20results about How to "Control cooling rate" patented technology

The invention discloses a pyraclostrobin preparation device which comprises a reaction kettle and further comprises a temperature control cooling box, the temperature control cooling box is provided with a containing space, a partition part is arranged in the temperature control cooling box, the partition part divides the containing space into a cooling channel and a temperature control channel, and the temperature control channel is communicated with the cooling channel. The temperature control cooling box and the separation part are both made of heat conduction materials, a hydrothermal solution is introduced into the temperature control channel, and the temperature of the hydrothermal solution is higher than the crystallization temperature of pyraclostrobin. According to the pyraclostrobin preparation device provided by the invention, the reaction kettle and the temperature control cooling box are combined for use, so that a pyraclostrobin solution can circularly move between the reaction kettle and the temperature control cooling box, and precipitates and irregular crystals are fed into the reaction kettle for re-processing; the production speed of the pyraclostrobin crystals is increased, and meanwhile continuous production can be achieved.

The invention discloses a high-yield laminated mold, and relates to the technical field of molds, the high-yield laminated mold comprises a middle mold base, external mold bases are slidably connected to the two sides of the middle mold base, mold cavities are formed in the two sides of the middle mold base, and hot runners communicating with the mold cavities are installed in the middle mold base; a cavity is formed in the middle mold base, an ejector pin penetrating through the middle mold base and extending into the cavity is slidably connected into the middle mold base, a boss is fixedly installed in the ejector pin, a positioning column used for being connected with a nut in a sleeved mode is fixedly connected to the boss, and the sealing unit comprises a sleeve and a piston plate which are slidably connected into the positioning column. The larger the internal pressure of the first sealing ring is, the tighter the first sealing ring and the inner wall of the nut is, plastic in a molten state is prevented from entering threads of the nut under the pressure, after a material is cooled and shaped, the roller and the first sealing ring can automatically restore to the original shape, the force needed by demolding ejection of a product is reduced, and the ejector pin can eject the product perfectly and conveniently.

The utility model discloses a production device capable of overcoming ferrite stainless steel hot rolling soft and hard edges, which comprises a fixed check block arranged on a supporting leg, a plurality of supporting frames arranged between the fixed check block and the supporting leg, a movable check block movably installed on the supporting frames in a meshed mode, and a two-way screw movably installed at the bottom of the movable check block in a meshed mode. The two-way screw penetrates through a through hole in the bottom of the fixing check block and is installed on the supporting legs on the two sides through bearings, one end of the two-way screw is fixedly connected with the output end of the motor, the motor is fixedly installed on one side of the supporting leg, and the movable bottom plate is installed on the supporting leg below the supporting frame. The other end of the hydraulic telescopic rod is movably installed on the supporting leg. According to the utility model, the adjustable movable baffle blocks are matched with the fixed baffle blocks, so that the storage work of steel coils with various specifications and diameters can be realized, and a plurality of adjustable movable plates are arranged between the fixed frames, so that the contact between the steel coils and air can be adjusted, and the purpose of controlling the cooling speed of the steel coils is achieved.

The application discloses a method for integrally injection-molding a metal small shaft and a composite small blade, extending an easy-to-break tail section of the same material from a non-injection-molding end of the metal small shaft, processing a notch and a plane on the surface of the injection-molding end of the metal small shaft, placing a tooling on the outside of a mold cavity of an injection-molding mold and corresponding to the position of the metal small shaft, adjusting the clamping position of the metal small shaft on the tooling, starting injection molding, keeping the tooling clamping the tail section of the metal small shaft during the injection molding, and removing the tail section after the injection molding. The method accurately integrally injection-molds one end of the metal small shaft and an end of the composite small blade, ensures that the length direction of the metal small shaft exposed from the end of the composite small blade meets the specified length, and ensures that the metal small shaft does not rotate in the composite small blade or is not separated from the composite small blade due to loosening of the joint position during use, so that the metal small shaft and the composite small blade form an integrated louver blade.

The utility model provides a bar cooling bed heat preservation cover widening device which comprises an extending suspension beam and a widening heat preservation structure, and the widening heat preservation structure is connected to the end portion of one end of the extending suspension beam through a movable joint assembly. The end, away from the widened heat preservation structure, of the extending suspension beam is connected with an original heat preservation cover main beam of the cooling bed. The fixed end of the movable joint assembly is fixedly connected with the extending suspension beam, the movable end of the movable joint assembly is fixedly connected with the widened heat preservation structure, and the movable end of the movable joint assembly can rotate relative to the fixed end, so that the covering face of the widened heat preservation structure is always kept or approximately in a horizontal state. The heat preservation range of the cooling bed can be effectively enlarged, the cooling speed of bars on the cooling bed can be conveniently controlled, and the performance of the bars can be optimized.

The application belongs to the technical field of laser additive manufacturing, and particularly relates to an array type laser additive manufacturing method and device, which comprises the following steps: S1, digital model import and layering slicing; S2, scanning path planning and filling setting; S3, array type laser synchronous output control; S4, powder flow and powder feeding path control; S5, according to the width of the additive, the width of single track cladding is adjusted in real time; S6, according to the slice layer material of the additive, the matching material is delivered; S7, S1-S6 are repeated, and layer-by-layer accumulation is performed until the part manufacturing is completed. The application can accurately control the grain size, improve the material microstructure, and improve the mechanical properties; the generation of defects such as thermal cracks and pores is reduced, the stability of the deposition process is ensured; the interlayer bonding is optimized, the quality of multi-layer deposition is ensured; the residual stress is reduced, the size precision, shape stability and fatigue performance of the part are improved; the post-processing requirement is reduced, and the processing cost is reduced.

The utility model belongs to the technical field of polyethylene antibacterial film production, and discloses a blowing traction device for polyethylene antibacterial film production, which comprises a die head, an air ring arranged above the die head, a herringbone plate arranged above the air ring, a traction component arranged on one side of the herringbone plate, a plurality of annular air pipes arranged at equal intervals up and down, and a plurality of air pipes arranged at equal intervals up and down, a plurality of uniformly distributed adjustable air outlets are formed in the annular air pipe, the annular air pipe is connected with an air guide branch pipe, an air volume control valve is arranged on the air guide branch pipe, the air guide branch pipe is connected with an air guide main pipe, one end of the air guide main pipe is connected with a fan, an inlet of the fan is connected with a filter, the air ring is designed into multiple layers, and the air volume and the air direction of each layer can be independently controlled; by optimizing the distribution and action of each layer of wind, the cooling speed and shape of the film bubbles can be better controlled, and the transparency and mechanical property of the film are improved.

The invention discloses a liquid cooling driving pump body investment casting process which comprises the following steps: firstly, according to the size and the shape of a pump body, manufacturing a mold with a cavity consistent with the pump body and a loose piece for forming a complex inner cavity structure of the pump body, then injecting wax, molding a wax mold in the mold cavity by adopting a one-time mold splitting molding process, according to the pump body complex inner cavity wax mold, loose pieces are mutually positioned, combined and formed, then wax injection mold splitting is carried out to obtain a wax body, the wax body is connected to a mold head through a pouring gate system to form a tree group, then shell making and dewaxing are carried out on the tree group to form a mold shell, and then roasting, smelting pouring and post-treatment are carried out on the mold shell to form a casting. And the casting is further machined through overhauling, heat treatment, shaping and finish machining, and finally the qualified pump body is obtained if the casting is detected to be correct. Through one-time mold splitting of the wax piece with the complex structure in the inner cavity of the pump body, the mold splitting efficiency is improved, the cost is reduced, meanwhile, the pump body casting is corrected by adopting a one-time composite sizing mold after being subjected to smelting pouring, orderly cooling solidification and heat treatment, and the leakage risk of the pump body casting is greatly reduced.

The invention relates to the technical field of investment casting, in particular to an investment casting process for a workpiece with overlarge thickness difference at each part, which comprises the following steps of: arranging a pouring gate of a large feeding ladle and a wax mould of a riser, and pouring a sintered mould shell by adopting sand burying, so that a casting can be fully supplemented with molten metal in the solidification process, shrinkage cavity and shrinkage porosity are prevented, and the casting quality is improved. Meanwhile, quartz sand is adopted for heat preservation, the cooling speed is controlled, and the solidification temperature difference between the interior and the surface layer of the thick part is reduced.

The utility model discloses a cooling device for prepreg production, and belongs to the technical field of industrial production. The device comprises a rack and a heat exchanger, a cold air cover and a cold air pipeline are further included. A cooling plate is fixedly arranged on the rack; the cold air cover is positioned above the cooling plate, and a space formed by buckling the cold air cover and the cooling plate is a cooling cavity; the cooling cavity, the heat exchanger and the fan are connected end to end through a cold air pipeline, and low-temperature cooling water is introduced into a cooling pipe of the heat exchanger; an adjusting valve for adjusting the air volume is arranged on the cold air pipeline; on the basis that the original cooling plate cools the lower surface of the prepreg, the cold air cover is additionally arranged above the cooling plate to cool the upper surface of the prepreg, so that the cooling speed of the prepreg is increased, and the production process is accelerated.

The utility model belongs to the technical field of plastic pipeline forming, and discloses an internal and external temperature control cooling external sizing mold, which is arranged on a pipeline mouth mold and in front of a sizing sleeve, and comprises a sliding rod assembly, a cooling outer ring, a water retaining assembly and a temperature control core mold, the cooling outer ring and the water retaining assembly are arranged on the sliding rod assembly in a sliding mode, the cooling outer ring is used for cooling a pipe blank extruded from the pipeline mouth die and adjusting the cooling range through sliding, the water retaining assembly is arranged behind the cooling outer ring, a cooling water space is formed by the water retaining assembly and the cooling outer ring, and the temperature control core die is arranged in the pipe blank. And cooling the inner surface of the pipe blank. Temperature control cooling is conducted on the inner surface and the outer surface of the pipe blank at the same time, the pipe blank cooling speed is controlled, the pipe toughness and the inner surface smoothness and flatness are improved, meanwhile, the pipe blank can still be located above the softening point, and complete cooling outer sizing can be normally achieved through the sizing sleeve.

The utility model relates to a roller with active water-cooling temperature control and force control sensing functions, which is used for an automatic thermoplastic composite prepreg tape laying device, a water-cooling pipeline is arranged in the roller, and heat insulation glue with a certain thickness is wrapped outside the roller. The cooling speed of the device is controlled by changing the temperature and the flowing speed of water in a water cooling pipeline in a roller, a laying device and a cooling device are combined, so that the whole laying device is more compact, the roller is connected with the prepreg tape laying device through a wheel support, and a force feedback system is arranged above the wheel support. The force feedback system feeds back the mechanical information of the roller in real time and properly adjusts the pressure. The roller disclosed by the utility model can improve the accuracy and the working efficiency of the laying device.

The utility model relates to the technical field of PGA material film blowing adjusting air rings, and discloses a PGA degradable material film blowing adjusting air ring which comprises a ring body, a base, an air inlet pipe, an adjusting screw, an adjusting groove, a first air opening, a second air opening, an air opening air inlet hole and a third air opening, and is characterized in that the bottom of the ring body is fixed through the base, and the air inlet pipe is arranged on the side face of the ring body; the ring body is internally provided with a rotary air inlet groove, a turn-over wall labyrinth air duct formed by a turn-over wall I and a turn-over wall II, and an air duct I, an air duct II and an air duct III which are separated by the turn-over wall labyrinth air duct; and a plurality of air outlets are formed below the ring body. According to the film bubble cooling device, the side air inlet rotating structure is matched with the wall-turning labyrinth air channel, so that external air forms rotating airflow and is uniformly dispersed to the air outlets, the cooling speed of different areas of film bubbles is effectively controlled, the problem of thickness errors caused by non-uniform cooling in the film blowing process of PGA materials is solved, and the accurate adjustment of the thickness of the film bubbles is realized.

The invention discloses composite brazing filler metal and a method for brazing connection of Ag and Ni-Cr alloy, and belongs to the technical field of brazing. The composite brazing filler metal is composed of, by mass, 40%-45% of silver, 25%-30% of copper, 20%-25% of zinc, 2%-3% of tin and 1%-5% of titanium. The method for brazing and connecting Ag and Ni-Cr alloy through the composite brazing filler metal comprises the steps that the composite brazing filler metal is evenly laid on the surface of a Ni-Cr alloy sheet, an Ag sheet is laid on the composite brazing filler metal, and a brazing structural part is obtained; and the brazed structural part is put into a vacuum brazing furnace to be heated, and the brazed structural part is taken out after temperature rising, heat preservation and cooling and cooled to the room temperature. By controlling the proportion of all metal elements in the composite brazing filler metal, the composite brazing filler metal with good wettability and joint filling capacity is obtained. According to the proportion of the composite brazing filler metal, the heating rate and the cooling rate during brazing are controlled, and the shear strength of a brazing structural part is improved.

The invention relates to a titanium alloy material plate splicing process, which is suitable for splicing titanium alloy plates with different thicknesses and complex structures, and is suitable for manufacturing large titanium alloy structural parts in the fields of aerospace, ocean engineering and the like, and comprises the following steps: pretreating the surfaces of the titanium alloy plates, accurately setting welding current, voltage and welding speed, and welding the titanium alloy plates. And double-side preheating and postwelding slow cooling technologies are adopted, so that uniform cooling of welding seams is ensured, and stress concentration is reduced. According to the technological method, welding technological parameters are optimized, welding heat input and the cooling rate are reasonably controlled, the defects of air holes, cracks, coarse grains and the like in the welding process are effectively restrained, therefore, the welding seam quality and the mechanical property of a connector are improved, the complexity of welding equipment and the production cost are reduced, application and popularization are convenient, and the method is suitable for popularization and application. And the splicing requirements of large-size and complex-structure titanium alloy plates can be met, and the welding efficiency and the finished product quality are remarkably improved.

The utility model discloses a large-volume concrete cooling device which comprises a galvanized steel pipe which is connected through an internal-thread galvanized pipe connector and is at least provided with a water outlet and a water inlet. The water outlet and the water inlet are connected with the circulating water tank; the temperature monitoring system comprises a controller, a thermodetector arranged in the mass concrete, a temperature sensor arranged in the circulating water tank and a temperature adjusting device arranged between the circulating water tank and the water inlet, and the controller is connected with the thermodetector, the temperature sensor and the temperature adjusting device and used for adjusting the temperature of outlet water of the circulating water tank. A galvanized steel pipe with high heat exchange efficiency is adopted as a concrete internal circulating water pipe, and the temperature in mass concrete is reduced through the principle of water circulating circulation and heat transfer; the circulating water tank is arranged, water flows continuously, and the cooling rate in the concrete is effectively controlled; and through the temperature monitoring system, the temperature of the concrete can be monitored and controlled in real time, and stable cooling of the large-size concrete is ensured.

The utility model relates to the technical field of saw blade quenching, in particular to a saw blade quenching cooling anti-deformation device which comprises a working table, two sides of the top of the working table are fixedly connected with a bottom plate, the top of the bottom plate is provided with a rotating assembly, the rotating assembly comprises a supporting rod, and the supporting rod is fixedly connected to the top of the bottom plate. A connecting block is fixedly connected to the top of the supporting rod, a first motor is fixedly connected to the interior of the connecting block, and a first electric push rod is fixedly connected to the transmission end of one side of the first motor. According to the saw blade quenching cooling anti-deformation device, through cooperation of the first motor, the supporting rod and the sprayer, water mist is sprayed to a quenched saw blade in the rotating process, the temperature of the saw blade is reduced when the saw blade rotates, fine particles of the water mist can be more evenly distributed on the surface of the saw blade, the temperature of the saw blade is rapidly and evenly reduced, and the saw blade is prevented from being deformed. And the thermal stress generated by overlarge temperature difference is reduced, so that the risks of deformation and cracks are reduced.

This invention provides a high-performance copper-phosphorus alloy based on grain optimization and its preparation method. The copper-phosphorus alloy comprises the following components in the indicated mass percentages: Cu 75%-85%, P 10%-15%, Al 2%-5%, Ti 1%-3%, rare earth elements 0.1%-0.5%, and the remainder being Fe; the rare earth elements are one or more combinations of cerium, lanthanum, and dysprosium. The preparation method includes batching, smelting, preliminary cooling, casting and rolling, rapid cooling, heat treatment, machining, and surface treatment. The copper-phosphorus alloy of this invention achieves high performance through grain optimization and is suitable for industrial applications requiring high strength, high hardness, and good plasticity and toughness.

The present invention discloses a baking furnace applied to the production of copper-clad ceramic substrates, belonging to the technical field of baking furnaces, comprising a base plate, four legs fixedly connected to the base plate, an arc-shaped mounting plate fixedly connected to the legs, two channel steel brackets fixedly connected to the base plate, and an ethanol steam generator and a linkage water supply box fixedly connected to the two channel steel brackets. The present invention arranges a spiral heating resistor wire and a heating unit in the baking furnace, so that the heat source is distributed more evenly, which can ensure that the heat is effectively transferred to each corner, so that the temperature difference between the central area and the edge area is minimized, and by arranging a convection regulating mechanism, the airflow distribution in the baking furnace is more controllable, and the airflow can be more dispersed and stably covered in the baking furnace, and by arranging an ethanol steam generator and a linkage water supply box, the cooling rate can be controlled more safely, and the cooling rate and temperature uniformity can also be ensured.

The utility model belongs to the technical field of annealing equipment, and discloses phosphor copper alloy bar annealing equipment which comprises a shell, an inlet and an outlet are formed in the outer end of the shell, a fan is fixedly installed at the outer end of the shell, an air guide pipe is fixedly installed at the outer end of the fan, and a first rotating wheel is rotationally connected to the bottom of the inlet and the outlet. A first rotating wheel is arranged on the upper side of the outer shell, a second rotating wheel is arranged on the upper side of the first rotating wheel, a first motor is fixedly installed at the outer end of the outer shell, and a transmission rod is fixedly installed on an output shaft of the first motor. The cooling speed of the alloy bar is conveniently controlled by adjusting the wind power, a first motor is started to drive a transmission rod to rotate, a first gear drives a second gear to rotate, a sealing plate is opened or closed, the alloy bar is conveniently heated by an electromagnetic heating ring, and the alloy bar is kept in a stable state after annealing.