50results about How to "Ensure shape" patented technology

The invention discloses a method for rolling a thin high-strength steel plate of a single-frame steckel mill. The method comprises the following steps: producing the finished product of a high-strength steel plate with a thickness less than 10 millimeters by using a blank with the thickness of 150 millimeters and the length more than 10 meters; and then acquiring the thin high-strength steel plate with qualified property and plate shape by controlling a tapping temperature, a coiler furnace temperature, a reduction in last pass, a roller force, a final rolling speed and a high pressure water de-scaling system. When the rolling method is used for producing the thin steel plate, the thin high-strength steel plate is rolled by utilizing the heat preservation function of front and back mill coiler furnaces and controlling the tapping temperature of the blank, the reduction in the last rolling pass, the roller force and the final rolling speed, and the acquired plate shape and property of the steel plate are both qualified, thereby increasing the rolling mill capacity and achieving high plate yield and high property yield.

The present invention discloses a device for processing columnar curved tempered glass. The device mainly comprises a glass heating furnace, a glass bending mechanism and a glass tempering mechanism connected sequentially, wherein the arrangement of each supporting roller in the rollers supporting the high temperature flat glass is changed from planar arrangement in space into curved arrangement corresponding to the shape of the glass to be formed, so that the glass bending mechanism enables the glass to suffer bending deformation. Transferring rollers for outputting the formed curved glass in the axial direction of the supporting roller are arranged at the clearance of the rollers of the bending mechanism. In the present invention, bending shaping and tempering of the high temperature flat glass are completed by two stations to break the normal procedure that bending shaping tempering are carried out by one bending appliance intensively, thereby providing a novel technological approach for processing columnar curved tempered glass.

The invention discloses a manufacturing method for X90 pipeline steel longitudinal submerged arc welding pipe, the mass percent of the X90 pipeline steel consisting of: C 0.04-0.08%, Mn1.60-2.0%, Si 0.15-0.45%, S<=0.006%, P<=0.010%, Ni 0.20-0.50%, Mo 0.10-0.30%, Ti 0.010-0.020%, Al 0.015-0.050%, Nb 0.05-0.10%, V<= 0.05%, N <= 0.01%, Cu 0.10-0.30%, Cr <= 0.35%, B <= 0.004%, the rest is Fe, wherein Ceq <= 0.50, Pcm<= 0.25; the inside welding and outside welding adopt 4-wire submerged arc automatic welding. The welding pipe of the invention has advantages of tenacious welding joints and uniform performance.

The invention belongs to the field of steel rolling and discloses a plate shape control method of a hot-rolling and curved-rolling steel plate of a single-rack steekle mill. The plate shape control technology of the hot-rolling and curved-rolling steel plate of the single-rack steekle mill is realized by the steps of adjusting a heating system, optimizing temperature setting of a coiler furnace, adjusting coiled-rolling tension force of the coiler furnace, optimizing a down-pressing system, utilization of bending rolling force of a milling machine and a straightening machine as well as a roller convex degree of a working roller, improving temperature of cooling water which keeps a thin coiled-rolling plate, using an edge shielding function of a laminar flow cooling system, comprehensively adjusting straightening process of edge rollers and bending rollers of a hot straightening machine and the like. When a long billet with a thickness of 150 mm to 220 mm and a steel plate with a rolling thickness not greater than 12 mm are used, the plate shape control method disclosed by the invention has the advantages of synthetically controlling plate shape of the coiled-rolling steel plate and optimizing mechanical properties of the coiled-rolling plate.

The invention belongs to the technical field of aluminum alloy manufacturing, and relates to a preparation process of a high-performance 7-series aluminum alloy sheet. The alloy comprises smaller thanor equal to 0.10% of Si, smaller than or equal to 0.15% of Fe, 1.7-1.9% of Cu, 2.4-2.55% of Mg, 5.8-6.0% of Zn, smaller than or equal to 0.24% of Cr, smaller than or equal to 0.04% of Ni, smaller than or equal to 0.03% of Ti, smaller than or equal to 0.05% of Mn, and smaller than or equal to 0.15% of impurities (with a single impurity being smaller than or equal to 0.05%), with the balance beingAl. By improving the formula and the process, the unevenness and the performance uniformity of the prepared aluminum alloy sheet in the width direction are guaranteed, and the problem that an ultra-large-width aluminum alloy coil prepared by an existing rolling process has poor performance uniformity and flatness in the width direction is solved.

The invention discloses a high-strength cold-rolled electrogalvanized binding strip, which comprises the following components in percentage by weight (wt%): 0.05-0.10% of C, 0.40-1.0% of Mn, no more than 0.010% of Si, no more than 0.010% of P, no more than 0.010% of S, 0.40-0.60% of Ti, 0.30-0.70% of Cr, 0.50-0.80% of Ni, and 0.030-0.060% of Als; the production method comprises the following steps: melting and continuously casting into blanks, and conducting conventional cast blank heating; conducting hot rolling; conducting conventional pickling; carrying out secondary cold-rolling and secondary annealing; producing strips. The binding strip is 1.0mm thick, the tensile strength is no less than 1000MPa, the elongation rate is no less than 10%, the number of repeated bending times is no less than 10 (R=5mm), an electrogalvanized layer which is uniform and compact, strong in adhesion strength and is 1.0-2.0mu m thick is formed on the surface of the strip, the strip cannot have obvious rusting for 150 days after being placed in interior atmospheric environment, thus being good in profile, and completely meeting the binding and packaging requirement of a precise and ultrathin cold-rolled steel strip.

The present invention provides a position mechanism including a locating body. The locating body defines a locating cavity and a receiving chamber communicating with the locating cavity. A locating stopper is received in the receiving chamber of the locating body with an end thereof toward the locating cavity, and an elastic component is received in the receiving chamber of the locating body and resiliently biases the locating stopper into the locating cavity.

The invention discloses a numerical-control automatic cam lathe comprising a frame, an engine base, a nose, a spindle, a numerical-control operator, a feed device and a numerical-control cutter rest. The numerical-control cutter rest is provided with an X-axis cutter, a Y-axis cutter and a Z-axis cutter, and the Z-axis cutter is driven by an eccentric cam connecting rod mechanism. The numerical-control automatic cam lathe has the advantages that the eccentric cam connecting rod mechanism controls cutter feed, is combined with numerical control and the like to perform fine operation and guarantee size accuracy in product processing; workpiece clamping is completed through automatic feeding, labor is reduced and labor efficiency is improved; cut workpieces are automatically fixed, multi-directional cutting can be realized, cutting requirements of different shapes are met, the same workpiece can be processed and formed on the lathe at one step without frequent changing devices, full-automatic cutting process is realized, processing size and shape and position tolerance of the workpiece are guaranteed, and production efficiency and product processing speed are effectively improved.

The invention relates to a laminar cooling edge shielding device which comprises an upper laminar manifold device, the two ends of the upper laminar manifold device are fixedly connected with a water tank supporting beam, the two sides of the water tank supporting beam are provided with a transmission side water collecting tank and a work side water collecting tank correspondingly, the water tank supporting beam comprises an upper fixing beam and a lower fixing beam, the upper fixing beam and the lower fixing beam are connected through a connection support, the connection support is provided with a water tank hydraulic cylinder, the transmission side water collecting tank and the work side water collecting tank are pushed by respective water tank hydraulic cylinders to slide on the water tank supporting beam, the transmission side water collecting tank and the work side water collecting tank are connected through a corrugated telescopic water pipe, and the bottom of the transmission side water collecting tank is provided with a drainage hose. The spraying area of cooling water in the width direction of strip steel is adjusted, the phenomenon that cooling distribution of a laminar cooling system in the width direction of strip steel is solved, strip steel edge temperature drop is reduced, and the strip steel cross section temperature difference is reduced.

The invention relates to a manufacturing method of a marine 5Ni steel plate with low remanence and excellent surface quality. The technological process is converter smelting -> LF refining -> RH highvacuum degassing -> Ca treatment -> continuous casting -> casting blank slow cooling treatment -> casting blank surface cleaning -> heating -> rolling -> quenching twice -> tempering. According to component design, low carbon, low silicon and 5% of Ni are adopted, and V and Nb are added, so that hardenability is improved, low-temperature toughness is improved, austenitic amorphous starting temperature is raised, the steel plate can be subjected to high-temperature rolling and high-temperature quenching, then the shape of the steel plate is remarkably improved, and the steel plate is suitable for production of thin specification products. According to the manufacturing method, optimization is performed from the perspectives of element design, technology control, base material organization,center segregation, quenching and tempering temperature and time and the like, and therefore it is guaranteed that the steel plate has good ductility, -130 DEG C low-temperature impact toughness, excellent surface quality and low remanence while high strength of the 5Ni steel plate is realized.

The invention discloses a self-balancing plunger-type upper spraying laminar flow cooling device which comprises a plurality of groups of upper spraying devices. Each group of upper spraying device comprises a collecting pipe, a plurality of spraying pipes, a cross beam, two plungers , two sets of driving devices and two sets of balancing devices, wherein the cross beam is arranged at both ends of the collecting pipe; a plunger hole is arranged in the cross beam along the horizontal direction; the two plungers are respectively arranged at both ends of the plunger hole; the two sets of drivingdevices are respectively arranged at both ends of the collecting pipe and connected with the two plungers; and the two sets of balancing devices are respectively arranged above the two sets of driving devices, each set of balancing device is correspondingly and fixedly connected with each set of driving device and the plunger through a synchronization board. Compared with the prior art, the self-balancing plunger-type upper spraying laminar flow cooling device can automatically guarantee the force balance of the driving devices when regulating the laminar flow cooling width, thereby improvingthe work stability, and avoiding the deflection torque which is caused by the single-side force of the driving devices and can affect the stability of plunger drive.

The invention discloses an upper spray cooling device arranged among finishing mill racks. The device is arranged above strip steel and at an inlet side of a finishing mill rack. The device comprises a split-type collecting pipe, a plurality of rows of spray pipes, a plurality of opening and closing values and a plurality of driving devices, wherein the split-type collecting pipe is arranged perpendicular to the operating direction of the steel strip; the spray pipes are uniformly arranged along the axial direction of the collecting pipe, each row of spray pipes comprises a plurality of spray pipes arranged along the radial direction of the collecting pipe, and the spray pipes are communicated with the collecting pipe through the upper ports of the spray pipes; the opening and closing values are correspondingly arranged above the plurality of rows of spray pipes and vertically move to break the upper ports of the plurality of rows of spray pipes; and the driving devices are fixedly arranged in a plurality of supports on the split-type collecting pipe, respectively and correspondingly arranged above the plurality of opening and closing values and correspondingly connected with the plurality of opening and closing values so as to realize the driving motion on the opening and closing values. The upper spray cooling of the finishing mill rack has a simple structure, and meanwhile, the adjustment of cooling water along the width direction of the strip steel can be realized.

The invention provides a steel plate straightening method. The steel plate straightening method comprises the steps that whether a rolled steel plate is abnormal or not is judged, if the rolled steelplate is abnormal, steel plate parameters of the steel plate are input, new straightening parameters are obtained through calculation according to the steel plate parameters, the new straightening parameters are sent to a basic automatic control system, and the basic automatic control system controls a straightener to straighten according to the new straightening parameters. According to the steelplate straightening method, calculating the steel plate parameters of the abnormal steel plate is carried out to obtain the new straightening parameters, the straightener is controlled to straightenaccording to the new straightening parameters, and the straightened abnormal steel plate is obtained, so that the shape of the steel plate is guaranteed, and the waste quantity is reduced.

The invention discloses a fire extinguishing bomb with a fine control function, and belongs to the technical field of forest fire extinguishing. The fire extinguishing bomb comprises a barrel type empennage, a rear cover, a control module, a safety detonating device, a tail baffle, a warhead shell, a preset protection barrel, a fire extinguishing agent, a main explosive, a connecting body, a pulseengine shell, a pulse engine shell, a blocking piece, a front baffle, a closing switch and a heat detector. According to the fire extinguishing bomb, the advantages that the pulse engine is fast in reaction and can be started in situ are utilized, the low-speed flying bomb can accurately control and correct the flying posture of the bomb at the tail end of a trajectory, air shock waves generatedby explosion of the main explosive rapidly scatter forest big fire into small fire, the fire extinguishing agent forms a covering layer within the range of being exploded into the small fire in a firescene under pushing of air waves generated after explosion of the explosive, continuous combustion of the small fire can be weakened, and reburning of remaining fire can be inhibited. The fire extinguishing bomb further has the advantages of being simple in structure, safe, reliable, high in fire extinguishing efficiency, small in environmental pollution and the like.

The invention provides a three-dimensional full-flow control method for online steel plate solution treatment, and belongs to the field of control. According to the three-dimensional full-flow control method, to solve the bottleneck problem that the plate shape is not good after a steel plate is rolled and cooled during application of the online solution treatment technology, a post-rolling cooling device capable of being controlled in a three-dimensional full-flow mode in the longitudinal direction, the transverse direction and the vertical direction is utilized, three-dimensional full-flow control over the cooling device is carried out according to the hardness and the plate shape of the cooled steel plate, and therefore the hardness and the plate shape of the rolled and cooled steel plate subjected to online solution treatment are ensured.

A method for correction of an optical proximity effect, comprising: parsing and dividing the periphery of a design pattern to obtain segments to process; for a segment having a corner comprising a segment side (101) and an adjacent side (102) forming a corner relation with the segment side, setting a target point according to the following principle: when the length of the adjacent side (102) is greater than a preset length, the target point is set at the location of the outer end point (104) of the segment side; when the length of the adjacent side (102) is less than or equal to the preset length, the target point is set between the vertex (103) of the corner and the outer end point (104) of the segment side, and the less the length of the adjacent side (102), the further the target point from the location of the outer end point (104); and adjusting, according to a simulation difference of the target point, the design pattern until it conforms to a design target.

The invention discloses an automobile engine cylinder cover casting material, which is prepared from the following ingredients (by weight): 2.32-2.35% of carbon, 1.2-1.4% of silicon, 0.32-0.68% of manganese, 0.01-0.03% of titanium, 0.10-0.30% of aluminium, 0.22-0.28% of chromium, 0.22-0.28% of vanadium, 0.12-0.14% of molybdenum, 0.02-0.05% of tin, 0.012-0.014% of cerium, sulfur being less than or equal to 0.001%, phosphor being less than or equal to 0.004%, and the rest of iron. Mechanical properties of the automobile engine cylinder cover casting material are effectively improved. The cost is low, and the efficiency is high.

The invention relates to a batch production method of arc-shaped side keys and a machining tool. By adopting a line contact machining mode, one machining tool can be adopted to conduct arc surface machining on a plurality of side keys at the same time, the machining efficiency is high, the tool loss is small, and the machining cost is low; blanking of the whole raw material plate is achieved in a stamping or laser cutting mode, the machining efficiency of the arc-shaped side keys is improved, and batch production of the arc-shaped side keys is achieved; and in addition, the side keys are machined and formed in the mode that a plurality of side key areas are distributed in the rectangular array mode, and the accuracy of the shapes and the positions of the arc surfaces formed when the arc surfaces of the side keys are machined through the machining tool is ensured.

The invention relates to the field of steel making, in particular to a production method of a non-oriented electrical steel hot rolled plate. According to the production method of the non-oriented electrical steel hot rolled plate, molten steel is cast into a plate blank first, the plate blank is heated in a heating furnace, and then the heated plate blank is subject to roughing to obtain an intermediate blank, and the intermediate blank is subject to finishing rolling to obtain the hot rolled plate, wherein the thickness of the plate blank is 160-240mm, the plate blank is heated to 1120-1250DEG C in the heating furnace, the temperature of the plate blank in the roughing process is 1080-1230 DEG C, and the thickness of the intermediate blank is 36-40mm. By means of the production method of the non-oriented electrical steel hot rolled plate, the production of the non-oriented electrical steel hot rolled plate can be realized by adopting a common steel hot rolled plate production line,a special electrical steel hot rolled plate production line can be omitted, the production cost of the non-oriented electrical steel hot rolled plate is obviously reduced, and the production method has great popularization and application prospects.

The present invention provides an active steering device of a vehicle, comprising a basic small pinion angle generation part configured to generate a basic pinion gear angle with respect to the steering angle of a driver according to the gear ratio of the active steering device with respect to the vehicle speed; a correction pinion angle detection part configured to detect a preset correction pinion angle according to the steering angle; and a basic pinion angle regulation part configured to receive the basic pinion angle and the correction pinion angle from the pinion angle generation part and the correction pinion angle detection part, and the correction pinion angle is used for regulating the basic pinion angle and output the final pinion angle. The active steering device of a vehicle is able to improve the response speed of the vehicle and ensure the high speed stability when steering in emergency in the high speed emergency condition, besides, whatever how about the steering angle area, the increased steering with a preset amount is generated, so that the steering linearity of a vehicle is ensured.