34results about "Length control device" patented technology

The invention provides a hot-rolled high strength steel sheet used in double-face enamel and a preparation method thereof, comprising the following chemical composition: C: 0.05 to 0.15 weight percent, Si: less than or equal to 1.0 weight percent, Mn: 0.5 to 2.0 weight percent, P: less than or equal to 0.05 weight percent, S: less than or equal to 0.05 weight percent, Al: 0.01 to 0.10 weight percent, N: 0.008 to 0.015 weight percent, Ti: less than or equal to 0.05 weight percent, V: 0.02 to 0.2 weight percent, and the rest are Fe and inevitable impurities. By controlling the hot rolling technology and the cooling speed, second phase particles which are tiny and dispersed are ensured to be generated from vanadium and titanium in the steel, thus enhancing the strength, fish scaling resistance and adherence of the steel sheet; and the products after enamel firing can still maintain higher strength, thus better meeting the compression resistance requirements of different porcelain products, and being capable of being used for producing chemical reaction tanks and water treatment tanks and the like from double-face enamel.

The present invention relates to a new process for continuously casting and rolling bar material, belonging to the field of metallurgical forming technology. It is characterized by that it is a technical process for directly casting liquid metal and rolling it to make it be formed into bar material. Said invention also provides the concrete steps of said new process.

The invention provides a bar steel full fixed-length intelligent control system and a fixed-length control method. The bar steel full fixed-length intelligent control system comprises a billet weight adjusting system, a blank tracking system, a finished product steel length detecting system, a steel full fixed-length intelligent analyzing system and a steel minus deviation sampling system. The steel minus deviation sampling system carries out sample measuring on samples, measured data is transmitted to the steel full fixed-length intelligent analyzing system to be analyzed, the steel full fixed-length intelligent analyzing system judges whether the final rate of fixed-length reaches the standard or not, if the standard is not reached, the analyzed data is transmitted to the billet weight adjusting system so that the billet weight can be adjusted, the blank tracking system monitors the following procedures of adjusted billets, the finished product steel length detecting system collects and feeds data of finally fixed-length materials back to the steel full fixed-length intelligent analyzing system to judge whether the billet weight needs to be adjusted again or not, and the rate of fixed-length can reach 99.7 %.

The invention provides a PLP strip fixed-length conveying measurement device and method, and belongs to the technical field of rolling. The device comprises a clamping roller, a length measurement coder, a position sensor used for detecting a roller seam of the clamping roller and a computer control system having a pulse calibration manner and a fixed-length conveying manner. According to the control method, by identifying changes of the roller seam of the clamping roller, the unit pulse length of the length measurement coder of the clamping roller can be corrected in real time, high-accuracy length measurement of a PLP strip is achieved, and the measurement length error is smaller than +/-0.5 mm; and the number of shorn finished product unequal thickness plates between two times of adjustment of the PLP strip can be effectively increased.

The invention provides an online length measuring method for a thermal-state steel pipe. The online length measuring method is characterized in that an optical fiber type hot metal detector with response time being 5ms is separately above each of a roller way with a distance of 1.5-2m from an outlet of a tandem mill and a roller way with a distance of 12-14m from the outlet of the tandem mill. After the thermal-state steel pipe is rolled by the tandem mill, the head part of the thermal-state steel pipe firstly passes through the first hot meal detector with a shorter distance, the first hot metal detector is used for converting a detected value into an electric signal which is input into a PLC, and the PLC starts timing; when the head part of the thermal-state steel pipe passes through the second hot metal detector, the PLC reads a first timing interval; and when the tail end of the steel pipe deviates from the first hot metal detector, timing of PLC is ended, and the PLC calculates length Y of the steel pipe by setting procedures. The online length measuring method is simple and reliable, can completely meet technological requirements, can operate on an HMI of a computer and can display effective steel pipe length, wherein detected length is 12-35m, and detection errors are +/-10mm; and the length of the steel pipe is detected, so that tandem-rolling regulating precision is improved and unit yield is increased.

The invention discloses a monitoring and controlling device of a roller lubricating system. The device comprises a temperature detecting device, a constant-temperature oil storage system and a controlsystem, wherein the constant-temperature oil storage system is connected with a lubricating oil inlet and a lubricating oil outlet of a target roller through pipelines, so that the lubricating oil can circularly flow in the target roller and the constant-temperature oil storage system, and the lubricating oil level in the target roller is kept within a preset liquid level interval value; the constant-temperature oil storage system is also used for adjusting the temperature of the lubricating oil; the temperature detection device is used for detecting the temperature information of the lubricating oil in the target roller; and the control system is used for controlling the constant-temperature oil storage system to adjust the temperature of the lubricating oil according to the temperatureinformation of the lubricating oil in the target roller, so that the temperature of the lubricating oil in the target roller is within a preset temperature interval value. The device solves technicalproblem that the service life of the roller is decreased due to the fact that the roller lubricating oil is not monitored and controlled in place.

The invention discloses a method and device for optimizing the length of a pipe body. By obtaining the production process and the order length of the finished pipe body; according to the obtained production process and the order length of the finished pipe body, the rolling length, pipe body Target length and number of cuts; confirm the calculated rolling length of the pipe body, target length of the pipe body and number of cuts, and calculate the single length of the tube blank, the planned weight of the finished product and/or the planned cost of the finished product number. The method and device for optimizing the length of the pipe body provided by the present invention realize the automatic transformation from sales order to production order and then to process order, and automatically calculate the rolling length, the number of cuts, The tonnage and/or count of the finished product and the single length of the required billet realize the optimization of the rolling length and improve the yield. production efficiency.

The invention discloses an automatic cutting machine of steel pipe welding coiled materials. The automatic cutting machine of the steel pipe welding coiled materials comprises a reverse arc-shaped straightening mechanism, a hydraulic driving type electric clutch feeding mechanism, a left-right position adjusting mechanism, a hydraulic cylinder connecting rod cutting mechanism and a rack. The hydraulic cylinder connecting rod cutting mechanism and the reverse arc-shaped straightening mechanism are arranged at the front end and the rear end of the rack respectively, the left-right position adjusting mechanism is arranged at the position, arranged on the rear side of the hydraulic cylinder connecting rod cutting mechanism, of the rack, the hydraulic driving type electric clutch feeding mechanism is arranged on the rear side of the left-right position adjusting mechanism, and the hydraulic driving type electric clutch feeding mechanism is arranged on the rack. According to the mode, a steel plate of the whole coiled material can be straightened and rolled to be flat, the parallelism degree is corrected, and a diamond steel plate is prevented from being cut out.

The invention discloses a hot rolling box for shearing a strip steel head of the hot continuous rolling and a method for shearing the strip steel head. The hot rolling box comprises flying shears anda PLC (programmable logic controller) system, wherein the flying shears are arranged behind a hot rolling box body, and the PLC system controls the hot rolling box to work; the hot rolling box furthercomprises a first high-temperature detector and a second high-temperature detector; the first high-temperature detector and the second high-temperature detector are controlled by the PLC system; andthe first high-temperature detector and the second high-temperature detector are arranged between the hot rolling box body and the flying shears at intervals. The first high-temperature detector and the second high-temperature detector are additionally arranged on the hot rolling box to monitor the strip steel head, and the starting time of the flying shears is calculated according to the monitored data, so that strip steel reaches the shearing position and is subjected to the set shearing length, shear blades of the flying shears are just rotated to a shearing position for shearing operation,accurate shearing of the strip steel head is realized, waste can be avoided, the production cost is reduced, the temperature of the strip steel head is ensured to meet the production requirements, and waste steel caused by too low temperature of the head is avoided.

The invention discloses a method for controlling a thickness of a hot-continuous-rolled intermediate slab and a length of a cast ingot, and relates to the technical field of metal pressure machining. The method comprises the following steps: according to a set rolling pass reduction rate of each frame of a continuous rolling machine and a thickness of a finished rolled piece, a thickness reference value of the intermediate slab and a rolling pass reduction quantity of each frame are inversely computed; the rolling force checking and the correction are performed for the thickness reference value of the intermediate slab; if calculated rolling force exceeds a maximum rolling force allowed value allowed by each frame, the rolling pass reduction quantity is reduced, and the iterative computation is repeated until the calculated rolling force is lower than or equal to the maximum rolling force allowed value; then, the correction calculation is performed for the thickness reference value of the intermediate slab, and a rough rolling machine is used for rolling to reach the calculated thickness of the intermediate slab; according to the corrected thickness value of the intermediate slab, a length of a roller way from the rough rolling machine to a continuous rolling machine, and a thickness of the cast ingot, the length of the cast ingot is calculated; and the cast ingot is cast according to the calculated length of the cast ingot. The method solves the problem of low yield in traditional hot continuous rolling production.

The invention discloses a deformed steel bar finished product sampling control system and method. The system comprises a detector, a PLC module, a parameter setting module, a driver and a shearing machine, wherein the detector is electrically connected with the PLC module, the parameter setting module is in communication connection with the PLC module, the PLC module, the driver and the shearing machine are electrically connected in sequence, the detector is mounted on one side of the shearing machine and is used for detecting the length of a to-be-sampled deformed steel bar finished product through the shearing machine, the parameter setting module is arranged in an operating chamber and is used for setting sampling parameters of the deformed steel bar finished product and sending the sampling parameters to the PLC module, and when the detector detects that the length of the deformed steel bar finished product reaches a preset condition, the PLC module controls the driver to drive theshearing machine to shear the deformed steel bar finished product to complete sampling. Through the system, the sampling efficiency of the deformed steel bar finished product can be improved.

The invention discloses a technique for controlling the size scatter difference of bearing steel of hot-rolled round steel. The technique comprises the steps of (1) controlling the scatter differenceof the head and tail of the round steel; (2) controlling the size scatter difference of the middle part. According to the technique, the parts with high temperature of the head and tail are independently collected on line and are measured one by one in an offline mode, and the middle part is treated by organizing a debugging material, uniformly tapping, using a looper and specifying a measuring tool, so that the scatter difference of the whole batch is less than or equal to 0.30 mm, and the operating requirement of a customer is satisfied.

Provided is a method for rolling differential thickness steel sheets, the method being capable of improving the yield of differential thickness steel sheets. The excess length of the thin-walled section is calculated (Step (ST7)) on the basis of the observed cross-sectional area of the thick-walled section calculated at the time of a primary rolling (Step (ST1)). Next, the rolled length of the thin-walled section is calculated (Step (ST8) - Step (ST12)) so that the excess cross-sectional area is distributed between the thick-walled section and the thin-walled section in accordance with the excess length of the thin-walled section. Then, a secondary rolling is performed using the calculated rolled length (LX(Sx)) for the thin-walled section.

The invention discloses a feeding mechanism of an automatic cutting machine for a welded steel tube coil. The feeding mechanism of the automatic cutting machine for the welded steel tube coil comprises a main feeding roll shaft, U-shaped plates, a pressing roll shaft, pressing roll shaft bases, main feeding roll shaft bases, pressing oil cylinders and pulling rods. The two parallel corresponding U-shaped plates are installed on a machine frame and are connected and supported through the four pulling rods, the pressing roll shaft bases are arranged in U-shaped grooves of the two U-shaped plates and installed at the two ends of the pressing roll shaft, the upper ends of the pressing roll shaft bases are connected with piston rods of the pressing oil cylinders which are installed at the top ends of the U-shaped plates, the pressing roll shaft and the main feeding roll shaft are attached to each other in the same direction, the two ends of the main feeding roll shaft are provided with the main feeding roll shaft bases, and the main feeding roll shaft bases are installed on the U-shaped plates through screws. In this way, a whole coiled steel plate can be rapidly straightened and rolled to be flat, the depth of parallelism is modified, and no diamond-shaped steel plates are obtained through cutting.

The invention discloses a reversible cold rolling accurate fixed-length rolling control device. The reversible cold rolling accurate fixed-length rolling control device comprises a left tension leading belt device and a right tension leading belt device; a tension leading belt of the left tension leading belt device is connected with one end of a plate rolling piece through a coupling; a tension leading belt of the right tension leading belt device is connected with the other end of the plate rolling piece; the plate rolling piece penetrates through a reversible cold rolling machine; the tension leading belts of the left tension leading belt device and the right tension leading belt device are provided with a left positioning detecting system and a right positioning detecting system; the left positioning detecting system and the right positioning detecting system are positioned above and below the tension leading belts for direct and accurate detection of the position of the plate rolling piece; and the left tension leading belt device and the right tension leading belt device cooperate with the reversible cold rolling machine for reciprocating rolling. The reversible cold rollingaccurate fixed-length rolling control device has the advantages of simple structural setting, economical and reliable use and convenience to operate and maintain.

The invention provides a stepped ejection method which comprises the following steps: realizing online real-time measurement of the length of a multi-strand casting blank by utilizing an infrared imaging technology to obtain online real-time measurement data of the length of the multi-strand casting blank; the computer measures data on line in real time according to the length of the multi-stream casting blank, and the pulling speed of each stream of the continuous casting machine is controlled; wherein the pulling speed of each flow of the continuous casting machine is controlled according to the relation between the production capacity of the rolling mill and the production capacity of the continuous casting machine. According to the method, manual intervention is not needed, the equal time interval of each flow of feeding into a casting machine during stepped ejection can be conveniently and quickly realized, and heating-free direct rolling is realized.

The invention relates to the technical field of thread rolling machines, in particular to a multifunctional thread rolling machine. The multifunctional thread rolling machine comprises a transmission device, a supporting box, a motor, a lengthened shaft, a linkage plate, a first adapter seat, a second adapter seat, a thread rolling shaft, an adjusting plate, a sliding shaft, two connecting plates, an electric push rod and a frame plate. First long-strip-shaped holes are formed in the left part and the right part of the frame plate, a supporting shaft is arranged in the middle of each first long-strip-shaped hole, a fixing nut is connected to the rear part of each supporting shaft through threads, an extension plate sleeves the front part of each supporting shaft, a second long-strip-shaped hole is formed in the middle of each extension plate, each supporting shaft penetrates through the corresponding second long-strip-shaped hole, a photoelectric sensor is installed on the upper part of each extension plate, clamping nuts are connected to the front parts of the supporting shafts through threads, and the rear ends of the clamping nuts make contact with the front ends of the corresponding extension plates. The height of a bottom supporting part can be conveniently adjusted, the length of a thread machined on the part can be conveniently determined, operation of a user is facilitated, and the machining efficiency is high.

The invention discloses a wireless control device and system for a post-cold-shearing roller way. The wireless control device comprises an operation box, a signal transmitter, element height adjustingrods, an element containing rod, a clamping piece, a sealing plate, control switches, a clamping block, a power source, supporting columns, a supporting plate, universal wheels, pushing handles and hinges. The wireless control system comprises the control switches, the signal emitter, a central controller, a signal receiver, a PLC, a roller way, a baffle and a waste removing device. A traditionalwired control manner is replaced with a wireless control manner, convenience of actual operation of a traditional operation box is improved on the premise that stability of the control effect is guaranteed, and various kinds of inconvenience brought by wired control are successfully avoided. The problems that in the prior art, an operation box is fixed and connected with control equipment in a wired manner, due to the narrow operation space and scattered operation points in on-site operation of a metallurgy post-cold-shearing roller way platform, back-and-forth operation is not easy, and theoverhaul difficulty is improved are solved.