49results about How to "Stable production rhythm" patented technology

The invention discloses a production process of phosphorated high-strength gapless atomic steel. The production process of the phosphorated high-strength gapless atomic steel comprises the working procedures of molten iron desulphurization, converter smelting, RH vacuum treatment and conventional slab continuous casting. According to a method, a continuously cast billet which meets a requirement and has no any defects is produced by adopting phosphorated high-strength gapless atomic steel which is produced by a converter of which the nominal capacity is below 110t and through process measures of the control of the non-turning-down direct steel tapping of the converter, the reduction of the temperature drop from the converter to a steel ladle, the quick, accurate and stable control of carbon content by adopting a vacuum mechanical pump, the stabilization of a production rhythm, a constant pulling rate and the like; a high-quality hot-rolled coiled plate is produced in a hot rolling manner; and a high-quality continuously annealed product is finally produced through cold rolling. According to the method, the continuously cast billet which meets the requirement and has no the any defects is produced through controlling the process parameters of each working produce; the high-quality hot-rolled coiled plate is produced in the hot rolling manner; and the high-quality continuously annealed product is finally produced through the cold rolling.

The invention relates to an automatic logistic conveying device for machining an end face of a lift guide rail. The automatic logistic conveying device comprises a feeding rack, and is characterized in that a feeding turnover mechanism is arranged at the output end of the feeding rack; and a step fixing rack is arranged at the output end of the feeding turnover mechanism. Meanwhile, a discharging turnover assembly is arranged at the output end of the step fixing rack; and lathe feeding and discharging racks are distributed on the step fixing rack. Thus, the labor intensity of workers can be reduced, and the production enthusiasm can be improved. Meanwhile, the transporting and turning-over frequency of products in a process can be reduced, so that the product collision defect is reduced, and the product quality is improved. Furthermore, the labor participation in a product manufacturing process is further reduced, and the influence on the product quality due to factors, such as human mood, can be reduced. More importantly, the automation of an assembly line is improved, and the risk and the hidden danger of influencing the production by staff variation can be reduced. Moreover, the layout is more compact, the production beat is stable and consistent, and the entire production image is improved.

The invention discloses a ladle nozzle applied to the steel casting technology and particularly relates to a ladle nozzle capable of improving the automatic casting rate. A variable-diameter stuffing sand flowing channel is arranged at an upper water inlet. The upper water inlet is composed of an upper portion and a lower portion, and the inner diameter of the upper portion of the upper water inlet is larger than that of the lower portion of the upper water inlet. By means of the ladle nozzle, upper arch drainage sand piles are not produced, flowing of stuffing sand is facilitated, and the automatic casting rate is improved, the defect of manual oxygen burning casting in the prior art is overcome, the molten steel automatic casting rate is improved, the production rhythm is stabilized, effects of oxygen burning on the quality of molten steel are reduced, residual slag of steel ladles is reduced, and the like.

The invention relates to an automatic anti-collision device for packaging machine platens. The automatic anti-collision device comprises a PF wire transmission chain, a C-shaped hook, a clamping claw, a PF wire fixing support, a PLC, the packaging machine platens, a photoelectric detection device and an external alarming device. The C-shaped hook is fixed to the PF wire transmission chain in a hung manner. The packaging machine platens are arranged on the packaging machine base below the C-shaped hook. The clamping claw and the photoelectric detection device are fixedly mounted on the PF wire fixing support. The external alarming device is arranged on one sides of the packaging machine platens. A reserved platen opening is formed in the center axis of the top of each packaging machine platen and allows the C-shaped hook in the normal shape at the normal position to pass. The photoelectric detection device is arranged over the reserved platen openings. The photoelectric detection device and the external alarming device are both electrically connected with the PLC. According to the automatic anti-collision device, the position and the shape of the C-shaped hook can be detected automatically, and it is guaranteed that the coil extrusion operation by the platens is prohibited under the risky condition.

The invention discloses a method for producing clean steel through RH. The method for producing clean steel through RH comprises the following steps that (1) tapping from a converter in a boiling or semi-boiling mode is conducted, and then steel enters an RH station; decarburization is conducted after temperature measurement and oxygen determination are conducted, after carbon is decarburized to a target value, the temperature measurement and oxygen determination are conducted; (2) aluminum is one-time added according to oxygen activity, the objective adding amount is 0.003%-0.007% more than the upper limit of the weight percentage of the aluminum; while adding the aluminum, slaked lime is added to a vacuum chamber through an overhead bunk, wherein the adding amount of the slaked lime is 0.4-0.6 kg per ton of steel, circulation is conducted for 3-5 min, and the temperature measurement and oxygen determination are conducted; and (3) when the oxygen activity is less than 0.0010%, the aluminum is not added any more, or the aluminum is replenished; the rest alloy materials are added and circulated for 3-5 min; then the temperature measurement and oxygen determination are conducted for ensuring that hydrogen content is less than 0.00015%, vacuum is eliminated, and then steel is moved out; still standing for 15-30 min and pouring on a machine are conducted. Total oxygen of the IF steel billet treated in this way decreases averagely 0.0005%-0.0008%, the size of the maximum inclusion is significantly reduced, and cleanliness is improved obviously.

The invention relates to a secondary cast-on process for continuous-casting tundishes and belongs to the technical field of continuous casting of the metallurgical industry. According to the technical scheme, the process comprises the steps that (1), before casting of the tundishes is stopped, slagging treatment is conducted on the tundishes; (2), when the liquid steel level of the tundishes remains at 200 mm, the remaining one to two middle streams of water gaps are cast continuously; (3), when the tundish liquid steel level is at 10-20 mm, casting of the tundishes is stopped; (4), the tundishes are baked, the baking temperature ranges from 1,100 DEG C to 1,300 DEG C, and the baking time ranges from 45 minutes to 180 minutes; (5), after baking of the tundishes is completed, liquid steel in steel ladles is injected into the tundishes; and (6), the liquid steel level of the tundishes is greater than 300 mm, and secondary casting is conducted on the tundishes. The secondary cast-on process has the beneficial effects that the temperature loss of the tundishes is reduced, the service life of the tundishes is guaranteed, the consumption of continuous-casting refractory is lowered, and the smooth production of iron and steel enterprises is guaranteed.

The invention discloses a method for improving the self-opening rate of drainage sand. A nitrogen purging part is provided on the basis of forming a drainage sand adding device into a closed space, soas to ensure that the drainage sand is dry and pure. A positioning support is disposed on a steel ladle nozzle to control the uniform addition of drainage sand. The method can solve problems such asdamping and agglomeration of the drainage sand, dust fall, unstable addition amount, and poor molding, achieves a stable self-opening rate more than 99%, and ensures a stable production rhythm and product quality.

The invention relates to a method for producing titanium microalloyed Q355B hot-rolled strip steel under a non-refining condition. The method is characterized in that through converter blowing and steel ladle argon blowing, components of a ladle sample are controlled to meet the requirements that C is in the range of 0.15%-0.20%, Si is in the range of 0.06%-0.15%, Mn is in the range of 0.35%-0.55%, S is less than or equal to 0.030%, P is less than or equal to 0.030%, Als is in the range of 0.020%-0.030%, and Ti is in the range of 0.030%-0.050%. Through continuous casting of a thermal expansion type asbestos gasket and control of the heating temperature being 1220-1240 DEG C, the finish rolling starting temperature being 1065-1115 DEG C, the finish rolling temperature being 930-1030 DEG C, the finish rolling temperature being 840-880 DEG C and the curling temperature being 605-635 DEG C, ferrotitanium is added under the condition of no refining furnace, so that the alloying cost is reduced, the constant-speed yield of the titanium alloy is guaranteed, then the inclusion content is reduced, and the product quality is guaranteed.

The invention relates to a plate slab flame spray gun cutting height control system which comprises a cutting machine rail, a flame cutting machine, a flame cutting trolley, a spray gun, a pneumatic cylinder, a camera and a process control system, wherein the flame cutting trolley is arranged on the flame cutting machine; the pneumatic cylinder is mounted on the flame cutting trolley; and the camera is used for shooting the spray gun and spray gun flame. The system using method comprises the following steps: acquiring a distance from a nozzle of the flame spray gun to a point with the highest flame temperature in real time by utilizing the camera; comparing the acquired distance with a vertical distance from the nozzle of the flame spray gun to a midpoint position of a casting blank in a thickness direction; and according to a comparison result, by a computer, controlling the piston type flame spray gun to move up and down to carry out regulation so as to guarantee that the distance between the nozzle of the flame spray gun and the point with the highest flame temperature is equal to the vertical distance between the nozzle of the flame spray gun and the midpoint position of the casting blank in the thickness direction in real time and to guarantee that a high-temperature part of the outer flame of the flame spray gun is sufficiently utilized to heat a slab, thereby fulfilling the aims of promoting plate slab cutting quality and stabilizing the continuous casting production rhythm, and greatly reducing labor intensity of field personnel.

The invention discloses a single-hook and double-hook conversion type hook head of hoisting equipment. The single-hook and double-hook conversion type hook head comprises a double-hook hook head connected to the hoisting equipment, wherein the lower end of the double-hook hook head is detachably connected with a single-hook hook head; two connecting pieces are arranged on the upper portion of the single-hook hook head, and when the single-hook hook head is connected to the double-hook hook head, the two connecting pieces are clamped in grooves of the double-hook hook head correspondingly; and each connecting piece is a convex hanging rod, a hook or a hanging ring. According to the single-hook and double-hook conversion type hook head of the hoisting equipment, the utilization rate of the 80T crown block in the production process can be improved; and particularly, after finished steel coil transportation equipment breaks down, an anchor-head-hook hook head can be quickly converted into the single-hook hook head, and the single-hook hook head can be matched with a C-shaped lifting appliance to participate in the operation activity of lifting finished steel coils from a coiling machine, so that the production rhythm is stabilized, the production guarantee is improved, the accident potential of production interruption is completely eradicated, and stable and smooth production is ensured.

The invention discloses an automatic material feeding system of sawmill, which belongs to the field of wood processing. A wood clamping and feeding device (3) has chain wheel transmission mechanisms (5) on both sides of a wood material (4) to be processed, and the wood material (4) to be processed is clamped and fed through chains (6) of the two chain wheel transmission mechanism. By adopting theabove technical scheme, the automatic material feeding system can achieve automatic and continuous feeding of the wood material to be processed, thus improving the production efficiency, remarkably stabilizing the production rhythm, lowering labor intensity, achieving convenient operation and improving the work condition. The equipment has reasonable structure and stable and reliable clamping andfeeding of the wood material to be processed.

The invention relates to a device for prolonging the service life of an inclined grate liner plate, in particular to the device for prolonging service life of inclined grate liner plate, which is used in a steel pipe production process, and belongs to the field of steel pipe production. One side of the inclined grate is fixedly provided with a tank body, a short steel pipe is arranged in the tank body, and the upper surface of the short steel pipe and the surface of the inclined grate liner plate are arranged at the same horizontal line. The tank body for arranging the short steel pipe is arranged on the side end of the inclined grate, the trouble of exchanging the whole liner plate due to the fact that a pit is worn in the liner plate on the front end inclined grate of a single feeder in the feeding process is avoided, the problem of incapability of feeding due to the fact that the steel pipe stops on the liner plate groove of the inclined grate and cannot enter the material taking surface of the single feeder is solved by only rotating the short steel pipe in periphery direction to deflect the short steel pipe from the groove position. The cost is saved, the rhythm of production is stable, and the labour load of maintaining workers is reduced.

The invention discloses a method, a device, a storage medium and a computer device for detecting the liquid level of a thin strip continuous casting cloth ladle. The method includes: obtaining the total weight of the flow bag, the internal size and structure of the flow bag, and the temperature of the molten steel in the flow bag, and performing a peeling and weighing operation on the total weight of the flow bag to obtain the weight of the flow bag. The net weight of molten steel; according to the internal size structure of the flow distribution bag, the segmental function of the volume of the flow distribution bag with respect to the liquid level of the flow distribution bag and the first-order segmental function of the liquid level of the flow distribution bag with respect to the volume of the flow distribution bag; The temperature of the molten steel and the net weight of the molten steel in the flow distribution bag are used to obtain the volume of molten steel in the flow distribution bag, and the volume of molten steel in the flow distribution bag is input into the first-order piecewise function of the liquid level of the flow distribution bag with respect to the volume of the flow distribution bag , to obtain the approximate liquid steel liquid level in the flow distribution bag; input the approximate liquid steel liquid level in the flow distribution bag into the piecewise function of the volume of the flow distribution bag with respect to the liquid level of the flow distribution bag to perform a step-by-step convergent approximation calculation, and obtain the distribution Liquid steel level in ladle.