25 results about "Melting rate" patented technology

The present application relates to the technical field of metallurgical equipment operation control, and particularly relates to a rough copper sluice heat preservation and operation control method based on bonding-melting balance, comprising the following steps: establishing a bonding strength-melting rate-temperature-preservation parameter correlation model, and determining a critical temperature interval when bonding and melting are balanced; according to the balance model and real-time production data, the temperature of the inner wall of the sluice is monitored in real time through a temperature sensor, when the temperature is lower than the critical temperature interval, the electric heat tracing device is started to supplement heat, when the temperature is higher than the critical temperature interval, the opening degree of the heat preservation cover plate is adjusted; before the rough copper is discharged, the heat preservation system is started in advance, and the sluice is preheated to the lower limit of the critical temperature interval; during the discharge process, the rough copper flow rate is controlled; after the discharge is completed, the heat preservation system is kept running. Through the whole-process management and control of preheating, operation process regulation and control and subsequent heat preservation, the dynamic balance of bonding and melting of the rough copper on the inner wall of the sluice is realized.

This invention relates to the field of alloy forming technology, specifically to a method for preparing Ti-Al medium-entropy alloys based on selective laser melting. The method includes preparing raw material rods, gas atomization powder preparation, 3D modeling, preheating and forming the matrix, powder spreading and leveling, 3D printing pretreatment, pre-powder spreading, and laser printing. This method features high melting rate and high solidification rate, forming unique microstructures such as ultrafine grain structure, metastable phases, and supersaturated solid solutions. By combining alloy composition design, gas atomization powder preparation, and selective laser melting, the resulting parts possess excellent comprehensive mechanical properties and can be used to prepare complex structural parts. Furthermore, it features a short preparation cycle, high material utilization, and rapid forming.

This application relates to a method for preparing high-purity iron, comprising the following steps: forming an electrode rod from pure iron raw material; subjecting the electrode rod to vacuum arc melting; the vacuum arc melting includes an arc initiation stage, a melting stage, and a feeding stage; the melting current in the arc initiation stage is 1.5 kA~3.0 kA, and the arc stabilization current is 4 A~10 A; the melting current in the melting stage is 2.5 kA~3.5 kA, the melting rate is 2.5 cm / min~5.5 cm / min, and the arc stabilization current is 8 A~20 A; the melting current in the feeding stage is 1.2 kA~3.3 kA, the melting rate is 1 cm / min~4.5 cm / min, and the arc stabilization current is 4 A~11 A. This method can effectively reduce the density and refine the size of inclusions in pure iron, while also making the inclusions dispersed in the material. The high-purity iron prepared by this method has a significantly reduced inclusion density, small inclusion size, and is in a dispersed state, which meets the manufacturing requirements of iron-based supports.

This invention provides a method for producing a metal mask for OLED pixel deposition, relating to the technical field of metal masks. The method includes the following steps: processing raw materials using a VIM+PESR+VAR triple smelting process; VIM process: melting vacuum degree < 5 Pa, melting temperature between 1480℃ and 1520℃, refining temperature between 1530℃ and 1570℃, and refining time set between 28 and 32 minutes; PESR process: using an inert protective atmosphere, a fill ratio set between 0.5 and 0.8, a current set between 9kA and 14.5kA, and a voltage set between 55V and 60V; VAR process: melting vacuum degree < 0.5 Pa, fill ratio set between 0.6 and 0.9, and melting rate < 5 kg / min. This method achieves the technical effect of reducing the probability of pinholes appearing on the metal mask.

The invention discloses a titanium alloy coarse particle powder recovery EIGA atomization method, and aims at solving the technical problems that an existing titanium alloy coarse particle powder recovery process is complex, melt pollution is likely to be caused, the fine powder conversion rate is low, and industrial batch production cannot be achieved. According to the method, the titanium alloy coarse powder with the particle size larger than 53 microns, which is a byproduct produced by gas atomization powder preparation, is used as a raw material, the steps of raw material pretreatment, closed type controllable powder feeding, sectional type induction smelting, controllable flow guiding and atomization, spheroidizing solidification and graded collection are sequentially conducted, the powder feeding rate and the melting rate are dynamically matched in real time, the yttrium oxide sleeve sectional induction heating process is combined, and the titanium alloy powder with the particle size larger than 53 microns is obtained. The coarse powder is directly converted into high-added-value titanium alloy fine powder; according to the method, the technological process is short, 24-hour continuous industrial production can be achieved, the oxygen content of the prepared regenerated powder is smaller than or equal to 800 ppm, the total yield of the high-added-value powder is larger than or equal to 65%, and the performance of the powder completely meets the high-end powder use requirements of additive manufacturing and metal injection molding.

The utility model belongs to the technical field of injection molding machines, and relates to a desktop type pure electric servo horizontal injection molding machine which comprises a desktop type pure electric servo horizontal injection molding machine main body, and a blanking pipeline is arranged on one side of the top of the desktop type pure electric servo horizontal injection molding machine main body; and one end of the discharging pipeline is connected with a discharging hopper, inclined supporting plates are fixedly connected to the two sides of the discharging hopper, and the other ends of the inclined supporting plates are fixedly connected to one side of the top of the desktop type pure electric servo horizontal injection molding machine body. Through the arrangement of the screening assembly, the situation that injection molding raw materials are caked and different in size can be reduced, and therefore the situation that due to the fact that the raw materials are caked or different in size, the melting rates of the raw materials are prone to being different, semi-molten cores and agglomerated holes appear in a melt is prevented; further, crazing, flow marks, shrinkage cavities and other defects are generated on the surface of an injection-molded product.

The application relates to the technical field of alloy materials, in particular to a high-thermal-conductivity copper-zirconium alloy and a preparation method thereof, which comprises the following steps: raw material pretreatment, segmented vacuum melting, gradient solidification forming and gradient aging modification; the third-stage cooling end temperature of the gradient solidification forming is consistent with the first-stage temperature rising starting temperature of the gradient aging modification, and the holding time of the gradient solidification forming and the holding time of the gradient aging modification are matched in a ratio of 1:0.05-0.08; in the technical scheme, the raw material pretreatment link serves as the basis of the preparation process, the raw materials such as electrolytic copper and zirconium blocks are processed to a specific size range, and the consistency of the melting rate of the raw materials in the melting process is ensured; the combination mode of vacuum drying, nitrogen blowing and closed transfer removes the water and impurities adsorbed on the surface of the raw materials from the source, simultaneously avoids oxidation caused by air contact in the transfer process, and provides raw material purity guarantee for the uniformity of the subsequent alloy components.

The invention relates to the technical field of ferrous metallurgy, in particular to a control method for reducing impurities on the surface of a medium-thickness plate, which comprises the following steps: firstly, when a tundish is pulled before butt joint, casting powder is melted well and thoroughly, the surface of a crystallizer is covered with a thin layer of liquid slag before running, and a special slag salvaging tool is configured to salvage redundant slag in the crystallizer; the temperature of molten steel in a furnace before butt joint is increased by 5 DEG C so as to reduce caking and cold steel formed on the surface of a blank shell, butt joint casting furnace casting slag is achieved, the content of CaO in the casting powder is increased, the melting point, the melting speed and the viscosity of the casting powder are increased, the melting speed of the casting powder is controlled, the consumption of the casting powder and the thickness of a glass slag layer are reduced, and full-process protective casting is adopted in the final casting process. According to the method disclosed by the invention, by optimizing the field operation of the butt joint process, increasing the viscosity of the casting powder and the surface tension between liquid steel interfaces, adding a protective casting device and the like, the occurrence rate of inclusion on the surface of the medium-thickness steel plate is effectively reduced through the synergistic effect of all the steps.

The invention relates to the technical field of industrial furnace melting process monitoring and control, in particular to a method, a device and equipment for calculating the melting process of batch in a glass furnace. The method comprises the following steps: S1, acquiring image data of a melting area through an endoscope arranged at the front end of a kiln, and acquiring temperature and infrared emissivity information of corresponding pixel points; s2, processing the image data based on the temperature and infrared emissivity information, and distinguishing a batch area and a melt area to obtain a mask image of the batch area; s3, according to the mask image, calculating the proportion value of the pixel area of the batch area to the total pixel area of the melting area, and taking the proportion value as the overall melting rate; s4, comparing the proportion value with a preset ideal melting rate and an allowable deviation range to obtain a melting state judgment result; and S5, generating a working condition adjustment suggestion or a control instruction according to the melting state judgment result. According to the invention, quantitative evaluation and working condition adjustment of the glass kiln batch melting process are realized.

This invention discloses an intelligent control system for electrode melting rate based on start-stop control, belonging to the field of electrode melting rate control technology. First, based on quality constraint analysis, this invention obtains candidate melting rate ranges for the electrode. Then, based on environmental constraints, it filters these candidate melting rate ranges to obtain the optimal melting rate range for the electrode. Finally, based on the optimal melting rate range, it analyzes the electrode deviation correction rate. During deviation correction, the deviation correction time is compared with the time interval between time points to determine whether to perform deviation correction or stop the operation. This invention not only avoids the limitations of a single quality constraint or a single environmental constraint, but also avoids the target weakening problem caused by traditional weight settings. Furthermore, it avoids steel quality fluctuations caused by incomplete correction and continued deviation from the range during deviation correction, ensuring product quality stability.

The utility model discloses a consumable supply device for a 3D printer, and relates to the technical field of 3D printers. The device comprises a fixing device, the top of the fixing device is fixedly provided with a supporting mechanism, the supporting mechanism is internally provided with a driving device, the output end of the driving device is fixedly connected with a rotating mechanism, and the outer surface of the rotating mechanism is connected with a material roller in an inserted mode. According to the utility model, the plurality of groups of material rollers are arranged on the rotating mechanism, and when material supply is required to be carried out on the 3D printer, the driving device is connected with the back surface of the rotating mechanism, so that the driving device can drive the rotating mechanism to rotate for a certain angle once and then drive the material rollers outside the rotating mechanism to rotate to the conveying direction; and after material consumption of one group of material rollers is completed, the material rollers can be continuously rotated to convert the positions of the material rollers so as to achieve the effect of rapidly replacing materials, and the material rollers can be preheated in advance in the conveying process in cooperation with a preheating assembly on the jacking mechanism so as to improve the later-stage melting rate of the material rollers.

This invention discloses a method for preparing titanium alloy ingots with coordinated control of melting rate and cooling rate, specifically implemented according to the following steps: S1, establishing a finite element model of vacuum self-consuming arc melting of titanium alloy ingots, completing mesh generation, and setting core process and physical property parameters; S2, determining parameter gradient values ​​and calculating deviation; S3, dividing the melting process into three stages: arc initiation period, normal melting period, and feeding period, ensuring that the average elemental composition deviation throughout the process is within the range of 0.02~0.06; S4, evaluating and analyzing the composition at the head, middle, and tail points and the longitudinal section composition of the ingot after melting. This method solves the ingot quality problem caused by mismatched process parameters in existing VAR melting processes, improves ingot quality and performance, and reduces production costs.

The application relates to the technical field of metal smelting, in particular to a rotary refining furnace, which comprises a cylinder body, the cylinder body comprising a side wall and end covers arranged on both sides of the side wall; a rotating mechanism connected with the cylinder body, the rotating mechanism driving the cylinder body to rotate within a preset angle range; and a first combustion device comprising a first burner arranged on the side wall of the cylinder body. The rotary refining furnace can greatly improve the melting rate of materials, shorten the melting time, save energy consumption, greatly improve the uniformity of heating and prolong the service life of the furnace lining.

The invention discloses an intelligent electrode melting rate control system based on start-stop control, and relates to the technical field of electrode melting rate control. According to the intelligent electrode melting rate control system, alternative melting rate intervals of electrodes are obtained through analysis according to quality constraints, and then the alternative melting rate intervals are screened according to environmental protection constraints; and finally, the deviation correction rate of the electrode is obtained through analysis based on the optimal melting rate interval of the electrode, the deviation correction duration is compared with the time point interval duration during deviation correction, and then deviation correction or operation stopping is judged. According to the method, limitation caused by single quality constraint or single environment-friendly constraint is avoided, the problem of target weakening caused by traditional weight setting is also avoided, meanwhile, molten steel quality fluctuation caused by the fact that correction is not thorough and still deviates from the interval during deviation correction is avoided, and the quality stability of products is guaranteed.

The invention relates to the technical field of processing aids, in particular to an automatic production method of a fluoride-free processing aid and a processing aid master batch. The method comprises the following steps: preparing core-shell structure fluoride-free processing aid powder through a continuous flow reaction, premixing the core-shell structure fluoride-free processing aid powder with carrier resin, and performing melt blending granulation to obtain a melt; and monitoring a conveying process in the melt blending granulation process, and further adjusting heating parameters of corresponding sections. According to the invention, the granulation process is intelligently monitored, so that the root causes of abnormal conditions such as slipping, insufficient melting and overheating are automatically diagnosed according to real-time monitoring of parameters such as temperature, pressure, torque and the like and calculation of the melting rate, and the temperature, the screw rotating speed and the temperature gradient of each area are adaptively adjusted; and meanwhile, the melt energy storage modulus is introduced to evaluate the dispersion state, and the process is self-learned and optimized based on historical data, so that full-process intelligent closed-loop control is realized, the problems of intermittent production quality fluctuation and regulation and control lag are solved, and efficient and stable production of products is guaranteed.

A device of regulating a melting speed of an aluminum alloy smelting furnace burner. The device includes: a natural-gas flow-rate regulating assembly, an air flow regulating assembly; a natural gas burner, connected to the natural-gas flow-rate regulating assembly and the air flow regulating assembly and mounted in a melting zone of the melting furnace to melt aluminum alloy into an aluminum liquid; a scum filtration assembly, including a ceramic tube connected to a ceramic filter cylinder, a foam ceramic filter plate being merged in an aluminum liquid thermal-insulation pool; a rangefinder, mounted above the scum filter assembly; a controller for obtaining weights of the aluminum liquid corresponding to two adjacent time points, obtaining the actual melting speed according to a difference in the weights, and regulating the flow rate of the natural gas and the air flow to adjust the actual melting speed to reach a target melting speed.

A method (200) for operating an induction melting system (100), the induction melting system (100) comprising an induction coil (122), at least one for melting an electrode (E), comprising determining (210), by a control device (160) of the induction melting system (100), a net heating power of the induction melting system (100). The method also includes determining (220), by the control device (160), a melting rate, determining (230), by the control device (160), an overheating temperature of the molten electrode material (S) based at least in part on the net heating power and the melting rate, and controlling (240), by the control device (160), at least one operating parameter of the induction melting system (100) based on the determined overheating temperature.

The invention relates to the technical field of inorganic composite material cellular board production, in particular to a processing device for an inorganic composite material cellular board, and solves the problem that when raw materials of the cellular board are melted, the raw materials are slower in melting speed due to larger particles after being crushed, so that the melting time of the raw materials is prolonged. The processing device for the inorganic composite material cellular board comprises a melting equipment shell, two feeding funnels are fixed to the top end of the melting equipment shell in a penetrating and inserting mode, a crushing assembly is installed in the melting equipment shell and comprises a top-layer rotating ring, a bottom-layer rotating ring is arranged below the top-layer rotating ring, and the bottom-layer rotating ring is arranged below the bottom-layer rotating ring. And a second middle rotating ring is arranged between the top-layer rotating ring and the bottom-layer rotating ring. Through shearing force generated when multiple groups of crushing blades rotating clockwise and anticlockwise in the crushing assembly are staggered, raw materials crushed by the crusher are finely crushed, so that the melting rate of the raw materials is increased.

The utility model relates to the technical field of crucible connecting fittings, and discloses a detachable graphite crucible connecting piece which comprises a supporting vertical plate, a crucible main body, a positioning circular plate and a clamping cover, a limiting hole is formed in the positioning circular plate, the upper end of the crucible body is sleeved with the limiting hole, supporting vertical plates are installed at the bottom of the positioning circular plate at equal intervals, a locking screw is installed in the middle of each supporting vertical plate through a screw hole, one end of the inner side of each locking screw is connected with an arc-shaped clamping plate through a bearing, and the arc-shaped clamping plates are clamped to the outer side of the crucible body; an integrally-formed cone is arranged at the inner bottom of the crucible body, and a clamping cover is clamped to the position, located at the upper end of the crucible body, of the top of the positioning circular plate. The graphite crucible connecting piece is convenient for clamping and fixing the crucible main body, and is convenient to mount and dismount, so that raw materials are heated more uniformly, and the melting rate of the raw materials is improved.

This invention relates to the field of high-temperature alloy technology, and provides a highly dense high-temperature alloy and its preparation method. The preparation method of the highly dense high-temperature alloy includes the following steps: S1 preparing a high-temperature alloy vacuum consumable electrode rod; S2 subjecting the high-temperature alloy vacuum consumable electrode rod to vacuum consumable smelting; during the vacuum consumable smelting process, determining the range of melting rate reduction in the later stage of steady-state smelting based on the ingot size and alloy type of the high-temperature alloy; determining the range of melting rate reduction in the early stage of hot-sealing smelting based on the ingot size of the high-temperature alloy; and determining the smelting time in the later stage of hot-sealing smelting based on the size and alloy type of the high-temperature alloy. The preparation method provided by this application solves the problem of controlling shrinkage cavities in high-temperature alloys with different ingot sizes and alloy types, and prepares highly dense high-temperature alloy products.

This utility model relates to a sample preparation device for metallurgical analysis of melting point and melting rate, belonging to the field of metallurgical performance analysis technology in the metallurgical industry. The technical solution is as follows: a base plate (1), a shaping plate (2), and a top plate (3) are slidably connected together. The shaping plate (2) is located between the base plate (1) and the top plate (3). The shaping plate (2) is provided with multiple shaping holes (6) of different diameters. The top plate (3) is provided with filling holes (7) corresponding to the shaping holes (6). The pressure handle (4) cooperates with the filling holes (7) and the shaping holes (6). The base plate (1) is provided with base plate slides (9) on both sides, the top plate (3) is provided with top plate slides (10) on both sides, and the shaping plate (2) is provided with grooves (8) that cooperate with the base plate slides (9) and the top plate slides (10). The beneficial effects of this utility model are: simple structure, simplified operation, guaranteed sample preparation stability, reduced sample loss, and improved sample preparation efficiency.

The invention discloses a melting speed and cooling speed cooperative control titanium alloy cast ingot preparation method which is specifically implemented according to the following steps: S1, establishing a titanium alloy cast ingot vacuum self-consuming electric arc melting finite element model, completing grid division, and setting core process and physical property parameters; s2, determining a parameter gradient value and calculating a deviation degree; s3, the smelting process is divided into an arcing period, a normal smelting period and a feeding period, and it is ensured that the average component deviation degree of elements in the whole process is within the range of 0.02-0.06; and S4, evaluating and analyzing the longitudinal three-point components of the head, the middle and the tail and the longitudinal section components of the cast ingot after smelting is finished. According to the method, the ingot casting quality problem caused by mismatching of technological parameters in the existing VAR smelting process is solved, the ingot casting quality and performance are improved, and the production cost is reduced.

The invention relates to the technical field of rare earth-doped composite alloy preparation, in particular to a high-temperature-resistant rare earth-doped composite alloy material and a preparation method thereof.The preparation method comprises the steps that a consumable electrode is smelted; the reduction amount of the melting speed of the consumable electrode in the smelting process is obtained, and the vacuum pumping speed is adjusted; the falling length of molten drops is obtained, and the direction of an induced magnetic field of a plasma area vertically below the consumable electrode is determined; the stirring rotating speed of the electromagnetic stirring mechanism is determined according to the length ratio of time sections with opposite magnetic field directions in the induced magnetic field direction and the electromagnetic stirring magnetic field direction; a molten pool splashing plane image is obtained, the height section of the corresponding impurities on the consumable electrode is determined, and the working current in the smelting process is adjusted according to the height section; and after the smelting process is completed according to the working current, a generated cast ingot is subjected to thermal machining and heat treatment, and the high-temperature-resistant rare earth-doped composite alloy material is formed. The preparation efficiency of the rare earth doped composite alloy is improved.

The utility model relates to a kind of gradient thermal conductivity mould of hot melt socketed plastic pipe and pipe fitting.It solves the technical problems that existing thick-walled pipe fitting and thin-walled pipe cannot reach synchronous melting state etc., including the male die body matched with thick-walled pipe fitting and the female die body matched with thin-walled pipe, the male die body is made of high-thermal-conductivity metal material and the female die body is made of low-thermal-conductivity metal material, the female die body inside has a limit ring, and the limit ring circumferential outside and the female die body circumferential inside form annular groove for the insertion of thin-walled pipe.The advantage is that: the male die body of high-thermal-conductivity material and the female die body of low-thermal-conductivity material can facilitate the control of the hot melting rate of thick-walled pipe fitting and thin-walled pipe, and ensure the synchronous melting state of thick-walled pipe fitting and thin-walled pipe.The limit ring can limit and support thin-walled pipe, effectively prevent thin-walled pipe from reducing in diameter, and effectively reduce the reduction rate.Annular groove can accommodate the melting overflow of thin-walled pipe, and ensure the hot melting effect of thin-walled pipe.

The invention relates to a method for detecting the carbon content of stuffing sand, which adopts a high-frequency infrared carbon-sulfur instrument to detect and determine the accurate factors such as sample weighing amount, fluxing agent type and dosage, stacking sequence and the like, and improves the oxidation melting rate and carbon release in the detection process of the high-frequency infrared carbon-sulfur instrument, thereby accurately detecting the carbon content in the stuffing sand. The analysis method is simple and easy to master, the analysis speed is high, and the using effect of the stuffing sand in the molten steel casting process is guaranteed.