369 results about "Induction furnace" patented technology

According to the smelting method for refining the size of the inclusions of the invar alloy and the invar alloy, a large-size invar alloy steel ingot is prepared through the processes of induction furnace smelting, AOD furnace refining, LF furnace refining, VD furnace refining and die casting, in the AOD furnace refining process, an Al-Si-Mn composite deoxidizing agent is adopted for deoxidizing, in the LF furnace refining process, Ni-Mg alloy is added, and in the VD furnace refining process, the Al-Si-Mn composite deoxidizing agent is adopted for deoxidizing; the impurities are decomposed and refined, the impurities are controlled to be Al2O3-MgO-SiO2 series impurities, the grade of the A type impurities, the grade of the B type impurities, the grade of the C type impurities and the grade of the D type impurities are smaller than or equal to 0.5 grade, and the grade of the Ds type impurities is 0 grade. The method can effectively refine the size of the inclusions in the invar alloy molten steel, reduce the occurrence rate of local peeling defects on the surface of the cold-rolled strip caused by large-size deoxidized products, and improve the product quality and the yield of the invar alloy strip.

The invention belongs to the field of metal materials, and provides a hard alloy wear-resistant steel ball suitable for mine ore grinding and a preparation method thereof.The hard alloy wear-resistant steel ball is prepared from waste steel pig iron as a basic raw material and chemical components including 2.1%-2.2% of C, 9.8%-10.0% of Cr, 0.10%-0.20% of V and 0.03%-0.06% of Ti; a core-shell precipitated phase microstructure design with MN / MCN as a hard core and chromium carbonitride as a gradient self-passivation shell layer is formed through medium-frequency induction furnace smelting, controlled nitrogen introduction establishment of a V-Ti-C-N microalloy system, bottom pouring solidification and austenitizing quenching and tempering heat treatment processes, and the performance indexes that the surface hardness is HRC60-63 and the core hardness is HRC54-58 are achieved; the average particle size of a core-shell precipitated phase is in dispersed distribution of 20-200nm, the shell thickness is 5-50nm, and the alloy steel ball has excellent wear resistance and corrosion resistance under the high-impact and high-wear working conditions of wet ore grinding, solves the problem of insufficient wear resistance and corrosion resistance of a traditional alloy steel ball, and has wide mine ore grinding application value.

The invention relates to the technical field of image data processing, in particular to an induction furnace coil temperature field visual monitoring method based on thermal imaging, and the method comprises the steps: obtaining the three-dimensional temperature field data of an induction furnace coil, and extracting high-temperature voxels; an adaptive weight is constructed for each high-temperature voxel, and the weight is composed of two parts: 1, the local linearity of the voxel is determined by calculating the projection density of the voxel in multiple directions; secondly, obtaining a colinearity score by calculating the consistency of the candidate voxel and other candidate voxels in the neighborhood of the candidate voxel in the local main direction; and performing weighted Hough transform on the candidate voxels to vote by taking the product of the two as an adaptive weight. Through the intelligent weighting mechanism, real linear fault signals can be effectively amplified, noise interference is suppressed, and the detection accuracy and robustness of early discontinuous linear high-temperature faults are improved.

The invention discloses a medium-frequency induction furnace molten metal leakage automatic cut-off system based on temperature monitoring, and relates to the technical field of industrial molten metal monitoring, and the system comprises a data acquisition module which is used for obtaining historical temperature data under different working conditions in a high-temperature and high-pressure environment by constructing a molten metal temperature feature library, and sending the historical temperature data to a data processing module; the data classification module is used for classifying and marking various flow scenes to form an initial data set containing a temperature distribution rule in a normal flow state and obtain reference data for subsequent mode definition, and the risk assessment module is used for generating a risk level according to the initial data set and determining the risk degree of a current flow state; according to the medium-frequency induction furnace molten metal leakage automatic cut-off system based on temperature monitoring, molten metal flowing abnormity is found in time, the risk degree is accurately evaluated, monitoring parameters are automatically adjusted to deal with the high-risk state, and the safety and controllability of the molten metal production process are effectively improved.

The invention discloses an efficient refining method for red impure copper. The efficient refining method comprises the following steps: (1) preparing calcium-cerium composite oxide powder; (2) preparing boron-phosphorus doped powder; (3) preparing a refining auxiliary agent; (4) red impure copper is put into a crucible, a medium-frequency induction furnace is adopted for heating and melting the red impure copper into a melt, the melt is covered with charcoal after being completely melted, the temperature of the melt is kept at 1110-1120 DEG C, then the refining auxiliary is added, and the mass ratio of the refining auxiliary to the melt is (3-4) kg: 1 t; and after charging, stirring the melt at a constant temperature of 1110-1120 DEG C for 10 minutes, then standing for 15 minutes, deslagging, casting and molding to obtain the refined impure red copper. After refining through the method, the tensile strength and the electric conductivity of the impure red copper can be remarkably improved, and the use performance of the impure red copper is improved.

The invention provides a method for preparing a copper ingot through waste copper refining, and belongs to the field of waste copper refining. The method comprises the following steps: sorting, crushing and drying a waste copper raw material to obtain a pretreated copper material; feeding the pretreated copper material into a cored power frequency induction furnace for melting; after the pretreated copper material is completely molten, adding a slag removing agent into the melt, then lowering the voltage, and salvaging slag after heat preservation; a magnetic refining agent is added into the melt obtained after slag fishing, stirring is carried out to adsorb impurity elements in the melt, then heat preservation and standing are carried out, and the magnetic refining agent is recycled; the refined melt is subjected to electromagnetic stirring and ultrasonic wave cooperative treatment, so that hydrogen and oxygen gas is deeply removed, and components are homogenized; and a slag conglomeration agent is added into the purified melt, stirring is conducted, slag is fished out after heat preservation, and casting is conducted to form an ingot. Therefore, deep and efficient removal of various types and trace harmful impurities (especially As, Pb, Sb and the like) in the waste copper is synergistically realized, and the metallurgical quality of final copper ingots is synchronously improved.

The invention provides a high-strength niobium alloy processing method, which relates to the technical field of alloy processing, and comprises the following steps: step 1, ingot casting preparation: niobium, tungsten, tantalum, molybdenum, zirconium and carbon are subjected to powder mixing and ingot casting to obtain a first alloy product; step 2, extrusion processing: heating the first alloy product by adopting a medium-frequency induction furnace, and carrying out extrusion treatment by adopting an extrusion ingot supply device to obtain a second alloy product; step 3, forging: performing intermediate annealing treatment on the extruded second alloy product twice by adopting a first annealing process in the forging process to obtain a third alloy product; wherein free forging treatment is carried out on the alloy product between the two times of intermediate annealing treatment; and (4) finished product processing: carrying out finished product annealing treatment on the third alloy product by adopting a second annealing process to obtain the final high-strength niobium alloy. Wherein in the second annealing process, the temperature is increased to 1200-1450 DEG C at the speed of 18-20 DEG C / min, and heat preservation is conducted for 60-120 min. According to the scheme, the strength of the niobium alloy can be improved.

The invention discloses a high-thermal-conductivity Mg-Zn magnesium alloy suitable for rheoforming and a preparation and processing method of the high-thermal-conductivity Mg-Zn magnesium alloy. The alloy comprises the following components in percentage by weight: 1-8% of Zn, 0.5-5% of Cu, 0.2-2% of Sn, 0.2-1% of Sc and the balance of Mg and inevitable impurities. The preparation and processing method comprises the following steps: (1) preparing raw materials according to the composition of the alloy components, and smelting by adopting a medium-frequency induction furnace and taking mixed gas of tetrafluoroethane and argon as a protective atmosphere; (2) mechanical stirring and ultrasonic synergistic stirring are combined to form a uniform melt; (3) preparing semi-solid slurry with a solid phase ratio of 35-50%; (4) forming; (5) cooling and opening the mold; (6) the obtained rheoforming blank is heated to 340-430 DEG C, heat preservation is conducted for 2-12 h, and after heat preservation is finished, quenching is conducted immediately, and cooling is conducted to the room temperature; (7) pre-aging; and (8) aging. By reasonably designing alloy components and optimizing rheoforming parameters, the defects of shrinkage, hot cracking and segregation of a conventional cast Mg-Zn alloy are overcome, and meanwhile, high heat conductivity and mechanical properties are guaranteed.

A preparation method for high-nitrogen austenitic stainless steel. The high-nitrogen austenitic stainless steel comprises the following chemical components in percentages by weight: carbon: ≤0.02%; silicon: 0.4-0.8%; manganese: 10.2-12.5%; chromium: 24.5-26.5%; nickel: 13.5-16.5%; molybdenum: 3.2-4.8%; nitrogen: 0.75-0.95%; phosphorus: ≤0.03%; sulfur: ≤0.0025%; vanadium: 0.016-0.022%; niobium: 0.026-0.034%; copper: 0.2-0.35%; aluminum: 0.01-0.02%; cerium: 0.015-0.025%; and the balance of iron and inevitable impurities. The preparation method comprises the steps of raw material charging, vacuum melting, refining, nitrogen-added alloying, deoxidation and desulfurization, casting, electroslag remelting, and secondary casting. The preparation is implemented by using the processes of smelting in a pressurized induction furnace and electroslag remelting under a protective atmosphere; and nitrogen is added by using a method in which a nitrogen alloy and pressurized nitrogen permeation are combined.

The invention belongs to the technical field of induction furnace intelligent control, and discloses a non-vacuum induction furnace power supply system optimization method based on an improved PSO algorithm. The method comprises the following steps: establishing a basic principle and a heat transfer theory of non-vacuum induction furnace smelting, and according to an energy conservation principle, taking power supply parameters of each stage of an induction furnace as decision variables, on the premise of ensuring that molten steel with qualified temperature is obtained, taking electric energy minimization as an optimization target, and increasing necessary constraints in an actual production process; establishing a mechanism-based non-vacuum induction furnace power supply system optimization model, and calculating power supply parameters by adopting an improved PSO (Particle Swarm Optimization) algorithm; the power supply parameters comprise power, duration and power change rate. According to the method, power supply parameter optimization is more accurate, inertia weights can be dynamically adjusted along with the smelting energy balance state corresponding to the power supply parameters (weight attenuation is slow when errors are large, and weight attenuation is fast when errors are small), and the situation that traditional PSO weights are fixed or only attenuated linearly is avoided.

The application provides a structure Cu-containing Mo-V micro-alloy cast steel and a preparation method thereof. The cast steel material is composed of the following components in percentage of mass fraction: C: 0.06-0.13%, Mn: 1.3-1.9%, Si: 0.2-0.4%, Ni: 0.5-1%, Mo: 0.18-0.42%, V: 0.05-0.09%, and Cu: 0.25-0.65%. The method comprises the following steps: step one, adding a blank into an electric arc furnace or an induction furnace; step two, performing conventional smelting on the blank to obtain a molten steel with a required mass target component; step three, adjusting the temperature of a semi-finished cast steel and tapping the molten steel to obtain the cast steel; step four, performing heat treatment on the cast steel; and step five, judging the qualification of the cast steel to obtain a high-quality finished cast steel. Through the structure Cu-containing Mo-V micro-alloy cast steel and the preparation method thereof, the yield strength grade of the non-quenching + tempering type micro-alloyed precipitation strengthening type cast steel can be further improved, the low-temperature toughness of a large-size structure cast piece under a conventional process can be improved, and the cost consumption of the large-size structure cast piece under the conventional process can be reduced.

The invention relates to a thick and large-section nodular cast iron inoculation method based on a laminated slow-release inoculation block. The method comprises the following treatment steps that S1, raw materials are prepared; s2, the high-purity pig iron, the waste steel and the nodular cast iron foundry returns in the step S1 are put into an electric induction furnace to be smelted; s3, performing carbon and silicon testing on the molten iron subjected to slag removal in the step S2 by using a carbon and silicon analyzer, and adjusting components; s4, carrying out primary spheroidizing inoculation by adopting a pouring method; and S5, after spheroidizing inoculation is completed, molten iron is poured into a sand mold, a laminated slow-release inoculation block is placed in the sand mold for slow-release inoculation, and a thick and large-section spheroidal graphite cast iron casting is formed. The method has the advantages that slow-release inoculation is implemented in the cross gate, and molten iron continuously and slowly releases an inoculant in the pouring process through the laminated slow-release inoculation blocks. By means of the method, inoculation recession can be effectively inhibited, the graphite form is improved, and finally the density and the spheroidization rate of graphite nodules in the center of the thick and large-section nodular iron casting are increased.

The invention relates to the technical field of wear-resistant steel ball casting, and discloses a process for producing as-cast wear-resistant steel balls by using a multi-element modified alloy, which comprises the following steps of: smelting molten steel, namely putting raw materials into an electric arc furnace or an induction furnace, heating to 1550-1650 DEG C, and smelting to obtain basic molten steel; multi-element modified alloy is added, specifically, the multi-element modified alloy is added into the smelted molten steel, the adding amount of the multi-element modified alloy accounts for 0.5%-2.0% of the total weight of the molten steel, stirring is conducted for 10-30 minutes at the temperature of 1500-1600 DEG C, and the alloy is made to be evenly dispersed; performing modification treatment; according to the multi-element modified alloy, through the synergistic effect of the rare earth element RE and the alkaline metal components Ba and Ca, deep deoxidation and impurity purification are achieved in the molten steel smelting stage, the oxygen activity is reduced, non-metallic inclusion residues are reduced, meanwhile, the grain structure is refined through a solid solution strengthening mechanism of MnN and CrN, a uniform and compact matrix structure is formed, and therefore the corrosion resistance of the alloy is improved. And the overall compactness and impact toughness of the wear-resistant steel ball are improved.

The invention relates to the technical field of metal matrix composite material preparation, and discloses a TiB2 and ultrahigh strength and toughness steel composite material casting infiltration preparation method which comprises the following steps: S1, TiB2 metal ceramic particles are pretreated, then TiB2 powder and a pore forming agent are mixed according to the volume ratio of 6.5: 3.5-7.5: 2.5, and sintering is performed after cold press molding to obtain a preform with the porosity of 42-48%; s2, the TiB2 metal ceramic particles are subjected to surface sensitization and activation, and then Cr / Mo gradient layers are deposited on the surfaces of the TiB2 metal ceramic particles through a chemical plating method; s3, the ultrahigh strength and toughness steel is put into a medium-frequency induction furnace to be smelted, and after smelting, Ce (0.3 wt%-0.8 wt%) and B (0.1 wt%-0.3 wt%) are added; and after the temperature of the solution is increased to 1500-1700 DEG C, degassing is carried out by rotatably blowing argon to control the oxygen potential content. According to the casting-infiltration preparation method of the TiB2 and ultrahigh strength and toughness steel composite material, a three-dimensional porous structure with macroscopic pores and microcosmic pores is constructed, the casting-infiltration resistance of molten steel is remarkably reduced, meanwhile, the interface wettability is optimized through a Cr / Mo gradient coating, the Fe-B diffusion reaction is inhibited, and uniform fusion of a TiB2 reinforced phase and a steel matrix is achieved.

A high pressure cartridge case is fabricated by: providing a wire or rod; cold forming a cartridge case into a drawn blank or a tubular component from sheared lengths of the wire or rod; annealing the cartridge case using a belt furnace, flame furnace, induction furnace, or a batch furnace; performing a machine ejector slot and trim on the cartridge case; forming the shoulder and neck of the cartridge case; performing a heat treatment of the cartridge case; and tempering the cartridge case.

A method is provided for life cycle wear monitoring of a consumable refractory in an electric induction furnace used for heating and melting materials by accumulating laser imaging data of the refractory's inner surface periodically over the refractory's life cycle while the furnace is utilized in a foundry environment and processing the accumulated imaging data for comparative analysis with previous laser imaging data of the refractory's inner surface.

The invention discloses an electromagnetic induction device for continuously synthesizing a metal catalytic material. The electromagnetic induction device comprises an induction furnace cavity fixedly connected with an induction furnace cover, a temperature sensor and a track suite are fixedly connected to the lower heat preservation die holder, and a lower magnetic core fixing seat is fixedly connected to the lower part of the lower heat preservation die holder; an upper magnetic core fixing seat is fixedly connected to the upper heat preservation die holder, and an upper magnetic core and a lower magnetic core which are inserted into the two ends of the induction coil are correspondingly and fixedly connected to the upper magnetic core fixing seat and the lower magnetic core fixing seat; the induction coil is formed by coiling a hollow induction tube; a stepping motor is fixedly arranged in the cavity of the induction furnace and is fixedly connected with a material tray; a control system and a heat dissipation circulator are arranged outside the induction furnace cavity, the induction coil is connected with a hot water inlet and a cold water outlet of the heat dissipation circulator, and the cold water inlet and the hot water outlet of the heat dissipation circulator are externally connected with a water tank; the induction coil, the temperature sensor and the stepping motor are connected with a control system, and the control system is connected with a mains supply and a PC. The problems of oxidation and heat dissipation of the induction coil are solved, and different materials can be efficiently, stably and continuously heated.

The medium-frequency induction furnace comprises an induction furnace body, a protective cover is connected to the surface of the induction furnace body in a sleeved mode, a first sliding groove is formed in the top of the protective cover, an external threaded rod is welded to the top of the induction furnace body and located in the first sliding groove, and an internal threaded ring is connected to the surface of the external threaded rod in a sleeved mode. The bottom of the internal thread ring is attached to the top of the protective cover. According to the medium-frequency induction furnace, the surface of the induction furnace body is sleeved with the protective cover, the first sliding groove is formed in the top of the protective cover, meanwhile, the outer threaded rod is welded to the top of the induction furnace body, and the outer threaded rod is located in the first sliding groove till the bottom of the inner threaded ring is attached to the top of the protective cover, so that the protective cover can be fixed; and at the moment, the protective cover can provide a protective effect for the circuit of the medium-frequency induction furnace, so that the circuit is not contacted, and the protective property is stronger during use.

The invention belongs to the field of automation control, and particularly relates to an automatic slag raking method and system for an induction furnace and a computer storage medium. The automatic slag raking method comprises the following steps: controlling a robotic arm to carry an image acquisition device to a detection point and obtain a fused image at an induction furnace mouth, wherein the fused image is obtained through image registration and fusion based on visible light and a thermal image; according to the fused image, identifying and segmenting a furnace mouth frame, a slag liquid mask area and a slag mask area based on a semantic segmentation model; if the slag liquid mask area is recognized, the average height of the liquid level and the average thickness of the slag are calculated based on the position coordinates of the furnace mouth frame in the image, the obtained first average depth of field corresponding to the slag liquid mask area and the obtained second average depth of field corresponding to the slag mask area; if the calculated average height of the liquid level is within a preset range and the average thickness of the slag is greater than a preset thickness threshold value, calculating a first furnace feeding height and a first initial material raking height according to the average height of the liquid level and the average thickness of the slag;

This utility model relates to the field of metal material processing and treatment, and discloses a dual-purpose induction furnace for iron softening and zinc diffusion treatment, comprising: a furnace body; a top cover for sealing the furnace body, with a sealing rod fixedly connected to the bottom of the top cover; a bottom plate for the furnace body, with a base at the bottom of the bottom plate, a water outlet groove penetrating the bottom plate at the outermost side of the bottom plate, an annular sealing ring and a cover plate at the top of the water outlet groove, the sealing ring being located at the top of the cover plate, and an elastic element fixedly connected to the bottom of the cover plate; when the top cover is closed, the sealing rod contacts the sealing ring; an annular extrusion groove is formed at the bottom opening of the water outlet groove on the base, with a sealing ring fixedly connected to the top of the extrusion groove. In this utility model, the sealing ring and cover plate at the top of the water outlet groove and the sealing ring at the bottom of the water outlet groove simultaneously seal the water outlet groove, creating a sealing effect on both the upper and lower sides of the water outlet groove, improving the sealing performance of the furnace body and avoiding problems caused by poor sealing of the discharge port.

The utility model discloses a feeding device of a medium-frequency induction furnace, and relates to the technical field of medium-frequency induction furnaces. The electric induction furnace comprises a workbench, the top of the workbench is fixedly provided with an electric induction furnace body, one side of the workbench is fixedly connected with two vertical plates which are symmetrically distributed, a feeding cylinder is arranged between the two vertical plates, and guide assemblies are arranged between the feeding cylinder and the vertical plates. Sliding rails are fixedly connected to the top end of the workbench and located on the two sides of the electric induction furnace body. During feeding, a connecting rod moves upwards along with upward movement of a sliding block, meanwhile, the connecting rod, a guide rod and a second guide groove are driven to move synchronously, a second roller is driven through the second guide groove, meanwhile, a sliding plate and a protective cover are driven to move symmetrically towards the sides close to each other along the top of a sliding rail, the protective cover is closed, accurate discharging is facilitated, and meanwhile the working efficiency is improved. Molten metal is prevented from being splashed to the outer side of the device, and the personal safety of operators is further guaranteed.

This product is a cylindrical sleeve for use in an induction furnace. By providing concave and convex portions along the entire circumference of the outer surface in the longitudinal direction, when powder or granular material is filled between the inner periphery of the induction furnace and the outer periphery of this product, voids are formed at the bottom of the concave portions, and any gaseous components leaking from this product can be discharged through the voids.

The invention provides a vacuum induction furnace for metal smelting, which is applied to the technical field of vacuum induction furnaces, and is characterized in that the vacuum induction furnace comprises a rack and a shell fixed on the rack, the shell is internally provided with a smelting cavity and a forming cavity, and the smelting cavity and the forming cavity are both connected with a vacuum pump; an induction furnace body is rotationally arranged in the smelting cavity; a casting mold is arranged in the forming cavity, and a lifting mechanism for driving the casting mold to move between the smelting cavity and the forming cavity when the smelting cavity and the forming cavity are both in a vacuum state is arranged in the shell; the forming cavity is connected with a sealing door capable of being opened and closed; a sealing mechanism for keeping the smelting cavity in a vacuum state all the time is arranged between the smelting cavity and the forming cavity; the shell is further provided with a feeding mechanism for feeding materials when the smelting cavity is in a vacuum state. The continuous casting device has the technical effects that continuous operation of smelting, casting, cooling and material taking is realized, and the production efficiency is remarkably improved.

The invention relates to the technical field of casting equipment, and particularly discloses a camshaft casting continuous production device and method.The device comprises an electric induction furnace and a slag salvaging mechanism, and the electric induction furnace comprises a furnace body and a support arranged on the furnace body and close to a furnace opening; the slag salvaging mechanism comprises an outer sleeve rotationally connected with the support, a spiral conveyor coaxially arranged in the outer sleeve, and at least one intermittent slag collecting assembly, wherein one end of the outer sleeve extends into the furnace body from the furnace opening. A slag inlet and a slag outlet are formed in the outer sleeve in the axial direction at intervals, the intermittent slag collecting assembly is constructed to continuously collect dross in molten iron in the furnace body and extrude the dross into the outer sleeve from the slag inlet, and the spiral material conveying machine is constructed to continuously convey the dross from the slag inlet to the slag outlet and discharge the dross, so that the time difference between manual slag salvaging and connection of previous and later procedures is effectively solved; the continuity of casting production is guaranteed, and the production efficiency is improved to adapt to the large-scale production requirement; and meanwhile, the consistency of the deslagging degree is ensured through automatic deslagging operation, and the stability of the quality of the camshaft blank is improved.

The invention discloses an energy-saving smelting process for secondary aluminum production. The energy-saving smelting process comprises the following steps: pretreating raw materials; a medium-frequency induction furnace is used as a main smelting furnace; carrying out gradient heating smelting; and the low-consumption refining process comprises the steps that at the temperature of 660-670 DEG C, a composite refining agent is adopted, mechanical vibration is applied for refining and heat preservation casting, a three-stage waste heat utilization system of tail gas waste heat drying, combustion-supporting air preheating and ingot casting waste heat recycling is constructed, and the tail gas waste heat utilization rate is increased to 60% or above; the intermediate frequency furnace double-layer heat preservation design is matched with a closed-loop cooling system, the heat loss is reduced by 40%, the oxidation burning loss of molten aluminum is reduced through a gradient temperature rising strategy, energy is saved by 25%-30% compared with a traditional technology, the production cost is reduced by 15%-20%, raw material pretreatment is conducted through crushing, magnetic separation and classified batching, impurities are controlled from the source, and a composite refining agent is matched with mechanical vibration and vacuum degassing to cooperate, so that the production efficiency is improved. And the non-metal impurity removal rate is increased, the cast ingot purity is improved, the mechanical property is stable, and the high-end secondary aluminum application requirement is met.

This invention discloses a neutral refractory material for medium-frequency induction furnace linings. The raw materials include: 78-83 parts by weight of quartz sand, 5-7 parts by weight of fire clay, 5-7 parts by weight of fluorite, 0.8-1.2 parts by weight of alumina, 1.2-1.8 parts by weight of silicon carbide, and 0.3-0.7 parts by weight of calcium oxide. The preparation method is also disclosed. The method of this invention is simple, with the main components being quartz sand, fire clay, and fluorite, with quartz sand comprising the largest proportion. In addition, some additives such as alumina, silicon carbide, and calcium oxide are added to improve the refractory properties and chemical reactivity of the furnace charge. This results in a material with certain slag resistance and a good service life, exhibiting good overall performance and suitable for melting various metals. The furnace lining mixture is non-toxic, harmless, environmentally friendly, and pollution-free.

The invention relates to the technical field of metal product preparation, and discloses a manufacturing process of a high-strength wear-resistant alloy cast iron pan, which comprises the following steps: respectively carrying out magnetic separation impurity removal on a basic raw material and titanium powder, then carrying out vacuum roasting, cooling and discharging to respectively obtain pre-treated pig iron, pre-treated carbon steel and pre-treated titanium powder; preheating an induction furnace, adding the pretreated pig iron, and raising the furnace temperature until the pretreated pig iron is completely molten; then adding the pretreated carbon steel and the reinforced alloy, starting electromagnetic stirring, then adding the pretreated titanium powder, and continuously stirring after adding to obtain a melt; a composite inoculant is added into the melt and stirred, then molten iron is poured into a heat preservation launder for pouring, demolding is conducted after heat preservation, and a pot blank is obtained; the pot bottom and the pot body of the pot blank are subjected to partitioned cooling, then overall cooling and vibration aging treatment are conducted, and then natural cooling is conducted to the room temperature; and after the cooled pan blank is ground and polished, the pan blank is coated with a composite ceramic coating, and the high-strength wear-resistant alloy cast iron pan is obtained.

The invention relates to a high-temperature alloy with good high-temperature durability and a preparation method of the high-temperature alloy, and belongs to the technical field of aluminum-containing heat-resistant alloy materials. The high-temperature alloy material with good high-temperature durability is composed of the following elements in percentage by weight: 0.3%-0.6% of C, 0.5%-2.5% of Mn, less than or equal to 0.02% of P, less than or equal to 0.01% of S, 20%-30% of Cr, 1.0%-5.0% of Fe, 0.5%-3.0% of Al, 2.0%-8.0% of W, 0.01%-1.5% of Mo, 0.1%-1.0% of Co and the balance of Fe. 0.1% to 2.0% of Nb; the alloy comprises the following components in percentage by weight: 0.01%-0.15% of Zr, 0.01%-0.15% of Ti, 0.005%-0.5% of RE and the balance of Ni and inevitable impurities. The high-temperature alloy material with the good high-temperature durability is smelted in air through a medium-frequency induction furnace, is formed through centrifugal casting, and is compact in structure and excellent in high-temperature durability. The microstructure of the high-temperature alloy material with the good high-temperature durability is composed of austenite and carbide.

The application discloses a method for homogenizing a chemical synthetic multi-component alloy, and the method comprises the following steps: dissolving ammonium molybdate and ammonium tungstate in deionized water to obtain a mixed solution of ammonium molybdate and ammonium tungstate; dissolving polyethyleneimine in deionized water to obtain a polyethyleneimine solution; adding the polyethyleneimine solution into the mixed solution of ammonium molybdate and ammonium tungstate to uniformly disperse the precipitate; completely evaporating the solvent by using a rotary evaporation method to obtain a powder; performing secondary reduction on the powder to obtain a reduced powder; sintering the reduced powder in a graphite mold; heating the sintered product to 1500-1600 DEG C by using a medium-frequency induction furnace, extruding the sintered product on a horizontal extruder, naturally cooling the sintered product, and then annealing the sintered product at 1300-1400 DEG C. Compared with solid-state mixing, the method can save a mechanical alloying process and reduce sintering forming power in solidification forming; compared with liquid-phase mixing, the method can improve the uniformity of element mixing; compared with gas-phase mixing, the method can improve material utilization, reduce preparation cost and homogenization difficulty, and has no environmental pollution.

The invention discloses a high-toughness wear-resistant steel ball and a preparation process thereof, and belongs to the technical field of metal wear-resistant materials. A medium-frequency induction furnace is used for smelting molten steel, firstly, waste steel, ferroniobium, a carburant and carbon ferrochrome are mixed, heated and melted in the electric furnace, ferrosilicon, ferromanganese and nitrided ferrochrome are sequentially added after the molten steel is melted down, and the chemical composition and mass fraction of the molten steel in the furnace are controlled to be 0.73%-0.86% of C, 1.08%-1.27% of Si, 2.25%-2.38% of Cr, 0.04%-0.07% of Nb, 0.03%-0.05% of N and 1.17%-1.30% of Mn, 1t; 0.045% P, lt; 0.040% of S, and the balance Fe and inevitable impurities. The molten steel is continuously cast into square billets, the square billets are rolled into round steel on a rolling mill, finally, the round steel is machined into steel balls through a rolling or forging method, and the steel balls are subjected to step quenching of water quenching, air cooling and fog cooling to obtain high hardness, excellent wear resistance and good obdurability.