119 results about "Grain distribution" patented technology

Systems and methods are configured to receive one or more photographs depicting a plurality of cuttings, to identify one or more individual cuttings of the plurality of cuttings depicted in the one or more photographs, to extract morphological, color, texture, grain size, and grain distribution data from each individual cutting of the one or more individual cuttings, to perform lithological classification of the one or more individual cuttings at a plurality of hierarchical levels based at least in part on the extracted morphological, color, texture, grain size, and grain distribution data or based at least in part on features directly extracted from the one or more individual cuttings that represent the morphological, color, texture, grain size, and grain distribution data, and to present a consolidated results summary of the lithological classification of the one or more individual cuttings at the plurality of hierarchical levels via the analysis and control system.

The invention discloses a high-consistency cutter passivation process and device based on flexible abrasive auxiliary force rheological polishing, and relates to the technical field of cutter passivation. The process comprises the following steps: step 1, preparing a gradient grinding material; step 2, programmable fiber flow control; 3, multi-stage gradient machining; and 4, intelligent closed-loop control. The device comprises a gradient abrasive material preparation module, a programmable fiber flow control device, a multi-degree-of-freedom machining platform, an intelligent monitoring module, a polishing solution circulation module and a protection module. Through the three-stage abrasive grain grading and programmable fiber flow control technology, magnetic particles and an external magnetic field do not need to be relied on, the agglomeration state of the polishing solution is directly damaged through fiber vibration, the fluid flow speed of a complex cutting edge area is increased, abrasive grain distribution uniformity is improved, laser confocal real-time monitoring and PID algorithm dynamic adjustment are combined, the precision is remarkably improved, and the polishing effect is good. And the method is particularly suitable for precise passivation of superhard cutters such as PCD cutters and the like.

The invention relates to the technical field of 3D printing, and discloses a fiber reinforced composite material 3D printer and a printing method, current deposition tows are heated / cooled under the action of a preset interlayer pressing force through an interlayer pressing device, interlayer fusion can be promoted, the interlayer bonding strength can be improved, the heat history in the wire cooling process can be eliminated, and the 3D printing quality of the fiber reinforced composite material is improved. The crystallization behavior, the grain size and the grain distribution of a polymer in a printing wire material are controlled, and the microscopic uniformity of a composite material printing product is improved. The side face and the upper surface of the current deposition tow are subjected to hot-pressing shaping through the inter-channel pressing device, meanwhile, secondary hot-pressing is conducted on the adjacent printing layer deposition tow, resin of the current deposition tow and resin of the adjacent printing layer deposition tow can be melted and flow, so that the inter-channel gap between the adjacent printing layers is filled, and the printing effect is improved. And the inter-track bonding strength is improved.

The invention belongs to the technical field of grain loading supervision, and particularly relates to a grain transport vehicle grain loading state detection system and method based on visual identification, and the system comprises a visual collection module, an image processing and analysis module, a loading state evaluation module, an intelligent sampling auxiliary module and a cloud management and control module. Real-time pictures of grains in the vehicle are captured through the visual acquisition module, the image processing and analyzing module generates a three-dimensional distribution image of the grains based on the real-time pictures, the loading state evaluation module judges whether the grain loading state of the grain transporting vehicle is qualified or not according to the grain distribution image, the loading problem can be found and corrected in time, and the working efficiency is improved. The intelligent sampling auxiliary module automatically plans the sampling path and depth of the intelligent sampling machine according to the grain loading state information synchronized by the cloud management and control module, so that accurate and efficient automatic intelligent sampling is realized, and the accuracy of grain quality detection is improved.

The embodiment of the invention discloses a wafer measurement method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring a reference image obtained by scanning a reference wafer; acquiring position information of reference crystal grains in the reference wafer according to the reference image so as to obtain a crystal grain distribution diagram; and performing morphology measurement on the to-be-measured crystal grains in the to-be-measured wafer according to the crystal grain distribution diagram to obtain morphology measurement data of the to-be-measured crystal grains. According to the scheme, real-time measurement can be carried out on the wafer based on the scanned three-dimensional data of the wafer in the wafer scanning process, and the measurement efficiency of the wafer can be improved.

The invention discloses a wafer detection data analysis method, device and equipment, a medium and a product, and is applied to the technical field of chip manufacturing. According to the method, a detection data picture comprising a plurality of crystal grains is displayed, so that a related user can conveniently divide a plurality of corresponding target areas in the detection data picture according to requirements; and performing data analysis on the detection data picture based on each target area. Therefore, according to the technical scheme, the detection data generated by actual production can be flexibly classified by freely dividing the areas, so that the requirement of accurate data analysis is met. By means of free selection of a user, region division can be closer to facts, detection data of different distribution modes can be visually checked and analyzed, grain distribution can be rapidly tracked and analyzed, convenience is brought to data analysis of uneven distribution or special distribution modes, and the grain distribution rule in a detection data picture is effectively judged.

The present invention relates to the technical field of elevators, and more specifically, to a grain elevator based on modern agricultural machinery and equipment, comprising a base, an elevator structure, a drive structure, a feeding structure, a rotating structure, and an opening and closing structure. The setting of the feeding structure avoids the blockage problem caused by excessive accumulation of grain at the elevator feed port, making the grain distribution more uniform, while facilitating operators to add grain to the equipment and improving flexibility. The setting of the rotating structure facilitates rapid adjustment of the direction of the discharge pipe on the elevator, thereby facilitating the delivery of grain to grain storage tanks in different directions, avoiding the adjustment of the overall direction of the elevator and improving operational efficiency. The setting of the opening and closing structure can flexibly adjust the valve opening according to production needs, accurately control the discharge flow of materials such as grain, and quickly cut off the discharge, with strong flexibility.

The invention discloses a microstructure digital processing method and system for a metal material EBSD result, and the method comprises the steps: defining the physical orientation of a material, namely describing the orientation of a crystal through three continuous rotations; performing image processing on the acquired microstructure image to obtain a distribution rule of crystal grains; the microstructure of the material is re-identified and combined, and small crystal grains which cannot be identified in EBSD data processing software are eliminated; assigning the microstructure image obtained by re-identification to obtain a material microstructure segmentation result; and linking the crystal grains with Euler angle orientation exported from EBSD data processing software to obtain orientation distribution data of the microstructure of the material. On the basis of EBSD data processing software, grain distribution and Euler angle orientation information in the EBSD data processing software are extracted, the Euler angle orientation information can be used for subsequent cellular automaton model and theoretical analysis, the resolution can be adjusted according to needs, and the recognition precision is improved.

The invention relates to the technical field of grain drying equipment, in particular to an electric rapid grain discharging device of a grain dryer and an intelligent control method, and the electric rapid grain discharging device comprises a grain storage bin, a grain distributing assembly, a conveying assembly and an intelligent regulation and control unit. The grain distributing assembly achieves flexible grain discharging through a rotating disc and an adjusting ring, the conveying assembly adopts a conveying belt with protruding strips to prevent grain from sliding, and the intelligent regulation and control unit combines multi-sensor data and a fuzzy logic algorithm to dynamically adjust the grain discharging speed and flow. Through structure optimization and intelligent control, the grain discharging efficiency, stability and adaptability are remarkably improved, the problems of unstable flow and low intelligent degree in the prior art are solved, and reliable technical support is provided for modernized agricultural production.

The invention provides a preparation method of a high-modulus, high-strength and high-fatigue-resistance aluminum-based composite board. The high-modulus, high-strength and high-fatigue-resistance aluminum-based composite board is obtained by sequentially carrying out semi-continuous casting, hot rolling, cold rolling, solution treatment, cold rolling and aging treatment on an in-situ synthesized ceramic particle reinforced aluminum-based composite material. According to the preparation method of the aluminum-based composite board, the process is simple and reasonable, a two-stage heterostructure with non-uniform grain distribution is formed through non-uniform distribution of in-situ synthesis ceramic particles, and a multi-layer strengthening structure and a microstructure for inhibiting fatigue crack propagation are achieved; the elastic modulus, the tensile strength, the fatigue ultimate strength and the fatigue crack propagation resistance of the aluminum-based composite board are synchronously improved, and industrial production can be conducted through existing industrial equipment.

The invention discloses a multi-station automatic seed vigor modeling and efficient sorting system of a disc structure, which comprises a rotating base disc, and three stations are arranged on the rotating base disc and are respectively a feeding station, a detection station and a sorting station; wherein a feeding mechanism is arranged at the feeding station; a multi-channel spectrum detection unit is arranged at the detection station; and the transfer mechanism and the classified collection box are arranged at the sorting station. According to the multi-station seed vigor detection device, the problem that traditional seed vigor detection equipment is low in efficiency is solved, synchronous feeding, detection and suction of a large number of seeds are achieved through the multi-station design on the rotating base disc, the seed detection speed is greatly increased, and the requirement that the seed production scale is continuously enlarged in the agricultural modernization process can be better met. And secondly, the vacuum suction device, the electromagnetic vibration device and the array aperture disc are matched for use, so that array type single-grain distribution of the seeds can be realized, and a foundation is laid for subsequent accurate detection and sorting.

The invention relates to a wafer graph missing value interpolation method, device and equipment based on an exposure direction. The method comprises the following steps: acquiring an initial measurement wafer graph after a silicon wafer is scanned and developed along a first exposure direction; obtaining at least one crystal grain missing position on the preliminary measurement wafer graph; setting an exposure influence factor of the preliminary measurement wafer graph based on the first exposure direction; calculating a missing value of each crystal grain missing position based on the exposure influence factor and a first distance between each crystal grain missing position and a plurality of preset nearest crystal grain positions; and interpolating the missing value of each crystal grain missing position into the preliminary measurement wafer graph to obtain a complete wafer graph of the silicon wafer. By adopting the method, wafer graph missing value interpolation closer to real crystal grain distribution characteristics can be realized, and the effectiveness of performing characteristic analysis and data calculation by utilizing the complete wafer graph is improved.

The utility model discloses a wide-grain filling device and a powder distributing machine. The wide-grain filling device comprises a wide-grain distribution hopper, a wide-grain distribution frame and a wide-grain rotation driver; the wide-grain distribution hopper is provided with a wide-grain feeding channel; the wide-grain material distribution frame is provided with a long-wide material distribution opening, and the input end of the long-wide material distribution opening is communicated with the output end below the wide-grain feeding channel; the length-width ratio of the length-width distribution opening is greater than 1; and the wide-grain rotation driver is used for driving the wide-grain material distribution frame to rotate and adjusting the length direction and the width direction of the length-width material distribution opening. According to the scheme, width control over the filling texture can be achieved, the filling efficiency of the width texture is improved, the plate blank can form the three-dimensional, natural, unique and attractive texture, the texture is closer to the natural texture, and the problems that the texture of an existing artificial stone plate blank lacks the three-dimensional sense and the natural sense, and the filling efficiency is low are solved.

The utility model relates to a fermented grain distribution state detection device which comprises a detection part arranged above a conveying part, the detection part comprises a first detection rod and a second detection rod which are sleeved with each other and can rotate independently, and the two detection rods respectively extend towards the direction of the conveying part to form at least one material touch block; when fermented grains pass through the transmission part area corresponding to the material touch block, the material touch block drives the detection rod corresponding to the material touch block to rotate by means of pushing force applied to the material touch block by the fermented grains, the end parts of the two detection rods are respectively and rotatably supported in the bases, a detection unit is arranged in each base, and the detection units are respectively connected with the detection rods. Each detection unit is configured to output a signal representing the distribution state of the fermented grains on the conveying part in response to the rotation of the corresponding detection rod.

The invention provides a non-oriented silicon steel grain distribution characteristic characterization method and system, and relates to the technical field of metal materials, the non-oriented silicon steel grain distribution characteristic characterization method comprises the following steps: preparing a plurality of samples to be detected by using non-oriented silicon steel plates produced by a plurality of production processes; analyzing the plurality of to-be-detected samples to obtain a plurality of grain size distribution data sets corresponding to the to-be-detected samples; based on the grain size distribution density, grain grade density is obtained; inputting the grain grade density and the grain distribution parameter into a preset Rayleigh model to obtain a grain size distribution fitting image corresponding to the to-be-detected sample; on the basis of the grain size distribution fitting image, feature fitting parameters are obtained to represent grain distribution features of the to-be-detected sample. According to the non-oriented silicon steel grain distribution characteristic characterization method, the technical problem that the influence of different process parameters on grain distribution is difficult to accurately quantify in related technologies is solved.

The refrigerant valve comprises a valve seat, the crystal phase organization of the valve seat is in equiaxed grain distribution, and the forming process of the valve seat comprises a warm upsetting process. The forming process of the valve seat in the refrigerant valve comprises the warm upsetting process. The warm upsetting process can make the base body of the valve seat deform plastically, close the cracks around the inclusions in the base body, and further reduce the leakage of the refrigerant in the refrigerant valve.

The present invention belongs to the technical field of bonded copper wires, and particularly relates to a palladium-plated bonded copper wire and its preparation process. Copper, platinum, cobalt, zirconium, magnesium, strontium, rare earth metal elements and silicon are mixed to form a copper-based bonded wire material. The functions of the metals platinum, cobalt and zirconium and the combined silicon help to improve the internal grain distribution structure of the copper wire, improve the mechanical properties such as the tensile strength of the copper wire, the balling degree and the oxidation resistance; the magnesium, strontium and rare earth metal elements used help to improve the bonding performance of the bonded copper wire. The primary and secondary palladium plating processes are adopted to make the bonded copper wire have excellent tensile properties, bonding properties and oxidation resistance.

This invention relates to the field of wafer appearance inspection formulation technology, specifically to a method, equipment, and system for creating a wafer appearance defect inspection formulation program. The method includes the following steps: Step S1: Loading the wafer and confirming its information; Step S2: Setting wafer angle correction to level the wafer; Step S3: Wafer offset correction to align the wafer center with the motion platform; Step S4: Setting a grain distribution map, matching the theoretical distribution map with the actual distribution map in terms of position; Step S5: Determining the detection elements, randomly selecting a region from the grain distribution map as the detection element, and sequentially planning and selecting the remaining regions to determine multiple detection elements; Step S6: Sequentially acquiring photographs of the detection elements; Step S7: Detection training to form a wafer appearance defect inspection formulation program.

This invention discloses a three-dimensional ordered abrasive grain arrangement device, method, and additive manufacturing equipment, belonging to the field of high-performance abrasive tool manufacturing technology for semiconductors, stone, ceramics, and optical crystal materials. The device comprises three main parts: an abrasive grain arranger, a feeding mechanism, and a transfer mechanism. The abrasive grain arranger achieves ordered arrangement through negative pressure adsorption; the feeding mechanism employs a circular roller design to achieve continuous feeding of diamond abrasive grains; and the transfer mechanism achieves precise transfer of diamond abrasive grains through the cooperation of an electric cylinder and a lifting platform. This invention effectively solves the problems of scattered and uneven abrasive grain distribution leading to rapid tool wear and poor processing quality in traditional diamond abrasive tool manufacturing. Combining this device with laser additive manufacturing (SLM) equipment can achieve additive manufacturing with ordered abrasive grain agglomeration, significantly improving the sharpness, cooling characteristics, grinding performance, wear resistance, and service life of diamond abrasive tools.

According to the flexible grain warehousing control system and method, a driving platform drives a grain distributor to ascend and descend on a central stand column, and the grain distributor can be aligned with discharging openings in different height layers in the central stand column; the lifting position of the grain distributor, the grain pile height at the grain falling point of the middle-opening grain distribution groove and the grain pile height at the grain falling point of the far-opening grain distribution groove are detected, and the driving platform is controlled to drive the grain distributor to conduct lifting adjustment according to the detection result; grain is fed layer by layer from bottom to top and is uniformly fed from the periphery of the silo to the center of the silo, and due to the adoption of the layer-by-layer feeding mode from bottom to top, the falling height of the grain in the silo is reduced, so that the grain breakage rate and the grain loss are reduced, and the grain storage efficiency is improved. And each layer is uniformly fed from the periphery of the silo to the center of the silo, so that the uniform feeding of each layer is realized, the grain piles in the silo are uniformly distributed, the silo flattening workload is greatly reduced, and the flexible warehousing of the grains is realized.

The application provides a high-resolution reconstruction method for sheet microstructure modeling, and relates to the technical field of metal structure reconstruction. The application obtains sheet thickness and average grain size by performing morphology and EBSD characterization on a metal material, compiles a microstructure reconstruction program based on a space segmentation algorithm and a sheet division algorithm, and establishes a microstructure reconstruction model; the three-dimensional reconstruction model closest to the real microstructure is obtained by adjusting the control parameters in the reconstruction program, namely sheet orientation, grain distribution and iteration number; the application can quickly and accurately reconstruct the sheet microstructure, and the generated microstructure model has high compatibility and can be transplanted to various finite element software for simulation analysis.

The utility model discloses a grain drying tower with uniform grain feeding. The grain drying tower comprises a grain distributing hopper, a grain discharging opening of the grain feeding main pipe is communicated to a grain feeding opening in the upper end of the grain distributing hopper; the upper ends of the four grain distributing branch pipes are respectively communicated with four grain outlets in the lower end of the grain distributing hopper; the rotating shaft is vertically and rotatably arranged on the axis of the grain separating hopper; one end of each supporting beam is fixed to the rotating shaft; the at least three material guide plates are arranged on the at least three supporting beams in a one-to-one correspondence manner; the at least three groups of spacers are respectively arranged on the upper surfaces of the at least three guide plates; and a tower body. According to the grain drying tower with the uniform grain feeding function, it can be guaranteed that all parts in the tower body are fully and uniformly filled with grains to be dried, the technical problem that local grain shortage possibly occurs in the tower body is effectively solved, the grain drying tower can be suitable for grain drying towers of different specifications, and the grain drying quality is effectively guaranteed.

The embodiment of the present application provides a hot rolling method for an aluminum alloy strip, comprising: a hot rolling step: rolling a strip billet in multiple passes in sequence through multiple racks, and the final hot rolling temperature is 360°C to 400°C; a cooling step: cooling the aluminum alloy strip after hot rolling through a cooling device to reduce the temperature of the aluminum alloy strip to no more than 320°C; a coiling step: coiling the aluminum alloy strip after the cooling step. In the embodiment of the present application, the aluminum alloy strip after hot rolling is cooled by a cooling device to reduce its temperature to a temperature not exceeding 320°C to avoid subsequent interlayer adhesion, black wire and black spot problems, so that the final hot rolling temperature can be controlled at 360°C to 400°C during the hot rolling process, thereby increasing the recrystallization temperature of the grains and making the grain distribution of the aluminum alloy more uniform, which is beneficial to increasing the proportion of cubic texture of the aluminum alloy and improving the deep drawing property of the material.

The invention relates to the technical field of electromagnetic shielding, and discloses an electromagnetic shielding film and a circuit board, the electromagnetic shielding film comprises a metal shielding layer, the metal shielding layer comprises a first crystal grain distribution space and a second crystal grain distribution space, and the first crystal grain distribution space and the second crystal grain distribution space are adjacent in the thickness direction of the metal shielding layer; the metal shielding layer comprises a first surface and a second surface which are oppositely arranged, the first crystal grain distribution space is located in an area which extends inwards from the first surface and / or the second surface by 10%-30% of the thickness of the metal shielding layer, and the average crystal grain size of the first crystal grain distribution space is smaller than that of the second crystal grain distribution space. The first crystal grain distribution space and the second crystal grain distribution space cooperate with each other, so that the risk of fracture of the metal shielding layer is reduced, and the bending resistance and fracture resistance of the metal shielding layer are improved.

The present invention discloses a graphene oxide / barium calcium zirconate titanate composite piezoelectric ceramic with good biocompatibility and a preparation method thereof. The barium calcium zirconate titanate-based ceramic (Ba<subgt;0.85< / subgt;Ca<subgt;0.15< / subgt>Zr<subgt;0.1< / subgt>Ti<subgt;0.9< / subgt;)O<subgt;3< / subgt> is prepared according to the following steps: 1) proportioning, 2) ball milling, 3) drying, 4) calcination, 5) secondary ball milling, 6) drying, 7) sintering, 8) grinding and sieving. The graphene oxide / barium calcium zirconate titanate composite piezoelectric ceramic is prepared according to the following steps: 1) proportioning, 2) ball milling, 3) drying, 4) sieving, 5) sintering. The present invention combines the solid-phase sintering method and the rapid hot-pressing sintering method to successfully prepare the graphene oxide / barium calcium zirconate titanate composite piezoelectric ceramic. Moreover, the grain distribution of the prepared composite ceramic sample is relatively uniform, and the grain size is smaller, with high density. At the same time, the wettability and biocompatibility of the GO / BCZT composite piezoelectric ceramic material are relatively good. It is expected to further apply it in the field of biological materials and bone defect repair.

The utility model belongs to the technical field of grain screw conveyor screening, and particularly relates to a grain conveyor with a screening function, which comprises a grain feeding barrel and a support frame, the grain feeding barrel is fixedly mounted at the top of the support frame, a barrel cover is fixedly mounted at the top of the grain feeding barrel, and a conical barrel is fixedly mounted at the bottom of the grain feeding barrel. A transmission barrel is fixedly mounted at the bottom of the conical barrel, a transmission motor is fixedly mounted on the left side of the transmission barrel, a screw rod is fixedly connected to the output end of the transmission motor, spiral blades are fixedly mounted on the surface of the screw rod, a grain outlet pipe is fixedly mounted at the bottom of the transmission barrel, an air blower is fixedly mounted on the left side of the grain outlet pipe, and a grain distribution box is fixedly mounted on the right side of the grain outlet pipe; and a screening mechanism is arranged in the grain distribution box. According to the grain conveyor with the screening function, grains are screened through the screening mechanism in the grain distribution box, so that the grains are screened more conveniently, and the situation that rhizomes, weeds and the like are mixed in the grains, screening is difficult, and the grain quality is affected is prevented.

The invention provides a preparation method of high-compaction and high-electrical-property iron phosphate, and belongs to the technical field of lithium ion batteries, and the preparation method comprises the following steps: S1, preparing an iron salt solution A, an iron salt solution B, a phosphorus salt solution A and a phosphorus salt solution B; s2, adding a doping agent A into the ferric salt solution A to obtain a doped ferric salt solution A; adding a doping agent B into the ferric salt solution B to obtain a doped ferric salt solution B; adding an oxidizing agent into the phosphorus salt solution A to obtain a phosphorus-oxygen mixed solution C; s3, adding the doped ferric salt solution A and the phosphorus-oxygen mixed solution C to generate an intermediate A; adding the doped ferric salt solution B and the phosphorus salt solution B to generate an intermediate B, so as to obtain mixed slurry D; s4, heat preservation; s5, washing, drying, calcining, demagnetizing and sieving to obtain high-compaction battery-grade iron phosphate; through multi-stage concentration control and grain composition, the prepared iron phosphate material has optimized grain distribution, and the compaction density can be remarkably improved.

The invention provides a grain state-based harvester operation quality evaluation method and system, and relates to the technical field of harvester operation quality evaluation.Historical grain images in a harvester storage bin are acquired to form an image data set, and the images acquired in real time are preprocessed to obtain an image data set; the method comprises the following steps: inputting into a trained grain state recognition model, outputting a first label, calculating a crushing rate and a crushing degree, preprocessing an image collected in real time, inputting into a trained impurity recognition model, outputting a second label, calculating an impurity content, obtaining historical environment data and material characteristics of grain straws, and calculating an environment interference coefficient. The grain distribution uniformity is calculated according to the breakage rate and the breakage degree of the grains and the coordinate position of image acquisition, and the operation quality is judged according to the environment interference coefficients and the impurity rates at different time intervals and according to the grain distribution uniformity and the breakage rate and the breakage degree at different time intervals.

The application discloses a mechanism for improving the pesticide application uniformity of a grain storage pesticide application machine and a control method thereof. The mechanism comprises a grain storage micro-spraying pesticide box shell, a plurality of motors installed in the grain storage micro-spraying pesticide box shell, a plurality of blades sequentially jointed into a ring-shaped opening at the head and tail, and the blades are arranged in one-to-one correspondence with the motors. One end of the blade is connected with the output end of the motor, the other end of the blade is provided with an arc-shaped hole, the blade is slidably connected with the output end of the motor connecting adjacent blades through the arc-shaped hole, a grain distribution hemisphere with an upward spherical surface is coaxially arranged in the center of the grain storage micro-spraying pesticide box shell, the ring-shaped opening formed by the blades is coaxially arranged above the grain distribution hemisphere, and a plurality of gravity detection sensors are connected with the outer edge of the grain distribution hemisphere at one end and connected with the grain storage micro-spraying pesticide box shell at the other end.

The invention discloses a macrosegregation prediction simulation method for directional solidification of a large ingot. The method specifically comprises the following steps: (1) obtaining thermophysical parameters of a material; (2) establishing a three-dimensional model of directional solidification and large cast ingots and carrying out grid division; (3) calculating mass, momentum, energy and solute transfer required by solidification of the metal material through a four-phase coupling model, wherein four phases comprise a liquid phase, an equiaxed crystal phase, a columnar crystal phase and a gas phase; (4) setting boundary conditions; (5) dynamically judging the growth areas of the isometric crystal and the columnar crystal based on the temperature gradient and the supercooling degree threshold value, wherein the columnar crystal only starts to grow from the casting mold wall and tracks the tip position of the columnar crystal; (6) iteratively solving the conservation equation of each phase until convergence, and outputting a liquid phase fraction, grain distribution and a solute concentration field; and (7) verifying by adopting an actually produced cast ingot, and quantifying the macrosegregation degree through a segregation index (SI).