Abstract: A 980 MPa-grade hot-rolled ferrite bainite dual-phase steel and a manufacturing method therefor. The chemical components of the steel comprise, in percentage by weight, 0.15-0.30% of C, 0.8-2.0% of Si, 1.0-2.0% of Mn, 0-0.02% of P, 0-0.005% of S, 0-0.003% of O, 0.5-1.0% of Al, 0-0.006% of N, 0.01-0.06% of Nb, 0.01-0.05% of Ti, and the balance of Fe and inevitable impurities. In addition, the chemical components meet the following relations: 0.05%?Nb+Ti?0.10%, and 2.5?Al/C?5.0. The microstructure of the steel is made of ferrite and bainite. The average grain size of the ferrite is 5-10 ?m, and the equivalent grain size of the bainite is less than or equal to 20 ?m. The yield strength of the steel is greater than or equal to 600 MPa, the tensile strength of the steel is greater than or equal to 980 Mpa, and the ductility is greater than or equal to 15%.

Abstract: Disclosed is a light reduction method for continuous casting of a bloom plain-barrelled roll-roll combination. The method comprises: firstly obtaining three-dimensional temperature field profile, a two-phase region, solid-phase region thickness, and solid-phase fraction of a billet, determining positions of start and end rolls of the reduction, and setting a reduction amount of each tensioner roll according to the volume shrinkage of the billet; in an interval fs=0.9-1.0 of the solid-phase fraction of the billet, performing a heavy reduction working mode; and in an interval fs=0.25-0.80 of the solid-phase fraction of the billet, performing a light reduction working mode.

Abstract: The present invention provides laminated iron having excellent printability and a preparation method therefor. The laminated iron is prepared by using a mode of performing thermal-compounding on a polyester thin film having a durable and high surface tension force and a steel plate, wherein the polyester thin film is prepared by copolymerizing terephthalic acid, isophthalic acid, ethylene glycol and a fourth component and then bidirectionally stretching a co-polymer; a feeding mole ratio is that terephthalic acid:isophthalic acid:ethylene glycol:a fourth component=(135-165):(148-194):(11-15):(0.01-12); the fourth component is selected from one or more of isophthalic-5-sulfonate, 1,4-cyclohexane dimethanol, neo-pentanediol and trimellitic acid; and 800-2000 ppm of SiO2 in parts by mass is added to a copolymerized polyester by using a mode of in-situ polymerization. The laminated iron has excellent printability and satisfies usage requirements of packaging containers for food, beverage and the like.

Abstract: A method for manufacturing a bainite high-strength seamless steel tube, comprising the following steps: smelting, manufacturing a billet, heating, perforating, rolling, stretch reducing or sizing to obtain tube, and cooling. In the cooling step, the quenching starting temperature is controlled to be at least 20° C. higher than the Ar3 temperature of the steel grade; the finish cooling temperature is controlled to be within a range between T1 and T2, where T1=519-423 C-30.4Mn, T2=780-270 C-90Mn, and the units of the T1 and the T2 are ° C.; in the formulas, C and Mn respectively represent the mass percents of element C and element Mn of the steel grade, the content of the element C is 0.06-0.2%, and the content of the element Mn is 1-2.5%; the cooling rate is controlled to be 15-80° C./s; and the finished product of the bainite high-strength seamless steel tube is directly obtained after the cooling step.

Abstract: A double-layer polyester film is of a structure having upper and lower layers. Each of the upper and lower layers comprises a copolyester and an additional resin, and is a uniform mixture of the copolyester and the additional resin. The copolyester comprises SiO2 having a mass fraction of 800-2000 ppm added by means of in-situ polymerization. The copolyester is a PET polyester modified by copolymerization of isophthalic acid, 1,4-cyclohexanedimethanol, and neopentyl glycol. The polyester film has thinner thickness, good thermal adhesion with a metal sheet, excellent resistance to deep drawing and complex deformation processing, and excellent corrosion resistance, and can be widely used in metal packaging industry.

Abstract: Disclosed is a blended polyester thin film, comprising a copolyester and a homopolyester. The thin film is composed of upper, middle, and lower layers. Each of the three layers is a homogeneous mixture of the copolyester and the homopolyester. The copolyester comprises 800-2000 ppm by mass of SiO2 added by means of in-situ polymerization. A dihydric alcohol component in the copolyester comprises ethylene glycol, 1,4-cyclohexanedimethanol, and 1,4-butanediol. The melting point of the copolyester is between 200-240° C. The blended polyester film of the present invention has excellent processability, excellent chemical resistance, such as acid and alkali resistance, and excellent uniformity. A film-coated metal plate prepared from the blended polyester thin film can meet performance requirements of metal containers for food and beverage packaging with complex molding processing and high corrosion resistance.

Abstract: Disclosed are a polyester thin film and a coated metal plate. The polyester thin film is a single-layer structure prepared from chips of a specific copolyester by means of a biaxial stretching method or a casting method, wherein the specific copolyester comprises SiO2 in an amount of 800-2000 ppm by mass added by means of in situ polymerization, and the specific copolyester is a PET polyester resulting from copolymerization modification with isophthalic acid, 1,4-cyclohexanedimethanol and neopentyl glycol. The coated metal plate comprises a metal substrate and the polyester thin film. The polyester thin film has high food safety characteristics, along with many advantages such as excellent thermal adhesion with a metal plate, excellent deep-drawing processing and complex deformation processing properties, and excellent corrosion resistance, and can be widely used in the medium-to-high end metal packaging industry.

Abstract: Disclosed is a flow-controllable tundish structure capable of filtering inclusions in molten steel. The tundish structure comprises a tundish (1), the tundish being divided into three separated cavities which comprise an impact zone cavity (1a) in the middle and pouring zone cavities (1b) at two sides thereof. A long nozzle (2) for pouring is vertically arranged in the center of the impact zone cavity, and molten steel flows down out of the long nozzle for pouring and is injected into the impact zone cavity; and a turbulence suppressor (3) directly facing the long nozzle for pouring is arranged on the cavity bottom under the long nozzle for pouring, and the molten steel flowing down out of the long nozzle for pouring impacts on the turbulence suppressor and is then buffered and mixed.

Abstract: Disclosed is provided a low yield ratio and superhigh-strength hot-rolled Q&P steel and a method for manufacturing the same, having the following chemical composition in weight percentage: C: 0.2-0.3%, Si: 1.0-2.0%, Mn: 1.5-2.5%, P: ?0.015%, S: ?0.005%, Al: 0.5-1.0%, N: ?0.006%, Nb: 0.02-0.06%, Ti: ?0.03%, O: ?0.003%, and the balance being Fe and inevitable impurities. The manufacture method comprises a stepped cooling process to finally obtain the steel with a three-phase structure containing a certain volume fraction of proeutectoid ferrite; martensite; and residual austenite, and having an excellent comprehensive performance with a yield strength of ?600 MPa, a tensile strength of ?1300 MPa, a good elongation, and a low yield ratio. The obtained Q&P steel also shows an excellent match of high plasticity suitable for easy deformabilities and wear-resistances.

Abstract: Provided is a low-yield-ratio high-strength-toughness thick steel plate with excellent low-temperature impact toughness, which comprises: 0.05%-0.11% of C, 0.10%-0.40% of Si, 1.60%-2.20% of Mn, S?0.003%, 0.20-0.70% of Cr, 0.20%-0.80% of Mo, 0.02%-0.06% of Nb, 3.60%-5.50% of Ni, 0.01%-0.05% of Ti, 0.01%-0.08% of Al, 0<N?0.0060%, 0<O?0.0040%, and 0<Ca?0.0045%, with the balance being Fe and inevitable impurities; in addition, Ni+Mn?5.5 is also satisfied. The manufacturing method for the above-mentioned steel plate comprises smelting, casting, heating, two-stage rolling, quenching, cooling after quenching, and tempering.

Abstract: Disclosed is a method for using cold rolling magnetic filtration waste, comprising using the cold rolling magnetic filtration waste as a fluxing agent for a high-ash-fusion coal so as to achieve the technical requirements of a high melting point coal in dry coal powder gasification and liquid slagging. The cold rolling magnetic filtration waste contains solid particulates with very fine particles (iron-containing particles mainly produced by friction), and the surface thereof has a cold rolling oil attached thereto, and same reacts with other aluminosilicates in coal ash at a high temperature to produce low temperature eutectic compounds such as fayalite (Fe2SiO4) and hercynite (Fe2Al2O4). The fluxing agent has characteristics such as having fine particles, being free of inorganic mineral substances, having an effective ingredient in a high content, operation thereof being simple, and being free of pollution.

Abstract: A blended polyester laminating film resistant to discoloration caused by cooking, comprising polyethylene terephthalate and polybutylene terephthalate. The blended polyester laminating film comprises three layers, i.e., upper, middle, and lower layers. One surface layer contains SiO2 in a mass fraction of 1200-2000 ppm added by in-situ polymerization. The blended polyester laminating film is manufactured by a three-layer coextrusion biaxial stretching method, and the manufacturing method is 240-275° C. A film-laminated metal sheet manufactured from the blended polyester laminating film has excellent resistance to discoloration caused by cooking, and is applied to metal containers for food and beverage packaging that require high-temperature sterilization.

Abstract: A method and apparatus for direct drying of inorganic sludge with a drum drawing process, comprising the following steps: 1) drum mixed drying of slag and sludge: respectively conveying the slag and sludge into a drum (1) in proportion, completing mixing, heat exchange, dehydration, cooling and crushing of the slag and sludge under the rolling action of the drum (1) and a steel ball to achieve cooling, crushing and drying of the slag and sludge, and directly discharging the obtained mixture; 2) slag and sludge separation: separating the steel slag and dry sludge in a manner of combining screening and rotary separation; 3) tail gas treatment: treating dusts, sulfides and organic compounds in tail gas generated by the dry sludge by using wet alkali washing and activated carbon adsorption, and discharging the treated tail gas; and 4) tailing sludge treatment: generating steam and dusts in the drum treatment of the slag and sludge, allowing dusts to enter a tail gas treatment device (4) with steam, aggregating th

Abstract: A resistance spot welding method of galvanized high-strength steel with good joint performance, in which three welding pulses are used within one spot welding schedule. The method includes applying a first welding pulse and a second welding pulse which are used for generating a nugget and suppressing the generation of liquid metal embrittlement (LME) cracks, respectively. The first welding pulse generates a nugget having a diameter of 3.75T1/2-4.25T1/2 in which T represents a plate thickness. The second welding pulse causes the nugget to grow at a rate less than a rate of growth during the first welding pulse. A third welding pulse, which is a tempering pulse, is applied for improving plasticity of a welding spot.

Abstract: A non-oriented electrical steel having excellent magnetic properties, the chemical elements thereof in percentage by mass being: Si: 0.2-1.5%, Mn: 0.01-0.30%, Al: 0.001-0.009%, O: 0.005-0.02%, C?0.005%, S?0.005%, N?0.005%, and Ti?0.002%, the remainder being Fe and other unavoidable impurities, and Al/Si?0.006 and Mn/Si?0.2. The method for producing comprises the following sequence of steps: (1) smelting; (2) hot rolling: the slab heating temperature being 850° C. to 1250° C., and the final rolling temperature being 800-1050° C.; (3) acid pickling; (4) cold rolling; (5) annealing: the annealing plate temperature being controlled between 620° C.-900° C.; and (6) coating.

Abstract: The present invention discloses a method for manufacturing a superior 13Cr tool coupler, which method comprises the following steps: manufacturing a blank; forging the blank; heating the forged blank to 600-700° C. for a stress-relief annealing; quenching; and tempering. The present technical solution can produce a superior 13Cr tool coupler which achieves a mechanic feature of 110 ksi.

Abstract: A control method and apparatus for inhibiting slag entrapment in ladle (1) during continuous casting production. An optimal control model calculating unit (11) receives related signals and data sent by a ladle weight detector (4), a molten steel flow field detector (5), a slag detector (7), a sliding gate opening detector (9), and a process signal interface unit (10), performs calculation and analysis according to an optimal control model to obtain a corresponding optimal control strategy, and outputs the strategy to an electromagnetic brake (6) and a sliding gate controller (8) for slag entrapment inhibition control. Regarding the two processes where a vortex may be formed, by means of different optimal control strategies, which respectively inhibit or destroy the formation of a vortex, slag generation is postponed, and molten steel may flow out without bringing slag out, thereby reducing residual ladle steel and improving molten steel yield.

Abstract: Disclosed is a light reduction method for continuous casting of a bloom plain-barrelled roll-roll combination. The method comprises: firstly obtaining three-dimensional temperature field profile, a two-phase region, solid-phase region thickness, and solid-phase fraction of a billet, determining positions of start and end rolls of the reduction, and setting a reduction amount of each tensioner roll according to the volume shrinkage of the billet; in an interval fs=0.9-1.0 of the solid-phase fraction of the billet, performing a heavy reduction working mode; and in an interval fs=0.25-0.80 of the solid-phase fraction of the billet, performing a light reduction working mode.

Abstract: A metallurgical technology probe insertion calibration method employing visual measurement and an insertion system thereof are provided. A vision sensor (5), a cylindrical rod (1), and a metallurgical technology probe (2) are used to construct an agreed region (6). In the agreed region (6), the vision sensor (5) acquires relative positions and orientations of the cylindrical rod (1) and the metallurgical technology probe (2), and an acquired position and orientation result is used to control a driving device (3) to insert the cylindrical rod (1) into the metallurgical technology probe (2). To improve the accuracy and reliability of the insertion, a standard probe (7) and a fixing device (4) are used together to perform effective calibration on an initial position, orientation, and axis in the insertion.

Abstract: A method for producing ultra-thin hot-rolled strip steel, the method comprising the following process steps: A. a smelting process: feeding scrap steel into an induction electric furnace (1) for smelting so that the scrap steel melts into molten steel; B. a refining process: using a ladle refining furnace (2) and a ladle vacuum degassing furnace (3) to refine the molten steel; C. a continuous casting process: casting the refined molten steel into a cast strip blank that has a thickness of 1.6-2.5 mm by means of a dual-roller thin strip continuous casting system (4); D. a hot rolling process: directly feeding the cast strip blank that was cast in the continuous casting process to a single-stand hot rolling mill (9) for rolling to produce hot-rolled strip steel, the thickness of the hot-rolled strip steel being 0.8-1.5 mm; E. a cooling coiling process: performing atomizing cooling on the hot-rolled strip steel, and coiling after the strip steel temperature is controlled to be 400-750° C.