81results about How to "Effective melting" patented technology

The present invention is laminar flow plasma spraying equipment and method. A laminator flow plasma generator with different powder feeding modes, inside the gun or outside the gun and single port ormultiple ports, is used. While maintaining the laminar flow plasma jetting state in small power, air flow rate is increased to raise the heat efficiency of the jet. According to powder sort, materialproperty and particle size, proper jet energy and distribution and carrying air flow rate are selected to obtain high-quality coating. The present invention has les sintroduced impurity, high jet energy utilization, capacity of spraying high-smelting point coating at relatively low power condition, less oxidation of non-oxide coating and full heating of the powder material.

The invention discloses an electronic voucher purchase and payment system based on an all-in-one card platform. The system comprises an all-in-one smart card, a transaction terminal and an all-in-one card service platform, wherein the all-in-one card service platform is provided with a security certification system and a financial management system. The system of the invention is characterized in that the system is also provided with an electronic voucher management system, and the electronic voucher management system is provided with a voucher release management system, a voucher consuming management system and a voucher business database. The invention also discloses an electronic voucher purchase and payment method. The method mainly comprises the following four steps: establishing a business model, issuing a voucher, using the voucher and performing account settlement. The remarkable effects of the method of the invention are as follows: the operation cost of voucher promotion mode of merchants is reduced greatly; and the perfect electronic voucher management means is provided for merchants so that the merchants can control the voucher in all dimensions from source to using. The system is convenient to operate, is safe and reliable and has extremely high practicability.

The invention belongs to the technical field of special steel forge piece and heat treatment, and particularly relates to a low-cost electroslag remelting hot-working die steel material and a preparing method thereof. The hot-working die steel comprises, by weight percent, 0.35 to 0.40% of C, 0.10 to 0.30% of Si, 0.30 to 0.50% of Mn, 4.80 to 5.50% of Cr, 1.60 to 1.80% of Mo, 0.40 to 0.60% of V, not larger than 0.015% of P, not larger than 0.005% of S, not larger than 0.25% of Cu, not larger than 0.25% of Ni, not larger than 2ppm of [H], not larger than 20 ppm of [O], not larger than 120 ppm of[N] and the balance Fe and inevitable impurities. The forge piece impact toughness reaches above 20 J after component adjusting according to the above range from the common forge piece V port impactsmaller than 14 J, meanwhile, the early cracking resistance is greatly improved, a made mold is adjusted to reach above 10 times from the original time being short of 50000 times, in the preparing process, the water cooling superrefining treatment is adopted, the grain structure of the large-specification mold is obviously improved, the ASTM comparison method is used for measuring, the grain sizereaches above 6 stages, and the spheroidized structure reaches above AS5 stage in the North American die casting association standard NADCA#207 chart.

The invention discloses a semiconductor laser synchronous welding set and an operating mode thereof. The semiconductor laser synchronous welding set comprises an upper die fixture and a lower die fixture. The lower die fixture is provided with a positioning device. The upper die fixture has a plurality of fiber output ends which right face a welding area of a device to be welded. The operating mode includes: placing the device to be welded in the lower die fixture and securing the device through the positioning device; allowing a lifting device to drive the lower die fixture to get close and connect to the upper die fixture; reflecting laser by an inner chamber to form compressed continuous spots, and irradiating the welding area of the device to be detected with the spots so as to melt the surface of the device. During using of the semiconductor laser synchronous welding set and the operating mode thereof, laser synchronous welding is used, welding speed is high, a seam in the welding area has constant width, single-step forming is achieved, welding quality and firming capacity are effectively improved, and no any additional fluxes are required.

The invention discloses a reinforced optical fiber composite high-temperature-resistant overhead insulating cable which comprises a carbon fiber composite reinforced core. A plurality of round flexible aluminum wires and a stainless steel sleeve light unit are stranded on the outer side of the carbon fiber composite reinforced core in a concentric mode. A plurality of special-shaped flexible aluminum monofilaments which are distributed in a round shape are arranged on the outer sides of the round flexible aluminum wires and the outside of the stainless steel sleeve light unit, and a high-temperature-resistant insulating layer is arranged on the outer sides of the special-shaped flexible aluminum monofilaments. The reinforced optical fiber composite high-temperature-resistant overhead insulating cable is simple in structure, long in service life and suitable for reconstruction and construction of power grid overhead lines in urban and rural areas, can bear the tension strength of 2400Mpa, allows long-time operation temperature to be more than 180 DEG C, has communication and monitoring functions, can effectively solve the dropping problem of the cable, and guarantees safe operation of lines.

The invention relates to a tundish covering agent used for chrome-bearing steel and application thereof and belongs to the technical field of tundishes in the continuous casting process. The tundish covering agent comprises, by mass percent, 30%-45% of CaO, 5%-10% of SiO2, 30%-35% of Al2O3, 5%-10% of MgO, 1%-4% of B2O3 and 6%-15% of (Na2O+Li2O). The tundish covering agent has the advantages that the melting point is low and is 1200-1300 DEG C, the viscosity is high and is 0.7-1.5Pa*s at the temperature of 1300 DEG C, and the alkalinity is high and is 3.0-5.0. The tundish covering agent is applicable to the process of the tundishes produced through continuous casting of the chrome-bearing steel. The tundish covering agent is applied to the continuous casting production process of the chrome-bearing steel, Cr2O3 inclusion can be effectively absorbed and dissolved, Cr2O3 is prevented from entering a crystallizer, the cleanliness degree of molten steel is improved, and therefore the quality of cast blanks is improved.

The invention provides a low-titanium-content double-layer covering agent for silicon steel and a use method of the low-titanium-content double-layer covering agent. The low-titanium-content double-layer covering agent comprises an upper layer covering agent part and a lower layer covering agent part; the lower layer covering agent part is contacted with molten steel; the upper layer covering agent part is located above the lower layer covering agent part; the upper layer covering agent part comprises the following raw materials, by weight percentage, 44-62% of SiO2, 2-10% of MgO, 1-10% of CaO, greater than 0 and less than or equal to 7% of Fe2O3, 20-38% of Al2O3, greater than 0 and less than or equal to 1% of C (all), greater than 0 and less than or equal to 0.5% of TiO2, and the balance ignition lost; and the lower layer covering agent part comprises the following raw materials, by weight percentage, 15-25% of SiO2, 3-8% of MgO, 48-68% of CaO, 2-10% of Fe2O3, greater than 0 and less than or equal to 1% of Al2O3, greater than 0 and less than or equal to 1% of C (all), greater than 0 and less than or equal to 0.2% of TiO2, and the balance ignition loss. With the use of the low-titanium-content double-layer covering agent, the content of titanium in molten silicon steel can be reduced effectively.

The invention discloses a softening and early-fusing protective device for a 3D printing material filament. The softening and early-fusing protective device comprises a feeding guide tube, an air tube, a guide tube clamp, a heat dissipation tube, a throat tube, a heating block sheath, a heating block and a spray nozzle, wherein the feeding guide tube enters the air tube outside a processing cavityand enters the processing cavity along with the air tube, and air is fed to the heat dissipation tube along the air tube from the outer part of the processing cavity for cooling; heat dissipation fanblades of the heat dissipation tube extend axially while stretching outwards in the radial direction; an air baffle circular disc at the bottom of the heat dissipation tube changes an air feeding direction, so that air is prevented from being blown to the heating block; and the heating block sheath is additionally arranged on the heating block. The softening and early-fusing protective device effectively solves the problem that the spray nozzle is blocked as a fan cannot be adopted for cooling in the processing cavity, and the material filament is softened and fused early before reaching thespray nozzle during high-temperature plastic 3D printing, guarantees uniformity of heat, in a processing process, of the heating block, and is not affected by a printing temperature. The device does not need a complex water cooling channel, has the characteristics of being simple in structure, low in cost and easy to assemble, and has relatively high practicability and good economic benefits.

The invention relates to a corrugated pipe orifice wrapping sealing machine and a production line. The corrugated pipe orifice wrapping sealing machine comprises a case, a driving mechanism, an orifice connector, a movable compressing mechanism, a hot melting system and a cooling system. A plane is arranged at an end of the case, the orifice connector is arranged at an end of the case, the drivingmechanism is mounted in the case and is in transmission connection with the orifice connector, and the orifice connector can be driven by the driving mechanism to rotate; an orifice in an end of a corrugated pipe can sleeve the orifice connector, and pipe wrapping plastic is laid on the outer surface of the orifice in the end of the corrugated pipe; the hot melting system is arranged on the case;the movable compressing mechanism is mounted at an end of the case, and a compressing wheel is arranged on the movable compressing mechanism and can be driven by the movable compressing mechanism tomove towards the orifice connector or away from the orifice connector; the cooling system is mounted on the case. The corrugated pipe orifice wrapping sealing machine and the production line have theadvantages that the corrugated pipe orifice wrapping sealing machine is reasonable in design, plastic edge sealing treatment can be effectively carried out on orifices of corrugated pipes, and accordingly the corrugated pipe orifice wrapping sealing machine and the production line are high in production efficiency and good in quality.

The invention relates to a method for diluting and eliminating center line segregation of a continuous casting slab by utilizing an additive material. The method comprises the following steps: acquiring the parameters of production working conditions; determining supply speed va, the thickness d of the additive material and the width w of the additive material, wherein w is larger than d; calculating a segregation index of the tail end of a liquid core based on a standard solute concentration C<standard> to obtain a solute concentration Coi, and adopting an inverse method to obtain a solute concentration Ca of the additive material; obtaining a selection concentration C<selection> according to a formula that C<selection> is larger than or equal to Ca and smaller than C<standard>; selectingand/or manufacturing the additive material according to the thickness d of the additive material, the width w of the additive material and the selection concentration C<selection>, and continuously conveying the additive material to the tail end of the liquid core in a vibrating manner. According to the method for diluting and eliminating center line segregation of the continuous casting slab byutilizing the additive material provided by the invention, the center line segregation is alleviated and eliminated by utilizing proportioning of alloy components, and meanwhile the additive materialcan eliminate center loosening. The additive material is completely molten after reaching the tail end of the liquid core; under a vibration effect, the molten liquid group is totally mixed with casting liquid inside the tail end of the liquid core, so two great internal quality defects about center line segregation and center loosening inside the continuous casting slab are simultaneously prevented.

The invention discloses a wood surface hydrophobic treatment method and relates to the technical field of wood treatment. The wood surface hydrophobic treatment method comprises the following steps: (1) pre-treatment; (2) microwave treatment; (3) vacuum impregnation; (4) low-temperature plasma treatment; when wood is treated through the wood surface hydrophobic treatment method disclosed by the invention, not only can the hydrophobic properties of wood surfaces be effectively improved, but also the corrosion resistance of the wood surfaces can be effectively improved, so that the application range and the working life of the wood can be effectively improved.

The invention provides a control method and device for air source heat pump equipment, the air source heat pump equipment and a readable storage medium. The control method comprises the following steps of: obtaining an environment temperature and a first temperature of an evaporator inlet of the air source heat pump equipment; and on the basis of a situation that the environment temperature is greater than a first threshold value and the first temperature meets a pre-defrosting condition, controlling the air source heat pump equipment to regulate an operation parameter. By use of the embodiment of the invention, a pre-defrosting mode is set, so that the air source heat pump equipment can carry out pre-defrosting on an evaporator through the heat of the external environment under a non-stopcondition, so that a phenomenon that when the evaporator is slightly frosts, four-way valve reversing causes the temperature of user side air to be lowered or the temperature of a water tank on a user side to be lowered, and the heat generation quantity and the energy efficiency of the heat pump are low in attenuation can be avoided, in addition, a pressure impact on the system due to four-way valve reversing can be reduced, so that system operation reliability and the service life of the equipment can be improved, and user use experience is improved.

The invention relates to the field of petroleum exploitation, in particular to a device for removing solidified oil stains on the inner wall of a petroleum pipe. The device comprises a base, a containing plate, a positioning assembly, a clamping and heating assembly, a rotary scraping assembly and the like. The containing plate is connected to the base, the positioning assembly is arranged on the base, the clamping and heating assembly is arranged on the base, and the rotary scraping assembly is arranged on the base. By means of a heating arc-shaped plate, the heating arc-shaped plate can be tightly attached to the petroleum pipe on the containing plate, the heating arc-shaped plate can clamp the petroleum pipe on the containing plate so as to facilitate follow-up operation, meanwhile, the heating arc-shaped plate can heat the petroleum pipe on the containing plate, and therefore the solidified oil stains on the inner wall of the petroleum pipe on the containing plate are molten into a liquid state; and the effect that the solidified oil stains on the inner wall of the petroleum pipe can be effectively melted so that the oil stains can be conveniently cleaned away in the follow-up process is achieved.

The invention discloses an intelligent swinging hammer type deicing device for a highway bridge. The device can adjust the effective cleaning range and the effective cleaning capability of a swinging hammer assembly according to the width of a road surface and the icing condition of the road surface. During deicing, the swinging hammer assembly rotates along with rotation of a swinging hammer control assembly, so that a swinging hammer inner arm is thrown out by means of centrifugal force, an ice breaking ball on a hinge arm is driven to impact an ice body, and deicing is achieved; when the ice breaking ball is used for deicing, under the combined action of a damper and a torsion spring, after the ice body is hammered by the ice breaking ball, multiple times of oscillation hammering are carried out, so that the deicing capability is improved; and in the deicing process, a fan continuously rotates, negative pressure is generated, ice block disintegrating slag and the like on the ground are sucked into a flow guide pipe, fall into a temporary storage bin and are heated and melted by a heater to form liquid to be sprayed out, hot water is sprayed near the swinging hammer assembly, ice slag attached to the ice breaking ball can be effectively melted, and dissolution of ice blocks on the road surface can be accelerated.

The invention discloses a high thermal stability density silicon carbide ceramic circuit board substrate material, which has lower sintering temperature and lower coefficient of thermal expansion by compositing and using micron grade silicon carbide powder, cordierite powder and nanometer level alumina powder, enables various materials to uniformly disperse and coat because polyethylene glycol composite solvents containing nano ceramic powder transparent liquid are strong in wettability and bonding ability for power, achieves effective melting enhancing effects, is compact and tight in prepared green bodies, can obtain high relative density and high thermal stability composite ceramic substrates in relatively lower sintering temperature, and is safe and environmentally friendly and large in utilization potentiality.

The embodiment of the invention provides a ventilation device and electronic equipment comprising the ventilation device. The ventilation device comprises a louver and heating pieces, the louver comprises a fixing frame and a plurality of louver blades, the louver blades are installed on the fixing frame at intervals in a first direction, an air duct is formed between every two adjacent louver blades, each air duct comprises an air inlet and an air outlet, the air inlets and the air outlets are arranged in a staggered mode in a direction perpendicular to the first direction, and the heating pieces are arranged on the surfaces of or in the louver blades. The invention aims to obtain the ventilation device capable of effectively melting ice and snow and the electronic equipment.

The invention discloses a tough and high-elastic composite silicon-carbide-based ceramic circuit board base board material. According to a silicon-carbide-based ceramic base board, micron-grade silicon carbide powder and nano-scale aluminum nitride powder are used in a composited mode, so that the base material can have more efficient thermal conductivity, polyethylene glycol composite solvent containing yttrium sol and nanometer ceramic powder transparent liquid is great in wettability and bonding capability for powder, all materials can be evenly dispersed and cladded, the effects of effective melting enhancement and strength improvement are achieved, the composite ceramic base board high in compactness, elasticity and strength can be obtained at the lower sintering temperature, and the material is good in electric insulating property, high in heat conduction and dissipation efficiency, safe and environment-friendly in production process and great in utilization potentiality.

The invention discloses a snow-melting and deicing emulsion coating and a construction method thereof. The snow-melting and deicing emulsion coating includes 5%-10% of a water-based adhesive, 80%-90%of a fluororesin emulsion, 1%-3% of a pH regulator, 2%-4% of a surfactant and 2%-3% of a synergist. According to the construction method, the emulsion coating is diluted by water firstly, then a formof mechanical spraying is adopted, and the spraying amount of the coating is 0.75-1.25 kg/m<2>, wherein the construction method specifically comprises the steps: performing mechanical spraying on thesurface of a road after formation of the road surface with certain strength, using a brush to spread the coating evenly in excessively-sprayed areas before consolidation of a resin-sealing emulsion, checking the coverage of the emulsion on the surface after consolidation of the resin-sealing emulsion, repairing non-spraying areas in time, and performing opening to traffic after complete curing andtransparency formation of the iced sealing resin emulsion.

The invention relates to a heat-preservation anti-freezing road and a construction method thereof, and belongs to the field of building materials and construction. The road is formed by sequentially laying a crushed stone layer, a cement stabilized layer, a heat insulation layer, a heating layer, an asphalt concrete layer and a heat-preservation coating layer on a leveled and cleaned pavement baselayer from bottom to top, external solar energy is used for heating, and silica aerogel is used as a substrate, so that the problem of energy consumption loss caused by the fact that heat of the heating layer is transmitted to the ground can be effectively solved, heat conduction oil adopted by the heating layer has an extremely strong absorption and conduction effect on solar energy heat release, and an iced road surface can be effectively melted. Good application prospects are realized on road ice melting in cold regions.