258 results about "Process design" patented technology

The invention relates to the technical field of machine tool machining, and discloses an off-axis aspherical mirror polishing method, device and equipment and a storage medium, and the method comprises the steps: building a female aspherical geometric model, and dividing an off-axis region based on the female aspherical geometric model and a preset design requirement; performing trajectory planning based on the off-axis region to obtain a polishing path; constructing a removal function model based on the off-axis region; obtaining a surface shape residual error from the off-axis aspherical mirror to be polished, and solving and obtaining residence time based on the removal function model, the surface shape residual error and the polishing path; constructing a five-axis machine tool kinematic model; the residence time and the polishing path are substituted into the five-axis machine tool kinematic model to obtain polishing control parameters; through the process design of off-axis area positioning, path planning, modeling removal, residence solution and coordinate conversion, stable control over the machining precision of the asymmetric structure of the off-axis aspherical mirror is achieved, and the high-precision manufacturing requirement of a high-performance optical system for the off-axis aspherical mirror is stably met.

The invention discloses a large metal thin-wall component manufacturing method based on stress distribution state management, which comprises the following steps of: aiming at the configuration of a large metal thin-wall component to be manufactured, constructing a manufacturing process combining reverse modeling analysis and forward process design; the reverse modeling analysis starts from the working step at the tail end of the manufacturing process, the stress distribution state between the working steps serves as a transmission and control element, and in the direction from the tail end to the front end, each working step proposes the final stress distribution state meeting the most simplified requirement of the manufacturing scheme of the working step for the previous working step; and based on the result of the reverse modeling analysis, on the basis of the final stress state determined by the previous step, the tool and the forming process of each step are determined, so that the final stress distribution state of the component manufactured by the step meets the requirements of the next step. The problems that the forming precision of a large metal thin-wall component welding component is poor, the precision coordination consistency of all procedures is poor, and the component manufacturing quality is difficult to guarantee are solved.

The invention discloses a TC11 titanium alloy thick-wall pipe diameter forging process parameter optimization method, which relates to the technical field of metal plastic forming process optimization, and comprises the following steps: clearly defining a structure defect problem caused by non-uniform deformation energy in diameter forging of a specific pipe blank and an optimization target; constructing a simulation model to calculate forming sizes and internal deformation energy distribution under different process parameters; training a neural network agent model embedded with a deformation energy uniformity optimization target; using the model to drive a multi-objective optimization algorithm, and automatically searching an optimal process parameter combination; and selecting and outputting a final optimal process parameter from an optimization result. According to the method, the quantitative index reflecting the deformation energy distribution uniformity is embedded into the process optimization model, so that the internal deformation energy distribution of the material can be collaboratively optimized while the macroscopic size is optimized, and the problem that the recessive factor which affects the final structure performance of the component is difficult to effectively evaluate and actively regulate and control in the process design stage in the existing method is solved.

The invention provides a plastic pipe service life test method and device, and the method comprises the steps: filling a low-level water tank and a circulation test pipeline communicated with the low-level water tank with a test solution, injecting the test solution into a high-level water tank communicated with the low-level water tank, and enabling the interior of the high-level water tank to have a preset test solution initial volume; wherein the high-level water tank is higher than the low-level water tank by a preset height, and a gas phase space is formed at the top of the high-level water tank; charging compressed gas into the gas-phase space to enable the gas-phase space of the high-level water tank to have preset pressure so as to apply back pressure to the test solution in the low-level water tank; under the back pressure condition, heating the test solution in the low-level water tank to a target test temperature; the backpressure condition and the target test temperature are maintained, and the service life of the plastic pipe sample in the circulation test pipeline is tested. Through the integrated structure and process design, the system is in a stable high-temperature and high-pressure test state, the energy utilization efficiency is improved, the operation cost is reduced, and the test efficiency is improved.

The invention discloses 800MPa-grade high-strength steel and a production method thereof, and belongs to the technical field of metal materials. Manufacturing of the resource-friendly hot-rolled automobile steel plate is achieved through combination of component design and process design, the hot-rolled steel plate and the manufacturing process thereof are low in yield ratio and alloy content, meet the personalized use requirements of light-weight counter-weight commercial trucks, are suitable for automobile structures and have certain economical efficiency, the use amount of Nb, V and Ti alloy is saved, and the production cost is reduced. The alloy is suitable for square tubes, structural members and the like of commercial heavy trucks, reduces dependence on foreign alloys in China, increases the added value of products, and improves the competitiveness of the products.

The invention relates to the field of metal material processing, in particular to 610 MPa thin-gauge automobile steel and a preparation method thereof. The steel comprises chemical components in percentage by weight as follows: 0.04%-0.06% of C, 0.35%-0.45% of Si, 1.40%-1.50% of Mn, smaller than or equal to 0.050% of Als, 0.030%-0.050% of Nb, 0.25%-0.35% of Cr, smaller than or equal to 0.015% of P, smaller than or equal to 0.003% of S, smaller than or equal to 0.0050% of N and the balance of Fe and inevitable impurities. According to the invention, a ferrite and bainite structure is realized through combination of component design and process design, and high-strength, high-plasticity and high-surface-quality steel plate production is realized.

This invention discloses a system and method for extracting helium from natural gas. The system includes an air expander, a cooler, a cold box, and a helium purification system. The cold box includes a main heat exchanger, an air-liquid separator, and an LNG-liquid separator. The helium purification system includes an oxygen-addition and hydrogen-removal reactor, a helium purification system cooler, a helium purifier, a circulating compressor, a booster compressor, and a Dewar flask. The Dewar flask contains a heat exchanger, a gas-liquid separator, and an adsorber. This invention features a reasonable process design, simple equipment, and easy operation, achieving a helium extraction rate of up to 98%. By delivering methane to users in the form of LNG and using low-temperature adsorption to produce pure helium, the economic value of the product is improved.

The application is suitable for the technical field of electrochemical performance test, and provides a method for testing the electrocatalytic performance of a transition metal oxide film. The method comprises the steps of film sample pretreatment, test electrolyte preparation, electrochemical test system building, electrochemical test parameter setting, and test data processing and analysis. The application optimizes the key parameters and process design related to the test according to the characteristics of the transition metal oxide film, and realizes comprehensive and accurate evaluation of the electrocatalytic performance of the film. The test method has high standardization, clear operation process and good repeatability, and the test result is accurate and reliable and has good comparability. The application can provide a unified evaluation standard for the electrocatalytic performance of the transition metal oxide film for different research institutions, and provide a reliable basis for the performance evaluation and application research of the film, which is conducive to promoting the application research of the film in the field of new energy.

The application provides a coal quality improving and caking enhancing dust inhibitor and a preparation method thereof. Through synergistic effect of components, the coal quality improving and caking enhancing dust inhibitor can not only form a tough solidified film on the surface of coal, effectively inhibit dust flying and reduce coal loss, but also improve apparent calorific value of coal and improve coal quality through catalytic oxidation and pore filling mechanism. A composite wetting system can significantly reduce surface tension of a solution, and enhance the penetration and wrapping capacity of coal dust. A bonding system can form a solidified film with a three-dimensional network structure, and provide excellent wind erosion resistance and mechanical strength. Meanwhile, the quality improving and caking enhancing system can form a dense oxidation layer by catalyzing oxidation of light components on the surface of coal, and adsorb moisture, thereby reducing volatile loss and improving the calorific value of coal. In addition, the use of auxiliary components ensures the stability and environmental friendliness of the product under different environmental conditions. The preparation method is reasonable in process design, the product is stable in performance, and is suitable for industrial production.

This invention relates to the field of metal additive manufacturing, and more particularly to a pressure vessel steel powder for nuclear power plants and its preparation method. The pressure vessel steel powder comprises the following components: C: ≤0.2wt%; Si: 0.1-0.3wt%; Mn: 1.15-1.60wt%; S: ≤0.005wt%; Cr: ≤0.25wt%; Ni: 0.5-0.8wt%; P: ≤0.008wt%; Mo: 0.43-0.57wt%; V: ≤0.01wt%; Cu: ≤0.08wt%; Al: ≤0.04wt%; Co: ≤0.03wt%; with the balance being iron. This invention achieves precise control of the powder's chemical composition through targeted process design and impurity control strategies, ensuring that all performance indicators fully comply with the requirements of the "Design and Construction Rules for Mechanical Components of Pressurized Water Reactor Nuclear Island" standard.

The invention discloses a design method of a hinge type curved pipe pressure balance type expansion joint based on CAESAR II, and relates to the technical field of simulation of expansion joints in CAESAR II. The method comprises the steps that an expansion joint body pipe section of the hinge type curved pipe pressure balance type expansion joint is established in a CAESAR II according to initial design parameters, a hinge model comprising multiple sections of hinge plates connected in sequence is established in the radial direction of the expansion joint body pipe section, and a pin shaft is simulated by applying a first constraint to the connecting position of every two adjacent hinge plates, establishing a simulation model of the hinge type curved pipe pressure balance type expansion joint; performing displacement analysis on the simulation model to obtain an axial displacement value and a transverse displacement value; and updating the simulation model based on the process design parameters, and carrying out iteration. The technical problems that according to a traditional method, only a whole rigid body structure can be adopted for simple simulation, the real mechanical behavior of the expansion joint cannot be reflected, the displacement response of the expansion joint is seriously shifted from the actual physical state, and design of materials, structural parameters and the like of the expansion joint is not accurate are solved.

The invention belongs to the field of metal material processing engineering, and discloses a 450 MPa grade cold-rolled sheet for a household appliance panel and a production method of the 450 MPa grade cold-rolled sheet. The cold-rolled sheet comprises the following main chemical components in percentage by mass: 0.09%-0.13% of C, 0.01%-0.03% of Si, 0.40%-0.70% of Mn, less than or equal to 0.04% of P, less than or equal to 0.005% of S and the balance of Fe and inevitable impurity elements. Through reasonable chemical components and preparation process design, the cold-rolled sheet for the household appliance panel, which has excellent performances such as high strength and the like, good shape and lower cost, is produced.

This utility model discloses a desulfurization system for a coal-fired boiler, including a desulfurization tower connected to the flue gas duct of the coal-fired boiler via a flue gas inlet pipe. A wet electrostatic precipitator, an induced draft fan, and a chimney are sequentially installed on the flue gas outlet pipe behind the desulfurization tower. The desulfurization tower has multiple layers of spray pipes inside, and a slurry pool is located at the bottom of the tower. The slurry pool is connected to the spray pipes via a circulation pipe, which is equipped with a circulation pump. An oxidation pipe is connected to the top of the desulfurization tower, and an oxidation fan is installed on the oxidation pipe. A desulfurizing agent preparation mechanism is connected to the slurry pool at the bottom of the desulfurization tower. A slurry treatment mechanism is also connected to the bottom of the desulfurization tower via a pipe. This utility model optimizes process design, enhances material circulation, and implements precise parameter control. By utilizing spray layer atomization and forced oxidation by the oxidation fan, it ensures desulfurization effectiveness, improves the overall operating efficiency of the system, and enhances resource utilization through gypsum dewatering and filtrate recycling.

An improved multi-target regression algorithm based on target specific features is combined with a non-dominated sorting genetic algorithm to construct a double-layer structure multi-target algorithm, so that the problems of data distortion possibly caused by data enhancement, poor feature engineering generalization ability, negative migration caused by large inter-domain difference and the like are avoided, and the method is suitable for large-scale popularization and application. By capturing the correlation among a plurality of output targets, a high-precision model for a high-dimensional small data set is constructed, and the machine learning assisted hot-rolled ultrahigh-toughness steel component and process design with low data set cost is realized.

The invention discloses a wheel forging and rolling composite forming process based on deformation distribution and a structure regulation and control method, and belongs to the technical field of wheel manufacturing. The method comprises the steps that a composite forming path of pre-forging, finish forging and finish rolling is adopted, the deformation amount of each procedure is scientifically distributed, pre-forging accounts for 70%-80%, finish forging accounts for 15%-20%, and finish rolling accounts for 5%-10%, so that forming precision and microstructure control is achieved. Meanwhile, quantitative prediction is carried out on microstructure evolution in the whole forming process by constructing a multi-scale digital simulation platform integrating a material constitutive model, a microstructure evolution model and a cellular automaton. And based on a prediction result, active and accurate regulation and control of microstructures of different parts of the wheel are realized through virtual iteration optimization of key process parameters such as temperature, deformation and strain rate, and finally, the complex-structure wheel with high dimensional precision, uniform and fine structure and excellent comprehensive performance is obtained. According to the wheel shape-character collaborative manufacturing method, shape-character collaborative manufacturing of the wheel is achieved, and the scientificity and efficiency of process design are improved.

The application belongs to the technical field of wire rod production method, and particularly relates to a wire rod for fine steel wire cord, steel wire, cord and a manufacturing method thereof. The chemical composition of the wire rod comprises, in percentage by mass, C: 0.79-0.84%, Si: 0.15-0.30%, Mn: 0.45-0.55%, P≤0.015%, S: 0.0030-0.010%, total oxygen: 0.0008-0.0022%, Als: 0.0002-0.0012%, Mg: 0.0002-0.0012%, Nb: 0.0003-0.0009%, Mo: 0.0003-0.0012%, and the balance of Fe and inevitable impurities. The application makes the cross-section hardness distribution of the wire rod and the steel wire uniform through chemical composition and production process design, and meets the plying performance requirement of the user in the process of processing the fine steel wire cord from the wire rod.

The invention discloses a glass hot-bending forming pressure parameterization evaluation method, system and equipment and a storage medium, belongs to the technical field of glass hot-bending forming, and solves the technical problems that manual calculation of glass hot-bending forming pressure is complex and error-prone. The method is characterized in that secondary development is carried out based on CAD software to realize glass hot bending forming pressure parameterization evaluation, and the method comprises the following steps: step 1, creating a graphical user interface; 2, creating an algorithm model for calculating the hot bending forming pressure of the glass; step 3, acquiring calculation parameters for calculating the hot bending forming pressure of the glass through the graphical user interface; and 4, inputting the calculation parameters into the algorithm model, and calculating to obtain the target pressure required by the hot bending forming of the glass. According to the method, the key parameters input by the user can be automatically obtained or received, the embedded material database and the calculation model are called, the required hot bending forming pressure is quickly and accurately calculated, and the result is presented in a visual mode, so that the efficiency and the accuracy of process design are remarkably improved.

The utility model discloses a liquid hydrogen adding machine, which relates to the technical field of liquid hydrogen adding and comprises a filling pipeline assembly, a gas return pipeline assembly, a precooling pipeline assembly and a safety emptying pipeline assembly, and the filling pipeline assembly, the gas return pipeline assembly and the precooling pipeline assembly are all communicated with the safety emptying pipeline assembly. According to the scheme, through more scientific and reasonable circulating pre-cooling process design, full pre-cooling of a pipeline system and core components can be guaranteed in the large and small circulating pre-cooling process of the hydrogen liquid adding machine, and meanwhile the situation that the service life and the quality stability of the gas phase flowmeter are affected by scouring of a hydrogen low-temperature medium in the pre-cooling process is avoided; in addition, the BOG return port is separated from the liquid phase port, so that the temperature rise of the storage tank caused by BOG is avoided.

The invention belongs to the field of casting process design, and particularly relates to an auxiliary frame light-weight pouring system which comprises a bottom pouring gate, a first control arm connecting lug, a second control arm connecting lug and a third feeding channel which are sequentially connected to an auxiliary frame. The auxiliary frame bottom pouring mode is adopted, feeding is conducted through the control arm lug of the body, a special casting feeding channel does not need to be designed on the auxiliary frame body, the product weight of the auxiliary frame can be reduced, and the lightweight design of the auxiliary frame product is achieved; on the other hand, the bottom pouring mode does not need to design a cross gate, a dead head and the like, the use amount of molten aluminum of a process pouring gate is reduced, the process weight of the auxiliary frame can be reduced, and the production cost of the auxiliary frame is saved; in addition, in the bottom pouring type pouring mode, molten aluminum rises layer by layer from bottom to top, pressure is continuously transmitted from bottom to top, and the production stability and the process reliability of the auxiliary frame can be further improved.

The application discloses high-grade thin-gauge non-oriented silicon steel 35W360 and a preparation method thereof. The non-oriented silicon steel has the following chemical components in percentage by mass: C: <0.0030%, Si: 2.30-2.70%, Mn: 0.35-0.60%, P: <0.020%, S: <0.003%, Al: 0.45-0.65%, N: <0.0030%, O: <0.0020%, Ti: <0.0025%, and the rest is Fe and inevitable inclusions, and the total percentage by mass is 100%. The application adopts reasonable components and process design, and produces thin-gauge non-oriented silicon steel with high magnetic properties through the following procedures: hot metal desulfurization-smelting-vacuum treatment-continuous casting-hot continuous rolling-normalization pickling-cold rolling-annealing coating.

The present application relates to a kind of part assembly tolerance sensitivity identification method and system, obtain assembly dimension chain and assembly sequence according to the three-dimensional process design model of assembly, obtain the assembly process model corresponding to each process in assembly sequence;For each assembly process model, obtain the position coordinates of the newly assembled plate parts under the process relative to the assembly reference, the distance size of plate parts along the direction of assembly dimension chain, the quantity of embedded parts of the process, the quantity of assembly joint surface and the dimensional tolerance of plate parts, with the position coordinates, distance size, embedded part quantity and plate parts constitute the unit sample of the process;Unit sample of all processes is sequentially constituted into sample set matrix and standardized;Design the assembly tolerance sensitivity evaluation function based on TOPSIS algorithm, evaluate the matrix after standardization, obtain the sensitivity score of each plate part, so that the influence degree of each plate part assembly tolerance on overall assembly accuracy is quickly and accurately obtained.

The application provides a high-efficiency carburizing method for carburized medium manganese steel and belongs to the technical field of metal materials. The present research takes solid carburizing technology as the core and aims to explore the influence of different carburizing processes on the thickness and quality of the carburized layer. From the perspective of process design, by analyzing the medium manganese steel samples under different carburizing time and temperature conditions, it is found that under certain carburizing time and temperature conditions, ideal carburized layer thickness and carbon content can be obtained. The carburized layer thickness obtained by double-temperature carburizing is 615-952 mu m, and the hardness is as high as 276.7 HV. By controlling the final carburizing temperature and holding time, the control of different carburized layer thickness is realized. Through the present research, important clues for optimizing process parameters and controlling the thickness of the carburized layer are provided, and beneficial references for further optimization of medium manganese steel materials in terms of high strength, wear resistance and the like are provided.

The invention discloses an annealing and pickling production method of a 304 stainless steel checkered plate, and relates to the field of metal material processing. The annealing and pickling production method of the 304 stainless steel checkered plate comprises the steps of uncoiling, welding, continuous annealing, scale breaking, withdrawal and straightening, shot blasting treatment, pickling treatment, quality detection and coiling and weighing. According to the method, an innovative process route of physical scale breaking, shot blasting pretreatment and fully mixed acid stepped pickling without hydrochloric acid and sulfuric acid is adopted, and hydrochloric acid and sulfuric acid which are high in pollution and danger are completely abandoned. Most surface scale is effectively removed through mechanical scale breaking and shot blasting, and the flow design of heavy brushing, pre-pickling, secondary heavy brushing and multi-section acid mixing ensures that the scale on the surface of the pattern is completely removed through cooperation of mechanical brushing and chemical pickling and step-by-step decreasing of acid concentration and temperature, and the problems that convex parts are over-corroded and concave parts are not cleaned up are solved.

This invention discloses a low-nickel, high-nitrogen super austenitic stainless steel, its billet, a billet preparation method, and its applications. The chemical composition of the stainless steel is: C≤0.020%, Si≤0.60%, Mn≤0.80%, P≤0.025%, S≤0.020%, Cr: 19.50~20.50%, Ni: 16.50~17.50%, Mo: 6.0~6.3%, N: 0.45~0.55%, Cu: 0.5~1.0%, and ( w Ni + w Cu + w N )≥17.5, ( w Gr +3.3× w Mo +16× w N ≥45. This invention, through optimized control of chemical composition and a process design of initial rolling + homogenization treatment + radial forging + online solution treatment, enables the low-nickel, high-nitrogen super austenitic stainless steel to exhibit excellent corrosion resistance, significantly reducing alloy and manufacturing costs while meeting the basic performance requirements of super austenitic stainless steel.

The invention discloses a method for improving test panel welding test performance result accuracy. The method comprises the following steps that temperature measuring points C are sequentially arranged outwards perpendicular to a workpiece welding seam, and temperature measuring devices are installed at the temperature measuring points C; welding the workpiece, and recording a temperature curve of the workpiece until the temperature of the temperature measuring point C is cooled to 50 DEG C; temperature measuring points C'are sequentially arranged outwards in a manner of being perpendicular to the weld joint of the test plate, and temperature measuring devices are mounted at the temperature measuring points C '; the temperature measuring point C'of the test plate corresponds to the temperature measuring point C of the workpiece, and the distances between the correspondingly arranged temperature measuring points and the center of the welding seam are equal; the test plate is welded, the test plate is rapidly cooled through an accelerated heat conduction device, and the welding temperature is recorded till the temperature of a temperature measuring point C'is cooled to 50 DEG C; the peak temperature of the temperature measuring point and the time for cooling the peak temperature of the temperature measuring point to 50 DEG C are the same or similar; and carrying out physical and chemical property test on the welded test plate. The method has the beneficial effects that the impact toughness of the test plate is similar to that of a workpiece, and the method is used for guiding field production line welding process design and optimization.

The present application relates to the technical field of metallurgical continuous casting, and provides a method for predicting the solidification structure distribution of continuous casting billets based on a solidification heat transfer model optimization, which comprises the following steps: obtaining the actual process parameters, the CET starting position and the actual distance from the CET ending position to the surface of the casting billet of a reference scheme, and obtaining the thermal physical property parameters of the steel billet through material calculation; multiplying the basic thermal conductivity coefficient by a thermal conductivity conversion coefficient to obtain an equivalent thermal conductivity coefficient, combining the reference scheme parameters, establishing a solidification heat transfer model and performing simulation, extracting the temperature gradient G and the solidification rate R in the thickness direction of the casting billet, calculating the G 2 / R curve, and determining the critical values of the CET starting and complete conversion according to the actual CET starting and ending positions; inputting the target process parameters into the solidification heat transfer model for simulation to obtain the G 2 / R curve, and predicting the CET starting and ending positions under the target scheme through the critical values. The present application can realize the accurate prediction of the CET conversion in the solidification process of the continuous casting billet, and improve the numerical simulation efficiency and the process design efficiency.

The invention relates to the technical field of polyurethane material curing processes, in particular to a polyurethane pouring sealant curing process design method and system based on curing kinetics, and the method comprises the following steps: selecting a glue solution sample of a polyurethane pouring sealant, and carrying out curing kinetics analysis on the glue solution sample to obtain curing reaction parameters of the polyurethane pouring sealant; designing a stepped heating curve; curing and comparing the polyurethane pouring sealant according to the stepped heating curve and a constant-temperature curing method, and optimizing the stepped heating curve according to a comparison result to obtain an optimal stepped heating curve; in a curing process database, calling a curing process parameter set according to the curing target; and integrating the optimal stepped heating curve and the curing process parameter set to generate a curing process instruction. According to the invention, the problems that the curing process depends on experience and the temperature control precision is insufficient are effectively solved, the scientific design and automatic generation of the polyurethane pouring sealant curing process are realized, and the process control precision is obviously improved.

This invention relates to the field of precast building component assembly and processing technology, and discloses a high-efficiency assembly and processing device for precast building components. The device includes a mounting base, on which symmetrically distributed conveyor frames are mounted. Conveyor belts are mounted on the conveyor frames. Sliding members, symmetrically distributed between two conveyor belts, are mounted on the mounting base. Support frames are mounted on the sliding members, and several spaced support rollers are rotatably mounted on the support frames. In the process of the alignment partition moving down along the alignment groove and separating from the gap of the precast metal slab, the invention first drives the precast metal slabs fixed above the two sets of support rollers to move synchronously to both sides to separate. This fundamentally avoids the problem of friction between the alignment partition and the slabs during the downward movement of the alignment partition, which could cause slab misalignment. After the alignment partition completes its downward movement, the separated precast metal slabs will synchronously reset, ensuring that the gap between the slabs accurately meets the process design requirements for welding seams, guaranteeing the accuracy and quality of subsequent welding operations.

The application provides a high-precision turbine disc mortise slow wire cutting process design method, which comprises the following steps: step 1, selecting a wire cutting device; step 2, verifying the processing precision of the device; step 3, designing a clamping scheme of a test piece; step 4, performing wire cutting rough machining on the test piece; step 5, performing wire cutting fine machining on the test piece, and performing wire cutting machining on the test piece mortise according to the final required shape; step 6, monitoring the deformation of the test piece, selecting axial and radial representative features on the test piece to monitor the size and technical conditions in the machining process, and forming a whole-process record; and step 7, performing wire cutting machining on a formal part according to steps 3-6 of the test piece. The application has the advantages that the process scheme of the application can realize high-precision control of the mortise, the deformation of the part in a free state can be controlled within 0.02 mm, the deformation control state of the part is excellent, and greater value is created.