868results about "Work treatment devices" patented technology

The invention relates to the technical field of metal material hot working, and discloses a hot-rolled coiled plate production process which comprises the following steps: preparing a reaction type protective agent, the high-temperature-resistant coating is prepared from the following raw materials in parts by weight: 20 to 40 parts of tetraethoxysilane, 5 to 15 parts of triethyl phosphate, 1 to 5 parts of triethyl borate, 0.5 to 2.0 parts of cerous nitrate (III) hexahydrate, 0.1 to 1.0 part of lithium acetate and 0.01 to 0.05 part of vanadyl acetylacetonate (IV). Coating the surface of a hot-rolled plate blank with the protective agent; the coated plate blank is heated in a heating furnace, so that the protective agent forms a molten-state protective layer in situ; carrying out hot rolling on the plate blank with the molten protective layer; and cooling and coiling the hot-rolled steel strip. In the whole heating and hot rolling process, the molten protective layer isolates the contact between the steel and the oxidizing atmosphere, so that the generation of oxide scales is fundamentally inhibited, the production process is simplified, and the metal yield is increased.

The present invention provides a soluble cold rolling oil composition in which oil particles of approximately 0.1 μm or less are dispersed in water, and which has rolling properties (particularly anti-seizure properties) equal to or better than those of water-insoluble rolling oils and emulsion-type rolling oils, while enabling the gloss of products to be made uniform and enabling an improvement in unit consumption compared to emulsion-type rolling oils; and a cold rolling method using the composition. [Solution] A cold rolling oil composition containing (A) a base oil, (B) a specific fatty acid, (C) a specific sulfur-based extreme pressure agent, (D) a specific water-soluble polymer, and (E) a specific amine, and a cold rolling method using the same.

The invention relates to the technical field of metal plate rolling processing, and discloses a rolling strengthening method capable of reducing the rigidity of a metal plate, which comprises the following steps: applying an asymmetric rolling condition to an initial plate to enable the plate to generate a speed gradient in the thickness direction; the plate is subjected to one-pass large-rolling-reduction rolling, and a non-continuously-distributed shear band is formed; the rolled plate is heated to the dynamic recrystallization temperature interval of the plate, and multi-pass small-rolling-reduction warm rolling is conducted on the plate; and in the warm rolling process, dynamic recrystallization of a shear band is promoted to form a grain-refined continuous core layer, complete recrystallization of the surface structure of the plate is inhibited to keep the work hardening state of the plate, and therefore the metal plate with the rigidity lower than that of an initial plate is obtained. According to the invention, a soft core-hard shell heterostructure is constructed in the plate, high strength and low macroscopic rigidity are synergistically realized, the process controllability is strong, and the method is suitable for preparation of high-performance structural materials.

The utility model provides a hot-rolled strip steel cooling water circulation system, which relates to the technical field of steel hot rolling, and comprises a water collecting tank, a filter tank, a heat exchange tank and a water storage tank, the water collecting tank is arranged below a cooling device, the lower end of the water collecting tank is communicated with the lower end of the filter tank, and the heat exchange tank is communicated with the water storage tank. The upper end of the filter tank is communicated with the upper end of the heat exchange tank, and the lower end of the heat exchange tank is communicated with the lower end of the water storage tank. The water collecting tank is used for collecting used cooling water in the cooling device and preliminarily settling the cooling water, the filtering tank is used for filtering the preliminarily settled cooling water, and the heat exchange tank is used for cooling the filtered cooling water; and the water storage tank is used for storing the cooled cooling water. The hot-rolled strip steel cooling water circulation system has the effect of reducing the energy consumption and investment of the existing hot-rolled strip steel cooling water circulation system.

The application provides a corrosion-resistant super-large line energy welding steel plate and a production method thereof, relates to the technical field of alloys, and the steel plate adopts a corrosion-resistant alloying component system with composite addition of Ce, Sn and Cu. The addition of Ce can improve the corrosion resistance of the steel plate, and Ce is easy to combine with oxygen to generate spherical oxides and has the ability to induce the nucleation of intracrystalline acicular ferrite, thereby improving the welding performance of the steel plate. On the basis of the comprehensive design of chemical components, the process parameters of rolling and cooling processes are accurately controlled to obtain the corrosion-resistant super-large line energy welding steel plate with good comprehensive performance.

The utility model discloses a novel oxide scale collecting device. Which comprises a hot-rolled rod and wire conveying roller way, and is characterized in that a chain plate type conveyor is arranged below the roller way; a slag collecting hopper is arranged at the tail part of the chain plate type conveyor; and an iron sheet slag collecting box is arranged below the slag collecting hopper. According to the utility model, the oxide scale does not need to be flushed into the rotational flow well or the primary sedimentation tank by using additional slag flushing water and slag flushing runner and then is collected by using a grab bucket type travelling crane, so that energy conservation and emission reduction are realized. Meanwhile, the design of a slag sluice of a furnace discharging table and a slag sluice of a roughing mill unit area is omitted, only the slag sluice with small gradient and depth in the area from an intermediate mill unit to a finishing mill unit is reserved, and a large amount of cooling water doped with only a small amount of oxide scale powder can be recycled.

The invention relates to a production method of high-grade non-oriented silicon steel hot-rolled strip steel, and belongs to the technical field of steel preparation. The method comprises the following steps: carrying out heating treatment on a non-oriented silicon steel continuous casting sheet billet containing specific alloy components, and controlling the tapping temperature of the heating treatment to be a set tapping temperature; carrying out rough rolling on the heated non-oriented silicon steel continuous casting sheet billet to obtain an intermediate billet; the intermediate billet is subjected to finish rolling, and hot-rolled strip steel is obtained; and the hot-rolled strip steel is subjected to laminar cooling, coiling, heat preservation and edge cutting, and the high-grade non-oriented silicon steel hot-rolled strip steel is obtained. Key process parameters of each hot rolling process are accurately controlled, and batch stable production of the high-grade non-oriented silicon steel with high silicon and high nickel alloy components is realized. According to the method, the edge qualification rate and the yield are increased, the harsh requirements of users for the material performance, the size and the strength are met, and key material support is provided for strategic emerging industries such as new energy automobiles and unmanned aerial vehicles.

The invention relates to the technical field of angle steel production, and particularly discloses an automatic angle steel machining production line which comprises a heating mechanism, a feeding mechanism and a discharging mechanism. The forming mechanism is used for rolling the blank and rolling the blank with the rectangular section into the angle steel with the L-shaped section; the shearing mechanism is used for cutting off the formed angle steel; the cooling mechanism is used for intermittently conveying the cut angle steel; and the overturning mechanism is used for overturning the angle steel in the conveying process. According to the angle steel production line, the working procedures of heating, forming, shearing, cooling, overturning and the like are integrated, full-process automation of angle steel production is achieved, the problems of low efficiency and high manual dependence degree caused by traditional sectional type production are solved, the production efficiency is improved, and the labor intensity is reduced.

The application relates to the technical field of steel metallurgy, and discloses a rolling process for improving the surface quality of C70S6 non-adjustable steel, which comprises the following steps: S1, a heating process; S2, a descaling process; S3, a rolling process; S4, a cooling process; and S5, a finishing process.The process can significantly reduce thermal stress cracks, the temperature uniformity of the casting blank from the surface to the core is improved through a three-stage heating mode and precise heat preservation control, the thermal stress is effectively released, the anti-collision and spacing control during charging are combined, local overheating or overcooling is avoided, the occurrence rate of surface micro-cracks and corner transverse cracks is reduced by more than 80%, and the surface integrity of the casting blank is greatly improved.The process can completely solve the iron oxide scale defects, the double high-pressure water descaling process after the furnace and before the medium rolling is adopted, the optimized combination of the descaling pressure and the water flow speed ensures that the residual area of the iron oxide scale is less than or equal to 3%, the iron oxide scale pressing-in defects are completely eliminated, and the surface cleanliness of the steel is significantly improved, thereby providing a high-quality base for subsequent processing.

The utility model relates to a hinged type device for rapidly cooling a high-temperature plate blank, which comprises a base, a sleeve connected to the base, a water guide pipe arranged in the sleeve, a water inlet pipe connected to the bottom of the water guide pipe, a water spray pipe connected to the top of the water guide pipe through a first rotary joint, and an extended water spray pipe connected to the outer end of the water spray pipe through a second rotary joint. Nozzles are arranged on the water spraying pipe and the extended water spraying pipe, and a water spraying pipe supporting device is arranged outside the sleeve. According to the utility model, the steel billet can be quickly cooled, the cooling time for treating the hot steel billet is shortened, the working efficiency is improved, the loss of spare parts is reduced, and workers are prevented from being scalded.

The invention relates to the technical field of silicon steel production and processing, in particular to a high-temperature low-acid-consumption acid pickling and cold rolling process for a silicon steel strip. According to the method, low-concentration hydrochloric acid is combined with high-temperature pickling to enhance the reaction activity, and the consumption of hydrochloric acid can be greatly reduced on the premise of ensuring the oxide scale removal effect; meanwhile, the corrosivity of low-concentration hydrochloric acid to equipment is reduced, and the maintenance cost of the equipment can be saved; two-section gradient concentration pickling is matched with a high-temperature process, the oxide scale is efficiently removed layer by layer, the process can be optimized in real time according to the actual residual quantity in combination with self-adaptive adjustment of pickling parameters, and the pickling effect is remarkably improved; the rough rolling descaling pass is added before the follow-up cold rolling procedure, so that residual oxide scale can be thoroughly removed; the pickling parameters are adaptively adjusted according to the amount of residual oxide scales on the surface of the steel strip, pickling effect fluctuation caused by the difference of the oxide scales of raw materials can be effectively avoided, and the stability of the production process and the product percent of pass are ensured.

The present application discloses a producing method of a non-oriented silicon steel thin sheet. The method comprises processes of a slab continuous casting, a slab heating, a transfer bar preparation, a surface treatment, a billet assembly, a heating, a hot rolling, no normalizing, a pickling, a cold rolling, an annealing and a coating, and also comprises a coil separation process located before or after the cold rolling process; wherein, in the surface treatment process, a transfer bar enters a tunnel furnace for a high-temperature reduction heat treatment in a reducing atmosphere, a holding temperature is 950~1000°C, and a holding time is 15~30min; a single-layer non-oriented silicon steel product with a thickness of 0.15~0.30mm is produced. The present application obtains a thin-specification high-grade non-oriented silicon steel, and has a low production cost and a low production difficulty.

The method for generating a steel sheet material prediction model according to the present application is a method for generating a steel sheet material prediction model in a steel sheet cooling device, the steel sheet cooling device including a water cooling device that cools a steel sheet by spraying cooling water on the heated steel sheet, and a temperature measuring device that measures the surface temperature of the steel sheet during cooling, wherein the method for generating a steel sheet material prediction model includes the step of generating a steel sheet material prediction model after the steel sheet passes through the cooling device by machine learning using a plurality of learning data sets that include, as input performance data, surface temperature information data sets including measured data of the surface temperature at a reference point set in advance on the steel sheet and measured data of the surface temperature at a reference point set based on the reference point, and, as output performance data, material information of the steel sheet after passing through the cooling device at a position corresponding to the reference point on the steel sheet corresponding to the input performance data.

The invention provides a cooling bed for reinforcing steel bar machining, belongs to the technical field of reinforcing steel bar machining, and solves the technical problems that an existing cooling bed is poor in combination flexibility when reinforcing steel bars are machined and used, and the reinforcing steel bar cooling effect and the discharging uniformity of the cooled reinforcing steel bars cannot be ensured. The cooling bed for steel bar machining comprises a rack and a feeding barrel fixedly connected to one side of the rack, a material rotating roller is rotationally connected into the feeding barrel and driven by a driving motor, the driving motor is located at one end of the feeding barrel, and the material rotating roller is in transmission connection with a transmission rod. According to the steel bar cooling bed, the multiple conveying units are arranged in the rack in a staggered mode, under the action that at least one movable rod of each conveying unit is connected with the driving main rod, the driving motor can synchronously drive the material rotating roller and the conveying teeth to rotate, and the steel bar conveying effect of the cooling bed is ensured; the cooling bed can be flexibly combined and arranged according to the field size, and the use flexibility of the cooling bed is improved.

The invention discloses a method for optimizing a front guide groove of a bar flying shear. The method comprises the following steps that a honeycomb-shaped supporting structure is arranged on a guide groove base body for structural strengthening; a wear-resistant layer is arranged on the working surface of the reinforced guide groove base body; an adjustable guide part is additionally arranged in the rolled piece outlet area of the guide groove so as to guide the motion trail of the rolled piece before the rolled piece enters the flying shear; a quick dismounting and positioning mechanism is arranged between the guide groove and the mounting base, so that the guide groove can be conveniently replaced and reset; a cooling device is arranged on the guide groove and used for cooling the working area of the guide groove to restrain thermal deformation; a vibration reduction part is additionally arranged between the guide groove and the mounting base, and an adjustable inertia balance unit is arranged, so that the vibration level in the operation of the guide groove is reduced; a state monitoring unit is arranged on the guide groove and used for collecting parameters reflecting the working state of the guide groove in real time and conducting abnormal early warning. By innovatively improving the structure and the material of the guide groove, the problem of shearing deviation caused by the fact that a traditional guide groove is prone to abrasion and deformation is solved.

This invention discloses a production control method for ultra-thin-walled steel pipes, including obtaining first specification parameters of a solid round billet and second specification parameters of the finished steel pipe; sawing the solid round billet according to the second specification parameters to form short round billets; feeding the short round billets into an annular furnace, and sequentially passing through a heat recovery section, a preheating section, a preheating section, a heating section (sections one to four), and a soaking section for heating; monitoring the temperature of the short round billets in real time to ensure that the center temperature of the short round billets reaches a first temperature threshold. The first adjustment refers to the initial adjustment of the burner temperature based on the analysis results of the first image, used to address anomalies in the surface temperature of the short round billets; the second adjustment refers to the secondary adjustment of the burner temperature based on the analysis results of the second image, used to address anomalies in both the surface and internal temperatures of the short round billets, which helps to eliminate local non-uniformity in the temperature field of the short round billets on the surface and inside.

The invention discloses a wide and thin steel plate with excellent low-temperature toughness for a 355MPa-grade low-temperature engineering structure and a manufacturing method of the wide and thin steel plate, and belongs to the technical field of low-carbon microalloyed steel production. The steel plate comprises the following chemical components in percentage by weight: 0.05%-0.08% of C, 0.2%-0.25% of Si, 1.45%-1.55% of Mn, less than or equal to 0.025% of P, less than or equal to 0.015% of S, 0.02%-0.04% of Nb, 0.010%-0.04% of Al, 0.003%-0.006% of N and the balance of Fe and inevitable impurities, and the total amount of other impurity elements is less than 0.05%. The manufacturing method comprises the steps of molten steel smelting, external refining and degassing, continuous casting, slab reheating, rolling and controlled cooling. The steel plate is low in cost, high in strength and toughness and capable of meeting the service safety of the steel plate for the engineering structure under the condition of-60 DEG C.

The application discloses a swing water-cooling automatic control method for a special thick plate, wherein the special thick plate enters a DQ section and is cooled by adopting a back-and-forth swing, and when the back-and-forth swing pass is equal to a set pass, the special thick plate enters an LCS section and is cooled by adopting one-pass cooling. The application realizes the following purpose: when the final-rolled plate is too thick and exceeds the cooling capacity of the conventional one-pass water cooling, the automatic swing water cooling mode can be adopted to achieve effective cooling.

This utility model discloses a high-efficiency cooling device for steel rolling, including a cooling box with openings at both ends along its length for hot-rolled steel to enter and exit; a conveying mechanism for conveying the hot-rolled steel; an air-cooling mechanism including a fan rotatably mounted on the top of the cooling box for blowing air to cool the hot-rolled steel on the conveying mechanism; and a water-cooling mechanism including a spray box rotatably mounted within the cooling box along its length, with multiple nozzles evenly arranged along its length at the bottom of the spray box for spraying water to cool the hot-rolled steel on the conveying mechanism; and a swinging component connected to one end of the spray box along its length for driving the spray box to swing back and forth along its own axis in a vertical plane. This utility model employs both air-cooling and water-cooling methods, resulting in better cooling effect for hot-rolled steel; the rotation of the spray box by the swinging component expands the spray range of the nozzles; and the cooling water is cooled by condenser pipes as it falls, effectively reducing the temperature of the cooling water.

The application belongs to the technical field of copper foil and particularly relates to a copper wire forming device, which comprises a spraying part provided with a liquid spraying opening, the spraying part being capable of spraying a drawing liquid to the copper wire through the liquid spraying opening; and an extrusion assembly arranged on one side of the spraying part, the extrusion assembly being capable of forming a protrusion on the surface of the copper wire sprayed with the drawing liquid. The application can relieve the drawing stress by spraying the drawing liquid before the protrusion is formed on the surface of the copper wire, so as to avoid the rupture of the copper wire and ensure the continuity of the copper wire winding disc.

This invention belongs to the field of hot processing technology of rare earth iron-chromium-aluminum steel coils, specifically relating to a production method for preventing edge cracking of hot-rolled steel coils containing rare earth iron-chromium-aluminum, including: (1) transferring the rare earth iron-chromium-aluminum slab to a heating furnace for heating by using a hot-loading method; (2) rough rolling the rare earth iron-chromium-aluminum slab, with 7 passes and a deformation rate of 12%-16%, 18%-22%, 18%-22%, 24%-28%, 26%-30%, 28%-32%, and 30%-34% for each pass; (3) after rough rolling, heating compensation is applied to the edge of the intermediate slab; (4) after finishing rolling and coiling, a hot-rolled steel coil containing rare earth iron-chromium-aluminum is obtained. The production method of the present invention for preventing edge cracking of hot-rolled steel coils containing rare earth elements (iron, chromium, and aluminum) significantly reduces the problem of edge cracking in hot-rolled steel coils containing rare earth elements (iron, chromium, and aluminum). It can produce hot-rolled steel coils with a rare earth content of 0.02%-0.12%, a thickness of 3.0-3.5 mm, and a width of 1000-1300 mm, preventing edge cracking of hot-rolled steel coils, reducing the risk of breakage after uncoiling, and ensuring the smooth progress of subsequent production.

This application discloses a cooling method, apparatus, electronic equipment, readable storage medium, and hot-rolled steel strip production system for a laminar flow cooling roller conveyor, applicable to the field of metallurgical technology. The method includes acquiring temperature detection values ​​from hot metal detectors deployed at the inlet and outlet of the finishing mill. When the first and second temperature detection values ​​first meet the condition of no steel strip in the laminar flow cooling zone, a cooling water delivery command is sent to the laminar flow cooling water system according to a preset unit cooling time to cool the laminar flow cooling roller conveyor. When the first and second temperature detection values ​​again meet the condition of no steel strip in the laminar flow cooling zone, and the current time reaches a preset cooling interval, a cooling water delivery command is sent. This application overcomes the shortcomings of related technologies that cannot guarantee the cooling of the entire cooling roller conveyor, enabling precise control of the laminar flow cooling roller conveyor for cooling.

The utility model discloses reversible hot rolling equipment for metal plates, which comprises a hot rolling frame, placing mechanisms arranged on two sides of the hot rolling frame, an auxiliary mechanism mounted on the inner wall of the hot rolling frame, a processing mechanism arranged on the inner wall of the hot rolling frame, and detection mechanisms mounted on two sides of the processing mechanism. According to the metal plate processing device, a metal plate needing to be processed can be conveyed, adjustment and limitation can be conducted according to the thickness and width of the metal plate, the situation that the processed metal plate deviates is reduced, meanwhile, a detection mechanism is arranged on a processing mechanism, the hot-rolled metal plate can be detected in real time, the thickness change of the metal plate can be monitored in real time, and the processing efficiency is improved. The processing parameters are automatically adjusted according to needs, the product size precision is ensured, and through the auxiliary mechanism arranged on the hot rolling frame, not only can the metal plate needing to be heated be subjected to auxiliary heating treatment, but also the metal plate subjected to hot rolling treatment can be subjected to auxiliary cooling treatment.

The invention belongs to the field of hot continuous rolling strip steel production processes, and particularly relates to a process lubricating method for a hot continuous rolling unit in the rolling process, which comprises the following steps of: determining a process lubricating oil proportion of each rack; collecting a head and tail cutting signal of a flying shear and an on-load signal of a rolling mill, and preparing an oil-water mixture based on the proportion of process lubricating oil; after an on-load signal of the F1 is triggered, an oil-water mixture is sprayed to a supporting roller of the F1, and the rotating supporting roller transmits the oil-water mixture to a working roller in contact with the supporting roller; after the on-load signals of F2, F3 and F4 are triggered, delaying for first preset time, and spraying an oil-water mixture onto a working roller of a rack; after an on-load signal of the F5 is triggered, delaying a second preset time and spraying an oil-water mixture onto a working roller of the F5; and when a tail cutting signal of the flying shear is triggered, the hot rolling oil valve is closed, and the oil-water mixture injection valve is closed after a third preset time is delayed after the tail cutting signal is triggered. The problem of slipping of the first rolling mill is completely eradicated.

The invention discloses a temper mill and finishing mill system for a pickling galvanizing unit, and relates to the technical field of strip steel leveling in steel production equipment, the temper mill and finishing mill system comprises an uncoiler, a pickling section, a temper mill, a galvanizing section, a finishing mill and a coiler which are arranged along the direction of a production line, the temper mill is a four-roller temper mill, the temper mill adopts a dry-type leveling mode, and the recoiling machine is a four-roller temper mill. A working roller wiper and a supporting roller wiper are arranged, and a suction device is arranged to suck away dust generated in the leveling process; and the finishing machine is provided with a wet finishing spraying beam and a high-pressure water cleaning trolley, so that the real-time lubrication and cleaning of strip steel and rollers can be realized, and the quality of a galvanized sheet finished product is effectively ensured.

The utility model relates to a metal strip cold rough rolling on-line air cooling temperature control device in the technical field of metal strip processing, which comprises a fixed bottom block which is arranged on the outer side of the top of a metal strip conveying belt through a bolt, a guide groove is formed in the top of the fixed bottom block, and through holes are symmetrically formed in the top of the fixed bottom block; the air cooling mechanism is movably clamped to the top of the fixed bottom block, through mutual cooperation of the fixed bottom block, the air cooling mechanism and the connection limiting mechanism, the bottom end of the air cooling mechanism can be clamped into the inner side of a guide groove in the top end of the fixed bottom block, so that preliminary connection limiting is carried out, then the connection limiting mechanism is adjusted, and the air cooling mechanism and the connection limiting mechanism are connected in a clamped mode; the connecting limiting mechanism can be automatically inserted into the inner side of a through groove in the top end of the fixed bottom block under the action of gravity, so that connecting and fixing are conducted, and the air cooling mechanism can conduct air cooling temperature control treatment on the metal strip located on the inner side of the conveying belt; the metal strip can be conveyed into the cold rough rolling device through the conveying belt to be machined, and operation is convenient.

The invention relates to the technical field of strip rolling, and discloses a device for rolling an invar alloy ultra-thin strip by using a double-sided electrified auxiliary twenty-high rolling mill, which comprises a rolling mill, a double-sided electrified auxiliary twenty-high rolling mill, a double-sided electrified auxiliary twenty-high rolling mill, a double-sided electrified auxiliary twenty-high rolling mill, a double-sided electrified auxiliary twenty-high rolling mill and a double-sided electrified auxiliary twenty-high rolling mill, the electrifying resistance rollers are arranged on the left side and the right side of the rolling mill and connected with the upper surface or the lower surface of the strip, the electrifying resistance rollers are communicated with a power source, and the electrifying resistance rollers, the strip and the power source form a strip electrifying heating loop; a plurality of resistor elements are sequentially arranged in the electrified resistance roller in the length direction of the electrified resistance roller, the resistor elements are sequentially connected in series and connected with an external control center, the control center is used for controlling the resistance of the resistor elements, the electrified resistance roller is made of conductive materials, and the resistor elements are attached to the inner surface of the electrified resistance roller. The transverse temperature of the strip can be adjusted in a partitioned mode, and the problem of current instability is solved.

The utility model discloses a grinding scrap collecting device and an acid rolling line, and the grinding scrap collecting device comprises a frame provided with a through space for strip steel to pass through; the slag receiving tank is located on one side of the strip steel, and the bottom of the slag receiving tank is rotationally connected to the frame through a rotating shaft so as to be switched between a collecting position and a waiting position; the slag receiving groove comprises a groove body and a protective lip, the protective lip comprises a first lip piece and a second lip piece which are connected to the same groove wall of the groove body, the lower ends of the first lip piece and the second lip piece are connected to the inner wall and the outer wall of the groove body respectively, and the upper ends of the first lip piece and the second lip piece incline towards the strip steel. The first lip piece and the second lip piece are respectively provided with an attaching surface attached to the surface of strip steel, and the attaching surface of the first lip piece is higher than the attaching surface of the second lip piece; wherein under the condition that the slag receiving groove is located at the collecting position, the binding face of the first lip piece and the binding face of the second lip piece are both attached to the strip steel, so that chippings fall into the slag receiving groove; and when the slag receiving groove is located at the waiting position, a gap is formed between the slag receiving groove and the strip steel.

The invention discloses a thin-gauge pipeline steel plate with low-temperature toughness stable control based on strain design and a manufacturing method of the thin-gauge pipeline steel plate, and belongs to the technical field of low-carbon microalloyed steel production. The method comprises the steps of molten steel smelting, external refining (LF refining), RH vacuum degassing, continuous casting, casting blank heating, controlled rolling, relaxation, heat compensation in a heat preservation box, cooling and air cooling to the room temperature. According to the invention, the low-temperature toughness stability control of the L450M pipeline steel plate for rolling the gas pipeline based on the strain design is realized, wherein the L450M pipeline steel plate is used for rolling the thin specification (9-13mm) and the pipe diameter of the gas pipeline is less than phi 1016mm.