34results about How to "Improve work rate" patented technology

The invention relates to a ventilation system for a high-voltage frequency converter room in severe cold areas and a working method of the ventilation system. The ventilation system comprises a fresh air handling unit, a fresh air pipeline, an air supply pipeline, an air inlet pipeline, an air return pipeline, an inner exhaust pipeline and an outer exhaust pipeline. The fresh air handling unit is composed of a fresh air section, a first heating section, an air return section, a second heating section, a fan section and an air supply section. A fresh air electric regulating valve is arranged on the fresh air pipeline; the first heating section and the second heating section are provided with heaters, and the fan section is provided with a fan; an air return electric regulating valve is arranged on the air return pipeline; a natural air inlet electric valve is arranged on the air inlet pipeline; an inner exhaust electric control valve is arranged on the inner exhaust pipeline; an external exhaust air electric regulating valve is arranged on the external exhaust pipeline; the ventilation system can effectively solve the problems existing in temperature control of the high-voltage frequency converter chamber in severe cold and cold areas, and is simple and compact in structure, convenient to construct and use, suitable for various working conditions and climate conditions and remarkable in energy conservation and emission reduction effect.

The invention provides a novel four-roll hot mill roll bending device which comprises a working roll, a supporting roll, a rack, an operation side fixing block, a transmission side fixing block, a roll shifting cylinder, an operation side moving block and a transmission side moving block, bearing seats of the working roll and the supporting roll are in contact connection through a base plate, a hydraulic cylinder acts on the bearing seat of the supporting roll and abuts against the base plate, and the base plate is in contact connection with the hydraulic cylinder. The operation side fixing block and the transmission side fixing block are fixedly installed on the machine frame, the roll shifting cylinder is installed on the operation side fixing block, and one end of the roll shifting cylinder is connected with the operation side fixing block. The operation side moving block is arranged on the operation side fixing block in a sliding mode and connected with the roll shifting cylinder through a locking pin shaft. The transmission side moving block is arranged on the transmission side fixed block in a sliding manner; and the operation side moving block and the transmission side moving block are connected with the working roll bearing seat through the bearing seat locking device. Roll bending control is carried out on the supporting roll and the working roll at the same time, the surface quality and the yield of the plate blank are improved, and the key effect is achieved on production and efficiency improvement of a steel mill.

The invention belongs to the technical field of silicon steel smelting, and particularly relates to a method for producing silicon steel based on a preparation unit, which comprises the following steps of: (1) centering an outlet section, pressing a front coil of strip tail, positioning the strip tail in a double-cut shear, centering an inlet section, pressing a rear coil of strip head, positioning the strip head in the double-cut shear, shearing by the double-cut shear, moving a welding machine pressing plate, and splicing, performing hybrid welding; and (2) after the previous coil is unloaded, the belt wrapper runs to a working position, the leading tape is wound on the coiling machine, and two programs, namely an automatic mode and a manual mode, are additionally arranged in EPC (Electronic Program Control) input. The default EPC function of each roll of tape head adopts an automatic input mode, the EPC is automatically input, the manual input function needs to be started after a manual mode is manually clicked in an operation picture, and the EPC is manually input; and (3) the width specification of the base material is 1000-1300mm, and a leading tape with the width of 1000mm is adopted. The welding process is optimized, the condition for inputting the EPC centering function of the coiling machine is designed, and the production efficiency of a unit and the yield of a rolling mill are improved.

The utility model relates to the technical field of magnetic filtration, and provides a vertical magnetic filtration magnetic bar isolating and optimizing device which comprises a rack, the magnetic chains are arranged on the rack in a circulating conveying mode, the number of the magnetic chains is multiple, and the multiple magnetic chains are arranged on the rack at intervals; and the plurality of isolation pieces are arranged on the rack, and the isolation pieces are arranged between the two adjacent magnetic chains. By means of the technical scheme, the problems that in the prior art, due to the fact that the limiting blocks on the roller are prone to abrasion, attraction force between the magnetic bars is increased, and an oil scraping ring and a gear motor are prone to damage are solved.

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.

This invention discloses a high-precision centering and positioning steam-water nozzle for dual-section continuous casting, belonging to the field of metallurgical equipment technology. It includes a nozzle body, a connector, and a nozzle head. The nozzle body has a cuboid structure with a groove for connection to the connector, and two slots within the groove. One end of the connector is detachably equipped with the nozzle head, and the other end has a locking nut and a positioning pin. The locking nut is fixedly fitted onto the end of the connector, and the connector is threadedly connected to the groove on the nozzle body via the locking nut. Two positioning pins are symmetrically positioned on the end of the connector with the locking nut, and these pins are adapted to the slots within the nozzle body. The nozzle has a simple structure, is easy to use, reduces maintenance time when changing sections, and accurately, efficiently, and conveniently meets the installation requirements for the vertical dimension and centering accuracy of the nozzle head relative to the billet end face during production of different sections, ensuring the uniformity of secondary cooling of the continuously cast billet during actual production.

The application relates to a rectangular furnace bottom structure in the technical field of pyrometallurgical furnace equipment, and in particular to a rectangular furnace bottom structure. The rectangular furnace bottom structure comprises, from bottom to top, a heat preservation layer, a ramming layer, a safety layer and a working layer in sequence. The lower half of the heat preservation layer is filled horizontally, the upper half of the heat preservation layer is a structure symmetrically retreating to both sides, forming an arc-shaped surface, an arc-shaped ramming layer with a high middle and a low both ends is filled above the heat preservation layer, the safety layer and the working layer are sequentially built on the ramming layer, the upper surface of the working layer is arc-shaped with a high middle and a low both ends, a molten metal copper jacket is arranged on the adjacent furnace wall of the safety layer and the working layer, and a molten metal outlet is arranged in the molten metal copper jacket. The straight surface of the furnace bottom structure is changed into an arc surface, the structural strength and stability are high, the heat preservation layer and the working layer are closely contacted, the molten body leakage is prevented, the brick body expansion can be absorbed, the construction is convenient, the cost is low, and the rectangular furnace bottom structure is suitable for furnaces of different sizes.

The application provides a wear-resistant composite piercing mill head manufacturing method and a piercing mill head, and the manufacturing method comprises the following steps: S1, preparing a steel base head; S2, adopting a submerged-arc welding process to make a flux-cored wire cladded on a working cone surface and a nose end surface of the steel base head, so as to form a cladding layer with a thickness of 6-8 mm; and S3, pre-oxidizing the cladding layer of the steel base head at high temperature, so that the wear-resistant composite piercing mill head is obtained. The wear-resistant composite piercing mill head manufacturing method has a dense and uniform oxide film on the surface of the cladding layer of the piercing mill head, the oxide film is firmly combined with the cladding layer, and the existence of the dense and uniform oxide film can reduce the power consumption of a steel pipe piercing mill and prolong the service life of the piercing mill head.

This invention relates to a method for improving the bowl-shaped end face of drill collar steel after straightening, belonging to the technical field of drill collar steel production processes in the metallurgical industry. The technical solution is as follows: a seven-roll straightening method is used, with the reduction of the No. 1 and No. 3 upper and lower rolls being 4-5 mm, and the reduction of the No. 2 upper and lower rolls being 1-2 mm; the reverse bending amount is 15-16 mm; the straightening roll angles are: No. 1 upper and lower roll angle 29.5-30°, No. 2 upper roll angle 30-31°, No. 3 upper roll angle 29.5-30°, and lower roll angle 32-32.5°; the end of the straightened round steel is chamfered, with a chamfer angle of 30-45° and a chamfer length of 1-2 mm. The beneficial effects of this invention are: it can reduce the internal structural stress of the drill collar steel, ensure the hardness of the drill collar, and ensure that the bowl-shaped end face depth of the straightened drill collar steel is within 2 mm, avoiding cracking at the end face face during processing.

A wear-resistant lining plate of a cold-inlaid hard alloy jaw crusher comprises a lining plate base body, a plurality of grooves and bosses are arranged in the length direction of the lining plate base body at intervals, and inserting grooves and dovetail grooves are formed in the two ends of each boss. The wear-resistant lining plate has the positive effects that the inserting groove and the dovetail groove which are communicated with each other are formed in the lining plate base body, the hard alloy used for extruding materials is mounted in the dovetail groove in a matching manner, and the hard alloy is positioned through the alloy extrusion block in the inserting groove, so that the wear-resistant lining plate has the advantages that the wear-resistant lining plate is simple in structure and convenient to use, and the service life of the wear-resistant lining plate is prolonged. According to the lining plate, non-casting abrasion part installation on the lining plate is achieved, hard alloy serving as an easily-damaged part is more beneficial to disassembly, assembly and replacement by adopting the positioning installation mode, the whole lining plate does not need to be replaced, the labor intensity of workers is reduced, and the maintenance difficulty and cost are reduced; and the working condition requirements of high strength, high operation rate, long service life and low cost in the crushing industry can be met.

The present invention belongs to the technical field of dust purification, and specifically is a workshop dust purification device, comprising a base, a bottom shell body is fixedly installed in the middle of the base, an upper shell body is fixedly installed on the top of the bottom shell body, a dust inlet is fixedly installed on the top of the upper shell body, a water applicator is fixedly installed on the top of the inner wall of the upper shell body, a limited water box is fixedly installed in the middle of the inner wall of the upper shell body, and a return water component is arranged inside the water limit box; when the water-dust mixture in the separation cylinder accumulates to a certain amount, the water-dust mixture in the separation cylinder is squeezed by the pressing block component, and the water in the water-dust mixture will flow out into the water limit box through the water leakage port on the separation cylinder when the water-dust mixture is pressurized, and the outflowing water will flow into the return water device through a plurality of through pipes, and the return water device will send the discharged water back to the water applicator through the return water pipe, so as to recycle the water flow, reduce the waste of resources, and play a role in saving water resources.

The invention belongs to the technical field of steel plate finished product warehouse management, and particularly relates to a steel finished product warehouse informatization management method, which adopts and organically combines a code spraying automatic identification technology, a terminal acquisition system (including a handheld type and a fixed type) and an MES interaction system, greatly improves the information transmission and information management accuracy in warehouse-in and warehouse-out links, and improves the information management efficiency. The production and delivery efficiency is improved, and the labor intensity is reduced; the informatization management system for the finished steel product warehouse mainly has a finished product warehouse-in and warehouse-out function, a middle warehouse and stack transfer management function and a stocktaking function, the management function covers the whole process of logistics information of the finished product warehouse, a data interface can be reserved, and the data management function can be expanded; the information acquisition and artificial intelligence analysis technology is obtained through continuous learning, improvement and timely correction of the system on the basis of a large amount of field practice data, and is a learnable, editable and expandable system; based on the invention, the barrier-free transmission of real objects and information can be realized, the production and delivery efficiency is greatly improved, and the labor intensity is reduced.

The invention belongs to the technical field of high-speed wire rod rolling mills, and particularly discloses a high-speed wire rod pre-finishing mill module unit. According to the technical scheme, the pre-finishing mill module unit comprises an inlet sortie and an outlet sortie which are arranged in a box body with a steel bar inlet and a steel bar outlet, and steel bars pass through the steel bar inlet, are subjected to diameter reduction by the inlet sortie and the outlet sortie, are subjected to pre-finishing rolling and then are sent out from the steel bar outlet; wherein the input shaft forming the inlet sortie is driven by an inlet frame motor, and the input shaft forming the outlet sortie is driven by an outlet frame motor. The pre-finishing mill module has the characteristics of simplified structure and low equipment failure rate.

The application relates to a mill feeding sealing device and a mounting and dismounting method, and belongs to the technical field of mills, which comprises a supporting table, one side of the top of the supporting table is fixedly provided with an output motor, and the other side of the top surface of the supporting table is provided with a crusher, the crusher comprises a discharging chute plate fixedly arranged on one side of the top of the supporting table, opposite sides of the surface of the discharging chute plate are rotatably provided with power shafts through connecting shafts, one side of the top of the discharging chute plate is rotatably provided with a feeding chute plate, and a sealing assembly is arranged between the discharging chute plate and the feeding chute plate, the sealing assembly comprises two sealing rings arranged between the discharging chute plate and the feeding chute plate, the sealing ring structure is filled with substances inside, additional internal supporting force is generated when the sealing ring structure is extruded, the sealing ring and a matching surface can be kept in stable contact, the sealing reliability of a mill feeding position is remarkably improved, and material leakage is effectively prevented.

An ore pulp conveying pipeline elbow capable of prolonging service life belongs to the technical field of ore pulp conveying pipelines and is used for prolonging the service life of the elbow in the ore pulp conveying pipeline. According to the technical scheme, a deposition groove protruding outwards is formed in the pipe wall of an outlet straight pipe at the right-angle bending position of the elbow, the deposition groove is located in the outer wall, opposite to the lower end of an inlet straight pipe, of the outlet straight pipe, the two sides of the deposition groove protruding outwards are connected with the outer wall of the outlet straight pipe respectively, and the deposition groove is in a circular arc shape in the length direction of the outlet straight pipe. And the arc-shaped front end is in smooth transition connection with the front part of the outlet straight pipe. The abrasion problem of the elbow of the ore pulp conveying pipeline is thoroughly solved through a simple structure, ore leakage caused by abrasion of the elbow is avoided, the maintenance and replacement work of the elbow is reduced, the maintenance and production cost is reduced, the equipment operation rate is improved, and the production stability is guaranteed.

The utility model belongs to the technical field of cigarette equipment, and discloses an eighth wheel mold box for octagonal cigarette packets, which comprises a base plate, a mounting part is arranged at one end of the base plate, a mounting hole is formed in the mounting part, a mounting piece penetrates through the mounting hole to be connected with an eighth wheel, and a box clamping groove is formed in the other end of the base plate. A limiting part is arranged at the end, away from the mounting part, of the inner wall of one side of the box clamping groove, and a U-shaped groove is formed between the limiting part and the inner wall of the box clamping groove. The eight-wheel die box for the octagonal tobacco bales can limit the octagonal tobacco bales in the circumferential direction and the radial direction of the eight wheel, so that the octagonal tobacco bales are better fixed, the situations of deformation, dislocation and lap joint of the octagonal tobacco bales caused by unstable fixation in the packaging process are avoided, the operation rate of equipment can be improved, potential quality hazards are reduced, and the production efficiency is improved. The production cost is reduced.

The invention belongs to the technical field of metallurgical continuous casting equipment, and particularly relates to a casting blank lifting device and a lifting method. The casting blank lifting device comprises a base, a support is arranged on the base, a winch is arranged at the top of the support, guide rails are symmetrically arranged on frames on the two sides of the support inwards, a steel wire rope is wound around the winch, a movable pulley lifting tool is connected to the end of the steel wire rope, and a movable roller way is connected to the lower portion of the movable pulley lifting tool. The two ends of the movable roller way are slidably connected with the guide rails. When the foundation elevation of the continuous casting equipment and the foundation elevation of the steel rolling equipment are different and greatly different, casting blanks produced through continuous casting can be directly lifted to the elevation of the roller way of the equipment in the follow-up process and then are transported to the follow-up equipment through the roller way, human participation is reduced, the labor cost is reduced, and operation is improved.

The present invention discloses an electrolytic cell loading and unloading integrated system and electrolytic cell loading and unloading control method, including: an electrolytic cell; a plurality of cathode plates, which are respectively arranged in the electrolytic cell in a removable manner; a plurality of anode plates, which are respectively arranged in the electrolytic cell in a removable manner; a longitudinal vehicle, which is movably arranged above the electrolytic cell in the longitudinal direction; a transverse vehicle, which is movably arranged on the longitudinal vehicle in the transverse direction and has an operation port for extracting and placing the anode plates and the cathode plates; a storage device for storing the cathode plates and the anode plates, which is arranged on the transverse vehicle; a cathode processing device for processing the cathode plates and an anode processing device for processing the anode plates, which are respectively arranged on the transverse vehicle; and a loading and unloading robot, which is arranged on the transverse vehicle. The electrolytic cell loading and unloading integrated system according to the present invention has low investment cost, low logistics cost and high tank operation rate.

The invention relates to the field of ore processing, and in particular to a method for accurately controlling the directional transformation of spodumene crystal forms, comprising S1, raw material preparation: obtaining spodumene raw materials with a diameter of less than 3 mm; S2, raw material preheating: heating by multiple cyclone separators to quickly make the temperature of spodumene reach 300-500 DEG C; S3, raw material heating: heating the preheated spodumene raw materials to quickly raise the temperature to 900-1000 DEG C; S4, precise temperature control-crystal form transformation: feeding into a dense phase fluidized bed, adding 100-1000g / t of calcium oxide, calcium carbonate or carbide slag at the same time, controlling the insulation time to 5-30min, and realizing precise control of the material temperature by external compensation electromagnetic heating at the same time, and controlling the temperature to between 950-1100 DEG C; S5, waste heat recovery: recovering the residual heat of the spodumene raw materials to cool the materials to 50-200 DEG C. The present invention realizes the directional crystal transformation of α-spodumene to β-spodumene, and has the characteristics of high conversion rate, low energy consumption, high operation rate, easy promotion and application, etc.

The invention discloses a multifunctional integrated unloading bin for kitchen waste treatment, comprising: a waste treatment box, the top and bottom of which are respectively provided with a waste inlet and a waste outlet; a slag bin, the slag bin is fixed at one side of the waste treatment box, and the top of the slag bin has a slag pouring inlet; a slag dumping screen mechanism, the slag dumping screen mechanism is fixed at the waste inlet, and is used to dump the slag into the slag pouring inlet; a bag breaking roller moving mechanism, the two ends of the bag breaking roller moving mechanism are respectively slidably connected with the two sides of the slag dumping screen mechanism; a draining spiral slurry conveying mechanism, the draining spiral slurry conveying mechanism is fixed at the waste outlet, and the two sides of the bottom of the draining spiral slurry conveying mechanism are respectively provided with a slurry outlet and a slurry outlet. The unloading bin has a high degree of automation, does not require manual sorting, and has multiple uses, saves energy consumption, and reduces the area occupied by the equipment.

The application discloses a rotary kiln refractory on-line repairing method, which can realize full-process mechanized operation and out-kiln operation, reduces labor intensity of workers, improves essential safety degree of operation, reduces artificial cost and safety protection cost, adopts self-reaction of materials such as aluminum sulfate, potassium sulfate, quartz and bentonite to repair the rotary kiln refractory, does not need to prepare refractory bricks or blocks, and has low overall material cost; the rotary kiln refractory repairing time is effectively reduced, the rotary kiln operation rate is improved; the refractory thickness can be supplemented at any time, long-time thin refractory operation of the traditional rotary kiln is avoided, the heat preservation capacity and thermal efficiency in the production process of the rotary kiln are improved, and the overall economy of the rotary kiln production is improved.

The invention belongs to the field of metallurgical industry, and relates to a direct current furnace bottom anode line automatic docking device which comprises a conductive plate connected with a power supply. The conductive tube is fixedly connected to a bottom anode of the direct current furnace and is electrically connected with the bottom anode, and when the conductive tube is in contact with the upper surface of the conductive plate, the bottom anode is electrified; a sliding sleeve is slidably arranged in the butt joint direction of the conductive tubes, a first butt joint head is fixedly arranged on the lower surface of the conductive plate, and a first butt joint seat matched with the first butt joint head is fixedly arranged on the top face of the sliding sleeve. An elastic piece is arranged in the sliding sleeve, and the elastic piece is configured to apply elastic force for moving towards the first butt joint head to the first butt joint seat after the first butt joint seat is pressed. According to the automatic butt joint device, automatic butt joint of the conductive tube and the conductive plate can be achieved, the conductive plate has the automatic adjusting capacity through the two butt joint mechanisms and the elastic piece below the conductive plate, even if the conductive tube is slightly inclined, the conductive tube can be attached to the surface of the conductive plate in a self-adaptive mode, and the butt joint accuracy and stability are guaranteed.

The preparation method comprises the following steps that S1, a base pipe is polished, oxide skin on the surface of the base pipe is removed, the surface of the base pipe is cleaned with absolute ethyl alcohol to remove stains, and the base pipe is dried with cold air; and S2, circulating cooling water is conveyed into the base tube, and meanwhile, under the action of a heat source laser beam, Ni-based alloy powder is cladded to the surface of the base tube. According to the composite pipe prepared through the method, the high-temperature molten salt corrosion resistance is effectively improved and is about 5 times that of a base pipe, the service life of a furnace pipe is prolonged, the operation rate of a generator set is increased, and the power generation cost of a waste incineration power plant is greatly reduced.

The utility model provides a kind of mining horizontal strong mixing machine, including fixedly arranged horizontal arrangement's barrel, the upper end of barrel is equipped with feed inlet, the lower side of barrel is equipped with discharge port, the central position of barrel is equipped with rotatable transmission shaft, multiple mixing tools are distributed on transmission shaft, and mixing tool includes rake tooth close to barrel inner wall position and is inclined;The utility model can improve the wear resistance of rake tooth during work by brazing wear-resistant alloy on the surface of rake tooth, which is beneficial to prolong its service life, reduce the frequency of maintenance and improve the operation rate of equipment production.In addition, by setting the angle-adjustable movable plate inside the feed inlet, it can prevent the material from directly impacting on the transmission shaft to prevent the transmission shaft and its bearing from being damaged, and it can also adjust the size of the feed inlet to adjust the amount of material entering the barrel per unit time to meet the needs of different material mixing.

The utility model belongs to blast furnace ironmaking technical field relates to a kind of blast furnace top plunger protection structure, including protective grate, the protective grate includes frame and the grid net being set in frame, grid net is formed by transverse and longitudinal staggered grate bar welding, further including wear-resistant protection block, wear-resistant protection block is provided with the structure of insertion slot in lower end face, and the grate bar is inserted in insertion slot. The blast furnace top plunger protection structure of the utility model, by the installation of wear-resistant protection block, the wear resistance of protective grate has been significantly improved. Compared with before optimization, under the same production condition, the wear rate of wear-resistant protection block is significantly reduced, effectively protects the protective grate, prolongs its service life.

The invention discloses a nano coating for a cold rolling tension roller with wear resistance and roughness reduction resistance, characterized in that: the tension roller surface is coated with a nano protective layer, the nano protective layer is a metal ceramic composite coating, the metal ceramic composite coating includes a nano bottom layer, a nano transition layer and a nano ceramic surface layer, and the nano bottom layer, the nano transition layer and the nano ceramic surface layer are sprayed in sequence from the inside to the outside. The cold rolling tension roller with a nano coating for wear resistance and roughness reduction resistance provided by the invention has a nano coating composite material with wear resistance and roughness reduction resistance, the composite material has good physical and chemical properties, can improve the bonding ability of the coating and the substrate, and at the same time improves the wear resistance and roughness reduction resistance of the tension roller surface, has mechanical load and high temperature resistance, and the service life is increased from the original 7 months to more than 2 years, which is much longer than the service life of the cold rolling tension roller in the prior art, effectively improves the unit operation rate and product quality, reduces the maintenance cost, and provides reliable guarantee for customers to reduce costs and increase efficiency.

The invention relates to the technical field of wide and thick plate rolling, in particular to a method for correcting the rigidity of a rolling mill and controlling the plate shape, which comprises the following steps of: acquiring rolling force values calculated in the last but one pass and the last but one pass, roll gap calculated values, actually measured rolling force values and actually measured roll gap values; calculating a pre-calculated rigidity value and an actually measured rigidity value; calculating a rolling mill rigidity deviation judgment coefficient; if the rolling mill rigidity deviation judgment coefficient exists, the rigidity compensation adjustment coefficient is corrected, and rolling force calculation is executed based on the corrected rigidity compensation adjustment coefficient; otherwise, calculation is executed according to the set rolling force. The method has the advantages that through real-time monitoring and deviation compensation of the rigidity of the rolling mill, plate shape fluctuation caused by equipment aging or working condition changes is effectively reduced; the rolling force deviation of the last pass is stably controlled within 60 tons, and the plate shape qualification rate is increased; and by introducing a rigidity fluctuation identification and compensation mechanism, instability factors in the rolling process are reduced.

The application provides a micro-nano ceramic particle reinforced die steel with high impact performance and a preparation method. The preparation method comprises the following steps: putting TiAl alloy powder, BN powder and C powder into a mixing machine to obtain a mixture 1, and using pure aluminum strip to coat the mixture 1 to obtain a wire A; the wire A is subjected to buffer segmented electric explosion 1 to obtain a mixture 2; putting NbAl alloy powder and B4C powder into a mixing machine to obtain a mixture 3, and using pure aluminum strip to coat the mixture 1 to obtain a wire B through coating forming 2; the wire B is subjected to buffer segmented electric explosion 2 to obtain a mixture 4; the mixture 2 and the mixture 4 are coated by using stainless steel strip through coating forming 3 to obtain a wire C; the die steel is melted into a molten steel, the wire C is added into the molten steel, and then vacuum degassing, electroslag remelting, high-temperature diffusion, multi-directional forging and heat treatment are carried out to obtain the micro-nano ceramic particle reinforced die steel with high impact toughness. The longitudinal unnotched impact energy of the die steel is 578.9-601.6 J, the transverse unnotched impact energy is 576.7-590.9 J, and the isotropy is 0.96-0.99.

The utility model relates to a multi-channel pinch roll device which comprises a pinch roll body, the pinch roll body comprises a lower roll structure, the lower roll structure comprises a lower roll body, a central shaft of the lower roll body is horizontal and is perpendicular to the conveying direction of rolled pieces, the lower roll body is connected with a rotation driving structure, and the lower roll body is further connected with a lower roll adjusting structure. A plurality of upper roller structures capable of moving and adjusting in the direction of the center axis of a lower roller body are arranged above the lower roller structure at intervals, each upper roller structure comprises an upper roller body, and each upper roller body is independently connected with an upper roller adjusting structure capable of driving the upper roller body to ascend and descend. An inlet conduit and an outlet conduit are respectively arranged on two sides of the lower roller body. The upper roller structure can be used for conveying rolled pieces, assisting a rolling mill in gripping and assisting in shearing in slitting bar production, solves the problem that the rolled pieces in various slitting rolling channels are different in diameter and cannot be clamped at the same time, can also be used for conveying and clamping round bars, meets clamping of different specifications by adjusting the upper roller structure, reduces replacement times of the roller rings, and improves production efficiency. And the non-production time is shortened.

The utility model relates to an ammonium polyvanadate slurry pipeline filter, and belongs to the technical field of chemical medium filtration in the metallurgical industry. According to the technical scheme, the filtering device comprises a filtering container (1), an upper sealing cover (2), a feeding connector (3), a blow-off pipe (4), a discharging connector (5) and an exhaust pipe (6), the upper sealing cover (2) is arranged on the filtering container (1), the exhaust pipe (6) is arranged on the upper sealing cover (2), the feeding connector (3) and the blow-off pipe (4) are arranged on one side of the filtering container (1), the discharging connector (5) is arranged on the other side of the filtering container (1), a filtering plate (9) is longitudinally arranged in the filtering container (1), and the filtering plate (9) is arranged in the filtering container (1). And round holes (12) are uniformly formed in the filter plate (9) as filter holes. The ammonium polyvanadate slurry filter has the beneficial effects that the ammonium polyvanadate slurry can quickly pass through the filter, the conveying flow of a pipeline medium is not influenced, large impurities which are easy to block an impeller in a solution can be effectively filtered, and the impeller is prevented from being blocked.