857 results about "Thin slab" patented technology

Thin semiconductor foils can be formed using light reactive deposition. These foils can have an average thickness of less than 100 microns. In some embodiments, the semiconductor foils can have a large surface area, such as greater than about 900 square centimeters. The foil can be free standing or releasably held on one surface. The semiconductor foil can comprise elemental silicon, elemental germanium, silicon carbide, doped forms thereof, alloys thereof or mixtures thereof. The foils can be formed using a release layer that can release the foil after its deposition. The foils can be patterned, cut and processed in other ways for the formation of devices. Suitable devices that can be formed form the foils include, for example, photovoltaic modules and display control circuits.

An orthodontic appliance anchored to the bone of the patient's mouth, the appliance having a wire guide for use with orthodontic tension bands to alleviate the use of other teeth as anchors. The device and method utilize a thin plate anchor body having at least one aperture, a bone fastener receivable through the anchor body aperture, and a tension band and/or wire guide channel affixed to the anchor plate body.

A head suspension includes a load beam to apply load onto a head that writes and reads information to and from the hard disk and a flexure attached to the load beam and supporting the head. The flexure has write wires and read wires connected to the head. The flexure includes a substrate made of a conductive thin plate, a base insulating layer made of flexible resin and formed on the substrate, and the wires are arranged on the base insulating film. A ground layer is formed at least partly between the substrate and the base insulating layer. The ground layer only corresponds to the write wires in a width direction of the flexure. The conductivity of the ground layer is higher than that of the substrate that is made of a conductive thin plate.

A composition and method of making a high-strength low-alloy hot-rolled steel sheet, strip, or plate bearing titanium as the principal or only microalloy strengthening element. The steel is substantially ferritic and has a microstructure that is at least 20% acicular ferrite. The steel has a minimum yield strength of at least 345 MPa (50 ksi) and even over 621 MPa (90 ksi) adding titanium as the lone microalloy element for strengthening, with elongation of 15% and more. Addition of vanadium, niobium, or a combination thereof can result in yield strengths exceeding 621 MPa (90 ksi). Effective titanium content, being the content of titanium in the steel not in the form of nitrides, oxides, or sulfides, is in the range of 0.01 to 0.12% by weight. The manufacturing process includes continuously casting a thin slab and reducing the slab thickness using thermomechanical controlled processing, including dynamic recrystallization controlled rolling.

The invention discloses a controlling method of iron oxide sheet of rolled band steel surface of middle-thin board blank, which is characterized by the following: controlling component; proceeding heat load directly; heating to remove phosphor; rolling under high temperature; forcing to cool; controlling Si content in the steel; eliminating red ferric oxide on the surface of heat roll steel; fitting for the steel with not more than 0.18%C, not more than 0.20% Si, not more than 1.50% Mn, not more than 0.015% P, not more than 0.01% S and Nb, V and Ti.

A mini-truss thin-sheet panel assembly. In one embodiment, a substantially rigid thin-sheet panel assembly having a non-rigid thin-sheet component includes the thin-sheet component which has selected plan area and shape, a backer having a plan shape and area substantially similar to the thin-sheet component, and plural riser elements of selected height and configuration each extending from the backer to distal ends connected to a reverse surface of the thin-sheet component, the riser elements being configured and disposed in an array which causes the assembly to have substantial rigidity in a selected direction in the thin-sheet component.

The production method of sheet billet conticasting tandem-rolling coil sheet is characterized by that said invention adopts the following technical measures: using conticasting machine and making pulling rate of casting blank low, and making the blank material have reasonable section; compactly arranging conticasting machine and heating furnace, making the conticasting blank output roller conveyer and inlet roller conveyer of heating furnace have double purpose, making inlet temp. of casting blank be above 900 deg.C; adopting double furnace and hating; and adopting small-cross charging and tapping process; two-high reversing rougher for three passes, four-high reversing rougher for one pass; and adopting thermal coiler box process of workpiece so as to raise coil sheet quality and reduce its production cost.

A method for casting medium carbon, B/Ti steel product using compact strip processing or thin slab casting. The method can include providing a steel composition including boron and titanium and casting the steel composition into a slab having a thickness between about 25 and 150 mm. The slab can have a cast composition including about 0.23 to 0.30 wt. % carbon, about 0.0010 to 0.0050 wt. % boron, about 0.010 to 0.050 wt. % titanium, about 1.15 to 1.50 wt. % manganese, less than 0.35 wt. % silicon and a Ti/N ratio greater than 2.9. The amount of each element is provided based upon the total weight of the steel composition. The steel slab can be free from cracks and significant defects. Furthermore, the steel slab can be used for electric resistance welded (ERW) products.

An integrated control method for the shape of medium-thin plate in conticasting and tandem rolling includes finishing shape setting control model, automatic thickness control AGC, the affection of laminar flow cooling to plate shape, and use of new roller technique. The roller bending force and the positions of serial rollers are set up and regulated by plate shape controlling model, which consists of presetting control model, dynamic control model and plate shape and thickness decoupling model.

The invention discloses a method for producing high-strength low-carbon bainite steel based on thin slab continuous casting and rolling process. The method includes the following steps: melting by using a rotary furnace or an electric furnace, refining molten steel in an LF furnace after the component analysis, performing the composition adjustment, continuously casting thin slabs, directly heating the thin slabs at the temperature of 950-1100 DEG C in a roller-hearth heating (soaking) furnace at a temperature not less than 1150 DEG C, controlling the tapping temperature of heated thin slabs in a range from 1050 DEG C to1160 DEG C, rolling by using a continuous rolling mill to produce plates, finishing at a temperature of 840-860 DEG C, performing laminar cooling, and coiling with a down coiler at a temperature of 550-600 DEG C to produce the steel coil. The method can produce non-tempered high-strength steel based on thin slab continuous casting and rolling process, and has the advantages of simple metallurgical composition of steel, low cost of alloying production, and stability in high toughness and good forming and welding properties of the steel coil.

A steel strip for J55 petroleum casing with high strength and high toughness petroleum casing and a manufacture method thereof belong to the field of micro-alloyed steel production technology. The method comprises converter smelting, LF refining, medium-thin slab continuous slab, heating, high-pressure water descaling, hot rolling and laminar cooling, and reeling, wherein the chemical components of steel comprise (wt%) C 0.15 to 0.20, Si 0.15-0.30, Mn 1.00 to 1.45, P not larger than 0.020, S not larger than 0.010, Nb 0.020 to 0.040, Ti 0.015 to 0.040, Al 0.020 to 0.050, and allowance Fe and other in inevitable impurities. A J55 petroleum casing with a yield strength of 420 MPa can be produced by combining Nb and Ti, micro-alloying and reasonable production process, and the product has the advantages of high strength, high toughness and good solderability.

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.

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.

Process for hot rolling of high-strength low-alloy steel cast in Compact Strip Production as a thin slab. The strain and temperature at initial roll stands where deformation occurs allows full recrystallization, and at latest roll stands where deformation occurs there is no recrystallization. Deformation is absent at strains and temperatures where partial recrystallization would occur, allowing increased recrystallization over conventional CSP rolling. The result may be beneficial for microalloyed high-strength low-alloy steel in permitting accurate ultrasonic testing of welds. The time allowed between deformation at passes through roll stands may be increased by eliminating deformation at one or more central roll stands. Combined with increased strain at the initial roll stands where the temperature of the steel is in the full recrystallization region, the process may result in a relatively fine and uniform austenite grain size.

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.

The invention discloses a 600MPa high strength weathering steel and the manufacturing method, which is characterized in that: the 600MPa high strength weathering steel adopts electric stove-thin slab continuous casting and rolling process for preparation; the main chemical components of the refined molten steel for preparing the high strength weathering steel are: C: 0.045 wt % to 0.07wt%, Si: 0.10 wt % to 0.29wt%, Mn: 0.8 wt % to 1.5wt%, P: 0.005 wt% to 0.030wt%, S: 0.002 wt% to 0.008 wt%, Cu: 0.20 wt% to 0.5wt%, Cr: 0.3 wt% to 0.7wt%,Ni: 0.15 wt % to 0.35wt%, Ti: 0.06 wt% to 0.079wt%, Nb: 0.035 wt% to 0.050wt%, Alt: 0.025 wt% to 0.050wt%. The 600MPa high strength weathering steel has the advantages of low cost, strong competitiveness, cold formability, good welding performance and application to tower frame, heavy duty automobile, bridge, container, railway vehicle manufacture.

The invention relates to a method for determining the position of the measurement point cloud of the sheet stamping workpiece before rebound based on finite element method. The method comprises: transferring the point cloud data to the corresponding position in a geometric model; converting the data cloud data into triangle or quadrangle grids, and outputs into a finite element input format file to obtain the grid of sheet material; establishing simulation model according to the actual mould profile to obtain the mould profile grids; establishing a simulation model according to the mould and sheet material grids, and pressing the rebounded grid reversely the position before rebound; and outputting the nodes in the finite element to obtain the position of the measurement point cloud before rebound. Applying the invention can determine the rebounded compensation profile or the edge trimming line on the rebounded workpiece rapidly and accurately.

The invention discloses a method for preparing a titanium alloy thin plate by cladding and rolling of a steel plate, and relates to a processing method of a metal plate. It is characterized in that the rolling process is that the titanium alloy plate is hermetically covered by a steel plate to form a stacked rolling bag, and then rolling is carried out. The method of the invention has low rolling cost, and the titanium alloy thin plate is produced by cladding, welding, stacking and hot rolling, the process is simple, and the comprehensive performance of the obtained material is excellent.

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.

The invention relates to a method for producing thin-gauge dual-phase steel by applying a thin slab continuous casting and rolling process. The method comprises the steps: continuously casting molten steel to form a continuous casting slab with the width of 1300-1600mm and the thickness of 62-94mm; then, sequentially carrying out rough rolling, heat insulation by a heat insulation cover, induction heating, high-pressure water scale removal and finish rolling to obtain ultrathin strip steel with the width of 1300-1600mm and the thickness of 1.5-1.8mm; and finally, carrying out controlled cooling, coil-by-coil shearing and coil winding. A finished product of the thin-gauge dual-phase steel has the yield strength of 370-390MPa, the tensile strength of 590-630MPa and the elongation rate of larger than or equal to 15%. By using the method, hot-rolled thin-gauge dual-phase steel of which the size precision, slab shape precision and comprehensive mechanical property can meet requirements can be stably produced.

A nozzle for transferring molten steel in a thin slab continuous casting machine from the tundish to the mold which provides at least two areas of stream compression below the major changes in section required to transition from the entry diameter to the rectangular submerged portion of the nozzle.

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.

The invention provides nickel-free weather-resistant steel and a method for preparing a hot rolled plate thereof, and mainly solves the technical problems of high cold crack index, not very good welding performance and the like due to high C, Si and Mn content of the conventional nickel-free weather-resistant steel. The technical scheme is that: the weather-resistant steel comprises the following alloying ingredients in percentage by weight: 0.05 to 0.10 percent of C, 0.35 to 0.50 percent of Si, 0.38 and 0.50 percent of Mn, 0.07 to 0.11 percent of P, less than 0.010 percent of S, 0.45 to 0.60 percent of Cr, 0.25 to 0.45 percent of Cu, 0 to 50ppm of B, and the balance of Fe. The nickel-free weather-resistant steel of the invention is mainly used for replacing high-grade 09CuPCrNi weather-resistant steel.

The invention discloses a vacuum clamp for machining a thin-plate type part, comprising a bottom plate provided with a smooth upper surface, wherein the bottom plate is machined with a worktable connecting hole; a vacuum adsorption groove is machined in the bottom plate; the vacuum adsorption groove is an annular groove which is matched with the edge of the bottom plate in shape; a region surrounded by the vacuum adsorption groove is provided with at least one communication groove which is communicated with the vacuum adsorption groove; the vacuum adsorption groove is internally provided with a plurality of groove control holes connected with a vacuum pump; each groove control hole is provided with a sealing plug; and the sealing plugs are detachably connected with the groove control holes. According to the vacuum clamp disclosed by the invention, the principle of the vacuum pump is utilized to adsorb a part to be machined on a vacuum clamp; and when being machined, the part is machined according to the size, so that the higher machining precision is achieved.

The invention discloses a 700MPa compound strengthening bainitic steel and a method for making the same. The compound strengthening bainitic steel is manufactured by adopting thin slab continuous casting and rolling process, wherein, the main chemical compositions in percentage by weight of the refined molten steel are: 0.03 to 0.07 percent of C , 1.51 to 2.10 percent of Mn, 0.50 to 0.80 percent of Cr, 0.10 to 0.15 percent of Ti, less than or equal to 0.30 percent of Si, less than or equal to 0.020 percent of P, less than or equal to 0.010 percent of S, the balance being Fe and inevitable residual elements. The invention realizes that the yield strength of the prior 345MPa hot-rolled sheet doubles and opens a new way to produce 700MPa high-strength steel by saving expensive alloying elements like Mo, Ni and so on. At the same time, the steel structure mainly comprises fine bainites, which improves the work hardening capacity of the high-strength steel and has a good forming property.

Each side (11a) of a thin metal plate (11) is held with clamps (27). The thin metal plate (11) is pulled by the clamps (27), and tensile force by each clamp is adjusted to hold the thin metal plate (11) in a flat state without distortion and sagging. At the same time, a frame (13) is elastically deformed by pressing it, with a force having the same magnitude as the tensile force applied to the thin metal plate (11), in the opposite direction to the tensile force. Then, in this state the thin metal plate (11) is welded and fixed to the frame (13) by a spot welding machine (40). When the thin metal plate (11) and the frame (13) are freed, tensile force remaining in the plate (11) is cancelled by restoring force of the frame (13). This prevents the frame (13) from being pulled by the thin metal plate (11) and deformed, and the frame (13) can hold the thin metal plate (11) in a state without distortion and sagging.

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.

The invention relates to a method for producing ultrathin low-carbon steel by use of a thin slab casting and rolling process. The method comprises the following steps: continuously casting molten steel into a continuous cast billet with the width of 1,300-1,600 mm and the thickness of 60-100 mm; then sequentially conducting rough rolling, heat preservation by a heat holding cover, induction heating, high-pressure water phosphorus removal and finish rolling to obtain ultrathin strip steel with the width of 1,300-1,600 mm and the thickness of 0.8-1 mm; and finally, performing controlled cooling, roll-dividing cutting and roll take-up. A produced ultrathin low-carbon steel end product has the yield strength of 250-310 MPa, the tensile strength of 350-400 MPa and the ductility of larger than or equal to 35%. By adoption of the method, stable production of hot-rolled ultrathin low-carbon steel with the thickness of 0.8-1 mm can be realized, the dimensional accuracy, the flatness accuracy and the comprehensive mechanical property can be improved, the demand for 'replacement of cold product by hot product' is met and the production cost is lowered.

The invention discloses a 30CrMo steel strip and a production method thereof. The steel strip comprises the chemical compositions of, by mass, 0.26-0.34% of C, 0.17-0.30% of Si, 0.40-0.70% of Mn, less than or equal to 0.025% of P, less than or equal to 0.025% of S, more than or equal to 0.010% of Als, 0.80-1.10% of Cr, 0.15-0.25% of Mo, less than or equal to 0.30% of Ni, less than or equal to 0.30% of Cu, and the balance Fe and unavoidable impurities. The production method comprises the process of converter smelting, LF refining, thin slab continuous casting, heating, hot continuous rolling and coiling. The 30CrMo steel strip and the production method thereof start from the point of full process technology, the center shrinkage, the center segregation and the surface decarburization of the slab are eliminated, and the hot-rolled thin gauge steel strips with the thickness of 2.5-4.0mm are produced, so that the low-cost production of 30CrMo steel strip is realized.

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.