65results about How to "Avoid uneven deformation" patented technology

A triple lip seal for reciprocating members, and especially for an inner cylindrical tube connected to a vehicle wheel and an off-road motorcycle or bicycle. The seal includes an oil side beam generally parallel to the axis of the reciprocating members and having at least two sealing lips for engaging the inner cylindrical tube and wherein the forces applied to the seal are balanced between the two lips to resist flattening of the sealing lips against the shaft and to enhance the service life of the seal. The seal also includes an air side beam having a third sealing lip engaging the inner cylindrical tube.

A ceramic multilayer substrate includes a plurality of laminated ceramic layers and at least one conductor pattern and disposed on at least one of the ceramic layers. The ceramic multilayer substrate has a cavity in at least a first main surface. The ceramic multilayer substrate includes a deformation preventing pattern disposed on at least one of the ceramic layers having an opening forming the cavity. The deformation preventing pattern surrounds the entire perimeter of the opening and is made of the same material as the conductor pattern.

The invention provides a method for controlling the shape of a high-strength steel plate. The method comprises the main steps of heating, rolling, cooling after rolling and straightening; and the heating temperature, the rolling pressure, the rolling temperature, the single-pass reduction amount, the rolling speed, the cooling temperature and the like are controlled. The method has simple operation, simplifies production procedure, shortens production cycle, reduces the transportation and transferring of the steel plate in the middle procedure, saves energy consumption, reduces the increase of unscheduled quantity and can achieve good plate shape; and practices prove that the performance of the steel plate is unchanged, meets various standards and has obvious economical benefit.

The invention relates to a nickel-chromium-tungsten-series high-temperature alloy seamless tube for a 700-DEG C ultra-supercritical boiler. The nickel-chromium-tungsten-series high-temperature alloy seamless tube comprises the following components in percentage by weight: 0.06-0.10% of C, 0.25-0.50% of Si, 0.30-0.50% of Mn, less than or equal to 0.03% of P, less than or equal to 0.010% of S, 22.00%-23.00% of Cr, less than or equal to 1.0% of Co, less than or equal to 0.5% of Al, 1.00-2.00% of Mo, less than or equal to 1.0% of Fe, 13.5-14.5% of W, less than or equal to 0.015% of B, 0.01-0.05% of La and the balance of Ni and trace elements. According to the nickel-chromium-tungsten-series high-temperature alloy seamless tube disclosed by the invention, components are controlled, parameters are limited, and a certain amount of elements such as W, Mo and La is added, and a manufacturing method adopts a vacuum induction and electroslag re-melting smelting process, a hot-extrusion and cold-rolling process, and the like, so that the nickel-chromium-tungsten-series high-temperature alloy seamless tube has very good high-temperature strength and corrosion resistance as well as very good stability of a long-term aged structure and strength, and the structure and the performances completely meet use requirements of a tube for the 700-DEG C ultra-supercritical boiler.

The invention relates to a rubber buffering and vibration isolating elastomer structure which comprises an upper metal part, a rubber part and a lower metal part. An internal cavity structure is adopted by the rubber body of the invention to increase the buffering stroke of the rubber body, and the buffering deformation of the rubber body can reach 100%; and if the space along the axial direction of the elastomer structure is large enough, the buffering deformation can reach about 150%. The design of the cavity structure greatly increases the buffering deformation stroke of the rubber part by 2-4 times of the traditional rubber isolator, thereby greatly improving the buffering effect. The structure of the invention adopts the design of a gas channel; on the one hand, by the design of the gas channel, when the elastomer bears the impact load, because the action time of the load is short, the gas in the cavity is quickly discharged outwards through the gas channel, and the friction action of the gas and the channel increases the damping of the elastomer structure, thereby increasing the buffering effect of the elastomer structure; and on the other hand, by the design of the gas channel, the gas in the cavity can be smoothly discharged under the action of the load to avoid the uneven deformation of the rubber part caused by sealing of the cavity, thereby ensuring the rigidity stability of the elastomer structure in the deformation process.

The invention relates to a hot reverse extrusion forming method for a titanium alloy cup-shaped part, and belongs to the technical field of hot reverse extrusion forming technologies. The machining method comprises the steps of placing a heated blank into an extrusion container to be subjected to reverse extrusion one-time forming by utilizing the guide positioning action of a material pressing insert, and the roughing blank making step in the forming process of the cup-shaped part is omitted. The material pressing insert guarantees that lugs of the cup-shaped part are flush through the tension action of a back pressure spring; and meanwhile, because a floating male die is in linkage with the back pressure spring with higher back pressure tension, it is achieved that the cup-shaped part can be demolded smoothly after being formed. With the hot reverse extrusion forming method for the titanium alloy cup-shaped part, the phenomenon that in the traditional reverse extrusion process, because one single unloading spring is overhigh in back pressure, the material of a wall of a cup-shaped part flows inwards sharply to tightly hold a male die, and demolding is difficult to carry out is avoided, and meanwhile the reverse extrusion forming force is reduced, and the requirement on equipment tonnage is lowered; and additionally, because a titanium alloy cup-shaped force piece is formed atone time by adopting reverse extrusion in the preparation process, the step of roughing blank prefabrication in the existing technology is omitted, the production period is shortened, the manufacturing cost is reduced, and the economic benefit is greatly improved.

The invention discloses a novel nickel-chromium-cobalt-molybdenum high-temperature alloy seamless tube for a power station. The novel nickel-chromium-cobalt-molybdenum high-temperature alloy seamlesstube comprises the following components in percentage by weight: 0.03-0.10% of C, less than or equal to 1.0% of Si, less than or equal to 0.70% of Mn, less than or equal to 0.012% of P, less than or equal to 0.008% of S, 20.00-24.00% of Cr, 10.00-15.00% of Co, 0.70-1.50% of Al, 0.20-0.70% of Ti, 8.00-10.00% of Mo, less than or equal to 2.00% of Fe, less than or equal to 0.5% of Cu, 0.001-0.006% ofB, less than or equal to 0.005% of Pb, less than or equal to 0.005% of Sb, less than or equal to 0.001% of Bi, less than or equal to 0.010% of Sn, less than or equal to 0.010% of As and the balance Ni and trace elements, wherein the sum of the components is 100%. According to the nickel-chromium-cobalt-molybdenum high-temperature alloy seamless tube disclosed by the invention, a certain amount ofCo, Mo, B and other elements are added by controlling and limiting the components, a smelting process adopts vacuum induction and vacuum self-consumption, a tube manufacturing process adopts hot extrusion and full cold rolling, and finally solution treatment is performed; and by adopting the way, the alloy seamless tube has good structure stability, mechanical properties and process properties and can meet the using requirements of a heat exchange tube for the novel power station.

The invention relates to a method for producing an improved stainless steel seamless steel pipe, which comprises the steps of heating, piercing, rolling, acid cleaning and straightening a pipe blank, wherein the pipe blank is heated up to 100-200 DEG C before being straightened in the step of straightening; and before entering a straightening machine, the pipe blank is heated up through induction heating coils. The invention further adopts a mild straightening process in the step of straightening, and before entering a straightening machine, the pipe blank is heated up to 100-200 DEG C through the induction heating coils, thereby ensuring that the seamless steel pipe has little possibility in crack rectification and the produced steel pipe has fine straightness and degree of curve being less than 1.5mm/m. In addition, the invention adopts a continuous and equal-diameter hot piercing process and adopts a cold rolling process in the rolling process, thereby effectively preventing pipe materials from being unevenly deformed; and the produced steel pipe has the advantages of small tolerance between the outer diameter and the wall thickness, high accuracy, and better quality and more smooth surface.

The invention discloses a detachable spiral heat exchanger and a manufacturing method thereof. The detachable spiral heat exchanger comprises a shell, two pairs of outlets and inlets, a supporting framework, a first heat exchange plate and a second heat exchange plate, the outlets and the inlets are arranged on the shell, and the first heat exchange plate and the second heat exchange plate are arranged in the shell and are spirally alternately wound by taking the supporting framework as a center. As the supporting framework is firstly arranged and then the first heat exchange plate and the second heat exchange plate are wound by taking the supporting framework as the center, uneven deformation of the first heat exchange plate and the second heat exchange plate can be effectively prevented in winding.

The invention discloses a wind power tower drum foundation ring ribbed beam type foundation based on a combined structure, and relates to the technical field of onshore wind power generation. The system comprises a foundation ring, a circular concrete floor, a variable-cross-section H-shaped steel rib beam, a hollow concrete pillar, a toggle pin and a square steel shear connector. The foundation ring is connected with a wind power tower drum on the upper part, and a perforation reinforcing steel bar required by a traditional basic ring is removed and replaced with the prefabricated welding toggle pin, so that the basic ring and a foundation concrete form effective connection by utilizing favorable shearing resistance and pulling resistance of the toggle pin, and the construction difficultyin reinforcing steel bar perforating on site is remarkably reduced. The variable-cross-section H-shaped steel rib beam is connected with a foundation slab and the pillar through the shear connector so as to form a combined structure stress system, so that the mechanical characteristics of two materials are fully played, and larger internal force produced by the upper load can be resisted. The foundation system can be applied to a circular bearing platform of a circular spread foundation or a pile foundation, and is high in on-site construction efficiency and material-saving so as to have a good engineering application prospect.

The invention discloses a plate shape control method of high-strength steel for a longitudinal beam of a commercial vehicle. The plate shape control method comprises the following steps that: 1) a hotblank is charged into a furnace; 2) the plate blank is heated; (3) rough rolling is conducted, specifically, a 1+5 rolling mode is adopted, bending amount of a C-shaped bend or an S-shaped bend in the last pass is controlled within +/-10mm, wedge shape control range is controlled within +/-20[mu]m, and rough rolling finishing temperature is controlled within 1040-1080 DEG C; (4) finish rolling isconducted, specifically, outlets of F1-F4 racks adopt large convexity value control, F5-F7 racks adopt an equal-proportion convexity control mode, and convexity control range of a finished product is0-20[mu]m; 5) layer cooling is conducted, specifically, a front-section ultrafast cooling and rear-section air cooling mode is adopted; 6) slow cooling is conducted, specifically, preheating is conducted in advance in a heat preservation wall, and a steel coil is hoisted into the heat preservation wall for slow cooling; and 7) straightening and flattening are conducted. According to the plate shape control method of the high-strength steel for the longitudinal beam of the commercial vehicle, the high-strength steel for the longitudinal beam of the commercial vehicle prepared is good in apparent plate shape, has no potential plate shape risk, and completely meets the high-standard requirement of a rolling forming process of the high-strength steel for the longitudinal beam of the commercial vehicle on the plate shape.

The invention discloses a plate shape control method for steel for a hot-rolled high-strength stirring tank body. The plate shape control method comprises the following steps that (1) hot blanks are charged; (2) plate blanks are heated; (3) rough rolling is conducted, specifically, a 1+5 rolling mode is adopted, the bending amount of C-shaped bending or S-shaped bending of the last pass is controlled within +/-10mm, the wedge-shaped control range is within +/-20[mu]m, and the rough rolling ending temperature is controlled to be 1040-1080 DEG C; (4) finish rolling is conducted, specifically, large convexity value control is adopted for outlets of F1-F4 racks, an equal proportion convexity control mode is adopted for F5-F7 racks, and the finished product convexity control range is 0-30[mu]m;(5) layer cooling is conducted, specifically, a front-section ultra-fast cooling and rear-section air cooling mode is adopted; (6) slow cooling is conducted, specifically, preheating is conducted ina heat preservation wall in advance, and steel coils are discharged from a production line and hoisted into the heat preservation wall for slow cooling; and (7) straightening and flattening are conducted. The steel for the hot-rolled stirring tank body is prepared according to the plate shape control method, the apparent plate shape of a material is good, the warping amount during discharging cutting is less than or equal to 5mm, and the requirements of the welding process of an automobile concrete stirring tank body for the plate shape are completely met.

The invention relates to an equal biaxial tensile test device. The device includes a support plate used for placing a test piece, a plurality of connection mechanisms connected with the test piece and a plurality of traction discs connected with the connection mechanisms. Each connection mechanism includes a clamping unit, a driving unit and a traction unit, wherein the clamping unit is used for clamping the test piece, the driving unit is connected with the clamping unit and the two ends of the traction unit are connected with the driving unit and one traction disc respectively. Each driving unit includes a sliding block, a hydraulic cylinder, a piston and a piston rod, wherein the sliding block is slidingly connected with the support plate, the hydraulic cylinder is fixedly arranged on the sliding block and has an inner cavity, the piston is arranged in the hydraulic cylinder, one end of the piston rod is fixedly connected with the piston and the other end of the piston rod is fixedly connected with the clamping unit; the test device further includes a hydraulic pipe, a pipe cavity of the hydraulic pipe is filled with hydraulic oil, each hydraulic cylinder is connected with the hydraulic pipe, and the inner cavity of each hydraulic cylinder is communicated with the pipe cavity of the hydraulic pipe. The device can automatically adjust the uniformity of a force in each drawing direction through the hydraulic pressure, uniform force loading is achieved, and therefore the uneven deformation of the test piece is avoided.

The invention discloses a structural horizontal or vertical and rotatable shock insulation, damping and energy consumption structural system. A conversion layer or a reinforced layer and a reinforcing member can be arranged above a vertical shock insulation or damping and energy consumption layer, so that vertical non-uniform displacement of an upper shock insulation structure can be reduced. In a rotary shock insulation, damping and energy consumption structural system, each shock insulation, damping and energy consumption support on a rotary shock insulation, damping and energy consumption layer shares an identical integral rotation center, and each shock insulation and damping support can be positioned at the same height but at different inclination angles. In a vertical shock insulation, damping and energy consumption structural system, an oblique vertical shock insulation, damping and energy consumption layer is arranged, and a rubber support can be arranged between oblique sliding surfaces. In a vertical shock insulation, damping and energy consumption structural system, an oblique vertical shock insulation, damping and energy consumption layer is arranged on a large-span spatial structure, the inside of a band-shaped structure or an annular member is enclosed, and a pull rod, a pressure lever and a cable can be arranged for connecting. In a horizontal or vertical shock insulation, damping and energy consumption structural system of a large-span spatial structure, a conversion member is arranged above a vertical shock insulation, damping and energy consumption layer.

The invention discloses a bottom case of a display device, which comprises an outer edge and a plurality of first rigid structures, a second rigid structure, a first elastic structure and a second elastic structure arranged in the outer edge; the first rigid structures are arranged in rows at intervals; the second rigid structures are arranged in rows and staggered with the first rigid structure;a first elastic structure ring is arranged at the periphery of the first rigid structure and is used for absorbing the deformation amount generated by the expansion and contraction of the first rigidstructure; a second elastic structure ring is arranged at the periphery of the second rigid structure and is used for absorbing the deformation amount generated by the expansion and contraction of thesecond rigid structure. In the technical scheme of the invention, the expansion and contraction amount of the first rigid structure is absorbed by the first elastic structure; the expansion and contraction amount of the second rigid structure is absorbed through the second elastic structure, so that the external dimension of the case is effectively ensured, and the assembly effect of the bottom case and the display module is ensured.

The embodiment of the invention provides a mask and a preparation method thereof. The mask comprises a mask body, wherein the mask body is provided with a detection opening, and a balance pattern usedfor balancing stretching stress born by the detection opening, the balance pattern and the detection opening are located on two sides of a center line of the mask body in the first direction length correspondingly, and the first direction is perpendicular to the stretching direction of the mask body. After the mask is stretched, the deformation is uniform, the alignment precision stability of themask can be improved, and the evaporation deviation caused by the poor alignment precision of the mask in the evaporation process is avoided.

The invention belongs to the field of metal material processing, and particularly relates to a preparation method of Haynes 214 alloy strip foil, which comprises the following specific process flows: smelting, cogging and forging, hot rolling, solution treatment, acid pickling, sand blasting, repeated cold rolling, annealing and solution treatment of a finished product. The cogging forging heating temperature is 1030-1150 DEG C, and the total deformation is 35%-60%; the heating temperature of hot rolling is 1150-1250 DEG C, and the total deformation is 85-95%; the solution treatment comprises the following steps: preserving heat at 1100-1180 DEG C for 30-60 minutes, cooling with water, pickling the surface, and blasting sand; the rolling speed in cold rolling is 4-30 m/min, and the cold rolling deformation between two times of annealing is 30%-60%; the intermediate annealing temperature ranges from 1050 DEG C to 1150 DEG C; and the solution treatment of the finished product comprises the following steps: preserving heat at 1065-1120 DEG C for 10-60 minutes, cooling by adopting 99.999% high-purity argon after the heat preservation is finished, keeping the heat preservation temperature to 200 DEG C and the cooling rate greater than 180 DEG C/min, and then correcting the plate shape. The strip foil prepared through the method has the advantages of being high in size precision, smooth in surface, good in uniformity and consistency and the like, and higher use requirements can be met.