37 results about "Thick section" patented technology

The invention discloses a grading buffering type steel structure unloading adjusting device and method, and belongs to the technical field of steel structure engineering. Comprising a special-shaped steel plate, an L-shaped angle steel connecting piece, a fixing base, a spring steel sheet, a bowl-shaped outer-layer steel shell, a square gradient grid steel plate, a connecting strength bolt, an angle steel bolt, a slope arc extension plate fixing bolt, a slope arc extension plate, a bowl-shaped inner-layer steel shell and an L-shaped support, the special-shaped steel plate is in a long strip shape, the two ends of the special-shaped steel plate are thick sections, and the middle of the special-shaped steel plate is a thin section; the special-shaped steel plate is subjected to graded deformation according to the thickness difference, elastic friction cooperation is achieved through steel sheet-friction block compositing, the nested steel shell is subjected to hierarchical bearing, gradient grids are gradually changed along with the density to transfer force, extra regulation and control are not needed, the friction coefficient is high, the friction coefficient is high, and the friction coefficient is high. The load magnitude is automatically adapted, the response precision and the unloading efficiency are improved, and the structural safety and durability are enhanced.

The utility model relates to a kind of hard alloy assembly pinch roll, belong to steel rolling equipment technical field.The pinch roll includes roll ring, base and cover plate;The base and cover plate are all ladder shaft structure, and are divided into thick section and thin section;The base is coaxially arranged with cover plate and thin section is opposite, is fixedly connected by fastener, and two thin sections butt joint form the roll ring installation groove extending in circumference;The base and cover plate central through hole are equipped with inner hole;The roll ring is set in base and cover plate outer, and the inner hole of roll ring is equipped with the convex extending in circumference, the convex and the roll ring installation groove shape are matched and there is radial and axial interference fit.The utility model realizes the consideration of economy and durability by assembly structure, and reduces the instability of non-integral structure by structural design.

Rolling bearing holder unit (1, 1A, 5, 5A, 6, 7, 7A) comprising: a rolling bearing (2) including an outer ring (10), an inner ring (20) arranged coaxially with the outer ring (10) on an inner circumferential side of the outer ring (10), and a plurality of rolling elements (30) arranged between the outer ring (10) and the inner ring (20) having a predetermined axis of rotation (m); a bearing holder (60, 60A, 70, 70A, 80, 90, 90A) arranged in contact with an outer circumferential surface of the outer ring (10) or an inner circumferential surface of the inner ring (20) of the rolling bearing (2); and a strain gauge (100) incorporating a resistor configured to detect strain of the outer ring (10) or the inner ring (20), wherein the bearing holder (60, 60A, 70, 70A, 80, 90, 90A) has a thick section (61, 61A, 71, 71A, 81, 91, 91A) and a thin section (62, 62A, 72, 72A, 82, 92, 92A) with a thickness,which is smaller than the thickness of the thick section (61, 61A, 71, 71A, 81, 91, 91A), the strain gauge (100) is arranged on the thin section (62, 62A, 72, 72A, 82, 92, 92A), a preload is applied to the rolling bearing (2) to produce a predetermined contact angle, the thick section (61, 61A, 71, 71A, 81, 91, 91A) is arranged in contact with at least one area (DO) extending from an intersection (CO) of a straight line indicating the contact angle and the outer circumferential surface of the outer ring (10) or the inner circumferential surfaces of the inner ring (20) to a preload-side end face, wherein the preload-side end face is an end face of the outer ring (10) or of the inner ring (20) which is close to the intersection point (CO), and wherein the thin section (62, 62A, 72, 72A, 82, 92,92A) is in contact with a part of the outer circumferential surface of the outer ring (10) or a part of the inner circumferential surface of the inner ring (20).

The invention relates to a thin glass with a usable area having a thickness t of 15 to 300 µm and at least one side edge region, wherein the side edge region is in the form of a thickening with a maximum thickness T max with 1 <T max The invention relates to a manufacturing process for the thin glass, wherein the surface of the side edge region is continuously curved and connects to the usable area. The invention further relates to a manufacturing process for the thin glass.

To provide an inter-tunnel cut-off structure, a cut-off sheet, and a construction method for a large-section tunnel, which can be easily and surely constructed.SOLUTION: This water cut-off structure 3 between the tunnels is provided with a water cut-off sheet 4 arranged astride the adjacent box bodies 2, and a pressing tool 5 for holding an end part of the water cut-off sheet 4, and this construction method of the large cross section tunnel 1 uses this water cut-off structure 3 between the tunnels. A thickened part 44 is formed at the end of the water stop sheet 4 by providing a core material 42. A locking part 52 is formed at the end of the pressing tool 5, and the pressing tool 5 presses the water stop sheet 4 at the position of the core material 42 and holds the end of the water stop sheet 4 in a state of being locked to the thickened part 44 by the locking part 52.SELECTED DRAWING: Figure 2

A method of producing glass-based articles having sections of different thicknesses is provided, where a maximum central tension in a thinner section is less than that of a thicker section. The method includes reducing the thickness of a region of a glass-based article that includes a compressive stress layer extending from a surface to a depth of compression to form a glass-based article with multiple thickness regions, and then ion exchanging the glass-based article to form a stress profile in the thinner region that has a maximum central tension that is less than a maximum central tension of a stress profile of the thicker region. The glass articles produced by the method are also provided.

This invention relates to the field of lost-casting technology, and provides a point-to-point feeding gating system and method for casting thick sections of lifting lugs in lost-casting. The system includes a pouring cup, a sprue, and a runner. The pouring cup connects to the sprue, and the sprue connects to the runner. Four ingates are provided above the runner, directly connecting to the thick sections of the lifting lugs at the four corners of the foam model of the casting, forming a single feeding channel from the runner to the thick sections of the lifting lugs. The ratio of the cross-sectional area of ​​the runner to the cross-sectional area of ​​the ingates is 1.5:1 to 2.5:1, and the ratio of the cross-sectional area of ​​the ingates to the maximum cross-sectional area of ​​the thick section of the lifting lugs is 1:3 to 1:5. By adopting a simplified structure with a single main runner and four ingates, the redundant runners required for feeding the lifting lugs in traditional solutions are eliminated, reducing the material consumption of the gating system by more than 50% and increasing the process yield to over 85%.

This invention provides a post-weld heat treatment method for a tee branch pipe butt joint: After welding, the weld is cooled to 100°C and held at that temperature for 2 hours to allow for martensitic transformation. The main pipe and branch pipe are heated sequentially, with the main pipe reaching 650°C and the branch pipe reaching 750°C. The absolute value of the temperature difference between the branch pipe and the main pipe at the start of heating is equal to the absolute value of the temperature difference between the branch pipe and the main pipe at the end of heating. The branch pipe is held at 750°C for 9 hours. The main pipe and branch pipe are then cooled sequentially, eventually reaching 300°C simultaneously. After cooling to 300°C, the external heat source is cut off, and the pipe is kept at that temperature for slow cooling. The beneficial effects of this invention are: it ensures a controllable temperature gradient between the main pipe and branch pipe during the heating process, utilizing the higher temperature of the branch pipe to ensure sufficient stress release in its thicker sections, while preventing the induction of new thermal stress in the joint area due to excessive temperature difference.

The invention relates to the technical field of manufacturing of square throttle valve forgings, in particular to a production and manufacturing process of Inconel 625 square throttle valve forgings for deep sea oil and gas exploitation, which comprises the following steps: firstly, selecting proper raw materials according to an alloy formula of the square throttle valve forgings, smelting the raw materials into an electroslag ingot through a smelting process, and then treating the surface of the electroslag ingot, oxide skin and defects are removed; secondly, the step forging process is innovated, through the collaborative design of three-heating-number cogging forging and two-heating-number cutting forging and the combination of the large reduction rate and multidirectional deformation of the first pass, the strain penetration depth of the thick section is remarkably increased, compared with a traditional process, the effective strain cumulant is greatly increased, the problem that deformation at the corners of the square valve is not uniform is thoroughly solved, and the yield of the square valve is improved. And a narrow temperature area is accurately controlled, the finish forging temperature is monitored in real time by adopting an infrared thermometer, and a forgeable temperature window is stably controlled within the range of 170-200 DEG C in cooperation with die preheating and graphite lubrication, so that the risk of microcracks caused by the finish forging temperature less than 950 DEG C is avoided.

This invention provides a method for curing ultra-thick, irregular concrete roof slabs in medical linear accelerator chambers, belonging to the field of large-volume concrete structure construction technology. In this invention, as the roof slab pouring nears completion, the 1.5m thick slab is poured first, at which point the 3m thick portion of the slab is about to begin formwork pouring. The 1.5m thick slab enters the curing stage first and requires proper protection. After the 3m thick slab is poured, its sides differ from the top surface, requiring formwork curing. Curing utilizes geotextile for moisture retention and cotton cloth for insulation as basic methods, resulting in different treatment approaches for different thicknesses, the top surface, and the formwork-covered areas. This invention ensures that concrete at different development stages and under different exposure conditions can be cured in one go, preventing concrete cracking.

This utility model relates to the field of bridge engineering construction technology, and provides a rapid assembly and disassembly lifting tool for precast beams and slabs. It includes a lifting rod with a lifting hole at the top for connecting clamps or wire ropes, and a circular hole at the bottom of the rod containing a connecting pin. The connecting pin rotatably connects to the middle position of the boom, and the boom's cross-section has different shapes on both sides of the connecting pin. One end of the boom's cross-section is a short and thick section A, and the other end is a long and thin section B, with section A weighing more than section B. Limiting grooves are provided on the lifting rod, with several grooves evenly distributed along the length of the rod, and limiting plates are installed within these grooves. This utility model can meet the requirements for rapid assembly and disassembly of precast beams and slabs, reduces manual intervention, lowers the difficulty of operation for construction personnel, improves construction efficiency, reduces the input of manpower and materials, and is economical.

The utility model relates to the technical field of aluminum door and window production, in particular to a synchronous corner combining machine for aluminum doors and windows. The aluminum door and window synchronous corner combining machine comprises a box body, an assembling assembly, an assembling block and a sliding assembly, two bearing rods are symmetrically and fixedly connected to one side of the box body, a sliding groove is formed in the position, close to the bearing rods, of the top end of the box body, and a first electric push rod is fixedly connected into the sliding groove; a sliding block is fixedly connected to the driving end of the first electric push rod, a positioning block is installed on the side, away from the first electric push rod, of the sliding block through an assembling assembly, assembling blocks are symmetrically and fixedly connected to the top end of the box body, punching and riveting mechanisms are fixedly connected into the assembling blocks, and illuminating lamps are fixedly connected to the opposite angles of the rear side of the box body. According to the utility model, the problem of inaccurate positioning when thick section bars are positioned is effectively solved, so that the accurate splicing of corner parts during corner assembling is ensured, the overall appearance quality of doors and windows is improved, stable and appropriate pressure assistance is provided for the corner assembling process, and the section bars are prevented from displacing.

This application discloses a deviation measuring mechanism and a material conveying device. The material conveying device forms a thick section and at least one thin section. The deviation measuring mechanism includes a mounting frame, a triggering member, and a detection member. The detection member sequentially forms a substandard detection area, a standard detection area, and an over-standard detection area along the thickness direction of the material conveying device. When the triggering member comes into contact with the thin section, it is pushed by the thin section so that at least part of it is placed in the substandard detection area and outside the standard detection area. The triggering member can come into contact with the thick section and be pushed by the thick section so that at least part of it moves from the substandard detection area to the standard detection area and is outside the over-standard detection area. The triggering member can be further pushed by the thick section it comes into contact with so that at least part of it moves from the standard detection area to the over-standard detection area. When the detection member detects that at least part of the triggering member is placed in the substandard detection area and outside the standard detection area or at least part of it is placed in the over-standard detection area, it generates a corresponding deviation correction signal.

A force sensor includes: a first substrate, a second substrate and a third substrate that are disposed so as to be spaced apart from each other in a plate-thickness direction; a first connection member connecting the first substrate to the second substrate so that the same are displaceable in the plate-thickness direction; a second connection member connecting the second substrate to the third substrate so that the same are displaceable in a direction perpendicular to the plate-thickness direction; a first detection unit configured to detect relative displacement between the first substrate and the second substrate; and a second detection unit disposed extending in the plate-thickness direction between the second substrate and the third substrate for detecting relative displacement between the second substrate and the third substrate. The second substrate includes a thick portion in a region other than a mounting region of the second detection unit.

The application relates to the field of material organization control and heat treatment, in particular to a method for simulating white abnormal organization in the center of a thick section CrMo steel component. The specific process of the method is as follows: (1) smelting a steel ingot according to the composition of the thick section CrMo steel component, and forging the steel ingot into a test block; (2) controlling the segregation state of the test block through high-temperature diffusion annealing; (3) confirming that the test block reaches an ideal segregation state by using an electron probe (EPMA); (4) processing the test block into a standard Gleeble sample, and obtaining grain sizes consistent with the white abnormal organization and the surrounding organization in the Gleeble thermal simulation testing machine through heating parameter control; and (5) simulating the white abnormal organization in the Gleeble thermal simulation testing machine through cold speed and stress control. The application can well simulate the white abnormal organization in the center of the thick section CrMo steel component.

The application provides a 450MPa-grade super-thick-section high-nickel low-temperature cast steel and a heat treatment process thereof, and relates to the technical field of cast steel materials.The chemical components of the cast steel are as follows in terms of percentage by weight: C: 0.01%-0.05%; Si: ≤0.20%; Mn: 0.3%-0.7%; Ni: 9.5%-10.5%; Cu: 0.1%-0.3%; S: ≤0.010%; P: ≤0.015%, and the balance is iron Fe and impurities.The cast steel has good weldability, the maximum casting wall thickness can reach 1000mm, has good uniformity, the yield strength is not lower than 450MPa, and the impact absorption energy at-60 DEG C is not lower than 165J, and can be used in the fields of large ship hull structures, ocean engineering, mines, power and mechanical engineering and the like which have high requirements on the strength and thickness of cast steel.

The application provides a kind of thick section composite compression performance test method and test device, it is related to test or analysis material technical field, including the following steps: design test piece size and determine working section length;Estimate failure load and calculate minimum friction load;Determine the groove parameter of netted groove, calculate the comprehensive friction coefficient of clamping surface and calibration correction, calculate minimum pre-tightening force;According to pre-tightening force, determine bolt diameter and tightening torque, and then determine test piece clamping length and total length;Prepare test piece and process netted groove, apply tightening torque in stages so that end face parallelism meets requirements;Apply axial compression load, collect load-displacement and load-strain data, calculate compression strength and compression modulus and determine failure mode;Real-time monitoring and abnormal early warning are carried out during testing.The problem that thick section composite compression performance test is prone to premature abnormal failure is solved, and its compression strength and compression modulus can be accurately and reliably obtained.

The application provides a cross-duct thermocouple type temperature sensor, and belongs to the technical field of sensors, comprising a armored thermocouple installed in an inner duct, a special-shaped armored cable for transmitting signals in the inner and outer ducts, and a stepped armored cable in the outer duct, which are sequentially connected; the stepped armored cable comprises a stepped shell, a bushing and a cable; the stepped shell comprises a first shell and a second shell connected with each other, the first shell and the second shell are sleeved on the cable, the bushing is arranged between the second shell and the cable, a plurality of bushings are arranged in parallel along the axial direction of the cable, and gaps are arranged between adjacent bushings. The first shell comprises a first section, a second section and a thick section designed in one piece, the thick section is located between the first section and the second section, the second shell is cylindrical, the second shell is sleeved on the second section, and the length of the second shell is greater than the length of the second section. The application improves the structural stability and signal transmission reliability, and has the characteristics of light weight.

The invention relates to a device (10) for connecting a pipeline (11) of a refrigerant circuit to a counterpart (50), said device comprising an end section (13) of the pipeline (11) and the counterpart (50), wherein the pipeline (11) comprises a first free end (12) and the end section (14) is arranged at the first end (12). The pipeline (11) comprises a thickened portion (14) in the end section (13), wherein the thickened portion (14) comprises a first contact surface (20) on a first side (15) in the longitudinal direction (13a) of the end section (13). The first contact surface (20) is arranged at the first end (12) of the pipeline (11), wherein the first contact surface (20) has the shape of a section (21) of a first sphere having a first radius (22), wherein the thickened portion (14) comprises a second contact surface (30) on a second side (16) in the longitudinal direction (13a), and wherein the second contact surface (30) has the shape of a section (31) of a second sphere having a second radius (32).

The invention provides application of a modified resin composite repair material in damage repair of a wind power blade composite material. The modified resin composite repair material comprises a modified resin material and a UV isolating membrane layer compounded on the surface of the modified resin material, the modified resin material comprises resin, a photoinitiator and a microwave absorbent. The invention further provides a rapid repairing method for the wind power blade composite material combining ultraviolet light and microwave synergistic curing, repairing is carried out through the synergistic effect of a multifunctional resin system and a double-source time-sharing curing process, the limitation of traditional UV curing in a low-temperature environment and thick section repairing is solved, deep layer-surface layer synchronous rapid curing is achieved, and the service life of the wind power blade composite material is prolonged. And the uniformity and the mechanical property of the repaired interface are ensured. According to the method, the depth limitation (20 mm or above) of a single curing mode is broken through, the repairing efficiency is improved by 50% or above, the method adapts to the low-temperature construction environment of-20 DEG C, and an innovative solution is provided for on-site rapid repairing of large composite components.

The invention relates to a molding method without a sand box based on sand mold 3D printing, and relates to the technical field of casting molding, a 3D printing sand mold is longitudinally split into a plurality of parts, the outer side wall of a bottom sand mold is thickened, locking grooves are designed in the thickened parts of the two symmetrical outer side walls of the bottom sand mold, and each locking groove comprises a vertical section penetrating through the top surface of the bottom sand mold; the middle part of the limiting section is connected with the bottom end of the bottom sand mold; a box tightening rod of which the bottom end is matched with the shape of the locking groove is arranged in each locking groove, and a box tightening frame is arranged above the top sand mold; and the top ends of all box tightening rods penetrate through a box tightening frame and then are screwed with box tightening nuts in a threaded mode, the bottom sand mold, the top sand mold and all the middle sand molds are locked into a combined casting mold, and therefore the problems that under the scene that a sand box capable of completely covering the sand mold does not exist, the 3D printing sand mold is difficult to assemble, the sand box capable of completely covering the sand mold can increase the sand mold manufacturing cost, and the sand mold manufacturing cost is reduced are solved. And the manufacturing period is prolonged.

The invention relates to a system for immobilising a closing cap for containers, intended for a closing cap comprising a lower ring (1) and an upper cap (2), the upper cap (2) and the lower ring (1) being connected by means of two flexible extensions (3). The system comprises a projection (20) protruding from the circumferential rim of the upper cap and a thickened portion provided between the two flexible extensions (3) of the lower ring, which is vertically aligned with the projection (20). The thickened portion comprises a section having a substantially wedge-shaped cross-section defining an upper surface and an inclined lower surface with a rounded edge. The projection (20) and the thickened portion (11) are dimensioned such that the projection (20) can come into contact with the inclined lower surface of the thickened portion, the upper cap (2) assuming an angle of between 180° and 210° in relation to the lower ring (1), when in a folded-down position.

A glass substrate includes a thin portion having a first surface and a second surface opposed to the first surface, a thick portion having a first surface and a second surface opposed to the first surface and having a sheet thickness t3 that is larger than a sheet thickness t2 of the thin portion, a connection portion having a first connection surface and a second connection surface, the first connection surface connecting the first surface of the thin portion to the first surface of the thick portion, the second connection surface connecting the second surface of the thin portion to the second surface of the thick portion. The first connection surface has a curvature radius of more than or equal to 400 μm.

An insulating cover (5) includes: a cylindrical outer peripheral cover section (5a) that covers an outer peripheral surface (1a) of an outer ring (1); a pair of chamfer cover sections (5b) that have an arc-shaped cross section and cover a pair of chamfer sections (1b) of the outer ring (1); and a pair of end surface cover sections (5c) that cover a pair of axial end surfaces (1c) of the outer ring (1). Thick sections (8) that circumferentially extend in an annular shape and have a thickness greater than the thickness of the outer peripheral cover section (5a) at an axially central position are formed at both axial ends of the outer peripheral cover section (5a).

The invention discloses a device for preventing uneven section rolled steel from being bent on a cooling bed, and relates to the technical field of rolled steel production, the device comprises an air cooling mechanism and a monitoring mechanism, the air cooling mechanism is provided with a plurality of air injection pipelines, and the air injection pipelines are arranged at intervals in the running direction of the rolled steel on the cooling bed; nozzles of the air injection pipelines face the thick-section part of rolled steel, the air injection pipelines are arranged on the inner side and the outer side of the thick-section part of the rolled steel, and control valves are arranged on the air injection pipelines; the monitoring mechanism is arranged above the cooling bed right opposite to the rolled steel, the monitoring mechanism is electrically connected with the control valves, and the monitoring mechanism can correspondingly control the opening degree of the control valves on the air injection pipelines according to the bending condition of the rolled steel. The air cooling mechanism is used for carrying out forced air cooling on the thick section part of rolled steel, and the detection mechanism capable of monitoring the bending condition of the rolled steel in real time and correspondingly controlling the opening degree of the control valve on the air injection pipeline is arranged so as to control the bending amount of the rolled steel. The invention further discloses a method for preventing the non-uniform section rolled steel on the cooling bed from being bent.

The utility model discloses a rolling guide and guard device with a buffer adjusting mechanism, which relates to the field of rolling guide and guard devices, and comprises two convex mounting plates, a plurality of support plates are symmetrically arranged on opposite sides of the mounting plates, rectangular moving grooves and circular moving grooves are formed in the surfaces of the mounting plates, bottom plates are arranged in the rectangular moving grooves, and a buffer adjusting mechanism is arranged on the bottom plates. A spring gasket is arranged between the bottom plate and the supporting plate, when materials enter and make contact with the buffer plates, the buffer plates deform, due to the fact that the thicknesses of the buffer plates are different, the buffer plates making contact with the materials initially are large in thickness, high in hardness and not prone to deformation, the materials making contact with the thick portions of the buffer plates are limited, and resistance is increased; and the whole buffer plate is of a plate-shaped structure, the contact area between the buffer plate and the materials is large, the materials cannot bounce when passing through the uneven positions, and it is guaranteed that the surfaces of the materials cannot be damaged after the materials pass through the buffer plate.

This invention provides a method for manufacturing cylindrical bodies that offers excellent joint quality at the butt joint, by enabling the formation of a reinforced section specifically at the end when joining the butt joints of long workpieces formed by roll forming. [Solution] In the bending step, a roll is applied to bend the end of the workpiece 1 in the out-of-plane direction, forming a curved portion where the end is bent out of the plane (Figure 15(a)). Subsequently, in the thickening step, a roll is applied to push the curved portion in the in-plane direction, forming a thickened portion where the end is deformed out of the plane (Figure 15(b)). As a result, the material expands out of the plane in the in-plane range corresponding to the curved portion, thereby forming the thickened portion.

The invention relates to high-hardenability super-thick-section flat steel for a stabilizer bar torsional spring and a manufacturing method of the high-hardenability super-thick-section flat steel, and belongs to the field of iron-based alloys. The steel comprises the following chemical components in percentage by mass: 0.30 to 0.40 percent of C, 0.25 to 0.40 percent of Si, 0.80 to 1.00 percent of Mn, 1.60 to 2.00 percent of Cr, less than or equal to 0.015 percent of P, less than or equal to 0.010 percent of S, 0.20 to 0.30 percent of Mo, 0.10 to 0.20 percent of Ni, 0.05 to 0.10 percent of Nb, less than or equal to 0.08 percent of Cu, 0.10 to 0.20 percent of V, 0.005 to 0.030 percent of Al, less than or equal to 0.0015 percent of O, less than or equal to 0.010 percent of N and the balance of Fe and inevitable impurity elements. The hardenability of the flat steel reaches J50 / 59-20, and the flat steel is suitable for manufacturing the stabilizer bar piece torsion spring with the section thickness specification of 25-40 mm and used for meeting the design requirements of the stabilizer bar piece torsion springs of medium and heavy commercial vehicles in the aspect of high stress.