561 results about "Ductile iron" patented technology

The invention relates to the technical field of intelligent manufacturing, in particular to a nodular cast iron alloy component self-adaptive optimization method and system based on artificial intelligence, and the method comprises the following steps: obtaining furnace temperature and component parameters, generating a stable comparison legend, screening offset abnormal combinations to form an available set, extracting performance curve characteristics to construct a trend chart, and obtaining a nodular cast iron alloy component self-adaptive optimization result. And superposing the structural parameters and the element distribution positioning segregation area, and outputting feeding correction parameters to generate an optimization scheme. According to the method, normalization processing is carried out on furnace temperature, carbon-silicon ratio and other multi-factor offset values, a component offset map is constructed, trend feature extraction and sorting of response curves under multiple working conditions are combined, component combinations with stable performance are screened out, a mapping relation is established through the structural curvature, the wall thickness slope and the injection rate, and a spatial coincidence map is generated through coincidence analysis. And the feeding direction and the injection rate are inversely calculated, dynamic adaptation of components and the structure is achieved, and the structure uniformity and the performance consistency are improved.

The invention discloses a sand mold casting forming device for nodular cast iron production, and relates to the technical field of nodular cast iron production, the sand mold casting forming device comprises a base, a first mounting groove is formed in the top of the base, and four supporting rods are fixedly mounted at the positions, located on the two sides of the first mounting groove, of the top of the base; a top plate is arranged among the tops of the four supporting rods, a hydraulic cylinder is fixedly mounted at the top of the top plate, the output end of the hydraulic cylinder penetrates through the top plate and is connected with a lifting plate, a displacement mechanism is arranged in the first mounting groove, and a clamping mechanism is arranged outside the displacement mechanism. Through lead screw transmission and motor driving of the displacement mechanism, automatic transfer of a sand mold is achieved, the clamping mechanism automatically drives a clamping plate to clamp the sand mold in the transfer process through cooperation of a guide plate and a first rolling wheel, a first spring provides buffering clamping force, the stability during pouring is guaranteed, the situation that the mold is damaged due to excessive clamping is avoided, and the production efficiency is improved. Clamping is automatically relieved during resetting, and operation is convenient.

The invention provides a nodular cast iron material and a preparation method and application thereof. The preparation method of the nodular cast iron material comprises the following steps that S1, a mixture of pig iron, low-manganese waste steel and foundry returns is heated to be completely molten, alloy and auxiliary materials are supplemented and adjusted to target components, and base iron is obtained; s2, a spheroidizing agent is added into the base iron to conduct spheroidizing treatment, ladle-to-ladle inoculation is conducted after spheroidizing treatment, and an efficient inoculant is added during ladle-to-ladle inoculation; s3, pouring is conducted, and during pouring, a long-acting stream inoculant is added for instantaneous inoculation; and S4, carrying out vibration aging treatment to obtain the nodular cast iron material. According to the nodular cast iron material, collaborative upgrading is achieved in the three dimensions of graphite form-matrix strength-thermal stress dissipation, in a bench test, the number of hot cracks is greatly increased, the service life is obviously prolonged, and reliable guarantee is provided for braking safety of heavy vehicles.

The invention relates to the technical field of quenching treatment, in particular to a nodular cast iron isothermal quenching cooling method and an isothermal quenching cooling device.The method comprises the steps that when nodular cast iron of the current batch is subjected to cooling treatment in a cooling stage before isothermal quenching in a salt bath furnace, a thermal image of the surface of the salt bath furnace is collected in real time; acquiring a first characteristic value of each nodular cast iron; obtaining a furnace wall area and a non-furnace wall area in each thermal image; obtaining an average temperature value of each non-furnace-wall area; acquiring a local high-temperature area in each thermal image; acquiring a high-temperature characteristic value of each thermal image; acquiring a second characteristic value of each nodular cast iron; and the optimal rotating speed of the stirring device is obtained when the next nodular cast iron of the nodular cast iron of the current batch is subjected to cooling treatment in the cooling stage before isothermal quenching. The invention aims to improve the isothermal quenching cooling quality of the nodular cast iron by adjusting the rotating speed of the stirring device during the isothermal quenching cooling of the nodular cast iron.

The invention relates to the technical field of water conservancy projects, and discloses a two-way water stop cast iron gate with a protection function, comprising: a door-shaped gate frame, which is internally provided with a vertical lifting area; the nodular cast iron gate is movably mounted in the vertical lifting area; the bidirectional self-adaptive sealing system comprises an adjusting cavity which is arranged in the nodular cast iron gate and is through up and down; the connecting rod is fixed to the top of the door-shaped gate frame and extends into the adjusting cavity. The piston assembly can move in the adjusting cavity; when the gate descends, water flow penetrates through the filtering structure to enter the adjusting cavity, the self-weight of the gate is increased, the sealing effect is assisted, the gate can still be kept in a closed state especially under the low-water-pressure or water-free working condition, when the gate ascends, water in the adjusting cavity reversely scours the composite filtering plate, impurities are taken away, and self-cleaning of the filtering system and the bottom sealing strip is achieved; the manual maintenance frequency is reduced, and the device has the advantages of being high in practicability and self-cleaning.

The invention discloses a nodular cast iron casting casting device, and relates to the technical field of casting, the casting casting device comprises a centrifugal casting mechanism, the centrifugal casting mechanism comprises a mold cylinder and a centrifugal driving assembly, the output end of the centrifugal driving assembly is in transmission connection with the mold cylinder, and the centrifugal driving assembly is used for driving the horizontally arranged mold cylinder to rotate; the material uniformizing mechanism comprises a material uniformizing barrel and a material uniformizing driving assembly, the output end of the material uniformizing driving assembly is in transmission connection with the material uniformizing barrel, the material uniformizing driving assembly is used for driving the material uniformizing barrel to rotate, a plurality of material uniformizing holes are formed in the barrel wall of the material uniformizing barrel, and in the liquid injection state, the material uniformizing barrel is located in the mold barrel and is coaxially arranged with the mold barrel; the rotating direction of the material uniformizing barrel is the same as that of the mold barrel, and the rotating speed of the material uniformizing barrel is higher than that of the mold barrel; the liquid injection mechanism is arranged in the material uniformizing barrel, and the liquid injection mechanism is used for conveying the molten liquid into the material uniformizing barrel; according to the casting device, the metal liquid can be uniformly sprayed, and the wall thickness deviation is reduced.

This invention relates to a vermicular cast iron alloy with high mechanical strength and thermal conductivity requirements to replace the conventional gray and vermicular cast irons and introduces a manufacturing process for high mechanical strength and thermal conductivity vermicular cast iron alloy and internal combustion engine parts produced from said alloy. The alloy includes carbon, manganese, tin, copper, molybdenum, silicon, magnesium, rare earths, chromium, titanium, niobium, vanadium, tungsten, phosphorus, sulfur, aluminum, and nickel. The alloy has a graphite microstructure consisting of up to 70% of vermicular particles and up to 30% of nodular particles in area, with a matrix in area up to 80% pearlitic and up to 20% ferritic, with presence of segregating carbides of up to 1%.

The mold comprises a lower box shell, a middle box shell, an upper box shell and a reinforcing top cover, the middle box shell is connected with the lower box shell, the upper box shell is assembled at the upper end of the middle box shell, the reinforcing top cover is assembled at the upper end of the upper box shell, and the reinforcing top cover is connected with the middle box shell. A machining groove is formed in the top of the reinforcing top cover, the left side and the right side of the machining groove communicate with a sand-coated pouring cup and an exhaust channel correspondingly, the exhaust end of the exhaust channel communicates with waste gas purification equipment, waste gas generated in the casting process is guided into the waste gas purification equipment through the exhaust channel, and the waste gas can be filtered and purified. According to the mold for casting the ductile iron support and the casting process, natural discharge of gas in the pouring process is promoted, and the situation that the quality of a casting is affected by gas retention is avoided; the chemical components of the casting are controlled, and the pouring temperature is combined, so that the uniformity and mechanical property of the ductile iron structure are ensured, and the comprehensive quality of the casting is improved.

The invention discloses nodular cast iron and a heat treatment method and application, and belongs to the technical field of nodular cast iron. The nodular cast iron is prepared from, by mass, 3.4%-3.8% of C, 2.0%-3.0% of Si, smaller than or equal to 0.6% of Mn, 0.03%-0.06% of Mg, smaller than or equal to 0.15% of Mo, larger than or equal to 0.2% and smaller than or equal to 1% of Cu and Ni, smaller than or equal to 0.02% of rare earth Re and the balance Fe and inevitable impurities. The nodular cast iron is high in pearlite content and smaller in lamellar spacing, the fatigue strength, the tensile strength and the yield strength can be remarkably improved, meanwhile, the nodular cast iron has the advantage of being low in cost, and a planet carrier prepared from the nodular cast iron material can remarkably improve the service reliability of a wind power gear box and reduce the full-life-cycle maintenance cost.

The invention provides a production method of high-strength nodular cast iron and belongs to the technical field of metal material processing. Comprising the following steps: proportioning: proportioning the following raw materials in percentage by weight: 60-70% of pig iron, 20-30% of foundry returns and 10-15% of waste steel; pig iron is added to the bottom of the furnace, foundry returns are added, and finally waste steel is added; after the molten iron is uniformly molten, heating to 1420-1440 DEG C, and sampling to analyze chemical components; inoculation and nitrogen increasing treatment: spheroidizing by adopting a pouring method, sequentially adding pure antimony, a rare earth magnesium spheroidizing agent and a mixture of ferromanganese nitride and a ferrosilicon inoculant, adding the rest of molten iron and the inoculant in stages, and adding an antimony-containing inoculant during pouring; and after pouring is completed, the box is opened for cooling when the temperature of the casting is reduced to 800-900 DEG C. According to the method, the nitrogen increasing process is matched with microalloying, the problems of high alloy adding amount and high cost in the prior art are solved, the alloy using amount can be remarkably reduced, and meanwhile the mechanical property of cast iron is guaranteed.

The invention relates to the technical field of metal casting, in particular to an isothermal quenching nodular cast iron ADI continuous casting method which comprises the steps that the temperature of a crystallizer used in the ADI continuous casting process is collected in real time; calculating a heat exchange coefficient in the crystallizer in real time; friction force generated when the casting blank is pulled out of the crystallizer is collected in real time; presetting each period, and obtaining period steady-state indexes of the heat exchange coefficient, the temperature and the friction force in each period; respectively acquiring abrupt change points of friction force and temperature in each period on a time sequence, and screening friction force change points and temperature change points from the abrupt change points; the lag time length of each friction force change point is obtained; the continuous casting stability index and the suspension confidence coefficient of each period are obtained; and evaluating the abnormal condition of the continuous casting process in each period through the stopping confidence coefficient of each period. According to the method and the device, the unplanned shutdown caused by misjudgment is reduced by timely finding the abnormal phenomenon in the continuous casting process, and the continuous casting production efficiency of ADI is improved.

The invention relates to a thick and large-section nodular cast iron inoculation method based on a laminated slow-release inoculation block. The method comprises the following treatment steps that S1, raw materials are prepared; s2, the high-purity pig iron, the waste steel and the nodular cast iron foundry returns in the step S1 are put into an electric induction furnace to be smelted; s3, performing carbon and silicon testing on the molten iron subjected to slag removal in the step S2 by using a carbon and silicon analyzer, and adjusting components; s4, carrying out primary spheroidizing inoculation by adopting a pouring method; and S5, after spheroidizing inoculation is completed, molten iron is poured into a sand mold, a laminated slow-release inoculation block is placed in the sand mold for slow-release inoculation, and a thick and large-section spheroidal graphite cast iron casting is formed. The method has the advantages that slow-release inoculation is implemented in the cross gate, and molten iron continuously and slowly releases an inoculant in the pouring process through the laminated slow-release inoculation blocks. By means of the method, inoculation recession can be effectively inhibited, the graphite form is improved, and finally the density and the spheroidization rate of graphite nodules in the center of the thick and large-section nodular iron casting are increased.

The utility model relates to the technical field of nodular cast iron pipe butt joint, and discloses a nodular cast iron pipe sliding-in type connection roller skating pushing mechanism which comprises universal balls and threaded rods, the universal balls are used for being matched with an iron pipe to conduct sliding translation or being matched with the iron pipe to conduct rolling, and the universal balls are evenly distributed and installed on a top arc-shaped plate of an arc-shaped installation box. The two oppositely-opened arc-shaped cover plates at the bottom of the arc-shaped mounting box are connected through a lock catch; the bottom end of the threaded rod is in threaded butt joint with a support provided with an inner threaded groove, the top end of the threaded rod is inserted into a sleeve at the bottom of the rotating base, the sleeve rotates relative to the threaded rod to drive the rotating base and the arc-shaped mounting box to adjust the horizontal direction, and then the conveying direction of the iron pipe is adjusted. The threaded rod rotates relative to the support so that lifting of the threaded rod can be adjusted, the height of the rotating base and the height of the arc-shaped mounting box can be adjusted, and the conveying height of the iron pipe can be adjusted. The horizontal angle and height of the sliding-in type connecting roller skate can be adjusted, and the application range is wide.

The invention relates to the technical field of isothermal quenching, and provides an austempered ductile iron isothermal quenching method for prolonging the service life of an ADI casting, which comprises the following steps: collecting and measuring the thickness and surface area of the casting to be subjected to isothermal quenching, and carrying out preheating treatment, first heat preservation treatment, heating to austenitizing temperature treatment and second heat preservation treatment on the casting, the heat flow and the casting temperature are collected in the isothermal quenching process of the casting; marking a target acquisition moment and a prediction basis moment, determining a quenching heat release influence coefficient and a prediction weight of the target acquisition moment, and obtaining a casting temperature prediction value of a next adjacent acquisition moment of the target acquisition moment in combination with the casting temperature; and performing temperature compensation on isothermal quenching of the casting according to the temperature predicted value of the casting, and performing air cooling operation and cleaning on the casting subjected to isothermal quenching to finish isothermal quenching of the austempered ductile iron. According to the invention, the temperature compensation process of isothermal quenching can be ensured to be carried out stably.

The invention belongs to the technical field of laser cladding, and relates to a nodular cast iron crosshead with laser-cladded babbitt metal on the surface and a preparation method of the nodular cast iron crosshead. The base material with the set thickness is removed from the to-be-cladded area of the crosshead body, and an appropriate space is provided for subsequent cladding of a component gradient transition area and a babbitt metal cladding layer. Babbitt metal powder is adopted for cladding the component gradient transition area on the to-be-cladded area, so that smooth transition from the nodular cast iron matrix to the Babbitt metal cladding layer can be realized, and a direct basis for forming high-strength metallurgical bonding is provided. And cladding a babbitt metal cladding layer on the component gradient transition area by adopting babbitt metal powder, and finally forming an antifriction layer with excellent wear resistance and seizure resistance on the crosshead working surface. And the cladding babbitt metal cladding layer is machined till the crosshead body is machined to the standard size, and the installation precision of the crosshead body and the matching precision of the crosshead body and other components are guaranteed.

The nodular cast iron pipe fitting carrying device comprises a bottom core supporting plate, upper supporting plate bodies are symmetrically arranged on the two sides of the upper side of the bottom core supporting plate, and core long-strip rubber pads are fixedly arranged on the upper sides of the upper supporting plate bodies; a U-shaped rotating seat is fixedly arranged at the fixed joint of the upper supporting plate body and the bottom core supporting plate; arc-shaped pressing limiting frames are rotationally arranged on the wing parts on the two sides of the U-shaped rotating seat through hinge shafts; an auxiliary strip rubber pad is fixedly arranged at the edge of the other end of the arc-shaped pressing limiting frame; and stability is enhanced, an upper supporting plate body and a core long-strip rubber pad in the device design provide stable supporting points, and an arc-shaped pressing limiting frame and an auxiliary long-strip rubber pad are used in cooperation, so that the stability of the pipe fitting in the carrying process is further enhanced. Due to the fact that the pipe fitting is directly placed on the rubber pad, direct friction between the pipe fitting and the ground or other hard surfaces is reduced, and the risk that the pipe fitting is damaged in the carrying process is reduced.

The utility model relates to the technical field of nodular iron castings, and discloses a pressure test device for nodular iron castings, which comprises a base, a movable seat is arranged at the upper end of the base, a sliding chute is arranged at the upper end of the base, and a sliding block and a connecting sleeve are fixedly mounted at the lower end of the movable seat. According to the utility model, through mutual cooperation of the guide rod, the movable plate and the air cylinder I, the horizontal position of the water injection pipe can be adjusted, so that the water injection pipe is sleeved in the nodular iron casting, and the bearing capacity of the nodular iron casting is tested through a water flow pressurization mode; by means of mutual cooperation of the movable base, the lead screw, the motor, the first supporting frame and the second supporting frame, three nodular iron castings can be installed at the same time, position adjustment in the horizontal direction can be achieved, after pressure testing of the nodular iron castings is completed, pressure testing can be conducted on the next nodular iron casting rapidly, and the working efficiency is effectively improved.

The invention discloses high-strength wear-resistant wind power ductile iron and a processing technology thereof, and belongs to the technical field of casting. The processing technology of the high-strength wear-resistant wind power ductile iron comprises the following steps: A1, sequentially adding waste steel, a carburant, pig iron, foundry returns and ferroniobium into an intermediate frequency furnace, standing after all furnace charges are molten, and removing slag; a2, a spheroidizing agent, a nucleating agent, metal antimony, titanium carbide and a covering agent are sequentially added to the bottom of a steel ladle, and then molten iron in the step A1 is poured into the steel ladle for spheroidizing and inoculation; a3, the molten iron obtained after spheroidizing and inoculation is subjected to slagging-off and then poured into a casting mold, and a stream inoculant is added in the pouring process; a4, after pouring is finished, slowly cooling in the sand mold to below 400 DEG C, and removing a casting from the casting mold; and A5, the casting is subjected to pulse current quenching treatment and then subjected to pulse current normalizing treatment, and the high-strength wear-resistant wind power ductile iron is obtained. The prepared high-strength wear-resistant wind power ductile iron is high in strength and good in wear resistance, and the low-temperature impact performance meets the requirement of QT500-14AL.

The utility model relates to the technical field of nodular cast iron water meter box covers, and discloses a nodular cast iron water meter box cover with an anti-theft function, which comprises a box body, a cover body positioned at the top end in the box body and a lock cylinder positioned on one side in the cover body, a fixing block is arranged at the position of the clamping groove on the outer side of the box body; the storage groove is formed in one side of the interior of the fixing block, and a clamping block is arranged in the storage groove; and the movable groove is formed in the clamping block. The lock cylinder is mounted in the cover body through the mounting hole, the fixing bolt is mounted in the cover body through the fixing hole, and one end of the fixing bolt is clamped in the positioning hole in the outer side of the lock cylinder, so that the lock cylinder can be positioned and mounted, the lock cylinder can be rotated and used through a key, and the lock block can be driven to rotate and adjust; the cover body and the box body can be locked through the position between the locking block and the protruding block, the anti-theft effect is achieved, and the using effect of the box cover is better.

Reaming tool for reaming very precise bores, especially in gray and ductile iron, comprising a clamping element adapted for clamping in the clamping devices of machine tools, and a cutting element according to the invention, on the circumferential part of which at least two cylindrical longitudinal support surfaces with an angular distance of 60° to 160° are formed, and on the remaining circumference of the cutting element at least three cutting teeth with longitudinal cutting edges and face cutting edges are formed, wherein a cylindrical longitudinal support surface is formed behind the first cutting tooth in the working direction of rotation and the other cylindrical longitudinal support surface is formed in front of the last cutting tooth in the working direction of rotation, characterized in that at the first cutting tooth (4) the distance (L1) of the intersection point (P1), i.e. the longitudinal cutting edge (9) and the inclined cutting edge (10), from the face plane (π) is smallest and at the last cutting tooth (4'') the distance (L1'') of the intersection point (P1'')that is, the longitudinal cutting edge (9'') and the inclined cutting edge (10'') are greatest from the face plane (π), and at least one cutting tooth (4') is formed between the cutting teeth (4) and (4'') with a distance (L1') of the intersection point (P1'), i.e., the longitudinal cutting edge (9') and the inclined cutting edge (10'), from the face plane (π), wherein, for individual cutting teeth (4') and (4), the distances (L1') and (L1) of the intersection points (P1') and (P1) from the face plane (π) decrease from the distance (L1'') in the working direction of rotation, and the distances (L2) and (L2') between the face plane (π) and the intersection points (P2) and (P2'), i.e., the cylindrical longitudinal support surfaces (6) and (6') and the lead-in surfaces (5) and (5'), decrease by at least 0.2 mm as the distance (L1'') between the frontal plane (π) and the intersection point (P1'') are larger.

According to the spheroidal graphite cast iron mold adjusting nut and the production technology thereof, the hardness and tensile strength are enhanced by balancing the carbon-silicon proportion, inhibiting graphitization expansion and reducing shrinkage porosity and meanwhile adjusting the proportion of manganese and chromium, the spheroidization rate is increased through the magnesium element and rare earth, and the problem of uneven hardness is solved; then the proportion of elements such as sulfur, phosphorus, titanium, zinc, lead and vanadium is controlled, impurity harm is reduced, and the stability of tensile strength, yield strength and hardness of the mold adjusting nut is ensured, so that the casting defects of the mold adjusting nut can be effectively reduced by adjusting the component proportion of the nodular cast iron mold adjusting nut, and the mold adjusting nut quality is improved. Therefore, the tensile strength, the yield strength and the hardness of the mold adjusting nut are improved, and the hardness uniformity of the mold adjusting nut is improved.

The utility model discloses a nodular cast iron pipeline socket tool, which belongs to the technical field of socket tools and comprises a pull rod wrench, a pull rod is arranged at the lower end of the pull rod wrench, a pull rod head is arranged at the lower end of the pull rod, a clamping head is arranged at the lower end of the pull rod head, and the clamping head is connected with the pull rod head through a rotating shaft. A first hanging lug is arranged at the upper end of the pull rod head, and second hanging lugs are arranged at the two ends of the pull rod head. The installation of the nodular cast iron pipeline can be quickly completed, tight connection after installation is ensured, and the installation efficiency is high.

The invention belongs to the technical field of demolding materials, and discloses a nodular cast iron demolding agent and a preparation method thereof. The release agent comprises the following components in percentage by mass: 10-40% of base oil, 2-5% of an antirust agent, 0.5-2% of an antioxidant, 6-17% of an emulsifier, 0.8-2.8% of a film-forming agent, 0.01-0.1% of a surfactant, 0.1-0.5% of a defoaming agent and the balance of water, and the sum of the percentages of the components is 100%. The demolding material is suitable for spheroidal graphite cast iron molding demolding with high requirements on spheroidal graphite cast iron workpiece molding surface quality. The optimized additives are optimized and combined, so that the release agent is high in comprehensiveness, workpieces are high in aesthetic degree and easy to demould, and the production efficiency is improved; and the casting forming quality of the nodular cast iron is greatly improved due to excellent surface attractiveness, flatness and anti-rust performance.

The invention belongs to the technical field of ink cast iron casting, and particularly relates to a casting mold for an isothermal quenching nodular cast iron casting gear, which comprises a processing main body, an air hole eliminating assembly arranged on the processing main body, a pouring mechanism and a circulating water cooling mechanism, the circulating water cooling mechanism is arranged on the processing main body; the pouring mechanism comprises an upper mold, a lower mold and a centrifugal assembly, the upper mold is arranged on the pouring mechanism, the lower mold is arranged on the pouring mechanism, and the centrifugal assembly is arranged on the pouring mechanism; through arrangement of the pouring mechanism and rotation of the lower mold, molten metal is tightly attached to the wall of a cavity in the mold and radially flows, the molten metal radially flows from a hub to a tooth crest in the autorotation process, a shrinkage area can be continuously supplemented in the solidification stage, the center deviation problem is effectively avoided, and the defects of shrinkage cavities, shrinkage porosity and the like are effectively reduced; and the tissue compactness is improved.

The invention relates to the field of corrosion protection of key parts of wind power generation equipment, in particular to a long-acting anti-corrosion coating process for a nodular cast iron fan hub and application of the long-acting anti-corrosion coating process. Through multi-stage cleaning and soluble salt control, special sand blasting treatment for a complex cavity and design of a composite coating system containing specific components of primer, elastic intermediate paint and shielding finish paint, the adhesive force, fatigue resistance and long-term protection performance of the coating under a dynamic load are remarkably improved by combining edge pre-coating and thermal spraying with accurate parameters, and the service life of the coating is prolonged. And high-reliability protection of the fan hub in the whole life cycle is achieved.

The present application relates to the technical field of intelligent manufacturing, in particular to a nodular cast iron alloy component self-adaptive optimization method and system based on artificial intelligence, comprising the following steps: obtaining furnace temperature and component parameters and generating a stable contrast legend, screening offset abnormal combinations to form a usable set, extracting performance curve features to construct a trend chart, superimposing structure parameters and element distribution to locate segregation areas, and outputting feed correction parameters to generate an optimization scheme. In the present application, through normalization processing of furnace temperature, carbon-silicon ratio and other multi-factor offset values, a component offset atlas is constructed, the trend feature extraction and sorting of response curves under multiple working conditions are combined, stable component combinations are screened out, a mapping relationship is established using structure curvature, wall thickness slope and injection rate, a spatial coincidence atlas is generated through superimposed analysis, the feed direction and injection rate are calculated, the dynamic adaptation of components and structures is realized, and the uniformity of the structure and the consistency of the performance are improved.

The invention belongs to the technical field of nodular cast iron evanescent mode machining, and particularly relates to a nodular cast iron evanescent mode machining raw material cutting device which comprises a workbench, two first sliding rods are slidably connected to one side of the upper end of the workbench, a blade cover is fixedly connected to the lower ends of the first sliding rods, and a cutting knife is rotationally arranged on the inner side of the blade cover. The workbench is further provided with a through hole covering type positioning assembly. The through hole covering type positioning assembly comprises adjusting plates slidably connected to the two sides of the workbench, and the upper ends of the adjusting plates are fixedly connected with second fixing rings. By means of the through hole covering type positioning assembly, after a to-be-cut raw material is fixed, the elastic cloth on the two sides is attached to the two end faces of the raw material, the through hole is covered, chippings generated in the cutting process can be intercepted by the elastic cloth, the chippings cannot be splashed into the hole, and therefore the situation that in the cutting process, the chippings are prone to being splashed into the hole due to centrifugal force or airflow, and the cutting efficiency is improved is avoided. And air holes are formed in the casting, so that the compactness is reduced.

The automatic positioning control system comprises a plurality of light mark boxes, pipe diameter recognition probes, position recognition cameras and a control module, the light mark boxes and production conveying lines are arranged on the two sides of a flat car track respectively, and the light mark boxes and the production conveying lines are arranged in a one-to-one correspondence mode; each light mark box is connected with the light mark control box, each light mark box is provided with an identification color plate, colors displayed by the light mark boxes through the identification color plates are different, the pipe diameter identification probe and the position identification camera are arranged on the pipe conveying flatcar, the pipe diameter identification probe is arranged corresponding to pipelines stored on the pipe conveying flatcar, and the position identification camera is arranged corresponding to the light mark boxes. The pipe diameter identification probe and the position identification camera are connected with the control module; standardized manufacturing is adopted, and the more on-site parking positions are, the lower the cost is; automatic control is adopted, a visual system is combined, on-site manual intervention is effectively reduced, the operation efficiency of the small flatcar is improved, and on-site labor cost can be reduced.

The invention relates to the technical field of nodular cast iron, in particular to a preparation method of high-strength and high-toughness nodular cast iron, which comprises the following steps: weighing the following basic raw materials in percentage by mass: 48-52% of pig iron, 28-32% of scrap steel, 18-22% of foundry returns, 0.002-0.008% of antimony and 0.015-0.025% of copper, smelting, transferring into a nodulizing bag, and adding an Mg-Ce-Y composite nodulizing agent and an inoculant for inoculation; and after inoculation is completed, casting is conducted, and a casting is fed into a resistance furnace to be subjected to normalizing, quenching and tempering treatment. The mechanical property combination that the tensile strength is larger than or equal to 800 MPa and the ductility is larger than or equal to 10% is achieved.

The invention relates to the technical field of compressors, in particular to high-performance nodular cast iron for a reciprocating piston type compressor unit and a smelting technology of the high-performance nodular cast iron. The high-performance nodular cast iron for the reciprocating piston type compressor unit comprises the following chemical elements in percentage by weight: 3.2-3.6 wt% of C; 2.4 to 2.9 wt% of Si; 0.3 to 0.4 wt% of Mn; p is less than or equal to 0.05 wt%; s is less than or equal to 0.03 wt%; 0.03 to 0.06 wt% of Mg; 0.01 to 0.05 wt% of a rare earth metal; ti is less than or equal to 0.04 wt%; less than or equal to 0.03 wt% of Sb; 0.3 to 0.6 wt% of Cu and Ni; and the balance of iron and inevitable impurities. On the basis of traditional QT450-10 nodular cast iron, nickel and copper elements are introduced, the mechanical performance of the nodular cast iron is improved, and a manufactured compression cylinder product meets the requirements of application scenes with higher requirements for the compression cylinder.