82results about How to "Tensile stability" patented technology

The present invention provides a drawing machine of flake capable of improving the reliability and quality of the flake. The drawing machine of flake has annular link device pair; the annular link device pair is correspondingly installed at two ends on width direction of the thermoplastic flake and leads a plurality of equal-length links along the roughly closed route on the horizontal plane; the plurality of equal-length links are connected with each other; on one hand, the equal-length links extend like a curved ruler, and on the other hand, hold each end part of the flake; the annular link device pair transports the flake to the outlet from the inlet, synchronously stretches the flake, then returns to the inlet side so as to move; wherein, in the space of transporting the flake, the stretching area for stretching the flack has heater which is installed on the upper part of the flake and radiates heat to the flake, and parts which are formed by the thermal conductivity parts heated by receiving the heat from the heater and installed on the lower part of the flake.

The invention relates variable aperture tube making method and device, including tube end rotary forging and draw stretching. It first forges one end of the tube on the rotary forger into a smaller-aperture technical tube, which makes the stretching mould through to be clamped by the clamping module; using a hydraulic control system to drive clamping base and clamping module; inserting core rod with mould head in the copper tube to stretch by the stretching mould. It includes rotary forger and draw-stretching device. The clamping module, the stretching mould and the core rod makes up a stretching process line. The position of the core rod is adjustable and the stretching effect is good. The hydraulic control system is installed with travel switch to control stretching travel. It is applied to the control of thin-wall small-aperture copper tube and widely applied to cryogen pipeline in refrigerating industry.

The invention discloses a vertical guide rail automatic cloth conveying device for a transfer printing machine. The device comprises a cloth storage device, a headstock box, a cloth conveying device and a tailstock box, wherein a weft adjustment device and an overfeed device are arranged in the headstock box; the cloth conveying device consists of a vertical guide rail cloth flatly-conveying system and a fabric carrying device; an active pin miss device, an active cloth feeding device and two sets of tension detection devices are arranged in the tailstock box; the weft adjustment device is positioned on the rear lower side of the headstock box; the overfeed device is positioned in the middle of the headstock box and consists of an upper overfeed device, a lower overfeed device and a widthexpansion device; the vertical guide rail cloth flatly-conveying system comprises a vertical guide rail and a pin plate conveying chain and is used for supporting the two sides of a fabric; the fabric carrying device consists of a cloth carrying flat belt part and a rope-shaped cloth carrying belt part and is used for supporting the middle part of the fabric; the active pin miss device consists of an active pin miss wheel and an active pin miss roller and is used for stripping the fabric from the pin plate; the active cloth feeding device consists of an active cloth feeding roller, a drive motor and a speed reducer; and each set of tension detection device consists of a tension sensor and a tension roller.

The invention relates to an ultra-thick high temperature-resistant steel for a pressure vessel and a preparation method thereof. After smelting and refining, the steel is subjected to continuous casting, hot rolling, normalizing and tempering. The steel comprises the following controlled chemical components in percentage by mass: 0.08-0.15% of C, 0.15-0.40% of Si, 0.40-0.70% of Mn, 0.90-1.20% of Cr, 0.15-0.30% of V, 0.25-0.35% of Mo, at most 0.025% of P, at most 0.010% of S and the balance of Fe and inevitable inclusions. The preparation method provided by the invention comprises the steps of smelting, heating, rough rolling, finish rolling, normalizing and tempering. The invention has the characteristics of appropriate design and proportion of the chemical components, simple manufacturing process, large thickness dimension (80mm), good heat resistance, stable product performance and the like.

The invention discloses high-performance polypropylene prepared from methods of self-producing a nucleating agent and synthesizing an antioxidant. The high-performance polypropylene is used for processing a two-way stretch geogrid special material; a beta crystalline hexagonal honeycomb-shaped stable product is produced through a double-screw extruder under process conditions of a preset rotating speed, temperature and the like, and the product is excellent in performances including stable tensile strength, high compressive strength, high yield extensibility and the like. The method disclosed by the invention optimizes raw material proportion, so that the prepared grid special material is completely consistent with or better than national and industrial standards and shows strong economy and practicability.

The present invention discloses one heat treating process for aluminum alloy to obtain anitfatigue microstructure with high heat stability. The treating process for aluminum alloy plate includes the first solution treatment at 490-500 deg.c, and the subsequent artificial ageing treatment at 170-200 deg.c for 20-60 min. The heat treating process makes the Al-Cu-Mg alloy obtain reinforcing GPB structure in relatively large size, excellent antifatigue performance, delayed degradation of the antifatigue performance and anitfatigue microstructure with high heat stability.

The invention discloses a high-intensity damage-free type flexible roughened surface geomembrane and a producing method of the high-intensity damage-free type flexible roughened surface geomembrane, belonging to the field of production of a geomembrane. The high-intensity damage-free type flexible roughened surface geomembrane comprises a geomembrane body. The high-intensity damage-free type flexible roughened surface geomembrane is characterized in that the geomembrane body is in a monolayer calendaring membrane structure; and taper convex points are calendered on the upper surface and/or the lower surface of the membrane body. The main raw materials of the geomembrane comprise ethylene-alpha olefin copolymer, high-intensity polyethylene, high-pressure low-intensity polyethylene, antioxygen, ultraviolet light absorber and carbon black. Compared with the prior art, the high-intensity damage-free type flexible roughened surface geomembrane disclosed by the invention has the characteristics of simplicity in production technique, excellent performance index, and the like, can be widely applied to a railway anti-shock layer, a refuse landfill, a tunnel, a reservoir, a canal, a sewage treatment tank, a landscape lake and other environment-friendly anti-seepage projects, and has very good popularizing and applying values.

The invention relates to a muitlaxial tension test machine, which includes a mounting bench, a supporting part arranged thereon, an object board arranged on the supporting part, a plurality of fixed pulleys which are disposed uniformly and are arranged on the object board, a laser extensometer arranged on the mounting bench towards the object board, a connecting board fixedly connected to the mounting bench, a motor and a ball screw rod member arranged on the connecting board, a moving disk arranged on a force sensor, and a lifting mechanism which passes through the mounting bench and is fixedly connected to a screw rod in the ball screw rod member, a force sensor, a plurality of holding members arranged uniformly on the object board and steel ropes. The motor drives a nut in the ball screw rod member to rotate. The screw rod is fixedly connected to force sensor. The steel ropes are winded on the fixed pulleys and is connected to the moving disk and the holding members. The screw rod is driven by the motor to be reduced and applies a down-drawing force on the moving disk through the force sensor, so that the holding members are pulled correspondingly through the steel ropes, thereby achieving stable tension in multiple directions on a thin material. Because the moving disk applies tension on the holding members at the same time, force uniformity on thin material is ensured.

The invention discloses a pot stretcher, and belongs to the technical field of plate stretching equipment. The pot stretcher comprises a blank pressing cylinder (12) and a stretching cylinder (1), wherein a stretching mold (6) is arranged between the blank pressing cylinder (12) and the stretching cylinder (1); the stretching mold (6) comprises an upper blank pressing ring (602), a lower blank pressing ring (603) and a stretching head (605); the blank pressing cylinder (12) is arranged above the upper blank pressing ring (602) to push the upper blank pressing ring (602) to descend; the stretching cylinder (1) is arranged below the stretching head (605) to push the stretching head (605) to ascend. The pot stretcher is characterized in that the lower blank pressing ring (603) is mounted above an elastic support mechanism; after the upper blank pressing ring (602) is molded with the lower blank pressing ring (603), blank pressing force is compensated by the elastic support mechanism through deformation resilience. As the elastic support mechanism is adopted in the pot stretcher to compensate the blank pressing force, the pot stretcher has the advantages of being stable in compensation force and convenient to adjust.

The invention relates to the field of tension test machines, and discloses a two-way tension device with a large-range adjustable tension rate and a two-way tension method. The two-way tension devicecomprises a base, four tension mechanisms are arranged on the base, and each tension mechanism comprises a lead screw module, a tension module and a roller linear guide rail pair; the lead screw module is connected with the tension module, and the roller linear guide rail pair is connected with the tension module and the lead screw module. Each tension mechanism is provided with a tension and pressure sensor; two of the four tension mechanisms are oppositely arranged in the x direction, the other two tension mechanisms of the four tension mechanisms are oppositely arranged in the y direction,and the four tension mechanisms are arranged on the base in a crossed mode. The two-way tension testing machine is compact in structure, the uniaxial feeding speed is controlled through the two servomotors, the nut rotating type ball screw pair is matched, the tension rates in different ranges are achieved, and compared with a traditional two-way tension testing machine, the two-way tension testmachine has the advantages that the tension rates can be adjusted in a large range, tension is stable, and the control precision is higher.

The invention proposes a rectangular hollow copper wire coil tube with unequal wall thicknesses. The rectangular hollow copper wire coil tube with unequal wall thicknesses comprises a hollow tube, wherein the hollow tube has a rectangular cross section, and the thickness of a tube wall of a long edge of the hollow tube is different from the thickness of a tube wall of a short edge of the hollow tube. The rectangular hollow copper wire coil tube with unequal wall thicknesses, proposed according to the embodiment of the invention, is made of a moving core head used for the rectangular hollow copper wire coil tube with unequal wall thicknesses, an ultra-long wire copper tube can be obtained, a product has the characteristics of high size precision, smooth inner and outer surfaces, high voltage resistance, long length, large size and the like, a cooling effect can be improved, the smooth inner hole surface is difficult to get scaling, the working condition of a large-size machine set can be improved, and the service lifetime of the large-size machine set is prolonged.

The invention relates to a multi-directional tensile testing machine for thin material of LED decorative lighting. The multi-directional tensile testing machine comprises a driving mechanism, as well as a guide disc and a support part fixedly connected with each other, force application parts and a rotating disc arranged between the support part and the guide disc in a rotary manner, wherein a placement hole, a through hole and an accommodating hole communicated with each other are formed in the support part, rotating disc and guide disc respectively; multiple guide holes are formed in the rotating disc clockwise and radially around the axis of the rotating disc; multiple sliding grooves are formed in the guide disc radially around the axis of the guide disc; the force application parts comprise braces and sliding blocks connected with the braces in a rotary manner; the sliding blocks are arranged in the guide holes in a sliding manner; the braces are arranged in the sliding grooves in a sliding manner; the driving mechanism is in drive connection with the rotating disc. The driving mechanism drives the rotating disc to rotate to further drive the sliding blocks to slide along the guide holes, so that the braces slide along the sliding grooves, stable tension in multiple directions is performed on the thin material connected with the multiple braces, force applied to the thin material in multiple directions is balanced, and the accuracy for a tensile test to the thin material is improved.

The invention discloses a movable pile head steel bar automatic straightening device. The movable pile head steel bar automatic straightening device comprises a walking mechanism, a traction mechanism and a positioning straightening mechanism; the walking mechanism is arranged at the bottom and used for driving the traction mechanism and the positioning straightening mechanism to move; the traction mechanism is arranged on the walking mechanism; the traction mechanism is used for adjusting the traction angle according to needs and is driven to move up and down along the traction mechanism; and the positioning straightening mechanism is connected with the traction mechanism, arranged on a pile head steel bar to be straightened in an embracing mode and used for straightening the pile head steel bar. The movable pile head steel bar automatic straightening device has the advantages that the design structure is reasonable, traction and stretching are stable, double power drive is achieved, the safety performance is high, the movement is more convenient and rapid due to the adoption of a movable support, cooperation of other hoisting equipment is not needed during operation, the traction mechanism is used for adjusting and straightening, and self-driving power is also used for adjusting and straightening due to the adoption of hydraulic driving during adjustment, the operation speed is high, the stability performance is high, high in practicability and suitable for popularization and application, the safety coefficient of construction operation is high, the working efficiency is greatly improved, and the quality requirement and the safety requirement are met.

The invention discloses an intelligent numerical-control textile device for non-woven fabric. The structure of the intelligent numerical-control textile device for the non-woven fabric comprises a controller, a supporting device, a fabric coiling rod, a manufacturing platform, a thread conveying roller, a yarn guiding frame, a tensioning device, a roller, an air blowing device and a machine body.When the intelligent numerical-control textile device for the non-woven fabric is in use after being improved, separating rotating rods convey short textile fiber into a guide pipe, moving wheels rotate, the tension of the short textile fiber is controlled, a clamping hoop is buckled with a buckle block through telescopic rods, so that a thread guiding groove is fixed to a certain tension, it is guaranteed that the stretching force of the short textile fiber during paying-off is stable, and the textile quality and efficiency are improved; suction tubes assist an air suction element to suck inbatting, an air draft piece and dust suction pieces suck the batting into shells, clearing brush pieces brush the batting to filter nets in a unified manner, the batting is machined and processed through the filtering nets, a large amount of batting and dust are separated and stored in dust storage cavities, so that the physical health of work personnel in a production workshop is protected, and the service life of the intelligent numerical-control textile device for the non-woven fabric is prolonged.

The invention discloses a greenhouse film stretching device and belongs to the technical field of film processing. The device comprises a film conveying mechanism, a supporting frame assembly, a stretching adjusting mechanism, grabbing mechanisms and edge cutting mechanisms. According to the greenhouse film stretching device of the invention, a film clamping mode is adopted, so that the phenomenonthat a film is unevenly pulled and stressed during stretching is avoided, the film is prevented from being damaged due to stress concentration; and the unstretched edge part of the film can be automatically cut off after the film is stretched. The supporting frame assembly is arranged on the film conveying mechanism. The stretching adjusting mechanism is connected with the supporting frame assembly in a matched mode. The number of the grabbing mechanisms is two. The two grabbing mechanisms are symmetrically arranged on the supporting frame assembly. The two grabbing mechanisms are both connected with the stretching adjusting mechanism. The number of edge cutting mechanisms is two. The two edge cutting mechanisms are symmetrically arranged on the film conveying mechanism. The two edge cutting mechanisms are both connected with the stretching adjusting mechanism in a matched mode. The stretching adjusting mechanism drives the two grabbing mechanisms to clamp a film, and meanwhile the stretching adjusting mechanism drives the two edge cutting mechanisms to cut the film.

The invention discloses a heat treatment technology for improving the ageing impact toughness of austenitic heatproof steel for preparing boiler pipes. The technology comprises the following steps: atfirst, subjecting austenitic heatproof steel to a solid solution treatment at a solid solution temperature, cooling the solid solution temperature to 600 to 700 DEG C at a speed of 1-5 DEG C/min, andfinally cooling to the room temperature, wherein the austenitic heatproof steel is HR3C alloy in a delivery state. On the premise that the tensile performance of alloy is not reduced, a simple heat treatment technology is adopted to improve the impact toughness of alloy after long time ageing, and the safety coefficient of HR3C alloy during the operation period of a power station boiler is increased.

The invention relates to an intelligent hogging moment tensioning device for a bottom die, in particular to an intelligent hogging moment tensioning device for a bottom die, which comprises an expandable mounting frame, and a power supply and a motor are arranged on the mounting frame. The power source and the motor are both electrically connected with the central controller, a tensioning jack capable of ascending and descending is arranged between the mounting frame and the base, a movable foot and a telescopic fixed foot are arranged below the base, a working opening is formed in the base, and an automatic working door is arranged on the working opening. In the first working state, the working door is opened, the tensioning jack penetrates through the working door to move downwards, in the second working state, the working door is closed, the tensioning jack is placed on the working door, and the tensioning jack is arranged in the device, so that the overall tensioning effect can be guaranteed in the operation process of the bridge bottom die, meanwhile, the tensioning stability of the mounting frame is guaranteed, and the service life of the mounting frame is prolonged. And under the action of the fixing feet, the tensioning effect is guaranteed to the maximum extent.

The invention discloses a reverse osmosis membrane rolling device which comprises a base and a membrane fixedly mounted on a rolling cylinder, two mounting rods are mounted on the base through a moving mechanism, a driving motor is fixedly mounted on one of the mounting rods, the output end of the driving motor is fixedly connected with a driving rod, the driving rod is rotationally connected with the corresponding mounting rod, the other mounting rod is rotationally connected with a rotating rod, fixing rods are fixedly mounted at the ends, close to each other, of the rotating rod and the driving rod, moving rings are slidably connected to the two fixing rods, and fixing mechanisms matched with the rolling cylinder are arranged on the two fixing rods. The device has the advantages that the winding cylinder is simple and convenient to disassemble and assemble on the device, the operation difficulty can be effectively reduced, and the production efficiency is improved to a certain extent; meanwhile, the overall tension of the membrane can be kept stable in the rolling process so that the use effect of the rolled reverse osmosis membrane is ensured.