5939 results about "Scrap" patented technology

The invention discloses a mechanical part pre-deformation clamping process method based on simulation analysis, and relates to the technical field of mechanical manufacturing. The method comprises the following steps that S1, a design drawing, material characteristic parameters, blank size specifications and technical parameters of a clamp system of a to-be-machined part are collected; according to the method, an integrated simulation model of a part, blank and clamp system is constructed, blank key parameters and the constraint relation of all parts are fused, multi-field coupling simulation is combined, the theoretical deformation field pre-judgment precision is greatly improved, reliable data support is provided for pre-deformation design, a target compensation curved surface is generated through a geometric inversion algorithm, and the pre-deformation design precision is improved. By matching with a pre-deformation clamp with an adjusting mechanism, reverse pre-deformation is realized, differences of different batches of blanks are adapted, machining and rebound deformation are effectively counteracted, simulation and process parameters are corrected through a detection result by means of a closed-loop optimization mechanism, machining precision stability is guaranteed, trial cutting cost and rejection rate are reduced, and the method is suitable for machining of various easily-deformed parts.

The invention discloses a scrap iron removing device for waste cutting fluid separation, and relates to the technical field of machine tool machining, the scrap iron removing device comprises a settling tank, an L-shaped flow slowing plate is arranged on the inner side of the settling tank, a liquid flowing channel exists between one side of the L-shaped flow slowing plate and the inner side wall of the settling tank, and inclined plates are fixedly arranged on the lower side of the L-shaped flow slowing plate at equal intervals; the inclined plates incline downwards towards the sides away from the liquid flowing channel, overflow notches are formed in the sides, away from the liquid flowing channel, of the settling tanks, the overflow notches are formed in the upper sides of the inclined plates, and defoaming mechanisms are arranged on the lower sides of the L-shaped flow slowing plates; in a narrow space between the inclined plates, the defoaming net shakes repeatedly, the surface tension of foam and an oil film is quickly destroyed through segmentation and friction effects, and metal scraps released by foam breakage quickly sink under the action of the inclined plates, so that the purposes of quickly eliminating the foam and precipitating the metal scraps are achieved, the settling time is greatly shortened, and the service life of the defoaming net is prolonged. And the foam is prevented from entraining a large amount of metal chippings to enter a follow-up circulating pipeline to increase follow-up pressure.

The invention belongs to the technical field of aluminum alloy production, and particularly discloses a low-carbon environment-friendly method for producing a 3104 alloy blank with a high secondary aluminum proportion, which comprises the procedures of smelting, melt purification, online degassing filtration, continuous casting and triple continuous rolling, and is characterized in that alloy components are optimized, secondary aluminum waste is used in a large proportion, the Fe content is increased, and the production cost is reduced. Iron and elements such as manganese in the aluminum alloy form intermetallic compounds, the intermetallic compounds can serve as heterogeneous nucleation, obviously refine alloy grains during casting and increase Fe content, the performance of the 3104 alloy blank is improved, meanwhile, aluminum is replaced with iron, the main material cost can be reduced, in addition, due to the fact that the rolling temperature of an inlet of each rack is high, and meanwhile the finish rolling temperature is also high, the service life of the 3104 alloy blank is prolonged. The self-tempering effect is achieved, internal dislocation of materials is eliminated, the blank edge cracking condition is improved, strip breakage caused by the edge cracking problem in the subsequent rolling process is avoided, safe production is guaranteed, the main material cost is reduced, meanwhile, the blank performance is improved, the 3104 alloy blank is efficiently produced in a high-quality mode, and the purposes of low carbon and environment protection are achieved.

The invention discloses laser cladding repairing equipment for an exhaust valve rod of a marine main engine. The laser cladding repairing equipment comprises a rotating mechanism, a cleaning mechanism and a repairing mechanism. The rotating mechanism adopts a plurality of stepping motors to drive friction wheels, self-centering clamping and intermittent rotation of the exhaust valve rod are achieved through a hydraulic cylinder and a plane connecting rod mechanism, it is ensured that positioning is accurate, and the rotating mechanism adapts to workpieces with different diameters. The cleaning mechanism is arranged below the rotating mechanism, a centrifugal fan is used for simultaneously driving a grinding disc to rotate at a high speed to conduct surface grinding, scrap iron is discharged in time through the negative pressure suction function of the centrifugal fan, and cleaning and dust removal are integrated. And the anti-diffusion cover and the anti-diffusion plate are matched to form a local closed area, so that dust dissipation is effectively inhibited. The repairing mechanism adopts a mechanical arm to carry a laser cladding head, the curved surface of the valve rod can be tracked with high precision, and automatic cladding is completed. The equipment integrates automatic clamping, efficient cleaning, synchronous dust removal and intelligent repairing, and the automation level, the surface treatment quality and the operation safety of repairing of the exhaust valve rod are remarkably improved.

The invention discloses a scrap aluminum classification and rapid identification method, and relates to the field of scrap aluminum classification and rapid identification, the method comprises the following steps: S1, grading pretreatment: to-be-sorted scrap aluminum is conveyed into a three-layer vibrating screen machine through a conveying belt for grading screening, and different sizes of scrap aluminum are sorted out; and S2, impurity separation is conducted, specifically, the classified scrap aluminum is conveyed into a drum-type magnetic separator, magnetic impurities are removed, then the scrap aluminum subjected to magnetic separation is conveyed to an airflow separator, light non-metal impurities are separated, then the scrap aluminum is conveyed to an objective table through a conveying belt, full-process automatic treatment is conducted, manual dependence is reduced, the production efficiency is improved, and the production cost is reduced. A single production line can reduce the workload of sorting workers; and compared with manual sorting, due to the fact that classification is accurate, the rejection rate of the regenerated aluminum alloy can be effectively reduced, and economic benefits are remarkably improved.

The invention discloses a powder metallurgy pressing die, and belongs to the technical field of powder metallurgy, the powder metallurgy pressing die comprises a base, a plurality of supporting rods are fixedly mounted at the upper end of the base, the bottoms of the supporting rods are in threaded connection with lock catch sleeves, and an upper die assembly is mounted among the tops of the supporting rods; a filling assembly is installed on the lower die assembly, the filling assembly can implement a filling function on the die, a recycling assembly is installed on the filling assembly, the recycling assembly can execute a recycling function on crushed aggregates left on the surface of the lower die assembly, and two fixing plates are fixedly connected to the rear end of the upper die assembly. Through the dual effects of brush cleaning and negative pressure adsorption, residual crushed materials on the surface of the lower die plate can be comprehensively collected, conveyed to the material return groove of the hopper through the material return pipe and re-fed to be circularly used for the follow-up filling procedure, the utilization rate of metal powder is greatly increased, the machine does not need to be stopped for cleaning the residual materials, production continuity is guaranteed, and efficiency is improved.

The invention relates to the technical field of automobile part machining, and discloses a sheet punching device for automobile part machining, which comprises a punching table, and further comprises a recycling hopper fixedly connected to the bottom of the punching table, and a rectangular hole is formed in the punching table and used for recycling punching leftover materials into the recycling hopper; the support is fixedly connected to the bottom of the recycling hopper and used for supporting the recycling hopper and the punching table; and the moving mechanism is arranged above the punching table and is used for moving a welding gun head mounted on the moving mechanism. The lower adjusting rod driven by the two-way threaded rod and the upper adjusting rod pre-tightened by the spring form'up-down elastic clamping ', and can automatically adapt to a thin plate; in the clamping process, the first spray hole and the second spray hole spray inert gas synchronously, local protective atmosphere is formed on the upper surface and the lower surface of the notch, oxidation ablation is reduced, the hole edge heat affected zone is reduced, and the precision requirement of the high-strength welding hole of the automobile is met.

The invention relates to the technical field of cable carbon footprints, and discloses a cable full life cycle carbon footprint determination method. The method comprises the following steps: acquiring carbon emission data of all stages of raw material acquisition, production and manufacturing, transportation and distribution, installation and use and scrap recovery in the whole life cycle of the cable through a preset data acquisition system; establishing a multi-dimensional characterization model of the carbon footprint features by using the acquired data; performing life cycle stage adaptability evaluation on the model to generate a carbon footprint contribution degree distribution map; the semantic content of the cable product specification parameters is analyzed, the environmental influence weight corresponding to semantics is deduced, and carbon footprint calculation constraint conditions are formed in combination with the carbon footprint contribution degree distribution map; and generating a carbon footprint determination scheme by using an optimization algorithm according to the constraint condition, and outputting the carbon footprint according to the scheme. The method can systematically integrate cable full life cycle carbon emission related information, and provides a clear path for carbon footprint determination.

The invention discloses a crosslinked polyethylene low-smoke halogen-free flame-retardant power cable which comprises the following hierarchical structures: a conductor layer; an insulating layer; a shielding layer; the shielding layer takes polyethylene as a matrix and comprises the following components in parts by weight: 70-78 parts of matrix, 20-25 parts of carbon black and 2-5 parts of nano montmorillonite modified lignin, the thickness of the shielding layer is 0.8-1.2 mm, the shielding layer and the insulating layer are molded through a co-extrusion process, and the interface gap is less than or equal to 0.1 mm. The nano montmorillonite modified lignin is adopted as a core flame retardant, the addition amount is reduced by 10%-15% compared with that of a traditional halogen-free flame retardant, by taking a 120 mm civil cable as an example, 18 parts of modified lignin replace 25 parts of a traditional flame retardant with the same flame retardant effect, the raw material cost is reduced by 8%-12%, lignin is derived from agricultural and forestry wastes, dependence on a petroleum-based material is reduced, and the environment-friendly flame-retardant cable material is suitable for industrial production. The gradient cooling process shortens the cooling time by 20%-30% compared with the traditional single-section cold water cooling process, and meanwhile, the pre-crosslinking process reduces the subsequent forming internal stress and reduces the rejection rate.

The invention discloses a thickness laser measuring device for corrugated paper packaging box production and a method thereof, and relates to the technical field of laser thickness measuring devices. The concave-convex part of the corrugated board can be extruded through rolling of an air bag of the measurement pretreatment mechanism, flattening is achieved, meanwhile, high-speed airflow generated by an air cylinder purges paper scraps on the surface through air inlet and outlet holes, suction force generated when a piston is reset subsequently can suck the residual paper scraps into a detachable dust collection cylinder, the paper scraps are prevented from blocking a laser light path, and measurement errors are reduced from the source; secondly, in the laser thickness measuring mechanism, a first laser thickness measuring assembly and a second laser thickness measuring assembly move in opposite directions and are matched with the movement of the paperboard along with the conveying belt, measuring point positions in a larger range on the surface of the paperboard can be covered, the contingency of single-point measurement is avoided, a touch switch of a laser thickness gauge can be triggered and starts to work only after the preprocessing mechanism completes the purging action, and the accuracy of measurement is improved. The problem that paper scraps raised during purging interfere with a light path is thoroughly avoided, and the data validity is further guaranteed.

The invention relates to a workbench device and a machine tool. The workbench device comprises a base; the supporting part is arranged on the base, the supporting part is provided with a supporting surface, and the supporting surface is used for being in contact with a supported piece so as to support the supported piece; and at least one of the base and the supporting part is provided with the purging structure, and the purging structure is used for being communicated with an external air source so as to purge impurities on the supporting surface through the purging structure. By means of the technical scheme, the problems that in the related technology, dust particles, metal chippings and other impurities are gathered on the supporting face of the supporting part, abrasion of the supporting face is aggravated, the stability of positioning and supporting is reduced, and the machining quality of a workpiece is affected can be solved.

The invention discloses an intelligent screening and scrap recycling method and device for a steel ball hard grinding machine, and relates to the technical field of industrial automatic control and recycling monitoring. The intelligent screening and scrap recycling method and device for the steel ball hard grinding machine comprise the following steps that S1, scrap separation operation data are collected in real time, and the scrap separation operation data are preprocessed; s2, chipping separation collaborative evaluation is carried out on the chipping separation operation data; s3, wind power regulation decision guidance is carried out on the debris separation operation data entering the regulation area; s4, storing and analyzing historical operation data and adjustment results; and S5, integrating the chipping separation operation data, the chipping separation collaborative evaluation result and the wind power regulation decision guide result to execute operation fluctuation early warning triggering. The problems of separation efficiency fluctuation and serious mistaken separation caused by unstable air pressure, material distribution change and other factors in the winnowing and magnetic suction recovery process after the chippings are screened are solved.

The invention discloses a coating and a method for recovering precious metals in a physical vapor deposition process. The coating mainly comprises a silver coating positioned on the lower layer and an organic silicon modified layer positioned on the surface of the silver coating. Before precious metal is recycled, the coating is prepared on the surface of the position where precious metal needs to be recycled in the physical vapor deposition process, after physical vapor deposition is completed, an adhesive tape is adopted to be pasted to the surface of the coating, and then the precious metal is stripped from the surface of the coating in a mode of tearing the adhesive tape; or scraping the surface of the coating by adopting a tool, so that the noble metal is stripped from the surface of the coating, and stripped noble metal chips are collected; and finally, the adhesive tape with the precious metal or the collected precious metal scraps are heated, and the precious metal is recycled from a heating product. According to the method, efficient stripping and efficient recycling of the precious metal can be achieved, the coating has no influence on physical vapor deposition equipment and the technological process, and the method is simple in technology, high in operability, environmentally friendly, free of pollution and high in economical efficiency when the precious metal is recycled and can be applied to the recycling process of the precious metal on a large scale.

The utility model discloses an aluminum electrolysis anode scrap waste heat utilization device which comprises a trailer, the trailer is provided with a carriage body, a door body is installed on one side of the carriage body, heat preservation materials are laid on the inner wall and the bottom face of the carriage body to form a heat preservation layer, a heat conduction layer is laid on the heat preservation layer on the bottom face of the carriage body, and a plurality of anode scraps and a plurality of new anodes are placed on the heat conduction layer. And the residual poles and the new poles are arranged in a staggered manner. According to the utility model, the new electrode can be preheated by utilizing the residual heat of the residual electrode, and then the preheated new electrode is put into the electrolytic bath for use, so that the heating time and the energy consumption loss of the new electrode in the electrolytic bath can be greatly reduced.

The invention relates to a grinding machine mechanism capable of recycling treating fluid, and relates to the technical field of grinding machines, the grinding machine mechanism comprises a grinding machine base, a scraped material collecting assembly, a magnetic absorption collecting assembly and a spraying assembly, the scraped material collecting assembly is arranged in an inner cavity of a collecting hopper, the magnetic absorption collecting assembly is arranged at the upper end of an inner cavity of a filter box, and the spraying assembly is arranged on the left side of a grinding tool body; polishing residues and scrap iron attached to the surface of a collecting hopper can be preliminarily scraped off through a scraping and collecting assembly, meanwhile, after entering a filtering box, fine scrap iron in treating fluid is efficiently adsorbed through a magnetic absorption collecting assembly, the adsorbed scrap iron is accurately scraped off through cooperation with a roller scraper at the bottom and collected to a collecting drawer, and rapid separation of the scrap iron and the treating fluid is achieved; and the treatment liquid which is purified step by step through the magnetic suction roller, the PP cotton filter element and the activated carbon filter layer in the filter box is matched with the annular spraying ring, so that the purified treatment liquid can be accurately and uniformly sprayed to a stator iron core polishing area, and the dual benefits of environmental protection and efficient processing are achieved.

The invention discloses an automatic nanocrystalline steel strip feeding device which comprises a machine box, a skip car is arranged on one side of the machine box, a telescopic disc changing mechanism is arranged on the machine box, a plate positioning mechanism is arranged on one side of the telescopic disc changing mechanism, a three-axis feeding mechanism is arranged above the plate positioning mechanism, and an impedance measuring mechanism is arranged on one side of the plate positioning mechanism. A scrap suction mechanism is arranged on one side of the impedance measuring mechanism, a conveying belt is arranged on one side of the scrap suction mechanism, and a grabbing and feeding mechanism is arranged above the conveying belt. The invention further discloses an implementation method of the automatic nanocrystalline steel strip feeding device. The clamping jaw assembly is provided with the inner clamping jaw and the outer clamping jaw, and the inner clamping jaw and the outer clamping jaw are both in flexible contact with the steel belt product in the clamping process, so that damage to the steel belt product can be avoided.

The invention discloses a recycled modified polypropylene composite material preparation system and a resource recovery method, and relates to the technical field of high polymer material science and engineering. The raw material pretreatment module adopts near infrared spectrum classification, multi-stage cleaning, drying and crushing, and the moisture content is controlled to be less than 0.5%; the melt blending module melts the materials at 180-220 DEG C, modifiers and additives are added, and vacuum degassing is performed to remove impurities; adding a reinforcing agent into the modification reinforcing module, and performing ultrasonic dispersion and dynamic vulcanization; the molding processing module is used for manufacturing a product through extrusion, injection molding or calendaring; the quality detection module is used for detecting mechanical and thermal properties; the waste recovery module is used for crushing and melting granulation to realize a closed loop; the intelligent control module uses a PLC to coordinate each module. Integrated treatment of waste polypropylene is achieved, the purity of raw materials and the performance of a composite material are improved, the resource utilization rate is increased through closed-loop recycling, manual intervention is reduced through intelligent control, product stability is guaranteed, economic and environment-friendly benefits are achieved, and high-valued circulation of waste plastic is promoted.

The invention relates to the field of material winding, and particularly discloses an automatic deviation rectifying type tape winder for PVC material winding, which comprises a mounting frame, a swing assembly is arranged on the mounting frame, a distance adjusting assembly is arranged on the swing assembly, and a winding assembly for driving materials to be wound is arranged on the distance adjusting assembly. And a driving assembly is arranged on the swinging assembly. According to the device, the tensioning degree of the PVC material can be adjusted, the looseness phenomenon is avoided, the deviation phenomenon of the PVC material is reduced, the deviation prevention effect on the PVC material is achieved in the winding process, deviation of the PVC material is further reduced, after deviation occurs, automatic deviation correction can be conducted on the PVC material under the non-stop condition, the abnormal condition of the PVC material is avoided, and the production efficiency is improved. The product quality is improved, PVC materials are effectively protected, material scrapping is avoided, raw materials are saved, the production and maintenance cost is reduced, the overall production efficiency is improved, the service life of equipment is prolonged, and the automatic deviation rectifying function is achieved.

The invention relates to the technical field of valve flange hole machining, and discloses a valve flange hole chamfering device convenient for cleaning sweeps, which comprises a machining platform, the top of the machining platform is fixedly connected with a mounting frame and a side bracket, and the interior of the mounting frame is provided with two guide rods through a horizontal fixing seat; a transverse moving plate is slidably connected between the two guide rods through a sliding table, a rotating shaft is rotatably connected into the transverse moving plate through a bearing, and a mounting disc is connected to the top end of the rotating shaft through a quick release assembly. Scraps generated by chamfering are collected through the mounting disc, so that follow-up cleaning is facilitated, quick dismounting and mounting of the mounting disc are achieved through the arranged quick dismounting assembly, use is easy and convenient, a valve flange is accurately positioned through a positioning needle, the height of the positioning needle is smaller than the thickness of the valve flange, and the valve flange can be conveniently and quickly dismounted and mounted. Therefore, the positioning pin does not affect the chamfering operation of the mounting hole of the valve flange.

The invention belongs to the technical field of stamping machining feeding, and particularly relates to automatic feeding equipment of a continuous stamping die, which comprises an automatic feeding machine, the automatic feeding machine is arranged on one side of stamping die equipment and is used for automatically feeding the stamping die equipment, a feeding cavity is formed in the automatic feeding machine, paired feeding rollers are arranged in the feeding cavity, and the feeding rollers are connected with the automatic feeding machine. The feeding roller is connected with power equipment on the inner wall of the feeding cavity; the compacting plates on the upper side and the lower side are controlled to be close to the surface of the metal coiled material, meanwhile, airflow containing positive and negative ions is released, the electrostatic adsorption effect between metal chippings and the metal coiled material is reduced, and the metal chippings are promoted to be separated from the surface of the metal coiled material along with the flowing airflow and enter the recycling cavity along with the airflow; the defect that metal scraps on the surface of the metal coiled material are difficult to clean normally due to the electrostatic interaction is effectively overcome, purification treatment on the metal scraps attached to the surface of the metal coiled material is achieved, and the surface quality of the metal coiled material is improved.

The invention relates to the technical field of tempered glass, and discloses high-strength tempered glass and a preparation process thereof.The high-strength tempered glass comprises a bottom plate, a processing tank is fixedly connected to the top of the bottom plate, a feeding pipe is fixedly connected to a groove hole in the left side of the processing tank, sliding rods are fixedly connected to the two sides of the inner wall of the processing tank, and telescopic rings are slidably connected to the inner walls of the sliding rods; the inner wall of the telescopic ring is rotationally connected with a rotating arm; the smashing mechanism comprises a telescopic box, one end of the telescopic box is fixedly connected with one end of a rotating arm, and the left side of the rotating arm is fixedly connected with an inserting frame. The crushing mechanism is arranged, raw materials in a telescopic box can be thoroughly crushed through a plurality of pressure blocks and crushing claws, silica sand and auxiliary materials in the processing tank are efficiently mixed, silica sand blocks existing in the silica sand can be effectively crushed, and therefore the cleaning efficiency of scrap iron in the silica sand raw materials is improved; according to the scheme, the technical problem in the manufacturing field of special tempered glass in the fields of aerospace, vehicles, ships and the like can be solved.

The invention relates to a motor rotor dynamic balance test adjusting device, and relates to the technical field of motor rotors, the motor rotor dynamic balance test adjusting device comprises an operation table, and the upper surface of the operation table is provided with a dynamic balance test assembly, a moving assembly, a turn-milling assembly and a clamping assembly. By designing the moving assembly, the turn-milling assembly and the clamping assembly and adopting a separated layout, the operation space is expanded, metal scraps can be prevented from splashing and accumulating in a narrow space in the turn-milling process to influence equipment operation, the detection precision is improved, brush rollers on the two sides of a linkage cutting opening rotate in the turn-milling process, and the detection precision is improved. According to the technical scheme, scraps are continuously prevented from splashing, the side face of the rotor is cleaned, meanwhile, the rotor can be rotated according to the position of an unbalance point, the turning and milling pressing assembly is matched to achieve turning and milling of any part of the outer side face of the rotor, the coverage area of the turning and milling unbalance point is greatly enlarged, the recheck qualification rate is increased, the recheck frequency is reduced, and then the dynamic balance testing efficiency is improved.

The invention discloses a method for reducing impurity element sulfur in cast high-temperature alloy return scraps, and belongs to the technical field of metal material smelting. The method comprises the following steps: carrying out vacuum induction melting on pretreated cast high-temperature alloy return scraps of the same mark to obtain a return scrap alloy induction ingot; surface oxide skin of the obtained return scrap alloy induction ingot is removed, a primary shrinkage cavity in the upper end is cut off, then the return scrap alloy induction ingot and an auxiliary electrode are coaxially welded, and a consumable electrode is obtained; and after the consumable electrode is baked, electroslag remelting is conducted under the protective atmosphere, and an electroslag ingot is obtained. On the basis of vacuum induction melting, the protective atmosphere electroslag remelting technology is further adopted for conducting deep purification melting treatment on the return scrap alloy ingot, the content of the impurity element S in the return scrap alloy ingot can be reduced to 0.5 ppm or below, and the content of the impurity element S in the return scrap alloy ingot reaches the level lower than the content of the element S in a new material; and the high-temperature oxidation resistance and corrosion resistance of the alloy can be obviously improved, and the fatigue, durability and other mechanical properties of the alloy are improved.

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 discloses a calculation method for waste aluminum optimal proportion and raw material cost in 6-series aluminum alloy round ingot smelting, which comprises the following steps of: firstly, determining suitability and maximum additive amount of waste aluminum: determining component calculation values of all elements according to a preset rule by comparing target alloy component requirements with actual components of the waste aluminum; and calculating the additive amount limited by each element, taking the minimum value of the additive amount as the theoretical maximum additive amount, and judging whether the economic threshold value is reached or not. And for the waste aluminum suitable for addition, cost-benefit analysis is carried out subsequently: the reference cost of not using the waste aluminum and the scheme cost of using the maximum addition amount of the waste aluminum are calculated respectively, and the economic feasibility of purchase and use is evaluated by comparing the reference cost and the scheme cost. According to the method, technical feasibility and economic analysis are combined, a quantitative decision support method is formed, whole-process optimization from casting matching to purchase decision is achieved, and the resource utilization rate is remarkably increased and the production cost is reduced while the stable quality of aluminum alloy products is guaranteed.

The invention relates to the technical field of cutting equipment, and discloses door and window machining cutting equipment which comprises a base, two machining platforms used for fixing workpieces are slidably mounted at the top of the base, each machining platform comprises a mounting cover, a cutting groove is formed in one side of each mounting cover, and a mounting partition plate is transversely and fixedly mounted in each mounting cover; a cutting assembly and a protection assembly are arranged at the top of the mounting partition plate, the blade replacement frequency can be reduced through cooperation of the symmetrically-arranged knife sharpening assembly and a scraper, the consumable cost of door and window machining is directly reduced, meanwhile, it is guaranteed that the good cutting precision of a saw blade is kept for a long time, and workpiece scrapping caused by saw blade abrasion is reduced; by arranging the arc-shaped protective cover and the scrap collecting system, stable operation of the device is ensured, the subsequent cleaning time is shortened, the safety accident occurrence probability is reduced through a protective structure, and the device is used for solving the problems of high production cost and ensuring the machining quality and safety.

The invention discloses a method for preparing high-strength aluminum alloy through regeneration of waste 7-series aluminum alloy and application of the method, and belongs to the technical field of aluminum alloy recovery. The method comprises the following steps: (1) cleaning the waste 7-series aluminum alloy; (2) mechanically crushing to obtain waste chips with the thickness of less than or equal to 2mm and the width of less than or equal to 10mm; (3) the waste scraps, petroleum coke (2-4 wt.%) with the average particle size smaller than 50 nm and metal elementary substance powder are mixed and subjected to ball milling, the Zn content ranges from 5.2% to 11.8%, and the Zn / Mg ratio ranges from 2.5 to 3.0; and (4) the composite material powder is extruded, forged and the like. Through the alloying control effect of the nano petroleum coke, regulation and control of oxidation layer breaking and strengthening phase precipitation are achieved, and the yield strength of the regenerated aluminum alloy reaches 934 MPa and the tensile strength reaches 987 MPa in combination with the dispersion strengthening and thermal mismatch effects. The method solves the problem of grade preservation and regeneration of the 7-series aluminum alloy waste, has the advantages of precise and controllable components, simple process, low cost and the like, and is suitable for manufacturing high-strength aluminum alloy parts in the fields of aerospace, rail transit and the like.

The invention discloses a quantile-event gating-graph residual fusion prediction method and system for emergency material storage and scheduling, and a storage medium. According to the method, through multi-source data integration and feature engineering, quantile learning is adopted to output P50 / P95 quantile prediction; introducing a gating coefficient based on disaster intensity, population vulnerability and road inaccessibility to multiply amplify a high quantile, and fitting a residual error by using a space-time diagram network; further adopting MinT to realize level consistency, and performing conformal calibration on quantiles to ensure coverage; on this basis, a reorder point and a safe inventory are calculated, and a preset and allocation scheme is generated by combining a substitution matrix and vehicle path optimization. The method improves the prediction robustness and service level in an abnormal disaster scene, reduces the stockout and scrapping risks, and has the advantages of interpretability, governance and landing.

The utility model discloses trimming equipment for valve body machining, and belongs to the technical field of valve body trimming. The device mainly comprises a base, a vertical frame is installed on the base, a screw transmission structure is installed on the vertical frame, a sliding plate is installed on the screw transmission structure, a fixing frame and a motor are arranged at the bottom end of the sliding plate, the motor is installed on the fixing frame, the output end of the motor is connected with a trimming wheel and a feeding mechanism, and the feeding mechanism is installed on the base and provided with a three-jaw chuck. The fixing frame is used for fixing the valve body and the material blocking unit, the material blocking unit is installed at the bottom of the fixing frame and comprises a main body ring, the main body ring is composed of an outer ring sleeve installed on the fixing frame and an inner ring in threaded connection with the outer ring sleeve, the bone beams are installed on the outer ring sleeve in a hinged mode, and torsional springs and material blocking cloth are arranged at the connecting positions of the bone beams and the outer ring sleeve. The material blocking cloth is installed outside the bone beams in a surrounding mode. According to the trimming equipment for valve body machining, the effect of preventing metal scraps from splashing in the valve body trimming process is achieved.

The invention discloses a preparation method of a TiAl alloy casting containing return scraps, the TiAl alloy return scraps used in the preparation method are casting sprues, patches and skull which are cut off in subsequent processing, and the preparation method comprises the following specific implementation steps: carrying out ultrasonic cleaning and surface treatment on the return scraps to remove a surface oxide layer; a new material with the target weight of 50% is used for smelting during primary smelting to obtain a primary ingot, a return material is placed below the turned primary ingot before secondary smelting, and then the primary ingot is smelted and poured into a preheated mold to form a casting, so that recycling of a TiAl alloy raw material is realized, the raw material cost is reduced by 50%, the preparation cost is reduced by 33%, and the production efficiency is improved. And the power consumption and the equipment loss are reduced, so that the purposes of energy conservation and emission reduction are achieved. The impurity element control of the cast ingot produced by the method is equivalent to that of alloy produced by conventional raw materials, and is convenient and fast compared with a preparation process by directly utilizing the raw materials. And the poured casting is uniform in component, compact in structure and high in purity.