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

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 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 highcorrosion 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 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 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.