1506results about "Guiding/positioning/aligning arrangements" patented technology

The invention relate to a control technique of the rolling process of a rolling steel. The invention discloses a control method of a rough rolling intermediate billet camber. The control method combines a position control with a pressure control; in a multi-pass rolling of the positive-pass and reverse-pass of a roughing mill, the camber generation of the intermediate billet is restricted. The control method of the invention can reduce the additional value of the openness of a side guide plate, leads the flexible deformation of the intermediate billet between the inlet and the outlet of the roughing mill in the horizontal direction to be restricted by the side guide plate, reduces the camber of the intermediate billet, and prevents the severe abrasion which is caused by the long-term contact of the side guide plate and the intermediate billet.

The invention discloses a CCD-strip-based automatic aiming CPC photoelectric detection system, including the detection sensor and the light source, and the light source using rectangular array of 700~900nm wavelength infrared light-emitting diodes, and the detection sensor including optical lens, narrowband filters, linear array CCD and laser alignment, also including CCD driver circuit and detection processor. The detection method of the system uses the fixed installation positive exposure, and the light of the light source through the both sides of the detected strip, and respectively received by the left and right detection sensors, and when the detected strip moving left and right, the photosensitive pixels of the linear array CCD generates the strip edge location-related changes, and outputs the corresponding strip edge location signal, and respectively sends into the left and right detection processor and CPC controller for subtraction calculation, to determine whether the location of the strip departs from the center line of the machine, and the departure distance. The system has the features of high accuracy detection, board detection range, fast response speed, good stability, and anti-disturbance ability.

The invention relates to a method suitable for width measurement and centering of a rough rolling slab in a hot rolling mill, which belongs to the technical filed of steeling rolling computer control. The method mainly comprises the following steps of: 1, controlling a left guide plate and a right guide plate to arrive holding positions; 2, controlling the left guide plate and the right guide plate to move towards the direction of a rolling central line synchronously until contacting and patting a blank plate; 3, when the contact pressures of the left guide plate and the right guide plate, and the blank plate reach a predetermined value; recording the distance between the left guide plate and the right guide plate and the blank plate; 4, taking the recorded distance value as an actual width measurement value of the blank plate which is used for performing on-line control on rolling parts including a vertical roller; and 5, controlling the left guide plate and the right guide plate to return to guide positions. By adopting the method of the invention, original side plates which only have a guiding effect can play a role in patting the blank plate and ensuring the blank plate to be centered, and can be used as a detection device for measuring the actual width of the blank plate accurately, so that an error action caused by data error is avoided and the performance of equipment is remarkably enhanced without adding equipment investment hardly.

A modular rolling mill comprises a plurality of separate rolling units arranged along a mill pass line. Each rolling unit includes at least two pairs of work rolls defining oval and round roll passes and carried on roll shafts that are staggered 90° with respect to each other. The rolling units contain intermediate drive trains configured to connect the roll shafts to parallel input shafts projecting to a first side of the pass line from the respective rolling units. A single driven line shaft is parallel to and on the first side of the pass line. Output shafts are mechanically coupled to the line shaft by bevel gear sets. The output shafts project laterally from the line shaft towards the pass line and are connected by separable couplings to the input shafts of the rolling units.

An offset correcting method and apparatus for band steel features that the band steel is moving in such manner that it is tightly close to a cylindrical roller by a certain wrap angle, and said cylindrical roller is composed of an external hollow cylindrical roller made of non-magnetic material and an internal cylindrical roller able to generate spiral magnetic field, which can magnetically drive the band steel to move. Regulating the direction of spiral magnetic field can correct the offset of band steel.

The invention relates to a design method based on a machine vision inspection centring control device; a line scanning sensor senses wide long banding surfaces, and the result is output to an image acquisition module; LED linear light source generates convergent linear light which is irradiated on the object to be inspected, and surface condition is sent to the line scanning sensor; the image acquisition module carries out bottom layer treatment conversion on input signals of the line scanning sensor; a PCIe bus image transmission module provides point-to-point independent bandwidth bus channels for two routes of data of the image acquisition module; a machine vision margin automatically positioning software carries out positioning tracking on belting margin and calculates belt material centre deviation value; a digital controller determines parameters of the digital controller according to signals introduced by an interface module, and control signals are output to the interface module; the interface module inputs the signals of a system to the digital controller, and the result is output to a hydraulic servo system; the hydraulic servo system adjusts load moving speed according to the control signals output by the interface module; and a power unit supplies stressor.

The present invention relates to auxiliary iron and steel producing apparatus technology, and is especially automatic coil bearer locating apparatus and method for steel rolling production line and post-treatment line. The apparatus includes bearing seat, elevating mechanism, running mechanism, steel coil position detecting element, apparatus stroke detecting and locating control system. The present invention makes it possible to locate steel coil bogie or other conveying toll relatively to the coil accurately. The present invention is simple, smart and reliable.

The invention relates to a vertical ring rolling mill. The vertical ring rolling mill capable of realizing on-line measurement control comprises a rack, a rolling wheel mechanism, a measuring roll mechanism, a guide roll mechanism, a core roll mechanism and an unloading device. The vertical ring rolling mill is characterized by also comprising an on-line measurement control device; the on-line measurement control device comprises a displacement sensor group, a first displacement measurement sensor is arranged on a first elastic follow-up device of the measuring roll mechanism, and a second displacement measurement sensor is arranged on a slide block of the rolling wheel mechanism; and the measuring roll mechanism comprises the first elastic follow-up device, a measuring roll, a first push rod, a first bearing, a first shaft and a first bracket, wherein the measuring roll is fixed on the first shaft by the first bearing, the first shaft is fixed on the first bracket, the first bracket is fixed on the first push rod, and the first push rod is arranged on the first elastic follow-up device. The vertical ring rolling mill provides a condition for realizing on-line measurement control of outside diameter sizes of ring blanks, and has the advantages of manpower and material economization, high part molding precision, small post machining amount, low rejection rate and the like.

A high-boron cast alloy guide and its heat treatment method pertain to the technical field of steel rolling. The chemical composition of the guide provided by the present invention (mass fraction, %): C 0.25-0.45, Cr 12.0-15.0, B 1.0-2.5, Mo 0.5-0.8, Mn 1.8-2.5, Al 0.10-0.30, Re 0.08-0.20, Mg 0.04-0.08, V 0.05-0.10, N 0.01-0.03, Ti 0.10-0.20, Nb 0.10-0.20, 0.25<=Ti+Nb<=0.35, Si<1.0, S<0.05, P<0.05, and Fe as the rest. Through smelting, casting, oil quenching, tempering and other steps, the present invention prepares a high-boron cast alloy guide with high hardness and strength, desirable tenacity and wear resistance, and low cost.

The invention relates to the technical field of hot milling, particularly to a calibration method and device of the centering precision of side guide plates of a finishing mill. The method comprises the following steps: measuring a distance A between the inner side of a first guide plate and the inner side of a first memorial arch; measuring a distance B between the inner side of a second guide plate and the inner side of a second memorial arch; calculating the value of A-B; and calibrating the opening value for the first guide plate, and the opening value for the second guide plate. The device comprises first distance measuring equipment, second distance measuring equipment and treating equipment, wherein the first distance measuring equipment is connected with the treating equipment; the second distance measuring equipment is connected with the treating equipment; the treating equipment is used for calculating the value of A- B, and calibrating the opening value for the first guide plate, and the opening value for the second guide plate. Through the adoption of the calibration method and device of the centering precision of the side guide plates of the finishing mill, provided by the invention, the accurate calibration of the first guide plate and the accurate calibration of the second guide plate are realized, so that the actual centering precision of the side guide plates meets site production requirements, and the stability of strip threading in finishing milling and tail throwing in finishing milling is improved; therefore, milling accidents are avoided.

The invention discloses a steel coil height centering device and a method thereof. The device is applied to height centering of a steel coil and the core shaft of an uncoiling machine during coiling, and comprises a coiling trolley; a saddle for mounting a steel coil, a lifting device for adjusting the height of the steel coil, a lifting encoder for recording the height of the steel coil lifted by the lifting device and a limiter for limiting a mechanical zero point are arranged on the coil trolley; upright columns are arranged on the two sides of the moving rail of the coiling trolley; a positioning light source for emitting a concentrated light beam is arranged on the upright column on one side, while a light receiving device for receiving the light emitted by the positioning light source is arranged on the upright column on the other side; the positioning light source and the light receiving device are located at the same height and the connecting line of the positioning light source and the light receiving device is perpendicular to the moving rail. The steel coil height centering method of the device is applied to centering in the axial direction of the steel coil, and the height difference between the upper edge and the lower edge of the inner diameter can be directly measured to determine the center of the steel coil. The steel coil height centering device is high in centering accuracy, stable and reliable and simple and convenient to operate.

The invention discloses a new production process of a large seamless steel pipe. The process comprises the following steps: pipe billets are preheated to the temperature of 1050-1290 DEG C by a heating furnace, and delivered to a three-roll skew rolling piercing mill for piercing by a skew roll table conveying mechanism to finish diameter expansion and wall reduction rolling, the maximal ratio of diameter to wall D/S is over 32, and hollow billets are produced; the hollow billets are delivered to a three-roll skew rolling elongating finishing mill by a shift oblique orbit conveying mechanism to finish diameter expansion and wall reduction rolling or diameter reduction and wall reduction rolling, and the pierced billets are rolled, straightened, cropped end, cut to length, defect are detected, and the finished products are obtained after passing inspections. The new production process also perfects and improves the conventional three-roll skew rolling seamless steel pipe process, solves the problems of not rolling thin walls and great extension in the three-roll skew rolling process, the diameter expansion and wall reduction rolling can be carried out, and the diameter reduction and wall reduction rolling can be carried out. The new production process is especially suitable for rolling large and oversized seamless steel pipes (Phi is 500-2000mm), the ratio of single reduced diameter and expanded diameter is more than 30%, the reduced wall diameter is more than 70%, and the reduced wall thickness is 5-7 times of that of a longitudinal pipe rolling mill.

The present invention is composite SiC guide roller and its making process, and features that the composite SiC guide roller has a steel base body and a surface composite material layer of material comprising SiC 5-40 %, C 0.2-0.6 %, Cr 0-3.0 %, Mo 0-2.0 %, Mn 0-2.0 %, other metal and non-metal elements not more than 5 %, and Fe for the rest. The composite material is coated to the surface of the steel base body with powder, wire or rod of the composite material and through hot spraying, hot spray welding or laser depositing and combined with the steel base body. The composite SiC guide roller of the present invention has high hardness, high wear resistance, low brittleness, capacity of being heat -treated, machinability, low cost, high performance/cost rate and other advantages.

The present invention relates to a light-size round steel continuous-rolling method. It adopts a box-square-oval-round-oval-round system and makes the blank undergo the process of continuous rolling treatment by means of alternative six stands of vertical mills and horizontal mills so as to obtain the finished product, and before intermediate round pass stand and round former stand an inlet guide wheel is set.

The invention discloses a method for preparing a composite antiwear guide plate, which comprises the following steps: alloy dust core bars are bound into bundles and arranged in a guide plate casting mould cavity, and the volume of the alloy dust core bars accounts for 20 to 60 percent of the total volume of the guide plate; molten matrix metal is cast into the guide plate casting mould cavity, the alloy dust core bars are melted and dissolved under the heat effect of the matrix metal, a great number of alloy elements and the molten matrix metal generate metallurgical combination reaction so as to generate a highly dispersed alloy structure on the original position; and finally the alloy structure is cooled and solidified, and the bar-shaped hard phase is metallurgically and transitionally combined into a whole with the matrix metal, thereby preparing the composite guide plate which takes the high-strength and high-ductility metal as the matrix and contains a certain number of metallurgically combined bar-shaped hard points. The composite anti-wear guide plate has high strength and high ductility of the matrix metal and high hardness and high wear resistance of the hard phase, can simultaneously bear high pressure and strong wear, and has the characteristics of long service life, low price, simple preparation and so on.

The invention discloses a method for rolling large-sized round steel, which comprises the following steps: clamping the round casting blank by a manipulator and a foreplate with which the manipulator is provided; loading the casting blank in a roughing mill and turning the casting blank over every 1-3 passes of rolling for 7-11 reduction passes; then, loading the steel billet in a continuous mill and rolling for 2-6 reduction passes; wherein the pass schedule of the roughing mill is a box-box pass type; the pass schedule of the continuous mill is an ellipse-round-ellipse-round pass type; the continuous mill has an arrangement form alternating between horizontal and vertical arrangements; and the continuous mill allows a rectangular billet with the height smaller than 260mm and the width smaller than 280mm to enter. The method has saving passes and few rolling passes without tapping during the rolling process, therefore, the method has the advantages of high rolling efficiency, low rolling cost and saving energy, and more prominently, the quality of finished round steel is good.

The invention discloses a cold stripe mill deviation and shape automatic control method. Stripe shape meters are arranged at the inlet and outlet of a cold mill, the shape of stripe material can be detected before and after cold milling, the shape of the milled stripe material and the deviation amount are adopted as a comprehensive control target, the mill shape adjusting mechanism is adjusted automatically, the deviation between the shape of the milled stripe material and the target shape and the stripe material deviation amount are minimized comprehensively, owing to the real-time detection of the stripe shape meters, real-time calculation of a deviation and stripe shape automatic control unit, adjusting amount of a stripe shape control and output executing mechanism, the deviation occurrence rate in the stripe material cold milling process is decreased effectively, and the unit production capacity is improved; meanwhile, compared with the traditional manual controlling and adjusting manner, the stripe shape control accuracy is guaranteed, and the stripe product quality is improved.

The invention relates to a method and a device used for preventing the rolling scratch of the hot rolling stainless steel belt. The method is that when in rolling, the compressed air is blown out from a row of nozzles arranged by the lightening vertical hole of the outlet guide decking of the last hot finisher, the extrusive airflow forms an air cushion which blows and floats the band steel, thereby causing the lower surface of the band steel to be separated from the nonmetal decking fixed on the outlet guide decking. The device comprises an outlet guide beam arranged on an outlet guide frame of the last hot finisher, wherein, the outlet guide beam is provided with a transverse air pipe, and the transverse air pipe is provided with a plurality of vertical nozzles, the air outlet ends of the nozzles stretch into the lightening vertical hole of a vertical grid frame of a lower guide plate body of the outlet guide decking; the lower part of the transverse air pipe is fixed with a vertical air pipe, and the lower end of the vertical air pipe is fixed with a bending pipe, the bending pipe is connected with a corrugated pipe, the corrugated pipe is connected with a fixed pipe, and the fixed pipe is connected with a blower. The method and the device used for preventing the rolling scratch of the hot rolling stainless steel belt thoroughly stop the scratch of the lower surface of the band steel by the guide plate.

The present invention discloses the rolling process of hot rolled steel sheet. In the operation of the rolling process, video cameras are installed in the frame and display terminal is set in the rolling operation desk. During rolling, deviation trend of the rolled band is obtained through observing the positions of the band head, middle and tail in the frame and deviation rectifying operation is performed according to the deviation trend of the rolled band. The method can decrease the thickness of rolled band and raise the quality of the rolled product.

The invention relates to a method for the vibration of band steel in high-speed rolling process, wherein said method is characterized in that: the first frame inlet of cold rolling machine is arranged with three-roller stabilizer which comprise left low roller, right low roller and upper middle roller; the upper middle roller is above the left and right low rollers, and above the rolling line; the left and right low rollers are under the rolling line; the band steel is through between the upper middle roller and left low roller and right low roller, the upper middle roller is lifted by hydraulic cylinder; when in normal rolling, the upper middle roller compresses the band steel; the last frame outlet of machine has single-roller vibration resistor; when in normal rolling, the vibration-resistant roller extends out driven by the hydraulic cylinder, to tension the bane steel.

A product handling system comprises a support structure defining a pair of stationary inverted first channels with downwardly facing open sides. At least one cylindrical drum is interposed between each of the first channels and an underlying receiver. The drums are rotatable about their axes, with their surfaces arranged to close the open sides of the respective first channels. The drum surfaces are interrupted by second channels, with the first and second channels and the drum axes being arranged in a parallel relationship. Successive product lengths are alternately delivered longitudinally into one and then the other of the first channels. The drums are rotated about their axes resulting in the thus delivered product lengths being sequentially: (i) temporarily retained in the first channels by the rotating drum surfaces; (ii) deposited from the first channels into the second channels when the second channels rotate into radial alignment and communication with the first channels and (iii) downwardly deposited from the second channels to the receiver when the second channels rotate to discharge positions over the underlying receiver.

The invention discloses a method for strip head correction in the continuous rolling strip threading process and relates to the technical field of metal pressure processing. The method comprises a step (A) of setting sampling time points of strip heads reaching each detection position; a step (B) of judging and calculating the strip head deflection degree and the deflection direction by performing imaging collection and processing on edge curves on the two sides of the strip heads when the strip heads reach the detection position of a current to-be-rolled machine frame in the strip threading process; a step (C) of performing on-line adjustment on roll gap differences of the double sides of a currently rolled machine frame; a step (D) of presetting roll gap differences of the double sides of a follow-up machine frame; a step (E) of repeating the step (C) and the step (D) until a profile gaugemeter detects the strip heads, and performing on-line adjustment on roll gap differences of the double sides of a finished product machine frame through the profile curves of two side edges of the strip heads detected by the multichannel profile gaugemeter. According to the method, the deflection of the heads in continuous rolling strip threading process of the strips can be timely found and adjusted so as to avoid yield reduction or strip threading failure caused by the deflection.

The invention discloses a metal sheet machining centering device and a metal sheet machining centering method. The metal sheet machining centering device comprises two side guide plates, pressure relays, a metal detector, a laser tachometer and the like. The two side guide plates are symmetrical with each other along a straight center line and are parallelly opposite to each other, the pressure relays are arranged on the side guide plates, each side guide plate is fixedly mounted at one end of a movable support, each movable support is connected with a hydraulic cylinder with a displacement sensor, the displacement sensor of each hydraulic cylinder is electrically connected with a controller, and the metal detector is used for detecting the length of a metal sheet. The metal sheet machining centering method includes a step of enabling the two side guide plates to work simultaneously to respectively push and center the metal sheet and a step of enabling the two side guide plates to individually work to respectively push and center the metal sheet according to the thickness and the length of the metal sheet. Compared with the prior art, the metal sheet machining centering device and the metal sheet machining centering method have the advantage that the problem that metal sheets with low deformation resistance or thin metal sheets cannot be centered by an existing centering device is solved.