30results about How to "Precise control of cooling rate" patented technology

The invention belongs to the metallurgy technical field and in particular relates to an intermediate blank cooling system and cooling control technology. The intermediate blank cooling system is characterized in that an aerial fog cooling device body is arranged between a rough mill and a finishing mill. The aerial fog cooling device body is composed of an upper cooling header and a lower coolingheader, and an aerial fog nozzle and a compression air pipe are arranged on the cooling water pipe of the upper cooling header and the lower cooling header; and the on/off control valve and flow control valve of the cooling water pipe and the compression air pipe are connected with a control valve station. The intermediate blank aerial fog cooling technology is controlled by the aerial fog controltechnology sprayed on the cooling header arranged near roller ways at the front and rear of the mills. The invention has fast cooling speed without changing metal performance, water yield regulatingrange is wide and the water yield can be regulated continuously, the cooling speed of the intermediate blank can be precisely controlled, and the invention can be widely applicable to middle and thickplate production line.

The invention relates to an improved kyropoulos method for sapphire crystal growth. The method comprises the following steps: raw material preparation, furnace body vacuumizing, furnace body heating, seed welding, monocrystal growth, crystal growth, separation and annealing, and crystal taking. In the whole crystal growth process, crystals are not taken out of a crucible and are still in a hot zone, so the cooling speed of the crystals can be accurately controlled to reduce the heat stress; a solid-liquid interface is bounded by a melt when the crystals grow, so the temperature disturbance and the mechanical disturbance of the melt surface can be reduced or eliminated by the melt before reaching the solid-liquid interface; if the crystals move or rotate in the crystal growth process, the crystal growth process is easily influenced by the mechanical vibration, so the improved kyropoulos method allows the pulling of a crystal seed rod in a rotary manner to be stopped after the monocrystal formation in order to effectively avoid the influence of the crystals by the mechanical vibration; and the utilization rate of the sane alumina raw material is high.

The invention discloses shear history simulation experiment device and method for non-Newtonian crude oil. The device comprises a motor, an infinitely variable transmission, a computer, a temperature measurement collection device and a stirring device, wherein the stirring device comprises a stirring tank, a stirrer, a hot bath heating coil and an arc double-hole floating cover; the stirring tank comprises a water bath jacket; the stirrer is inserted into the stirring tank; the hot bath heating coil encircles around the inner wall of the stirring tank; the arc double-hole floating cover is arranged at the top of the stirring tank; a hole I and a hole II are formed in the floating cover; the motor is connected with a driving shaft of the infinitely variable transmission; a driven shaft of the infinitely variable transmission is connected with the stirrer through the hole I; the computer is respectively connected with the infinitely variable transmission and a temperature collection device; the temperature collection device is connected with the stirring device. The shear history simulation experiment device and method have the beneficial effects that the shearing action of in-line flow shear and pump high-speed shear under a turbulence state on the rheological property of the non-Newtonian crude oil can be measured by using the device, and a whole transportation process of a crude oil pipeline is simulated.

The invention relates to a workblank forging air cooling process, in particular to a workblank forging air cooling process for a non-quenched and tempered automobile engine connecting rod. The invention also relates to air cooling equipment adopted for implementing the air cooling process. The air cooling equipment comprises a system machine frame, a transmission chain, an air tube, a blast blower and a computer control device. The forge element cooling speed is precisely controlled through the air cooling equipment, the equipment can realize the computer automatic programming control, and the chain speed and the air outlet quantity of each air cooling passage can be regulated according to different air cooling requirements of the forge elements, so the hardness and the metallographic structure of the forge elements reach the standard requirements. The process and the equipment provided by the invention belong to the workblank forging air cooling process for the automobile engine connecting rod and the air cooling equipment with the advantages that the structure is simple and reasonable, the operation is convenient, the cooling speed of the forge elements can be effectively controlled, and meanwhile, the quality of the forge elements can be ensured.

Measurement and control type cooling equipment for a screw extruder comprises three cooling modes, namely, the water cooling mode, the air cooling mode and the water cooling and air cooling mixed mode. The cooling equipment is composed of a detection device, a cooling device, a controller, a controllable display device and a trough structure. The cooling device comprises a water spraying device, an air supply device and a refrigeration device. The controller is electrically connected with the controllable display device. A water tank is arranged on the lower portion of the trough structure. According to the measurement and control type cooling equipment, the limitation that existing cooling equipment is singular in cooling mode is fundamentally overcome, thus, the cooling mode can be selected according to properties of polymers, the cooling equipment can accurately measure the temperature and adjust the cooling speed in real time in the cooling process, the effect that the cooling speed of the different polymers can be adjusted in time according to the properties and the extrusion conditions of the polymers, and accordingly, the stably and reliable quality is achieved; and through the mode that the temperature is precisely measured, and differentiated cooling is conduced according to different areas, energy source consumption and resource consumption are effectively reduced.

A cooling temp controller for the electric arc furnace with non-consumable electrode to control the cooling speed of alloy and eliminate the defects is composed of air-tight stainless steel jacket, stainless steel casing with circular top opening, electric resistance wire furnace, and the refractory insulating material between said electric resistance wire furnace and stainless steel casing. The heater, temp controller and temp measurer are linked with said electric resistance wire furnace via the terminals on said stainless steel jacket.

The invention relates to the technical field of sapphire processing, in particular to a method for preparing artificial sapphire with cold heart shouldering and lifting. Good genetic characteristics can ensure the quality of sapphire single crystal growth; through the cleaning process in the furnace, it can reduce the pollution during the crystal growth process, ensure the purity of the crystal, and reduce crystal defects; on the other hand, it is convenient to accurately control the cooling rate and reduce heat. At the same time, through the micro-lifting method of the lifting rod, it can reduce the disturbance of the temperature field and the probability of defects, thereby improving the quality of the crystal; on the other hand, during the cooling process, the crystal can be annealed in situ to reduce the occurrence of oxygen vacancies. defects, while simplifying procedures and saving energy, thereby further reducing the growth cost of sapphire crystals; the invention can also prevent crystal cracks and ensure crystal quality through reasonable control of the temperature in the furnace.

The invention discloses a hot stamping forming hydraulic machine system and belongs to the field of hot stamping forming hydraulic machine systems. By means of the hot stamping forming hydraulic machine system, stable operation of the system can still be ensured when the press speed is increased to 1000 mm/s, workpieces can be rapidly and evenly cooled, and the die temperature yield is made to tend to be constant always. In order to solve the problem of pressing of a press on the conditions of the high speed and the high takt, the production takt is effectively improved, and therefore the yield is improved. By using the hot stamping production time, the takt is improved to 6-7 times/minute, the output is increased by 30% or more on average, the problem of insufficient cooling or uneven cooling during forming of workpieces is effectively solved, the workpieces have high strength and good appearance after molding, the die heat balance problem is effectively solved, as long as the power is continuously supplied, the production line can achieve production always, the press energy consumption is effectively reduced, the purposes of energy conservation and environment protection are achieved, pipe appearance is attractive, and maintenance is easy.

The invention discloses a cooling system for friction stir welding. The cooling system comprises a fixing table, a first liquid spraying part, a second liquid spraying part and a adjusting and controlling device, wherein the fixing table is used for fixing a workpiece to be welded; each of the first liquid spraying part and the second liquid spraying part is provided with a plurality of nozzles capable of being connected with a cooling liquid source on the upper side and the lower side of the fixing table, and the liquid spraying directions of the nozzles located on the upper side and the lower side of the fixing table are vertically opposite; the nozzles of the first liquid spraying part are single-hole nozzles, and the nozzles of the second liquid spraying part are multi-hole nozzles; and the adjusting and controlling device comprises an angle adjusting and controlling part and a height adjusting and controlling part, the angle adjusting and controlling part can adjust and control the angles of the nozzles of the first liquid spraying part and/or the second liquid spraying part, and the angle adjusting and controlling part can adjust and control the heights of the nozzles of the first liquid spraying part and/or the second liquid spraying part. The invention further provides a using method of the cooling system, the cooling speed can be accurately controlled, the medium-thickness workpiece can be rapidly cooled in the thickness direction during friction stir welding, temperature distribution is uniform, and therefore the good mechanical property is obtained.

The invention relates to the technical field of ultralow-temperature cryopreservation of sea cucumber germplasm resources, in particular to a cryoprotectant, an activator formula and an ultralow-temperature cryopreservation for apostichopus japonicus sperm method based on a program cooling instrument and CASA. The cryoprotectant is composed of a diluent, an antifreeze agent and an additive. The diluent is natural seawater, the antifreeze agent is one or more of aprotic polar solvents, and the additive is glucose. According to the method, the freezing stock is large (more than 200 mL of fresh stichopus japonicus seminal fluid can be frozen in one batch), the cooling process can be precisely controlled, the application effect is good after thawing, and the problems of asynchronous maturationof male and female sea cucumbers in south and north and a series of stichopus japonicus germplasm degradation in actual production can be solved.

The invention provides a chalcogenide glass air cooling device and an air cooling control method of chalcogenide glass. The chalcogenide glass air cooling device comprises a device body, a center positioning device, a synthesis container, a guide mechanism and an air cooling system; the device body includes an inner barrel body and an outer barrel body arranged on the outer side of the inner barrel body in a sleeving manner, and a closed and communicating air cooling cavity is formed between the outer side wall of the inner barrel body and the inner side wall of the outer barrel body; an air cooling chamber is formed in the inner barrel body, and the air cooling cavity communicates with the air cooling chamber; an air inlet communicating with the air cooling cavity is formed in the outer barrel body; the air cooling system communicates with the air cooling cavity through the air inlet; and the synthesis container is vertically arranged in the center of the air cooling chamber through the center positioning device and a fixing device. According to the chalcogenide glass air cooling device, the synthesis container is stably and safely fixed to the center of the air cooling chamber through the center positioning device and the fixing device, and uniform flowing of airflow is achieved by installing the guide mechanism, so that the uniformity of the temperature of all parts in the melt cooling process is guaranteed.

The invention discloses a vacuum cooling crystallization method. The vacuum cooling crystallization method comprises the following steps: 1) adding a to-be-crystallized liquid into a crystallizer, turning on a compressor and a vacuum pump, enabling the compressor to suck steam in the crystallizer so that moisture in the crystallizer is vaporized and flash-evaporated, wherein the compressor is controlled by using variable frequency; 2) enabling the secondary steam formed by flash-evaporation to enter the compressor for compression and heating, then enabling the heated steam to enter a condenserfor condensation, discharging a condensate that forms secondary steam into a condensation water tank, discharging a non-condensable gas in the system out of the system through the vacuum pump; and 3)turning off the compressor and the vacuum pump after the crystallization process is completed. According to the vacuum cooling crystallization method disclosed by the invention, the variable frequency speed control technology is adopted by the compressor, the cooling rate of the feed liquid can be accurately controlled, the burst nucleation is prevented, the crystal size is uniform and the product quality is stable. The steam jet pump cooling crystallization method is only suitable for crystallization of substances with rapid nucleation rate and less strict requirement for crystal grain size,and the method disclosed by the invention is stronger in adaptability and wider in application range.

The invention discloses a flow guide type freezing crystallizer which comprises a crystallizing tank, a cooling system, a stirring system and a control system; the crystallizing tank comprises a tankbody; a cold insulation layer is arranged on the inner wall of the tank body; a manhole, a feeding hole, a liquid level meter hole, a clear liquid hole, a crystal mush hole and a thermometer hole areformed in the tank body; the cooling system comprises an inlet header pipe, a racemization coil pipe, a flow guide coil pipe, an outlet header pipe and a bracket; the stirring system comprises a variable frequency motor, a speed reducer, a water seal, a rigid shaft, a push type paddle and a bottom cone; the control system comprises a liquid level sensor, a feeding switch valve, a temperature sensor, a refrigerant regulating valve, an ampere meter, a variable frequency controller, a clear liquid switch valve, a crystal mush switch valve and a logic controller; compared with a conventional intermittent groove type freezing crystallizer, the flow guide type freezing crystallizer has the advantages of being large in heat exchange area, large in capacity, few in scabs and the like, has a certain crystal selection function and a crystal slurry thickening function, and facilitates subsequent crystal slurry solid-liquid separation operation.

The invention discloses an intelligent automobile accessory mold system and a using method. The system comprises a mold device, a heat exchanger, a pressure sensor, a cooling water control valve and acontrol device, wherein a closed cooling medium channel is formed in the mold device, each of the two ends of the cooling medium channel is provided with a pressure sensor,and the two ends of the cooling medium channel are connected with a hot fluid inlet and a hot fluid outlet of the heat exchanger through a hot fluid pipeline; a cold fluid inlet of the heat exchanger is connected with a coolingwater source through the pipeline; the cooling water control valve is arranged on a pipeline between the cold fluid inlet of the heat exchanger and the cooling water source; and the pressure sensor and the cooling water control valve are connected with the control device.

The invention relates to a uniform-heating screen with a cooling structure for a thermally-stimulated furnace, which is characterized by comprising a shell (1) and a hollow flange (2), wherein the hollow flange (2) is connected to the top of the shell (1); an inner cavity of the hollow flange (2) is divided into an air-inlet cavity (2-1) and a heat-insulating cavity (2-2); a plurality of uniformly-distributed air-inlet holes (2-1a) are arranged on the lateral wall of the air-inlet cavity (2-1), and heat-preserving cotton (3) is arranged in the heat-insulating cavity (2-2); and a plurality of uniformly-distributed cooling-air channels (4) are arranged on the outer wall of the shell (1), an air inlet (4-1) of each cooling-air channel (4) is communicated with the air-inlet cavity (2-1), and an air outlet (4-2) of each cooling-air channel (4) is open. The uniform-heating screen has the characteristics that a workpiece can be more uniformly heated, and meanwhile, the cooling speed can be accurately controlled.

According to the technical scheme, a numerical control machine tool is characterized by comprising a machine tool body, a spindle box, an upper spindle and a lower spindle, the spindle box, the upper spindle and the lower spindle are arranged on the machine tool body, the upper spindle and the lower spindle are the same in structure and are symmetrically arranged, and the upper spindle and the lower spindle are in transmission connection through a first belt; a driving mechanism is installed on the machine tool body, and the driving mechanism comprises a driving motor, a driving wheel, a driven wheel and a second belt, the driving wheel is connected to the output end of the driving motor and is controlled by the driving motor to rotate, the driven wheel is rotationally mounted on the machine tool body through a rotating shaft, and the second belt is wound on the driving wheel, the driven wheel and the lower main shaft; and an adjusting mechanism for automatically adjusting the tension of the second belt is further arranged on the machine tool body. The numerical control machine tool and the machining method thereof have the beneficial effects that the working efficiency is high, transmission is stable, the tensioning force of the transmission belt can be automatically adjusted, meanwhile, cooling is controllable, the cooling effect is good, the working temperature is controllable, and working is stable.