510 results about "Cooling time" patented technology

The invention provides a split type direct-current charging pile liquid cooling heat dissipation system, and belongs to the technical field of direct-current charging piles, a closed liquid cooling circulation system is constructed through equipment such as a liquid cooling circulation pump, a radiator assembly and a temperature sensor array, and active temperature control is realized by adopting a temperature pre-adjusting module as a core. The system firstly collects power and temperature data to establish a power heat effect function to describe a power-temperature relationship, and extracts temperature time sequence characteristics through a heat situation sensing model by adopting an improved time sequence convolutional network to configure a self-adaptive receptive field adjustment mechanism to capture different time scale change modes; and constructing a double-layer optimization framework in combination with a temperature control game model to solve a Nash equilibrium solution, and calculating an optimal cooling adjustment vector including advanced cooling time and cooling power parameters. And a change curve is generated through real-time monitoring and dynamic correction and is converted into a control instruction, the frequency converter is controlled to adjust the rotating speed of the circulating pump and the opening of the flow valve, and advanced adjustment before temperature change is achieved to eliminate response lag.

The invention belongs to the field of production control, and particularly discloses a control method of a thick-wall optical product precision injection molding hot runner system, which comprises the following steps of: acquiring mold geometric data of local thickness distribution in a mold-containing cavity along a melt flowing direction, calculating theoretical cooling time constants of each region by combining material thermophysical parameters, and calculating the cooling time constant of each region; establishing a thickness-cooling rate mapping relation model; predicting the time when the melt reaches each area and the effective cooling time according to an injection time sequence; solving a temperature compensation value of a heating area corresponding to the hot runner by taking the minimum final temperature variance when the key area is ejected as a target; and finally, dynamically applying a compensation value according to a time sequence before the melt arrives, and withdrawing / adjusting after region filling is completed or a pressure maintaining stage is entered. The invention can balance the temperature field of the mold cavity, reduce the refractive index gradient and shrinkage defect, improve the optical performance and yield of the product, and is suitable for precise injection molding of the thick-wall optical product.

The invention discloses a conformal cooling device for die-casting die temperature intelligent control and a regulation and control method. The conformal cooling device comprises a die body, an embedded conformal cooling runner network, a multi-mode temperature sensing array, a partition flow regulation and control valve group, a central cooperative controller and a cooling medium circulation supply unit. Through the combination of shape follow-up runner design and partition dynamic regulation and control, a cooling blind area is effectively eliminated, the surface temperature uniformity of a cavity is remarkably improved, and the cooling time of a hot spot area is shortened, so that the defects of shrinkage cavities, hot cracks and the like are inhibited, and the defect rate of castings is reduced. And under the cooperation of multi-mode sensing and intelligent control, the system response is accelerated, the energy consumption is reduced, the die-casting rhythm is shortened, and the synchronous optimization of the production efficiency and the energy utilization efficiency is realized.

According to the multi-path cooling control method for the non-adjustable flow of the cooling spray box after hot plate rolling, the mode that an annular rail is combined with a trolley is adopted, the trolley bears a sample through a sample bearing table to do annular motion, the annular rail is an oval rail comprising two parallel linear segments and two semicircular segments, and at least one cooling spray box is arranged along the linear segment rail; the cooling area can be infinitely lengthened at any workpiece speed; according to the cooling starting temperature, the water cooling speed, the cooling stopping temperature, the cooling stopping time between the cooling areas and the production line cooling spray box layout of the N cooling areas determined by the experiment, the experiment device is configured according to different spray box opening modes, the cooling experiment is carried out, and spray box opening mode parameters corresponding to the optimal cooling speed of the N cooling areas are obtained; carrying out cooling control after rolling on corresponding sample production; besides, the method is implemented under the condition basically consistent with the actual working condition of the production line, so that the product design output and the production line process control are more accurate and efficient, the product research and development speed can be effectively increased, the process control precision is improved, and the production line trial-manufacturing cost is reduced.

The invention belongs to the technical field of material processing, and discloses a magnesium alloy casting semi-solid injection molding method and application, and the method comprises the following steps: checking and adjusting a semi-solid injection machine, a casting mold and other equipment to be in a normal state, and placing magnesium alloy particles in a designated area of a hopper; putting a long nozzle of the semi-solid injection platform into the center of a mold sprue; setting the temperature of each section of a mold temperature controller, a charging barrel and a nozzle; preserving heat for a period of time after the temperature of the charging barrel reaches a set value, so that the temperature of materials in the charging barrel is uniform; setting the injection rate, the cooling time, the material return distance and the melt pressure of the semi-solid injection machine; and after a release agent is quantitatively sprayed to the mold, a semi-solid injection program is started, and a casting is obtained. The AS41B magnesium alloy particles with good heat resistance are adopted as the raw material, the semi-solid injection molding method is combined, a melting furnace is not needed, only heating to the semi-solid state is needed, the melt temperature is low, energy is saved, the service life of a mold is prolonged, protective gas is not needed, and the manufactured casting is good in mechanical property and high in heat resistance.

The invention discloses a stable transportation control method of an extrusion-injection molding integrated device, which comprises the following steps of: adjusting the pushing speed v2 of an injection molding plunger or an injection molding screw, recording the pushing time length delta t1 of the injection molding plunger or the injection molding screw, and the pressure maintaining and cooling time lengths delta thold and delta tcool of an injection molding assembly, and combining the sizes of an extrusion screw and an extrusion nozzle, so as to control the stable transportation of the extrusion-injection molding integrated device. And calculating the conditions met by the actual rotating speed of the extrusion screw, so that stable transportation of the melt can be realized. According to the invention, 'cutoff-accumulation 'oscillation of the melt can be effectively avoided, and stability and high efficiency of the melt transportation process are realized.

The present disclosure relates to a system and method for monitoring an injection molding process which may calculate injection time and packing time by attaching an acceleration sensor to an injection molding mold with bolts and measuring an amplitude change of a vibration signal of a mold during injection molding, detect mold closing and opening signals of the mold using a magnetic hall sensor, and monitor the injection molding process by measuring cycle time and cooling time, thereby simplifying installation and maintenance and reducing installation costs.

The invention relates to the technical field of laser control, in particular to a laser grinding control method and system for a platform, which comprises the following steps: comparing a target depth value with an actual depth value, extracting a convex region and a concave region in combination with a surface image, calculating the volume, quantifying the space distribution and material quantity difference of various types of regions in a to-be-ground platform, and calculating the size of the to-be-ground platform. The precision loss caused by blind machining is avoided, the mutual matching degree between the convex area and the concave area is analyzed by integrating parameters such as the position relation and the volume matching degree between the areas, so that the feasibility and efficiency of transferring of the material between the convex area and the concave area during heating are quantitatively represented, and a grinding path is generated based on the mutual matching degree; heating and cooling time sequences are distributed in combination with thermal characteristics of materials and are converted into execution instructions of laser grinding equipment, so that the motion path of a laser beam is reasonable, energy output is precise, idle stroke and thermal deformation are reduced, thermal stress is controlled through periodic cooling, and meanwhile the grinding efficiency and the grinding effect of the platform are improved.

The invention discloses a method, a device, equipment and a medium for determining parameters of a heat affected zone of a circumferential weld of a pipeline, which are applied to the technical field of computers, and the method comprises the following steps: acquiring an experimental welding joint and a simulation forming part of a to-be-tested annular pipeline under the same working condition; determining the width of the heat affected zone at the center line of the cross section of each welding layer in the experiment according to the heat affected zone range of each welding layer in the experiment welding joint; determining the temperature range of the heat affected zone of the simulated forming part according to the width of the heat affected zone at the center line of the cross section of each welding layer in the experiment; determining the width of the heat affected zone according to the temperature range of the heat affected zone; and the peak temperature and the cooling time t8 / 5 are obtained according to the thermal cycle data in the width range of the heat affected zone. According to the method, simulation results based on different process parameters can be analyzed to obtain the change rule of the parameters of the heat affected zone under the different process parameters, and certain guidance is provided for further optimizing the process parameters and improving the welding quality.

To provide a cooling capacity evaluation device which can evaluate the cooling capacity of a coolant against grinding heat generated in a processing target part by grinding.SOLUTION: A cooling capacity evaluation device 3b, which evaluates a cooling capacity in a processing target part of a workpiece ground while supplying a cooling liquid by a grinder, comprises: a first estimation part 81 for estimating a transformation point temperature of the processing target part and a cooling time required for a tissue of the processing target part having reached the transformation point temperature to turn into a tissue providing a grinding burning; a second estimation part 82 for estimating temperature transition at a depth position of the grinding burning generated in the processing target part from the transformation point temperature, the cooling time, and a processing condition; a burning depth acquisition part 80 for acquiring the burning depth; a calorific power estimation part 85 for estimating a calorific power generated in the processing target part by grinding on the basis of the processing condition or grind energy required for grinding the processing target part; and a cooling volume estimation part 86 for estimating a cooling volume of the processing target part by the cooling liquid on the basis of the burning depth, the calorific power, and the temperature transition estimated by the second estimation part.SELECTED DRAWING: Figure 3

The utility model discloses an arc-shaped injection mold for processing a plastic handrail of a treadmill, which relates to the technical field of injection molds and comprises a male mold in sliding connection with a female mold. The male die and the female die are respectively provided with a water cooling device; according to the utility model, after heat exchange, cooling liquid is gathered from the water inlet to the circulation seat and then enters the cold radiator shell, the water channels and the fins are regularly arranged in the cold radiator shell, so that the contact area between the cooling liquid and air is increased, and meanwhile, the fan accelerates air flow, so that heat in the cooling liquid is dissipated out; an efficient water cooling circulation system is matched with a water channel, fins and a fan in the cold row shell, heat in a mold can be quickly dissipated out, the cooling time of the plastic handrail is shortened, the injection molding period is shortened, and the production efficiency is improved. And the production efficiency is improved.

The utility model relates to a high-temperature industrial waste salt flaking device which comprises a first cooling roller, a second cooling roller, a secondary cooling roller, a first scraper, a second scraper and a third scraper, wherein the first cooling roller, the second cooling roller and the secondary cooling roller are rotationally arranged in a machine shell, and the first scraper, the second scraper and the third scraper are arranged in the machine shell and abut against the first cooling roller, the second cooling roller and the secondary cooling roller respectively. The second cooling roller and the first cooling roller are symmetrically arranged, a material passing gap is formed between the second cooling roller and the first cooling roller, and the material passing gap and the feeding port are oppositely arranged; the secondary cooling roller is positioned below the material passing gap and is used for cooling the high-temperature industrial waste salt falling from the material passing gap; the driving device is arranged on the machine shell and connected with the first cooling roller, the second cooling roller and the secondary cooling roller. The spiral conveyor is arranged at the bottom of the machine shell. According to the flaking device, the high-temperature industrial waste salt is secondarily cooled by arranging the secondary cooling roller, the cooling time is short, the efficiency is high, and the service life of the spiral conveyor is prolonged.

The application discloses a steel bar production line intelligent scheduling system based on artificial intelligence. In the application, the dynamic adaptation problem of multi-specification steel bar mixed production is solved through a virtual-real fusion decision mechanism. In view of the demand of alternate rolling of screw thread steel and bright round steel, the system analyzes order parameters in real time, dynamically optimizes the matching logic of roll gap adjustment sequence and cold bed stepping rhythm, and ensures that the steel bars with different surface characteristics reduce transition waste during process switching. Through equipment health degree prediction and material mechanics simulation, the peak value of the main drive of the rolling mill is automatically reduced and the cooling time is prolonged when high-strength steel bars are rolled, so that the roll peeling or internal cracks of the steel bars caused by stress mutation are avoided. For small batch orders, the system intelligently compresses the shutdown window of die and groove changing, pre-adjusts the process parameters by using the idle gap of the equipment, and significantly reduces the production capacity breakpoint caused by specification switching.

The application provides a cooling device of a cloth bag dust collector and belongs to the technical field of cloth bag dust collectors. The cooling device of the cloth bag dust collector comprises a base and a dust collector body, the dust collector body is fixedly connected to the base, the lower end of the dust collector is provided with an air inlet pipeline, the upper end of the dust collector body is provided with an air outlet pipeline, the base is fixedly connected with a cooling box, the cooling box is provided with a conveying channel, one side of the cooling box is fixedly connected with a gas feeding pipe, the gas feeding pipe is communicated with one end of the conveying channel, the other end of the conveying channel penetrates through the side wall of the cooling box and is communicated with the other end of the air inlet pipeline, and the dust collector body is provided with a sealing assembly capable of sealing the other end of the air inlet pipeline. The application has the advantages that the conveying channel is a multi-section U-shaped pipe, the dust-containing gas has a longer cooling time in the cooling box, and the cooling effect is better; and the cooling air of the cooling fan is mixed with the dust-containing gas through the fan blades, so that the temperature of the dust-containing gas is reduced.

The utility model discloses a traditional Chinese medicine decoction piece drying rack, and belongs to the technical field of traditional Chinese medicine processing. A traditional Chinese medicine decoction piece drying frame comprises a bottom plate with first walking wheels at the bottom and further comprises a material frame rotationally arranged on the bottom plate, multiple sets of material trays used for containing traditional Chinese medicine decoction pieces are arranged on the material frame, and a driving part used for driving the material frame to swing is arranged on the bottom plate. The material rack inclines by a certain angle; according to the utility model, the material rack is rotatably arranged on the bottom plate, so that during natural cooling, the material rack can be in an inclined state, and at the moment, the material trays are not distributed in an up-and-down alignment manner but spread towards one side in sequence, so that on one hand, air circulation is facilitated, the cooling time is shortened, and decoction pieces are uniformly cooled; on the other hand, a worker can conveniently check the state of the decoction pieces on the material disc, and the using effect is improved.

The invention provides a method and device for predicting the crack risk in the preparation process of a nuclear power steel material, and the method comprises the steps: building and training a high-precision crack risk prediction model through the quantification of the interaction of the die casting temperature, the cooling time, the austenite grain size, the precipitate size and the ferrite film thickness; through the trained crack risk prediction model, the crack risk coefficient of the to-be-tested nuclear power steel material can be predicted based on the preparation process parameters and the structural characteristic parameters of the to-be-tested nuclear power steel material, and the process adjustment necessity assessment is carried out according to the crack risk coefficient of the to-be-tested nuclear power steel material. Crack defects are pre-judged in advance, die casting process parameters are optimized, and ingot casting quality is improved.

The utility model relates to the technical field of drying equipment, and discloses a high-weather-resistance drying box for processing optical glass, which comprises a drying box assembly, a drying assembly is arranged in the drying box assembly, a conveying assembly is arranged at the bottom of the drying assembly, a cooling assembly is arranged at the top of the conveying assembly, and a cooling device is arranged at the bottom of the cooling assembly. Automatic feeding and discharging of processed materials are achieved through the conveying assembly, operators are prevented from making direct contact with a high-temperature dry area, safety accidents such as hot air burning are effectively prevented, the heating pipes are evenly distributed in the closed space, separated by the partition plates, of the box body, the heating efficiency is effectively improved, hot air is conveyed to a working area through the annular porous pipeline, and the working efficiency is improved. And through the cooling assembly, air flow in the box body is accelerated, the drying effect is improved, the temperature of a drying area can be rapidly reduced after drying is completed, the cooling time is shortened, and the equipment use efficiency is improved.

This application discloses a cooling method, apparatus, electronic equipment, readable storage medium, and hot-rolled steel strip production system for a laminar flow cooling roller conveyor, applicable to the field of metallurgical technology. The method includes acquiring temperature detection values ​​from hot metal detectors deployed at the inlet and outlet of the finishing mill. When the first and second temperature detection values ​​first meet the condition of no steel strip in the laminar flow cooling zone, a cooling water delivery command is sent to the laminar flow cooling water system according to a preset unit cooling time to cool the laminar flow cooling roller conveyor. When the first and second temperature detection values ​​again meet the condition of no steel strip in the laminar flow cooling zone, and the current time reaches a preset cooling interval, a cooling water delivery command is sent. This application overcomes the shortcomings of related technologies that cannot guarantee the cooling of the entire cooling roller conveyor, enabling precise control of the laminar flow cooling roller conveyor for cooling.

The utility model discloses a casting mold with a cooling structure. The casting mold comprises a workbench, a lower mold is installed on the surface of the workbench, an upper mold is attached to the surface of the lower mold, a box body is fixedly connected to the upper portion of the workbench, the casting mold with the cooling structure further comprises a cooling mechanism, and the cooling mechanism is arranged outside the lower mold. And the adjusting mechanism is arranged outside the box body. The casting mold with the cooling structure relates to the technical field of casting molds, achieves accurate adjustment of flow of cooling liquid through cooperation of the cover body, the rotating disc, the sliding block, the blocking block, the driving part and the auxiliary part, and solves the problem that when an existing cooling structure is used for cooling parts in the casting mold, the cooling effect is poor. The problems that due to the fact that the size of a cooling channel in a casting mold is fixed, the cooling time of parts made of different materials is different, the cooling time of the parts is possibly insufficient or too long, and the quality of the parts is affected are solved.

This utility model discloses an auxiliary device for coal quality testing and analysis, including a cooling tank. A placement slot is provided on the side of the cooling tank, and a coal sample placement assembly is movably placed inside the placement slot. A cooling component is provided on the side of the cooling tank, and an exhaust component is provided on the top of the cooling tank. The coal sample placement assembly includes a placement rack, a cover plate, and a positioning component. This utility model achieves faster cooling of the coal sample by setting up a coal sample placement assembly and a cooling component. The coal sample placement assembly is moved by a pull-out mechanism to place the coal sample. The cooling component provides dehumidified air into the cooling tank to accelerate gas flow and simultaneously injects fresh air, allowing the heated air to be discharged from the top exhaust component. This accelerates the cooling of the coal sample by increasing gas flow within the cooling tank, solving the problem in existing technologies where natural cooling after coal drying results in a long cooling time, thus extending the overall coal quality testing time.

The present application belongs to the technical field of conveying mechanism, and particularly relates to a cooling tunnel conveying mechanism, which comprises a conveying frame, a rotating shaft is arranged on the front side of the conveying frame, a conveying net plate is rotatably connected to the rotating shaft through a bearing, the side of the conveying net plate away from the rotating shaft is connected to the conveying frame through an angle adjusting assembly one, and a driving mechanism for limiting and driving bottled juice horizontally placed on the conveying net plate is further arranged on the conveying frame. The driving mechanism comprises two conveying belts which are arranged on the conveying frame in a rotation mode and are symmetrical in front and back. Through the cooperation of the conveying net plate with an adjustable inclination angle and the driving mechanism, the bottled juice is horizontally placed in the isolation area of the conveying net plate, the bottled juice is slowly rolled under the action of gravity by moving along the limiting rod through the inclination of the conveying net plate, the internal liquid of the bottled juice is continuously disturbed, the liquid in all positions of the bottled juice is more easily transferred with the external cold air, the overall cooling is effectively accelerated, and the cooling time is shortened.

The utility model relates to a constant temperature cooling device for a culture medium, and relates to the field of culture medium preparation equipment, the constant temperature cooling device comprises a cabinet body, a cooling assembly and a rotating assembly, a door plate is hinged to one side of the cabinet body, the cooling assembly and the rotating assembly are both arranged on the cabinet body, and the cooling assembly comprises an air cooling part and a water cooling part and is used for cooling the culture medium in the cabinet body; the rotating assembly comprises a driving part and a plurality of placing frames, the driving part drives the placing frames to be rotationally connected into the cabinet body, and the placing frames are used for bearing sterilized culture media. The cooling time of the culture medium can be shortened under the condition of ensuring the quality of the culture medium, and the experiment efficiency is improved.

The invention provides a manufacturing method of a badminton racket grip, which is used for manufacturing a main body part, a front sleeve and a rear end cover and combining the main body part, the front sleeve and the rear end cover into the badminton racket grip. A main body part is manufactured by adopting a micro-foaming injection process (MuCell), the main body part comprises an inner core and a shell, the inner core is formed by using a first material through the micro-foaming injection process, the shell is formed on the outer side of the inner core through the micro-foaming injection process by using a second material, and then the main body part and the inner core form an integrated structure; according to the method, the problems that pressure maintaining time is needed in a traditional plastic injection molding process, so that the cooling time and the molding period are shortened, center deviation is likely to happen, and the yield is poor can be solved; according to the invention, the injection molding process of two different materials can be completed on the same micro-foaming double-color injection molding machine, the members made of different materials can provide excellent structural strength, enough rigid support can be provided when the grip is swung, and the effects of cushioning, light weight and the like are achieved.

The invention provides a welding mechanism for assembling an automobile oil pipe joint, and belongs to the technical field of oil pipe joint welding. Comprising a machine body, a support is installed at the top of the machine body, a lifting support is slidably connected to the end of the support, a servo motor is installed at the top of the lifting support, a hydraulic oil cylinder is installed at the top of the support, an operation table is arranged on the surface of the machine body, and a connector is arranged at the top of the operation table; an oil pipe is arranged below the lifting support. By arranging the oil pipe clamping assembly and the oil pipe welding assembly, oil pipes and oil pipe joints of different sizes are installed and fixed, the adaptability of the welding mechanism is improved, meanwhile, negative pressure wind power absorbs operation smoke dust, the operation environment can be optimized, the cooling time during welding is shortened, and the efficiency is improved; and reciprocating welding improves compactness and strength of weld joints, realizes overlap rate of the weld joints, improves tensile strength of the weld joints and improves quality of the weld joints.

The invention belongs to the technical field of data center cooling, and particularly relates to a cabinet-level gas-liquid dual-channel cooling system and a control method thereof. Comprising a liquid cooling unit, an air cooling unit and a mechanical refrigeration unit, the three components exchange heat through a three-medium heat exchanger; the three-medium heat exchanger comprises a first channel, a second channel and an air channel; the mechanical refrigeration unit comprises a compressor, a condenser and a throttling device which are connected in sequence, and the first channel is arranged between the compressor and the throttling device to form a refrigerant circulation loop; the liquid cooling unit comprises a cooling water inlet, a cooling water outlet, a liquid cooling plate, a cooling liquid distribution unit, and a first cooling water passage and a second cooling water passage which are respectively connected with the cooling water inlet; the first cooling water passage is connected with the cold liquid distribution unit and the cooling water outlet respectively after passing through the second passage, and the second cooling water passage is connected with the cold liquid distribution unit; and the cold liquid distribution unit is connected with the liquid cooling plate. Combined cooling in multiple modes is achieved, the natural cooling time can be prolonged, and the refrigeration energy consumption of the air conditioner is reduced.

The application discloses a production process of a composite lightning arrester protective cover. The process comprises the following steps: mixing the main runner and the branch runner which are broken after being cut off in advance with new material particles in proportion, feeding into an injection molding machine to melt and form, and obtaining a protective cover with a runner; using an automatic taking and placing mechanism to take the protective cover out of the mold and move it to a cooling station, using an automatic cooling mechanism to forcibly air cool and shape the protective cover, and shortening the cooling time in the mold; then moving to a cutting station, using an automatic cutting mechanism to cut off the main runner and the branch runner at one time, realizing the rapid separation of waste and finished products; finally, clamping an identification sheet and packaging. The process realizes the full-process automation of "waste recycling-injection-taking-cooling-cutting-packaging", not only significantly improves the cooling uniformity and product size precision, avoids deformation and burrs, but also reduces the raw material cost through the recycling of runner waste, and has the advantages of high efficiency, stability and greenness.

The utility model discloses a presswork cooling device, and belongs to the technical field of presswork processing. The presswork cooling device has the advantages of accelerating cooling, improving the quality of finished products and improving the production efficiency, a plurality of cooling fans can be driven to reciprocate in the stroke range of the threaded lead screw by controlling the reciprocating motor, and after the presswork is printed, the cooling machine is matched with the cooling fans, so that the cooling efficiency is improved. The heat dissipation process of the printed matter is accelerated, printing ink can be rapidly dried, the problems of adhesion, curling and the like of the printed matter due to the fact that the printed matter is not dried at high temperature are solved, the quality of finished products is improved, common defects such as ghosting and deformation can be effectively avoided through rapid cooling, and the printed matter keeps good visual effect and definition; the reciprocating motion mode of the multiple cooling fans covers a larger cooling area, cooling is uniform, the cooling time is further shortened, the overall production efficiency of printing operation is improved, and the problem of low efficiency of a traditional natural cooling mode is solved.

The invention discloses an on-line controlled cooling process for a Q345B medium-thick-wall seamless steel pipe. The rolling process comprises the following steps: heating in an annular furnace, punching, continuous rolling, sizing, on-line controlled cooling, cooling in a cooling bed and finishing; the heating system of the annular furnace is limited; the roller way speed is set to be 0.6-1.0 m / s, 16 groups of spraying pipes spray water normally, the total maximum instantaneous flow is 880-900 m / h, the water temperature is 35-40 DEG C, the supercooling time is 38-42 s, the inlet temperature is 950-970 DEG C, the outlet temperature is 520-580 DEG C, and the cooling speed is 9.25-11.25 DEG C / s. According to the on-line controlled cooling process for the Q345B medium-thick-wall seamless steel pipe, the wall thickness of the medium-thick-wall seamless steel pipe is 12-25 mm, off-line heat treatment is replaced with the on-line controlled cooling process, and the mechanical property required by Q345B is achieved.

The invention discloses a methanol ship stainless steel pipe weld bead cooling device, and belongs to the technical field of welding auxiliary equipment. The device comprises an opening and closing type cooling mechanism, an adjusting telescopic fixing mechanism and an air inlet adjusting mechanism, the opening and closing type cooling mechanism can be directly opened and buckled on the outer side of the stainless steel pipe, and the dismounting and mounting efficiency and the operation flexibility are greatly improved; the telescopic fixing mechanism is adjusted, the butterfly nut is rotated to drive the screw to drive the pipeline gasket to move in the annular radial direction, stainless steel pipes with different diameters are adapted, the gasket can be tightly attached to the outer wall of the pipeline, and it is ensured that the air outlet hole in the inner ring of the annular pipeline is accurately aligned with a welding bead. An air inlet stop valve of the air inlet adjusting mechanism can flexibly control the air flow, and directional and uniform cooling of a welding bead can be achieved by matching with circumferential and uniform arrangement of air outlet holes. According to the device, compressed air passes through the cooling device to uniformly and synchronously cool the stainless steel weld bead, so that the cooling time of the stainless steel weld bead is greatly shortened, and the welding efficiency is improved.

The invention discloses a hot plate cooling device and substrate heat treatment equipment. The hot plate cooling device is used for reducing the surface temperature of a hot plate and comprises a cooling plate, a heat exchanger and a heat exchanger, the moving mechanism is used for moving the cooling plate; the controller is in communication connection with the moving mechanism; wherein the controller is configured to control the moving mechanism to load the cooling plate to the surface of the hot plate to enable the cooling surface to correspond to the surface of the hot plate so as to reduce the surface temperature of the hot plate to a preset temperature, and then control the moving mechanism to unload the cooling plate from the surface of the hot plate. The effects of shortening the cooling time of the hot plate and improving the working efficiency of the hot plate are achieved.