47results about How to "Guaranteed production rhythm" patented technology

In order to solve the technical problem that after a working roller of a temper mill is replaced, the roller surface of the working roller is damaged in the machine frame closing process, the invention provides a method of controlling the temper mill. The temper mill comprises a machine frame and an electro-hydraulic servo system. The machine frame comprises an upper roller system and a lower roller system, and the electro-hydraulic servo system controls the machine frame to be opened and closed. The electro-hydraulic servo system comprises a PID controller which adjusts the servo threshold opening degree of the electro-hydraulic servo system. In the rolling force control stage of the process that the electro-hydraulic servo system controls the lower roller system to upwards move to closethe machine frame, the PID controller adjusts the output amplitude limiting value coefficient Umax, the amplitude limiting is conducted on the servo threshold opening degree, the inertia impact forcewhich is generated when rollers make contact with strip steel in the closing process of the temper mill is reduced, the phenomenon that the damage to the roller surface of the new working roller exists in the closing process is avoided, and therefore the defect of transverse roller marks which appear on the surface of the strip steel in the vehicle starting production process is overcome, and thesurface quality of the strip steel is improved.

The invention discloses a smelting method of high-nitrogen sulfur-containing free-cutting steel. The smelting method mainly comprises the following steps of converter smelting tapping, LF refining furnace treatment, RH vacuum furnace treatment and continuous casting; an aluminum ingot is added in the tapping process for pre-deoxidation, low-alkalinity slag is made by an LF refining furnace, a small amount of aluminum particles are added in the slag surface, the diffusion deoxidation efficiency is improved, and molten steel is greatly purified; and an RH vacuum furnace adopts nitrogen drive, limit vacuum is kept for a certain time, a first-stage pump is retreated to a fourth-stage pump after vacuum breaking, a nitrogen-containing alloy is added, and circulation is conducted for 5 min, so that the S content and the N content in the steel can be accurately controlled, narrow-range accurate control over molten steel components is guaranteed, meanwhile, the refining period is stabilized, operation is easy, and the method is suitable for mass production. The method is simple, effective, easy to operate, capable of accurately controlling refining time and refining components, improving molten steel quality and guaranteeing the production rhythm and suitable for wide popularization.

The invention provides a feeding system and a packaging bagger. The feeding system comprises coiling blocks, two clamping mechanisms, a deviation correcting mechanism and a conveying roller assembly, wherein each coiling block is formed by coiling a material or the material is coiled on each coiling block; the two clamping mechanisms are positioned at the two sides of the coiling blocks; the coiling blocks are arranged on the clamping mechanisms; a deviation correcting part of the deviation correcting mechanism swings to correct deviation of the conveying position of the material; the deviation correcting mechanism is positioned in the downstream position of the coiling blocks; the conveying roller assembly is positioned between the coiling blocks and the deviation correcting mechanism in the motion direction of the material. The feeding system disclosed by the invention solves the problem that in the prior art, material deviation happens of a feeding system and accordingly normal production is affected .

The invention discloses an automatic production system of a spike. The automatic production system comprises an automatic spike feeding machine, a spike heating machine and a spike thread rolling machine, wherein the automatic spike feeding machine comprises a spike feeding line, a stepped feeding machine and a discharging mechanism, the spike feeding line is used for conveying the spike to the stepped feeding machine, and the stepped feeding machine conveys the spike to the discharging mechanism in a stepped feeding mode; the spike heating machine is arranged at the tail end of the discharging mechanism of the automatic spike feeding machine, the spike heating machine comprises a rotary disc type feeding mechanism and a heating mechanism, the heating mechanism is arranged on a conveying route of the rotary disc type feeding mechanism, and the spike on the rotary disc type feeding mechanism is heated; a robot gripper is arranged between the spike thread rolling machine and the rotary disc type feeding mechanism, and the robot gripper grabs the spike which passes through the heating mechanism and moves the spike to the spike thread rolling machine to carry out thread rolling operation. According to the automatic production system of the spike, the automatic and systematized production of the spike is realized, and the production efficiency is improved.

The invention discloses a carbonization furnace wall spray repair device and method belonging to the technical field of coke making. In the carbonization furnace wall spray repair device, one end of a positioning mechanism is movably arranged in a sliding chute; a high-temperature imaging instrument is arranged at the other end of the positioning mechanism; a closing plate is arranged at the other end of the positioning mechanism; one end of a purging mechanism is arranged on a coke leveling vehicle, and the other end is arranged on one side of the closing plate; one end of a refractory mortar conveying mechanism is arranged on the coke leveling vehicle, the other end is communicated with the closing plate, and the refractory mortar conveying mechanism is communicated with one end of the purging mechanism; and a programmable logic controller is connected with the positioning mechanism, the high-temperature imaging instrument, the purging mechanism, the refractory mortar conveying mechanism and the coke leveling vehicle. According to the carbonization furnace wall spray repair device and method, artificial high-temperature repair work in a carbonization chamber can be replaced, thus effectively relieving the labor intensity and ensuring the production safety; and no cooling treatment is needed, thus shortening the repair time, ensuring the production rhythm and being beneficial to the long service life of a carbonization chamber walling.

The invention provides a steel rolling heating furnace charging blank length measurement alarm method and device. The method comprises the steps that a furnace blank steel feeding signal is obtained;according to the furnace blank steel feeding signal, a metal detector and an encoder are controlled to operate, and output results including a first distance actual measurement value and a second distance measurement value of a furnace blank are obtained; a first distance set value is obtained; a first error value is calculated according to the first distance actual measurement value and the firstdistance set value; a second error value is calculated according to the second distance measurement value of the furnace blank, the first distance set value and the first error value; a total error value is obtained according to the first error value and the second error value; an error setting threshold is obtained; and the alarm information is obtained according to the total error value and theerror setting threshold. The technical problems that a method used in the prior art is large in measurement value error, false alarm is likely to be generated, and the production rhythm is influencedare solved. The technical effects that the length detection result is more accurate, the accuracy of alarm information is ensured, and the false alarm rate is effectively reduced are achieved.

The invention discloses a TMCP type bridge steel plate with small same-plate strength difference and a production method thereof. According to the production method, a continuous casting billet is sequentially and continuously subjected to a heating procedure, a recrystallization zone rolling procedure, an intermediate billet head and tail shielding and cooling procedure, a non-recrystallization zone rolling procedure and a cooling procedure to be manufactured into the bridge steel plate, in the intermediate billet head and tail shielding and cooling procedure, multi-stage cooling is carried out on a intermediate billet until the intermediate billet is cooled to the final cooling temperature of 860 DEG C +/-15 DEG C and the temperature difference between the head, the middle and the tail of intermediate billet is smaller than or equal to 30 DEG C; and the cooling process of each stage comprises the following steps of determining head and tail low-temperature parts and shielding percentage of the intermediate billet according to a temperature detection result of a whole plate; carrying out non-shielding water cooling on the middle main body of the intermediate billet; and meanwhile,carrying out shielding cooling on the head and tail low-temperature parts according to the determined shielding percentage. The same-plate strength difference of the obtained bridge steel plate is smaller than or equal to 30 MPa, the structure is uniform, the plate shape is good, the head and tail excision amount is reduced, the yield and percent of pass are improved, and the short-length rate ofthe steel plate is reduced.

The invention discloses a vehicle tool for a complex welding part. A supporting assembly used for supporting the complex welding part, pressing assemblies used for pressing the complex welding part and a counterweight assembly are arranged on the front face of a transition disc; the supporting assembly comprises a main supporting part corresponding to the flange plate edge of the complex welding part and an auxiliary movable supporting part corresponding to the thin cylindrical section of the complex welding part, the main supporting part is provided with a large positioning groove matched with the flange plate edge, and the auxiliary movable supporting part is provided with a small positioning groove corresponding to the thin cylindrical section; and the pressing assemblies comprise the first pressing assembly used for pressing a reinforcing rib and the second pressing assembly used for pressing an auxiliary cylindrical section. Through the cooperation of all the components of the vehicle tool, and the complex welding part can be quickly aligned; and after the position of the tool is aligned, follow-up adjustment is not needed, the clamping efficiency is improved, the output speed of workpieces is greatly guaranteed, the production rhythm is guaranteed, and the problem of narrow opening production is solved.

The invention discloses a forming box mechanism for a 3DP printing technology. The forming box mechanism for the 3DP printing technology comprises a forming rack, a forming box body, a forming platform, a jacking assembly, a sealing sponge and a sealing pressing plate, the forming box body is slidably inserted into a workbench of the forming rack, the forming platform is arranged in the forming box body, the forming platform is driven by the jacking assembly to move up and down in the forming box body, a sealing groove is formed in the periphery of the upper plane of the forming platform, the sealing sponge is arranged on the sealing groove, the sealing pressing plate for packaging the sealing sponge is arranged on the forming platform, and the sealing sponge is tightly attached to the inner wall of the forming box body. By means of the mode, the forming box mechanism for the 3DP printing technology is compact in structure and ingenious in design, supports products in the layer-by-layer printing process, cancels small cylinder supports on original products, achieves efficient utilization of printing materials, avoids waste of the printing materials, and guarantees printing precision and printing stability.

The invention discloses an overlapping machine. The overlapping machine comprises a base, a supporting device, a lifting device, a clamping device and two conveying belts; the supporting device is arranged on the base; the two conveying belts are symmetrically arranged inside the base in the conveying direction; the lifting device is installed on the base and is positioned between the two conveying belts; and the clamping device is installed on the supporting device. The overlapping machine disclosed by the invention improves the work efficiency of the overall production line and lowers the manufacturing cost.

The invention provides a dynamic temperature control system and control method in the steel-making liquid steel continuous casting process. The dynamic temperature control system comprises an L3 production plan management module, an L3 process temperature computation module, an L3 workstation actual production management module, an L2 workstation production and temperature control module and an L2 actual production management module. The L3 production plan management module is used for generating or adjusting a steel-making continuous casting production plan according to production contract conditions, the actual conditions in the production process of all workstations and the changes of the workstations. The L3 process temperature computation module is used for computing the target temperatures corresponding to all the workstations according to the production plan of the L3 production plan management module. The L2 workstation production and temperature control module is used for conducting process control over temperatures according to the received liquid steel target temperatures, and qualified liquid steel is produced. The L2 actual production management module is used for collecting the actual production of the workstations in the current heat and uploading the actual production to the L3 workstation actual production management module. According to the dynamic temperature control system and control method in the steel-making liquid steel continuous casting process, precise control over the final temperatures of all the workstations can be achieved.

The invention relates to a method for determining a wear degree of a wringing roller in pickling, and belongs to the technical field of cold-rolled strip steel pickling. According to the technical scheme of the method, a wringing roller wear time mathematical model is established, and the established mathematical model is utilized in a secondary system to automatically select a length, a running speed, a position load coefficient and a mark load coefficient for producing a current coil; and wear time of the wringing roller at different positions is automatically calculated, when the wear time of the wringing roller reaches a specified value, the wear degree of the wringing roller reaches an optimal state, and periodic replacement can be conducted. The method has the beneficial effects that accurate use tracking of the wringing roller can be effectively realized, accurate control capability of the wear degree of the wringing roller is improved, an accident rate of the wringing roller is reduced by 90% or more, the method plays a great role in pickling quality and stable production of products, and an accurate control problem of the wear degree of the wringing roller is well solved.