78results about How to "Reduce heat exposure" patented technology

The present invention provides a bit with cutting structures or inserts that include diamond particles, in which the diamond-impregnated inserts are surrounded by substantially diamond-free support members. The diamond-impregnated inserts are manufactured separately from the bit body. Once formed, the diamond-impregnated inserts are affixed to the substantially diamond-free support members on bit body by brazing or other means of attachment. The total thermal exposure of the diamond particles during manufacture in accordance with the present invention is significantly lower than the total manufacturing-related thermal exposure in previously known diamond-impregnated cutting structures. Furthermore, the substantially diamond-free support members allow the bit to continue cutting through a formation without an increased contact area, as experienced by bits with diamond-impregnated ribs. Thus, the operating life of the cutting structures, and therefore the life of the bit itself, is increased.

The principle of the deposition technique uses ultrafine crystals of ceramic oxides deposited relatively cold on melted or partially melted surfaces of ceramic tiles and other glazed ceramics, creating a spotty deposition without a significant change of optical properties of the surface. Because the desired nano-substance is deposited cold in a solid state form on the hot “sticky” surfaces and rapidly cooled down, deposited material is directly melted into the substrate surface, but its outer side remains unchanged. It allows creating a deposition with the desired parameters, for amplifying and extending the antibacterial protection in the dark, these surfaces may contain noble and heavy metals, deposited either dry as a part of the powder, or in a separate step, directly on the surface by wet depostion followed by drying and calcination.

A method for the selective encapsulation of electronic components on a printed circuit board comprising, in one embodiment, the steps of delivering the printed circuit board to an encapsulating nest at room temperature; damming the target areas with a dam resin having a latent curing agent and deposited in the shape of walls of predetermined heights, according to the desired fill heights; dispensing a fill resin to fill the dammed areas; and curing the dam and fill resins for a suitable amount of time. In a different embodiment, the invention comprises the additional steps of laying resin beads, each in a position corresponding to the footprint of each target component; and of positioning the target components over the beads and soldering the components.

The invention discloses an external nozzle twin-wire co-pool narrow-gap GMAW (gas metal arc welding) torch, belongs to the technical field of welding, and solves the problems that the conventional twin-wire narrow-gap GMAW torch is complex in structure and poor in welding protection effect. The external nozzle twin-wire co-pool narrow-gap GMAW torch comprises a main welding torch body, two conducting rods, two current contact nozzles, and dual gas sieve plates and gas plugs, wherein the main welding torch body is formed by integrating an upper cover, a gun pipe body and a nozzle into a whole through threaded connection; the gas plugs with holes formed in the radial direction are inserted into the gas inlets of the upper cover; the gas sieve plates with a parallel interval are arranged in the gun pipe body; the guiding rods are inserted into an insulating sleeve; the current contact nozzles are connected to the lower ends of the guiding rods. The external nozzle twin-wire co-pool narrow-gap GMAW torch has the advantages that the holes are punched in the side walls of the gas plugs in the gas inlets, so as to reduce the gas velocity; in the section of gas guiding, the dual gas sieve plates are adopted for further reducing the gas velocity and uniformly mixing gas; both the current contact nozzles point to narrow-gap side walls, so as to promote fusion of the side walls; in the welding process, the nozzle is arranged above a narrow-gap groove, so as to achieve an excellent narrow-gap twin-wire GMAW technology in the state of a common welding pool.

Embodiments of methods and apparatus for providing a sacrificial shield for a fuel injector are provided. According to one example embodiment, a method for shielding a fuel injector associated with a combustion device is provided. The method can include providing at least one shield support device operable to mount to a tip of a fuel injector. The method can also include mounting a plurality of shields to the at least one support device, wherein each of the plurality of shields is spaced apart from each respective adjacent shield by at least one segmentation, and wherein each of the plurality of shields is operable to reduce heat exposure to the tip of the fuel injector.

The invention belongs to the field of food packaging, and particularly relates to a full-degradable antibacterial food packaging film and a preparation method thereof. The packaging film is prepared from 20-50 parts of starch, 50-80 parts of biodegradable polyester, 5-40 parts of plasticizer, 1-10 parts of compatibilizer, 2-20 parts of organic modified montmorillonite, 1-5 parts of lubricant and 0.5-12 parts of natural antibacterial agent. The food packaging film is prepared through one-step extrusion granulation, and is obtained by adopting an extrusion blow molding film making process. The full-degradable antibacterial food packaging film produced by the invention has excellent antibacterial property, mechanical property and barrier property, the used antibacterial agent is high in safety, the adopted film preparation mode is continuous and efficient, and the full-degradable antibacterial food packaging film is suitable for commercial production and can be applied to various food packaging scenes.

The invention discloses a heat preservation nursing bottle which belongs to nursling articles for daily use, the heat preservation nursing bottle comprises a nipple, a bottle cap and a bottle body; an attemperator is arranged at the lower part of the bottle body and includes a base, and a ring-shaped heater which is tightly contacted with the bottle body is fixed at the upper part of the base; the center of the base is fixed with a temperature sensor which props against the bottom of the bottle body by a spring; the side of the base is provided with a mains jack, a liquid crystal display device and a control keystoke, and a control circuit board that adopts a microprocessor as the core is arranged inside the lower part of the base. The heat preservation nursing bottle can accurately regulate the temperature of the milk and the timing time by the keystoke, and the reserved holding temperature, the current temperature of the milk and the time can be displayed on the liquid crystal display device; at the same time, the heat preservation nursing bottle has the advantages of small volume, light weight, low price and strong performance, etc.

An injector for a urea-water solution includes at least a main body with a fitting for the urea-water solution, a valve with a valve drive and a separate feed pipe for the urea-water solution. The separate feed pipe extends at least partly through the main body.

The objective of this invention is to provide a control device for an internal combustion engine capable of suppressing deterioration of the catalyst in an internal combustion engine equipped with a turbocharger when the turbocharger is at a high temperature and when the speed is reduced and the fuel is cut. The internal combustion engine is equipped with: a turbocharger turbine provided in the exhaust passage of the internal combustion engine; a catalyst provided in the exhaust passage farther downstream than the turbine; a bypass passage that bypasses the turbine by connecting the exhaust passage farther upstream from the turbine and the portion of the exhaust passage from the turbine to the catalyst; and a wastegate valve capable of opening/closing the bypass passage. The wastegate valve is opened when the speed is reduced and an operation to cut the fuel is executed, and when the temperature of the turbocharger is higher than a set value.

The invention relates to the technical field of lithium battery transportation, in particular to a clamping transportation device with a protective structure based on lithium ion battery production. The clamping transportation device comprises a device body, the device body comprises a cart seat, a first placing frame is fixedly installed at one end of the cart seat, and a movable plate is fixedlyinstalled at one end of the cart seat on one side of the first placing frame. Through the arrangement of an anti-collision spring, first movable rods, second movable rods, reeds, connecting grooves and an anti-collision plate, the anti-collision spring can be used for achieving a buffering effect during collision, so that the possibility that the battery is damaged is reduced as much as possible;meanwhile, by utilizing the characteristic that the first movable rods and the second movable rods are adjustable, the anti-collision spring can more evenly disperse acting force in and out, and influence on buffering effect of the device caused by offset point collision is avoided; and the anti-collision plate is conical, small impurities on road surface can be effectively pushed away, and influence on normal movement of the device is avoided.

The invention referring to a sequential combustor arrangement including a first burner, a first combustion chamber, a mixer arrangement for admixing a dilution air to the hot gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. The mixer is adapted to guide combustion gases in a hot gas flow path extending between the first combustion chamber. The second burner including a duct having an inlet at an upstream end adapted for connection to the first combustion chamber and an outlet at a downstream end adapted for connection to the second burner. The mixer includes at least one group of injection pipes pointing inwards from the side walls of the mixer for admixing the dilution air to cool the hot flue gases leaving the first combustion chamber. The injection pipes are distributed circumferentially along the side wall of the mixer and wherein the injection pipes having a conical or quasi-conical shape addressed to the center of the mixer.

The invention discloses an ultrasonic composite electric resistance welding method for TC4 and 718 steel. The ultrasonic composite electric resistance welding method for the TC4 and 718 steel particularly comprises the following steps of: 1) positioning the central part of a lap joint region of a TC4 titanium alloy plate, a metal intermediate transition layer and a 718 steel plate which are required to be welded on the axis of an upper electrode and a lower electrode of a three-phase direct current resistance welding machine; 2) intervening ultrasonic wave and pressurizing; and 3) performing welding operation, namely setting working parameters of an ultrasonic generator and the three-phase direct current resistance welding machine, applying welding pressure on the upper electrode, supplying power for the three-phase direct current resistance welding machine and the ultrasonic generator, switching on a circuit switch of the three-phase direct current resistance welding machine, starting to perform ultrasonic composite resistance welding on the TC4 titanium alloy plate and the 718 steel plate, and finishing the step after the set time is up. By the method, the problems of reduced joint performance and welding joint inclusion caused by intermetallic compounds which cannot be solved in the prior art are solved.

The invention discloses a preparation method of a novel nano-titania photocatalysis coating. The method comprises the steps that through a flame thermal spraying method, a pre-prepared suspension solution containing metal powder and nano-titania powder is used as a spraying raw material and sprayed on a pretreated matrix, and the nano-titania photocatalysis coating is obtained, wherein the solid-liquid mass ratio of the suspension solution is (1-50):100; the mass ratio of the nano-titania powder to the metal powder is (1-10):1. The preparation method has the advantages of easy operation, few technical processes, low cost and the like and is suitable for industrial production. By means of the preparation method, the thickness of the obtained nano-titania photocatalysis coating is 5-100 microns, the coating is good in photocatalytic performance and particularly good in photocatalytic organism degradation performance, the bonding strength of the coating with the matrix is high, and the coating is high in stability and has high application value and good market prospects in the field of photocatalytic degradation of organic pollutants.

The invention discloses a fireproof flame-retardant rail transit communication cable. The fireproof flame-retardant rail transit communication cable comprises a low-smoke zero-halogen outer sheath, a first fireproof layer, a high-magnetic-conductive steel tape armoring layer, a low-smoke zero-halogen inner sheath, a second fireproof layer, an aluminum sheath, a PE heat insulating layer, a waterproof layer and multiple strands of stranded insulating core wires. A low-smoke zero-halogen polyethylene material is prepared from 80-90 parts of polyethylene, 5-10 parts of phosphorus flame-retardant plasticizer BDP, 15-25 parts of PE-g-MAH, 10-30 parts of ammonium polyphosphate and 30-60 parts of expansible graphite. The second fireproof layer is made of a fireproof silicone rubber material. The fireproof silicone rubber material is prepared from 30-100 parts of methyl vinyl silicone rubber, 4-15 parts of vitrified powder, 1-4 parts of rigid mineral powder, 8-30 parts of kaolin, 2-8 parts of 500DEG C eutectic and 4-15 parts of DCBP. All the layers are retardant to flames, most of heat can be absorbed, and optical fibers can keep optical connectivity for a long time.

The invention discloses a method and device for semi-molten ingot casting of polycrystalline silicon. Crushed aggregates of the polycrystalline silicon are evenly laid at the bottom of a quartz crucible and then sequentially vacuumized and heated, and a heated fragment layer is obtained; the temperature of an ingot furnace heater rises, the power ratio of a top heater and a side heater is adjusted to let the bottom have continuous refrigerating capacity, and it is guaranteed that seed crystal is not molten; after the temperature is reduced, the power ratio of the top heater and the side heater is adjusted, the temperature is kept unchanged to grow crystal; the temperature of the ingot furnace heater continues to be reduced, the power ratio coefficient of the top heater and the side heater is adjusted to control the crystal growth speed to grow crystal; after the crystal grows, annealing and cooling are performed sequentially, and the semi-molten ingot casting of polycrystalline silicon is obtained. According to the method and device for semi-molten ingot casting of the polycrystalline silicon, the heater structure does not need to be changed, the operation is simple, and the goal of effectively discharging impurities and improving product quality can be achieved through specific process parameters.

The invention discloses an electromagnetic type water heater and an electromagnetic resistance dual-core water heater, wherein the electromagnetic type water heater is formed by connecting a double-wall or sleeve or box-shaped magnetism-conductive water discharge body, a resonance coil and an integrated controller by virtue of power lines; and the electromagnetic resistance dual-core water heater is formed by connecting the water inlet of a resistance water heater and the water outlet of the electromagnetic type water heater, or placing the resistance water heater in the electromagnetic type water heater to be connected with and the integrated controller by virtue of power lines. For the electromagnetic type water heater and the electromagnetic resistance dual-core water heater, the magnetic energy in various directions of an electromagnetic field are scientifically utilized so that the energy efficiency is improved, and heat insulation is carried out on the resonance coil and the integrated controller by utilizing a heat insulation material and temperature difference of cold and hot water, and a dual-core simple and reliable technical structure in which a low-middle temperature zone is heated by electromagnetic energy and a mid-high temperature zone is subjected to resistance heating is adopted, thereby efficiently solving the problems that the resonance coil and the integrated controller are low in energy efficiency, low in hot water temperature, high in cost and the like, and can be easily damaged due to overheat. The electromagnetic type water heater and the electromagnetic resistance dual-core water heater have the obvious beneficial effects that the energy consumption is low, the cost is low, energy is saved, the hot water temperature is high, and more applications can be met.

A method for welding the leading superconductor wire includes such steps as soldering a superconductor onto a transition copper block while applying a thin tin layer to another surface of said copper block to be soldered and soldering between two transition copper blocks by use of the solder with low smelting point.

The invention discloses a deflection type astronomical watch device for sunshine heat dissipation by a pressure. The structure comprises a sunshine heat dissipation hole air compression device, a watchband connecting block, a watchband, a fixing buckle and a fixing ring. The sunshine heat dissipation hole air compression device comprises an astigmatism concave sheet, a dial body, an air compression device and an adjusting dial needle. The device has the following benefits: sunshine can be deflected by the astigmatism concave sheet, so that the sunshine entering the dial is spread out, the phenomenon of focusing is avoided, the heating degree of the surface is effectively reduced, the dial is amplified, and the observation effect is improved; the pressure between the dial and a protective shell is increased by an air bag and a sealing rubber plate, so that sea air is prevented from invasion; the hot air flow is changed into cold air before entering by a straight plate, an upper skew plate, a transverse plate and a lower skew plate, so that heat of the watch can be dissipated; the contact area of the watch and the arm is reduced by a heat dissipation device, and the arm is effectively prevented from sweating.