3032 results about "Casting" patented technology

The invention relates to the field of numerical control machining, discloses a numerical control machining method and system integrating thermal expansion dynamic compensation, and aims to solve the problem that precision is out of control due to thermal deformation in high-speed cutting of motorcycle light alloy castings. The method comprises the steps that distributed temperature and displacement sensors are arranged in a key area of a workpiece, and a temperature field and thermal expansion amount are collected in real time; constructing a local thermal deformation prediction model based on a material expansion coefficient and a geometric structure, and correcting a tool path in real time through a coordinate system dynamic offset algorithm; and an on-line measurement feedback mechanism is introduced, and model parameters are adaptively optimized, so that closed-loop compensation is realized. The system comprises a sensing module, a thermal deformation modeling and compensation calculation module, a coordinate dynamic correction module, an online measurement feedback module and a parameter adaptive updating module. Through millisecond-level dynamic compensation and closed-loop self-optimization, the size precision and form and position stability of the complex thin-wall part under the high-temperature working condition are remarkably improved, the rejection rate and cooling energy consumption are reduced, and the method is suitable for a high-precision batch machining scene.

The invention relates to the technical field of intelligent detection, and discloses a high-temperature alloy casting size on-line detection system based on machine vision, and the system comprises an imaging fusion module which collects image data of a high-temperature alloy casting, carries out the pixel-level registration of infrared image data and visible light image data, and generates a multispectral fusion image. The feature extraction module performs temperature distribution analysis and brightness feature extraction based on the multispectral fusion image, generates an edge confidence map and extracts a feature point set. And the calculation module performs weighted fitting on the feature points according to the feature point set to obtain thermal state size parameters. And the thermal compensation module performs thermal compensation and geometric correction on the thermal-state size parameters to obtain cold-state size parameters. And the judgment module carries out comparison to judge whether the casting is a qualified casting. According to the invention, stable imaging and accurate registration in high-temperature radiation and strong reflection environments are realized, and the detection efficiency and the size control level of the high-temperature alloy casting are improved.

The invention belongs to the technical field of metallurgical engineering, and relates to an intelligent guide grinding system and method for the surface of a casting blank. By arranging the parameter initialization module, the parameter compensation module and the deviation correction module, the problem of unstable grinding quality caused by grinding force fluctuation, temperature change and material difference in the casting blank surface grinding process is solved. The method specifically comprises the steps that the feeding speed is dynamically adjusted by collecting grinding force data in real time, thermal deformation compensation is conducted according to the casting blank temperature and the steel grade characteristics, the upper limit value is determined based on quantitative analysis of surface state parameters and historical standard samples, and adaptive adjustment of the next round of coping parameters is achieved. According to the method, the consistency of the grinding depth is effectively improved, the over-grinding risk in the high-temperature casting blank grinding process is prevented, closed-loop optimization and continuous improvement of the grinding process are achieved, the stability and reliability of the casting blank surface grinding quality are improved, and it is ensured that the product quality cannot be affected by surface defects in the subsequent rolling process of the casting blank.

The invention discloses a casting surface defect automatic detection method, which comprises the following steps of: synchronously acquiring multi-moment surface images and morphology data of a casting through multiple channels, automatically partitioning and extracting texture attributes, and realizing accurate space-time indexing; a denoising and brightness normalization algorithm is adopted to improve the consistency of basic data; in combination with a deep learning segmentation model and feature analysis, time sequence space defect matching, affine mapping, pseudo label generation and self-supervision consistency training are completed step by step, and fine-grained optimization is performed on dynamic change of a segmentation boundary. Therefore, the accuracy of defect detection is improved, and high-quality data support is provided for production process improvement and defect traceability.

An integrated energy absorbing system of a vehicle with a front integrated energy absorbing casting and a back integrated energy absorbing casting. Each front and back casting is a single unified casting that makes up the integrated energy absorbing system. Ribbed sections such as “I” sections and “C” sections make up the castings and are formed from a variety of different techniques and / or formings such as cutout, waveform profile, tapering, flaring and / or rib spacing. Additional sections such as closed section castings may also be integrated in the integrated energy absorbing system.

The invention relates to the technical field of double-roller cast rolling, and provides a roller gap control method. According to the method, in the casting and rolling process, controlled floating of a roll gap is achieved under the condition of constant opening degree by controlling the overall movement of a driving device and a roll system and the relative movement between the driving device and the roll system, and therefore the material updating process in a molten pool is stabilized. Different from a traditional technical scheme, the method can keep the two roller bodies and the side sealing device static relative to the ground in the roller gap floating period, the thickness fluctuation of the green body is effectively avoided, the abrasion rate of the side sealing plate is reduced, and therefore the stability of the cast-rolling process and the quality of the green body are improved.

The invention belongs to the technical field of image data processing, and particularly relates to an automatic evaluation method and system for the metallographic spheroidization rate of a casting, and the method comprises the steps: constructing a global gradient field of a metallographic image of the casting; calculating a centripetal index by using a negative gradient vector and positioning a graphite particle physical center; determining a physical boundary based on the ratio of the tangential slip amount to the radial projection intensity on the ray path; obtaining a compactness index based on the consistency of the internal negative gradient vector and the radial direction; and the spheroidization score is calculated by combining the contour roundness and the compactness index, and the spheroidization rate is counted and output. According to the method, the problem that the internal crushing defect cannot be identified by the existing geometric scalar method is solved, and dual evaluation on the morphology and compactness of the graphite particles is realized.

The invention relates to the technical field of metal casting and powder metallurgy, in particular to a pressure self-adaption adjusting method and system for multi-material forging and pressing, and the method comprises the steps that 1, forging and pressing equipment and a parameter collecting system are initialized; 2, multi-parameter data in the forging and pressing process are collected in real time; 3, calculating the dynamic deformation resistance of the material based on the real-time parameters; step 4, generating a self-adaptive pressure regulation value according to the dynamic deformation resistance; 5, controlling a pressure executing mechanism to output a target pressure value; and 6, the forging and pressing process is continuously monitored and terminated, the step 2 to the step 5 are repeated until the displacement of the die reaches a preset forging and pressing completion position, the central processing unit sends out a termination signal, the pressure execution mechanism gradually unloads pressure to complete the forging and pressing process, and all parameters and adjustment records are stored for quality analysis. Through accurate pressure control and a closed-loop feedback mechanism, defects caused by too high or too low pressure are avoided, the rejection rate is remarkably reduced, and the qualified rate of products is increased.

The invention relates to a preparation method of a high-hardness high-strength free-cutting platinum-iridium alloy bar and the platinum-iridium alloy bar, the purity of raw materials is higher than 99.95%, and the platinum-iridium alloy bar comprises 9.5-10.5 wt% of iridium and the balance of platinum and inevitable impurities; the preparation method comprises the following steps: step 1, smelting and casting; the temperature of the alloy casting rod is increased to be higher than 1100 DEG C in a segmented mode, heat preservation is conducted for 100 min or above, at least three stages of forging dies are adopted for hole shrinkage hot forging, and the hole shrinkage proportion between the forging dies at all stages is 8%-25%; and thirdly, cold machining is conducted, the non-sharpening platinum-iridium alloy bar with the diameter ranging from 0.6 mm to 6.0 mm is obtained, the hardness of the platinum-iridium alloy bar is 180 HV or above, and the tensile strength of the platinum-iridium alloy bar is 550 MPa or above. Through the processes of high-frequency smelting, preheating casting, hole shrinkage hot forging and the like, bar forming and internal structure and surface quality regulation and control are considered, and the high-hardness and high-strength non-cutting platinum iridium alloy bar product is directly obtained.

The invention belongs to the field of wet electronic chemical purification, and particularly relates to a membrane chromatography filter membrane for removing charged ions in liquid and a preparation method thereof.The preparation method comprises the following steps that S1, membrane casting liquid is prepared, specifically, a positive electricity layer membrane casting liquid, a neutral layer membrane casting liquid and a negative electricity layer membrane casting liquid are prepared; s2, sequentially extruding the positive electricity layer membrane casting solution, the neutral layer membrane casting solution and the negative electricity layer membrane casting solution by using a three-layer die head, and coating on a polyester film; s3, exposing under the conditions of set temperature, humidity and air velocity, so that the casting membrane solution is subjected to preliminary phase splitting; s4, immersing the coated film in a pure water coagulating bath to complete phase splitting and curing; and S5, rinsing, drying and rolling to obtain the membrane chromatography filter membrane. By designing a special three-layer composite structure of'positive electricity layer-neutral layer-negative electricity layer ', the filter membrane can simultaneously adsorb anions and cations in a solution in a single filtering process, the limitation that a traditional single charge membrane can only remove one kind of ions is solved, and the purification efficiency is improved.

The invention relates to the technical field of casting machining feeding equipment, and discloses an electric furnace automatic feeding device for casting machining, which comprises a lower bottom plate, an automatic feeding mechanism and an anti-blocking vibration mechanism are respectively arranged above the lower bottom plate, the automatic feeding mechanism comprises a feeding bin, the feeding bin is arranged above the lower bottom plate, and the anti-blocking vibration mechanism is arranged above the feeding bin. A mounting frame is fixedly connected to the left side face of the feeding bin, a conveying motor is fixedly connected to the inner wall of the mounting frame, and a rotating rod is fixedly connected to the output end of the conveying motor. According to the automatic feeding device of the electric furnace for casting machining, the automatic feeding mechanism is arranged, raw materials for casting machining of the electric furnace for casting machining are conveniently stored through the feeding bin, a conveying motor drives a rotating rod to drive a spiral blade to rotate in the feeding bin, and the raw materials in the feeding bin are conveniently conveyed; the extension length can be adjusted according to the height of an electric furnace mouth and the raw material accumulation condition, safety accidents such as scalding and raw material falling and crushing are avoided, and the effect of improving the feeding efficiency is achieved.

The invention provides corrosion-fatigue-resistant ultrahigh-strength maritime work steel and a preparation method thereof, and relates to the technical field of maritime work steel manufacturing. The maritime work steel comprises the following components in percentage by mass: 0.04 to 0.07 percent of C, 0.20 to 0.26 percent of Si, 1.45 to 1.60 percent of Mn, less than or equal to 0.01 percent of P, less than or equal to 0.015 percent of S, 1.44 to 1.52 percent of Cr, 1.44 to 1.52 percent of Ni, 0.88 to 0.96 percent of Cu, 0.08 to 0.12 percent of Nb, 0.08 to 0.12 percent of Sb and the balance of Fe and inevitable impurities. The corrosion-fatigue-resistant ultrahigh-strength maritime work steel is prepared through raw material smelting and casting, austenitizing heat treatment, multi-pass hot rolling and cooling and temperature control. The corrosion resistance, the fatigue resistance and the corrosion fatigue resistance of the ultrahigh-strength maritime work steel are remarkably improved while the mechanical property of the ultrahigh-strength maritime work steel is improved, and the ultrahigh-strength maritime work steel has great significance in guaranteeing safe and stable operation of ocean engineering.

The invention relates to the technical field of water turbine blade manufacturing, and discloses a production system and method for an electroslag smelting casting three-dimensional variable curved surface water turbine blade, and the system comprises a three-dimensional variable curved surface blade crystallizer for electroslag smelting casting, an electroslag smelting casting electrode, a flexible electrode conductive device and a flexible electrode driving device; the three-dimensional variable-curved-surface water turbine blade crystallizer for electroslag casting is formed by combining a plurality of crystallizer blocks, and a blade crystallizer cavity of the three-dimensional variable-curved-surface water turbine blade crystallizer follows the shape of a water turbine blade; the electroslag casting electrode comprises a guide electrode and a flexible electrode, a guide channel is arranged in the guide electrode, and the guide electrode is located in a blade crystallizer cavity and fixed relative to a crystallizer. The shape of the produced electroslag smelting casting blade blank is completely matched with the shape of the three-dimensional curved surface of the water turbine blade, and the electroslag smelting casting three-dimensional curved surface water turbine blade is directly formed and manufactured through one-time smelting casting. And the produced water turbine blade blank is short in manufacturing process, small in machining allowance, high in material utilization rate, low in manufacturing cost and excellent in internal quality.

The invention discloses a high-toughness corrosion-resistant semi-solid injection molding magnesium alloy and a preparation method thereof, and belongs to the technical field of metal materials. The magnesium alloy comprises the following chemical components in percentage by weight: 8.6 to 11 percent of aluminum, 0.5 to 1 percent of zinc, 0.05 to 0.4 percent of manganese, 0.05 to 0.2 percent of calcium, 0.6 to 2 percent of rare earth element RE and the balance of magnesium and inevitable impurities. The preparation method of the alloy comprises the following steps: (1) adding raw materials according to the component proportion, smelting into magnesium alloy melt, pouring into a mold, and molding to obtain a magnesium alloy ingot; (2) cutting the cast ingot into magnesium alloy semi-solid blank particles; (3) performing injection molding to obtain a molded part; (4) solid solution heat treatment; and (5) performing two-stage aging heat treatment. The magnesium alloy has high toughness and corrosion resistance, and is suitable for semi-solid injection molding. The forming process can achieve near-net forming of complex components, and castings are few in defect, compact in structure and wide in application prospect.

The invention discloses a digital driving method for a full-flow manufacturing process of a high-precision shell casting, which comprises a casting stage, a heat treatment stage and a machining stage, and is characterized in that digital data streams are established among three process links of the casting stage, the heat treatment stage and the machining stage; and the output data of the previous process is used as a process adjustment basis of the subsequent process, so that a datamation-driven closed-loop manufacturing system is formed. The invention provides a set of effective systematic solution for high-precision production of thin-wall shell castings.

The utility model provides a core pulling mechanism. The core pulling mechanism comprises a support, a hydraulic cylinder, a guide assembly and a core pulling block. One end of the support is connected with the outer wall of the die-casting die, and the hydraulic cylinder is arranged at the other end of the support. The guide assembly comprises a sliding block, and one end of the sliding block is connected with the power output end of the hydraulic cylinder. The core-pulling block is connected with the power output end of the hydraulic cylinder through the sliding block, one end of the core-pulling block is connected with the sliding block, the other end of the core-pulling block is inserted into the die-casting die, an abutting-pressing protruding block is formed at the end, away from the sliding block, of the core-pulling block, the abutting-pressing protruding block extends into the cavity, and the abutting-pressing protruding block is used for pressing a casting in the cavity. The pressing convex block exceeding the product position is arranged at the front end of the core-pulling block, so that the problem that a casting adheres to a fixed mold can be solved without changing the mold design.

The invention relates to the technical field of metal material forming, in particular to an automobile chassis suspension bracket semi-solid forming process which comprises the steps of smelting and refining, multi-physics field coupling pulping, asymmetric mold design, multi-section thixotropic injection, collaborative pressurization and pressure maintaining and aftertreatment. High-quality semi-solid slurry is obtained through mechanical-electromagnetic-pulse ultrasonic composite slurry preparation; synchronous filling of a complex structure is achieved through the asymmetric divergent fan-shaped pouring gate; the technology systematically solves the three bottlenecks of unstable slurry, many filling defects and difficult feeding of a key area in the manufacturing of the high-performance suspension bracket, the obtained part is compact in structure and excellent in mechanical property, the fatigue life of the obtained part is remarkably superior to that of a traditional casting and is comparable with that of a forged piece, and the production cost is reduced. And meanwhile, the near-net forming cost advantage is achieved.

The utility model discloses a burr water gap removing device for hub casting. Belongs to the technical field of hub casting. According to the technical key points, the device comprises a machine table arranged between two sections of roller type conveyors, a lifting assembly is arranged on the roller type conveyor on one side of the feeding end of the machine table, and a vibration deburring assembly is arranged on the lifting assembly; a rotating platform is arranged on the machine table, and a one-way material pushing assembly is arranged above the roller type conveyor located on the side, in the material feeding direction, of the machine table. A positioning and clamping assembly matched with a hub is arranged on the side, perpendicular to the conveying direction of the roller conveyor, of the machine table, and a movable grinding wheel assembly is arranged on the side, opposite to the positioning and clamping assembly, of the machine table. A positioning cylinder matched with the hub is arranged above the rotating platform; the utility model aims to provide the hub casting burr water gap removing device which is simple in structure and convenient to polish; the device is used for removing burrs and water gaps after wheel hub casting.

The invention provides an ingredient processing method, system and equipment for mineral castings, and relates to the technical field of casting processing, the method comprises the following steps: calling an ingredient list of the mineral castings, and performing graded activation on mineral aggregate parameters to obtain activated aggregate parameters; performing first-stage mixing according to a preset proportion to obtain resin premix data, and adding the activated aggregate parameters into the resin premix data in batches to perform second-stage gradient mixing; the uniform mineral casting slurry data are injected into a mold for double-step gradient treatment, an obtained gradient treatment result is subjected to aging online monitoring, process tracing is carried out according to a monitoring result, and process backtracking parameters are generated; and the processing technology is dynamically adjusted according to the technology backtracking parameters to intelligently optimize ingredient processing, and the parameters of the mineral casting finished product are constructed. The technical problem that in the prior art, the machining uniformity of the mineral casting is poor can be solved, and the technical effect of improving the machining uniformity of the mineral casting is achieved.

The invention discloses a precise aluminum alloy casting parameter intelligent decision-making system and method based on digital twinning, and relates to the technical field of intelligent manufacturing and casting process optimization. The method comprises the steps of initializing a multi-physics field coupling digital twin model, collecting and preprocessing data in real time, dynamically comparing and correcting the model, constructing a multi-objective function for optimization, transmitting optimized process parameters to an actuator, archiving whole-process data and updating a knowledge base. The system comprises a multi-physics field coupling digital twinning construction module, a real-time data perception and acquisition module, a process parameter intelligent decision module, a closed-loop control and execution module and a data management and knowledge base module. By the adoption of the technical scheme, the nonlinear interaction effect in the casting process can be accurately represented, the consistency of a virtual model and a physical entity is remarkably improved, the process adjustment response time is shortened, the comprehensive yield of castings is increased, and the self-learning and generalization ability is achieved.

A casting device for manufacturing an aluminum cylinder of a shock absorber of a motorcycle is characterized in that a casting main box and an electric control cabinet are arranged on a base, a motor in the casting main box is connected with a rotating shaft, the rotating shaft is connected with a lower die seat, a lower casting die and a heat conducting plate are arranged in the lower die seat, and the heat conducting plate is attached to the lower casting die; a hydraulic cylinder fixed to the top end in the casting main body box is connected with a fixing block, the fixing block is fixed to the middle of the top end of an upper die base, a heat dissipation water plate and an upper casting die are arranged in the upper die base, the heat dissipation water plate is connected with a cooling water circulation device, and the upper casting die is connected with a casting liquid inlet device. According to the casting device, two aluminum cylinders can be cast at the same time, the heat dissipation modes of water cooling and air cooling are added, and the production efficiency of enterprises is improved.

The utility model belongs to the technical field of wear-resisting ball casting, and particularly relates to an automatic pouring device for wear-resisting ball casting, which comprises a base and a mounting rack, the top of the base is fixedly connected with a mounting seat, the top of the mounting seat is fixedly provided with a mold for wear-resisting ball casting, and a moving mechanism is arranged between the mounting rack and the base. The top of the mounting frame is fixedly connected with a supporting plate, a quantitative pouring mechanism is arranged between the mounting frame and the supporting plate, a lifting mechanism is arranged below the quantitative pouring mechanism, and the front side of the mounting base is fixedly connected with a control panel. The quantitative pouring device is reasonable in structural design, hot molten iron can be quantitatively pressed into the mold through the quantitative pouring mechanism, the situation that the quality of wear-resisting ball casting is affected due to too much or too little pouring is avoided, the pouring head can be conveniently moved downwards to be inserted into a feeding port of the mold through the lifting mechanism, and the situation that the hot molten iron is spilled and wasted due to the fact that the pouring head is far away from the mold is avoided.

The utility model discloses a metal casting clamping device with an overturning function. The metal casting clamping device comprises a base, and an overturning mechanism and a supporting frame used for supporting a machined metal casting are arranged at the top end of the base. The turnover mechanism is provided with two blowing assemblies used for cleaning chippings at the top end of the supporting frame, the flowing directions of gas blown out by the two blowing assemblies are opposite, the turnover mechanism is provided with two piston assemblies used for injecting gas into the two blowing assemblies correspondingly, and the piston assemblies are arranged on the turnover mechanism and used for pushing the two piston assemblies to the top end of the supporting frame in the direction opposite to the direction opposite to the direction opposite to the direction opposite to the direction opposite to the direction opposite to the direction opposite to the direction opposite to the direction opposite to the direction opposite to the direction opposite to the direction opposite to the direction opposite to the direction. And the turnover mechanism is provided with a first moving assembly and a second moving assembly which are used for driving the two piston assemblies to do piston motion correspondingly. According to the metal casting machining device, a fixedly clamped metal casting can be overturned, machining operation on different outer walls of the metal casting is facilitated, and chippings falling on the top end of the supporting frame during machining of the metal casting can be automatically cleaned.

The invention relates to a magnesium alloy semi-solid injection molding system and a magnesium alloy semi-solid injection molding method. The magnesium alloy semi-solid injection molding system comprises an injection unit, a mold, a cooling system, a detection unit and a control unit. The mold is provided with a plurality of cooling subareas, and the cooling subareas are divided according to the wall thickness of a casting corresponding to a mold cavity. The cooling system comprises a plurality of cooling channels and a plurality of flow adjusting pieces, the cooling channels are arranged in the mold, and the cooling channels and the flow adjusting pieces are arranged in a one-to-one correspondence mode. The detection unit is used for obtaining the solid fraction of the magnesium alloy slurry in the cavity of the mold in real time. The control unit is in communication connection with the detection unit and the flow adjusting part, and the control unit and the cooling system adjust the cooling rate of each cooling channel according to the control instruction. The state of the slurry can be sensed in real time, cooling behaviors of all areas of the mold can be dynamically and accurately regulated according to the state, and the production quality of magnesium alloy semi-solid castings is improved.

The invention discloses a preparation method of a corrosion-resistant and impact-resistant high manganese steel wear-resistant lining plate, and relates to the technical field of wear-resistant materials, the preparation method comprises the following steps: S1, weighing raw materials according to the mass percentage; s2, raw material smelting; s3, rare earth purification is conducted, specifically, rare earth elements are added into the molten-state raw materials, and the molten-state raw materials are subjected to deoxidation and desulfurization treatment; s4, casting molding is conducted, the temperature from the bottom end of a casting to a riser is controlled to be decreased stage by stage, and directional solidification is achieved; s5, heat treatment is conducted, specifically, the casting is subjected to solution treatment and then subjected to water quenching to the room temperature; and S6, surface treatment is conducted, specifically, shot blasting treatment is adopted, surface oxide skin is removed, and a surface compressive stress layer is formed. The strength, hardness and high toughness of the high-manganese steel are guaranteed by controlling the content of carbon and manganese, meanwhile, single-phase austenite is obtained through solution treatment, the hardness is improved through carbon atom segregation through low-temperature aging, and the strength, hardness, toughness and corrosion resistance of the high-manganese steel lining plate are improved.

The invention discloses a motor base casting forming device and method, belongs to the technical field of motor manufacturing, and is suitable for production of motor bases for new energy automobiles. The device comprises an evanescent mode casting forming unit and a casting post-processing unit, the post-processing unit integrates a sand recycling conveying belt, a bearing buffering mechanism, a pre-cooling system, a driving assembly, a guiding-out piece and a transferring sand removing mechanism, the core is bearing pieces which are arranged in a staggered mode and provided with elastic buffering and built-in water ways, and the working states are switched in cooperation with air cylinder driving. The method is automatically achieved through the whole process of casting forming preparation, buffering receiving, sand-iron separation, precooling discharging, guiding-out and transferring and online sand removal. Through double protection of elastic buffering and water-cooling pre-cooling, impact damage and uneven cooling of castings are avoided, sand and iron are separated synchronously, the recovery rate is high, the automation degree is high, the forming precision and production efficiency of the motor base are effectively improved, and the requirements for batch production and high precision of automobile manufacturing are met.

The invention discloses a method for preparing fine-grain copper and copper alloy through pulsed magnetic field and rare earth adding composite regulation and control, and belongs to the technical field of copper and copper alloy material preparation. Graphite mold casting is adopted in the method, and the method comprises the specific steps that electrolytic copper with the purity larger than or equal to 99.95 wt% or a copper alloy with specific components is prepared as a matrix raw material; after smelting, adding pure lanthanum blocks and uniformly stirring; after the melt is poured into a preheating mold, a pulsed magnetic field is applied immediately for treatment, and the parameters of the magnetic field are as follows: the pulse voltage is 180-250 V, the frequency is 4.5-6.5 Hz, and the duration time is 15-20 minutes. According to the method, the heterogeneous nucleation effect of rare earth lanthanum is combined with the melt forced convection and dendritic crystal crushing effect caused by the pulsed magnetic field to synergistically refine a solidification structure and promote columnar crystal orientation equiaxed crystal transformation, so that a cast ingot with fine crystal grains is directly obtained in the casting stage, and the possibility is provided for simplifying the subsequent processing technology.

The invention relates to the technical field of vehicle bodies, in particular to a collision force transmission inclined strut structure. The hinge column inner plates are arranged at the two ends of the front-end large casting, one end of the inclined strut structure body is installed on the front-end large casting, the other end of the inclined strut structure body is installed on the hinge column inner plates, and the inclined strut structure body, the front-end large casting and the hinge column inner plates form a triangular stable structure. The section of the inclined strut structure body is of an M-shaped structure. The inclined strut structure has the beneficial effects that according to the technical scheme, the inclined strut structure body with the special structure is designed, one end of the inclined strut structure body is installed on the front-end large casting, and the other end of the inclined strut structure body is installed on the hinge column inner plate, so that the inclined strut structure body, the front-end large casting and the hinge column inner plate form a triangular stable structure; the inclined strut structure can effectively reduce the impact force of head-on collision on a passenger compartment, so that the safety performance of the cockpit is improved.

The utility model discloses a split type mold for vacuum centrifugal casting, which comprises a lower mold body and is characterized in that the lower mold body comprises an outer mold part and an inner mold part which are arranged in a split type, and the outer mold part is movably mounted on the inner mold part; the inner die piece comprises a lower die base and an inner die installed on the lower die base. According to the utility model, the lower mold body is arranged in a split manner and is divided into the outer mold piece and the inner mold piece, so that when a rotor iron core and the inner mold body are demolded, multi-time demolding and single-time and single-side demolding can be carried out, the thrust during demolding is reduced, and the demolding efficiency is improved. And meanwhile, galling on the surface of the rotor iron core due to the fact that inner and outer demolding is completed at a time by strong force is avoided.

The invention relates to the technical field of PE lamination production control, and discloses a distributed control system for a high-speed PE lamination production line. A base material state monitoring module of the system collects surface tension parameters and thickness distribution data of a base material in real time, and a dynamic base material state matrix is generated in combination with the operation speed of the base material; the temperature field coordination module is used for matching a preset melt temperature gradient curve according to thickness distribution data in the dynamic base material state matrix and generating a partition temperature regulation and control instruction set; the extrusion pressure balance module analyzes the pressure fluctuation historical record of each extrusion section based on the partition temperature regulation and control instruction set, calculates the pressure compensation amount of adjacent sections and generates a pressure balance parameter table; the film layer fusion control module receives the compensation amount data, adjusts the rotating speed difference of the double-screw extruder and the opening degree parameter of a die head in combination with the real-time melt casting speed, and outputs a film layer fusion quality index; and the distributed execution module decomposes the film fusion quality index into independent control instructions and synchronously issues the independent control instructions to each execution unit.