41results about How to "Reduce temperature drop" patented technology

The invention relates to the technical field of metallurgy, in particular to a production method for reducing casting blank cracks, which comprises the following procedures: (1) pre-desulfurizing molten iron; (2) smelting in a converter; (3) LF refining; (4) RH refining; (5) slab continuous casting; and (6) hot charging and rolling. By optimizing the chemical components and the mass percentage of the continuous casting billet and regulating and controlling the technological parameters of multiple procedures such as converter smelting, LF refining, RH refining, slab continuous casting and hot charging rolling, the austenite grain size in the microstructure of the surface layer of the continuous casting billet is refined, the high-temperature plasticity of the continuous casting billet is improved, and cracks on the surface of the continuous casting billet are reduced.

The invention discloses a nickel-based powder high-temperature alloy bar extrusion structure which comprises an end cover, a powder high-temperature alloy ingot and a base, the powder high-temperature alloy ingot is located between the end cover and the base, the end cover is of a rotary body, the upper portion of the rotary body is of a chamfering structure, the lower portion of the rotary body is of a cylindrical structure, and an end cover through hole is formed in the center of the rotary body. An end cover through hole is formed in the middle of the end cover, and the diameter of the end cover through hole is 50-120mm; the assembling positions of the end cover and the powder high-temperature alloy ingot are connected in a segmented welding mode in the circumferential direction, and the welding positions are wrapped with high-temperature-resistant fiber blankets. The invention further discloses an extrusion method of the nickel-based powder high-temperature alloy bar extrusion structure. The technical problem that the surface of the powder high-temperature alloy bar cracks is solved, and the utilization rate of the powder alloy bar is increased.

The invention discloses a stepped casting system for an engine cylinder block, and belongs to the field of casting. According to the technical scheme, the stepped casting system for the engine cylinder block comprises a main pouring gate part, the main pouring gate part comprises a transverse main pouring gate, a plurality of branch pouring gate parts are arranged below the transverse main pouring gate, each branch pouring gate part comprises a first vertical pouring gate, the first vertical pouring gates are connected with middle pouring gates, the other ends of the middle pouring gates are connected with branch pouring gates, and the branch pouring gates are connected with the transverse main pouring gate. The shunting pouring gate is vertically arranged, the lower end of the shunting pouring gate is connected with a first inner pouring gate, and the upper end of the shunting pouring gate is connected with a second inner pouring gate. In the casting process, liquid metal is divided into two layers and enters a cavity in a stepped mode, scouring to the cavity is relieved, liquid metal mold filling is stable, exhausting of the cavity is facilitated, after mold filling, the temperature of the liquid metal at different height positions is guaranteed, the liquid metal mold filling speed is high, the liquid metal mold filling is stable, and solidification is balanced; the occurrence of slag holes, air holes, sand holes and shrinkage porosity defects which are not easy to find is greatly reduced, and the casting yield is improved.

The invention discloses a mold casting molten steel covering agent and a preparation method thereof, and the mold casting molten steel covering agent comprises the following components in parts by mass: 50-65 parts of expanded perlite, 6-10 parts of alumina powder, 2-5 parts of magnesium oxide powder, 25-35 parts of calcium oxide powder, 1-2 parts of fluorite powder, 2-5 parts of ferric oxide, 30-40 parts of porous calcium zirconate, 5-10 parts of calcium carbonate powder and 3-5 parts of acidified graphite. According to the invention, the proportion of carbon element and hydrous aluminosilicate in the covering agent is reduced, the recarburization effect on molten steel is reduced, and the oxidation resistance and thermal insulation capacity of the covering agent are improved.

The invention relates to the field of catalysts, in particular to a catalyst composition, application thereof and a low-carbon alkane dehydrogenation method. The catalytic composition comprises a supported catalyst, a first auxiliary agent component and a second auxiliary agent component, the first auxiliary agent component comprises a first silicon and / or aluminum compound containing a modifying element, and the second auxiliary agent component comprises a second silicon and / or aluminum compound; the modified element comprises at least one of an IA group element, a IIA group element, an IB group element, a IIB group element, a VB group element and a VIII group element. By introducing the first aid component and the second aid component, the heat transfer efficiency of the reaction is greatly improved, and in the dehydrogenation reaction stage, the heat absorption capacity of a catalyst bed layer for dehydrogenation of low-carbon alkane such as propane is reduced, the temperature drop is reduced, and the catalytic efficiency is improved.

This invention relates to a method for producing thin-gauge low-density steel sheets using a lap-rolling process. The chemical composition of the steel sheet, by mass percentage, is: C: 0.70–1.20%, Si: 0.10–0.50%, Mn: 16.00–24.00%, P: ≤0.015%, S: ≤0.003%, Al: 7.00–10.00%, Ni: 4.00–8.00%, Nb+Ti: 0.02–0.20%, with the balance being iron and unavoidable impurities. The method includes the following steps: billet preparation, billet compositing, billet welding, compositing billet heating, compositing billet rolling, steel sheet separation, and compositing billet straightening. A low-density steel intermediate billet of a certain thickness and identical length and width is selected as the lap-rolling billet. After welding, thin-gauge low-density steel sheets with a thickness of 3–6 mm and a width of 2000–3500 mm are produced on a medium-thick plate mill. The steel plate has an Fe-Mn-Al-C series composition and a density of 6.90-7.10 g / cm³. 3 The finished steel plate has a yield strength ≥1000MPa, tensile strength ≥1100MPa, elongation ≥20%, and Charpy V impact energy ≥20J at -40℃. The rolled steel plate has good uniformity in shape, thickness tolerance ≤±0.25mm, and flatness ≤4mm / m.

The utility model discloses a circumferential auxiliary hot air heating smoking set. The circumferential auxiliary hot air heating smoking set comprises an electromagnetic coil assembly and a vacuum thermal insulation heating module. The electromagnetic coil assembly comprises a tower type electromagnetic coil (7) which is gradually thickened from top to bottom, an upper coil mounting plate (3) at the upper part of the electromagnetic coil, and a lower coil mounting plate (4) at the lower part of the electromagnetic coil; the vacuum thermal insulation heating module comprises a smoke cup (10) and a thermal insulation sleeve (8) on the periphery of the smoke cup (10), and a vacuum space is formed between the outer wall of the smoke cup (10) and the inner wall of the thermal insulation sleeve (8). A plurality of arc-shaped grooves (1001) and rectangular grooves (1002) are formed in the inner wall of the cigarette cup (10); an outer heating sheet (1401) is arranged in each arc-shaped groove (1001); an inner heating sheet (1402) is arranged in each rectangular groove (1002); the electromagnetic coil assembly is arranged on the periphery of the vacuum thermal insulation heating module in a sleeving mode.

This invention discloses a method for eliminating internal cracks in 304L stainless steel medium-thick plates used in nuclear power plants, comprising: controlling the chemical composition of molten steel to C: 0.01-0.03%, Si: 0.3-0.7%, Mn: 1.5-1.9%, Cr: 18.05-19.5%, Ni: 9.05-11%, P≤0.03%, S≤0.005%, N: 0.02-0.08%, and controlling the ferrite content in the steel to 2.8-7.7%; and continuously casting in the continuous casting process. The cooling water volume in the secondary cooling section is controlled at 0.55–0.65 L / kg. In the hot rolling process, the slab heating temperature is controlled at 1248℃–1258℃, and the holding time is controlled at 1.8–2.5 min / mm based on the slab thickness. The final rolling temperature is controlled above 1040℃. In the heat treatment process, the hot-rolled steel plate undergoes solution treatment, with the solution treatment temperature controlled at 1065–1075℃ and the holding time controlled at 1.5–2.0 min / mm based on the steel plate thickness. This invention controls the ferrite content within a reasonable range, reducing local ferrite aggregation, thereby effectively solving the cracking defects caused by local ferrite aggregation in the hot rolling process of 304L stainless steel medium-thick plates for nuclear power applications.

A low-pressure casting mold for an aluminum casting with a complex inner cavity comprises inserts, the inserts comprise an upper mold insert and a lower mold insert, the upper mold insert and the lower mold insert are each provided with a plurality of independent mold cavities, the upper mold insert and the lower mold insert form a plurality of independent closed mold cavities after mold closing, and the upper mold insert and the lower mold insert are arranged in the closed mold cavities. Each closed cavity is provided with a group of cooling devices and a sprue, the sprues of all the closed cavities are connected with the same sprue basin, the sprues are located at the bottoms of all the closed cavities and supported on a sprue basin cover arranged above the sprue basin, and projections of all the sprues in the vertical direction fall into an opening area at the upper end of the sprue basin. The molten aluminum rises into the pouring basin through a liquid rising pipe of the low-pressure casting machine and enters each independent closed cavity through a pouring gate; and the sand core is arranged in the closed cavity and is used for forming an inner cavity in the casting.

The invention discloses a split type capping device for a hot-metal bottle. The split type capping device comprises two movable support mechanisms, two fixed bases and a bottle cover. The two movable support mechanisms are correspondingly arranged, the bottoms of the two movable support mechanisms are movably connected with the two fixed bases, and telescopic devices connected with the fixed bases are arranged on the two sides of each movable support mechanism. The tank cover comprises two half tank cover units, each half tank cover unit is connected to the top of one movable support mechanism, and the two half tank cover units are closed and opened through stretching and retracting of the telescopic device. According to the split type capping device for the molten iron tank and the molten iron tank car provided with the split type capping device, the structure is compact, operation is convenient, the occupied space is extremely small during operation, split type automatic capping of the molten iron tank car is achieved, meanwhile, the heat loss of molten iron is effectively reduced, smoke emission is reduced, and the safety during production is improved.

This utility model relates to the field of aluminum alloy production technology, specifically to an online degassing device for aluminum alloy production. The technical problem it aims to solve is to overcome the poor safety of slag removal in existing technologies. This is mainly achieved through the following technical solution: An online degassing device for aluminum alloy production includes a primary degassing chamber, a buffer chamber, and a secondary degassing chamber. The primary and secondary degassing chambers are equipped with heat-insulating covers on their tops. Each heat-insulating cover has multiple degassing devices. Each degassing device includes a ventilation component and two slag discharge components. The ventilation component includes a rotating motor, a rotating rod, and a rotating wheel, and is also connected to a gas supply device. The slag discharge components include a slag removal plate, a slag removal rod, and a slag removal drive component. Exhaust pipes are connected to the rear sides of the primary and secondary degassing chambers. The two degassing chambers ensure effective degassing. The degassing devices can safely remove slag without opening the covers and separate the slag promptly after removal. A buffer chamber is also provided to reduce the impact of temperature fluctuations.

This invention discloses a vacuuming structure, a semiconductor device manufacturing apparatus, and a manufacturing method thereof. The vacuuming structure, located at the bottom of a process chamber, includes: a vacuuming plate disposed below a heating plate within the process chamber, the outer edge of the vacuuming plate having an edge notch; a first bushing fitted onto the outer side of the vacuuming plate, the inner side of the first bushing having a first boss; and a rotating mechanism connected to the vacuuming plate, driving the vacuuming plate to rotate to adjust the opening of the vacuum port formed between the edge notch and its corresponding first boss. This invention not only reduces the temperature drop and temperature disturbance within the chamber caused by the vacuuming airflow, and improves temperature diffusion at the bottom of the heating plate, thereby enhancing the uniformity and stability of the temperature within the chamber and improving film formation quality, but also features a simple structure, eliminating the need for heating energy consumption, thus reducing production and maintenance costs.

The invention discloses a gravity feeding chute for molten iron KR desulfurizer, comprising a feeding chute body, a feeding elbow, a feeding pipe, a compressed air pipe, a compressed air chamber and a compressed air nozzle; the upper port of the feeding elbow is welded and connected with the lower port of the feeding chute body; the feeding pipe is a tapered steel pipe, and the large port of the tapered steel pipe is welded and connected with the lower port of the feeding elbow; the upper port of the compressed air pipe is connected with a compressed air source; the compressed air chamber is an annular air chamber, arranged around the outer wall of the feeding pipe, and welded and connected with the lower port of the compressed air pipe; the compressed air nozzle is composed of a plurality of conical nozzles, which are uniformly distributed on the bottom surface of the compressed air chamber around the feeding pipe. The molten iron entrainment mixing amount of desulfurizers of different fine particle sizes and the desulfurization reaction interface area are increased, and finally the comprehensive purposes of reducing desulfurizer consumption, reducing desulfurizer feeding and escaping, shortening molten iron KR stirring time, stabilizing molten iron desulfurization effect, reducing slag iron loss and desulfurization molten iron temperature drop are achieved.

The utility model provides a quantitative feeding device for a vacuum die-casting machine and a feeding method of the quantitative feeding device, and belongs to the technical field of feeding devices. The feeding device comprises a vacuum exhaust system, a mold cavity, a melting cup, an alloy melt holding furnace and a punch. According to the feeding method, the principle of dynamic pressure difference and dynamic height difference is utilized, the quantitative weight is set, and precise aluminum alloy die-casting quantitative feeding is achieved in the mode that the pressure difference between the atmosphere and a mold cavity and / or melting cup vacuum and the liquid level height difference between the melting cup and an alloy melt heat preservation furnace are balanced. According to the utility model, the melting cup is communicated with the alloy solution holding furnace through the riser tube, the alloy solution in the melting cup is injected into the mold cavity through the punch, and the liquid suction process is the exhaust process, so that the filling rate can be improved or completely canceled, the quantitative feeding and vacuum exhaust efficiency is greatly improved, the feeding and injection time is shortened, and the production efficiency is improved. The defects caused by temperature drop of conventional alloy feeding are avoided, the production efficiency is improved, and the equipment cost is greatly reduced.

The invention belongs to the technical field of industrial production, and provides a wide-load long-transmission steam pipe network system and an operation method thereof. A steam turbine generator unit is connected with a main pipe through a rated parameter steam extraction pipe and a high parameter steam extraction pipe which are connected in parallel; a steam source in a rated parameter steam extraction pipe and a steam source in a high parameter steam extraction pipe are mixed to obtain a steam source higher than rated parameters, especially pressure, so that the specific volume of steam is reduced, if the flow speed in a pipe network is kept unchanged, a large pipe diameter is not needed, the pipe diameters of a main pipe and a branch pipe can be reduced, and through pipe diameter optimization, the cost is reduced. Compared with the prior art, construction investment cost of a pipe network is effectively reduced, along with reduction of the pipe diameter, under the same heat preservation condition, the overall heat dissipation area of the pipeline is reduced, heat dissipation of the pipeline is reduced under low load, temperature drop is smaller, the requirement for lower flow load can be met, along with reduction of the pipe diameter, materials used by the pipeline are reduced, and due to reduction of the surface area, cost is reduced. The requirement for heat preservation is lowered, and the temperature of steam received by a user side can be guaranteed.

This utility model provides a ladle cover with an operating hole insulation device, relating to the field of iron and steel metallurgical technology. It includes a ladle cover body and a first and second insulation cover mounted thereon. The insulation cover consists of an asbestos layer and an iron plate covering its outer surface, and is larger than the corresponding operating hole. It has sealing flanges on its edges to achieve airtight insulation when closed. The oxygen lance operating hole insulation cover is installed below the ladle cover via a hinged component, automatically opening and closing by gravity when the ladle is tilted. The diverting agent operating hole insulation cover is fixed by an arc-shaped hook device, and its opening and closing are controlled by external pulling. When closed, the locking part engages with the slot to lock it in place. This utility model and device significantly improve the ladle insulation effect, reduce the temperature drop of molten steel, reduce the heating time and energy consumption of the LF furnace, and shorten the smelting cycle.

The application discloses a method for rolling difficult-to-deform austenitic stainless steel by a double-furnace and -mandrel rolling mill, and relates to the technical field of iron and steel metallurgy. The method for rolling difficult-to-deform austenitic stainless steel by the double-furnace and -mandrel rolling mill optimizes the deformation distribution efficiency of the whole hot rolling process, reduces the temperature drop of the casting blank in the hot rolling process, and realizes balanced deformation in the whole process by reasonably distributing the deformation amount of the rough rolling area and the finishing rolling area. The strip steel passes through two rolling mills at the same time in single one-way rolling by adopting the double-furnace and -mandrel rolling mill, which is equivalent to completing two continuous deformations in a single pass, greatly improves the rolling efficiency, realizes rapid and stable rolling, and further reduces the deformation difficulty of the difficult-to-deform stainless steel. In addition, the on-line heating function of the hot coiling furnace makes the temperature of the edge of the strip steel stable in the appropriate hot working interval, optimizes the metal flow pattern, and reduces the risk of edge cracking from the root.

The invention discloses an insulator vulcanization molding equipment, comprising a clay feeding part, a hot pressing forming part and a loading and unloading transmission part; the hot pressing forming part comprises an upper mold, a lower mold and a power mechanism for driving the two to separate the molds, and a heating mechanism is integrated in the upper mold and the lower mold; the loading and unloading transmission part comprises two groups of support brackets distributed on both sides of the hot pressing forming part, and the support brackets can slide horizontally and longitudinally, and can be lifted and lowered in the vertical direction; the clay feeding part is arranged at the upper side of the upstream end of the hot pressing forming part. The insulator vulcanization molding equipment adopts an automatic loading and unloading design to realize automatic laying of clay, automatic arrangement and automatic unloading of core rods, without manual access to the mold, while improving efficiency, reducing the risk of scalding, and at the same time, through the positioning design of the core rod, ensuring the consistency of the thickness of the outer wrapping of the insulator to avoid cracks caused by uneven deformation.

The utility model relates to the technical field, in particular to a van heating compartment applied to alpine regions, which comprises a compartment frame and is characterized in that a sealing thermal insulation cover is arranged at the top of the compartment frame, an electric cylinder is arranged in the sealing thermal insulation cover, a pressing block is mounted on the lower side of the electric cylinder, and a side thermal insulation plate is arranged on one side of the pressing block. A top insulation board is installed on one side of the side insulation board, a bottom insulation board is arranged on the lower side of the top insulation board, a compartment door is arranged on one side of the bottom insulation board, and a heating pipe is installed on one side of the compartment door. The device has the beneficial effects that the output end of the electric cylinder extends out, so that the pressing block is indirectly driven to move in the direction close to the side heat preservation plate, the top heat preservation plate is inserted into one side of the side heat preservation plate, the top heat preservation plate and the side heat preservation plate are fixed through pressing of the pressing block, and then the bottom heat preservation plate is installed at the bottom in the compartment frame, so that heating in a compartment and closing of a compartment door are facilitated; by heating the heating pipe, the heating pipe dissipates heat into the compartment, so that the interior of the compartment is heated, and meanwhile, the heat preservation plate is convenient to disassemble and assemble.

The invention discloses a method for eliminating the edge peeling defect of high-magnetic-induction oriented silicon steel, and relates to the technical field of steel rolling, which comprises the following steps: descaling only once during rough rolling high-pressure water descaling, and descaling only once during rough rolling flat rolling mill descaling; on the basis that overflowing and slipping phenomena do not occur in rough rolling, the rolling speed of each pass of rough rolling is increased; and rough rolling side pressure control is carried out in the mode that side pressure is not carried out in the first pass, the side pressure amount in the third pass does not exceed the preset maximum side pressure amount, and the side pressure in the fifth pass does not generate the eju steel. According to the method for eliminating the edge peeling defect of the high-magnetic-induction oriented silicon steel, the rough rolling descaling mode and frequency are controlled, the rough rolling speed is controlled, and the rough rolling side pressure amount is controlled, so that the temperature drop in the rough rolling process can be reduced as much as possible, the dog bone height in the rough rolling process can be reduced as much as possible, and the edge peeling defect of the high-magnetic-induction oriented silicon steel is overcome. And therefore, the edge peeling defect of the high-magnetic-induction oriented silicon steel is eliminated, and the yield of the high-magnetic-induction oriented silicon steel is remarkably improved.

The invention discloses a heat treatment method for ensuring the quality of a contact part of a hot coiling spring and a mandrel, a spring bar is coiled on the mandrel after being heated to obtain the spring, and the heat treatment method is characterized in that the mandrel is preheated to 300-400 DEG C before the spring is coiled, the spring bar is heated to 950-1000 DEG C, then the spring bar is coiled on the mandrel, and meanwhile, the mandrel is subjected to air cooling; the temperature of the mandrel is kept at 300-400 DEG C; after improvement according to the technology, the structure of the contact position of the spring and the mandrel is obviously improved, the structure is finer and more uniform, and obvious ferrite and pearlite aggregation is avoided. The Rockwell hardness difference between the hardness of the spring inner ring contact mandrel part and the spring 1 / 2 radius part and the core part is not larger than 2, and the quality requirement of the spring is met.

This application discloses an upper-layer cold water guiding device and a strip steel cooling system, belonging to the technical field of guiding equipment. The upper-layer cold water guiding device is used to guide the upper-layer cold water on both sides of the upper cooling manifold. The upper-layer cold water guiding device includes a first guiding element and a connecting mechanism. The first guiding element has a converging channel and a guiding channel that communicate with each other. The converging channel extends along a first direction and is located below one side of multiple upper cooling manifolds along a second direction. The guiding channel extends along the second direction and is located below the interval area between two adjacent upper cooling manifolds. The first direction and the second direction are perpendicular. The first outlet of the guiding channel is located at the end of the guiding channel away from the converging channel. The connecting mechanism connects the upper cooling manifold and the first guiding element.

Embodiments of the present application provide a battery production system and a battery production method. The battery production system includes: a preheating apparatus, including preheating cavities, a first delivery mechanism being arranged in the preheating cavity, and the preheating cavity having a first charging door and a first discharging door; and a baking apparatus, including baking cavities, the baking cavity having a second charging door and a second discharging door, wherein the first delivery mechanism is configured to deliver the battery piece in the preheating cavity to the baking cavity through the first discharging door and the second charging door when the first discharging door and the second charging door are opposite and are both opened. The battery piece can be delivered from the preheating cavity to the baking cavity through the first delivery mechanism arranged in the preheating cavity in a short time, thus reducing the temperature drop of the battery piece during the delivery process, and avoiding the impact of the temperature drop on the process performance. Moreover, the delivery time of the battery piece is short, so the opening time of a cavity door can be shortened, the electric energy loss can be reduced, the delivery efficiency is high, and the production rhythm can be increased.

The invention discloses a method for quickly baking an alloy by using converter flue gas. According to the layout that the high aluminum iron is laid on the outer ring, the silicon iron is laid on the bottom and the top, and the manganese metal is laid in the middle, the three kinds of alloy are added into a baking oven, converter smoke and air are introduced into a jacket outside the baking oven for low-temperature heating, and then the high aluminum iron, the silicon iron and the manganese metal are subjected to heat preservation; and then the air inlet amount is gradually reduced for medium-temperature heating, compressed air is introduced into the baking box for purging, the air inlet amount is continuously reduced for high-temperature heating, and the baked alloy is immediately fed into a steel ladle. According to the method, through the design of alloy laying, sectional type baking, compressed air blowing and drying of the alloy through low-temperature drainage, medium-temperature moisture removal and high-temperature drying, the alloy can be rapidly dried within 5-10 min, the problems that after the alloy material is added into molten steel, a large amount of heat is absorbed, and hydrogen is increased in the molten steel are solved, the average temperature of the molten steel in the steel ladle can be increased, and the service life of the molten steel is prolonged. And the tapping temperature is reduced, and the alloy yield is increased.

The invention relates to the technical field of waste gas treatment and waste heat recycling, and discloses a waste heat recycling system for treatment of packaging bag printing waste gas. The thermal incinerator is used for treating VOCs waste gas, the hot water heat exchanger is connected with high-temperature flue gas of the thermal incinerator in a heat exchange mode, and the circulating water pipe network is communicated with the water side of the hot water heat exchanger and used for conveying hot water to the hot end for printing equipment. A heat preservation structure is arranged on the periphery of the discharging pipe; the heat preservation structure comprises a heat preservation layer arranged on the outer side of the discharging pipe and an outer protection layer arranged on the outer side of the heat preservation layer, and the heat preservation layer comprises a heat preservation coating formed by coating a heat insulation and preservation material; the outer protective layer comprises a straight-section outer protective pipe and a bent-section outer protective pipe, and a sealing structure for connecting the straight-section outer protective pipe and the bent-section outer protective pipe is arranged between the straight-section outer protective pipe and the bent-section outer protective pipe.

The application provides a factory site molten iron transportation automatic covering control method and system, which enables the torpedo ladle to complete covering of the heat preservation cover when leaving a work station, keeps the covering state when entering and leaving a parking point, and performs uncovering operation before work of the work station after entering the work station, and through the control authority of the torpedo ladle heat preservation cover, the vehicle local system, remote system and work station all have the control function of opening and closing the heat preservation cover, the authorities of various operation sites are set to different priorities, when an abnormality occurs, the system alarms and prohibits work of the work station. The application reduces temperature drop in the molten iron transportation process and reduces carbon emission, has important role in energy saving and environmental protection, and has great application prospect.

The invention provides a continuous welding system for moisture absorber heat exchanger production. The continuous welding system for moisture absorber heat exchanger production comprises a supporting frame, an upper side horizontal plate is arranged on the upper side of the supporting frame, a supporting table is arranged on the upper side of the upper side horizontal plate, a welding device is arranged on the supporting table, a welding head is arranged on the lower side of the welding device, and a horizontal moving device is located on the upper side of the supporting frame. And the two horizontal moving devices which are distributed left and right comprise first motors, rolling wheels and sliding horizontal plates. According to the continuous welding system for production of the moisture absorber heat exchanger, through precise cooperation of an electromagnet and a second motor, the height adjusting function is achieved, and the adaptability and precision of the system are greatly improved. The electromagnet can flexibly adjust the positions of the welding head and related parts, and the second motor provides stable rotating motion, so that the height of the system can be adjusted without being influenced in the rotating process.

The present application relates to the technical field of continuous casting process in steel metallurgy, in particular to a continuous casting ladle rotary table bottom argon blowing control device and a soft blowing inclusion removal method, which is provided with an argon blowing automatic butt joint mechanism and an argon blowing intelligent control switching device, realizes automatic butt joint of the continuous casting ladle rotary table ladle bottom argon blowing and automatic switching of the rotary arm argon blowing intelligent control mode, uses the existing ladle bottom blowing gas permeable brick to realize small flow static soft blowing in the pouring position of the continuous casting ladle rotary table and small flow dynamic soft blowing in the pouring process, completely replaces the existing technology LF refining later stage ladle soft blowing, overcomes the bottleneck problem of long LF refining time and the restriction of steelmaking production capacity improvement, improves the inclusion removal rate of the ladle bottom blowing gas permeable brick soft blowing, and improves the molten steel quality.

The utility model discloses a micro-fog dust removal device for steel belt rolling, which relates to the technical field of hot rolling production and comprises a U-shaped frame, a supporting plate is mounted on the upper end face of a horizontal section of the U-shaped frame, a filtering module is fixed on one side of the upper end of the supporting plate, an air compressor is fixed on the other side of the upper end face of the supporting plate, and a rotating support is mounted on one side of the U-shaped frame. A water spraying pipe is fixed to the rotating support, and atomizing nozzles are fixed to the water spraying pipe at equal intervals. According to the utility model, water is atomized and sprayed out through secondary utilization of waste water to replace original water spraying, so that the dust removal effect is better, the water spraying amount is greatly reduced, the temperature drop on the surface of a steel plate is greatly reduced, the dust accumulation phenomenon of rolling mill equipment can be effectively reduced, and the phenomenon that dust blocks of a rack fall off and are pressed into the steel plate is reduced; the surface quality of a steel plate is improved, abrasion of fine dust to mechanical operation parts such as bearings is relieved, the dust particle concentration is reduced, and the service life of field valve groups and electrical elements can be prolonged.

The present invention belongs to the technical field of continuous casting equipment in the steel industry, and discloses a tundish baking device with high baking temperature using blast furnace gas. It comprises a double preheating heat exchange system, wherein the front end of the double preheating heat exchange system is connected to a pipeline system, and the rear end of the double preheating heat exchange system is connected to a gas internal combustion burner system; one side of the double preheating heat exchange system is connected to an induced draft system, and the other side is connected to a flue gas branch pipeline; the pipeline system and the gas internal combustion burner system are respectively connected to a PLC system. A blast furnace gas high baking temperature tundish baking device is provided to solve the problem that when the continuous casting tundish baking device of the prior art is changed to use blast furnace gas, the tundish baking device cannot meet the requirements of not being easy to extinguish and quickly reaching the tundish baking temperature of 1100°C.