199 results about "Mill scale" patented technology

The invention discloses a preparation method of a high-quality solid welding wire. The preparation method comprises the following steps of S1, raw material selection and pretreatment, S2, a drawing forming process, S3, surface treatment, S4, aftertreatment and finishing, S5, quality detection and control and S6, packaging and storage. Before work starts, raw materials are selected, low-carbon steel is selected, the purity of S is controlled to be smaller than or equal to 0.010%, the purity of P is controlled to be smaller than or equal to 0.015%, the size is controlled to be phi 5.5-6.5 mm, then oxide skin is removed through sulfuric acid for 5-10 min, after flushing is conducted through high-pressure water, residual acid is neutralized through alkali liquor, corrosion is prevented, then hot air drying is conducted at the temperature of 100-120 DEG C, it is guaranteed that no water exists on the surface, and the low-carbon steel is obtained. According to the method, the raw materials are pretreated, so that the cleanliness of the raw materials is improved, the production quality of the thick solid welding wire is improved, then the raw materials are smelted after being pretreated, and then a mixture of rare earth, deoxidized silicon, alloy vanadium and copper phosphorus tungsten carbide is added according to different environment requirements so as to increase the variety of the welding wire.

Provided are a method for controlling the amount of scale formation of a metal material, an apparatus for controlling the amount of scale formation, and a method for operating a heating furnace, for controlling the amount of scale formation within an appropriate range when it is desired to reduce the amount of carbon dioxide emission by using hydrogen and ammonia as fuel gas for a heating furnace for heating a metal material. A method for controlling the scale generation amount of a metallic material in a heating furnace, in which a hydrogen-based gas having hydrogen and / or ammonia as the total amount is used as a fuel, the metallic material is heated by a burner, and the flow rate of the hydrogen-based gas used for the fuel heated by the burner is set as an operating parameter of the heating furnace. The amount of scale generated on the surface of the metal material is controlled on the basis of the set flow rate of the hydrogen-based gas. Furthermore, it is preferable that at least one of the heating time and the heating temperature of the metal material in the heating furnace be further set as the operating parameters of the heating furnace.

This invention relates to the field of welding technology, specifically disclosing a low-temperature welding method for thin-walled plates used in lightweight automotive components. The welding method includes the following steps: S1: Raw material preparation, taking raw material, preparing a constant-temperature welding chamber and welding equipment, and a heating gun; S2: Raw material transfer, placing the raw material and welding equipment in the constant-temperature welding chamber; S3: Raw material cleaning, grinding the welding area of ​​the raw material to remove dirt, oxide scale, etc. This invention avoids the problems of excessive temperature difference and rapid cooling rate during welding of thin-walled plates under low-temperature external conditions by setting a constant-temperature welding chamber and limiting its ambient temperature to no lower than 0℃, preferably 7℃. Furthermore, the sealed constant-temperature environment ensures uniform and stable temperature in the welding space, preventing stress accumulation in the weld and base material due to environmental temperature changes, thereby reducing appearance defects such as warping, deformation, and wrinkles in the thin-walled plate.

The utility model relates to the technical field of metal processing, in particular to a black metal smelting rolled product oxide skin scraper which comprises a processing table, the surface of the processing table is fixedly connected with a fixing frame, a moving structure is arranged in the fixing frame, the bottom of a sliding block is fixedly connected with a connecting column, and the connecting column is fixedly connected with a sliding block. And a scraping structure is arranged at the bottom of the connecting column, a guide groove is formed in the surface of the machining table, two sets of protruding blocks are fixedly connected to the bottom of the machining table, a collecting box is slidably connected to the surfaces of the protruding blocks, and handles are fixedly connected to the surfaces of the two sides of the collecting box. According to the device, the moving structure and the scraping structure are arranged, different surfaces of a metal profile can be scraped without adjusting the angle of the metal profile, the device is convenient to use, the guide groove, the protruding block and the collecting box are arranged, oxide skin can be collected in a centralized mode, and the situation that the oxide skin is left on the surface of the machining table and influences machining is avoided.

This invention relates to an online method for preparing an anti-oxidation coating on the inner wall of a seamless steel pipe, comprising the following steps: placing a steel billet heated to 1000°C to 1300°C on a piercing platform; performing a first piercing by moving the mandrel relative to the steel billet; performing a second piercing on the steel billet after the first piercing; during the first piercing, when the mandrel is submerged in the steel billet, spraying anti-oxidation powder onto the inner wall of the steel pipe using a powder spraying device. Using this online method for preparing an anti-oxidation coating on the inner wall of a seamless steel pipe, anti-oxidation substances can be sprayed onto the inner wall of the steel pipe simultaneously with piercing, solving the technical problem of severe oxidation of the inner wall of the steel pipe during the piercing process through online preparation. This avoids the oxide scale generated damaging the quality of the inner wall of the seamless steel pipe in subsequent piercing processes, avoids the need for additional grinding processes, and even avoids the scrapping of the steel pipe.

This invention relates to the field of iron and steel metallurgy and proposes a method for controlling the corrosion-resistant iron oxide scale on the surface of hot-rolled steel plates. The method includes the following steps: First, molten steel is smelted and cast into steel billets; then, the steel billets are heated to 550-600℃ and held at an air-fuel ratio of 1.1-1.3 for 20-30 minutes; subsequently, the temperature is raised to 1100-1150℃ and held at an air-fuel ratio of 1.0-1.1 for 40-60 minutes; finally, the temperature is raised to 1180-1220℃ and held at an air-fuel ratio of 0.9-1.0 for 20-30 minutes to obtain the heated steel billet; the heated steel billet is then hot-rolled and cooled to obtain the steel plate. This technical solution solves the problems of uneven iron oxide scale growth and poor adhesion to the matrix in related technologies.

The application belongs to the technical field of metal heat treatment, and particularly relates to a continuous heat treatment device and method for a spinning pulley, which is aimed at the oxide scale carried on the workpiece which is easy to fall into the quenching liquid, and is mixed and suspended in the quenching liquid along with the sludge and colloid generated by the oxidation of the quenching oil, so as to cause the rapid accumulation of impurities in the quenching liquid, and thus frequent cleaning treatment of the quenching liquid is required, the heat treatment continuity is affected, and the workpiece heat treatment quality is affected. The following scheme is proposed, including a heat treatment frame. The continuous heat treatment device and method for the spinning pulley disclosed by the application have the effects of improving the heat treatment continuity and the workpiece heat treatment quality, the device can suck the quenching liquid in the sinking area of the workpiece in real time, so as to avoid the mixing and diffusion of the quenching liquid, thereby avoiding the rapid accumulation of impurities in the quenching liquid, and the sucked quenching liquid is rapidly treated and circulated, so as to ensure the long-time use performance of the quenching liquid.

The application relates to the technical field of metal welding, and discloses a furniture metal sheet welding process based on a multi-section compression anti-warping structure, which comprises the following steps: S1, checking the sheet material, thickness and surface state, making the sheet material meet the requirements, and clearly defining the weld position and length; S2, using the methods of chemical cleaning, mechanical polishing and sand blasting to remove the oil stains, rust, oxide scale impurities on the surface of the metal sheet, making the surface expose the metal luster, and ensuring the welding quality. The furniture metal sheet welding process based on the multi-section compression anti-warping structure can effectively solve the problems in the prior art that plastic deformation is caused during the welding of the metal sheet, and then the sheet appears the warping phenomenon; the warping can make the welded metal sheet deviate from the originally designed size specification, causes the poor cooperation in the subsequent assembly process, increases the assembly difficulty and cost, and even causes the problem that the whole product cannot be normally assembled.

This invention discloses a production method for 40-80mm thick Q420N series high-strength wind power equipment steel plates, comprising the following steps: Step 1: smelting and continuous casting; Step 2: slab heating; Step 3: high-pressure water descaling; Step 4: controlled rolling process; Step 5: cooling; Step 6: heat treatment, wherein the slowly cooled steel plate undergoes surface shot blasting to remove oxide scale, and then is subjected to a normalizing and weak water cooling process in a quenching furnace; the invention also defines the chemical composition of the Q420NE series steel plate by mass percentage. By optimizing the chemical composition design and coordinating controlled rolling and cooling processes, and adopting normalizing rapid cooling technology (NAC), this invention achieves a unified high strength, high toughness, excellent weldability, and thickness-direction uniformity in the steel plate without relying on a large amount of precious alloys, meeting the requirements of the harsh service environment of wind power equipment.

The casting mechanism comprises a rack, a portal frame, an execution assembly, a material containing assembly, a material removing assembly and a cleaning box, the material removing assembly comprises a circular plate, a feeding port, a material shoveling piece, a baffle and a surrounding edge, the feeding port, the material shoveling piece and the baffle are arranged at the top of the circular plate, and the surrounding edge is installed on the outer side of the top of the circular plate; according to the material removing device, the material removing assembly is arranged and driven by the execution assembly, the distance between the material shoveling piece and the liquid level of molten aluminum can be accurately adjusted, the impurity removing requirements of different liquid level heights are met, the driving piece drives the circular plate to rotate, the material shoveling piece is driven by the baffle to shovel oxide skin through the feeding opening, and the material shoveling piece is driven by the baffle to shovel the oxide skin through the baffle and the surrounding edge. The three material shoveling pieces distributed in a surrounding mode synchronously shovel the oxide skin through the feeding port, the included angle of the shoveling face ranging from 15 degrees to 30 degrees is matched, the impurity removing efficiency is greatly improved, it is guaranteed that the oxide skin is thoroughly removed, manual close-distance operation is not needed, and automatic oxide skin removing is achieved.

This invention discloses a method for preparing high-elongation bars for cold forging, belonging to the field of aluminum alloy preparation technology. Through optimization of composition and process, the prepared bars possess high purity, uniform and fine equiaxed grain structure, and excellent plasticity, with significantly improved elongation. This meets the stringent requirements of cold forging for high material plasticity, resulting in a bright, crack-free surface and uniform grains after cold forging, overcoming problems such as oxide scale, coarse grains, and poor dimensional accuracy caused by hot forging. Furthermore, the introduction of modified talc and sodium nitrate as refining agents further promotes uniform microstructure, achieving high elongation and excellent cold forging performance.

Disclosed is an ultra-high-strength steel having excellent plasticity, comprising in mass percent the chemical elements: C: 0.26-0.30 wt %; Si: 0.8-1.00 wt %; Mn: 2.80-3.30 wt %; Al: 0.04-0.08 wt %; with the balance being Fe and other inevitable impurities. Also disclosed is a manufacturing method for manufacturing the ultra-high-strength steel having excellent plasticity, comprising the following steps: (1) smelting and thin slab continuous casting; (2) heating; (3) hot rolling, wherein an oxide scale on the surface of a hot-rolled steel strip has a thickness of ≤6 μm, and (FeO+Fe3O4)≤40 wt % in the oxide scale on the surface of the hot-rolled strip steel; (4) acid pickling or acid pickling and cold rolling; and (5) continuous annealing: annealing at 800-920° C. and performing slow cooling at 3-10° C. / s to 690-760° C.; performing fast cooling to 250-350° C. at 50-100° C.; and then heating to 360-460° C., maintaining the temperature for 100-400 s and cooling to room temperature.

The utility model discloses a uniform galvanizing device for cold-rolled strip steel, and relates to the technical field of strip steel galvanizing. The cleaning device comprises a galvanizing box, a cleaning mechanism is arranged on the galvanizing box, the cleaning mechanism comprises a cleaning box fixedly connected to the left side of the galvanizing box, and the top and the bottom of the cleaning box are each connected with two sliding rods in a sliding mode. The surface of the strip steel is cleaned through the cleaning mechanism, so that oxide skin, greasy dirt and impurities on the surface of the strip steel are effectively removed, the substances are prevented from hindering full contact between molten zinc and the strip steel, the molten zinc can be evenly spread on the surface of the strip steel, micro unevenness and defects caused by various impurities on the surface of the strip steel can be eliminated, and the service life of the strip steel is prolonged. The physicochemical properties of the surface of the strip steel are more uniform and consistent, so that zinc ions can be uniformly deposited in the electrochemical reaction process, the uniform and continuous thickness of a zinc coating is finally ensured, the zinc plating quality is greatly improved, the corrosion resistance of the strip steel is improved, and the service life of the strip steel is prolonged.

The invention discloses a pretreatment device and method for a steel bar for a thrust rod, and belongs to the field of steel bar machining. Comprising a feeding assembly, and the feeding assembly comprises a supporting frame; the grinding assembly comprises an equipment frame arranged on one side of the supporting frame, multiple sets of fixing bases are arranged on the equipment frame, and a first grinding part is arranged on each set of fixing bases; the dust collection assembly comprises a bearing frame body arranged on one side of the equipment frame, and a moving part is arranged on the bearing frame body; the material receiving assembly is arranged below the supporting frame body; and the collecting assembly is arranged below the supporting frame body. According to the pretreatment device and method for the steel bar for the thrust rod, through cooperation of the feeding assembly and the grinding assembly, the steel bar is comprehensively ground so that oxide skin and defects can be removed, the surface layer quality can be improved, the assembly precision and the transmission stability can be guaranteed, stress concentration can be reduced, and the service life of the thrust rod can be prolonged; a dust collection assembly forms a dust treatment structure, dust interference on welding is prevented, and the reliability of the thrust rod is improved.

This utility model belongs to the field of steel manufacturing technology and discloses a descaling device, including a frame base, which includes a pressure roller frame and a motor frame; a roller frame is also provided on the pressure roller frame; it also includes a lower roller and an upper roller arranged parallel to the lower roller; the lower roller is fixed to the pressure roller frame by a bearing seat, and its end near the motor frame is connected to the pressure roller motor through a coupling, and the pressure roller motor drives the lower roller to rotate; it also includes a vertical adjustment device for adjusting the vertical movement of the upper roller and a blowing spray device. The lower roller drives the material forward, and the upper roller squeezes and rolls up the oxide scale on the surface of the material. When the material advances to the blowing spray device, high-pressure gas is sprayed out from the blowing spray device, blowing away the oxide scale rolled up on the surface of the material, and removing the oxide scale by the impact force of the gas. The vertical adjustment device allows the upper roller to be adjusted in the vertical direction through the elastic force of the spring on the lower spring sleeve.

The present application belongs to the technical field of metal plastic working, and relates to a method for identifying surface cracking of a blank during hot working of steel. The specific steps are as follows: obtaining an infrared image of the surface of the blank; identifying a contour region of the surface of the blank; calculating the median value of the temperature values or infrared radiation intensity values of all pixel points in the contour region of the surface of the blank, and performing noise reduction processing on the infrared image by using the median value; identifying and calibrating the bare metal surface and the oxide scale covered surface in the contour region of the surface of the blank; calculating the temperature or infrared radiation intensity gradient of each pixel point in the contour region of the surface of the blank; for each identified crack, performing fractal calculation to determine the morphology of the crack, and classifying the possible causes of the crack. The present application solves the problem of online automatic identification of surface cracking of high-temperature metal during hot working, avoids false positives and false negatives caused by manual monitoring, and can output crack morphology data to provide data for detailed technical analysis.

The invention discloses a shot blasting, sorting, cleaning and recycling system. Steel shots, oxide skin and dust are separated through a stirring kettle by means of flowing of a liquid medium. An electromagnetic module attached to the side wall of the kettle body is arranged outside the kettle body, the magnetic field of the electromagnetic module is changed through a current control module, and gradient magnetic attraction is generated to enable steel shots, oxide skin and dust to be mixed with liquid in sequence and discharged; the invention further discloses a shot blasting, sorting, cleaning and recycling method. The method comprises the steps of liquid mixing and stirring (enabling dust, steel shots and oxide skin to be preliminarily dispersed), gradient magnetic attraction (enabling a high-intensity magnetic field to attract the steel shots and enabling a medium-intensity magnetic field to attract the oxide skin) and step-by-step impurity removal (firstly removing non-magnetic dust liquid, then enabling the oxide skin to be separated and discharged by lowering the magnetic field, and finally achieving thorough separation of the steel shots and the impurities). And dust, oxide skin and steel shots in waste materials generated by shot blasting are effectively separated.

The utility model relates to the technical field of feeding devices, in particular to a dust hood of a feeding device, which comprises a hood body, a slide rail and a dust collection groove, the slide rail and the dust collection groove are arranged in the hood body, the top of the hood body is arranged in an openable form, the dust collection groove is arranged on at least one side of the slide rail, a hook is arranged on the dust collection groove, and the dust collection groove is connected with the slide rail. According to the design, the sliding rail is used for stably transporting a strip steel coil, uncoiling is completed in the cover body, impurities such as dust and oxide skin scraps generated in the uncoiling process are controlled in the cover body, pollution to other areas of a workshop is effectively prevented, the falling dust and oxide skin scraps can be smoothly collected by the dust collecting groove, and the service life of the strip steel coil is prolonged. The cleaning and maintenance work of operators on the equipment is greatly simplified, and the maintenance difficulty and workload are reduced.

The present application relates to high-quality aluminum alloy plate processing technology field, disclose a kind of copper clad aluminum alloy annealing-free rolling method, comprising: removing composite blank surface dirt and oxide skin and completing straightening, send into cantilever rolling mill;Control 9 pass continuous cold rolling, so that single pass reduction rate is in the range of 8% to 15%, the rolling speed of the first 8 passes is gradually increased from 0.4m / s to 1.0m / s, and the single pass reduction rate is distributed in gradient decreasing;Finished pass rolling speed is stabilized at 1.2m / s, combined with preset pressure interval spraying emulsion, the present application offsets heterogeneous metal interface shear stress accumulation by discretization distribution total deformation, balances oil film thickness and exports interface heat using dynamic pressure lubrication mechanism generated by high-speed rolling, realizes copper layer and aluminum matrix synchronous plastic extension under the condition of no intermediate annealing, ensures finished product size precision and surface quality.

This utility model relates to the field of metal processing technology and provides a metal heat treatment cooling device, including a support frame, a conveyor frame fixedly installed on the support frame, a cooling mechanism and a cleaning mechanism fixedly installed on the conveyor frame, the cleaning mechanism including a cleaning box fixedly installed on the conveyor frame; a drive screw is rotatably installed on the inner wall of the cleaning box, a sliding block is threadedly connected to the drive screw, a lifting frame is fixedly installed on the sliding block, the lifting frame is slidably connected to the inner wall of the cleaning box, multiple brush rollers are rotatably installed on the lifting frame, and a second geared motor is fixedly installed on the lifting frame, the second geared motor is driven to drive the multiple brush rollers, and the sliding block is moved longitudinally by the drive screw, thereby utilizing the multiple brush rollers to contact the cooled metal parts, the rotating brush rollers remove the oxide scale on the surface of the metal parts through the bristles, and the cleaning efficiency is higher.

The invention discloses an anti-oxidation special steel high-speed wire decarburization prevention material which is prepared from the following components in parts by weight: 30-50 parts of a component A, 30-50 parts of a component B, 10-30 parts of a component C, 10-30 parts of a component D and 5-10 parts of a pigment, the component A is internally provided with boron modified adamantane, epoxy bentonite, silicon phosphate, amino acid potassium and amino modified triazine, and the component D is internally provided with boron modified adamantane, epoxy bentonite, silicon phosphate, amino acid potassium and amino modified triazine. The component B is internally provided with nano graphene, polyvinyl alcohol, a transparent film and benzoic acid, and the component C is internally provided with SiO2, Al2O3, talcum powder and gypsum powder. After the product is brushed, a coating is compact, the texture is hard, no gap or void exists, the oxidation loss of steel and iron during heat treatment and the procedure of removing oxide skin are avoided through coating smearing, and the coating quality is improved. The specification and the size of the workpiece are more accurate; fatigue strength reduction caused by metal decarburization during heat treatment is avoided, surface gas absorption of metal during heat treatment is avoided, and metal embrittlement is prevented.

This application discloses a method (100) for preparing low-cobalt soft magnetic alloy strip, comprising: weighing raw materials (S102), which, by weight percentage, include: 3wt%-12wt% Co, 0.2wt%-0.8wt% Cr, 0.6wt%-2.5wt% Si, 0.03wt%-0.06wt% Nb, 0.2wt%-0.8wt% Mn, 0.01wt%-0.05wt% C, with the balance being Fe and unavoidable impurities; melting and casting the raw materials into an ingot to form a billet (S104); removing the oxide scale from the billet (S106); and further processing the raw materials. The billet after removing the oxide scale is heated (S108); the heated billet is rolled into a strip (S110); the strip is water-quenched and solution-treated to form a finished strip (S112); the finished strip is cold-rolled at least once until a set first thickness is reached (S114), wherein the total deformation is controlled at 50-65%; softening annealing is performed (S116); the finished strip of the first thickness is cold-rolled at least once again (S118) until a set second thickness is reached; the finished strip of the second thickness is heat-treated and annealed (S120) to obtain a set hardness value.

The invention provides a method for eliminating the color difference defect on the surface of hot-rolled low-carbon thin strip steel with high efficiency and low cost. According to the method, the chemical components and the strip casting temperature of the hot-rolled low-carbon thin strip steel and the introduction amount of N2 protective atmosphere in the first hot box, the second hot box and the third hot box are optimized, meanwhile, the air flow of the upper surface and the lower surface in the third hot box is controlled, the low oxidation environment is kept, it is guaranteed that rolling lubrication of the hot-rolled low-carbon thin strip steel is guaranteed, and thin oxide skin is generated before rolling; and then the layer cooling outlet temperature and the coiling temperature are controlled, and the uniformity of the strip steel transverse cooling outlet temperature and the coiling temperature is guaranteed. By applying the method, the thickness and the structure of the hot-rolled low-carbon thin strip steel oxide skin can be uniform and consistent, and the defect of color difference on the surface of the thin-strip cast-rolled low-carbon thin strip steel is efficiently eliminated at low cost.

This utility model relates to a surface deburring device for pump body casting, belonging to the field of pump body casting and grinding technology. It mainly solves the problem of time-consuming removal of dirt and oxide scale, and proposes the following technical solution: It includes a fixed frame, with a cylinder fixedly connected to the back of the fixed frame. A concave connecting plate is fixedly connected to the output end of the cylinder, and a support plate is fixedly connected to the bottom of the concave connecting plate. A deburring mechanism is rotatably connected to one side of the support plate via a bearing, and a servo motor is fixedly connected to the other side of the support plate. This utility model, by positioning the deburring mechanism inside the cleaning tank, allows the pump body to be immersed in the metal cleaning liquid inside the tank. This design enables the cleaning of dirt and oxide scale from the pump body surface, preventing the time-consuming problem of abrasive particles in removing dirt and oxide scale, further improving the efficiency of pump body deburring, and ensuring the polishing gloss.

The invention discloses a vertically-stacked transverse bottom-in top-out vertical pushing heating furnace, and relates to the technical field of steel billet electric heating furnaces, the vertically-stacked transverse bottom-in top-out vertical pushing heating furnace comprises a vertically-arranged heating furnace, the heating furnace internally comprises a vertically-arranged heating coil, the heating coil is internally provided with a water-cooling roller way, and the water-cooling roller way is internally provided with a plurality of horizontally-placed and vertically-stacked steel billets; an arc-shaped feeding rail is arranged at the bottom of the water-cooling roller way, a side pushing device used for pushing steel billets is arranged on one side of the arc-shaped feeding rail, and a pressing device used for pressing the steel billets is arranged above the arc-shaped feeding rail. A collecting hopper is arranged at the bottom of the heating furnace. Due to the fact that billets are vertically stacked and transversely fed from the bottom and discharged from the top, even if fallen oxide skin exists, the fallen oxide skin can directly and vertically fall out of the heating furnace, cleaning and collecting are convenient, the oxide skin cannot fall into a heating coil, and the cleaning difficulty is reduced; and meanwhile, due to the design of vertical arrangement of the heating furnace, the occupied area is reduced, and the working requirements of various billet lengths can be met.

A dust prevention method for magnesium-lithium alloy vacuum melting comprises the steps that oxide skin impurities on the surfaces of all metal raw materials except pure lithium are removed, water vapor in the raw materials and a mold is removed, and the metal raw materials are kept clean and dry; residual dust on the inner wall of the vacuum furnace is cleaned to below 5mg / m, and water vapor in the vacuum furnace is removed to below 5%; the cavity of the vacuum furnace is kept clean and dry to form a low-air-pressure or vacuum environment; all the raw materials and the mold are put into a smelting crucible and a cavity of a vacuum furnace respectively, after the vacuum furnace is vacuumized, dry argon is filled into the cavity of the vacuum furnace till the pressure reaches 0.4-0.9 atmospheric pressure, and smelting and casting are conducted; the generation of dust is inhibited from the source, and the purity and efficiency in the gold smelting process are greatly improved; and dust is prevented from floating in the vacuum furnace in a weightlessness state due to overlarge negative pressure in the vacuum furnace, so that the observation window of the vacuum furnace can be protected from being influenced by the dust, normal work of the observation window is ensured, and convenience is provided for operators to observe and control the smelting process.

The invention belongs to the technical field of hot work die steel production, and provides a production method of W-containing high-Mo hot work die steel and remelting auxiliary equipment during forging of the W-containing high-Mo hot work die steel, and the W-containing high-Mo hot work die steel comprises, by mass, 0.35% of C, 2.50% of Mo, 5.0% of Cr, 0.40% of V, 0.75% of W, 0.20% of Si, 0.25% of Mn and the balance Fe. The method comprises the specific production steps of electric arc furnace smelting, external refining, gas protection casting, electroslag ingot remelting, heating before forging, remelting during forging and heat treatment after forging, and in the three-upsetting and three-drawing forging process, remelting auxiliary equipment during forging of the W-containing high-Mo hot work die steel is used for removing oxide skin. The method is beneficial to improving the thermal fatigue cracking resistance, thermal shock cracking resistance, thermal wear resistance and plastic deformation resistance of the product, is beneficial to producing hot work die steel for precision dies, and is beneficial to improving the three-upsetting and three-drawing forging efficiency and the production safety.

The application discloses a kind of horizontal continuous casting lead-free free-cutting copper ingot production with hot rolling treatment device, belong to copper ingot production technical field, including bottom plate, two vertical plates are symmetrically connected in bottom plate upper end, clamping assembly for fixing copper ingot is installed in vertical plate, commonly connected with horizontal plate between two vertical plates, movable plate is slidably connected in horizontal plate lower end, rotating shaft is rotatably connected on the side wall of movable plate side, rotating assembly for driving rotating shaft rotation is installed on movable plate, one end of rotating shaft is connected with rotary disc, transmission rod is hinged on the other side of rotary disc.The application overcomes the deficiencies of prior art, by setting the mutual cooperation between bottom plate, movable plate, rotating shaft, rotary disc, knocking rod, driving rod, gear, rack, cylinder, upper top plate and servo motor and other structures can automatically knock and clean the surface scale of copper ingot, prevent the surface scale from affecting subsequent processing of copper ingot, reduce manual labor, so as to improve the applicability of device.

The invention relates to the technical field of cold heading steel wire rods, and discloses a cold heading steel wire rod surface quality control technology which comprises the steps of S1, a steel billet pretreatment technology, S2, a heating rolling optimization technology, S3, a finish rolling process surface protection technology, S4, a cooling and post-treatment technology and S5, a finished product quality detection technology. Through precise shot blasting (the oxide skin removal rate is larger than or equal to 99%), AI intelligent flaw detection and graded grinding (the percent of pass is larger than or equal to 99.5%), the oxide skin, cracks and scabbing defects on the surface of the steel billet are thoroughly removed, the surface roughness Ra after grinding is smaller than or equal to 1.6 micrometers, a clean and uniform substrate is provided for follow-up rolling, the defect omission ratio is reduced to 0.5% or below, and the production cost is reduced. The process can effectively control the heating and rolling defects, the problems of overburning and exceeding of a decarburized layer are avoided through stepped heating control, and the unilateral decarburized layer is stably controlled to be smaller than or equal to 0.8% D; the scale removal rate is larger than or equal to 99% through two-stage high-pressure water descaling, the scale press-in defect is thoroughly overcome, and the residual quantity of the scale on the surface after rolling is almost zero.

This invention relates to the field of low-temperature coating thermoforming stamping technology, and provides an oil bath stamping equipment and process, including: a chassis; a frame body, the frame body being fixedly installed on the top of the chassis, the frame body having a cavity for containing stamping oil inside; and a stamping die, the stamping die being installed in the cavity of the frame body. By placing the stamping process in an oil bath environment, the fluid isolation and lubrication effects of the stamping oil are utilized to effectively protect the low-temperature coating on the sheet metal surface, avoiding melting, peeling, and oxidation of the coating during high-temperature stamping. The stamping oil isolates air, eliminating the generation of oxide scale at the source, resulting in clean parts surfaces after stamping, eliminating the need for shot blasting, simplifying the production process, and reducing costs. The stamping oil circulation temperature control system realizes the recycling and precise temperature control of the stamping oil, ensuring the stability and consistency of process parameters and improving product quality.