniformityHigh thickness consistencyThermodynamicsWater volume
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.
Owner:CHONGQING IRON & STEEL CO LTD

Standby circulating cooling device

ActiveCN224121788UConvenient for sudden water outagesFacilitates planned water outagesIndirect heat exchangersHeat exchanger casingsWater storage tankWater source
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.
Owner:YANGCHUN NEW STEEL CO LTD

Chamfered crystallizer narrow-face copper plate for improving cooling strength of bevel of chamfered blank

ActiveCN222552113UIncrease cooling intensityquality improvementSlagMolten steel
The utility model belongs to the technical field of solidification and continuous casting of steel, and particularly relates to a narrow-face copper plate of a chamfering crystallizer, which is used for improving the cooling strength of an inclined plane of a chamfering blank. A working surface of the narrow-surface copper plate, which is in contact with molten steel, consists of three parts, namely a middle area and chamfering areas on two sides. A protective layer (including an electroplated layer, a spraying layer or a laser cladding layer and the like) is not additionally arranged on the working face of the upper area and the chamfering area of the copper plate, the material of the areas is consistent with that of a copper plate base body, and the height corresponding to the areas is 250-450 mm. The narrow-face copper plate of the chamfering crystallizer is favorable for improving the cooling strength of the inclined face of a chamfering blank and improving the lubricating function of covering slag between the copper plate and a solidification shell, so that the surface quality of a casting blank is improved, and meanwhile the risk that edge breakage occurs to protective layers at the edges and corners of the copper plate can be eliminated.
Owner:ZHONG NAT ENG & RES CENT

A synergistic casting and rolling method for eliminating dark side bright star defects of 8011 aluminum alloy single zero foil

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.
Owner:SHANDONG WANTONG METAL TECH CO LTD +1

Preparation method of amorphous strip

The invention discloses a preparation method of an amorphous strip, belongs to the technical field of rapid solidification, and solves the problem of low yield of the amorphous strip prepared by the existing method. The method comprises the following steps that 1, mother alloy is put into a smelting crucible of a smelting device, vacuum rapid quenching equipment is vacuumized, and then the vacuum rapid quenching equipment is filled with inert gas; 2, starting a smelting device to melt the master alloy until the master alloy is completely molten; 3, the molten mother alloy is transferred to a tundish through a converter, and standing is carried out; 4, a rotary cooling roller is started, the tundish is pressurized to spray the strip, and the pressure difference between the tundish and the rapid quenching vacuum bin is kept; and 5, observing the belt spraying condition, and adjusting the roller speed according to the belt material condition until the vacuum rapid quenching process is finished.
Owner:CHINA IRON & STEEL RESEARCH INSTITUTE GROUP CO LTD

Polishing device for aluminum alloy material

The invention belongs to the technical field of aluminum alloy material machining, and discloses an aluminum alloy material polishing device which comprises a polishing table, a polishing mechanism, a water storage mechanism, an air cooling mechanism and a water cooling mechanism. The polishing mechanism is arranged on the polishing table, the water storage mechanism is arranged on the polishing table, the air cooling mechanism is arranged on the water storage mechanism, and the water cooling mechanism is arranged on the water storage mechanism; the water storage mechanism comprises a mounting frame, the mounting frame is mounted on the polishing table, a water tank is mounted in the mounting frame, and a plurality of air holes are formed in one side of the water tank; the air cooling mechanism comprises an air cooler, the air cooler is installed on the water storage mechanism, and the top of the air cooler communicates with a first air outlet pipe; according to the design, the efficient heat dissipation effect is achieved in the mode that air cooling heat dissipation is matched with indirect water cooling heat dissipation, the phenomenon that the polishing agent is diluted by water and runs off can be avoided through the heat dissipation mode, and the polishing efficiency is improved.
Owner:SHAOYANG HEHE IND MATERIALS CO LTD

Method for maintaining stability of blast furnace hearth

The invention discloses a method for maintaining the stability of a blast furnace hearth, which comprises the following steps of: distributing materials for each gear by adopting a material distribution chute, and the number of turns when the material distribution chute distributes the materials for each gear from the eleventh gear to the first gear is O0003332,000 C0022222,000 or O0002332,000 C00222222,100 in sequence, or the number of turns when the material distribution chute distributes the materials for each gear from the eleventh gear to the first gear; wherein C represents coke, and O represents ore. According to the method, firstly, the center coke adding amount is increased by reducing the number of ore distribution turns of the fourth gear or canceling the inner ring gear and properly prolonging the coke distribution time, so that stability of center gas flow is kept, and meanwhile replacement of pulverized coke of a dead stock column is accelerated; secondly, the ore-coke ratio of the edge is adjusted to be suitable for the characteristic of high cooling strength of the copper cooling wall; and finally, the ore batch is properly reduced, the ore-coke ratio of the middle ring belt is reduced, and the stability of the pressure difference in the furnace is facilitated.
Owner:新余钢铁股份有限公司

Titanium-based alloy, titanium-based brazing filler metal and preparation method of titanium-based alloy

The invention discloses a titanium-based alloy, a titanium-based brazing filler metal and a preparation method of the titanium-based alloy and the titanium-based brazing filler metal, belongs to the technical field of brazing application, and solves the problems of high brittleness and low strength of a brazing joint of the existing titanium-based brazing filler metal. The titanium-based alloy comprises the following components in percentage by mass: 5%-30% of Zr, 10%-15% of Cu, 10%-15% of Ni, 0.5%-3.5% of Nb and 0.1%-0.3% of rare earth elements, the balance is Ti and inevitable trace impurities; the rare earth elements comprise one or more of La, Ce and Y.
Owner:CHINA IRON & STEEL RESEARCH INSTITUTE GROUP CO LTD

AI-based multimodal transport collaborative optimization method and system

ActiveCN120975678BRealize multi-dimensional captureImprove front-end monitoring capabilitiesInternal combustion piston enginesForecastingCold chainTemperature control
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.
Owner:TOP XINGDA

A melt processing device and method for preparing ultra-large aluminum alloy ingots

The present invention discloses a melt processing device and method for preparing super-large aluminum alloy ingots. The device is mainly composed of an annular electromagnetic melt processor, a hot top, a crystallizer, a crystallizer water tank, a graphite ring, an ingot guide and a lifting mechanism; the annular electromagnetic melt processor is placed in the crystallizer, concentric with the crystallizer, and a line port and a connecting mechanism are arranged on its top, and it is connected to the lifting structure, and can be moved up and down in the height direction of the crystallizer through the lifting mechanism, and positioned at a corresponding position in the crystallizer; the lower end of the hot top is sealed and connected to the crystallizer through a graphite ring; the crystallizer water tank is arranged on the periphery of the crystallizer. The device is used for melt processing, and in the semi-continuous casting process, the annular electromagnetic melt processor is applied to the alloy melt to achieve effective uniformity of the temperature field and composition field of the super-large volume alloy melt, and to achieve effective control of the melt flow, so as to prepare high-quality super-large aluminum alloy ingots with uniform and fine structure and uniform composition.
Owner:YOUYAN METAL COMPOSITE TECH CO LTD

A method to avoid freezing of billets after steel leakage in continuous casting machine

ActiveCN116944450BPrevent steel leakage and frozen billet accidentsincrease volume
The invention relates to a method for avoiding freezing of billets after steel leakage in a continuous casting machine. By adding a steel leakage button, steel leakage control is enforced to prevent steel leakage and freezing of billets caused by untimely steel leakage detection. The steel leakage button is added, and improvements are made to sector position control, drawing speed control, secondary cooling water cooling circuit control, support roller opening control and support roller target force control respectively. By increasing the sector opening value, the volume of the tail slab is increased, the steel overflow problem is effectively solved, and the billet drawing resistance is reduced by 20-40%. By controlling the billet drawing speed and the secondary cooling water flow rate, the cooling intensity of the slab and the steel leakage point is increased by 30-50%. By controlling the automatic opening of the support roller to prevent the excessive support force from squeezing the slab, most of the molten steel overflow can be reduced. By increasing the support roller target force, the friction between the roller and the slab is increased, so as to provide a guarantee for pulling out the slab, reduce the equipment repair time after steel leakage, save costs, and improve the operation rate of the casting machine.
Owner:BENGANG STEEL PLATES CO LTD +1

Rapid cooling sintered structure

ActiveCN224567897UEven heat dissipationIncrease cooling intensitySpiral bladeTransmission belt
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.
Owner:SHANDONG JINRUIDA RARE EARTH NEW MATERIALS CO LTD

Quick-release concentrate nozzle for flash furnace

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.
Owner:JIANGXI COPPER

A tunnel kiln cooling device

ActiveCN224623438UOptimization directionImprove uniformity
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.
Owner:HUBEI DAQING TECH CO LTD

Electronic water pump compensation control method, device, system, vehicle, medium and equipment

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.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD

Brazing method of titanium-based brazing filler metal

The invention discloses a brazing method of titanium-based brazing filler metal, belongs to the technical field of brazing application, and solves the problems of high brittleness and low strength of a brazed joint by adopting an existing brazing method. The brazing method comprises the following steps that a, titanium-based brazing filler metal is placed on the surface of a to-be-welded component, and the titanium-based brazing filler metal is fixed and clamped through a tool clamp; and b, the to-be-welded component where the titanium-based brazing filler metal is fixed is placed in a vacuum brazing furnace, brazing is conducted, and heat preservation is conducted.
Owner:CHINA IRON & STEEL RESEARCH INSTITUTE GROUP CO LTD

Multi-stage damping self-adaptive cooling intelligent flow regulating valve and control system

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.
Owner:YANGQUAN JIDONG CEMENT CO LTD

A test bench for testing the sealing performance of centrifugal compressors

The invention relates to the technical field of sealing performance testing, and discloses a test bench for testing the sealing performance of a centrifugal compressor, comprising an air filling pipe, an air collecting pipe and an air collecting bottle, wherein a centrifugal compressor to be tested is arranged between the air filling pipe and the air collecting pipe, the air filling pipe is connected to the air inlet pipe of the centrifugal compressor, the air collecting pipe is connected to the air outlet pipe of the centrifugal compressor, the upper and lower ends of the air filling pipe are respectively fixedly connected with air supply pipes, the two air supply pipes are commonly connected to an air filling box, the air supply pipes are respectively connected to the two sides of the opposite surface of the air filling box, an air cavity is arranged inside the air filling box, a push plate is slidably arranged inside the air cavity, and an air filling structure which is connected to the air cavity and can only take in air in one direction is arranged at both ends of the air filling box; the test bench for testing the sealing performance of the centrifugal compressor can detect the sealing performance of the centrifugal compressor during the working process of the centrifugal compressor by starting a fan cycle to fill the centrifugal compressor with air and then collecting it through the air collecting bottle, and by detecting the volume size of the corresponding gas in the air collecting bottle after compression.
Owner:IHI SULLAIR COMPRESSION TECH SUZHOU

Air conditioning operation control method, device, electronic equipment and storage medium

The embodiment of the present invention provides an air conditioner operation control method, device, electronic device and storage medium, the method comprising: obtaining the importance of a target area and the first historical collected data of the target area in the past first preset time period; inputting the first historical collected data into a multi-index prediction model, predicting the predicted load rate of the air conditioner in a second preset time period following the first preset time period, the predicted computing resource usage rate of the server, and the predicted temperature difference between the temperature of the server and the ambient temperature, and controlling the operation of the air conditioner according to the importance, predicted load rate, predicted computing resource usage rate and predicted temperature difference. In the embodiment of the present invention, multi-dimensional parameters are predicted based on the multi-index prediction model, and when it is found that the hair temperature is about to rise, the cooling intensity of the air conditioner is increased in advance for effective cooling, and when it is found that the hair temperature is about to decrease, the cooling intensity of the air conditioner is reduced in advance to avoid waste of air conditioning energy consumption.
Owner:CHINA TELECOM CORP LTD

A mist cooling device for super long round steel and normalizing process for SA182F11 super long round steel

The present invention provides a mist cooling device for super-long round steel and a normalizing treatment process of SA182F11 super-long round steel using the mist cooling device. The mist cooling device is arranged behind an induction heating furnace. The mist cooling device is in the shape of a gyroscopic body as a whole and a through hole is arranged in the center of the mist cooling device along its axial direction for super-long round steel to pass through. The mist cooling device has multiple mist cooling rings evenly distributed along its axial direction, and the mist cooling ring has multiple nozzles evenly distributed along its circumference, and the spray medium of the nozzle is water mist. By adding a mist cooling unit after the induction heating furnace, the cooling intensity is improved. In the normalizing treatment process of the present invention, the steel is heated to 930-950°C in an induction heating furnace for insulation, and a continuous spray cooling method is adopted at the same time to obtain a pearlite + ferrite structure in equilibrium, which exhibits higher high-temperature endurance strength.
Owner:DAYE SPECIAL STEEL CO LTD