1116 results about "Continuous rolling" patented technology

The invention relates to the technical field of aluminum foil processing, in particular to a method for producing high-stability 3102 alloy air-conditioning foil in a short process, which comprises the following steps of: smelting, continuously casting and continuously rolling an aluminum alloy raw material to obtain a strip, directly trimming the strip, rolling the strip on a cold rolling unit, preparing a cold-rolled coil with the thickness of 0.15-0.2 mm after three-pass rolling, rolling the cold-rolled coil by an aluminum foil rolling mill, and rolling the cold-rolled coil by an aluminum foil rolling mill to obtain the high-stability 3102 alloy air-conditioning foil. The tensile strength of the aluminum foil finished product is 135-139 Mpa, the ductility is larger than or equal to 19%, and the cupping is larger than or equal to 5.9 mm. The aluminum foil finished product is suitable in tensile strength, small in fluctuation range, higher in ductility and cupping value, capable of better meeting the use requirements of air conditioner foil, capable of guaranteeing the product quality and meanwhile capable of improving the product quality. According to the method, the production process is greatly shortened, the production cost is reduced, and the production efficiency is improved.

The invention belongs to the technical field of aluminum processing, and particularly discloses a method for producing a 1235 alloy cable aluminum foil by using a continuous casting and rolling blank, which comprises the following steps of: rolling the blank by a three-stand continuous rolling mill without cooling and surface milling, performing cold rolling, trimming and intermediate annealing, and performing multi-pass rolling by an aluminum foil rolling mill until the thickness of a finished product is reached, thereby obtaining the 1235 alloy cable aluminum foil. The processing flow is shortened, the metal manufacturing time is shortened, the energy consumption is reduced, after the aluminum foil finished product produced by the continuous casting and rolling blank is annealed, the mechanical property can be stably controlled within the tensile strength of 70-90 MPa, the performance of the finished product is more stable than that of a material produced by a cast rolling method, and the grain structure of the finished product is finer and more uniform than that of the material produced by the cast rolling method.

The invention relates to a high-temperature superconducting cable and a manufacturing process thereof, and belongs to the technical field of electric wires and cables.The cable comprises a supporting framework, a buffer layer, a three-phase superconducting composite layer, a shielding layer, a heat insulation layer and a sheath layer which are sequentially arranged from inside to outside; the heat insulation layer comprises at least two layers of corrugated pipes formed by continuous rolling and welding, and the corrugated pipes are of periodic concave-convex structures obtained by conducting continuous rolling and side seam welding on metal strips to form closed pipe bodies and then conducting embossing treatment on the closed pipe bodies. A woven reinforcing layer wrapping the peripheries of the corrugated pipes is further arranged in the heat insulation layer, and the adjacent corrugated pipes are connected through supporting pieces to form a vacuum interlayer. According to the application, the corrugated pipe formed by continuous coiling and welding is combined with the combined structure of the braided reinforcing layer and the supporting piece, so that the continuous production of the large-length high-temperature superconducting cable can be conveniently realized, and the problems of axial stress concentration and seam accumulation defects existing in a heat insulating layer of a traditional prefabricated sleeve pipe can be eliminated; and the air tightness stability of the vacuum interlayer of the large-length high-temperature superconducting cable is ensured.

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 a hot continuous rolling unit thickness detection and optimization method based on double closed-loop feedback control. In order to improve the problems of thickness control precision, response speed, a multi-rolling-mill cooperative operation mechanism and the like of an existing hot continuous rolling process, the comprehensive regulation and control method combining driving motor double-closed-loop speed regulation control, hydraulic cylinder pressing closed-loop control and thickness delay correction is provided. A multi-rolling-mill interconnection control system is constructed by coupling the rolling mills, the loops, the driving motors and the hydraulic cylinders, and high-precision dynamic adjustment of the tapping thickness is achieved. A double-closed-loop feedback control method is adopted, the rotating speed of a driving motor is adjusted by combining a rotating speed loop and a current loop, rolling force is dynamically adjusted through a hydraulic cylinder, and a thickness delay correction system is introduced to compensate thickness transmission errors between racks. According to the method, the thickness response time and overshoot of the hot rolling mill can be reduced, the thickness control precision and the system stability are improved, and the method has important guiding significance and engineering application value for high-precision hot continuous rolling production.

The invention discloses a wear-resistant steel ball production process and surface treatment equipment thereof, and belongs to the technical field of wear-resistant balls, and the wear-resistant steel ball production process comprises the following steps: step 1, weighing raw materials, smelting the raw materials, and casting into a continuous casting billet; (2) the continuous casting billet obtained in the step (1) is placed in a steel rolling heating furnace to be heated to 1120-1250 DEG C, heat preservation and thorough burning are conducted, and then the continuous casting billet enters a continuous rolling unit to be rolled into a round steel bar; 3, the round steel bar is sent to a heating furnace to be heated to 1030 DEG C to 1100 DEG C, heat preservation is conducted, the round steel bar is taken out of the furnace after thorough burning, then the round steel bar is rolled into steel balls on a ball rolling machine, and the rolling temperature is 940 DEG C to 960 DEG C; 4, the steel balls with the waste heat enter a quenching water tank along a roller way to be subjected to water-cooling quenching, and the water entering temperature of the steel balls during quenching is 830-860 DEG C; and 5, tempering is conducted after quenching of the steel ball, the tempering temperature ranges from 160 DEG C to 200 DEG C, surface treatment is conducted after cooling, and finally the high-abrasion-resistance steel ball is obtained. The wear-resistant steel ball is high in production efficiency and high in quality; and the steel balls are uniform, high in core hardness, low in breakage rate and excellent in wear resistance.

The invention discloses a near-net-shape endless rolling non-oriented electrical steel ultra-thin strip and a preparation method thereof, and belongs to the technical field of metal processing. According to the method, the near-net-shape endless rolling non-oriented electrical steel ultra-thin strip with the finished product thickness being only 0.05-0.15 mm is prepared through the processes of smelting, thin slab continuous casting, endless rolling hot continuous rolling, coiling, online heat preservation, acid pickling, primary cold rolling and continuous annealing, normalizing and secondary cold rolling annealing are not needed in the process, and short-process, low-cost and efficient production can be achieved. The defects that the surface of the non-oriented electrical steel ultra-thin strip is corrugated, the magnetic performance is poor, the surface is scratched and severely narrowed in the annealing process, iron loss is not easy to control, and energy consumption is high are overcome, and the prepared non-oriented electrical steel ultra-thin strip is excellent in magnetic property and can be applied to high-frequency and high-speed motors. And the development requirements of new energy and low-altitude economy are met.

The invention discloses a preparation method of a precise seamless steel tube for a drill rod of a rotary drilling rig, and relates to the field of steel tubes. Comprising the following steps that raw materials are prepared and smelted, molten iron or high-purity waste steel with low phosphorus content, low sulfur content and low gas content is selected as a main raw material, and then the main raw material is subjected to external refining, component fine adjustment and continuous casting and blank treatment; hot piercing is carried out, specifically, the continuous casting round billet is loaded into an annular heating furnace, a multi-section heating system is adopted for heating, and then hot piercing treatment is carried out in a two-roller skew rolling piercing machine; hot rolling extension is conducted, specifically, the perforated tubular billet is rapidly fed into an online heating furnace, and then rolling is conducted on a multi-rack retained core rod or full-floating core rod continuous pipe rolling machine; and sizing / reducing, and rapidly heating. The steel pipe has rigidity, strength and humanity, the fatigue life of the steel pipe is prolonged, meanwhile, the surface smoothness of an inner hole is high, the dimensional tolerance of the inner diameter and the outer diameter is accurate, the wall thickness uniformity is high, the straightness is good, and in addition, the steel pipe also has high internal cleanliness and good wear resistance.

The invention relates to the technical field of aluminum alloy wire processing, and particularly discloses a high-modulus high-conductivity heat-resistant aluminum alloy material, an aluminum wire, a preparation method and a power transmission cable. According to the high-modulus, high-conductivity and heat-resistant aluminum alloy material provided by the invention, the nanoscale TiB2 particles and the micron-sized SiC particles are compounded in the aluminum alloy powder, a dual-reinforcement system is constructed, and the mechanical property and the electrical property of an aluminum conductor are synergistically improved. The invention further provides a preparation method of the high-modulus and high-conductivity heat-resistant aluminum conductor. According to the process, a multi-stage coupling plastic processing technology of hot extrusion, continuous rolling, drawing and surface treatment is adopted. The grain structure is refined through the dynamic recrystallization effect in the series of machining processes, oxidation film defects on the surface and in the structure are damaged through plastic deformation, the rigidity and the conductivity of the aluminum wire are further optimized, and the technical bottleneck that high modulus, high conductivity and heat resistance of traditional aluminum alloy are difficult to consider at the same time is effectively solved.

The invention belongs to the field of metallurgical wire processing, and relates to an aluminum alloy material, in particular to an ultrahigh-strength high-conductivity slender grain aluminum alloy material and a preparation method thereof. The aluminum alloy material is prepared from the following elements in percentage by mass: 0.56 percent to 0.75 percent of Si, 0.2 percent to 0.5 percent of Fe, 0.005 percent to 0.15 percent of Cu, 0.45 percent to 0.85 percent of Mg, 0.1 percent to 0.25 percent of RE, 0.005 percent to 0.03 percent of B, 0.001 percent to 0.02 percent of Ti and the balance of aluminum, the preparation method comprises the processes of smelting, alloying treatment, refining, continuous casting, continuous rolling, quenching, drawing, tempering recrystallization and aging treatment in sequence. By setting the aluminum alloy material formula and improving the preparation method, the distribution of grain boundaries is optimized, and the strength and the conductivity of the aluminum alloy conductor are synchronously improved.

A copper-aluminum composite plate material prepared by aluminum liquid continuous casting and a process thereof. The method includes: S1, heating an aluminum ingot to 700-800° C. and smelting for 1-3 h; S2, degassing smelted aluminum liquid, and keeping the temperature and standing; S3, texturing a copper strip, and then cleaning; S4, heating the pretreated copper strip to 200-650° C.; S5, under the protection of inert gas, continuously casting the treated aluminum liquid on the treated copper strip, performing quenching crystallization on a copper-aluminum composite material, and performing oxygen-free continuous casting; and S6, continuous rolling: rolling the continuously cast copper-aluminum composite material to obtain the copper-aluminum composite plate material prepared by aluminum liquid continuous casting.

The invention discloses a rolling force prediction method of a cold tandem mill based on a Bayes-Light GBM algorithm, and belongs to the technical field of cold rolling, and the method comprises the following steps: obtaining rolling field data of the cold rolling mill, and determining characteristic parameters influencing the rolling force; on the basis of the characteristic parameters influencing the rolling force and the real rolling force of the cold tandem mill, characteristic parameter data sets are constructed; preprocessing the characteristic parameter data set; dividing based on the preprocessed feature parameter data set to obtain a training set and a test set; a Bayes-Light GBM model is constructed and used for predicting the rolling force of the cold tandem mill; on the basis of the training set data, the Bayes-Light GBM model is trained, and the trained Bayes-Light GBM model is obtained; and S7, inputting the data of the test set into the trained Bayes-LightGBM model to realize the prediction of the rolling force of the cold tandem mill.

The invention discloses a method for preparing 3003 alloy container aluminum foil from high-regeneration aluminum. The method comprises the specific steps of smelting, continuous casting and rolling, homogenizing annealing, cold foil rolling, finished product annealing and checking and packaging. During smelting, the secondary aluminum waste and the electrolytic aluminum liquid are used at the same time, the quality of the aluminum melt is guaranteed, and therefore the short-process technology that high-proportion secondary aluminum waste is used, and continuous casting and continuous rolling coils are directly produced through the electrolytic aluminum liquid is achieved; a continuous casting and rolling production process is adopted to directly use aluminum melt to produce an aluminum coil with the thickness of 3-5mm, so that 1-2 rolling passes can be directly reduced, energy is saved, consumption is reduced, the production cost is reduced, and obvious economic benefits and social benefits are achieved; compared with 25-30 hours of homogenizing annealing of cast-rolled blanks in the prior art, the time is shortened by 5 hours, the material production process flow can be simplified, the operation intensity of staff is relieved, the metal in-process time is saved, and the production cost is reduced.

The present invention belongs to the technical field of aluminum processing, and specifically discloses a method for producing 1235 alloy cable aluminum foil by using continuous casting and rolling billets. The billets are rolled on a three-stand continuous rolling mill without undergoing cooling and milling, and then, after cold rolling, trimming and intermediate annealing, are rolled in multiple passes on an aluminum foil rolling mill to the thickness of the finished product. Finally, slitting, annealing and packaging are completed, thereby shortening the processing flow, reducing the metal production time and lowering energy consumption. After annealing, the finished aluminum foil produced by the continuous casting and rolling billets of the present invention can stably control the mechanical properties within a tensile strength range of 70 to 90 MPa. The performance of the finished product is more stable than that of materials produced by the casting and rolling method, and the grain structure of the finished product is finer and more uniform than that of materials produced by the casting and rolling method.

The application discloses a kind of thick gauge 430 ferritic stainless steel laser weld low-temperature rollability processing method, comprising: using-1~‑2mm negative defocusing+8~10kW low-power laser welding, the grain of heat-affected zone is refined;NiCr-3 welding wire is preheated to 300~400℃ and carried out hot wire laser welding, reduces cooling rate;Weld is implemented 700 DEG C / 10-12 seconds short time induction annealing, decomposes martensite and releases residual stress;Weld is inducted to ≥50 DEG C before rolling and restores plasticity;Optimize five rack continuous rolling parameter, and the reduction of first rack is reduced to 15%-20%.The application is by welding-heat treatment-rolling whole process synergic control, makes weld low-temperature cracking rate from 2.6 times / month reduce to 1 times below, and-10 DEG C impact toughness is promoted to 22J, cup convexity qualification rate reaches 95%, and annual economic benefit is greatly improved, applicable to the thickness 3.0~8.0mm 430 stainless steel cold rolling production, solves the technical problem that thick gauge 430 stainless steel weld is easy to crack under low-temperature environment.

The invention relates to a high-hardenability gear steel bar for a new energy automobile and a manufacturing method of the high-hardenability gear steel bar. The high-hardenability gear steel bar comprises the following chemical components in percentage by mass: 0.17-0.25% of C, less than or equal to 0.37% of Si, 0.50-0.90% of Mn, 0.85-1.25% of Cr, less than or equal to 0.025% of P, less than or equal to 0.030% of S, less than or equal to 0.30% of Cu, 0.02-0.06% of Ti, 0.02-0.05% of Al, less than or equal to 0.30% of Ni, 0.15-0.45% of Mo, 0.0005-0.0020% of B, 0.020-0.080% of Nb, less than or equal to 0.0030% of Ca, 0.0090-0.0150% of N, less than or equal to The production and manufacturing process comprises the steps of converter treatment, external refining, vacuum degassing, continuous casting, continuous rolling, shearing or saw cutting, stack cooling and finishing flaw detection. According to the invention, fine Nb (C, N) and (Nb, Ti) (C, N) particles are precipitated by microalloying Nb and Ti, the growth of crystal grains is effectively inhibited, and meanwhile, the hardenability of the material is improved by adding a proper amount of B element. According to the invention, Nb, Ti and B are adopted for composite microalloying at the same time, so that the fine-grain and high-hardenability gear steel material is obtained.

The invention discloses a hot continuous rolling preparation method of a single-sided stainless steel composite plate, which comprises the following steps of: milling and grinding one surface of each of two base materials according to a relative shape complementation mode; the surface is machined into an irregular concave-convex surface comprising n planes which are sequentially connected in the transverse direction or the longitudinal direction, the base material is a non-uniform-thickness blank with the thickness non-monotonically changing in the transverse direction or the longitudinal direction, and n is larger than or equal to 2; assembling according to the stacking sequence of the base material, the composite material, the composite material and the base material to prepare a composite blank; the composite blank is heated at the temperature of 1210-1270 DEG C, then hot continuous rolling is conducted, rolling is conducted for 1-3 passes at the temperature of 1180-1240 DEG C, and the rolling reduction is larger than or equal to 30 mm; rolling is conducted for 3-5 passes at the temperature of 1050-1170 DEG C, and the rolling reduction is larger than or equal to 28 mm; the initial rolling temperature is larger than or equal to 950 DEG C, the finish rolling temperature is larger than or equal to 850 DEG C, then cooling is conducted, and coiling is conducted at 560-660 DEG C; and flattening the obtained composite coil, and then carrying out stack cooling between two steel plates with the temperature of Tf-Tf + 150 DEG C.

The invention discloses a non-oriented silicon steel multi-roller continuous rolling plate shape control process which comprises the following steps: establishing a multi-dimensional dynamic model, and constructing a rolled piece-roller-cooling multi-dimensional physical field coupling model; designing a multi-section polynomial roll-shaped structure, and adjusting parameters of each section of a roll-shaped curve according to the characteristic parameters of the plate strip; setting a dynamic control weight, and adjusting the control priorities of roll bending, roll shifting and rolling force in real time according to the rolling stage; executing plate shape prediction and correction, and updating a control quantity influence coefficient by utilizing a self-adaptive correction technology; and performing plate shape evaluation and optimization, and performing multi-objective optimization according to objective functions of plate shape deviation, energy consumption and roller consumption. By constructing a rolled piece-roller-cooling multi-dimensional physical field coupling model, adopting a multi-section polynomial roller shape structure and a dynamic weight adjustment technology and combining a self-adaptive correction and multi-objective optimization method, the high-order wave shape control problem is effectively solved, and accurate plate shape control in the whole rolling process is achieved.

The invention discloses a self-speed-setting type metal pipe continuous cold rolling device, and relates to the technical field of metal pipe continuous rolling, the self-speed-setting type metal pipe continuous cold rolling device comprises a workbench, the workbench is fixedly connected with a connecting frame, one side of the connecting frame is provided with an inlet used for placing a blank pipe, and the other side of the connecting frame is provided with a metal pipe used for moving out the metal pipe formed by continuous cold rolling. The side, close to the inlet, of the connecting frame is rotationally connected with a rolling roller set, and the side, close to the outlet, of the connecting frame is rotationally connected with a shaping roller set. In the rolling process, when the load of the motor is large due to large resistance, the power of the middle forming roller is cut off, and only the power of the rolling rollers responsible for rolling and the power of the shaping rollers responsible for shaping are reserved, so that the rolling rollers and the shaping rollers on the two sides share the main working load, the overall pressure of equipment can be effectively relieved, and the service life of the equipment is prolonged. The service life of equipment is prolonged, abrasion of a transmission system and a motor is reduced, shutdown caused by too large pressure of the motor is avoided, and the production efficiency stability is guaranteed.

The invention discloses a method for producing an aluminum coil for a building curtain wall with non-standard alloy content from secondary aluminum, and relates to the technical field of aluminum alloy production. S2, continuous casting; s3, continuous rolling; s4, self-tempering is conducted; s5, edge cutting and back rolling; and S6, checking and packaging. According to the method, a large amount of secondary aluminum can be digested, the production cost is reduced, meanwhile, the use amount of primary aluminum is reduced, resource dependence is reduced, production energy consumption is reduced, environmental pollution is relieved, and the goals of carbon reduction, pollution reduction, green expansion and efficiency improvement are achieved; the technological process is simplified, the production cost is reduced, and the manufacturing time is shortened; by means of self-tempering annealing, the annealing production procedure of an annealing furnace is omitted, and short-process low-carbon production is achieved while the mechanical property of a finished product is guaranteed; according to the alloy scheme, the content of iron and silicon elements is high, the number of nucleation particles is large during blank casting, the grain refining basic effect is good, grains can reach the standard by adding a small amount of aluminum-titanium-boron wires, the use amount of the aluminum-titanium-boron wires is saved by 75% or above compared with that of conventional blank production, and the production cost is further reduced.

The invention belongs to the technical field of metallurgy, and particularly relates to a production method of fine grains of steel for high-carbon grinding balls, which comprises the following steps: 1) controlling part of chemical components in the steel: controlling the content of Al to be 0.025-0.040%, the content of Mn to be 0.65-0.80% and the content of Cr to be 0.60-0.90% in percentage by weight; (2) the binary alkalinity of LF refining slag is controlled to be 4.5-6.0, the nitrogen content of molten steel after RH refining is 26-38 ppm, and (3) the final rolling temperature of continuous rolling is controlled to be 950-1000 DEG C. According to the method, the technical requirements of steel for large-specification high-carbon steel wear-resistant steel balls are met, the requirement for fine grains of the grinding ball steel at the grade of 7 or above is met, and meanwhile the requirement for high hardenability of the grinding ball steel and the requirement for low-grade inclusions are also met.

The invention relates to a hot continuous rolling strip steel plate shape control method and device and electronic equipment. The method comprises the steps that plate blank PDI data, equipment parameters and model parameters are read; calculating speed, temperature and thickness parameters of each finish rolling rack based on a finish rolling model; the roll bending force set value of each rack is calculated, and the roll bending force reference value, the convexity self-learning distribution value, the straightness self-learning distribution value and the operator intervention value of the SAMP model table are superposed in response to the situation that the rolling specification is not replaced, so that the roll bending force set value is generated; in response to replacement of steel types, thickness or width specifications, on the basis of superposition of non-replaced specifications, a roll bending force difference value of the SAPP model table and the SAMP model table is introduced to be multiplied by a dynamic adjustment coefficient, and a roll bending force set value is generated; a roll bending force set value is issued to an execution system at the finish rolling inlet moment; and the actual convexity and straightness of the finish rolling outlet strip steel are collected, target values are compared, and the set value of the next plate blank is corrected through self-learning. The method improves the target convexity and straightness hit rate of the hot-rolled strip steel.

The invention relates to the field of steel rolling control, in particular to a cold continuous rolling high-pressure large-flow hydraulic energy-saving control method and system.The method comprises the steps that rolling system parameters and real-time data are collected and preprocessed, and basic data used for pressure regulation and control are obtained; carrying out model coupling analysis on the steel coil process parameters to obtain adaptive rolling pressure data; non-linear fusion evaluation is carried out on acceleration and thickness disturbance, and a self-adaptive dynamic safety margin is obtained; performing real-time synthesis on the adaptive rolling pressure data and the adaptive dynamic safety allowance to obtain dynamic target pressure setting data; and closed-loop energy-saving control is performed based on the dynamic target pressure setting data, so that the energy-saving effect of the hydraulic system is improved.

The invention relates to the technical field of hot continuous rolling material performance prediction, and discloses an efficient hot continuous rolling material performance prediction method and system, and the method comprises the steps: achieving the multi-source data cleaning through multi-dimensional outlier detection and cross-rack space-time interpolation, building a material component graph model, capturing the interaction of elements, and predicting the performance of a hot continuous rolling material. And fusing physical characteristics and gene coding characteristics by adopting a space-time attention mechanism. Cross-production-line model parameters are integrated based on a federated learning framework, model robustness is optimized in combination with physical conservation constraint and adversarial training, and finally, optimal process parameters are inverted through a sequential quadratic programming algorithm and PLC closed-loop control is realized. By adopting a multi-dimensional outlier detection algorithm and a cross-rack space-time interpolation technology, the problems of poor synchronism and abnormal missing detection of a traditional data cleaning method in a hot continuous rolling multi-source heterogeneous data scene are solved, and data quality enhancement in a high-noise environment is realized by joint distribution statistics and physical law constraints.

The invention discloses a rolling force prediction method based on a deformation resistance and rolling force coupling model of a tandem cold mill, which comprises the following steps of: establishing a deformation resistance model of the tandem cold mill for realizing prediction of rolling speed on deformation resistance; a total rolling force model of the cold continuous rolling mill is established and used for predicting the total rolling force in the cold continuous rolling process; establishing a deformation resistance and rolling force coupling model parameter data set; the deformation resistance model of the cold tandem mill is coupled with the total rolling force model of the cold tandem mill, and a deformation resistance rolling force coupling model based on the length of the deformation area is obtained; based on a training set in the parameter data set of the deformation resistance rolling force coupling model, parameter optimization is conducted on the deformation resistance rolling force coupling model based on a differential evolution algorithm, training of the deformation resistance rolling force coupling model is achieved, and the trained deformation resistance rolling force coupling model is obtained; and inputting the test set into the trained deformation resistance and rolling force coupling model to predict the rolling force of the cold tandem mill.

The invention discloses a method for improving the strength and plasticity of a middle-high layer staggered energy metal material, and belongs to the technical field of metal material preparation and processing. According to the method, N times of deep cooling online treatment (N is larger than or equal to 2) are carried out on the middle-high layer staggered energy metal material, a deep cooling medium is liquid nitrogen or liquid helium, plastic deformation is achieved by means of continuous rolling and other processes, and online aging heat treatment can be carried out between the treatment chambers. After treatment, the material forms a nano twin crystal structure, so that the strength and plasticity are synergistically improved, and the high conductivity is kept. According to the method, the limitation of a traditional strengthening technology is broken through, dislocation motion and stress distribution are regulated and controlled through the nano twin boundaries, fracture is avoided, and the conductivity is guaranteed. Meanwhile, the technology can be operated in an integrated and continuous mode, is suitable for large-scale production of wires and thin strips, is high in machining efficiency and stable in performance batch, and meets the requirements for metal materials of high-end connectors in the fields of integrated circuits, new energy automobiles and the like.

The present invention discloses a rolling method for starting rolling of raw plates of non-oriented silicon steel with a silicon-aluminum content of 3.5-5% by threading the strip on a UCMW continuous rolling mill. The present invention adopts a method of starting rolling by pressing down in succession, which is different from the traditional method of starting rolling by pressing down in succession on 5 stands at the same time. It reasonably sets the appropriate rolling process for stands 1 to 5#, which can effectively improve the starting success rate of raw plates of non-oriented silicon steel with a silicon-aluminum content of 3.5-5%, and quickly resume production after the strip breaks during rolling. By using the method of the present invention to start rolling by threading the raw plates, the difficulty of non-steady-state rolling of each stand can be greatly reduced, the fluctuation of the rolling force and tension of each stand can be reduced, and the strip breaks during rolling can be avoided, providing the prerequisite for the UCMW cold continuous rolling mill to mass-produce high-grade non-oriented silicon steel with a silicon-aluminum alloy content of 3.5-5%.

The invention relates to the technical field of boring bar straightening, in particular to a straightening device and method for boring bar machining, the straightening device comprises a workbench, an opposite vertex assembly, a detection assembly, a straightening assembly and a linear driving part, and the opposite vertex assembly is arranged on the workbench and comprises a first center seat and a second center seat; the detection assembly is arranged on one side of the boring rod, comprises a supporting frame and a dial indicator and is used for obtaining a radial run-out value when the boring rod rotates. The straightening assembly is located between the first center seat and the second center seat and comprises a bottom supporting wheel and a top pressing wheel which are correspondingly arranged in the vertical direction, and the boring rod is clamped by the bottom supporting wheel and the top pressing wheel. And the linear driving part is used for driving the bottom supporting wheel and the top pressing wheel to synchronously move in the axial direction of the boring rod according to a jumping value given by the detection assembly so as to realize continuous rolling straightening at a bent section. And through axial continuous rolling, segmented indentations are eliminated, elastic rebound is avoided, and the straightening efficiency is effectively improved.

The invention relates to a preparation method of a weather-resistant steel plate for a rare earth La photovoltaic support, and belongs to the technical field of weather-resistant steel. The problem that traditional weathering resistant steel lacks price advantage in market competition with hot-dip galvanized steel due to high alloy content and high initial cost is solved. According to the invention, chemical component design is optimized, a rare earth element La is introduced, a Cu-La-Cr ternary corrosion-resistant system is constructed, meanwhile, specific smelting, refining, continuous casting and hot continuous rolling processes are adopted, and key parameters of each step are strictly controlled; according to the method, the economical efficiency and the high performance of the steel for the photovoltaic support are both considered through pre-desulfurization treatment, adding components, adding time and adding amount of the lanthanum-iron alloy, the temperature system of hot continuous rolling, the controlled cooling process and the like. The preparation method has the characteristics of being low in cost, simple in process and high in operability, and the weather resistance and the mechanical property of the steel plate are not reduced while the alloy cost can be remarkably reduced, so that the requirements of low cost, high corrosion resistance and high strength of weather-resistant steel in the photovoltaic field of C1 and C2 low-corrosion areas in the northwest are met.

The invention relates to a process for preparing a phosphor copper rod by using a phosphonate-amide composite purifying agent as a quenching aid, and belongs to the technical field of non-ferrous metallurgy. Phosphorus pentoxide and sodium carbonate are mixed and decocted into fused salt, the fused salt is cooled and ground and then added into a corundum crucible together with scrap copper to be rapidly heated, compressed air is blown in, and slagging-off is conducted after heat preservation and standing; blowing mixed gas into the melt for reduction refining; adding calcium boride into the melt for refining; the refined copper liquid is subjected to continuous casting and continuous rolling; rapidly immersing the phosphorus copper rod subjected to continuous casting and rolling into a quenching aid solution, and carrying out quenching treatment; and the quenched phosphor copper rod is blow-dried and dried, and the high-conductivity phosphor copper rod is obtained. The high-purity phosphorus copper rod prepared by the method is excellent in key indexes of copper content, phosphorus content and conductivity, and meets the expected requirements of high purity and high conductivity.