180 results about "Sheet steel" patented technology

The invention relates to the field of buildings, and discloses a prefabricated pipe pile stand column steel supporting node and a construction method thereof.The prefabricated pipe pile stand column steel supporting node comprises a prefabricated pipe pile stand column, a pile head is arranged at the top of the prefabricated pipe pile stand column, a micro-expansion concrete filling core is arranged in the prefabricated pipe pile stand column, and the bottom end of the micro-expansion concrete filling core is fixedly connected with a round thin steel plate through anchor bars; the top ends of the anchor bars are fixedly connected with anchor plates, overflow holes are formed in the anchor plates, and the top faces of the anchor plates are exposed out of the pile head. Longitudinal steel reinforcement frameworks and transverse stirrups are arranged in the pile head to form a steel reinforcement mesh cage, a micro-expansion concrete filling core is poured by adopting a layered pouring and layered vibrating process, and end hook type steel fibers are doped, so that concrete shrinkage can be compensated, cracks are inhibited, and meanwhile, the bending strength and the shearing strength of the pile head are enhanced; and the load of the steel support can be uniformly transmitted to the prefabricated tubular pile stand column through the anchor plate, so that the node has reliable bearing capacity and crack resistance.

The invention discloses 900MPa-grade hot-rolled high-strength structural steel for a CSP production line. The 900MPa-grade hot-rolled high-strength structural steel comprises the following chemical components in percentage by weight: 0.050-0.069% of C, less than or equal to 0.20% of Si, 1.50-1.70% of Mn, less than or equal to 0.012% of P, less than or equal to 0.003% of S, 0.15-0.20% of Ti, 0.18-0.55% of Cr, 0.02-0.08% of V, 0.03-0.06% of Alt, 0.001-0.004% of Ca, less than or equal to 0.004% of N and the balance of Fe. And 18 < = (Ti + V) * 104 < = 25. The low-cost alloy component design is adopted, the optimized steelmaking and hot rolling procedures are combined, the strength and plasticity of the hot-rolled structural steel can be effectively improved, and low-cost production of a thin steel plate strip with the tensile strength larger than or equal to 900 MPa is achieved; and after-treatment processes such as cold rolling or heat treatment for regulating performance are not needed, so that the production process can be greatly shortened, procedures are saved, and the method is suitable for popularization and application.

The present invention relates to a method for manufacturing a stator for an axial gap-type motor, which can minimize core loss due to eddy current by configuring split teeth using a multi-stage laminated core formed by stacking multiple sub-laminated cores having different shapes. According to the present invention, the method for manufacturing a stator comprises the steps of: preparing multiple sub-laminated cores having different shapes by primarily stacking multiple thin steel pieces for each type; preparing multiple divided teeth by secondarily stacking the multiple sub-laminated cores; forming a waterproof coating film on an exposed flat surface of a shoe of the multiple divided teeth, the waterproof coating film being made of a film thinner than a waterproof partition wall; and forming, when injection molding a body case, a front end of each of the multiple divided teeth by an insert molding method to be embedded in the waterproof partition wall.

The invention relates to a battery carrier for an electric vehicle, comprising a battery tray (1) produced as a hot-formed and press-hardened component from a sheet steel blank, comprising a base (2) and side walls (3, 4) rising from the base (2) and having a flange (5) running around the top of the battery tray (1) and projecting outwards. A cooling channel structure (9) is formed in one piece and from a uniform material in the base (2), wherein a cover plate (12) is arranged on the base (2) in the battery tray (2) or wherein a cover plate (12) is arranged beneath the base (2) of the battery tray (1), such that cooling channels (13) are formed between the cooling channel structure (9) and the cover plate (12).

This invention discloses a method for fixing a seepage-proof transition section on an irregular rock slope in a mine landfill. A seepage-proof cementitious composite sprayed material is wet-sprayed onto the irregular rock slope (1-2), forming a seepage-proof cementitious composite sprayed material layer (2) on the surface of the seepage-proof transition section. A seepage-proof geomembrane (3) is laid from the regular rock slope (1-1), and then rubber pads (7) and thin steel plates (6) are laid on the geomembrane (3) from the inside out. Hollow grouting anchors (4) are self-drilled through the holes in the thin steel plates (6) and rubber pads (7), and the edges are trimmed with a seepage-proof sealing agent (8). This invention is applied to the reinforcement of seepage-proof transition sections on irregular rock slopes in mine landfills, overcoming the problem of easy damage during the fixing process of seepage-proof transition sections on irregular rock slopes, eliminating potential hazards, and improving the safety and reliability of the seepage-proof system. It not only has good economic benefits but also significant safety and environmental benefits.

The present application relates to the technical field of metallurgy, and particularly relates to a heat treatment production method of a thin-gauge series wear-resistant steel plate, which comprises the following steps: steel plate preparation, stacking and fastening, heating and quenching, disassembly and separation, tempering treatment and straightening treatment, wherein the stacking and fastening step is to stack the thinner steel plates as interlayer thin plates, the thicker steel plates as top cover plates and bottom cover plates, place the top cover plate on the top of the several interlayer thin plates stacked on the bottom cover plate, and fasten the top cover plate and the bottom cover plate. The present application effectively reduces the quenching residual stress of the steel plate, improves the plate shape control ability and the plate shape quality, and realizes excellent control of the plate shape of the thin-gauge wear-resistant steel by heating and quenching the stacked and fastened multi-layer thin-gauge steel plate. Meanwhile, the present application realizes the production of wear-resistant steel plates with different hardness levels using the same component in combination with different quenching cooling speeds. After tempering, the steel plate is quickly straightened using the residual heat, and the produced thin-gauge series wear-resistant steel plate has high flatness.

The utility model discloses a skylight sunshade curtain which comprises a sunshade curtain handle and sliding blocks installed at the two ends of the sunshade curtain handle. The cross section of the sunshade curtain handle is of a double-hole structure, one side edge of the sheet steel is folded and bent inwards to form a large hole, and the other side edge of the sheet steel is folded and bent inwards to form a small hole. Correspondingly, the sliding block comprises a sliding block body, a small inserting part and a large inserting part, wherein the small inserting part and the large inserting part are arranged at the end of the sliding block body side by side. The small inserting part is clamped in a small hole of the sunshade curtain handle, and the large inserting part is clamped in a large hole of the sunshade curtain handle. The double-hole sunshade curtain handle can adapt to a narrower space layout, materials are reduced, and cost is reduced; the sunshade curtain handle is combined with the sliding block, installation is convenient, the anti-torsion capacity is higher, connecting pieces are matched through elastic clamping connection characteristics, it can be guaranteed that the structure of the whole system is more stable due to high and low temperature changes or when the whole system passes through a bumpy road, and the clamping force between the sunshade curtain handle and the sliding block can effectively eliminate the risks of vibration and abnormal sound.

The utility model discloses an edge cutting device for stainless steel plate machining, and relates to the technical field of steel plate machining, the edge cutting device comprises two bottom plates, a cutter, a knife switch, a supporting mechanism, a sliding mechanism and a locking mechanism, the cutter is welded on the upper surfaces of the bottom plates, the rear end face of the cutter is rotatably connected with the knife switch, and the supporting mechanism is connected with the sliding mechanism. According to the steel sheet cutting device, supporting of a steel sheet is achieved through the supporting mechanism, the stability in the cutting process is improved, the U-shaped clamping plate is arranged on the outer side of the bottom end of the cutter in a sleeving mode, one end of the U-shaped clamping plate is attached to the cutter through rotation of the clamping rod, the stable clamping effect is achieved, and meanwhile the clamping rod is fixed to the outer side of the U-shaped clamping plate. The L-shaped laying plate is arranged on the front end face of the U-shaped clamping plate and used for effectively supporting the thin steel plate, the thin steel plate to be cut can be stably supported by the L-shaped laying plate, the thin steel plate is prevented from drooping or shaking in the cutting process, it is guaranteed that the thin steel plate is stably placed, and the cutting precision is further improved.

This invention provides a highly economical nesting drainage pipe by forming connecting sections between pipe bodies without creating enlarged diameter sections. [Solution] This is a nesting drain pipe 1 in which, among a plurality of pipes of different diameters, one pipe 20 can be inserted into the outer pipe 10 which has a larger diameter. When the inner pipe 20 extends, the tip of the outer pipe 10 at the connecting portion that contacts and connects with the outer pipe 10 is reduced in diameter, and a protrusion 22a provided on the outer circumference of the base end 22 of the inner pipe 20 engages with the reduced diameter portion 13a, thereby forming the connecting portion without expanding the base end 22. Each of the plurality of pipes 10 and 20 is provided with a water collection hole 25 along its entire length. The protrusion 22a is formed from a protruding material such as a thin steel plate, screw, rivet, pin, dowel, or weld bead, or from a wound material such as wire, tape, or pipe, or by crushing the edge of the base end of the pipe.

The invention relates to a metal mold extrusion imbedding method, which is specially used for an imbedding casting which cannot be used for imbedding a large-proportion insert in gravity casting, and comprises the following steps of: fixing all inserts on an insert assembly which is made of a thin steel plate, can be put into a metal mold, has a casting appearance, is provided with an opening at the upper end and is used for isolating molten steel from directly contacting with the metal mold; the method comprises the following steps: putting an insert assembly into a furnace, heating to 600-1000 DEG C, putting into a metal mold, closing and locking the mold, quantitatively pouring molten steel at an upper end opening, starting a press, carrying out closed extrusion on the molten steel by an upper mold, enabling the molten steel to enter a small space between inserts, and wetting the surfaces of the inserts at a certain temperature under pressure to form metallurgical bonding.

The invention belongs to the technical field of metal material surface treatment, and discloses a production process of a weldable electroplated chromium plate. According to the process, cluster-shaped peak morphology is transferred on the surface of a cold-rolled steel coil through a laser texturing roller, and staged double-layer chromium electroplating is combined, specifically, a discontinuous chromium layer is formed on the top of a micro convex peak through first-time high-current pulse electroplating, and local iron leakage points are reserved; the second low current direct current plating covers an ultrathin continuous chromium film to maintain macro passivation. According to the invention, a composite functional structure with both macroscopic passivation integrity and microcosmic conductive selectivity is constructed on the surface of chromium-plated iron by accurately controlling the microstructure of the surface of a base material and double-layer chromium plating process parameters, so that the technical bottleneck of the chromium-plated plate in resistance welding application is effectively solved, collaborative optimization of weldability and corrosion resistance is realized, and the application range of the chromium-plated plate in resistance welding is widened. And a reliable technical path is provided for comprehensive replacement of chromium-plated iron in the field of metal packaging.

The present invention relates to the technical field of ship heterogeneous material connection, and discloses a ship composite sandwich panel connection mechanism supported by an I-beam, comprising a steel connection mechanism, a composite sandwich panel structure, an I-beam, ceramic wool and a thin steel plate. The steel connection structure is arranged at a full-gear or half-gear strong frame, with the composite sandwich panels connected on the left and right sides, the I-beam connected at the bottom, and ceramic wool and a thin steel plate connected on the outside to improve the fire protection level. The present invention adopts a pre-embedded and welded method to connect the composite sandwich panel and the steel structure, and optimizes the shear stress at the traditional connection interface to be the main stress and stress concentration to surface contact and line contact, which significantly reduces the stress concentration degree and improves the safety of the overall structure. It solves the problems of low load transfer efficiency, poor deformation coordination, insufficient connection strength, etc. existing in conventional connection technologies, and is suitable for connection scenarios where composite sandwich panels and steel structures have high connection strength requirements.

This invention relates to a novel shear wall, and more particularly to a prestressed self-centering steel plate-concrete composite shear wall, belonging to the field of structural engineering technology. This shear wall consists of a surface steel plate, internal concrete, thermal insulation materials, double-steel-tube concrete columns, connecting angle steel, square tie rods, anchorages, and prestressing tendons. The surface steel plate is made of thin steel; the internal thermal insulation materials are materials such as rock wool; the double-steel-tube concrete columns have round steel tubes inside and square steel tubes outside; the prestressing tendons are unbonded post-tensioned prestressing tendons. The prestressed self-centering steel plate-concrete composite shear wall provided by this invention is a novel lateral force resisting component for high-rise structures or other structures. It features light weight, good seismic performance, and high ductility, making it an excellent lateral force resisting component.

The present invention relates to the technical field of hot-rolled high-strength steel production, specifically a high-strength and toughness, low-yield ratio thin steel plate for concrete mixer trucks and its manufacturing method. The steel plate comprises the following chemical components by weight: C: 0.10% to 0.15%, Si: 0.60% to 0.90%, Mn: 0.80% to 1.00%, P ≤ 0.015%, S ≤ 0.005%, Al: 0.25% to 0.29%, Cr: 0.40% to 0.60%, N ≤ 0.0040%, H ≤ 0.00020%, Nb: 0.008% to 0.030%, with the remainder being Fe and unavoidable impurities. Production costs are significantly reduced, and the product exhibits excellent performance, including high tensile strength, low yield ratio, good plasticity and toughness, high wear resistance, good fracture resistance, good formability, and low-temperature impact toughness. It can be a low-cost, comprehensive replacement for existing concrete mixer truck tank and blade manufacturing materials.

This invention discloses a method for controlling the edge waviness problem at the head of wide, thin steel plates, relating to the field of steel plate processing quality control technology. The specific steps include obtaining a preset value Fb for the bending roll force. 预 Determine Fb 预 Rolling length L acting on the head of the steel plate 头 Before the steel plate is bitten in during the finishing rolling stage, follow Fb 预 A bending force is applied to create a negative convexity in the transverse loaded roll gap of the rolls; rolling begins when the head of the steel plate bites in, continuing until the rolling length reaches L. 头 Then, restore the bending roll force to its initial value and continue subsequent steel plate rolling. Using the method of this invention, the problem of edge waviness at the head of wide, thin steel plates can be effectively controlled, enabling the straightness of the steel plate head to reach 1.2mm / 1000mm.

The invention belongs to the technical field of steel plate cutting, and particularly relates to steel plate cutting equipment for steel machining, which comprises a machining platform, the upper end of the machining platform is fixedly connected with a placing table and a guide track plate, the guide track plate is located above the placing table, and a plasma welding gun is arranged below the guide track plate; and the pressing and fixing mechanism is used for pressing the upper end of the steel plate before cutting so as to prevent the steel plate from deviating during cutting, the pressing and fixing mechanism comprises a fixing plate fixedly connected to the lower end of the guide rail plate, and the lower end of the fixing plate is rotationally connected with two threaded rods. On the basis of hierarchical control of hydraulic pressure (through automatic pressure release valves with different threshold values), self-adaptive speed regulation of'thin-fast thick-slow 'is achieved, when a steel plate is thin, a plurality of moving rods stretch out, the cutting speed is increased, and plasma arc burning through caused by overheating is avoided; when the steel plate is thick, only a small number of moving rods stretch out, the cutting speed is reduced, and the plasma arc fully melts metal.

The invention relates to a 9Ni steel plate for ship LNG storage tank with high strength and low yield ratio. According to the mass percentage, the chemical constituents are C: 0.02-0.05%, Si: 0.10-0.30%, Mn: 0.50-0.80%, Ni: 8.90-9.50%, P: ≤0.0070%, s: ≤0.0020%, Cr: 0.10-0.25%, Alt: 0.010-0.035%, Nb: 0.010-0.020%, Ca: 0.0005-0.0030%, O: ≤0.0012%, N: ≤0.004%, H: ≤0.00015%, and the balance is Fe and unavoidable impurity elements. The production process flow is: smelting in a converter or electric furnace→RH vacuum degassing→LF refining→RH high vacuum degassing→Ca Treatment→continuous casting→slab slow cooling treatment→slab surface cleaning→heating→rolling→quenching→tempering. For the 9Ni steel, especially the 9Ni thin steel plate, the invention adopts the constituents design of low C, 9% Ni, addition of Nb and Cr. The steel plate is subject to high-temperature hot rolling, and then QLT heat treatment process to obtain 9Ni steel with good strength, toughness and low yield ratio.

A battery carrier for an electric vehicle having a battery tray produced as a hot-formed and press-hardened component from a sheet steel plate, having a floor and side walls rising from the floor with a flange encircling the top of the battery tray and projecting outwards. A cooling channel structure is formed integrally in the floor and made from one material, wherein a cover plate is arranged on the floor in the battery tray or a cover plate is arranged underneath the floor of the battery tray in such a way that cooling channels are formed between the cooling channel structure and the cover plate.

The utility model provides a numerical control machine tool isolation door, which relates to the technical field of numerical control machine tools, and comprises a linear module, a spliced isolation door, a mounting cavity and an anti-puncture protection plate, a linear module is adopted to drive a spliced isolation door replacing a sliding block of the linear module, the spliced isolation door is shielded in front of a feeding window of an outer protective cover of the numerical control machine tool, and the linear module drives the spliced isolation door to transversely move to control whether the feeding window of the outer protective cover of the numerical control machine tool is shielded or not. And the installation cavities in the upper side and the lower side of the splicing type isolation door are filled with the anti-puncture protection plates, splashing crushing cutters are blocked through the anti-puncture protection plates, the better anti-puncture effect is achieved compared with a thin steel plate, and the safety of machine tool operators is protected.

The invention relates to a method for producing components from sheet steel, wherein a sheet steel blank is cut out of a flat, hot- and cold-rolled steel strip coated with a zinc-based coating, and at least sub-regions of the sheet steel blank are either heated to a temperature above Ac3 and then shaped in a hot state in a press-hardening tool and quench-hardened, or the sheet steel blank is cold-formed into a sheet steel preform and the sheet steel preform is then quench-hardened in a hot-stamping tool, wherein, for heating from 420°C to 530°C, the heating rate is set such that the degree of discoloration towards silver S is greater than 1, and wherein the heating takes place with a heat-up rate that is variable over the furnace dwell time and dependent on the zinc layer thickness.

This application discloses a dual-drum vulcanizing device. The vulcanizing apparatus includes a vulcanizing support frame fixed to the upper surface of a base, a pair of horizontally distributed vulcanizing drums rotatably connected to the vulcanizing support frame, a pair of horizontally distributed guide rollers rotatably connected to the vulcanizing support frame, a central pressure roller mechanism, a pair of drive roller mechanisms, a pair of tension roller mechanisms, and a thin steel plate pressure belt. The pair of guide rollers are located above the pair of vulcanizing drums and between the pair of guide rollers. The pair of tension rollers are located below the pair of vulcanizing drums and between the pair of tension rollers. The pair of drive rollers are located between the lower parts of the pair of vulcanizing drums. The central pressure roller is located between the upper parts of the pair of vulcanizing drums. The thin steel plate pressure belt is wound around the pair of tension rollers, the pair of guide rollers, the pair of vulcanizing drums, the central pressure roller, and the pair of drive rollers. In this application, both the inlet and outlet are located below the pair of vulcanizing drums, allowing for a larger wrap angle between the two vulcanizing drums and improving vulcanizing efficiency.

A thin, high-strength steel sheet with a tensile strength of 1180 MPa or more is provided, exhibiting excellent malleability, excellent delayed fracture resistance from a base steel sheet, and excellent delayed fracture resistance from a projection weld, along with a method for its manufacture. The thin, high-strength steel sheet has a chemical composition containing C, Si, Mn, P, S, Al, and N, with the remainder consisting of Fe and unavoidable impurities, and a complex structure containing ferrite, quenched martensite, and bainite, wherein a volume fraction of the total quenched martensite and bainite contains five or more carbides with a particle size of 0.1 µm or more.0 µm or less in a grain with respect to the total quenched martensite and bainite is 85% or more, whereas the mass % of C and the mass % of Mn in a region of 20 µm or less in the thickness direction from a surface of the steel sheet is 20% or less with respect to the mass % of C and the mass % of Mn in a region of 100 µm or more and 200 µm or less from the surface of the steel sheet.

A shaped sheet metal part formed from a sheet steel blank includes a steel substrate which consists of a steel which includes 0.1-3% by weight of Mn and optionally up to 0.01% by weight of B. The shaped sheet metal part has an aluminum-based anticorrosion coating on at least one side and is characterized in that the magnitude of the hardness gradient of anticorrosion coating and steel substrate perpendicular to the surface of the steel substrate is less than 1.7 GPa / μm. A process for producing such a shaped sheet metal part.

The utility model provides an aerial fog cooling experimental device, and belongs to the technical field of metallurgical equipment. Comprising a linear motor which is composed of a linear motor rotor and a linear motor permanent magnet guide rail. The auxiliary sliding guide rail is parallel to the linear motor permanent magnet guide rail, and a hollow area is formed between the auxiliary sliding guide rail and the linear motor permanent magnet guide rail; the upper spraying beam is arranged right above the hollow area; the lower spraying beam is arranged under the hollow area; the test piece tray is of a hollow structure and can do reciprocating motion on the linear motor permanent magnet guide rail, and the hollow structure is matched with the hollow area. According to the utility model, the linear motor is adopted to drive the test piece to move in the aerial fog cooling area, so that a wide movement speed adjusting range can be realized, and thin steel plate test pieces with different thickness specifications can pass through the cooling area according to the speed requirement of the actual casting and rolling process.

A kind of prestressed fiber cloth tensioning system applied to bridge reinforcement construction, relate to the method for reinforcing bridge, including fixed mechanism, fiber cloth and tensioning mechanism;Fixed mechanism includes thin steel plate and two groups of pressing tool;Tensioning mechanism includes tensioning fixed seat, counter-force block, jack, round shaft, screw rod and pressing plate;Jack is connected between tensioning fixed seat and counter-force block, sets up tensioning stroke groove on tensioning fixed seat, round shaft is arranged in tensioning stroke groove, and round shaft is connected with counter-force block by screw rod;Pressing plate is set on the side of tensioning fixed seat, and pressing plate is connected with tensioning fixed seat by support;Strut is set between pressing plate and tensioning fixed seat;One end of fiber cloth is pressed between thin steel plate and bridge, and fiber cloth is pressed by pressing tool, and after passing through pressing plate and strut, the other end passes through strut and pressing plate again.Fiber cloth avoids collapse, sliding phenomenon in the process of tensioning.

The invention relates to the field of bridge structures, in particular to an assembly type thin steel plate constraint box type concrete cantilever cover beam and a construction method thereof.The cantilever cover beam comprises an upper cast-in-place component and a lower prefabricated assembly component, and the lower prefabricated assembly component comprises a box beam and a steel plate shell covering the box beam; a shear key is arranged at the top of the steel plate shell, and the upper cast-in-place component is connected with the shear key; the problems that a cantilever bent cap is too heavy and high in hoisting cost, and a fully-prefabricated bent cap is insufficient in structural stability and difficult to balance weight reduction and structural stability are solved. The weight is reduced through the box girder, and the transportation and hoisting cost is reduced; the anti-seismic property of the box girder structure is improved through the steel plate shell by utilizing the constraint effect; occlusion connection between the two parts is enhanced through the shear keys, and relative slippage between the two parts is resisted. A composite force transmission structure of concrete and the steel box is formed through the construction method, the section torsional rigidity of the box girder is improved, and the load transmission path of the box girder is optimized.

The invention discloses a floor thickness control device and process integrated with a protective layer cushion block, and aims to solve the problems that a traditional steel bar protective layer cushion block is easy to displace, and the floor thickness needs to be additionally controlled. The device consists of a cake-shaped cushion block, a U-shaped metal bracket and a hard plastic sleeve, wherein the cake-shaped cushion block is integrally cast with the U-shaped metal bracket by adopting cement mortar or fine aggregate concrete; the U-shaped metal support comprises a thin steel plate strip and two vertical steel bar end rods welded to the two ends, when the device is installed, the thin steel plate strip is tightly attached to the bottom face of a floor lower layer stressed steel bar, and the vertical end rods are limited to avoid displacement of the cushion block. After a floor reinforcement cage is bound, the vertical end rod is tightly sleeved with a hard plastic sleeve, and the sum of the height of the sleeve and the thickness of the cushion block is equal to the designed thickness of a floor; when concrete is poured and plastered, accurate control over the thickness of the floor slab is achieved through the height of the top face of the sleeve, open holes are formed in the side wall of the sleeve in a staggered mode, an inner cavity is filled with cement paste, and floor slab holes are prevented. Double precise control over the floor slab protection layer and the thickness is synchronously achieved through the integrated composite component, the working procedure is simplified, the efficiency is improved, and the cast-in-place floor slab construction technology is efficiently improved.

A pressing tool has a support structure made of sheet steel. The pressing tool is formed by a press plate or endless belt and configured to press material panels in hot presses. The support structure of the pressing tool thereby has a coarse structure with a depth of at least 150 μm produced by at least one processing operation. At least a partial region of the coarse structure is rounded by laser polishing. The surface of the pressing tool has a fine structure produced by at least one processing operation. Further, a method manufactures the pressing tool and a method manufactures a material panel using the pressing tool.

The invention belongs to the technical field of coal chemical industry, oil shale and biomass pyrolysis, and particularly relates to a high-temperature flue gas heat tracing structure of a raw gas dust removal device, which is characterized by comprising a masonry structure layer, a high-temperature flue gas heat tracing layer and a heat insulation layer, the masonry structure layer is arranged on the innermost side of the structure to replace the original outer wall of the dust removal device, and the high-temperature flue gas heat tracing layer is arranged on the heat insulation layer. The heat insulation and preservation layer is arranged on the outer side of the masonry structure layer, the high-temperature flue gas heat tracing layer is arranged between the heat insulation and preservation layer and the masonry structure layer, a channel of high-temperature heat tracing flue gas is formed in the high-temperature flue gas heat tracing layer, and the temperature of the high-temperature heat tracing flue gas is not lower than the temperature of raw coke oven gas in the raw coke oven gas dust removal device; the heat insulation layer is composed of a structure supporting body, a heat insulation layer and a metal isolation layer, and the metal isolation layer is a heat-resistant thin steel plate. The outer wall has the beneficial effects that high-temperature flue gas is prevented from entering the dust removal device to generate adverse effects on raw coke oven gas components, and compared with the outer wall of the conventional dust removal device with a heat-resistant steel structure, the manufacturing cost of the dust removal device can be greatly reduced.