716 results about "Continuous rolling" patented technology

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 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 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 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 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 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 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 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 discloses a surface corrosion-resistant invar alloy precision strip for a liquid cargo cabin of a liquefied natural gas carrier and a manufacturing method. The surface corrosion-resistant invar alloy precision strip comprises the following components: 35.6%-37.1% of Ni, 0.35%-0.80% of Si, 0.05%-0.10% of Ce, 0.015%-0.030% of C, less than or equal to 0.35% of Mn, 0-0.0008% of O, less than or equal to 0.01% of N, less than or equal to 0.003% of S, less than or equal to 0.005% of P, less than or equal to 0.20% of Cr, less than or equal to 0.20% of Cu, less than or equal to 0.05% of Al, less than or equal to 0.003% of Ti and the balance of iron and inevitable impurity elements. According to the formula, through EAF, AOD, LF, continuous casting or die casting, hot continuous rolling or solid solution pickling after forging, cold rolling in multiple rolling processes, annealing and protective film prefabrication treatment, the temperature range of the prepared material is about 1.5-1.8 * 10 <-6 > / DEG C from-163 DEG C to 20 DEG C, the yield strength Rp0.2 value is larger than or equal to 300 MPa, the tensile strength Rm value is larger than or equal to 480 MPa, the ductility A50 is larger than or equal to 35%, surface corrosion does not occur within the machining period or storage and transportation time of 15 days under the conventional condition, and the service life of the material is prolonged. And particularly, the risk of surface rusting in the processing, storage and transportation processes is greatly reduced.

The invention belongs to the technical field of pipeline steel production, and discloses a hot continuous rolling production method of Mo and Ni-free X70M pipeline steel, which comprises the processes of slab heating, rough rolling, finish rolling, laminar cooling and coiling, and the pipeline steel comprises the following chemical components in percentage by mass: 0.060 to 0.090 percent of C, 0.10 to 0.25 percent of Si, 1.50 to 1.70 percent of Mn, 0.20 to 0.30 percent of Cr, 0.045 to 0.070 percent of Nb, 0.020 to 0.050 percent of Al, less than or equal to 0.005 percent of S, less than or equal to 0.012 percent of P, 0.020 to 0.030 percent of Ti, less than or equal to 0.0050 percent of N and the balance of Fe and inevitable impurities. According to the pipeline steel, Mo and Ni are not added, the alloy cost is extremely low, meanwhile, a hot rolled steel strip of the pipeline steel has good low-temperature tearing resistance and low yield ratio, and the safety in the pipeline service process can be guaranteed.

The width control method in the hot continuous rolling and rough rolling cross rolling process comprises the steps that casting blank parameters, product parameters, roller parameters and technological parameters are determined; the rolling reduction of each pass of flat rollers of the rough rolling double racks and the rolling temperature of each pass are calculated; calculating the width free broadening amount of each pass, the total free broadening amount and the width value after broadening; calculating the total width reduction amount of the vertical rolls of the roughing mill unit, the width reduction amount of each pass and the width of the steel plate after width reduction; according to the dog bone recovery broadening coefficient and the free broadening coefficient of the previous rolled steel plate, the free broadening coefficient and the dog bone recovery broadening coefficient of the current steel plate during cross rolling are determined; calculating the free broadening amount and the dog bone recovery amount after the width is reduced and the dog bone is rolled by the flat roll; calculating a new width reduction amount of each pass and a set value of the width of the steel plate in each pass after width reduction; and according to the set value of the steel plate width of each pass, the vertical roll opening degree control value in the rolling width control process of each pass is obtained through calculation.

The present application relates to copper plate strip processing technical field, provide a kind of advanced copper plate strip continuous rolling process, including S1.selecting the copper ingot of copper content above 99.9%, after sawing and surface polishing to obtain raw material;S2.copper ingot is heated in heating furnace, ensure the uniformity of copper ingot internal temperature;S3.using roughing mill to the copper ingot after heating is rolled through 2-3 passes roughing;S4.copper plate strip after roughing enters medium rolling mill, and medium rolling pass is 3-5 times;S5.copper plate strip after medium rolling enters finishing mill, and finishing pass is 3-4 times;S6.on-line cooling: copper plate strip after finishing immediately enters on-line cooling system.By early accurate sawing and polishing treatment, the initial quality of copper plate strip is guaranteed, the smooth progress of subsequent rolling process is ensured, the multi-pass continuous rolling process of roughing, medium rolling and finishing is combined with on-line cooling, through strict parameter control, not only improve production efficiency, but also effectively reduce energy consumption, reduce production cost.

The invention belongs to the field of profile steel production, and particularly relates to a rolling method of hot-rolled Q450NQR1 weather-resistant H profile steel, which adopts a reversible cogging mill and a universal finishing mill group for rolling: after the cogging mill rolls for 3-5 passes for cogging, a universal continuous rolling mill is adopted for finish rolling 9 continuous rolling, and the arrangement sequence of finish rolling hole patterns is U1-U2-U3-E4-U5-U6-U7-E8-U9; wherein the U3 and the U6 are curved web hole patterns, and the vertical roll is in drum-shaped design. The method has the advantages that one BD cogging mill is used for large-rolling-reduction rolling to crush crystal grains, and then the nine-rack universal continuous rolling mill is used for finish rolling, so that the metal flowing and steel biting conditions are improved. The grain structure is refined through large rolling reduction and low-temperature rolling, the problems that the Q450NQR1 weathering resistant steel is poor in metal fluidity, prone to cracking and the like due to alloy elements are effectively solved, and meanwhile the mechanical property, the size precision and the surface quality of products are guaranteed.

The invention discloses a rolling manufacturing method of low-decarburization medium-chromium round steel for a caterpillar track link and a product of the rolling manufacturing method, and belongs to the technical field of alloy steel rolling. The method comprises the following steps: smelting molten steel, wherein the molten steel comprises the following components in percentage by mass: 0.28-0.34% of C, 0.15-0.35% of Si, 0.50-0.85% of Mn, less than or equal to 0.030% of P, less than or equal to 0.030% of S, 0.80-1.10% of Cr, less than or equal to 0.30% of Ni, 0.10-0.30% of Mo, less than or equal to 0.30% of Cu, 0.010-0.060% of Al and the balance of Fe and impurities; lF refining, RH vacuum degassing (the time is longer than or equal to 20 min, and the hydrogen content is smaller than or equal to 1.5 ppm), electromagnetic stirring continuous casting (the superheat degree is 15-25 DEG C), slow cooling (longer than or equal to 12 h), segmented heating (the total time is shorter than or equal to 200 min, and the residual oxygen content is lt, 3%), multi-stage high-pressure water descaling (the pressure before finish rolling is 30-35 MPa) and hot continuous rolling (the compression ratio is larger than or equal to 6) are conducted. The total decarburized layer depth of the obtained round steel is smaller than or equal to 0.30 mm, and the round steel has high hardenability, excellent mechanical property and low surface defect rate and is suitable for heavy-load components such as a hydraulic excavator caterpillar track link.

The invention discloses an intelligent collaborative optimization system and method for multiple twin bodies in hot continuous rolling, and belongs to the technical field of ferrous metallurgy intellectualization. The system is composed of an edge device layer, a block chain layer, a federal transfer learning layer, an enhanced decision-making layer and a security and privacy protection layer. The method comprises the following steps: constructing a digital twinborn body of equipment on an edge equipment layer, acquiring equipment data in real time to update the digital twinborn body, encrypting the data and uploading the data to an alliance chain; the legality of the uploaded data is verified in the block chain layer, and the contribution degree of the equipment node is evaluated; the global model weight of the target equipment prediction model is optimized through a dynamic weight algorithm in the federal transfer learning layer, and the input of the target equipment prediction model is obtained through knowledge transfer; and generating a self-adaptive control strategy based on the multi-target reward at the enhanced decision-making layer. According to the method, the contradiction between data privacy and real-time performance of multi-device collaboration is solved, the abnormal condition in the production process can be quickly responded, the production requirement is met, and the multi-device collaboration effect is improved.

The invention provides a hot continuous rolling temperature control method and system and electronic equipment, and relates to the technical field of metallurgical industry process control. The method comprises the steps that multi-modal data of the hot continuous rolling production process at the current moment is obtained; performing feature extraction on the multi-modal data to obtain heat exchange features related to the strip steel in the hot continuous rolling production process, and constructing a state vector based on the heat exchange features; according to the state vector, cooperative operation is carried out through a mechanism rule in the equivalent heat exchange coefficient dynamic model and a machine learning correction item, and an equivalent heat exchange coefficient at the current moment is obtained; according to the equivalent heat exchange coefficient, in combination with a preset temperature target, a composite control strategy including rack control and temperature control at the current moment is generated; and controlling the execution mechanism to operate according to the composite control strategy. By means of the equivalent heat exchange coefficient dynamic model, the stability and consistency of the strip steel temperature under the dynamic rolling working condition are guaranteed, and the temperature control effect is improved.

The invention provides a hot continuous rolling finish rolling section cooling method, system and equipment and a storage medium, and relates to the technical field of metallurgy hot rolling control, and the method comprises the steps that according to a product outline and a rolling schedule of rolled strip steel in a hot continuous rolling finish rolling section, the proportional relation between the inlet cooling water amount and the outlet cooling water amount is determined; based on the thermal load distribution of each area section of a roller in the hot continuous rolling finish rolling section and the width parameter of rolled strip steel, the distribution modes of inlet cooling water and outlet cooling water are determined respectively; when the hot continuous rolling finish rolling section is cooled according to the proportional relation and the distribution mode, rolling process parameters of the hot continuous rolling finish rolling section are obtained; and according to the rolling process parameters, in combination with a preset roller system model and a strip steel metal model, coupling control is conducted on the proportional relation and the distribution mode of the inlet cooling water amount and the outlet cooling water amount, and meanwhile fine adjustment is conducted on the inlet cooling water amount and the outlet cooling water amount till the hot continuous rolling finish rolling section meets the machining requirement. The cooling effect of the hot continuous rolling finish rolling section is improved.

The invention discloses a method for preparing a TC4 thin titanium coil through hot continuous rolling. The method comprises the steps of cast ingot smelting, slab preparation, slab heating, black skin coil rolling, black skin coil bell-type furnace annealing, shot blasting and acid pickling. In the slab preparation process, a titanium alloy cast ingot is subjected to cogging forging for 3-5 heating numbers, the initial forging temperature of the first heating number is 980-1050 DEG C, remelting temperature compensation is conducted after three times of upsetting and drawing-out, the initial forging temperature of the subsequent heating number is 940-980 DEG C, a rolled slab is prepared through repeated upsetting and drawing-out, remelting heat preservation is conducted for slab dual annealing, and after heat preservation is finished, the slab is taken out of a furnace and cooled to the room temperature; in the slab heating process, a slab to be rolled is fed into a common stepping heating furnace to be heated, the slab passes through a preheating zone, a first heating zone and a second heating zone of the heating furnace and then enters a 950-980 DEG C soaking zone to be subjected to heat preservation, and after heat preservation is finished, the slab is taken out of the furnace to be rolled. According to the method, the surface quality of the obtained product is better, the cost is reduced, the yield is increased, and good economic benefits are achieved.

The invention relates to the technical field of lithium battery electrode rolling forming, and discloses a lithium battery electrode pressing forming device and method, the lithium battery electrode pressing forming device comprises a workbench and a base, the top of the workbench and the bottom of the base are fixedly installed, and the two sides of the workbench are each provided with a deviation rectifying tension compensation mechanism. According to the compression molding equipment and method for the lithium battery electrode, the contact detection mechanism can convert a pole piece deviation force into a detection force and transmit different detection forces according to different deviation degrees, and the oil path switching mechanism carries out different opening operations on an oil path according to the magnitude of the detection force; the tension adjusting mechanism converts rotating force into adjusting force for tension compensation adjustment, the tension can be detected and accurately adjusted in real time when the pole piece deviates during high-speed continuous rolling, the problem that the edge of the pole piece and the pressure of a roller are unbalanced due to deviation is effectively solved, and the service life of the pole piece is prolonged. And the conditions that the thickness consistency of the pole piece becomes poor, the compaction density is not uniform, the edge is torn, wrinkles or belt breakage are generated and the like are prevented.

The invention provides a multi-degree-of-freedom robot clamping jaw structure and a control method thereof, and relates to the technical field of self-adaptive clamping jaws, and the multi-degree-of-freedom robot clamping jaw structure comprises a multi-degree-of-freedom mechanical arm, a double-shaft-hole plate, a first rotating shaft, a second rotating shaft, a cam part, a wobble wheel part and a driving unit. The invention creatively provides a pre-positioning and rolling clamping two-stage clamping mode, firstly, self-adaptive pre-tightening is carried out through independent rotation of the wobble wheel piece, and a gap is eliminated; then continuous rolling extrusion force is applied to the side wall of the workpiece through synchronous and same-direction rotation of the cam piece and the wobble wheel piece; by means of the dynamic linear contact extrusion mode, anti-rotation torque far larger than static friction force can be generated, and therefore on the premise of not depending on the large static friction force, axial movement and circumferential rotation of the workpiece in the carrying process are effectively restrained, and stable clamping in essence is achieved.

The invention discloses a method for improving the same-plate difference of non-oriented silicon steel through multi-process coordinated regulation and control. The method comprises the following steps: cooperatively controlling the following key process parameters: 1) hot continuous rolling process control: plate shape target control; width control; configuring and grinding a roller; a roller changing period; (2) five-rack acid continuous rolling procedure control: roller configuration; grinding the roller; and roll bending force control is conducted, specifically, the roll bending force of working rolls of all the racks is set to be 320 + / -20 kN for the rack S1, 330 + / -20 kN for the rack S2, 330 + / -20 kN for the rack S3, 330 + / -20 kN for the rack S4 and 330 + / -20 kN for the rack S5, an automatic mode is adopted, and dynamic adjustment is conducted according to feedback of a real-time strip shape instrument. According to the method, key process parameters in the whole hot rolling and cold rolling process are accurately controlled, the synergistic effect is formed, the transverse thickness uniformity of the strip steel is fundamentally improved, and therefore the high-quality non-oriented silicon steel product with the extremely small same-plate difference is obtained.

The utility model discloses an accurate guide device for hot continuous rolling of a kovar alloy plate. The accurate guide device comprises a rack, a conveying roller, a guide mechanism, a fixing mechanism and a cleaning mechanism, the rack is fixed on the ground; the conveying rollers are evenly and rotationally connected to the machine frame through bearings, and the guiding mechanisms are symmetrically installed on the two sides of the kovar alloy plate. The fixing mechanism and the cleaning mechanism are both mounted on the guide mechanism; the guide mechanism comprises a support frame, a connecting plate, a rotating roller, a bidirectional threaded rod, a guide rod and a motor II; the two-way threaded rod is rotationally connected to the rack through a bearing, and the guide rods are fixed to the portions, on the two sides of the two-way threaded rod, of the side wall of the rack. The motor is fixed to the outer side wall of the rack, and the output end is connected with one end of the bidirectional threaded rod. According to the utility model, the Kovar alloy plate can be accurately guided; in the Kovar alloy plate guiding process, the side wall makes contact with the rotating roller, friction can be reduced, and damage to the Kovar alloy plate is further reduced.

The utility model provides a continuous rolling hole pattern system for rolling square billets into round bars, which comprises six hole patterns, namely four square hole patterns, one elliptical hole pattern and one round hole pattern in sequence, the groove bottom of the third square hole pattern is an arc, and the groove bottom of the fourth square hole pattern is an arc. According to the pass system, flat-bottom grooves of the third frame of square pass and the fourth frame of square pass are changed into protruding arc-shaped groove bottoms, the rolling reduction of the center area of a square billet is increased, the phenomenon that a rolled piece is twisted in the rolling process due to factors such as incoming material size fluctuation and rolling mill stand jumping is avoided, and the rolling stability is improved.

The invention belongs to the technical field of hot continuous rolling production lines, and particularly relates to a strip steel laminar cooling device. Comprising a foundation frame, a header assembly, a turnover mechanism and a plurality of switching assemblies. The header assembly comprises an overturning cross beam and a plurality of upper headers arranged side by side, and the overturning cross beam is parallel to the foundation cross beam and used for supporting the upper headers; the turnover mechanism comprises a linear driver and a crank arm, one end of the crank arm is connected to the turnover cross beam, and the other end of the crank arm is rotationally connected to the basic cross beam; each switching assembly is connected between the water inlet end of the corresponding upper collecting pipe and the water supply pipeline, the rotating part of each switching assembly is used for rotating along with overturning of the corresponding upper collecting pipe, and each switching assembly is connected to the foundation cross beam in a floating mode. According to the header assembly, the independent turnover mechanism is arranged to bear the turnover load of the whole header assembly, so that the switching assembly only bears the functions of fluid communication and follow-up rotation, harmful radial force generated due to the fact that a plurality of switching assemblies are installed in a non-coaxial mode is eliminated, the reliability of the switching assembly is improved, and the service life of the switching assembly is prolonged.

This invention discloses a method for preparing TC4ELI titanium alloy rods with improved fatigue performance of ultrasonic bone scalpels, comprising the following steps: preparing TC4ELI titanium alloy ingots with optimized composition; mixing sponge titanium, aluminum-vanadium alloy, aluminum briquettes, titanium-iron alloy, and titanium dioxide in a certain proportion and pressing them into electrodes, followed by three vacuum melting processes; subjecting the TC4ELI titanium alloy ingots to multi-pass upsetting and drawing forging to obtain square billets; heating the square billets for billet rolling, followed by multi-pass hot continuous rolling into coils; subjecting the coils to annealing, rounding, oxide scale removal, straightening, and grinding processes to obtain finished rods; and tempering the finished rods in a vacuum furnace. The TC4ELI titanium alloy rods obtained by this method possess excellent ultra-high cycle fatigue performance, making them suitable for ultrasonic bone scalpel cutting heads subjected to high-frequency vibration and impact loads, effectively extending the service life of ultrasonic bone scalpels and reducing the risk of scalpel breakage during surgery.

This invention relates to an automatic control method for the second-by-second flow rate correction of hot-rolled strip steel. The method includes the following steps: Step 1: Acquisition and preparation of some physical quantities; Step 2: Automatic judgment of the narrowing state; Step 3: Automatic locking of the strip looper and the mill number; Step 4: Automatic judgment and automatic correction of the second-by-second flow rate. This scheme automatically determines the looper and mill requiring correction based on the looper angle state during strip head threading, the rolling force correction coefficient state, and the duration of strip head width narrowing. Instead of relying on traditional speed correction for control, it automatically adjusts the rolling force prediction parameters of the corresponding mill that affect thickness to control the looper flow rate. This fundamentally optimizes the factors affecting abnormal second-by-second flow rate between finishing mill stands, thereby achieving automatic control and correction of the second-by-second flow rate of hot-rolled strip steel.

The application discloses a non-oriented silicon steel for a fixed-frequency compressor motor core and a preparation method thereof. The preparation method comprises the following steps: steelmaking, continuous casting, and the chemical composition of the continuous casting blank is as follows in terms of mass percentage: Si: 0.7%-1.0%, Al: 0.42%-0.60%, Si / Al=1.5-1.7, Mn: 0.1%-0.3%, Nb<=0.005%, V and Ti are all <=0.006%, Cr and Ni and Cu are all <=0.03%, and the rest is Fe; the continuous casting blank is heated to 1050-1100 DEG C and kept for 180+ / -30 min, rough rolling, finish rolling and coiling; the finish rolling opening rolling temperature is 880-910 DEG C, the outlet temperature is 800-820 DEG C, and the coiling temperature is 600-620 DEG C; acid continuous rolling is carried out to prepare a cold-rolled plate with a thickness of 0.500+ / -0.005 mm; and annealing is carried out at an annealing temperature of 880-920 DEG C for an annealing time of 70s+ / -10s.

The application discloses a seamless steel tube continuous rolling pipe mill pass design method, which executes the following steps: 100: calculating the steel theoretical sectional area at the outlet of each rack; 200: determining the outer contour and inner contour of the steel tube at the roll gap, and obtaining the actual sectional area of the steel tube at the outlet of each rack; 300: calculating the actual value of the tube bar contact angle; 400: comparing the difference between the actual value of the tube bar contact angle and the set value of the tube bar contact angle with a preset first threshold value, if the difference is less than the first threshold value, the next step is executed; if the difference is greater than the first threshold value, the separation arc radius is increased, and the increased separation arc radius is taken as the initial value of the separation arc radius, and the step 200 is executed; 500: comparing the difference between the actual sectional area of the steel tube and the steel theoretical sectional area with a preset second threshold value, if the difference is less than the preset second threshold value, the step of the next rack is executed until all the racks are executed completely; if the difference is greater than the preset second threshold value, the groove bottom arc radius is reduced, the reduced groove bottom arc radius is taken as the initial value of the groove bottom arc radius, and the step 200 is executed.

The application discloses a strip steel coil shape defect prediction and diagnosis method based on deep learning, comprising the following steps: collecting production data in the strip steel hot continuous rolling coiling process; calculating equipment accuracy index characteristic values and preprocessing the calculation results; constructing a strip steel coil shape quality prediction model based on a twin semi-supervised learning network, and training the model by using the preprocessed equipment accuracy index characteristic value data; sorting strip steel coil shape quality professional information, and constructing a strip steel hot continuous rolling coil shape quality knowledge base by means of knowledge graph technology; combining the strip steel coil shape quality prediction model and the strip steel hot continuous rolling coil shape quality knowledge base to perform real-time prediction and diagnosis on the to-be-tested strip steel coil shape defect, and obtaining a defect type and corresponding treatment measures. The application is based on strip steel hot continuous rolling production industrial big data, and realizes real-time judgment and auxiliary decision of the strip steel coil shape defect by means of deep learning and knowledge graph technology, so that the product quality control and production line intelligent manufacturing level can be improved, and the construction progress of a steel industry digital factory is promoted.