Abstract: The present disclosure relates to an insulating coating, which comprises the following components: a water-soluble metal inorganic salt A containing a water-soluble phosphate A1, which comprises a water-soluble phosphate of at least one of aluminum, zinc, magnesium and manganese; a water dispersible organic emulsion B, which comprises at least one of an epoxy emulsion and a curing agent thereof, polyester, polyurethane, polyacrylate and an ethylene-vinyl acetate copolymer; an additive C, which comprises at least one of a structure reinforcing additive C1 and a heat-resistance reinforcing additive C2, wherein the structure reinforcing additive C1 comprises an inorganic nanoparticulate matter, and the heat-resistance reinforcing additive C2 is selected from at least one of boric acid and a water-soluble salt of molybdenum, tungsten, vanadium or titanium; an auxiliary agent D1 and a solvent D2, wherein the solid content ratio of the water-soluble metal inorganic salt A to the water dispersible organic emulsion B

Abstract: Disclosed is a hot-rolled steel for enameling having an enameling and firing strengthening property, comprising, in addition to Fe and inevitable impurities, the following chemical elements in mass percent: C: 0.03-0.07%, Si?0.05%, Mn: 1.5-2.5%, Al: 0.01-0.05%, Cr: 0.25-0.65%, Cu: 0.02-0.20%, Ti: 0.01-0.08%, V: 0.01-0.10%, and Mo: 0.01-0.10%. Accordingly, further disclosed is a manufacturing method for the hot-rolled steel for enameling, comprising the steps of: (1) smelting and casting; (2) heating; (3) hot rolling, the temperature of rough rolling being controlled to be greater than 850° C., the start temperature of finish rolling being controlled to be 900-1050° C., and the final temperature of finish rolling being controlled to be 840-900° C.; (4) laminar cooling, the cooling speed being controlled to be 10-35° C./s; and (5) coiling.

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 high-performance thermoformed component provided with a coating, and a manufacturing method therefor. The thermoformed component comprises a substrate and a coating thereon. The substrate comprises the following ingredients in percentage by weight: 0.01-0.8% of C, 0.05-1.0% of Si, 0.1-5% of Mn, 0.001-0.3% of P, 0.001-0.1% of S, 0.001-0.3% of Al, 0.001-0.5% of Ti, 0.0005-0.1% of B, 0.001-0.5% of Nb, 0.001-0.5% of V, and the remainder being Fe and other unavoidable impurities. The appearance of the thermoformed component has no color difference and no mottling. The surface oxygen content of the thermoformed component is 0.1-20 wt. %, and the ratio of the standard deviation to the average value of the surface oxygen content satisfies: 0<standard deviation of oxygen content/average value of oxygen content ?0.3. In the manufacturing method, a coated steel plate that has undergone heat treatment, transfer processing, and hot stamping is not treated with oil.

Abstract: Provided is a vacuum coating device, comprising a crucible (13), an induction heater (15) arranged on the outer side of the crucible (13); a flow distribution box connected to the top of the crucible (13) through a steam pipeline (16); a pressure regulating valve (18) and a diverter valve (19) sequentially arranged in a direction in which the steam pipeline (16) is in communication with the flow distribution box; a horizontal pressure stabilizing plate (20) arranged in the flow distribution box, a plurality of sub-nozzles (21) connected to the top of the flow distribution box; wherein a plurality of air flow distribution chambers are arranged in the diverter valve (19); a ratio of a total area of the air flow distribution chambers (Sdistribution) to an area of the steam pipeline (16) in the radial direction (Spipeline) is greater than or equal to 0.1, i.e.: Sdiversion/Spipeline?0.1.

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.

Abstract: Disclosed are a steel for a high-temperature carburized gear shaft and a manufacturing method for the steel. The steel for the high-temperature carburized gear shaft comprises the following chemical components in percentage by mass: 0.17-0.22% of C, 0.05-0.35% of Si, 0.80-1.40% of Mn, 0.010-0.035% of S, 0.80-1.40% of Cr, 0.020-0.046% of Al, 0.006-0.020% of N, 0.002-0.030% of Nb, V?0.02%, and Ti?0.01%. Also disclosed is a manufacturing method for the steel for the high-temperature carburized gear shaft, comprising the steps of: smelting and casting; heating; forging or rolling; and finishing. By reasonably controlling chemical element compositions of the steel, the steel for the gear shaft in the present invention can maintain proper austenite grain size and stability at high temperature, maintains 5-8 grades of the austenite grain size before and after the high-temperature vacuum carburizing at 940-1050° C.

Abstract: Provided are a gradient steel material having a surface layer with ferrite and an inner layer with ferrite+pearlite, and a manufacturing method, the weight percentages of the components are: C?0.15%, Si?1%, Mn?1.5%, the balance of Fe and inevitable impurities, and the surface layer of the steel material is ferrite, the inner layer is ferrite+pearlite. The manufacturing method thereof includes: smelting, casting, rolling, heat treatment; wherein, in the heat treatment step, the steel material is heated above the austenitizing temperature Ac3, and hold at the temperature more than 3 min to ensure that the material is completely austenitized; subsequently, it is cooled to a temperature below Ar1 at a cooling rate lower than 0.5° C./s. The present steel material does not need to be obtained by means of the compound preparation of different materials, and is only processed and prepared by a single material, the process is short, the procedure is simple, and the cost is low.

Abstract: A fabrication method for a steel thin-walled tailor-welded part and a hot-stamped part prepared by using the tailored welded part, the method comprising: using steel plates (10, 10, 20) to be welded which have an aluminum or aluminum alloy coating (12, 12?, 22, 22?) is used; by means of adjusting the composition of a shielding gas (50) and the composition of a welding wire (30) during a welding process, in combination with the control of the welding speed and wire-feeding speed, controlling the content of free aluminum in a weld seam to be 0.1 to 4.0 wt. %, which prevents the production of iron-aluminum intermetallic compounds in the weld seam during a tailor welding process while ensuring that an appropriate amount of ferrite which is distributed in a dispersed manner is produced in the weld seam. The weld seam structure of the obtained tailor-welded part is +1 to 15 vol. % martensite, +0 to 5 vol. % ferrite which is distributed in a dispersed manner, and the remainder is austenite.

Abstract: Provided is a replacement system for a metallurgical temperature measuring and sampling probe (200).

Abstract: A cold-rolled annealed dual-phase steel is provided, having a microstructure of ferrite and martensite, and comprising the following chemical elements in mass percentage: 0.08% to 0.1% of C, 1.95% to 2.2% of Mn, 0.1% to 0.6% of Si, 0.020% to 0.050% of Nb, 0.020% to 0.050% of Ti, 0.015% to 0.045% of Als, 0.40% to 0.60% of Cr, 0.2% to 0.4% of Mo, 0.001% to 0.005% of Ca, and the balance being Fe and other inevitable impurities. A method for manufacturing the cold-rolled annealed dual-phase steel is also provided, comprising the steps of: (1) smelting and casting; (2) hot rolling; (3) cold rolling; (4) annealing; and (5) temper rolling.

Abstract: Disclosed is a high corrosion-resistance strip steel and its manufacturing method. The high corrosion-resistance strip steel comprises a carbon steel base layer and a corrosion-resistance cladding layer roll-bonded with the carbon steel base layer, the corrosion-resistance cladding layer being austenitic stainless steel or pure titanium, the thickness of the corrosion-resistance cladding layer being 0.5% to 5% of the total thickness of the strip steel. The high corrosion-resistance strip steel has a high corrosion-resistance surface, good interlayer bonding performance, good mechanical properties and processability.

Abstract: A high-magnetic-induction low-iron-loss non-oriented silicon steel sheet and a manufacturing method therefor. The chemical composition by mass percentages is: C?0.005%, Si: 0.1%-1.6%, Mn: 0.1%-0.5%, P?0.2%, S?0.004%, Al?0.003%, N?0.005%, Nb?0.004%, V?0.004% and Ti?0.003%, with the balance being Fe and inevitable impurities; and at the same time satisfies: 120?[Mn]/[S]?160, and [Nb]/93+[V]/51+[Ti]/48+[Al]/27?[C]/12+[N]/14. After casting, the cooling rate in a cool-down process of casting slab is controlled, and a temperature controlling method is used to adjust the charging temperature of casting slab.

Abstract: Disclosed is a cold forged gear steel. In addition to Fe and inevitable impurities, the cold forged gear steel further comprises the following chemical elements in mass percentage: 0.15-0.17% of C, 0.10-0.20% of Si, 1.0-1.10% of Mn, 0.80-0.90% of Cr and 0.02-0.04% of Al. Correspondingly, further disclosed is a manufacturing method for the cold forged gear steel, comprising the steps of: (1) smelting and casting; (2) heating; (3) forging or rolling; and (4) spheroidizing annealing: heating to and keeping at 750-770° C., then cooling with a cooling rate of 5-15° C./h to and keeping at 700-720° C., cooling with a cooling rate of 3-12° C./h to and keeping at 660-680° C., and cooling with a cooling rate of 5-20° C./h to 500° C. or below, and then tapping and cooling.

Abstract: Disclosed is a low-cost hot-rolled steel plate for high temperature enameling. In addition to Fe and inevitable impurities, the plate further comprises a chemical composition in mass percentage as follows: C: 0.03-0.12%, Si: 0.1-0.5%, Mn: 0.3-1.5%, P: 0.03-0.10%, Al: 0.02-0.10%, Cr: 0.01-0.20%, Cu: 0.01-0.30%, N: 0.007-0.020%, and B: 0.0006-0.003%. The low-cost hot-rolled steel plate for high temperature enameling does not contain Ti, Nb, and V. The chemical composition further satisfies: P×(N?14×B/11)×103>0.3, and in the calculation, P, N, and B are respectively substituted with the numerical value before the percent sign in the mass percentage of the corresponding chemical element. Further disclosed is a manufacturing method for a low-cost hot-rolled steel plate for high temperature enameling, which comprises the following steps: (1) smelting and casting; (2) heating; (3) hot rolling: controlling the rough rolling temperature at above 850° C., the finish rolling start temperature at 900-1050° C.

Abstract: The present invention provides a method for manufacturing a cold-rolled or zinc-plated dual-phase steel plate over 980 MPa. After being subjected to hot rolling, coiling, bundling, and online heat preservation, a slab is directly sent to a cold rolling and continuous annealing process, or a cold rolling, continuous annealing, and zinc plating process, so as to obtain a cold-rolled or zinc-plated dual-phase steel plate, wherein the coiling temperature is controlled to be over 450° C. The online thermal preservation means that after uncoiling of each hot-rolled coil, an independent and airtight thermal preservation cover is closed, and the hot-rolled coil with the closed thermal preservation cover is transferred to coil rolling by means of a steel coil conveying chain or a traveling car; the thermal preservation temperature for the hot-rolled coil in the thermal preservation cover is over 450° C., and the thermal preservation duration is less than 20 hours.

Abstract: Disclosed in the present invention are TRIP steel and a preparation method therefor, a cold-rolled steel sheet, and a hot-dip galvanized steel sheet, wherein the TRIP steel comprises the following chemical components, in percentages by mass: C: 0.15-0.3%, Si: 0.6-1.0%, Mn: 1.7-2.5%, Al: 0.5-0.9%, P?0.01%, S?0.01%, N?0.007%, and Fe?90%. The TRIP steel of the present invention is based on carbon-silicon-manganese steel. By means of optimizing the proportions of carbon, silicon, manganese and aluminum, and replacing Si in traditional TRIP steel with a part of the Al, the effects of inhibiting carbide precipitation and stabilizing residual austenite can be achieved so as to ensure the mechanical properties of the TRIP steel, and the surface quality and plateability of the steel sheet can also be improved.

Abstract: Disclosed is a method for preparing a titanium-containing ultra-low-carbon steel, comprising molten iron pretreatment, converter primary smelting, vacuum refining, continuous casting, hot rolling, pickling, and cold rolling. After vacuum refining decarbonization is finished, the content of free oxygen in molten steel is 100-350 ppm; after Al is then added for deoxidation treatment, the circulation time of the molten steel is greater than or equal to 3 min; after other alloys and rare earth elements are then added to the molten steel to adjust the components of the molten steel to the specifications of a finished product, the circulation time of the molten steel is greater than or equal to 2 min; and finally, an oxide Re2O3·Al2O3 is generated in the molten steel, and the vacuum refining is finished.

Abstract: The present disclosure provides a pre-reduced pellet preparation device and method based on grate-rotary kiln. The pre-reduced pellet preparation device comprises a grate-rotary kiln pellet oxidation system and a hydrogen-based shaft furnace reduction system.

Abstract: Provided are a manufacturing method for a hot-dip galvanized steel plate, and the hot-dip galvanized steel plate. The method comprises: hot rolling a slab into a steel plate, and pickling and cold rolling after coiling; performing continuous annealing, an annealing temperature being 840-870° C., and an annealing dew point being ?10-0° C.; cooling to 710-730° C. at a cooling rate of ?10° C./s, and then cooling to 220-320° C. at a cooling speed of ?50° C./s; then heating to 410-460° C. for heat preservation for 20-100 s; and galvanization to obtain the hot-dip galvanized steel plate, the chemical element composition thereof being: C: 0.17-0.21 wt %; Si: 1.2-1.7 wt %; Al: 0.02-0.05%; Mn: 1.60-2.1 wt %; N: ?0.008 wt %; and the reminder being Fe and impurities. The hot-dip galvanized steel plate of the present invention has a yield strength of 400-600 Mpa, a tensile strength of 730-900 Mpa, an elongation of 25-35%, and a hole expansion ratio of 35-60%.