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1640results about How to "Improve straightness" patented technology

Method of sheet billet continuously casting and rolling to produce thin strip steel coil

A method of using thin plate adobe continuous casting and rolling to producing thin band steel coil is provided, which belongs to rolling metal at once after continuous casting, in particular relating to thin standard band steel production method. The invention is characterized in that: a conticaster, a swing shear, a roller-hearth type heating furnace, a scale breaker, a vertical miller, 7 mill groups, laminar flow cooling device and reeling machine are connected to a CSP produce line, the produce line adopts reasonable temperature system, rolling equipment, rolling way and combining with cooling after rolling, the molten steel after continuous casting is a casting adobe of 50 to 70mm thick and 900 to 1300 wide, after cutting, heating, scale breaking, proceed continuous rolling to form a thin band of 1.2 to 1.5mm thick and 900 to 1300 wide, then after cooling to reel steel coil. The production flow is short, the equipment is few, the investment is less and the running expense is low; The technics and equipment is reasonable and high efficient, double locomotive and double flow casting, heating by two furnaces, seven rolling machines roll continuously, the production is smooth and saves energy with high production efficiency; the product performance is even and stable, the board shape is regular with high accuracy and good surface quality.
Owner:MAANSHAN IRON & STEEL CO LTD

Method for automatically controlling convexity and/or wedge of hot rolled in series type rolling machine and system thereof

ActiveCN101890435AAvoid snaking motionEliminate single disadvantagesProfile control deviceAutomatic controlEconomic benefits
The invention relates to a method for automatically controlling the convexity and / or wedge of a hot rolled in series type rolling machine and a system (ASCC) thereof. The method comprises the following steps of: building feedback control for the bending of a working roll and the flattening of a roll gap from a first finishing mill stander to a final finishing mill stander in the hot rolled in series type rolling machine to automatically control the convexity (wedge) of strip steel, i.e. comparing the strip steel wedge which is detected by an ASCC model with the object wedge during rolling to obtain the difference; and correcting the difference through the comprehensive computation and the control method of the system to build a step type adjusting method. Therefore, the invention maximizes the response of the feedback control to correct the wedge and the convexity of the strip steel, guarantees the good flatness of products, prevents the strip steel to have snake-like motion in each stander, overcomes the defect that the existing convexity controlling method is single, and comprehensively balances the relationship between the convexity and the wedge. The invention can guarantee the convexity precision of the wedge along the long axis direction of the strip steel, improves the flatness, guarantees the product quality and the production safety, and can effectively improve the economic benefit of steel rolling factories.
Owner:INST OF RES OF IRON & STEEL JIANGSU PROVINCE

Manufacturing method of lamp-cover-supporting LED tubular lamp with self-clamping heat transmission substrate

The invention discloses a manufacturing method of a lamp-cover-supporting LED tubular lamp with a self-clamping heat transmission substrate, and belongs to the technical field of supporting or hanging or connecting of lighting devices. The manufacturing method of the LED tubular lamp includes the steps that S1, the heat transmission substrate is inserted into strip-shaped clamping grooves from side ports of the strip-shaped clamping grooves; S2, after the heat transmission substrate is installed in the strip-shaped clamping grooves, a lamp cover covers a radiator; S3, the lamp cover exerts two acting forces on two T-shaped hooks, and the heat transmission substrate is installed in the strip-shaped clamping grooves in a clamped mode; S4, the radiator, the heat transmission substrate and the lamp cover form a lamp tube of the LED tubular lamp, and two end covers are installed at the two ends of the lamp tube of the LED tubular lamp. According to the lamp-cover-supporting LED tubular lamp with the self-clamping heat transmission substrate, the heat transmission substrate can be arranged in the strip-shaped clamping grooves in the clamped mode because the strip-shaped clamping grooves are formed in an installing part of the heat transmission substrate, heat dissipation efficiency can be improved, and the heat transmission substrate is prevented from thermal deformation.
Owner:辽宁三维传热技术有限公司 +1

Double-flexible-grinding-head magnetorheological polishing device

ActiveCN102632435AEfficient removalEffectively match processing efficiencyGrinding drivesGrinding feed controlMagnetic currentEngineering
The invention discloses a double-flexible-grinding-head magnetorheological polishing device. In the device, a vertical gantry of a bed body and an X-axis are both fixed on a horizontal base; a worktable is fixed on a sliding block of the X-axis; a Y-axis is fixed on a horizontal beam of the vertical gantry; and a first Z-axis and a second Z-axis are arrangedon the Y-axis in parallel. A large flexible grinding head is installed on the first Z-axis; and a small flexible grinding head is arranged on the second Z-axis. A high-flow circulation system connected with the large flexible grinding head and a low-flow circulation system connected with the small flexible grinding head are arranged on a trolley. A control cabinet is arranged at the rear part of the vertical gantry; and a circulation system cabinet and a cleaning system are arranged at the side surface of the vertical gantry. The double-flexible-grinding-head magnetorheological polishing device provided by the invention has the advantages of high accuracy, high rigidness, high stability and high dynamic property. The double-flexible-grinding-head magnetorheological polishing device not only can be used for processing of large-caliber phase elements, but also can be used for high-accuracy processing of large-caliber planar optical elements within the range of full caliber. The optimal matching of the processing efficiency and the processing accuracy can be realized.
Owner:INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS

Aramid rubber canvas fabric structure for high-strength conveyor belts and production process of aramid rubber canvas fabric structure

The invention discloses an aramid rubber canvas fabric structure for high-strength conveyor belts and a production process of the aramid rubber canvas fabric structure. The aramid rubber canvas fabric structure comprises warps and wefts, aramid materials are adopted in the warps, at least four warps are paved in the belt length direction, nylon industrial yarns are adopted in the wefts which are crisscrossly paved on upper end faces and lower end faces of the warps, the wefts on upper and lower layers are tightly crisscrossly bonded to the warps by adopting bundling yarns, and a canvas fabric structure is obtained after secondary bath gum dipping; the production process includes single-layer canvas knitting, secondary bath gum dipping and reeling. Single-layer structures of the warps adopting the aramid materials and the weft adopting the nylon materials are knitted through bundling yarns, the high-strength conveyor belts with the strength higher than 2500N/mm are produced after secondary bath gum dipping, mechanical physical properties of the conveyor belts are improved, layer reduction and weight reduction of the conveyor belts are realized during the production process, the conveyor belts are adaptively high strengthened, less layered and lightweight, energy consumption is reduced, the production process is further simplified, and production efficiency is higher.
Owner:浙江尤夫科技工业有限公司

Preparation process of sputtered rotary molybdenum-sodium-alloy tubular target

The invention discloses a preparation process of a sputtered rotary molybdenum-sodium-alloy tubular target. The preparation process comprises the following steps of: (1) preparing materials, wherein used powder comprises molybdenum powder and sodium molybdate powder, the physical property of the powder is as follows: the Mo content of the molybdenum powder is at least 99.95% with the granularity of 3-5 microns, and the sodium molybdate content of the sodium molybdate powder is at least 99.0% with the granularity of 20-40 microns; (2) blending the powder: weighing the molybdenum powder and the sodium molybdate powder proportionately, controlling the mass percentage content of the molybdenum powder to be 90-99% and that of the sodium molybdate powder to be 1-10%; (3) carrying out mechanical alloying: synthesizing nanometer molybdenum-sodium alloy powder; (4) filling into a die; (5) carrying out cold isostatic pressing; (6) sintering; (7) forging; (8) performing vacuum annealing; and (9) mechanically processing to obtain the sputtered rotary molybdenum-sodium-alloy tubular target. A produced molybdenum-niobium-alloy tubular target has characteristics of uniform elements, no segregation, fine grain size and high purity, completely meets requirements of CIGS (Copper Indium Gallium Selenide) photovoltaic cells and increases the use efficiency of the cells.
Owner:LUOYANG SIFON ELECTRONICS

Dipped canvas fabric structure in three-dimensional structure for heavy-duty conveyor belt and production process thereof

The invention discloses a dipped canvas fabric structure in a three-dimensional structure for a heavy-duty conveyor belt and a production process thereof. The dipped fabric structure is characterized in that an upper layer and a bottom layer adopt ground-facing warps (1) in the plain weave structure and weft (2) interwoven with the ground-facing warp, a straight warp (3) in the straight warp structure is utilized as an intermediate layer, a bundling warp (4) is connected with the weft (2), and the upper layer, the intermediate layer, the bottom layer and the bundling warp form the three-dimensional structure. The production process comprises the following processes: the process of weaving a fabric on a machine: adopting double warp shafts to send a warp woven cloth; and the process of stipulating a dipping formula and preparing, wherein a dipping solution is a mixture of an RF (resorcinol-formaldehyde) resin water solution generated by virtue of condensation polymerization of hydroxyphenol and formaldehyde and VP (vinyl pyridine) latex (L), the total content of solids is 18-22%, the pH value is 9-11, and the ratio of the RF to the L is (1:5)-(1:7). Polyester dipped canvas in the three-dimensional structure is especially applicable to production of the heavy-duty rubber conveyor belts and has the characteristics of tear resistance, puncture resistance and impact resistance.
Owner:浙江尤夫科技工业有限公司

Steel rail on-line wind-jet quenching heat treatment simulation experiment device

The invention relates to a steel rail on-line wind-jet quenching heat treatment simulation experiment device, and belongs to the technical field of steel metallurgy. The experiment device is composed of the structures of: a Laval-type flat-slot nozzle system, a steel rail guiding system, a frame system, a valve system, a compressed air pipe system, a roller way system, a detection instrument system, a steel rail heating furnace system, and the like. With wind, water, heating furnace, and roller way conditions in an experimental innovation platform in metallurgical rolling, a steel rail on-line wind-jet quenching heat treatment simulation experiment device is designed and manufactured, and a steel rail on-line wind-jet quenching heat treatment simulation experiment method is developed. The method and the device are used for carrying out heavy rail full-length on-line quenching simulation experimental researches. The experiment method is simple and reliable. With the method, heavy rail full-length on-line quenching process research period can be greatly shortened, and process research cost can be reduced. The method is a feasible method of laboratory simulation research currently. With the device and he method, technical support can be provided for a heavy rail full-length on-line quenching production line.
Owner:INNER MONGOLIA BAOTOU STEEL UNION

Telescopic arm open-cut rock drilling jumbo with drill rod replacing device

The invention relates to a telescopic arm open-cut rock drilling jumbo with a drill rod replacing device. The telescopic arm open-cut rock drilling jumbo comprises a cab, a chassis assembly, a propeller assembly, a telescopic arm, the drill rod replacing device, a rock drill, a control system and a power and air control system 36; the cab is arranged on a cab bottom plate of the chassis assembly, the control system is arranged in the cab, and the control system is connected with the power and air control system; the telescopic length, the pitching angle and the deflection angle of the telescopic arm, the elongation of a propelling beam and the pitching angle of the cab are controlled by the control system; the arm seat of the telescopic arm is fixedly arranged at the front end of the cab, the propelling beam is in sliding fit with the telescopic arm through a bracket on a compensation cylinder, the telescopic end of the compensation cylinder is fixedly connected to the propelling beam, and extending compensation of the propelling beam can be realized by stretching of the compensation cylinder; and the drill rod replacing device is fixed on the propelling beam and positioned below a transmission rod, and the rock drill is fixed at the upper end of the propelling beam. The multi-azimuth drilling requirement of the jumbo can be met, and the gravity center of the whole jumbo is kept stable.
Owner:CSIC ZHONGNAN EQUIP

Attitude control system and method based on wireless three-dimensional gyroscope technology for scraper conveyer

The invention discloses an attitude control system and a method based on a wireless three-dimensional gyroscope technology for a scraper conveyer. The system comprises a wireless three-dimensional gyroscope, hydraulic brackets, a bracket controller and a crossheading monitoring host, wherein the wireless three-dimensional gyroscope is arranged on a sliding chute of the scraper conveyer, and is used for detecting the running attitude of the scraper conveyer; a plurality of hydraulic brackets are connected to one side of the scraper conveyer in sequence; the movement of the scraper conveyer is realized under the pushing actions or pulling actions of the hydraulic brackets; the bracket controller is arranged on the hydraulic brackets, and is used for controlling the pushing or pulling actions of the hydraulic brackets; the crossheading monitoring host is arranged in a crossheading, and is used for concentrically monitoring and controlling the scraper conveyer, the bracket controller and hydraulic brackets; the wireless three-dimensional gyroscope is only communicated with the bracket controller in a wireless way; and the crossheading monitoring host and the bracket controller constitute a communication network system on a work surface through the bracket controller for performing data communication, so that attitude monitoring of the scraper conveyer is realized.
Owner:BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD

Three-dimensional printer and printing method and three-dimensional printing head

The invention relates to a three-dimensional printer, a three-dimensional printing head and a printing method. The three-dimensional printing head comprises a material volume cavity, wherein a screw rod is arranged in the material volume cavity, a motor is connected with the screw rod, a material supply device is communicated with the material volume cavity, a printing nozzle is arranged on the end part of the material volume cavity, a heater is arranged on the material volume cavity and positioned between the material supply device and the printing nozzle, and a supercritical fluid supply system is communicated with the material volume cavity. A molten printing material is mixed with supercritical fluid to generate a single-phase molten mixture under the mixing and stirring effect of the screw rod, and a uniform microporous bubble formation effect is formed, so that the density value of a printing object can be reduced, the size deviation of the three-dimensional printing object can be alleviated, the flatness and straightness of the three-dimensional printing object can be improved by more than 50 percent, the temperature for printing the molten printing material is effectively lowered, the energy is saved, and the operation personnel is prevented from being scalded.
Owner:PRINT RITE UNICORN IMAGE PROD CO LTD

Numerical control vibration deep-hole drilling and boring machining equipment and method

The invention discloses numerical control vibration deep-hole drilling and boring machining equipment, which is characterized by comprising a workpiece arranged on a machine tool body, a drill bit and a drill stem, wherein the workpiece is driven by a main motor to rotate; and the drill bit is driven by the motor to rotate along with the drill stem and is simultaneously driven by a servo reducing motor and a vibration motor to make numerical control feed movement and axial reciprocating vibration. By the deep-hole drilling and boring equipment, the functions of rotating the workpiece and the drill bit in a bidirectional mode and axial vibration drilling can be realized, the severe working conditions and the lubricating effect of a cutting area of the drill bit are improved, the cuttings are automatically controlled, the process range of the equipment is greatly widened, the machining precision indexes of the holes such as roundness and straightness are improved, and the hole machining quality and efficiency are improved further; and moreover, the problem of chip breakage and removal in the prior art is solved, the cuttings can be automatically separated, collected and conveyed, automation of the drilling process is realized, and the equipment can be widely applied to the field of machining of rotary deep-hole parts.
Owner:XIAN UNIV OF TECH

Preparation method for high-purity high-compactness and large-dimension molybdenum-titanium alloy sputtering target material

The invention discloses a preparation method for a high-purity high-compactness and large-dimension molybdenum-titanium alloy sputtering target material. The preparation method comprises the following steps that (1) material mixing is conducted, molybdenum and titanium hydride are selected as powder raw materials, the two kinds of powder are mixed under the argon protection atmosphere, and alloy powder is obtained; (2) compression molding is conducted, and the mixed powder raw materials are put into a rubber jacket mold to be subjected to cold isostatic pressing treatment; (3) sintering is conducted, a compressed blank is subjected to first-stage dehydrogenation sintering and second-stage compacting sintering in a vacuum sintering furnace, and finally the sintered blank is obtained; (4) rolling is conducted; (5) annealing is conducted; and (6) machining is conducted, the target material blank after being subjected to annealing is subjected to machining, and a molybdenum-titanium alloy sputtering target material product is obtained. The molybdenum-titanium alloy sputtering target material produced through the preparation method is uniform in content, free of segregation, fine and small in grain size, high in purity, and good in compactness.
Owner:LUOYANG SIFON ELECTRONICS
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