37 results about "Hot work" patented technology

This invention relates to the field of remote monitoring and discloses a hot work safety management system and method based on remote monitoring. One method includes: constructing a preliminary scenario for the work location, fire source intervention method, and isolation measures; implementing a progressive tracking mechanism for the triggered state of the work access framework to reconstruct the changes in the hot work process; comprehensively analyzing images, sounds, warning zone markings, and personnel disturbances transmitted from the site using a work deviation recognition model; digitally labeling the work units and impact ranges corresponding to protection failure scenarios in the background monitoring interface to form a hot work traceability ledger for file location and reverse tracing of responsibility links; and dynamically adjusting the marking colors, prompts, and inspection priorities in real time based on the dynamic updates of the hot work traceability ledger to generate management instructions for the construction site. This invention has the advantage of improving regulatory transparency.

This invention relates to a method for preparing a high-toughness hot work die steel for hot forging dies, comprising the following steps: S1, electric furnace smelting; S2, ladle refining; S3, vacuum refining; S4, die casting electrode billet; S5, electrode billet annealing; S6, electroslag remelting; S7, forging; S8, post-forging pretreatment; S9, solution treatment + spheroidizing final treatment. Based on the H13 composition, this invention, through adjustment of chemical composition and the use of special smelting, forging, and heat treatment processes, results in a product with excellent high purity, high hardness, and high toughness. Dies made from this material exhibit significantly improved resistance to cracking and corner collapse, extending die life while substantially reducing unit operating costs. This invention also relates to a high-toughness hot work die steel for hot forging dies, suitable for manufacturing large, precision, complex, and long-life critical industrial dies, capable of meeting the stringent performance requirements of die materials in the high-end equipment manufacturing field.

This invention discloses a high-performance H13 mold steel modified with magnesium and its manufacturing method, belonging to the field of special steel metallurgical technology. The chemical composition of the steel, by mass percentage, is: C: 0.36~0.42%, Si: 0.80~1.20%, P: ≤0.025%, S: ≤0.003%, Mn: 0.25~0.60%, Cr: 4.90~5.30%, Mo: 1.10~1.50%, V: 0.80~1.0%, Mg: 0.0020~0.0035%, with the balance being Fe and unavoidable impurities. The manufacturing method includes: smelting → magnesium modification treatment → casting → rolling → spheroidizing annealing → quenching and tempering treatment. This invention, by precisely controlling the amount and timing of magnesium addition, transforms large-sized Al2O3 inclusions in the steel into fine and dispersed MgO·Al2O3 spinels. Simultaneously, magnesium agglomerates at grain boundaries, suppressing alloy element segregation, refining liquid carbides, and improving their distribution. Compared with the prior art, the steel of the present invention has an average inclusion diameter of ≤3.0μm, an average carbide size of ≤10μm, a banded segregation rating of ≤2.5, a tensile strength of ≥1780MPa, an impact energy of ≥150J, and significantly improved wear resistance and thermal fatigue performance, making it suitable for the manufacture of high-end hot work dies.

This patent belongs to the field of engineering technology and relates to a pipeline repair system, including a first repair component, a second repair component, and an annular packing. The second repair component includes defect packing and a main body of the second repair component. The defect packing is disposed within a pipeline defect. The main body of the second repair component is disposed on the outer wall of the pipeline. The main body of the second repair component covers and fixes the defect packing. The first repair component includes a main body of the first repair component. The main body of the first repair component is installed on the outer wall of the pipeline. The annular area between the first repair component and the second repair component is filled with annular packing. The beneficial effects of this patent are: good pipeline repair effect and high repair reliability; no need for hot work, suitable for transporting petrochemical media such as crude oil, natural gas, and refined oil; easy to manufacture, transport, install, and regulate.

The utility model discloses a kind of quick plug-in target type flowmeter, it is related to flowmeter equipment technical field, including hoop, internal thread base and internal thread type mounting nut, the hoop is tightened on the outer wall of process pipeline, the both ends of the hoop are bolted to the internal thread base is compressed in the aperture of process pipeline place.The utility model greatly improves installation efficiency by welding-free installation mode, avoids the safety risk and complex process of hot work operation, is applicable to flammable and explosive special working condition, through multiple sealing structure of pipeline sealing gasket and internal thread type and tight nut, the reliable sealing and long-term pressure-bearing capacity of interface are ensured, effectively prevent medium leakage, in addition, the modular design makes instrument main body can be quickly plugged, simplifies later maintenance, verification or replacement process, and stable mechanical structure can effectively resist fluid impact and pipeline vibration, ensure the stability of measurement.

The invention is directed to a method for reducing or eliminating the danger for gross cracking in a hot work tool for high pressure die casting practically eliminates the danger of crack initiation from the inside of the cooling channel by manufacturing a near net shape (NNS) mould for HPDC, wherein the conformal cooling channels are made of stainless steel tubes having a smooth surface. The hot work tool comprises at least one non-liner and / or one conformal cooling channel. The NNS mould is produced by Hot Isostatic Pressing (HIP).

The utility model relates to the field of tooling fixture, concretely relates to a hot pressing tool, including bottom plate, the movable setting of bottom plate has the base plate, the both sides of base plate are drive side and the side of sticking respectively, be equipped with drive unit and compression unit on the bottom plate, drive unit is located one side of drive side, and the drive surface of drive unit is obliquely arranged, and is mutually stuck with drive side, and is equipped with the gap of giving place on the drive surface, be equipped with first vertical guide assembly on the bottom plate, and compression unit includes first compression block and second compression block, and first compression block is movably arranged on first vertical guide assembly, second compression block is movably arranged on the outside bottom end of first compression block, the first bending section of workpiece is hung in the top of base plate, and first compression block carries out the location to the horizontal part of second bending section, and second compression block carries out the location to the vertical part of second bending section, drive unit drives base plate and moves to first compression block, forms multiple direction location to workpiece, avoids using bolt structure, improves the hot working qualification rate of workpiece.

This invention relates to the field of multimodal fire identification technology, specifically to a multimodal graded fire early warning and identification system and method for use in hot work spaces. The system includes a flame boundary extraction module, an edge behavior layering module, a flame fluctuation construction module, a disturbance ratio extraction module, and a grade identification module. In this invention, the trajectory is obtained by performing point-by-point comparison of pixel brightness changes in continuous images, and then the occurrence frequency of the multi-frame position offset trajectory is divided and eliminated, so that the flame outline can be preserved in a stable structural form in the oil fume disturbance environment. The flame cycle chain is obtained by judging the time sequence of the brightness peak occurrence time, and the disturbance structure is obtained by comparing the magnitude of the data changes in brightness jump, smoke plume diffusion speed and temperature increase. This enables the grade identification to maintain continuous expression under different fire source forms and interference conditions, solving the problems of boundary confusion, single trigger and grade offset in the prior art.

This invention discloses a fully modular and detachable bridge beam lowering system and its construction method, including: an upper inverted jack adjustment unit (1) and a lower modular flange support unit, and pier embedded parts (4); the upper inverted jack adjustment unit includes: multiple lifting rings (11) fixedly set on the lower cylinder of the jack, a turnbuckle structure (12), an ear plate (13) fixedly welded to the bottom of the steel box girder, and a shackle (14) connecting the ear plate and the turnbuckle structure; the upper end of the turnbuckle structure is connected to the ear plate through the shackle, and the lower end is connected to the lifting ring; during construction, the flange module is removed layer by layer by alternately lifting and retracting the jack, so as to achieve the smooth lowering of the steel box girder. This invention combines the upper non-destructive suspension fine adjustment with the lower modular non-cutting support, which can realize the non-destructive suspension and precise fine adjustment of the jack, and the lower support structure can be adjusted flexibly without hot work and without cutting, and all components can be reused. The construction is safe, efficient and environmentally friendly, and has high application value.

This utility model relates to a recycling system for foundry waste dust, comprising a regeneration dust collector, a shot blasting dust collector, a sand removal dust collector, or multiple dust collectors, which respectively connect to a vertical waste ash hopper via a first fan, a second fan, a third fan, or multiple fans. The vertical waste ash hopper then discharges the waste ash through a humidified and stirred process. The vertical waste ash hopper is further connected to a casting dust collector and a hot work room dust collector via fans, each with a first and a second dust collector bag. The casting dust collector and the hot work room dust collector then connect to the vertical waste ash hopper via a pneumatic conveying tank, and finally discharge the waste ash through a humidified and stirred process. The first and second soot blowing trolleys are designed to facilitate the rapid separation of floating matter such as oil, gas, and dust. Larger particles naturally fall into the first or second dust collector bag, while the mixed smaller particles, oil, gas, and dust return to the vertical waste ash hopper via the pneumatic conveying tank, and are finally discharged through a humidified and stirred process.

The present application relates to the technical field of intelligent management and control, in particular to a power plant full-scene hot work intelligent management and control and risk early warning system and method, the system comprising a full-scene hot work account and permission management unit, a multi-source heterogeneous sensing data acquisition unit, a hot work risk dynamic quantitative calculation unit, a multi-modal graded early warning and linkage management and control unit, and a full-process closed-loop management and control execution unit; the method is realized based on the system, the risk weight is determined by a combination weighting algorithm combining the analytic hierarchy process and the improved entropy weight method, a quantitative model considering multi-dimensional risk coupling effect is used to calculate the real-time comprehensive risk degree, and a multi-source data space-time alignment, graded early warning linkage management and control, and full-process closed-loop management mechanism are matched. The present application realizes the risk precise quantification, early warning and full life cycle closed-loop management and control of all types of hot work in power plants, and significantly improves the safety management and control capability and intelligent level of hot work in power plants.

The present application relates to the technical field of heat treatment processing control, and particularly relates to an intelligent processing control method and system for cold work die flat steel. The method comprises the following steps: obtaining raw material parameters of the cold work die flat steel, and calculating material processing characteristic coefficients according to the raw material parameters; determining hot processing parameters based on the material processing characteristic coefficients; performing hot processing simulation according to the hot processing parameters, and collecting temperature control execution signals in real time; determining a quenching stage according to the temperature control execution signals; collecting quenching appearance images of the cold work die flat steel in the quenching stage, and identifying a warping deformation area in the quenching appearance images; calculating a warping deformation amount according to the warping deformation area; performing partition tempering compensation control based on the warping deformation amount, and generating tempering compensation control instructions. The present application realizes partition compensation and gradient control of the quenching and tempering processes based on heat treatment processing control technology, so as to realize intelligent adjustment of the processing process.

The present application relates to a kind of big specification high-performance hot die steel and its smelting process, including following chemical components by weight percentage: [C]:0.33~0.42%、[Si]:0.20~0.40%、[Mn]:0.30~0.60%、[Cr]:4.90~5.50%、[Ni]:0.40~0.80%、[Mo]:2.10~2.30%、[V]:0.70~0.80%、[Co]:0.60~0.80%、[P]≤0.012%、[S]≤0.002%、[Cu]≤0.10%、La+Ce:20~50ppm、(As+Sn+Pb+Sb+Bi)≤0.020%, the balance is [Fe];Using "electric furnace smelting+ladle refining+vacuum refining→continuous casting→annealing / hot delivery→finishing→detection" method, realize high-performance hot die steel big specification continuous casting billet center loose ≤0.5 level, center crack ≤1.0 level, same section carbon difference ≤0.02%, non-metallic inclusion total can reach ≤2.5 level, cost is lower than original process route 200~500 yuan / t, the method is realized with lower cost and shorter production cycle while high performance.

This utility model discloses a heat treatment trolley furnace relating to the field of trolley furnace technology. The furnace body has an openable furnace door that can be raised and lowered. The lower end of the furnace door has an opening corresponding to the track. A U-shaped groove is provided along the circumference of the furnace body on the lower side of the inner wall of the furnace body. A trolley is installed within the U-shaped groove, capable of traveling along the track and sealing against the inner wall of the U-shaped groove and the furnace door. The trolley divides the furnace interior from top to bottom into a heating chamber for workpiece processing and a heat-insulating chamber for heat-protecting the track and trolley's traveling mechanism. The upper part of the trolley has a material rack for carrying workpieces and for rotating and heating the workpieces. This utility model not only effectively insulates the interior of the furnace body, ensuring efficient heat treatment of the workpieces, but also effectively insulates and protects the trolley, track, and other components. Furthermore, it enables workpiece rotation and heating, greatly improving the processing quality of the workpieces.

This utility model discloses a mold fixing device for exothermic welding, belonging to the technical field of exothermic welding molds. It includes a base plate, a support seat fixed to the top of the base plate, and a storage groove on the top of the support seat for easy wire welding processing. A mold body is slidably connected to the side wall of the support seat, and the end of the mold body abuts against the base plate. Two fixing blocks for connection are welded to the top of the base plate, symmetrically positioned relative to the support seat. A movable pressure plate is also provided on the top of the fixing blocks, engaging with the fixing blocks and abutting against the wire. Through grooves corresponding to the storage grooves are provided on both sides of the bottom of the mold body, with the inner walls of the through grooves slidably connected to the side walls of the exothermicly processed wire. This utility model can not only fix welding wires of different sizes, but also, through the connection of the support seat and movable grooves, complete the fixation of the mold body and the base plate, ensuring the device remains stable during operation and improving its practicality.

To provide a powder for hot work tools used in additive manufacturing that excels in both high thermal conductivity and resistance to molding cracks, and an additively manufactured body produced using this powder. [Solution] A hot work tool steel powder for additive manufacturing, comprising, by mass%, C: 0.10~0.39%, Si: 0.60% or less, Mn: 5.00% or less, Cr: 1.99% or less, Ni: 8.00% or less, Mo: 1.20% or less, W: 2.00% or less (including 0.00%), V: 0.60% or less, Cu: 3.01~less than 6.00%, Al: less than 0.100% (including 0.000%), the remainder being Fe and unavoidable impurities, and Ni+Mn: 8.50% or less, and an additively manufactured body made using this powder.

The purpose of this invention is to provide a hot work tool steel with excellent high-temperature strength and toughness, comprising, by mass%, C: 0.20% to 0.60%, Si: 0.10% to 0.30%, Mn: 0.50% to 2.00%, Ni: 0.50% to 2.50%, Cr: 1.6% to 2.6%, Mo: 0.3% to 2.0%, V: 0.05% to 0.80%, and the balance being Fe and unavoidable impurities. This hot work tool steel is designed to achieve the following value A: A = ([T] + 273)(log 10 [t]+24) / 1000…(A) [where [T] represents the quenching temperature (°C), and [t] represents the quenching temperature holding time (h).] The calculated value A is the state of quenching and tempering in the hot work tool steel with a temperature between 27.4 and 29.3 μm before use. 2 The number of carbides with an equivalent circle diameter of 1 μm or more is less than 150.

This invention belongs to the technical field of steel-bonded cemented carbide, specifically relating to a hot-work steel-bonded cemented carbide material and its preparation method. The hot-work steel-bonded cemented carbide provided by this invention has tungsten carbide as its hard phase, with a weight percentage of 25-45 wt%. The remainder is a steel matrix binder phase, with the following components and weight percentages: chromium (2.0-5.5) wt%, molybdenum (3.0-6.0) wt%, nickel (0.8-2.8) wt%, carbon (0.3-0.6) wt%, and the balance being iron. The preparation method and steps include batching and ball milling, slurry treatment, pressing, sintering, forging and annealing, machining, and heat treatment. The hot-work steel-bonded cemented carbide obtained by this invention possesses excellent thermal stability, hardness, and wear resistance, and can replace traditional hot-work die materials, thus improving service life.

The utility model relates to the technical field of tempering, especially for a kind of energy-saving tempering furnace, including furnace body, the side end of furnace body is fixedly installed with sealing assembly by welding, the inside fixed mounting of sealing assembly has pressure relief component, the furnace body includes shell, the outer surface of shell is fixedly installed with support frame by screw nut, the shell and support frame constitute protective support structure, the inner wall bottom of shell is fixedly installed with first heating component by welding, the top of shell is equipped with several air inlets. The device can heat the processing components through the first heating component fixedly installed on the inner wall bottom of the shell and the second heating component fixedly installed on the inner wall top of the shell, and at the same time, the fan is rotated by the motor to enter the air from the air inlet into the tempering furnace, thereby forming hot air, which is then discharged through the vent opening on the rear outer surface of the shell, forming a heat cycle.

The invention discloses a kind of temporary isolation device for oil and gas pipeline hot work, belonging to the technical field of oil and gas pipeline isolation, specifically, oil and gas pipeline assembly is installed between oil conveying port, and is used for conveying and transporting oil and gas by oil and gas pipeline assembly, isolation device is detachably installed in the inside of oil and gas pipeline assembly, and the outer wall of isolation device is in close contact with the inner wall of oil and gas pipeline assembly, and the natural gas at one end inside oil and gas pipeline assembly is sealed and blocked by isolation device, the liquid part of liquid cavity can be in close contact with the raised weld of the inner wall of oil and gas pipeline, so as to achieve the effect of extrusion sealing, the raised weld is wrapped, and the strength is generated because the two cavities become liquid, to resist the pressure of gas in pipeline.

The application discloses an industrial resistance furnace, and relates to the technical field of metal hot processing, which comprises a base, wherein the base is provided with a furnace shell with an internal cavity; a heat insulation wall, a heating ring plate and a heat conduction wall are sequentially and radially arranged in the furnace shell in a center-outside mode; a positioning seat for placing the heating ring plate is arranged between the heat insulation wall and the heat conduction wall; an electric heating element is arranged on the inner side wall of the heating ring plate; a conductive column electrically connected with the electric heating element is arranged below the heating ring plate; a conductive slot is arranged above the positioning seat; a ring-shaped frame is arranged on the side of the heating ring plate away from the base; a plurality of supporting plates are arranged on the ring-shaped frame; a connecting buckle facilitating hoisting is arranged on each supporting plate; and an openable furnace cover is arranged on the top of the furnace shell; the heating ring plate can be conveniently taken out from the furnace shell in a hoisting and connecting buckle mode, the heating ring plate and the ring-shaped frame can be conveniently disassembled and cleaned, and the working efficiency of the resistance furnace is improved.

This utility model discloses a multi-functional hot work vehicle, which includes a cuboid frame. Wheel assemblies are located at the lower end of the cuboid frame. A first shelf for placing a welding machine is located at the lower part of the cuboid frame. A second shelf for placing a welding torch and a first cylinder for placing welding rods are located at the upper part of the cuboid frame. Several winding racks for winding welding wires are located in the middle of the cuboid frame. Push-pull handles and several second cylinders for placing fire extinguishers are provided on the cuboid frame. In this utility model, all necessary tools for hot work operations, such as welding machines, welding torches, welding wires, welding rods, and fire extinguishers, are placed on a movable cuboid frame. This means that hot work operators can push and pull the multi-functional hot work vehicle using the push-pull handles to move the necessary tools to the hot work site, thereby improving the efficiency of hot work operations and facilitating emergency response.

This invention discloses a temporary isolation device for hot work on oil and gas pipelines, specifically an oil and gas pipeline assembly. The assembly is installed between oil transport ports and is used to transport oil and gas. The isolation device is detachably installed inside the oil and gas pipeline assembly, with its outer wall in close contact with the inner wall of the assembly. The isolation device seals and blocks natural gas at one end of the pipeline assembly. This invention allows the liquid portion of the liquid chamber to make close contact with the raised weld bead on the inner wall of the oil and gas pipeline, achieving a compression seal. It effectively encapsulates the raised weld bead, and the liquid in both chambers provides strength, resisting the gas pressure inside the pipeline.

To provide a hot work tool steel having high levels of softening resistance, quenchability, and toughness.SOLUTION: A hot work tool steel comprises, in mass%, C: 0.32-0.50, Si: 0.2-1.2, Mn: 0.3-1.0, Cr: 3.8-5.5, Mo: 1.3-2.3, W: 0.5-2.3, V: 0.1-0.8, with the balance being Fe and inevitable impurities, and has a value of formula A (2.16-1.56C-0.02Si-0.40Mn-0.28Cr+0.02Mo-0.02W+0.26V) being 0.36 or less. After quenched and tempered, a value of formula B (39.56-11.54MC-5.13M6C-2.61M23C6) is 16.5 or less.SELECTED DRAWING: None

This invention discloses a method, device, and computer-readable storage medium for remote monitoring of hot work equipment. The method is applied to a control terminal installed on the hot work equipment and specifically includes: initiating a security handshake with a mobile terminal within a preset distance; after a successful handshake, receiving work data sent by the mobile terminal and reading its own location data; detecting whether the location data is within the control range of the work data; if the location data is within the control range, connecting the main power supply of the hot work equipment; if the location data is not within the control range, disconnecting the main power supply of the hot work equipment. This invention achieves a high-precision and high-efficiency remote monitoring solution for hot work equipment, improving the real-time performance of equipment monitoring, as well as its availability and robustness in complex industrial environments.