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857 results about "Thin slab" patented technology

Non-oriented electrical steel for thin slab continuous casting-continuous rolling production and method thereof

InactiveCN102134675AReduce SiReduce Mn contentMetal rolling arrangementsTunnel kilnChemical composition
The invention relates to non-oriented electrical steel and a production method thereof. The non-oriented electrical steel comprises the following chemical compositions in percentage by weight: less than or equal to 0.008 percent of C, 0.15 to 2.2 percent of Si, less than or equal to 0.008 percent of Al, 0.15 to 1.5 percent of Mn, 0.004 to 0.15 percent of P, less than or equal to 0.008 percent of S, less than or equal to 40PPm of [O], less than or equal to 0.005 percent of N, less than or equal to 0.008 percent of Ti, and the balance of iron and inevitable impurities. The production method comprises the following steps of: smelting by using a converter and performing vacuum treatment; continuously casting into slabs with the thickness of 50-90 millimeters; soaking in a tunnel kiln; continuously rolling by using seven mills; coiling; performing pickling; performing cold rolling; performing recrystallization annealing; and obtaining the steel for later use. The alloy is reasonable in design and is not needed to be subjected to calcium treatment; the procedures are simple; the cost is reduced; the defect of low casting property in thin slab continuous casting-continuous rolling production can be effectively overcome; the advantages on cost and magnetic property of the non-oriented electrical steel in the thin slab continuous casting-continuous rolling production are fully shown, and the market competitiveness of the product is greatly improved.
Owner:武汉钢铁有限公司

Steel plate and method thereof used for producing water heater linear enamel by flexible thin slab rolling line

ActiveCN102181805AStable recoveryExcellent anti-scale explosion performanceRoll mill control devicesMetal rolling arrangementsThin slabManganese
The invention relates to a steel plate and a process method thereof used for producing water heater linear enamel by a flexible thin slab rolling line (FTSR), belonging to the production field of enamel steel plates. The steel plate comprises the following chemical components in percentage by weight: 0.03-0.10wt% of carbon, 0.15-0.40wt% of manganese, less than or equal to 0.06wt% of silicon, 0.004-0.040wt% of sulphur, less than or equal to 0.15wt% of phosphorus, 0.03-0.05wt% of aluminum, 0.002-0.008wt% of nitrogen, 0.02-0.10wt% of titanium and the balance of ferrum and inevitable impurities. The tissue of the water heater linear enamel contains fine grain ferrite and a small quantity of pearlite tissues, and the granularity level of the water heater linear enamel is more than or equal to 10 levels. According to reasonable ingredient design and the FTSR process, steel for manufacturing water-storage water heater linear enamel for home appliances is produced; the steel plate has good enamel adhesion and scaling resistance, and also has the characteristics of few added alloy elements, few production working procedures, low production cost and the like; and a hot rolling scouring plate is used for replacing a cold rolling annealing plate.
Owner:HEBEI IRON AND STEEL

Manufacturing method for thin-specification hot-rolled strip steel

The invention discloses a manufacturing method for thin-specification hot-rolled strip steel. The manufacturing method is characterized in that a single-machine uniflow thin slab continuous casting machine is directly connected with a rolling mill. The manufacturing method comprises the steps of steel-making, continuous casting, swing type shearing, steel pushing, descaling, side heating, unit rough rolling, fly shearing, coreless coiling, induction heating, descaling, unit finish rolling, strip steel cooling, shearing, coiling, coil discharging, bundling, coil transporting, weighing and marking, transporting and storing. The manufacturing method adopts an endless rolling process or a single-billet rolling process. A temperature of casting billet at an outlet of the continuous casting machine is higher than that of an ESP production line by 100-150 DEG C, so that a utilization rate of waste heat of continuously cast billet is increased, and energy consumption is reduced; compared with the ESP production line, the manufacturing method has the advantages that: swing type shears and a steel pushing roller way are migrated to the front of a roughing mill, so that distances from the swing type shears and the steel pushing roller way to a middle roller way are shortened after rough milling, temperature drop of intermediate billets is reduced, induction heat compensation amount is reduced, and a roll of the roughing mill can be prevented from generating thermal cracks. A descaling device is arranged at an inlet of the roughing mill, and a finish rolling unit adopts an online heating preparation technology and an online quick roll-changing technology, so that surface quality of products is effectively improved.
Owner:NORTHEASTERN UNIV

Multifunctional substrate polishing and burnishing device and polishing and burnishing method thereof

The invention discloses a multifunctional substrate polishing and burnishing device and a polishing and burnishing method thereof, which belong to the technical field of ultraprecision machining of a planar substrate and relate to polishing and burnishing leveled machining and thinning machining of hard and crisp materials, such as silicon wafers, sapphire substrates and glass base plates. The multifunctional substrate polishing and burnishing device and the polishing and burnishing method thereof can be used for polishing and burnishing planar thin plates, such as ceramics, metal and composite materials. The substrate polishing and burnishing method comprises three modes of axial cut-in polishing and burnishing, radial cut-in polishing and burnishing and margin-leaving polishing and burnishing. The polishing and burnishing device adopts a double-spindle structure composed of a spindle polishing unit and a spindle burnishing unit; the substrate is polished and burnished on one device; the spindle polishing unit and the spindle burnishing unit are dragged by one traction rope and are in mutual counter weight; the polishing and burnishing device integrates a polishing machine and a burnishing machine; two working procedures of burnishing and polishing can be finished only by one-time clamping of the substrate, the polishing and burnishing machining precision and the polishing and burnishing machining automation of the substrate are improved, a fragment rate is lowered, and the production efficiency is improved.
Owner:宁波知行半导体有限公司

1180MPa-grade high-plasticity bainite complex phase steel plate for automobile and preparation method for 1180MPa-grade high-plasticity bainite complex phase steel plate

ActiveCN110724877ALow costReduce C contentSteel platesThin slab
The invention belongs to the field of manufacturing of steel for automobiles and particularly relates to a 1180MPa-grade high-plasticity bainite complex phase steel plate for an automobile and a preparation method for the 1180MPa-grade high-plasticity bainite complex phase steel plate. The 1180MPa-grade high-plasticity bainite complex phase steel plate is prepared from the following components inpercentage by weight: 0.03-0.20 percent of C, 0.05-1.50 percent of Si, 0.5-2.5 percent of Mn, smaller than or equal to 0.05 percent of P, smaller than or equal to 0.05 percent of S, 0.01-0.04 percentof Nb, 0.01-0.04 percent of Ti, 0.01-0.15 percent of V, 0. 015-1.50 percent of Al, substitutable components, including 0-2.0 percent of Cr, 0-0.5 percent of Mo and 0.05-0.50 percent of Cu, and the balance of Fe and inevitable impurities. The preparation method comprises the following steps of converter smelting, continuous casting of a medium-thin slab, hot continuous rolling, acid pickling cold rolling and continuous annealing. For the 1180MPa-grade high-plasticity bainite complex phase steel plate for the automobile and the preparation method disclosed by the invention, the chemical components of the steel take the C, the Si and the Mn as main elements, the content of the C is smaller than 0.25, and the alloy cost is lowered; by adopting the production process of converter smelting, continuous casting and continuous rolling of the medium-thin slab, acid pickling cold rolling and continuous annealing, the production process is simplified, the cost is low, new production equipment doesnot need to be added, and the production process is stable; and the obtained material has the force and energy characteristics of high yield, high tensile strength and high extension.
Owner:ANGANG STEEL CO LTD

Testing device for current auxiliary type micro-stretching mechanical property of metal thin plate

The invention provides a testing device for a current auxiliary type micro-stretching mechanical property of a metal thin plate and relates to a mechanical property testing device. As no relative information can be referred at home and abroad at present, the problems of electrification and insulation of a micro-stretching clamp, a clamping form of a micro-test sample, control and acquisition of the temperature of the test sample, and current parameter acquisition are required to be solved. A force sensor is mounted at the lower part of a movable transverse beam of an all-purpose material testing machine; two sets of clamp bodies are symmetrically mounted on the all-purpose material testing machine; a micro-stretching test sample is mounted between the two sets of clamp bodies; the two ends of a pulse power supply are connected with the two sets of clamp bodies by purple copper electrodes; a digital storage type oscilloscope is connected with the pulse power supply through a Hall current probe; a loop is formed by the pulse power supply, the two purple copper electrodes, the two sets of clamp bodies and the micro-stretching test sample; and a thermal infrared imager and an industrial air blower are mounted on the two sides of the all-purpose material testing machine by brackets. The testing device is used for current auxiliary type micro-stretching mechanical property testing.
Owner:HARBIN INST OF TECH

Folding-type microchannel porous flat pipe and molding method thereof

The invention discloses a folding-type microchannel porous flat pipe and a molding method thereof. The flat pipe is formed by subjecting a single thin slab to integral molding, and the single thin slab is sequentially advanced by a mechanical bending mechanism in a multi-point molding control manner, wherein two ends of the single thin slab are respectively bent circuitously, then the circuitously bent parts are vertically bent twice and then horizontally turned and folded once and are butt-jointed at a mesal position of the single thin slab for integral molding, and thus, a porous flat pipe with mutually spaced fine pores is further formed. Compared with the prior art, the invention has the beneficial effects that: 1, the structural form of the flat pipe disclosed by the invention is suitable to being used in a light-weight heat exchanger with light weight and high heat conductivity; 2, the advantages of compact entire structure, high heat exchange efficiency, light weight, firmness, durability, and operation safety and reliability are achieved; 3, by adopting the integral folding and molding structure, the energy consumption of a product production process is low, and the pressure resistance of products is good; and 4, the effect of producing and yield can be achieved through mechanical control, the inventory level is greatly reduced, the product turnover efficiency is increased, and the requirement on lean production can be met.
Owner:YANGJIANG BAOMALI AUTO AIR CONDITIONER
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