131results about "Flexible work arrangments" patented technology

According to the high-quality high-speed wire rolling method for the low-alloy high-speed steel wire rod based on continuous casting forming, gradient heating is conducted through the step type heating furnace, preheating of a continuous casting blank is uniform, and phase change stress is reduced. The initial rolling temperature is set and controlled to be 1060-1100 DEG C, the finish rolling temperature is controlled to be 950-1050 DEG C, the spinning temperature is controlled to be 980-1030 DEG C, and the highest rolling speed is 25 m / s. And after rough rolling, induction heating temperature compensation is carried out to increase the surface temperature of the blank, the temperature is set to be 1000-1040 DEG C, the temperature compensation time is controlled to be 10-20 s, and surface cracks and head wind caused by too low temperature are prevented. And closing the cover plate after spinning, adopting heat collection, immediately entering a slow cooling tunnel furnace for furnace cooling after doffing, and discharging for annealing after 48 hours or longer. A continuous casting technology is used for replacing a traditional die casting technology, controlled rolling and controlled cooling in the rolling process are matched, composition segregation is remarkably reduced, the core quality is improved, carbides are effectively refined, the uniformity of products is guaranteed, the production efficiency is improved, the production cost is reduced, and the influence on the environment is reduced; and a new process and a new route are provided for producing the high-quality low-alloy high-speed steel wire rod.

The utility model provides a vertical loop rack and a vertical loop, and belongs to the field of steel rolling production equipment, a window is arranged on the operation side of a vertical loop rack body, and a hinge door is arranged at the window, so that waste steel in the rack is convenient to clean, the accident handling time is shortened, and the production efficiency is improved; when the high-speed wire rod rolling mill works normally, the first opening and closing door and the second opening and closing door are kept in a connected state and are fixed to the vertical loop rack body, and normal production is not affected; when a steel clamping accident occurs, only the first fixing mechanism and the second fixing mechanism need to be dismantled and the connection state between the first opening and closing door and the second opening and closing door needs to be released, so that the first opening and closing door and the second opening and closing door can rotate around the joint with the vertical loop rack body through the first connecting mechanism and the second connecting mechanism respectively; therefore, opening and closing between the first opening and closing door and the second opening and closing door are achieved, accidents occurring in the vertical loop rack body can be handled conveniently, and the handling efficiency is high.

The invention discloses a novel process for realizing online softening and improving cold heading performance of SCM435 series cold heading steel, and relates to the technical field of cold heading steel processing. The invention discloses a novel process for realizing online softening and improving the cold heading performance of SCM435 series cold heading steel. According to the method, S1, steel billet continuous casting forming, S2, steel billet precise heating, S3, low-temperature rolling molding, S4, wire rod standard spinning, S5, stelmor cooling and S6, heat preservation vestibule slow cooling are carried out, the uniformity of the process performance is remarkably improved, by innovatively optimizing the spinning coefficient and the roller way speed, it is fundamentally guaranteed that the disc shape is neat, the heat dissipation conditions of all positions of the wire rod in a slow cooling vestibule are consistent, and the heat dissipation efficiency of the wire rod is improved. Therefore, uniform transformation of a whole-roll structure and a same-circle structure is achieved, the consistency of cold heading performance is greatly improved, the cracking risk in the cold heading process is effectively reduced, the technology is remarkable in energy-saving and consumption-reducing effect, rolling waste heat is fully utilized for on-line softening, the traditional off-line reheating and annealing procedure is completely omitted, and energy consumption can be saved by about 30% or above.

The utility model relates to the technical field of steel production, and provides a wire and bar roller box eccentric sleeve axial adjusting mechanism which comprises a supporting piece, an adjusting assembly and a sliding key, the supporting piece is arranged outside a roller box, the adjusting assembly comprises a connecting piece, a rotating piece and a locking piece, the connecting piece is installed in a roller box hole, the rotating piece is installed on the supporting piece, and the sliding key is arranged on the rotating piece. The rotating piece is fixedly connected with the connecting piece, the locking piece is used for locking rotation of the rotating piece, an eccentric groove is formed in the connecting piece, and one end of the sliding key is arranged in the eccentric groove. The end, close to the eccentric bushing key groove, of the sliding key is designed to be of the rectangular structure, the contact area of the sliding key and the eccentric bushing key groove is increased, abrasion of the sliding key and the eccentric bushing key groove is reduced, the service life of the sliding key and the eccentric bushing is prolonged, the overhaul frequency and the labor intensity of workers are reduced, meanwhile, the cost of spare parts is saved, and the production cost is reduced. And due to the design of the rectangular structure at the end part of the sliding key, the axial adjustment eccentricity is synchronously increased, and the axial adjustment amplitude of the roller box eccentric bushing is increased.

The present application relates to a kind of hot galvanizing production line finishing machine roll replacement reduces the method of degraded product, belong to hot galvanizing continuous production process technical field.The technical scheme is: according to the following steps to operate: step one: reduce process section one and process section two strip speed;Step two: when strip weld reaches finishing machine outlet, process section two strip speed reduces to 0 m / min;Step three: replace finishing machine work roll, and flushing is carried out to the work roll after replacement;Step four: after finishing machine work roll flushing is completed, process section two speed strip starts to run with the minimum strip running speed specified by finishing machine, tension leveler and roll coater, when finishing machine, tension leveler and roll coater start finishing, tension leveling and roll coating, process section two strip speed is gradually increased, and intermediate looper is released, until process section one and process section two restore normal production speed.The beneficial effects of the present application are: it can reduce the degraded product of strip due to not finishing when finishing machine roll replacement.

This utility model discloses a support frame base for a front guide for the pinch rolls of a high-speed wire rod mill, comprising a base plate, a connecting plate, and a top plate. By providing limiting devices on two support frames, the front guide column can be fixed by controlling the studs. Combined with the operation of the control screw, the fixing block secures the front guide column. This multi-faceted fixation ensures a robust fixation of the front guide column. Various inner diameter front guides can be designed according to the specifications of the rolled products, while maintaining a consistent shape. This ensures that the same support frame base can accommodate the installation and positioning of front guides and support frames with different inner diameters. It also solves the problem of non-standard distances between the pinch rolls and the cooling guide grooves in the water tank. Furthermore, the structure is simple and easy to assemble and disassemble, thereby reducing replacement and disassembly time, increasing production line operating rate, and reducing the workload of operators.

The invention relates to a digital hot continuous rolling loop evaluation method. The method comprises the steps that the complete control period of a loop is divided into a steady-state control stage, a loop rising control stage and a loop falling control stage; establishing evaluation parameters according to the working parameters in the process of the steady state control stage, the loop rising control stage and the loop falling control stage; setting a reasonable range and an optimal range for each evaluation parameter, and mapping each evaluation parameter into a single score through a preset scoring function; and obtaining the loop control quality standard according to all the single scores. According to the method, comprehensive digital evaluation is formed by decomposing, standardizing and scoring key parameters of the whole loop control process, objective evaluation, accurate management and control, fault early warning and continuous optimization of the loop control effect are achieved by utilizing the periodic trend of the comprehensive digital evaluation, and finally the out-of-control probability of the loop and production accidents are reduced.

A system for use in a rolling mill is disclosed that includes (a) a roll holder housing a plurality of rollers, and (b) a smart module coupled to the roll holder that includes (1) a power source for powering the smart module, (2) a microcontroller, (3) a motor for moving the roll holder and thereby controlling the position of the plurality of rollers based on instructions from the microcontroller, (4) one or more position sensors for detecting the position of the roll holder, and (5) a communications module that communicates with a central control computer to (i) communicate the position of the roll holder and other sensor data to the central control computer and (ii) receive instructions from the central control computer for controlling the position of the roll holder.

The present application relates to a kind of hot-rolled stainless steel annealing pickling line, including uncoiler, welding machine, deviation rectifying roller, loop, annealing furnace, pickling unit and coiler in turn along the strip running direction, and multiple groups of tension roller group and steering roller are distributed in the line, and heating device is arranged at least one of welding machine outlet, the outlet side of deviation rectifying roller, the inlet side of at least part of steering roller and the inlet side of at least part of tension roller group, to heat the strip at corresponding position to above hard brittle point temperature.The present application avoids hard brittle point temperature of strip by arranging heating device in the line and carries out fast reheat to the strip at corresponding position, especially avoids that strip is welded at hard brittle point temperature, strip steering, tension, coiling and the like, can effectively avoid weld tear, strip edge crack or strip breakage and the like, can realize high-grade strip high-speed stable operation, solve the problem that existing unit cannot normally continuous production in low temperature environment.

The utility model provides a loop side spraying structure and system, including spraying assembly, adjusting assembly, drainage assembly and base, the base is used for connecting to one side of loop structure, the base is provided with the chute, adjusting assembly is vertically and movably connected in the chute, the water outlet end of spraying assembly is arranged towards the loop structure, the drainage assembly is arranged in the chute. The spraying assembly is rotatably connected to the top of the adjusting assembly, the drainage assembly is used for being connected to the other side of the loop structure in the transverse direction and is provided with a drainage channel, and the water inlet end of the drainage channel and the water outlet end of the spraying assembly are arranged in a spaced mode in the transverse direction. In this way, the slab can be cleaned in the transverse direction of the loop, the spraying effect is improved, the spraying height and the spraying angle of the spraying assembly can be flexibly adjusted in combination with the adjusting assembly, the adaptable spraying range is expanded, and the structural adaptability is improved; and the sprayed water, foreign matters and water mist are collected in time under the action of the drainage assembly, and are drained to change the movement direction, so that the production efficiency is improved.

This invention relates to an adaptive looper cable support vehicle and a looper cable support system. The support vehicle includes a vehicle body, a support frame, and two swing frames. The support frame is equipped with two outgoing contact members for adaptive contact with the cable during its outgoing journey. Each swing frame is equipped with a state switching unit, allowing it to switch between a free state and a locked state. Each swing frame has one return contact member and one follower contact member. The two return contact members are used for adaptive contact with the cable on the locked swing frame during its return journey, while the two follower contact members are used for adaptive contact with the cable on the free swing frame. This invention utilizes the natural angle between the two cables of the looper cable in the design of the outgoing and return contact members on the support vehicle, enabling the support vehicle to automatically stop or follow the cable's movement, ensuring adaptive support position, high positioning accuracy, high operational reliability, and requiring no additional power.

The invention discloses a heating, heat preservation and slow cooling system for an air cooling line, and relates to the field of heat preservation and slow cooling of the air cooling line. The heating, heat preservation and slow cooling system for the air cooling line comprises a main support, a silking machine is arranged on the right side of the top of the main support, a coiling assembly is arranged on the main support on the left side of the silking machine, and a conveying roller way assembly is arranged on the left side of the coiling assembly; an air cooling line head roller way is arranged between the conveying roller way assembly and the coiling assembly for communication, a plurality of sets of heat preservation plates are arranged above the conveying roller way assembly, a ceramic heating unit is arranged below the heat preservation plates, a top cover is arranged above the ceramic heating unit, a plurality of sets of threading pipes are arranged above the top cover, and a plurality of sets of air coolers are communicated with the lower portion of the conveying assembly. Transfer assemblies and coil collecting stations are arranged on the front side and the rear side of the main support. Through the ceramic heating unit and the heat preservation cover, the temperature in the heat preservation cover is stably controlled within the range of 500-850 DEG C, the temperature can be accurately adjusted and controlled, the slow cooling difference problem caused by seasonal changes is solved, and the influence of environment temperature fluctuation is counteracted.

The utility model relates to the field of vertical loops, and discloses a novel dust cover of a vertical loop, which comprises a loop car, a handrail is fixedly connected to the upper surface of the loop car, a loop roller is arranged on the upper surface of the loop car, a positioning component is arranged on the rear surface of the handrail, the positioning component comprises a C-shaped track, and the C-shaped track is fixedly connected with the handrail. A supporting rod is arranged on the rear surface of the C-shaped rail, a quick release assembly is arranged on the lower surface of the supporting rod, a first positioning block is slidably connected to the upper surface of the supporting rod, a first positioning rod is hinged to the upper surface of the first positioning block, and a second positioning block is slidably connected to the upper surface of the supporting rod. According to the utility model, through the cooperation of the positioning assembly, the hand wheel is rotated to drive the bidirectional threaded rod to rotate, so that the positioning block I and the positioning block II synchronously contract or expand, and the positioning rod I and the positioning rod II can be driven to rotate and the supporting rod can be driven to move, thereby realizing the flexible storage or opening of the protective tarpaulin, and enhancing the practicability and convenience of the device.

The application provides a wire coil type control method and system, relates to the technical field of a steel rolling device, and comprises the following steps: issuing a baffle control instruction through an operation interface; sending the baffle control instruction to a programmable logic controller (PLC); the programmable logic controller (PLC) comprehensively judges the baffle control instruction, field conditions, interlocking signals and limit signals, and outputs a control signal; the output control signal is applied to a baffle execution mechanism to drive the baffle to perform opening or closing actions; position feedback on the baffle execution mechanism, limit switches, running states and fault signals are fed back to the PLC in real time to form a position and state closed loop; and the PLC uploads collected baffle actual opening degrees, running states and fault information data to an upper picture. The method and system have remarkable advantages in production efficiency, cost control and safe operation.

The application discloses a method for solving the oscillation caused by the mutual interference between a torque ring and a approaching controller in loop control, which comprises the following steps: setting an angular velocity oscillation detection counter and a time counter; starting the time counter after the loop is completed; simultaneously, detecting whether the loop oscillation is generated by a detection system in real time, and when the loop oscillation is generated, the angular velocity oscillation detection counter captures the time when the loop oscillation is generated in real time and records the time; and based on the counting results of the time counter and the angular velocity oscillation detection counter, the approaching controller is disabled in time to prevent the continuous oscillation of the torque ring and the approaching controller. The method can solve the oscillation problem caused by the mutual interference between the loop torque ring and the approaching controller.

The invention relates to a scanning detection device and method for a wire coil spinning process. The device comprises a wire, a spinning machine guide device, a spinning machine rotating head, a scanning camera, a camera mounting seat, a camera mounting support, a coil and a cooling channel. The device is simple in structure and low in manufacturing cost, parts are easy to replace, a wire is fed into the silking machine guide device through a finishing mill, is wound on the rotating head and then is thrown to the cooling channel to form a coil, and the coil moves at a constant speed through a roller way on the cooling channel. The scanning camera is mounted above the cooling channel and is vertically aligned with the coil to carry out stroboscopic scanning detection; the scanning camera detects the diameter and the number of turns of the coiling coil and monitors the coiling quality in real time according to the set frequency and the roller way speed; if the number of turns and the diameter of the coil are detected to be abnormal, the system gives an alarm in time, a production line master console makes adjustment, smooth production is ensured, automatic adjustment can be carried out in cooperation with a coil arranging device, and the automation level of a production line is improved.

The double-layer loop synchronous operation control method provides a compensation method which simultaneously considers the deviation e1(t) between the set rotating speed V0 and the actual rotating speed Vt of the loop and the deviation e2(t) between the loop amount H1t and the loop amount H2t of the two loops. Through the real-time adjustment of the loop torque, the synchronous operation of the two-layer loop can be effectively controlled, and the problems such as the asynchronization and imbalance of the loop amounts of the two loops, the tension fluctuation, the uncontrolled loop caused by the too large difference between the loop amounts of the two loops, the loss of tension and shutdown, and the scratch of the steel belt after the loss of tension of the steel belt can be solved.

The present application relates to a kind of double loop's loop quantity synchronous control method, belong to the loop pick technology field of metal rolling.The method involves two vertical loops and loop quantity synchronous regulator, and new setting loop quantity synchronous tension roller mechanism between two vertical loops;The speed of the entry strip steel and the speed of the exit strip steel of two loops are measured in real time respectively, while the actual loop quantity of two loops is measured in real time respectively, the reference speed of the tension roller of loop quantity synchronous tension roller mechanism is set according to the average value of the entry strip steel speed and the exit strip steel, the loop quantity difference of the actual loop quantity of two loops is input into loop quantity synchronous regulator, and the output value of loop quantity synchronous regulator is obtained after amplitude limiting and taking opposite processing to obtain loop quantity synchronous correction value;With reference speed plus loop quantity synchronous correction value as the real-time given speed of the tension roller of loop quantity synchronous tension roller mechanism;So as to realize the synchronous control of the loop quantity between two vertical loops without affecting the strip tension in each loop.

This invention relates to the field of steel production technology, specifically to a production line and method for shortening the non-cooled section of high-speed wire rod under the TMCP process. The production line includes a loading platform connected to the furnace inlet via an inlet roller conveyor. The furnace outlet is connected to the roughing mill, No. 1 flying shear, intermediate mill, No. 2 flying shear, pre-finishing mill, and modular mill via an outlet roller conveyor. The modular mill outlet is sequentially connected to No. 1 pinch roll, No. 3 flying shear, and finishing mill. The finishing mill outlet is sequentially connected to No. 2 pinch roll, No. 4 flying shear, mini mill, No. 3 pinch roll, No. 4 pinch roll, front pinch roll of the wire rod feeder, and the wire rod feeder. This invention enables minimal shearing of the non-cooled section at the head of high-speed wire rod produced using the TMCP process, reducing the length of the non-cooled section from 50-60 meters to 3-10 meters.

The utility model discloses a compact high -speed rolling loop support mechanism relates to the rolling technical field of metal. A compact high -speed rolling loop support mechanism, including loop platform, the inside installation of loop platform has the loop roller subassembly, and the support replacement structure is located on loop platform, and the support replacement structure includes the installation base, the support base and four bolts, and the support base fixedly connected in the bottom of loop platform, and the both sides of installation base and support base all are fixedly connected with two fixed plates, and wherein corresponding two fixed plates are fixedly connected through two bolts, the utility model discloses setting the replaceable buffer pad on the support base, and the buffer pad can effectively alleviate the impact and friction between support mechanism and ground, and most impact force and friction force are dispersed, and the damage to support base body is reduced, and the buffer pad can be individually replaced after wearing, the support base is avoided and is overall scrapped because of partial wear, and the service life of support seat is further prolonged.

The utility model relates to the technical field of loop wheels, in particular to a combined loop wheel which comprises a riding wheel shaft, an installation assembly, a limiting assembly and a fixing assembly. The mounting assembly comprises a taper sleeve, a pressing end cover, a pressing bolt and a tungsten carbide roll collar, the taper sleeve is detachably connected with the riding wheel shaft and located on the outer side of the riding wheel shaft, the pressing end cover is detachably connected with the riding wheel shaft and located on the outer side of the riding wheel shaft, and the pressing bolt is in threaded connection with the riding wheel shaft and penetrates through the pressing end cover and the tungsten carbide roll collar to be in sliding connection with the taper sleeve; and the limiting assembly and the fixing assembly are respectively connected with the riding wheel shaft, so that the problems that the loop wheel of the high-speed wire rod finishing mill cannot be normally disassembled for maintenance and raw materials are wasted during hot charging are solved.

The invention discloses a wire coil diameter adjusting device and method for a silking machine, the wire coil diameter adjusting device comprises a conveying roller way and two limiting units, the conveying roller way is used for bearing and driving a coil discharged by the silking machine to move, and the two limiting units are used for limiting the motion trails of the coil on the conveying roller way along the two sides of the width direction of the conveying roller way respectively; the limiting units are used for limiting the size of a coil on the conveying roller way in the width direction of the conveying roller way, and the position of each limiting unit in the width direction of the conveying roller way can be adjusted. By arranging the limiting unit, the position of the limiting unit can be adjusted in the width direction, the coil diameter requirements of wire rods of different specifications can be rapidly met, and downstream customers do not need to adjust coils. While the cost is reduced, the requirements of downstream customers for high-efficiency, low-cost and low-waste production and customization are met, the resource utilization rate is increased, and the carbon emission is reduced.

The invention relates to the technical field of bar rolling, and discloses a tension-free rolling control method based on a loop scanner in bar rolling, which comprises the following steps: S1, setting parameters of the loop scanner and related equipment, S2, carrying out preparation work before rolling, S3, carrying out tension-free control in the rolling process, and S4, carrying out inspection and maintenance after rolling. The height of the loop is monitored in real time through the loop scanner, cascade speed control and micro-tension adjustment are combined, rolled piece size fluctuation caused by dynamic speed change between racks can be effectively eliminated, the size deviation of a finished product is controlled within a smaller range, the requirement of a high-specification bar for size precision is met, the surface quality and mechanical performance of the product are improved, and the production cost is reduced. By means of tension-free rolling, friction and extrusion between the rolled piece and a guide and guard device and between the rolled piece and a roller bed are reduced, the generation probability of surface scratches and scabbing defects is reduced, meanwhile, stable rolling conditions are beneficial to homogenization of internal structures of the rolled piece, and the mechanical property of products is improved.

The utility model relates to the technical field of metallurgy, in particular to a spinning forming device which comprises a spinning rotary table, a discharging channel and a conveying roller, the discharging end of the spinning rotary table faces the feeding end of the discharging channel, the discharging end of the discharging channel faces the conveying roller, a detachable spinning pipe limiting mechanism is arranged on the spinning rotary table, and the feeding end of the discharging channel faces the conveying roller. The detachable spinning pipe limiting mechanism is arranged, and the spinning pipe can be arranged in the limiting mechanism, so that during spinning forming operation, force borne by the spinning pipe can be uniformly distributed on the limiting mechanism, even if abnormity occurs, when an alarm mechanism finds out, the whole limiting mechanism can guarantee overall integrity, chain abnormity cannot occur, and the safety of spinning forming operation is guaranteed. And enough response time is provided for field staff.

The application relates to the field of cold rolling technology and discloses a control method and a control circuit for six-stand rolling. The multi-stand rolling mill comprises a first stand, a second stand, a third stand, a fourth stand, a fifth stand and a sixth stand, a loop is arranged in front of the first stand, and an uncoiler is arranged in front of the loop. The continuous rolling method comprises the following steps: obtaining a first strip steel, normalizing and pickling the first strip steel; unwinding the first strip steel on the uncoiler; heating the first strip steel, when the first strip steel is heated to 81-99 DEG C, the first strip steel is sent to the loop; before the first strip steel passes through the loop and reaches the first stand, the first strip steel is heated, when the first strip steel is heated to 121-200 DEG C, the first strip steel is sent to the first stand to start rolling. The application realizes the continuous rolling of high-grade oriented silicon steel and high-grade non-oriented silicon steel, improves the production efficiency, improves the product quality and reduces the production cost.

The utility model discloses a water cooling structure of a silking machine, belongs to the technical field of silking machines, and aims to solve the problem that a wear-resistant ring of the silking machine is deformed due to thermal expansion. Comprising an inner arc plate, an outer arc plate, sector ring plates and side plates, the inner arc plate and the outer arc plate are arc plates with the middles protruding upwards, the inner arc plate and the outer arc plate are coaxially arranged, the front side edge of the inner arc plate and the front side edge of the outer arc plate are connected through one sector ring plate, and the rear side edge of the inner arc plate and the rear side edge of the outer arc plate are connected through the other sector ring plate; the inner arc plate, the outer arc plate and the two sector ring plates define an arc-shaped cooling flow channel, the two side plates seal the two ends of the cooling flow channel respectively, a water inlet pipe is arranged in the middle of the outer arc plate, water outlet pipes are arranged on the two side plates, and the outer surface of the inner arc plate is attached to the upper side surface of a wear-resistant ring of the silking machine protection cover in a matched mode. And the wear-resistant ring is cooled by cooling water, so that the hidden danger of deformation of the wear-resistant ring is eliminated. The device is simple in structure, low in investment, quick in effect and capable of reliably solving problems.

The present application relates to a kind of wire coil automatic adjusting device, including wire feeder, cooling channel, scanning detection device and multiple groups of hydraulic cylinder, runner and connecting rod and other components, the shape quality of coil is monitored in real time by scanning detection device, and is driven by hydraulic cylinder to arc plate and cover plate, and the shaping adjustment of coil is carried out, ensure that coil keeps ideal shape in cooling channel, avoid quality problem in production process.This device automatically adjusts the shape of coil, improves production efficiency and reduces the risk of manual operation, solves the irregular phenomenon of coil caused by problems such as speed mismatch, mechanical failure or temperature unevenness.

The application discloses a kind of control method and device of loop, the control method is by obtaining the preset speed limiting value of target loop, when receiving the node signal that current strip enters rolling mill, it is explained that the change of the steel coil that rolling mill is rolled on endless rolling production line is occurred, the loop speed adjustment amount of current strip is determined, according to preset speed limiting value and loop speed adjustment amount, the cascade speed interval of target loop is obtained, when rolling current strip, the running speed of target loop is controlled in cascade speed interval, to prevent the running speed of target loop reaches preset speed limiting value and cannot be adjusted, and then improve the reliability of loop control on strip production line.

The utility model discloses a pinch roll outlet guide and guard device. The device comprises a first pipe clamp and a second pipe clamp which are oppositely arranged, a first containing groove is formed in the first pipe clamp, a second containing groove is formed in the second pipe clamp, a containing cavity is defined by the first containing groove and the second containing groove, and a guide pipe for a rolled piece to penetrate through is arranged in the containing cavity. The first pipe clamp is provided with a water inlet and a water outlet which are used for being connected with an external water cooling device. The first pipe clamp is provided with the water inlet and the water outlet, so that an external water cooling device can be connected to cool the guide pipe and a rolled piece, the wear resistance of the guide pipe is improved, the service life of the pinch roll outlet guide and guard device is prolonged, the shutdown frequency is reduced, and the production cost is reduced.

The application provides a method for loop optimization control in high-speed bar rolling, a loop control model with faster dynamic response speed is developed, and the proportional coefficient of a PID regulator is dynamically adjusted according to the deviation value between the actual value of the loop height and the set value of the loop height: when the deviation value is less than 30 mm and greater than or equal to 10 mm, the proportional coefficient is increased to 8; when the deviation value is less than 10 mm and greater than or equal to 5 mm, the proportional coefficient Kp is reduced to 5, and the proportional coefficient is appropriately reduced to 5; when the deviation value is less than 5 mm and greater than or equal to 1 mm, the proportional coefficient is reduced to 2; through the dynamic adjustment of the proportional coefficient of the PID regulator, the quick response of the rolling mill speed adjustment amount can be realized, the actual value of the loop height is adjusted to the set value of the loop height in the shortest time, the problem of slow loop adjustment is solved, the adjustment time is reduced to 100 ms through detection, the adjustment time is reduced by 50%, and the effect of stable loop control is achieved.