36results about How to "Production control is less difficult" patented technology

The invention relates to a hard tinned plate which is suitable for stamping processing and is produced from low carbon Al-killed steel. The original plate comprises the chemical components by weight percentage: 0.08 to 0.13 percent of C, less than or equal to 0.025 percent of Si, less than or equal to 0.65 percent of Mn, less than or equal to 0.020 percent of P, less than or equal to 0.020 percent of S, 0.02 to 0.06 percent of solAl, less than or equal to 0.03 percent of Ti, less than or equal to 0.005 percent of N, and Fe and unavoidable impurities accounting for the margin. The production process adopts the steps of steelmaking with molten iron->continuous casting-hot rolling->push-pull mode pickling->HC rolling mill cold rolling->electrolytic degreasing->hydrogen bell furnace annealing(BA)->double-machine leveling->electrolytic tinning, and finally the hard tinned plate can be obtained. The hard tinned plate of the invention has the advantages of low cost, high hardness, favorable stamping processability, and the like, and can be widely used as packing materials for food, drinks, etc.

The invention discloses a single-steel multi-stage hot-rolled complex-phase high-strength steel plate and a production method thereof. The production method comprises the steps of heating, hot rolling, cooling, coiling, annealing and acid pickling. The steel plate comprises, by weight percentage, 0.08-0.15% of C, 1.80-3.00% of Mn, less than or equal to 0.015% of S, less than or equal to 0.025% of P, 0.50-1.00% of Si, 0.020-0.060% of Als, 0.40-1.0% of Cr, 0.010-0.040% of Ti, 0.10-0.30% of Mo, less than or equal to 0.007% of N, and the balance Fe and inevitable impurities. According to the production method, a composition system is adopted through a reasonable composition design, complex-phase steel with different strength levels is produced by controlling different structure types in the hot rolling and annealing processes, and therefore the special requirement that a steel enterprise can meet the different performance of users by adopting one composition system can be met, the mechanical property of the whole-coil product is uniform, the baking hardening performance is good, and the requirements of the users for small-batch and different-strength-level samples can be met.

The invention relates to transparent microcrystalline glaze, a wear-resistant transparent glaze, a transparent microcrystalline wear-resistant full-polished glaze ceramic tile and a preparation method. The transparent microcrystalline glaze comprises the following components in parts by weight: 5 parts of barium carbonate; 18 parts of potassium feldspar; 9 parts of albite; 8 parts of aluminum oxide; 16 parts of calcite; 4 parts of quartz powder; 6 parts of dolomite; 10 parts of kaolin; 12 parts of calcined kaolin; 5 parts of wollastonite; 1 part of calcium fluoride; 1 part of titanium dioxide.The preparation method of the transparent microcrystalline wear-resistant full-polished glazed ceramic tile comprises the following steps: (1) pressing a green body; (2) applying / not applying groundcoat; (3) drying or not drying a glaze line; (4) carrying out comprehensive combined decoration including planographic printing, rubber roller printing, ink jet printing and the like; (5) drying or not drying a glaze line; (6) applying transparent microcrystalline glaze; (7) pouring / spraying wear-resistant transparent glaze; (8) performing firing in a kiln; and (9) conducting glaze polishing.

The invention relates to a method for preparing warm composite woven fabric. The warm composite woven fabric is prepared by interweaving a group of warp yarns (1) and three groups of filling yarns in an overlapped way, wherein the three groups of filling yarns are respectively face weft (2), intermediate weft (2') and back weft (2''), the face weft (2), the intermediate weft (2') and the back weft (2'') are arranged according to the proportion of 1:1:1, the warp yarn (1) and the face weft (2) are woven into satin weave which has 8 lines and 5 step weft faces and serves as a surface layer according to a mode of an upper needle and seven lower needles and 5 weft step numbers, the warp yarn (1) and the back weft (2'') are woven into satin weave which has 8 lines and 5 step weft faces and serves as a lining according to a mode of an upper needle and seven lower needles and 5 weft step numbers, the warp yarn (1) and the intermediate weft (2') take honeycomb weave as an intermediate layer in terms of Rj equal to Rw and equal to 8, and the Rj and the Rw are respectively the circulated yarn numbers of warp weave and weft weave. The warm composite woven fabric prepared by the method integrates the characteristics of light weight, super warm property, softness, comfortableness, moisture absorption, air permeability, bacterial resistance and bacterial restraint, and the production is simple and easy to implement.

The invention discloses a corrosion-resistant soft cold-rolling tin plate and a production method thereof. The corrosion-resistant soft cold-rolling tin plate comprises the following chemical components by weight percent: 0.01%-0.04% of C, less than or equal to 0.02% of Si, 0.10%-0.40% of Mn, less than or equal to 0.01% of P, less than or equal to 0.012% of S, less than or equal to 0.011% of Sn, less than or equal to 0.01% of As, 0.005%-0.050% of solAl, less than or equal to 0.004% of N and the balancing of Fe and unavoidable impurities. The production method comprises the steps of hot-metal desulphurization, dephosphorization, converter melting, RH (Ruhrstahl-Heraes) vacuum treatment, continuous casting, continuous hot-rolling, pickling, cold-rolling, electrolytic degreasing, full-hydrogen furnace bell-type annealing (BA), leveling and electrotinning and the like. According to the practice, the uncoated tin plate base of the invention has the advantages of low hardness value and high corrosion resistance at the same time; since the production method thereof is based on the bell-type annealing manner, the production method of the invention has the advantages of low difficulty level of production control, low cost and easy implementation in large-scale production and helps users reduce the cost.

The invention discloses a method for producing high-hole-expansion-rate steel 420L for an automotive frame. The method includes the steel-making step and the hot rolling step; the steel-making step is characterized in that produced molten steel comprises, by weight, 0.06%-0.08% of C, 1.10%-1.20% of Mn, not larger than 0.008% of S, not larger than 0.020% of P, not larger than 0.10% of Si, 0.015%-0.035% of Als, not larger than 0.0050% of N and the balanced iron and inevitable impurities; and the hot rolling step includes the heating working procedure, the rolling working procedure and the cooling working procedure. The cooling working procedure includes the steps that strip steel enters a first set laminar cooling area at the temperature of 835+ / -15 DEG C, and the strip steel is rapidly cooled at the speed ranging from 50 DEG C / s to 80 DEG C / s to the temperature of 690+ / -20 DEG C; then air cooling within the temperature range is carried out for 2.3 s to 2.8 s; and finally the strip steel enters a second set laminar cooling area, and is cooled at the speed ranging from 20 DEG C / s to 40 DEG C / s to the coiling temperature of 460+ / -20 DEG C. By means of the method, ingredient elements such as the C, the Mn and the Si are adopted, the steel 420L for the automotive frame in needed thickness and specification is produced through the subsection cooling process, and the metallographic structure of the 420L is shown in an attached map; and the development requirement for high-molding performance is met, a small alloy adding amount is added, and a huge economic benefit can be generated.

The invention discloses thick X42 pipeline steel and a production method thereof, and particularly relates to thick X42 pipeline steel and a production method thereof which are applied to the field of production of hot-continuous-rolled steel strips. The thick X42 pipeline steel low in production cost comprises, by weight, 0.03%-0.07% of C, 0.10%-0.30% of Si, 0.70%-1.00% of Mn, 0-0.020% of P, 0-0.010% of S, 0.015%-0.030% of Nb, 0.008%-0.019% of Ti, 0.15%-0.30% of Cr, and the balance Fe and inevitable impurities. The invention further provides the production method of the thick X42 pipeline steel. The production method of the thick X42 pipeline steel comprises the following steps of smelting and continuous casting, rough rolling, finish rolling, and double-section cooling. According to the thick X42 pipeline steel and the production method thereof, the production cost is relatively low, and the control difficulty is low.

The invention relates to a production method of an anti-aging tinning black plate with hardness HR30Tm of 55+ / -4 and discloses a production method of an anti-aging tinning black plate. The method comprises the following steps: smelting: adopting KR desulfurization, smelting in a converter, RH vacuum treatment and continuous casting; hot rolling: carrying out the hot rolling of a continuous casting blank comprising the following chemical components in percentage by weight: C: 0.02-0.06, Si: smaller than or equal to 0.025, Mn: smaller than or equal to 0.50, P: smaller than or equal to 0.020, S:smaller than or equal to 0.030, Als: 0.005-0.040, Ti: 0.005-0.020, N: smaller than or equal to 0.005, the balance of Fe and inevitable impurities; and carrying out pickling, cold rolling, electrolytic degreasing, full-hydrogen bell furnace annealing and leveling of a tinning black plate with hardness HR30Tm of 51-59. The invention has the advantages of small production control difficulty and low cost and hardness value, is beneficial for users to use the anti-aging tinning black plate to manufacture deep drawing cans and can lids with complicated deformation, lessens the canning defects of cracks, crazing slip lines or corded bent surfaces, and the like and improves the canning yield rate and the canning qualified rate.

The invention discloses thick-specification X65 pipeline steel and a production method thereof, and particularly relates to the thick-specification X65 pipeline steel and the production method thereof in the field of steel band production. The invention provides the thick-specification X65 pipeline steel with the advantages that the process is simple; the qualification rate is high. The weight percentage of chemical ingredients is shown as follows: C accounts for 0.03 to 0.06 percent; Si accounts for 0.10 to 0.30 percent; Mn accounts for 1.40 to 1.60 percent; the content of P is at most 0.020 percent; the content of S is at most 0.010 percent; Nb accounts for 0.030 to 0.039 percent; V accounts for 0.06 to 0.08 percent; Ti accounts for 0.008 to 0.019 percent; Cr accounts for 0.15 to 0.30 percent; the rest is Fe and unavoidable impurities. The invention also provides the production method of the thick-specification X65 pipeline steel with high qualification rate. The method comprises the following steps of melting and coarse milling, fine milling and cooling. The production method has the advantages of low production cost and high production efficiency.

The invention discloses 530 MPa-grade thin galvanized band steel and a production method thereof. The 530 MPa-grade thin galvanized band steel comprises, by weight, 0.08-0.12% of C, 0-0.06% of Si, 1.1-1.5% of Mn, 0-0.016% of P, 0-0.008% of S, 0.040-0.055% of Nb, 0.020-0.045% of Als, 0-0.007% of N, 0.015-0.030% of Ti, 0.0015-0.0045% of Ca, and the balance Fe. Converter and LF refining is conducted in a low nitrogen mode, LF refining, the acid-soluble aluminum content before LF refining calcium treatment is 0.025-0.045%, molten steel is clearly blown by bottom blowing argon after calcium treatment for 6-15 min, and refining is completed; and when refining is finished, the acid-insoluble aluminum content is less than or equal to 0.004 wt%, the ratio of the acid-insoluble aluminum content to the calcium content is less than or equal to 2.5, and in order to reach the ratio, calcium treatment is conducted. The 530 MPa-grade thin galvanized band steel meets the requirements of the surface quality level FB in GB2518 and EN10346.

The invention discloses a manufacturing method of an automobile decoration aluminum alloy belt material and relates to a manufacturing method of the aluminum alloy belt material. The invention aims atsolving the problem that an automobile decoration aluminum alloy belt material prepared by an existing method has punching cracks and a high surface roughness. The manufacturing method comprises thesteps: 1, preparing raw materials; 2, casting; 3, heating; 4, hot rolling; 5, cold rolling; 6, annealing to obtain the automobile decoration aluminum alloy belt material. The automobile decoration aluminum alloy belt material has the advantages: the tensile strength is 150 to 158 N / mm<2>, the yield strength is 115 to 124 N / mm<2>, the elongation percentage is 10.8 to 15.4%, and the polished surfaceroughness Ra is smaller than or equal to 0.1 mu. The manufacturing method disclosed by the invention is mainly applied to preparing the automobile decoration aluminum alloy belt material.

The invention discloses a production method for a cold rolling dual-phase steel base plate. The production method includes the steel-making and casting step, the heating step, the hot rolling step and the cooling step. The cooling step is in a three-section cooling manner, wherein strip steel is firstly subject to first-time forced cooling and is cooled to 700 DEG C to 740 DEG C; then air cooling is carried out for 1.5 s to 3 s within the temperature range; and the strip steel obtained after air cooling is subject to second-time forced cooling to 620 DEG C to 690 DEG C for reeling, U-shaped control is adopted for reeling, in other words, the temperature used when 20 m to 30 m of the strip steel from the head is reeled is 10 DEG C to 30 DEG C higher than the temperature used when the middle portion of the strip steel is reeled, and the temperature used when 40 m to 80 m of the strip steel to the tail is reeled is 20 DEG C to 40 DEG C higher than the temperature used when the middle portion of the strip steel is reeled. According to the method, at the temperature close to the austenite transformation Curie temperature, the slow cooling process is adopted, ferritic structures are homogenized, and the precipitation proportion of pearlites is controlled; compared with a conventional production process, the uniformity of the structures and the performance is facilitated; and through mechanics property analysis in the hot rolling pass length direction, the strength property fluctuation is smaller than 20 MPa, and the products meet the using requirements of a next working procedure.

The invention relates to a high strength tin plate and a production method thereof. The high strength tin plate is characterized by comprising the following components in mass percentage: 0.0040-0.0055% of C, 0.5-0.7% of Mn, 0.04-0.08% of Al, less than or equal to 0 .025% of Si, 0 .025-0 .03% of Ti, less than or equal to 0.015% of P, less than or equal to 0 .025% of S, less than or equal to 0.003% of N, and the balance of Fe and inevitable impurity elements; the processing technology comprises the following steps: steelmaking, continuous casting, hot rolling, acid rolling, annealing, leveling and tinning, wherein the hot rolling temperature is 1500 DEG C, the finishing temperature of hot rolling is 1000 DEG C, and the annealing temperature is 800 DEG C. The rigid tin plate prepared by adopting the technical scheme is higher in hardness, can meet various requirements in the market, and has a wide application range.

The invention belongs to the technical field of material preparation, and discloses a lightweight high-strength hard alloy material and a preparation method thereof. The lightweight high-strength hard alloy material is prepared from the components in parts by mass: 6-8 parts of titanium, 1-2 parts of carbon, 3-6 parts of zirconium, 2-5 parts of silicon, 1-4 parts of copper, 2-3 parts of nickel, 2-3 parts of manganese, 1-2 parts of iron, 1-2 parts of niobium and 1-3 parts of chromium. The lightweight high-strength hard alloy material provided by the invention is reasonable in raw material ratio, and has the advantages of low production control difficulty and low production cost, and is beneficial to reducing the material preparation cost; in the preparation of the lightweight high-strength hard alloy material, carbon is one of effective strengthening elements for ensuring that the alloy material obtains high strength and high hardness, the strength and the hardness of steel can be remarkably improved, ferrite can be prevented from appearing in a quenching structure, and the produced high-strength alloy is high in hardness, light in weight and capable of meeting the diversified requirements of the market.

The invention relates to the field of copper alloy and application thereof, in particular to a high-strength high-conductivity copper chromium zirconium alloy and a low-temperature deforming preparingmethod thereof. The alloy comprises chemical components including, by mass percent, 0.2 to 1.5% of chromium, 0.05 to 0.2% of zirconium and the balance copper and inevitable impurities. The typical structure of the alloy comprises a copper matrix of a nanoscale deformation structure and dispersed distribution chromium particles, the typical nanostructure is a deformation twin crystal bundle, the twin crystal layer piece thickness ranges from 20 to 100 nanometers, the twin crystal bundle size ranges from several microns to several hundred microns, and the diameter of the dispersed distributionchromium particles ranges from 10 to 100 nanometers. The alloy has the 700 MPa stage strength, and meanwhile, the conductivity is within the 78 to 82% IACS range. The manufacturing method of the alloycomprises the steps of alloy blank casting heat machining and low-temperature deforming. The alloy has the advantages of being high in strength, high in conductivity, high in softening temperature, excellent in wear resisting and welding property and the like and can be suitable for the field of use of existing copper chromium zirconium alloy and the field with the higher requirement for strength-conductivity.

The invention relates to a high-strength tinned plate. The high-strength tinned plate is characterized by being composed of, by weight, 0.0045-0.0055% of carbon, 0.6-0.7% of manganese, 0.05-0.08% of aluminium, smaller than or equal to 0.025% of silicon, 0.025-0.03% of titanium, smaller than or equal to 0.015% of phosphorus, smaller than or equal to 0.025% of sulfur, smaller than or equal to 0.003% of nitrogen, and the balance iron and inevitable impurity elements. The hard tinned plate obtained by the technical scheme is relatively high in hardness, can meet various market requirements, and can be widely applied.

The invention discloses a high-strength anti-aging single-component modified sealant for bonding rubber and plastic composite materials and a preparation method thereof, and relates to the technical field of high-molecular bonding material sealants, the high-strength anti-aging single-component modified sealant is composed of the following raw materials: a silane-terminated polyether polyurethane polymer, a silane modified acrylate polymer, a first plasticizer, a water removal agent, a bonding accelerator, a filler and the like, the high-strength anti-aging single-component modified sealant for bonding the rubber and plastic composite materials has excellent bonding adaptability, and has good bonding property on low-surface-energy base materials such as the rubber and plastic composite materials; the product provided by the invention has very good strength performance, the shear strength can reach about 5 MPa, the tensile strength can reach about 7 MPa, the notch tear strength can reach more than 28 N / mm, and the elongation at break can reach more than 600%, which reach and even exceed the performance index of polyurethane automobile windshield glass glue.

The invention provides an insulation foam material foaming system comprising a plurality of material storage tanks. Cleaning and warming boxes are connected to liquid outlets of the material storage tanks through liquid conveying pipes. Filter screen plates are arranged in the middles of the cleaning and warming boxes. Liquid distribution plates are arranged on the filter screen plates. Vertically-through through holes are formed in the liquid distribution plates. Electric heating wires are further arranged in the liquid distribution plates. Obliquely arranged first liquid guide plates are arranged below the filter screen plates. Liquid discharge outlets are formed in the bottoms of the cleaning and warming boxes. Liquid filtered by the filter screen plates is guided to the liquid discharge outlets through the first liquid guide plates. The liquid conveying pipes are connected to the liquid discharge outlets. Liquid mixing pipes are connected to the liquid conveying pipes. The filter and heating devices are added to the insulation foam material foaming system, the reaction temperature needed by raw materials is ensured, the advantages that stability is good, and environmental influencing factors are controlled are achieved, production control difficulty is lowered, and product quality is improved.

The technology provides a labyrinth seal structure of a powder concentrator, which is better in sealing effect. A vent pipe is arranged on an upper housing of the powder concentrator; and one end of the vent pipe is communicated with the outside of the upper housing, and the other end of the vent pipe is communicated with a sealing clearance between a rotor and a stator of the powder concentrator.

The invention relates to the technical field of alloy steel production, in particular to a wear-resisting alloy steel liner plate which comprises the following chemical elements in percentage by weight: 0.3%-0.5% of C, 0.6%-0.8% of P, 0.5%-0.7% of Mn, 1.8%-2.0% of Cr, 0.03%-0.05% of S, 0.1%-0.2% of Mo, 0.8%-1.2% of V, 0.07%-0.1% of W and the balance Fe. Contents of Mn and Mo are lower, so that thecost is reduced; the wear-resisting alloy steel liner plate is subjected to thermal treatment at 950 DEG C, the production control difficulty is lowered and the cost is low; and the wear-resisting alloy steel liner plate provided by the invention is high in strength and impact toughness and low in production control difficulty and cost and facilitates large-scale application and popularization.

The invention discloses 480MPa-grade galvanized strip steel. The 480MPa-grade galvanized strip steel comprises, by mass, 0.05-0.09% of C, 0.05% or less of Si, 0.8-1.0% of Mn, 0.016% or less of P, 0.008% or less of S, 0.015-0.035% of Nb, 0.020-0.045% of Als, 0.007% or less of N, 0.015-0.035% of Ti, 0.0015-0.0030% of Ca, and the balance Fe. A production method comprises the steps that converter smelting and LF refining are conducted in a low-nitrogen mode; protective continuous casting is conducted, and nitrogen is controlled to be increased; and calcium treatment is conducted after refining is completed, wherein the mass percent of acid-insoluble aluminum in molten steel is smaller than or equal to 45 ppm, the ratio of the mass percent of the acid-insoluble aluminum to that of calcium is 0.5-1.5, and the ratio of the mass percent of the acid-insoluble aluminum to that of acid soluble aluminum is 0.05-0.20. According to the 480MPa-grade galvanized strip steel, the production cost is low, the overall mechanical performance of the product is superior, and the surface quality meets the requirements of FB surface levels in GB2518 and EN10346.

The invention discloses a manufacturing method of an automobile decoration aluminum alloy belt material and relates to a manufacturing method of the aluminum alloy belt material. The invention aims atsolving the problem that an automobile decoration aluminum alloy belt material prepared by an existing method has punching cracks and a high surface roughness. The manufacturing method comprises thesteps: 1, preparing raw materials; 2, casting; 3, heating; 4, hot rolling; 5, cold rolling; 6, annealing to obtain the automobile decoration aluminum alloy belt material. The automobile decoration aluminum alloy belt material has the advantages: the tensile strength is 150 to 158 N / mm<2>, the yield strength is 115 to 124 N / mm<2>, the elongation percentage is 10.8 to 15.4%, and the polished surfaceroughness Ra is smaller than or equal to 0.1 mu. The manufacturing method disclosed by the invention is mainly applied to preparing the automobile decoration aluminum alloy belt material.

The invention provides a hot-rolled pickling steel strip for 450MPa grade oil well pipes and its manufacturing method. Through the design of reasonable smelting, continuous casting, hot rolling and pickling processes, three acid pickling strips are designed based on the continuous pickling production unit. The temperature of the acid solution in the tank is uniform, adopting the process of pickling first and then smoothing, the pickling speed can be controlled in a large range, and the production efficiency is high, which can reduce the production preparation time and reduce the difficulty of production control, and the produced tissue is ferrite +Pearlite, hot-rolled pickled steel strip for tubing with stable coil performance and good formability.

The invention relates to the field of copper alloy and application thereof, in particular to a high-strength high-conductivity copper chromium zirconium alloy and a low-temperature deforming preparingmethod thereof. The alloy comprises chemical components including, by mass percent, 0.2 to 1.5% of chromium, 0.05 to 0.2% of zirconium and the balance copper and inevitable impurities. The typical structure of the alloy comprises a copper matrix of a nanoscale deformation structure and dispersed distribution chromium particles, the typical nanostructure is a deformation twin crystal bundle, the twin crystal layer piece thickness ranges from 20 to 100 nanometers, the twin crystal bundle size ranges from several microns to several hundred microns, and the diameter of the dispersed distributionchromium particles ranges from 10 to 100 nanometers. The alloy has the 700 MPa stage strength, and meanwhile, the conductivity is within the 78 to 82% IACS range. The manufacturing method of the alloycomprises the steps of alloy blank casting heat machining and low-temperature deforming. The alloy has the advantages of being high in strength, high in conductivity, high in softening temperature, excellent in wear resisting and welding property and the like and can be suitable for the field of use of existing copper chromium zirconium alloy and the field with the higher requirement for strength-conductivity.

The invention relates to a method for preparing warm composite woven fabric. The warm composite woven fabric is prepared by interweaving a group of warp yarns (1) and three groups of filling yarns in an overlapped way, wherein the three groups of filling yarns are respectively face weft (2), intermediate weft (2') and back weft (2''), the face weft (2), the intermediate weft (2') and the back weft (2'') are arranged according to the proportion of 1:1:1, the warp yarn (1) and the face weft (2) are woven into satin weave which has 8 lines and 5 step weft faces and serves as a surface layer according to a mode of an upper needle and seven lower needles and 5 weft step numbers, the warp yarn (1) and the back weft (2'') are woven into satin weave which has 8 lines and 5 step weft faces and serves as a lining according to a mode of an upper needle and seven lower needles and 5 weft step numbers, the warp yarn (1) and the intermediate weft (2') take honeycomb weave as an intermediate layer in terms of Rj equal to Rw and equal to 8, and the Rj and the Rw are respectively the circulated yarn numbers of warp weave and weft weave. The warm composite woven fabric prepared by the method integrates the characteristics of light weight, super warm property, softness, comfortableness, moisture absorption, air permeability, bacterial resistance and bacterial restraint, and the production is simple and easy to implement.

The invention relates to a processing method of an aluminum alloy strip which adopts the end face to wrap the aluminum foil to restrain the surface color difference of the side edge, and the invention relates to a processing method of the aluminum alloy strip. The invention aims to solve the problem of chromatic aberration on the side surface of the aluminum alloy strip obtained by the existing preparation process. Place the aluminum alloy billet in a cold rolling mill for rolling, and let it stand for 20 to 28 hours after rolling to obtain a semi-finished strip coil; wrap the two end faces of the semi-finished strip coil with aluminum foil respectively and bundle them, and then transfer to the return process. Annealing is carried out in the furnace; after annealing, the aluminum foils on the two end faces of the semi-finished strip coil are removed, and then the semi-finished strip coil is transferred to a cold rolling mill for secondary cold rolling to the thickness of the finished product to obtain the finished strip; the finished strip is drawn The bending straightener is straightened, and the final cut is completed. The invention can suppress the burning of the rolling oil and avoid the generation of chromatic aberration. The invention is suitable for the processing of aluminum alloy strips.

The invention discloses a hard tin-plated substrate for a bottle cap and a production method thereof. The substrate comprises, by weight percentage, 0.06-0.10% of carbon, 0.30-0.60% of manganese, 0.02-0.08% of aluminum, less than 0.03% of silicon, less than 0.005% of nitrogen, less than 0.02% of sulfur, less than 0.02% of phosphorus, and the balance ferrum and other inevitable impurities. The production method comprises the following steps of smelting, refining, continuous casting, hot rolling, acid pickling, one-time cold rolling, annealing, secondary cold rolling and finishing. According tothe hard tin-plated substrate and the production method, the appropriate components are designed, the process of annealing and secondary cold rolling is designed, so that the secondary cold-rolled tin-plated substrate which has relatively high hardness and relatively good elongation is produced; and the hard tin-plated substrate is low in production control difficulty, low in cost, stable in performance and suitable for producing a crown cover, a rotary opening cover and the like.

The invention discloses a production method for a cold rolling dual-phase steel base plate. The production method includes the steel-making and casting step, the heating step, the hot rolling step and the cooling step. The cooling step is in a three-section cooling manner, wherein strip steel is firstly subject to first-time forced cooling and is cooled to 700 DEG C to 740 DEG C; then air cooling is carried out for 1.5 s to 3 s within the temperature range; and the strip steel obtained after air cooling is subject to second-time forced cooling to 620 DEG C to 690 DEG C for reeling, U-shaped control is adopted for reeling, in other words, the temperature used when 20 m to 30 m of the strip steel from the head is reeled is 10 DEG C to 30 DEG C higher than the temperature used when the middle portion of the strip steel is reeled, and the temperature used when 40 m to 80 m of the strip steel to the tail is reeled is 20 DEG C to 40 DEG C higher than the temperature used when the middle portion of the strip steel is reeled. According to the method, at the temperature close to the austenite transformation Curie temperature, the slow cooling process is adopted, ferritic structures are homogenized, and the precipitation proportion of pearlites is controlled; compared with a conventional production process, the uniformity of the structures and the performance is facilitated; and through mechanics property analysis in the hot rolling pass length direction, the strength property fluctuation is smaller than 20 MPa, and the products meet the using requirements of a next working procedure.

The invention discloses a single-steel multi-stage hot-rolled complex-phase high-strength steel plate and a production method thereof. The production method comprises the steps of heating, hot rolling, cooling, coiling, annealing and acid pickling. The steel plate comprises, by weight percentage, 0.08-0.15% of C, 1.80-3.00% of Mn, less than or equal to 0.015% of S, less than or equal to 0.025% of P, 0.50-1.00% of Si, 0.020-0.060% of Als, 0.40-1.0% of Cr, 0.010-0.040% of Ti, 0.10-0.30% of Mo, less than or equal to 0.007% of N, and the balance Fe and inevitable impurities. According to the production method, a composition system is adopted through a reasonable composition design, complex-phase steel with different strength levels is produced by controlling different structure types in the hot rolling and annealing processes, and therefore the special requirement that a steel enterprise can meet the different performance of users by adopting one composition system can be met, the mechanical property of the whole-coil product is uniform, the baking hardening performance is good, and the requirements of the users for small-batch and different-strength-level samples can be met.