30results about How to "Improve induction heating efficiency" patented technology

The invention relates to a manufacture method for manufacturing a steel plate with high strength and high toughness by using a hot-rolling coiled plate. The method comprises the following steps that: firstly, after a hot-rolling coiled plate is leveled on a leveling machine set, refining heat treatment is carried out on the hot-rolling coiled plate, i.e. the hot-rolling coiled plate is heated in induction heating equipment, the heating time is within 60-140s, and the hot-rolling coiled plate is heated to 910DEG C to 960DEG C and austenized; then, the hot-rolling coiled plate enters a water-cooling or steam-cooling quenching machine set to carry out quenching, the quenching and cooling speed of the hot-rolling coiled plate is greater than or equal to 5DEG C / s, and a quenched martensite organization is obtained after quenching; tempering is carried out after quenching, induction heating is carried out by adopting the induction heating equipment in the tempering, the heating temperature of the quenched martensite organization is 220DEG C to 440DEG C, the tempering time is 80 to 180s, and a tempered martensite organization is obtained; and finally, straightening, flaw detection, surface inspection and sampling inspection are carried out to finally obtain the steel plate with excellent performance, high strength and high toughness. The invention has the advantages that as refining treatment adopts an induction heating method, the heating time is short, austenite crystal grains are fine, the mechanical property is superior to that of a similar product produced by the traditionaltechnology, the plate type of the steel plate is good, and the invention has high production efficiency, low equipment investment, little maintenance cost of the equipment, small occupation area and little environmental pollution.

A cavity component comprises: a cavity outer sleeve, forming an outer sleeve cavity by encircling the cavity; induction coils, enclosing the outside of the cavity outer sleeve; and a graphite sleeve, sleeved inside the outer sleeve cavity of the cavity outer sleeve. Also disclosed is a metal-organic chemical vapor deposition (MOCVD) device provided with the cavity component.

The invention discloses an electromagnetic induction heating press-roller, which has an integral double-end supporting structure and comprises a rotating device and a fixing device, wherein the rotating device consists of an action roller and a rotating shaft which are connected; the rotating shaft inputs a rotating torque to drive the action roller to rotate; the fixing device consists of a fixed shaft, a sleeve arranged on the outer side of the fixed shaft, magnetizers and excitation coils; through the magnetizers and excitation coils segmentedly installed outside the sleeve, a magnetic airgap is formed between the outside end face of the fixed magnetizer and the inner circular face of the rotating action roller; the alternating magnetic field forms a circuit through the magnetizer, the air gap and the action roller metal; the magnetic field in the action roller forms an eddy current so as to uniformly heat the working face of the rotating action roller. Since a structure of axially segmented magnetizers and excitation coils is adopted, a magnetic circuit is formed on the working face metal of the heating roller only to avoid the magnetic circuit penetration of the non-heating working part and reduce the excitation current, and simultaneously prevent the machine parts from overheating; besides, the induction heating efficiency can be improved so as to control the axial temperature gratitude of the heating roller continently.

The invention relates to a flux leakage controller used for controlling workpiece groove induction quenching flux leakage. The flux leakage controller comprises a quartz glass tube and a magnetic conduction device wrapping the outer layer of the quartz glass tube. The magnetic conduction device is a magnetizer or silicon-steel sheets; the magnetizer is a medium frequency magnetizer or a high frequency magnetizer; and mica sheets are uniformly distributed between the silicon-steel sheets, and the quantity ratio of the silicon-steel sheets to the mica sheets is 10:1-20:1. The silicon-steel sheets and the mica sheets are provided with holes matched with the quartz glass tube, and the silicon-steel sheets and the mica sheets are fixed on the quartz glass tube through the holes and binder. The invention also discloses a preparation process of the flux leakage controller used for controlling the workpiece groove flux leakage. According to the shape of a workpiece groove, the flux leakage controller coupled with the workpiece groove is made, the flux leakage controller is filled in the workpiece groove, and the problems of flux leakage and magnetic line effusion in the position of the workpiece groove are solved; and the induction heating efficiency is improved, and simultaneously the phenomena of distortion and hardening break are reduced.

The invention relates to a manufacture method for manufacturing a cantilever steel pipe with high strength and high toughness by using a hot-rolling coiled plate. The method comprises the following steps that: firstly, a hot-rolling coiled plate is rolled into an ERW welding pipe by using an ERW pipe welding machine set, the ERW welding pipe is heated by induction in induction heating equipment, the heating time is within 60-140s, the ERW welding pipe is heated to 910DEG C to 960DEG C, and austenitizing is carried out; then, the ERW welding pipe enters a water-cooling or steam-cooling quenching machine set to carry out quenching, the quenching and cooling speed of the ERW welding pipe is greater than or equal to 5DEG C / s, and a quenched martensite organization is obtained after quenching;tempering is carried out after quenching, induction heating is carried out by adopting the induction heating equipment in the tempering, the heating temperature of the quenched martensite organization is 220DEG C to 440DEG C, the tempering time is 80 to 180s, and a tempered martensite organization is obtained; and finally, straightening, flaw detection, surface inspection and sampling inspection are carried out to finally obtain the cantilever steel pipe with excellent performance, high strength and high toughness. The invention has the advantages that the invention adopts a heat treatment method of induction heating to cause the heated cantilever steel pipe to be evenly heated, decomposes the residual austenite when obtaining the tempered martensite after induction tempering and has low equipment investment, little maintenance cost of the equipment, small occupation area and small environmental pollution.

The invention discloses a light intermediate frequency heating power supply based on high-frequency rectification and inverter and a design method thereof. Through the high-frequency IGBT rectification and inverter circuit, and using soft switching technology, the three-phase power frequency AC voltage signal is converted into a high frequency of 20KHz. Square wave voltage output; on the output side of the IGBT rectifier inverter circuit, an external high-frequency step-up transformer is connected, in which the primary winding of the high-frequency step-up transformer is an inductive load, and a capacitor is connected in series to make the output circuit of the secondary winding of the transformer resonate at 20KHz; as a high-frequency AC The power supply, through a group of IGBT switch modules, realizes medium-frequency chopping of the input high-frequency high voltage. 1KHz series resonance occurs in the capacitor, at this time, the intermediate frequency sinusoidal AC current flows through the load to meet the demand of the load heating current. The invention not only greatly reduces manufacturing and application costs, but also uses simple modules and is easy to implement.

The invention relates to a contamination-free and high-efficient device for thinning titanium aluminum alloy, particularly to a device for thinning the titanium aluminum alloy. The invention aims to solve the problems that the conventional ultrasonic wave equipment cannot be used in the casting process of the titanium aluminum alloy, the reaction between the titanium aluminum melt and the molded case is serious when ultrasonic vibration is conducted, and the ultrasonography equipment cannot be used for treating the titanium aluminum alloy melt in the electromagnetic induction casting. The device comprises a tank body, a vacuum pump, an ultrasonic generator, ultrasonic wave oscillation equipment and titanium aluminum alloy melt smelting equipment, wherein the ultrasonic wave oscillation equipment comprises an upper feed transmission device, a connecting rod, an insulation washer, an energy converter, a fixing rack, an aluminum alloy amplitude transformer and a T8 steel tool head, and the titanium aluminum alloy melt smelting equipment comprises coils, an adamantine spar pipe, a mullite fibre layer, a molded case, a bar stock layer, a graphite felt and a lower fixing rod. The device can be used in the field of titanium aluminum alloy thinning with the characteristics of contamination-free and high-efficient.

The invention discloses an induction heating and microwave heating multifunctional hot milling construction method for asphalt pavement. It includes the following steps: judge the pavement material; determine the heating method; according to the size and position of the area to be milled, the mechanical arm controls the heating mechanism to move, arrange and combine, and correspond to the heating position; start the power supply, start heating, start the water pump, and adjust the heating device. To cool down, the heating car moves slowly at a certain speed; milling is carried out on the heated parts. The invention can solve the problems of poor milling effect caused by poor heating effect of different road surfaces and inapplicability of the traditional milling method of asphalt on the steel bridge deck.

The invention relates to a powder preparation method for an induction heating and radio frequency plasma combined atomizing powder system. The powder preparation method comprises the following steps that (1), raw materials are prepared and processed; (2), the system is pre-vacuumed and a protective atmosphere is established; (3), wire materials are straightened and conveyed; (4), high-frequency induction preheating is carried out; (5), radio frequency plasma melting is carried out; (6), powders are prepared by atomizing; (7), separation and dust removal are carried out; and (8), the powder size is graded. The powder preparation method for the induction heating and radiofrequency plasma combined atomizing powder system uses high purity metal wire material instead of the powders as the raw materials, so that the carrying of raw materials to adsorb gas and water is reduced; a technology of the high frequency induction heating combined with the radio frequency plasma smelting and gas atomization is adopted, during the whole process of heating, melting, and the gas atomization is free of pollution and impurities in the protective atmosphere, and the degree of superheat of liquid flow ordroplets is increased during the process of radio frequency plasma smelting; and high quality spherical powders can be obtained by adopting high pressure atomizing nozzles atomizing, and the yield ofmetal powders per unit time is increased.

The invention discloses an induction heating system which is provided with external combined induction heating coil phased arrays and used for an injection molding process and an application for the induction heating system, and belongs to the field of methods for manufacturing injection molding products. According to the technical scheme, a singlechip, a relay, inverters, coils and a keyboard are provided, wherein a program for controlling each heating mode states is pre-set in the singlechip; and switching among the heating mode states is realized by the keyboard; induction coils is powered on or powered off according to the preset program sequence or other ways, so that mutual influence of magnetic fields among the coils is eliminated, and the heating efficiency is improved; and meanwhile, the coils also can be separately or synchronously powered on or powered off according to the specific sequence, so that local temperature of a mould cavity can be controlled, and the heating flexibility is increased; and therefore, the system is particularly suitable for performing injection molding on parts which are made of thermoplastic or thermosetting composite materials or heating complicated mould cavities of injection moulds and locally heating the mould cavities of the injection moulds during compression molding production.