10205 results about "Casting" patented technology

The invention discloses a casting surface treatment quality evaluation method and system, and relates to the technical field of intelligent manufacturing and quality control, and the method comprises the steps: carrying out the multi-modal data collection of a casting, and carrying out the preprocessing; analyzing the preprocessed data, and constructing a comprehensive quality evaluation data set; a quality evaluation model is constructed, abnormal conditions in surface processing are identified, and a quality evaluation result is generated; performing quality classification on the casting according to a quality evaluation result, generating an evaluation report, and providing quality state judgment and related optimization suggestions; the casting surface treatment process is adjusted and optimized, the overall manufacturing quality is improved, and continuous improvement of quality evaluation is achieved. According to the method, the detection precision of the casting surface treatment quality and the process optimization capability are improved. By adopting data-driven closed-loop control, quality abnormity can be accurately identified, optimization suggestions can be provided, intelligentization, stability improvement and long-term quality improvement of the manufacturing process are realized, the defect rate is effectively reduced, and the manufacturing consistency is improved.

The invention relates to the technical field of material fatigue performance testing, in particular to a fatigue acceleration detection method and system for a high-fatigue-resistance cast wheel, and the method comprises the steps: generating a dynamic load spectrum containing a multi-axis combined load according to the actual operation condition of a target cast wheel; applying a dynamic load spectrum to the target casting wheel to perform an acceleration test, and monitoring dynamic strain responses on the surface and inside of the target casting wheel in real time based on the distributed sensing array; establishing a damage accumulation calculation model by taking a loading parameter of the dynamic load spectrum as an additional correlation condition, and calculating an equivalent fatigue damage accumulation value based on the dynamic strain response; when the equivalent fatigue damage accumulated value reaches a preset damage threshold value, it is judged that the target cast wheel reaches the fatigue life end point, and the damage evolution rule in the acceleration test is kept consistent with the damage mechanism of the actual operation working condition. According to the invention, the problems of multi-axis load simulation distortion, incomplete damage monitoring, low service life prediction precision and the like in traditional fatigue detection are effectively solved.

The invention discloses a casting surface treatment defect detection and quality evaluation method and system, and relates to the technical field of casting quality evaluation, and the method comprises the steps: collecting the surface data of a to-be-detected casting, and carrying out the data preprocessing, and obtaining a standardized input data set and a standardized data subset; calling a corresponding analysis sub-model for each subset, outputting quality features and confidence coefficients, and summarizing the quality features and the confidence coefficients into a sub-source result; environment state information is acquired to determine sub-model weights, and weighted fusion is carried out on sub-source results to obtain an evaluation result and an overall confidence coefficient; calculating space / feature / time consistency and judging according to a combination rule; when a re-checking condition is met, obtaining a re-checking label backflow updating data set, and training an updating model and parameters; and dynamically adjusting the threshold value and the weight value according to the performance index for subsequent evaluation. According to the method, multi-source data and environment information can be fused, weight self-adaption and closed-loop updating are parallel, accuracy and stability are improved, misjudgment and missed judgment are reduced, and complex working condition adaptability and long-term reliability are enhanced.

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 embodiment of the invention relates to the technical field of visual inspection, and discloses a surface defect detection method based on machine vision, which comprises the following steps: performing parameter analysis on an image quality parameter corresponding to a casting surface image to determine an image accuracy index of the casting surface image; if the image precision index of the casting surface image is not less than a precision index threshold; if the area characteristic parameters are smaller than a preset area standard characteristic threshold value, defect detection is conducted on the corresponding casting area image, and if the area characteristic parameters are not smaller than the preset area standard characteristic threshold value, the corresponding casting area image is marked as a to-be-detected defect image; and comparing the regional defect parameter with a surface defect standard index preset in a casting detection library. According to the surface defect detection method based on machine vision in the embodiment of the invention, the casting surface image is divided into a plurality of areas, and feature extraction is performed on each area, so that the surface condition of the casting can be analyzed more meticulously, and the detection accuracy is improved.

The invention relates to the technical field of production monitoring, in particular to an aluminum alloy casting integrated frame forming process monitoring system and method based on multi-source fusion, and the method comprises the following steps: collecting melt mold filling vibration data, mold interface temperature gradient distribution and pressure waveform data, and constructing a time-space associated multi-physical field original data set; respectively extracting a characteristic frequency band energy value, a temperature change rate extreme value and a pressure pulsation amplitude value in a mold filling stage, and generating a three-dimensional characteristic vector group; adaptive fusion decision making: inputting the three-dimensional feature vector group into a pre-trained space-time convolutional network, and outputting a fusion decision index representing the microdefect formation tendency; carrying out feedforward-feedback composite regulation and control; and online self-correction is carried out. According to the method, the temperature, the pressure and the mold filling speed in the casting process are optimized, defects in the casting are reduced, and particularly in the aspect of temperature control, it is ensured that the temperature in the casting process is kept within an ideal range, so that the casting quality and the production efficiency are improved.

The invention discloses automatic centrifugal casting equipment and a casting process, and relates to the technical field of metal casting equipment, the automatic centrifugal casting equipment comprises a centrifugal machine, a mold, an automatic mold loading and unloading device, a casting device and a control device, the centrifugal machine is a horizontal centrifugal machine, and the mold is composed of an outer mold and an inner mold; the automatic mold loading and unloading device comprises a mold pushing device, an inner mold loading and unloading device and an inner mold separating device; a clamping jaw of the inner mold assembling and disassembling device is connected with the inner mold through an inner mold lock, the inner mold assembling and disassembling device automatically achieves unlocking and locking of the inner mold lock, the inner mold and the outer mold are automatically locked or unlocked, the inner mold assembling and disassembling device is separated from the inner mold in the casting process, and the situation that the working performance of the centrifugal machine is affected by external force is avoided; the device has the advantages of high production efficiency, reliable work, long service life and the like.

The invention relates to the technical field of metal processing and casting, and particularly discloses a residual stress control system and method based on metal casting molding, and the system collects simulation process parameters of a metal casting molding process and basic parameters of a to-be-cast assembly, and analyzes a residual stress risk assessment value of the metal casting molding process through big data. Potential casting problems can be recognized and solved from the source, powerful data support is provided for follow-up casting optimization work, the actual effect brought by process optimization is quantified by evaluating the process optimization index of the metal casting forming process after the process optimization set of the metal casting forming process is executed, and the process optimization efficiency is improved. A basis is provided for subsequent adjustment and improvement, the technology optimization set of the metal casting forming process is adjusted, the technology adjustment index of the metal casting forming process is judged, and finally adjustment feedback is conducted on intelligent control over the residual stress of the metal casting forming process, so that the metal casting forming process meets the actual casting requirement.

The invention discloses a metal casting process quality monitoring system for intelligent manufacturing and a method thereof, and relates to the technical field of metal casting quality monitoring. According to the system, a Bayesian method and multi-model hypothesis testing are used for monitoring the casting process in real time, whether deviation or abnormity exists or not is recognized, and corresponding adjustment is made, so that it is ensured that the quality of a casting always meets the preset standard; performing parallel processing through four pre-training models, performing feature extraction and fusion on the sensor data after standardization processing, and performing fine adjustment on the pre-training models through transfer learning; and performing classification prediction or regression prediction on the fused feature vectors based on an integration method of a multi-layer perceptron model, and evaluating the uncertainty of a prediction result in combination with an uncertainty quantification method. By means of the system and method, various physical parameters in the casting process can be monitored in real time, accurate prediction can be achieved, problems can be found in time, waste in production is reduced, and the overall quality of castings is improved.

The invention discloses a continuous rigid frame bridge construction monitoring method which comprises the following steps: before cantilever casting construction, arranging linear monitoring points along the longitudinal axis direction of a bridge according to the spacing of 8-12 meters, and respectively arranging stress monitoring points on a top plate and a bottom plate of the root section of each section; synchronously acquiring three-dimensional coordinate data of the linear monitoring points and real-time strain data of the stress monitoring points in the process of pouring each section in a cantilever manner; the collected linear data and stress data are input into a finite element model for collaborative analysis, and when a linear deviation value exceeds + / -5% of a designed pre-camber value and the deviation between a stress measured value and a theoretical calculation value exceeds + / -8%, an adjustment instruction is automatically generated; according to the adjusting instruction, the elevation of the front fulcrum of the hanging basket is adjusted through the hydraulic jack during construction of the next section; after initial setting of the adjusted segment concrete, linear data and stress data are collected, and the actually measured data and a finite element model prediction value are compared and verified. The method can help to guarantee the safety and durability of the continuous rigid frame bridge.

Provided in the present invention are a prefabricated room module, a building and a construction method. The prefabricated room module comprises a shear wall body and a top plate body, wherein the shear wall body has a wall cavity configured for cast-in-place concrete, and a shear wall is formed after concrete is cast in the wall cavity; the top plate body has a casting area for cast-in-place concrete, and a top plate is formed after concrete is cast in the casting area; and the shear wall body is fixedly connected to the top plate body. According to the prefabricated room module, the building and the construction method provided by the embodiments of the present invention, prefabricated portions of a shear wall and a top plate are extracted in a modular manner and are assembled in a factory, thereby forming a standard module self-stressed system; thus, only hoisting and concrete casting works on the module are required at a construction site, and the hoisting of all or most of the small components, the erection operations of scaffolds and construction supports, and a large amount of welding and bolting operations can be avoided.

The invention relates to the technical field of bridge engineering construction, in particular to a bridge deck concrete flatness detection and correction method, which comprises the following steps: synchronously acquiring bridge deck point cloud, elevation and crack data through a three-dimensional laser scanner, a laser profiler and an ultrasonic sensor, and fusing to generate a three-dimensional digital model; defects such as local protrusions and wave deformation are recognized based on an intelligent analysis algorithm, causes are analyzed, and correction process parameters such as milling, cladding, grouting or ultrathin layer pouring are generated in a targeted mode; operation is executed through equipment such as a finish milling machine, closed-loop control is realized by combining real-time monitoring of a laser profiler, and finally, a traceable digital file is formed through laser detection, inspection and acceptance of an unmanned aerial vehicle and data archiving. By means of the method, the pass percent of the flatness of the bridge floor can be increased to 94% or above, the maximum height difference is controlled within 3 mm, the maintenance period of the bridge is prolonged, and the maintenance cost is reduced.

The invention discloses a thermomechanical treatment method for an Al-Mg-Si alloy rolled plate, and relates to the technical field of aluminum alloys, and the thermomechanical treatment method comprises the following working procedures of fusion casting, head and tail cutting, surface milling, homogenizing heat treatment, temperature-controlled rolling, solid solution quenching and pre-aging treatment, and after a cast ingot obtained by fusion casting of an aluminum alloy raw material is subjected to head and tail cutting and surface milling, the Al-Mg-Si alloy rolled plate is obtained; and after homogenization heat treatment is conducted, temperature control rolling is directly conducted through waste heat, quenching and pre-aging treatment are conducted after temperature control rolling is completed, and the alloy rolled plate is obtained. According to the method, the purposes of saving energy, simplifying the process flow and improving the production efficiency are achieved, the microstructure of a cast ingot can be regulated and controlled, crystal grains are refined, wrong distribution is improved, the strength of a rolled plate is further improved, the problem that mechanical properties are unstable is solved, and the generation of a rib line is avoided.

The utility model discloses an aviation aluminum alloy pipe type casting polishing device which comprises a base, two sets of supporting seats are arranged on the base, two sets of first electric push rods are symmetrically arranged on the two sets of supporting seats through supporting grooves, supporting roller sets are arranged at the output ends of the first electric push rods, and a second electric push rod is arranged above the base through a mounting frame. A driving roller set is arranged at the bottom end of the second electric push rod, an external grinding block is arranged on one side of the middle of the supporting base and the driving roller set, a movable driving structure is arranged in cooperation with the external grinding block, and a mounting base is arranged on one side of the base through a third electric push rod. A first motor, a fourth electric push rod and an internal grinding roller which are sequentially connected are arranged on the mounting base, flexible supporting and rotating driving of the aviation aluminum alloy pipe type casting during grinding can be achieved, meanwhile, synchronous grinding of the interior and the outer wall of the aviation aluminum alloy pipe type casting can be achieved synchronously, and the machining efficiency is improved.

The invention belongs to the technical field of casting tools, and particularly discloses a magnesium-aluminum alloy large casting drilling tool which comprises a fixing frame and a positioning platform, and a lifting frame is arranged on one side of the fixing frame; a driven gear is rotationally installed in the positioning platform, clamping units are arranged on the two sides of the upper portion of the positioning platform, a lower pressing rod is connected to the lower portion of the lifting frame, a sleeve is arranged between the fixing frame and the positioning platform, a driving gear meshed with the driven gear is rotationally installed on the sleeve, and clamping units are arranged on the two sides of the upper portion of the positioning platform. A driving unit is arranged on the rear side of the positioning platform; the acting force of ascending or descending of the pressing rod is used as driving force, the driving unit drives the clamping unit to limit the position of the to-be-machined workpiece and then conduct drilling, after drilling is completed, the pressing rod ascends, and the to-be-machined workpiece rotates through cooperation between a driving gear and a driven gear; therefore, through holes in different positions, staggered up and down, of the workpiece to be machined are drilled.

The numerical control machine tool base casting machining equipment comprises a forming mold and a casting ladle mechanism, and the forming mold comprises a mold body, a buckling mechanism, an exhaust mechanism and an air extraction mechanism; the casting ladle mechanism comprises a hoisting mechanism, a casting ladle body and a casting ladle driving mechanism. On the basis that casting machining is not affected, gas generated by thermal decomposition of organic matter in coated sand can be effectively and efficiently exhausted, and therefore the defects of air holes, pits and the like of castings are prevented; and the controllability of casting construction can be improved, so that the safety risk of casting construction is reduced.

The invention discloses a casting device for an automobile engine water pump shell, and relates to the technical field of casting, the casting device comprises a supporting assembly, a supply assembly, a die-casting assembly, a die assembly and a cooling assembly, the supporting assembly comprises a bottom frame, the top of the bottom frame is fixedly connected with a supporting plate, and the top of the supporting plate is fixedly connected with a sliding rail. According to the casting machining device, when the water pump shell of the automobile engine is cast and machined, the multiple sets of molds are arranged above the rotating disc, through cooperative operation of a first motor, a smelting furnace, a second motor, a hydraulic cylinder, a first fan and a second fan, sequential machining of the multiple sets of molds can be achieved, and the smelting furnace can continuously work; and a single smelting furnace can be matched with a plurality of sets of molds for casting at the fixed position at the same time, it is ensured that molten aluminum is stably supplied in the automatic operation state, the safety risk existing when the molten aluminum is manually carried is effectively avoided, and the safety of casting machining of the engine water pump shell is improved.

The invention relates to the technical field of hydrogen production by alkaline electrolyzed water, in particular to an anti-stripping alkaline electrolyzed water diaphragm casting solution, a diaphragm, a preparation method and application. The anti-stripping alkaline electrolyzed water diaphragm casting solution is prepared from the necessary solvent, the polydimethylsiloxane material, the polysulfone material, the inorganic nano-particles, the pore-forming agent, the cross-linking agent and the catalyst, and the polydimethylsiloxane material, the cross-linking agent and the catalyst act together, so that the enveloping of the inorganic nano-particles can be improved; the mechanical property of the membrane casting liquid on the membrane supporting layer is improved, and the anti-stripping effect is achieved. The diaphragm prepared by adopting the alkaline electrolyzed water diaphragm casting solution shows relatively low sheet resistance and stripping resistance, is good in air tightness, and is suitable for preparing the diaphragm of alkaline electrolyzed water hydrogen production equipment, so that the effects of maintaining free movement of ions in an electrolytic bath and blocking mixing of hydrogen and oxygen are achieved.

The invention aims to disclose a preparation process of a high-wettability aluminum alloy and a high-strength and high-conductivity copper-aluminum composite material, and relates to the technical field of metal composite materials, and the high-wettability aluminum alloy and high-strength and high-conductivity copper-aluminum composite material comprises the following components in percentage by weight: 1.2%-2.1% of Si, 0.5%-1.0% of Fe, 0.03%-0.1% of Cu, 0.05%-0.07% of Mn, 0.05%-0.08% of Mg, 0.05%-0.1% of Zn, 0.05%-0.1% of Zr, 0.02%-0.05% of Ti, 20 ppm to 50 ppm of rare earth, and the balance of aluminum and inevitable impurities. Comprising the following steps that high-wettability aluminum alloy is cast and rolled into a semi-liquid alloy aluminum strip, and the thickness of the semi-liquid alloy aluminum strip ranges from 5 mm to 7 mm; casting and rolling to form a semi-solid copper strip, wherein the thickness of the semi-solid copper strip is 0.8-2mm; and the semi-liquid alloy aluminum strip and the semi-solid copper strip are cast-rolled and compounded into a composite metal strip of 6.0 mm-8. 5mm. The high-wettability aluminum alloy has the beneficial effects that the high-wettability aluminum alloy contains Si, Fe, Cu, Zr, Ti and rare earth, and has the characteristics of high strength, high hardness, high wettability and easiness in rolling; the semi-liquid aluminum alloy strip and the high-strength and high-conductivity semi-solid copper strip are continuously cast and rolled, and the formed composite metal strip has the characteristics of high peel strength, difficulty in layering and high conductivity.

The invention discloses a civil aero-engine casting material standard establishment and airworthiness verification method, which comprises the following steps: S1, casting material standard establishment: establishing a casting material standard first draft, and obtaining a relational expression of casting tissues, defects and mechanical properties through casting simulation production and small-batch casting production to complete casting material standard first draft revision; s2, a casting mechanical property model diagram is obtained, specifically, casting chemical components, technological parameters and the like are input into optimized casting simulation production software based on the relational expression to obtain the casting mechanical property model diagram; s3, casting simulation production evaluation: comparing a casting mechanical property model diagram with a casting stress diagram, and if the strength design requirement cannot be met, improving the process or replacing materials; on the contrary, first-batch and batch production trial production is carried out, verification is carried out on positions with weak mechanical properties and large stress, and material standard identification is passed. It is ensured that the casting meets the actual requirement, and support is provided for airworthiness verification of civil aero-engine casting materials.

The invention discloses a metal casting machining pouring device capable of preventing air hole generation, and relates to the technical field of metal casting machining, the metal casting machining pouring device comprises a base, two sets of stand columns are symmetrically installed at the top of the base, a fixing plate is fixedly installed at the tops of the two sets of stand columns, and the metal casting machining pouring device further comprises a pouring assembly arranged above the base, the rotating base is arranged on one side in the rotating base, the rotating base is hinged to one side of the top of the base, threaded rods are symmetrically connected to the upper portions of the two sides in the rotating base in a threaded mode, and one end of each threaded rod is rotationally connected with a positioning plate; according to the mold for casting the metal casting, in the casting process of the metal casting, the mold can be kept inclined in the casting process and can gradually rotate to be perpendicular to the horizontal plane in the casting process, the inclination angle of the mold is adjusted according to the type of the metal casting, the situation that the machining quality of the casting is affected after casting is completed is avoided, and practicability is improved.

The invention provides an optimization method and device for a blade casting process, equipment and a storage medium, and the method comprises the steps that process parameters of at least one process of blade casting are obtained; generating input sequence data based on the process parameters; inputting the input sequence data into a pre-trained process quality prediction model to obtain a predicted casting qualification rate and a forging defect occurrence probability output by the process quality prediction model; wherein the process quality prediction model is a transformation neural network model, and the process quality prediction model has learned in advance to obtain process parameters based on a blade casting process, and has the capability of predicting the qualification rate of castings and the occurrence probability of forging defects; and optimizing the process parameters based on the predicted qualified rate of the casting and the occurrence probability of the forging defects. According to the technical scheme, the forging qualification rate of the blade can be increased, and the development iteration frequency and period of the turbine blade casting process are reduced.

The invention relates to the technical field of automobile die casting air tightness detection, in particular to a new energy automobile die casting air tightness automatic detection device which comprises a detection mechanism arranged on a detection table, and a conveying mechanism and a coating mechanism are arranged on the front portion and the rear portion of the detection mechanism; through cooperation of the detection mechanism, the conveying mechanism and the coating mechanism, automatic discharging of fan motor shells detected to be qualified through a pressure drop method can be achieved, or leakage point detection and positioning of unqualified shells can be directly conducted, and therefore the redundant links of repeated disassembly, transfer and secondary clamping of the shells in traditional step-by-step operation are eliminated; through the cooperation of the detection mechanism, the conveying mechanism and the coating mechanism, a water immersion method detection device and an oil coating method detection device can be integrated in the same equipment, so that a corresponding detection mode is automatically matched according to the leakage data of the unqualified fan motor shell.

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 relates to the technical field of metal casting, in particular to a well lid casting rapid demolding device which comprises a casting body, a demolding assembly is arranged in an inner cavity of the casting body, a lower mold cavity is formed in the upper surface of the casting body, a hydraulic cylinder is fixedly installed on the inner wall of the casting body, and a piston rod is slidably connected to an inner cavity of the hydraulic cylinder. Automatic demolding is achieved through the demolding assembly, the demolding mechanism ejects a workpiece through flexible force, the situation that the workpiece or a mold is damaged due to ejection of the demolding mechanism with too high rigidity or manual beating or jolting demolding is prevented, meanwhile, the ejection height of the workpiece during demolding can be adjusted, and in addition, whether the workpiece is evenly stressed or not during demolding can be detected; the appearance attractiveness of the outer surface of the well lid is guaranteed, deformation is prevented, the durability and the bearing capacity of the well lid are improved, the discharging mode can be switched through the discharging assembly, quantitative discharging is adopted when casting of raw materials is about to be finished, and the proper amount of the casting raw materials is guaranteed.

The invention relates to the technical field of metal casting polishing devices, in particular to progressive metal casting segmented polishing equipment which comprises a polishing table, a clamping assembly used for clamping a metal casting is arranged at the top of the polishing table, and a supporting frame is further arranged at the top of the polishing table. A grinding assembly used for conducting all-dimensional grinding on the metal casting is arranged at the bottom of the supporting frame, a dust suction pump is matched with a dust suction pipe and a suction nozzle to work so that dust and metal dust can be guided into a separation frame, and magnetic metal dust contained in the metal dust can be attracted to a cylindrical magnet; the non-magnetic metal dust and dust fall on the filter screen, then the filter screen is continuously extruded by the extrusion block, and the filter screen is always in a vibration state under the action of the spring telescopic rod, so that the non-magnetic metal dust on the filter screen is screened out; and finally, the water drops into a second collecting frame through filter holes in a filter screen.

The invention relates to the field of quality detection, in particular to an alloy casting quality detection method and system based on machine vision, and the method comprises the steps: obtaining an alloy casting surface image, setting a window, and moving the window along the alloy casting surface image to obtain a plurality of window regions; and for each window area, calculating the optimal detection wavelength in the Gabor filter, extracting a texture image in the window area by using the Gabor filter, and inputting the texture image into a preset detection model to obtain the defect type of the surface of the alloy casting. The method can better adapt to the characteristics of different surface defects, can extract clearer and more accurate texture characteristics, and further improves the detection precision of the surface quality of the alloy casting.

A method for installing an energy-saving guide wheel in a ship manufacturing process relates to the technical field of ship manufacturing, and comprises the following steps: installing a stern shaft tube casting and the energy-saving guide wheel under a tire, placing an adjustable platform in place according to a ground sample line, cutting the allowance of the energy-saving guide wheel, placing the energy-saving guide wheel on the adjustable platform, and carrying out simple field cutting and repairing. Meanwhile, a groove of a cut and trimmed part is processed, then the energy-saving guide wheel is adjusted in place through a chain block, finally one-time accurate positioning is achieved, the situation that multiple times of cutting positioning occur when the energy-saving guide wheel and a stern shaft tube casting are installed is avoided, manpower and material resources are reduced, meanwhile, the matching time of a gantry crane is shortened, and the production efficiency is improved. And the cutting gap is reduced from the original 30 mm to the present 3-5 mm, so that the use amount of a large amount of welding materials is saved, the purposes of saving energy and reducing consumption are achieved, and the welding quality is improved.

Fluid runoff systems, methods, and apparatus for processing fluid runoff are provided. In one implementation, a base plate for receiving an inlet casting at a drain basin may be provided. The base plate may include a flat surface with an aperture and an outside edge surrounding the flat surface; a raised lip may surround the outside edge and a flange may extend in a horizontal direction away from the raised lip. The flange may define a flat surface for an inlet casting. The base plate may further include one or more sets of tabs located on the underside of the plate. In another implementation, a fluid runoff system may comprise an inlet casting, a base plate, a drain basin, and a pipe. The base plate may include one or more sets of tabs for connecting with the drain basin.

The invention relates to the technical field of metal casting manufacturing, and discloses a plastic fixing device for high-quality metal casting manufacturing, which comprises an operation table, vertical frames are fixedly mounted on two sides of the top of the operation table, a mounting plate is fixedly connected to the tops of the vertical frames, and an upper mold is fixedly connected to the bottom of the mounting plate. A lower mold is arranged below the upper mold, limiting rods are arranged on the periphery of the upper mold and the periphery of the lower mold, the tops of the limiting rods are fixedly connected with the mounting plate, and the inner surfaces of the limiting rods are attached to the surfaces of the upper mold and the lower mold correspondingly. The edges of the two molds are kept flush, so that the interiors of the molds are kept flush, the precision in the metal casting manufacturing process is improved, the lower mold is integrally turned over by 180 degrees, the finished casting cast in the lower mold is thrown out of the lower mold and falls on an operation table, and direct demolding of the metal casting is facilitated.