53results about How to "Production is stable and smooth" patented technology

The invention discloses a straightening method of a head turning steel plate. The method comprises the following steps: when a high temperature meter detects that the steel plate is discharged from a finish mill, a turning head steel plate straightening mode is selected, the reverse correction is synchronously selected, and the state enters a semi-automatic mode; a set value of a model computer is requested, and the operation is performed by adding a head turning height according to the set value after receiving the set value; when a first grating is activated, the straightening sequence is started; when first and second gratings are activated, a position tracking and high pressure mode is started, and the steel is bitten with a speed of not higher than 0.7 m / s; when first, second and third gratings are activated, the steel plate enters a straightening machine, a steel plate stop button is pressed down to stop the steel plate, the high-pressure return is performed, and a roller gap is descended to the set position of the model computer; and when the position of the roller gap arrives at the set value of the model computer, the reverse correction is selected, and the forward straightening is performed to finish the straightening sequence. The method can set the roller gap according to the height of the steel plate turning head to guarantee normal steel biting and straightening effects.

The invention discloses a flexible strip steel treating line suitable for producing various high-strength steel. The flexible strip steel treating line comprises an uncoiling working position, a washing working position, a heating working position, a soaking working position and a slow cooling working position, a jet cooling working position or a water quenching cooling working position in turn, wherein a reheating working position and then an overaging working position or a hot galvanizing working position and a cladding alloying and annealing working position are arranged after the jet cooling working position; a moveable bypass channel is arranged to connect the reheating working position and the overaging working position respectively; a final cooling working position and a flatting working position are connected after the overaging working position and the hot galvanizing working position; then, a finishing working position and an oil coating working position, or a passivating working position and other post-treatment working positions are connected; the finishing working position and the oil coating working position are connected to a coiling working position to finish a finished product; an acid cleaning working position and an electroplating working position are arranged corresponding to the water quenching and cooling working position; the reheating working position can be connected after the acid cleaning working position directly; an uncoiling and washing working position can be directly connected before the electroplating working position; and the bypass channel or a switching device is arranged after the electroplating working position to respectively and correspondingly connect the reheating working position or directly connect the passivating working position and the other post-treatment working positions.

The invention relates to a method for treating solid waste through a rotary hearth furnace and belongs to the technical field of steel mill solid waste treatment. The problems that in the prior art, recycled zinc oxide powder is low in grade, and finished metallized pellets are high in pulverization rate are solved. The method for treating the solid waste through the rotary hearth furnace comprises the following steps of pelletizing, reduction and zinc-contained powder recycling, and a drying stage is further performed between the pelletizing and the reduction. The method for treating the solid waste through the rotary hearth furnace provided by the invention can be used for treating solid materials generated in the production processes of sintering, ironmaking and steelmaking.

The invention discloses a using method of a coke with different initial reaction temperatures in a blast furnace.The using method comprises the following steps that 1, a coke initial reaction temperature is detected and obtained; 2, a production coke is divided into a first type of the coke and a second type of the coke; 3, material arrangement system of the blast furnace is remained unchanged, acoke material arrangement corner is divided into three parts: a center part, a middle part, and a edge part; and the second type of the coke is arranged in the middle part, and a mixing coke from thefirst type of the coke and the second type of the coke is arranged in the center part and the edge part; 4, using amount percentage by weight of the fist type of the coke in the mixing coke in the center part and the edge part is determined according to blast furnace capacity; 5, normal material arrangement is conducted; 6, when the blast furnace does not work well, using amount of the first typeof the coke in the center part and the edge part is adjusted; and 7, material arrangement is continued according to the adjusted scheme. The using method effectively solves the using problem of the coke with different initial reaction temperatures in the blast furnace, and provides reference for the application of the cokeinitial reaction temperature index in the blast furnace.

The invention relates to the technical field of hypo-peritectic steel production, in particular to a control method for reducing liquid level fluctuation in hypo-peritectic steel production. The method comprises the following steps of 1) weakening peritectic reaction by adopting the following measures: A, controlling the refining heating time to be less than or equal to 10 min; B, supplementing an alloy in a refining station, and controlling the alloy supplementing amount to be smaller than 1.5 kg / t; and C, controlling the carbon content when refining is finished; 2) aiming at uniform growth of a blank shell in a crystallizer, taking the following measures of A, increasing the superheat degree of molten steel and controlling to be 20 to 50 DEG C; B, enabling the alkalinity of casting powder to be not lower than 1.35; C, controlling the flow speed of a water seam of the crystallizer to be 6.0 m / s to 8.0 m / s; and D, enabling the pulling speed to be constant; and 3) aiming at the bulging of a casting blank in a secondary cooling section, taking the following measures of A, enabling a roll gap of a casting machine before production to be + / -0.5 mm, and controlling the qualification rate of the roll gap; B, enabling the water nozzle blocking rate to be not larger than 2 percent; and C, improving the strength of secondary cooling water, wherein the secondary cooling specific water flow is larger than or equal to 0.9 kg / t. According to the control method for reducing liquid level fluctuation in hypo-peritectic steel production provided by the invention, the hypo-peritectic steel production liquid level fluctuation is reduced by 70 percent or above, and stable and smooth production is guaranteed.

The invention discloses an automatic cleaning device and a method for converter inclined plate sedimentation tanks. The automatic cleaning device for inclined plate sedimentation tanks comprises a frame, the frame is installed at the left end and the right end of a sedimentation tank, longitudinal walking mechanisms are slidably connected to the frame, a transverse walking mechanism is arranged between the longitudinal walking mechanisms, a spray gun ascending and descending mechanism is installed on the transverse walking mechanism, and a spray gun is installed on the spray gun ascending anddescending mechanism. According to the automatic cleaning method for converter inclined plate sedimentation tanks, cleaning speed is adjusted based on on-site mud situations, when a 'one-key start' switch is pressed, the automatic cleaning device moves on the inclined plate sedimentation tank according to a set cleaning track for cleaning, and after automatic cleaning is completed, if a certain part of the inclined plate needs to be accurately positioned and cleaned, accurate positioning and cleaning can be completed by inputting corresponding coordinates; according to the invention, the problems of low manual cleaning efficiency and safety are fundamentally solved, the labor intensity of workers is reduced, the loss caused by shutdown maintenance is reduced, and the stable and smooth production is guaranteed.

The invention discloses a method for avoiding breakout due to extrusion of a slab shell during hot width adjustment of a continuous casting mold. The method comprises the step 1 of installing a plurality of rows of thermocouples (4) on the back sides of two wide copper plates (2); the step 2 of detecting the temperature of the wide copper plates through the thermocouples in the casting process, starting to regulate the width, and enabling the judgment model; the step 3 of judging whether each row of thermocouples has a trend of temperature drop during width adjustment and meets the temperaturedrop standards; stopping regulating the width and reducing the casting speed if the thermocouples meet the temperature drop standards, and the slab shell is sunken and marked with a warning sign; continuing casting if the thermocouples fail to meet the temperature drop standards; the step 4 of judging whether each row of thermocouples has a trend of temperature rise during width adjustment and meets the temperature rise standards; stopping regulating the width and reducing the casting speed if the thermocouples meet the temperature rise standards, and the slab shell is cracked and marked withthe warning sign; and continuing casting if the thermocouples fail to meet the temperature rise standards. According to the method, breakout due to sinking and cracking of the slab shell extruded bynarrow copper plates can be detected in the hot width adjustment process of the continuous casting mold, and breakout accidents are avoided, so that the production is performed stably and smoothly.

The invention belongs to the field of amino acid surfactants, in particular to a high-efficiency continuous reaction device for amino acid surfactants, comprising a liquid separation tower, a pipeline synthesis reactor, and a pipeline neutralization reactor; the pipeline synthesis reactor is vertically arranged on the The middle part of the liquid separation tower, and communicated with the liquid separation tower; the pipe synthesis reactor is provided with a raw material inlet far away from the end of the liquid separation tower, and is provided with an acid inlet near the end of the liquid separation tower; The pipeline neutralization reactor communicates with the upper outlet of the liquid separation tower, and an alkali inlet is provided in the middle thereof. And disclosed its reaction method, the process route is simple, the reaction time is greatly shortened, and the whole synthesis reaction can realize continuous material input and product output, which can greatly improve production efficiency, improve reaction uniformity, and reduce side effects. Product yield, improve product quality.

The invention provides a blast furnace batching method based on final slag alkalinity. A computational formula of the final slag alkalinity is a quotient in a division, wherein the dividend is the difference between the sum of the amount of CaO taken in by sintering ores, the amount of CaO taken in by pellet ores, the amount of CaO taken in by charging coke and the amount of CaO taken in by charging coal dusts, and the amount of CaO consumed by desulfuration; the divider is the difference between the sum of the amount of SiO2 taken in by sintering ores, the amount of SiO2 taken in by pellet ores, the amount of SiO2 taken in by charging coke and the amount of SiO2 taken in by charging coal dusts, and the amount of SiO2 commuted by Si carried away by cast iron; and the usage amount of the sintering ores and the pellet ores can be directly computed out through the formula. The blast furnace batching method based on the final slag alkalinity can effectively reduce effects of the SiO2 brought by ash in blast furnace charging fuel of charging coke, coal dusts and the like on the blast furnace final slag alkalinity, has a good and stable blast furnace final slag alkalinity, guarantees the stable smooth operation of the blast furnace production, simplifies the daily production regulation of the blast furnace and has remarkable effects on stabilizing the blast furnace productivity and reducing the blast furnace fuel consumption.

The invention discloses a micro motor magnetic steel assembly device which comprises a working platform and two guide rails on the working platform. A movable supporting base is arranged on the two guide rails. A third air cylinder is arranged on the movable supporting base. An installation arm parallel to the two guide rails is fixed to a piston rod of the third air cylinder. The two ends of the installation arm are provided with a first air cylinder and a second air cylinder. A first magnetic steel attraction device is arranged on a piston rod of the first air cylinder. A second magnetic steel attraction device is arranged on a piston rod of the second air cylinder. A first magnetic steel positioning base, a second magnetic steel positioning base and a shell positioning base are sequentially arranged on the working platform along the straight line. The distance between every two adjacent positioning bases is equal to the distance between the first magnetic steel attraction device and the second magnetic steel attraction device. A fourth air cylinder is installed on the working platform through a support. A piston rod of the fourth air cylinder extends downwards. A magnetizing apparatus corresponding to the second magnetic steel positioning base is arranged on the piston rod of the fourth air cylinder. According to the micro motor magnetic steel assembly device, the labor intensity of workers is reduced, and production efficiency is improved.

The invention discloses a method for avoiding steel breakout caused by extrusion of heat-adjustable billet shells of continuous casting crystallizers. During the pouring process, the thermocouple detects the temperature of the wide-faced copper plate, starts the width adjustment, and starts the judgment model; step 3: judge whether each row of thermocouples has a temperature drop trend during the width adjustment and meets the temperature drop standard; if so, then adjust the width If the billet shell is sunken and given an alarm sign, stop the width adjustment and reduce the pouring speed; if not, continue pouring; step 4: judge whether each column of thermocouples has a temperature rise trend during width adjustment and reaches the temperature rise standard; if it is reached, then When the width is adjusted, the billet shell breaks and an alarm is given, stop the width adjustment and reduce the pouring speed; if it is not reached, continue pouring. The invention can detect steel breakouts caused by depressions and cracks formed after the narrow-side copper plate is extruded on the billet shell during the thermal width adjustment process of the crystallizer, thereby avoiding steel breakout accidents and making production stable and smooth.

The invention relates to a construction method of a ladle lining. The method comprises the following steps: (1) a ladle wall is cleaned; (2) fire clay is coated on the ladle wall and heat preservation plates, the heat preservation plates are sticked from seams of the bottom of the ladle and the ladle wall and along the ladle wall from bottom to top, gaps between the plates are filled with the fire clay, and the constructed heights of the heat reservation plates are equal to the height of a steel water liquid level; (3) holes are arranged between gap lines between an upper row of heat reservation plates and a lower row of heat dissipation plates and around the ladle wall every 1000-1200 millimeters at intervals, and two neighboring rows of holes are arranged in a mutually staggered mode; (4) after the heat preservation plates are constructed, fetal membranes are installed to tie permanent layer castable; and (5) after the permanent layer is tied and naturally dried, a working layer is constructed and is used in an online-mode after being baked. The method can effectively reduce heat loss of the ladling lining, improve temperature-controlling ability in the steel-making process, and ensure stable processes of production, and can also prolong service life of ladle shells, the ladle lining permanent layer and the working layer, and reduce production cost.

The invention discloses a straightening method of a head turning steel plate. The method comprises the following steps: when a high temperature meter detects that the steel plate is discharged from a finish mill, a turning head steel plate straightening mode is selected, the reverse correction is synchronously selected, and the state enters a semi-automatic mode; a set value of a model computer is requested, and the operation is performed by adding a head turning height according to the set value after receiving the set value; when a first grating is activated, the straightening sequence is started; when first and second gratings are activated, a position tracking and high pressure mode is started, and the steel is bitten with a speed of not higher than 0.7 m / s; when first, second and third gratings are activated, the steel plate enters a straightening machine, a steel plate stop button is pressed down to stop the steel plate, the high-pressure return is performed, and a roller gap is descended to the set position of the model computer; and when the position of the roller gap arrives at the set value of the model computer, the reverse correction is selected, and the forward straightening is performed to finish the straightening sequence. The method can set the roller gap according to the height of the steel plate turning head to guarantee normal steel biting and straightening effects.

The invention discloses a process method for preventing the narrow-edge bulging of a continuous casting billet. A plurality of rows of thermocouples are mounted on a wide-surface copper plate (2) anda narrow-edge copper plate. The method comprises the following steps: that step 1, molten steel enters a crystallizer (1) and the temperature is transmitted to thermocouples; step 2, the temperature of the copper plate is recorded by the thermocouples; step 3, whether the temperature of the thermocouples in the same column on the narrow-edge copper plate is reduced to be greater than or equal to 10 DEG C is judged, and if not, the step 2 is continuously returned; if yes, the step 4 is continuously executed; step 4, judging whether the number of the thermocouples meeting the condition in the step 3 is larger than or equal to 2, and if not, and the step 3 is continuously returned ; if yes, the step 5 is continuously executed; step 5, judging whether the temperature of the wide-surface copperplate is reduced to be greater than or equal to 10 DEG C, and the number ratio of the thermocouples is greater than or equal to 20%, if yes, the step 6 is continuously executed ; if not, the step 7 is executed; step 6, width adjusting is carried out, whether the start pulling speed is greater than the current pulling rate, if yes, the width adjusting is stopped, if not, the step 8 is executed; step 7, an alarm is generated by the bulging, the width adjusting is stopped, and the pulling speed is reduced; and step 8, generally, the alarm is generated, the width adjusting is stopped, and the pulling speed is reduced.

The invention discloses a flexible strip processing line suitable for producing various high-strength steel, which has the following configuration: decoiling, cleaning, heating, soaking and slow cooling stations are arranged sequentially to a gas jet cooling station and a water quenching cooling station; a reheating station is arranged on the rear of the gas jet cooling station; an overaging station or hot galvanizing station and coating normalizing and annealing station are arranged on the rear of the reheating station, and a movable bypass channel is connected with the reheating and overaging stations; then, final cooling and leveling stations are arranged, and oiling or passivating and other postreatment stations are connected to a coiling station so as to obtain finished products; an acid pickling and electroplating stations are arranged corresponding to the water quenching cooling station; and a connecting channel is arranged on the rear of the electroplating station, and is correspondingly connected with the reheating or directly connected with the passivating station and other posttreatment stations. The flexible strip processing line integrates production of common cold-rolled sheets, and hot dip galvanized and coating alloying annealed sheets and electroplating of Zn and Ni sheets, particularly superstrength cold-rolled sheets, galvanized sheets and hot dip galvanizedand coating alloying annealed sheets to one machine set so as to realize flexible production.

The invention discloses an automatic sugar coiling machine. The automatic sugar coiling machine comprises a frame; a cuter, a conveying belt, a central rotating disc and a shifting piece are arranged on the frame; a plurality of sets of coiling devices and sugar pressing devices which are in one-to-one correspondence are arranged on the surface of the central rotating disc; a sugar coiling pin is arranged in each coiling device; each sugar coiling pin can axially slide along the axis of the corresponding coiling device; an extruding tray is arranged in each sugar pressing device; each extruding tray can axially slide along the axis of the corresponding sugar pressing device; a sugar coiling sun gear rotating disc is fixedly arranged above the central rotating disc; a jacking sun gear rotating disc is fixedly arranged below the central rotating disc; the sugar coiling sun gear rotating disc is in mesh transmission with the coiling devices; and the jacking sun gear rotating disc is in mesh transmission with the sugar pressing devices. The automatic sugar coiling machine can automatically coil sugar sticks, and is high in production efficiency and good in product quality.