166results about How to "Increase rolling speed" patented technology

The invention discloses a method for setting concentration of emulsion in rolling of a five-rack cold continuous rolling unit extremely thin band. The method includes the following steps: (1) collecting characteristic parameters of main devices of a unit and to-be-rolled bands, main rolling process parameters and process lubricating system parameters, (2) defining related process parameters, (3) computing roll bending force and the roll channeling amount, (4) assigning related search process parameters, (6) computing concentration process parameters, (6) computing the search process speed of the highest rolling speed, (7) computing friction coefficients of various racks under the current condition, (8) computing rolling force, rolling power, slip factors, heat slip damage indexes and vibration coefficients of the various racks under the current condition, (9) computing heat convexity degrees of working rollers of the various racks, (10) computing an exit plate shape and the pressing width, and (11) obtaining and outputting the optimum proportion concentration. The steps are executed by a computer. According to the method, the rolling speed can be quickened, the rolling efficiency can be guaranteed, slip, heat slip damage and vibration are avoided, and it is guaranteed that the exit plate shape of the final rack and the pressing width of the roller ends of the working rollers are the smallest.

The invention discloses an emulsified liquid concentration optimization setting method in the high-stage automotive sheet cold rolling process of a double-rack four-roller mill. On the basis of a large amount of field test tracking and theoretical researching, in cooperation with equipment characteristics of the double-rack four-roller mill and process characteristics of high-stage automobile sheet rolling, on the premise that it is guaranteed that defects such as slippage, hot slip damage and vibration are avoided, an emulsified liquid concentration optimization setting technology suitable for the high-stage automobile sheet cold rolling process of the double-rack four-roller mill is provided with the highest rolling speed which can be reached as a target; two functions of improving the rolling speed to the maximum degree to guarantee the rolling efficiency and avoiding the defects such as the slippage, the hot slip damage and the vibration to the maximum degree can be achieved through the technology.

The invention discloses an optimizing method of using nick prevention and control as target in cold steel strip continuous-rolling machine, collecting equipment, steel strip characteristics, rolling process and other parameters of a cold continuous-rolling machine, and giving set values of initial tension and reduction of each machine frame, then separately finding skid factor and nick integrated judgment index value of each machine frame, and finding target function set for rolling rule optimization; then judging whether the target function meets Bauer' conditions, and finding the optimum tension and reduction set values. And it intrudes nick judgment concept, considers all machine frames of the cold continuous-rolling machine as a whole, and uses nick prevention and control as target to make on-line optimization settings on rolling rules, and can largely increase rolling speed and improve steel strip surface quality, and largely reduce huge economic losses of enterprises on the premise of assuring quality of products.

The invention discloses a production method for a double-zero aluminum foil. The production method includes subjecting an aluminum-alloy molten mass to cast rolling to produce a cast rolling coil with the thickness of 6.5-8.0mm after degassing and deslagging, subjecting the cast rolling coil to first cold rolling to produce an aluminum coil with the thickness of 2.0-3.0mm, performing first heat treatment on the aluminum coil subjected to the first cold rolling at the temperature of 450-550 DEG C for 15-20 hours, subjecting the aluminum coil subjected to the first heat treatment to second cold rolling to produce an aluminum coil with the thickness of 0.6-0.8mm, and performing second heat treatment on the aluminum coil subjected to the second cold rolling at the temperature of 300-380 DEG C for 6-12 hours; subjecting the aluminum coil subjected to the second heat treatment to third cold rolling to produce an aluminum coil with the thickness of 0.05-0.1mm, heating the aluminum coil to the aluminum-foil recrystallization critical temperature of 250-310 DEG C, keeping the aluminum coil at the temperature for 5-10 hours, and subjecting an aluminum foil to fourth cold rolling to produce the double-zero aluminum foil with the thickness of 0.006-0.009mm. The double-zero aluminum foil produced by the production method has tensile strength of more than 95Mpa, ductility of more than 3.1%, small blank grain size, few surface stripes, few needle holes and stable quality.

A linear guide device comprises a rail, at least a slide member and multiple rows of rolling elements. The slide member comprises a rigid body; a bottom frame; a pair of end caps and a pair of reinforce plates. The rail and rigid body provide multiple rows of raceways opposed for the rolling elements. The bottom frame contains a plurality of lubricant reservoirs with lubrication pads inside and directly outstretch from the openings of said lubricant reservoirs to contact with the rolling elements in the raceway zone to supply lubricant on the rolling elements continuously. There are passages or tubes, having lubricating string inside, connecting the extending lubricant reservoirs. Two reinforce plates, each having two extending plates folded and stretched to the bottom of the two leg portions of the rigid body, and are attached on two end caps.

The invention discloses a cable aluminum foil and a production method thereof. The cable aluminum foil comprises components of the following weight percent: 0.79 to 0.83 percent of Si, 0.22 to 0.26 percent of Fe, at most 0.1 percent of Cu, at most 0.2 percent of Mn, at most 0.05 percent of Mg, at most 0.05 percent of Cr, at most 0.1 percent of Zn, at most 0.08 percent of Ti, at most 0.05 percent of single impurity content, at most 0.15 percent of the total content of impurities and Al as the rest, wherein the content summation of the Fe and the Si in weight percent is less than 1.1 percent. The production method comprises the production technical processes: burdening, melting, component analysis, feeding dilution, powder injection refining, N2 refining, on-line refining outside a furnace, casting, casting plate type detection, blank winding, cold rolling, vertical cutting and splitting, finished product annealing, detection, packing, storage and leaving a factory. The cable aluminum foil has good mechanical property, the tensile strength is from 90 to 105MPa, the extension rate is greater than 25 percent, the production requirement has larger development potential, and the enterprise benefit and the social benefit can be obviously increased.

A method and device for measuring and adjusting the evenness and/or tension of a stainless steel strip (1) during cold rolling in a 4-roll stand (2) provided with at least one control loop (4) comprising several actuators (3), resulting in more precise measurement and adjustment due to the fact that an evenness defect (10) is determined by comparing a tension vector (8) with a predefined reference curve (9), whereupon the characteristic of the evenness defect (10) along the width of the strip is broken down into proportional tension vectors (8) in an analysis building block (11) in a mathematically approximated manner and the evenness defect proportions (C1...Cx) determined by real numerical values are supplied to respectively associated control modules (12a; 12b) for actuation of the respective actuator (3).

The invention relates to a rolling method of high-grade non-oriented silicon steel. Through four-time rolling, reduction ratios are increased so as to increase deformation heat of strip steel, so thata rolling temperature of the strip steel is increased, and a temperature of an incoming material is controlled to reach 55 DEG C to 60 DEG C; the scheme of the four-time reduction ratios comprises that the reduction ratio for the first time is 37 percent to 41 percent, the reduction ratio for the second time is 36 percent to 39 percent, and the reduction ratio for the third time is 34 percent to37 percent; rolling force for the four times is respectively controlled as follows: 4750kN to 5000kN, 4600kN to 5000kN, 4400kN to 4600kN and 3900kN to 4200kN; and unit tension adjustment on rolling atthe previous two times is carried out. The rolling method of the high-grade non-oriented silicon steel disclosed by the invention has the advantages that the rolling times are simplified, the trend of edge cracking of an edge part of the strip steel is reduced, and production of double -rib wave is reduced.

The invention relates to an aluminum cold-rolling mill rolling schedule generation method based on material states and parameter curves. The method includes determining intermediate annealing process parameters in a rolling schedule in terms of a material finished product state according to raw materials and finished product parameter requirements of aluminum rolls, determining process parameters such as the times of rolling passes, thickness of each pass and rolling speed according to the parameter curves, then calculating rolling schedule control parameters according to a mathematical model, and checking and correcting according to mechanical parameters of a unit so as to automatically generate the rolling schedule of the aluminum rolls. According to the method, after finished product definition and parameter curves of a certain material are determined according to process requirements and empirical data, automatic rolling schedule generation aiming for aluminum rolls made of the material and in various dimensions can be realized, maintenance and extension according to materials are facilitated, and a systematized rolling schedule generation technique is formed.

A method for manufacturing copper (or Cu-alloy) tube includes such steps as removing surficial oxide layer from raw tube, high-speed rolling by a 4-roller rolling mill, fast cooling by a two-pass cooler, and straight cold drawing.

The invention provides a cold continuous rolling mill starting control optimization method and device. The method comprises the following steps that a first rolling force parameter corresponding to strip steel with the target thickness is set for a rolling mill according to the strip steel with the target thickness needing to be rolled; rolling mill starting is carried out according to a preset initial rolling force parameter and the first rolling force parameter; according to tension data between adjacent machine frames of the rolling mill and a preset first judgment condition, a second rolling force parameter is obtained; when the thickness of the strip steel at an outlet of each machine frame in the rolling mill meets a second judgment condition, the rolling speed of the rolling mill isincreased; and then, the roll bending force of a working roller and a middle roller of the tail machine frame of the rolling mill is adjusted until the deviation between the thickness of the strip steel at the outlet of the tail machine frame and the target thickness meets a preset error condition, and a final rolling force parameter is obtained according to the second rolling force parameter andthe parameter which is being used by the rolling mill. According to the method and the device, the control precision of the rolling mill can be greatly improved, and the success rate of starting rawmaterial plates of new type of steel is improved.

The invention discloses a rolling method for a specially-shaped alloy steel ring part with a section containing a suddenly-changing curve. The rolling method for the specially-shaped alloy steel ringpart with the section containing the suddenly-changing curve comprises the following steps: blanking to obtain an initial blank; preparing a ring rolling blank from the initial blank which reaches a forging temperature requirement; and placing the ring rolling blank in a ring rolling machine, and carrying out ring rolling forming to obtain a forged ring part with the specially-shaped section. Therolling method for the specially-shaped alloy steel ring part with the section containing the suddenly-changing curve is capable of realizing rolling for the specially-shaped ring part with the section containing the suddenly-changing curve; the deformation force needed by the specially-shaped ring rolling is greatly reduced, and the production cost is lowered; the rolling achieves high internal quality and close internal structure, crystalline grains are fine, fibers are arrayed in the circumferential direction, the mechanical strength and the wear resistance are obviously improved, and the fatigue life is obviously prolonged; high product accuracy, a low machining amount and a high material utilization rate are achieved; high production efficiency and a high rolling speed are achieved; the defects of incomplete filling, fishtail pits, dimension deviation and the like in the ring rolling process are solved; and the method is capable of realizing the most economic and efficient batch production as one-process rolling forming.

A duet power-driven window shade comprises a controlling device to receive an external controlling signal, which is then analyzed, determined and compared with a preset value in a memory unit of the controlling device. A driving signal is output via a processing unit according to a comparing result. A power source thence brings convolutions of a first covering sheet and a second covering sheet in sequence or concurrently for increasing the rolling speed and the using convenience and allowing the connecting members connected to the covering sheets to be efficiently rolled up without entanglement so that the duet power-driven window shade is smoothly operated.

A landslide protection device disclosed by the present invention includes a mountain body and a roadbed. The roadbed is fixedly disposed at the upper end of the mountain body. Cavities are formed in the roadbed to penetrate left and right. Rolling stones can roll down the mountain through the cavity to prevent rolling stones from falling on the upper end surface of the roadbed to block traffic. The cavity is provided with a buffer device. The present invention is arranged in the roadbed in the area where the frequency of landslides is high. It can avoid traffic congestion caused by falling rocks directly on the road. Because the mountain has a certain slope, the speed of the rolling rocks is faster. When the rocks are cleared, the rolling speed is slowed down and the device is restored to the initial state after the landslides And can automatically clear the rolling stones that fell on the road.

The invention discloses a round steel all-purpose method rolling technology, comprising the steps that raw blanks are rolled into round blanks with middle fracture surfaces in a rough rolling unit; and the round blanks with the middle fracture surfaces are subjected to all-purpose method continuous rolling deformation or all-purpose method reciprocating rolling deformation for no less than two passes to be rolled into round steel products. By using the round steel all-purpose method rolling technology, the product size precision can be obviously improved, the problem that the out-of-roundness of the round steel products is severer is solved, the production specification ranges of smooth round bars and deformed steel bars are widened, the deformation of each pass is improved, the rolling deformation pass is reduced, the production efficiency is improved, the surface quality of rolled round steel is improved, the internal stress of rolled pieces after rolling is improved, the product yield is improved, and the rolling load, the production energy consumption and the production cost are reduced.

The invention discloses a candy forming machine, comprising a compression roller mechanism, a shaping mechanism and a forming pressing wheel mechanism which are arranged sequentially from an input end of a conveying table to an output end of the conveying table, wherein the compression roller mechanism comprises an upper compression roller and a lower compression roller of which the axial directions are both vertical to the conveying direction of the conveying table; a feeding end of the upper compression roller and a feeding end of the lower compression roller are respectively provided with a feeding mechanism; and the side of the upper compression roller and the side of the lower compression roller are respectively provided with an oiling mechanism. According to the candy forming machine, the oiling mechanisms are arranged at the sides of the upper compression roller and the lower compression roller, so that a uniform and thin oil layer is coated on each of the upper compression roller and the lower compression roller, so as to realize automatic oiling on the surface of massecuite; after the oiled massecuite is processed by the shaping mechanism, the required thickness of the massecuite can be realized; and then the massecuite is formed once through the forming pressing wheel mechanism, so that the massecuite is made to be small candies. The candy forming machine has high rolling speed and high rolling efficiency.

The present invention relates to hot-rolled pipe elongation technique. Said technique can be directly used in skew-rolled pipe elongation equipment. Said invention provides a new geometrical model of pipe material elongator. It is basically characterized by that its rolls are arranged according to convergent form, namely, the cone angle Psi is less than O, in the coordinate system oxyz, the offset amount yo is not equal to O, and its feed angle beta and the offset amount yo can not be identical in size. Besides, said invention also provides four sets of equations, and utilizes them to make optimization calculation so as to obtain the invented geometrical model of skew-rolled pipe material elongator.

The invention relates to a rolling mill (1) for producing rolled rolling stock (G), a machine-readable program code (9), a storage medium (10), a control and/or regulation device (8) for a rolling mill (1) for producing rolled rolling stock (G), and a method for producing rolling stock (G) which was rolled in a rolling train (2) of a rolling mill (1), in particular a continuous casting and rolling mill, wherein the rolling mill (1) is operated in a continuous manner by means of integrally forming the rolling stock during scheduled operation from a supply device (6, 6') which supplies the rolling stock to the rolling mill (1), in particular a casting device (6) and/or a winding device (6') for rolling stock, to at least one finishing rolling train (2) that is arranged downstream of the rolling stock supply device (6, 6'), as viewed in a mass flow direction, by means of guiding the rolling stock (G) into the finishing rolling train (2) in a continuous manner and rolling it to form a first outflow product (A) in the finishing rolling train (2) in a continuous manner. The operation of the rolling mill (1) is monitored for the occurrence of a deviation from the scheduled operation of the rolling mill (2) that influences the rolling process, wherein in case of a deviation measures are taken to examine (100, 101) whether a second outflow product (A*), which is different from the first outflow product, can still be produced (102) considering the deviation. If the second outflow product cannot be produced, the operation of the rolling mill (1) is altered from a continuous operation to a discontinuous operation (106), whereby means can be provided for reducing production failures caused by undesired process deviations in a rolling mill.

A magnesium hot rolling mill system including a rolling mill having at least two work rolls for rolling of magnesium sheet or plate, a hot coiler positioned on either side of the rolling mill for heating and maintaining a desired temperature of the magnesium sheet or plate, active thermal roller tables, a mill drive system for independently driving the work rolls for asymmetrical rolling of the magnesium sheet and a warm coil loading and payoff station.