27 results about "Material Stretched" patented technology

The invention relates to the technical field of composite material testing, in particular to a recycling method and device for composite material tensile fragments, and the method comprises the steps that the bottom of a protective cover is adjusted to a preset inclination angle through an angle adjusting mechanism; covering a protective cover outside a clamping block for clamping the composite material in the tensile test device, so as to collect fragments generated in the tensile process of the composite material through the protective cover; the fragments in the protective cover are blown to the bottom of the protective cover through a plurality of air injection assemblies; and the fragments at the bottom of the protective cover are adsorbed through the movable suction cup and transferred to a preset recycling area outside the protective cover. According to the technical scheme, splashing fragments can be blocked through the protective cover, the fragments are guided to fall to the bottom of the protective cover in a concentrated mode, meanwhile, the fragments attached to the side wall of the protective cover and clamped in the grooves of the clamping blocks are blown through the air injection assemblies, and the collection efficiency of the composite material tensile fragments is improved.

The utility model discloses mechanical stretching stamping equipment for an aluminum extrusion part, which relates to the technical field of aluminum extrusion part production and comprises a fixed mounting base plate, a stamping die plate is detachably mounted at the top end of one side of the fixed mounting base plate, and a stretching plate is fixedly connected to the top end of the side surface of the fixed mounting base plate. The stamping die disc is directly mounted on the fixed mounting base plate in a buckled mode, the aluminum materials stretch into the fixing frame through the feeding arrangement groove, the position, in the fixing frame, of the threaded extrusion rod is rotated by rotating the top disc, and the aluminum materials are extruded and fixed through the extrusion disc; the two sides clamp and fix aluminum materials at the same time, the stretching driving motor controls rotation of the threaded driving rod, so that the sliding adjusting base plates are directly controlled to slide at the top end in the stretching disc to adjust the positions, and the distance between the sliding adjusting base plates on the two sides is adjusted, so that stretching operation of the aluminum materials can be achieved.

The invention provides a metal material tensile mechanical testing device, and belongs to the technical field of mechanical testing. The problems that an existing clamping structure is complex, and the sample clamping process is tedious in operation are solved. According to the metal material tensile mechanical testing device, tensile testing assemblies slidably arranged on guide columns are arranged above and below a workbench, a rectangular groove is formed in the front side wall of the middle of the workbench in the width direction of the workbench, and scales are arranged on the portion, located on one side of the rectangular groove, of the upper surface of the workbench in the length direction of the rectangular groove; a front pressing block and a rear stopping block which can slide front and back are arranged in the rectangular groove, and the front pressing block can move out of the rectangular groove from a front end opening of the rectangular groove. The stretching test assembly comprises a stretching body, a containing groove is formed in the middle of the end, facing the workbench, of the stretching body, and clamping limiting blocks capable of sliding in the left-right direction are arranged at the end and located on the left side and the right side of the containing groove. The structure solves the problems that the clamping structure in the device is complex and the sample clamping process is tedious to operate.

The utility model discloses a face guard leather material positioning fixture structure relates to face guard production technical field, including the first frame edge and second frame edge of symmetrical setting, and the second frame edge is installed in the both sides of first frame edge. First frame edge contains pedestal, and the upper portion slidingly connected slider of pedestal, and first frame edge and slider top all are equipped with the positioning boss column, for fixed face guard leather material. The top of pedestal is equipped with the limit boss and limit passage, and the passage is embedded with the dowel, and the dowel is connected with slider and is externally equipped with spring, and the both ends of spring respectively abut the dowel and the step protruding in the passage, realizes the buffer. The slider slides in the slide, and its tail end is equipped with second stop lug, and the first stop lug of the top of pedestal cooperates and restricts the sliding range. The cavity in the middle part of slider and slide jointly promote the sliding stability. This structure when face guard leather material forming, through the slider displacement relief leather material stretch, reduce the wrinkle, the leakage, promote face guard finished product quality and production efficiency.

A kind of anti-wave floating structure and the breakwater, protection system and offshore platform comprising it, the floating structure includes floating structure unit and connecting unit, the floating structure unit includes a plurality of anti-wave floating thick plate combination, it is a columnar structure in length direction, columnar structure cross section shape is triangle, trapezoidal, rectangular, H, Y etc., the anti-wave floating thick plate includes thick plate body, reinforcing rib and protrusion;Two sides of the thick plate body are equipped with water-permeable hole, the protrusion is stretched or bent by the HDPE material of water-permeable hole position Forming;The reinforcing rib is the long strip structure made of HDPE thick plate, the reinforcing rib is fixedly connected with hollow fixing hole in the protrusion;By the arrangement and combination of multiple groups of the floating structure unit in the water surface needing protection and the connection anchoring, the problems of poor anti-wave performance, low overall structural strength, high construction, installation and operation and maintenance cost of traditional offshore floating structure are solved.

The invention belongs to a plastic processing technology, and relates to a forming method for improving the cementing property of a titanium alloy paddle wrapping piece. The method is suitable for forming the non-uniform-section inverted-V-shaped narrow-cavity integrated titanium alloy wrapping piece with the torsion angle, and solves the problems that in the prior art, the requirement for the bonding condition of the titanium alloy blade wrapping piece is high, the roughness uniformity and deformation are difficult to guarantee through sand blasting after the narrow-cavity characteristic is formed, and the like; on the premise of meeting the material deformation amount required by hot forming, control over the roughness of material stretching in the hot forming process, material corrosion in the acid pickling process and the like is guaranteed, the roughness uniformity of the bonding face of the blade wrapping piece is improved, and the bonding success rate and bonding uniformity of the blade wrapping piece are improved.

The application provides a method for evaluating the cold-rolling workability of high-silicon non-oriented silicon steel and a production method of high-silicon non-oriented silicon steel. The evaluation method is as follows: after normalizing, rectangular tensile samples are taken from the edge and middle of the steel coil along the plate width; the samples are processed into samples with a width of b and a length of l0; the edge and middle rectangular tensile samples are respectively placed on a material tensile testing machine for tensile testing until the samples are broken, and the actual length of the samples when broken is recorded as l 边 and l 中 , and i=(l 边 -l0) / (l 中 -l0)×100% is calculated; the cold-rolling workability of the high-silicon non-oriented silicon steel is evaluated according to the calculated i value. When i is greater than or equal to 75%, the high-silicon non-oriented silicon steel can be smoothly produced by cold rolling; when 75%>i≥60%, the cold-rolling process needs to be optimized and the auxiliary cold-rolling process is used; when i is less than 60%, the cold-rolling production cannot be directly and smoothly completed, and the edge needs to be trimmed.

The present invention relates to a test assembly for material tensile shear performance testing, the test assembly comprising: a loading disc; and a clamp, the clamp comprising an upper end clamp and a lower end clamp, the upper end clamp and the lower end clamp clamping an edge portion of the loading disc from above and below respectively via respective clamping slots, the clamping slots of the clamp being shaped to fit the edge portion of the loading disc such that relative movement of the clamping slots and the edge portion is prevented when the clamp is clamped and the edge portion is allowed to slide along the clamping slots and the loading disc is allowed to rotate when the clamp is unclamped.

The utility model provides a tensile strength testing device for a high-temperature pipeline material, which is characterized in that a moving structure, a fixed structure and a driving structure are respectively arranged on a base, the moving structure is arranged on one side of the base and can slide relative to the base, and the fixed structure is arranged on the base. The fixing structure and the moving structure are arranged on the same side of the base, the fixing structure is connected with the base, the moving structure is pushed by the driving structure to move to achieve stretching, in addition, a fixing assembly is further arranged, the fixing assembly comprises an inclined press-fit module, and the inclined press-fit module is connected with the fixing structure. The inclined pressing module is used for gradually increasing the pressing force during stretching, the moving structure and the fixed structure are provided with the fixing assembly used for fixing a pipeline sample, and in the stretching process, due to the fact that the inclined pressing module gradually increases the pressing force on the pipeline sample, the pipeline sample is prevented from falling off; the problem that a pipeline sample is prone to falling off in the stretching process is solved, and the beneficial effects of being safe and stable are achieved.

The invention belongs to the technical field of material stretching testing, and particularly relates to an axial stretching device for a workpiece with internal pressure and a testing method. The axial stretching device for the workpiece with the internal pressure comprises a test tool used for clamping the workpiece, wherein the test tool comprises a baffle guide rail; the first baffle is fixedly arranged on the baffle guide rail; the second baffle plate is movably arranged on the baffle plate guide rail, a workpiece to be tested is arranged between the first baffle plate and the second baffle plate, and the workpiece to be tested is connected with a pressure supply system; a tension sensor is arranged between the first baffle plate and the second baffle plate, and after the second baffle plate moves relative to the first baffle plate until the workpiece to be tested can be pre-tightened, the tension sensor is zeroed.

The application provides a biaxial stretching device for material stretching experiment, and relates to the field of load test benches, which comprises a base, a solid propellant arranged on the base and used for bearing the solid propellant, a plurality of sliding rails fixed on the base and arranged radially around the solid propellant, a plurality of sliding blocks respectively slidably connected to the sliding rails, a plurality of push rods, the top end of each push rod is movably connected to a bearing table, the bearing table is used for bearing downward pressure load, the other end of each push rod is respectively pivotally connected to each sliding block, and each stretching assembly has a chuck, each chuck is used for clamping the solid propellant from different directions. Through the limiting effect of the first speed limiting device and the second speed limiting device, the moving speed of the first chuck and the second chuck is different from the moving speed of the third chuck and the fourth chuck, that is, four different stretching loads can be applied to the solid propellant from four directions, so that the demand of stretching test can be met.

This invention belongs to the field of material mechanical property testing technology, and relates to a SiC f A high-throughput testing fixture and method for tensile proportional limit of SiC composite materials is presented. For small-sized Y-shaped end specimens, a corresponding fixture is designed to connect multiple specimens end-to-end, and the self-locking mechanism between the specimens and the fixture effectively transfers the testing machine load to the gauge length of each specimen. The tensile stress on each specimen's gauge length is determined through stress analysis, considering the fixture's self-weight. The tensile strain of each specimen is determined based on the average value of strain gauges attached to the front and rear surfaces of the specimen's gauge length during loading. Multiple SiC composites can be tested simultaneously in a single tensile loading operation. f The tensile stress-strain curve of SiC composite specimens is tested to determine the tensile proportional limit and tensile modulus. This greatly improves experimental efficiency and enables the determination of SiC... f High-throughput testing of the tensile proportional limit of SiC composite materials can ensure precise alignment of the specimen with the loading line of the testing machine and eliminate data dispersion sources related to specimen loading.

The invention provides an engineering material tensile experiment strain measurement method and a related device, and belongs to the technical field of engineering experiments. The method comprises the steps of obtaining an image in an engineering material stretching process; performing image segmentation on the image in the stretching process of the engineering material to obtain contour information of the engineering material; performing feature point matching on the contour information of the engineering material to obtain displacement change information of feature points on the surface of the engineering material in the stretching process; and obtaining a local strain measurement result of the engineering material based on the displacement change information of the feature points on the surface of the engineering material in the stretching process. The problem that the accuracy of strain measurement of the tensile experiment of the engineering material is not high is solved.

The invention relates to the technical field of material tensile detection auxiliary devices, in particular to a tensile detection auxiliary device for a new butyl rubber material, which comprises a C-shaped frame and a fixing rod, the fixing rod is fixedly connected to the inner side wall of the C-shaped frame, and two shells are slidably connected to the fixing rod. Through cooperation of the correction blocks, the cylinder, the fixing block and other structures, the two correction blocks extrude the rubber test standard sheet, so that the rubber test standard sheet slides in along the end face of the shell, the fixing block and the cylinder are matched, when the rubber test standard sheet is placed, the bottom end of the standard sheet is fixed, and the bottom end of the standard sheet is fixed through the fixing block and the cylinder. The stress direction of the standard sheet and the direction of a tensile machine are completely kept consistent without any deviation through side surface and longitudinal three-point limiting, so that errors caused by sectional area change of the standard sheet due to inclined placement of personnel are avoided, and the accuracy of detection data is ensured.

Compositions, systems, and methods for use in the manufacturing process of foamed sheets. Such processes generally involve extruding a composition and stretching the extruded material on a molding mandrel. The ratio of the diameter of the molding mandrel to the diameter of the extruder die is called the "blow-up ratio" (BUR). The compositions, systems, and methods according to the embodiments relate to blow-up ratios in the manufacture of cellulose ester foamed sheets, with the aim of providing maximum sheet yield without rupturing the extruded material.

The present application relates to the technical fields of aluminum alloy manufacturing, and particularly relates to a kind of aluminum material tensile forming equipment.It includes chassis, the chassis is slidably connected with two clamps of symmetrical distribution, the chassis is equipped with lifting platform below, the chassis is equipped with the electromagnetic slide rail of symmetrical distribution, the electromagnetic slide rail of symmetrical distribution on the chassis is slidably connected with two electric sliding frames of symmetrical distribution, the electric sliding frame is fixedly connected with the first connecting frame of symmetrical distribution, the first connecting frame is slidably connected with the first sliding frame.The present application is reciprocated straightening to aluminum material by the first sliding frame, and it is stretched to aluminum material by two clamps, the first sliding frame is straightened to aluminum material from the middle to both ends of aluminum material, the uniformity of deformation amount in the process of aluminum material stretching is guaranteed, the probability that aluminum material is damaged due to the fact that excessive tension needs to be applied to both ends of aluminum material caused by the bending of the middle of aluminum material is reduced, and then the quality of aluminum material after stretching is guaranteed.

The utility model relates to stretching equipment technical field especially a titanium -aluminium composite material stretching device, including frame, be equipped with a pair of the support of sliding setting on the frame, be equipped with the wedge groove on the support, be equipped with a pair of wedge clamp block in the wedge groove, the support body on the far end of two support is equipped with the drawing traction spare of removal respectively, the one end of drawing traction spare close to wedge clamp block has annular groove, the one end close to drawing traction spare on every wedge clamp block passes through a connecting piece and is connected with drawing traction spare, for a kind of stretching device, can realize to titanium -aluminium composite material and stretch, remove the stress generated in the composite process of titanium -aluminium composite material, after stretching, the crystal direction of titanium -aluminium composite material, material is consistent, can eliminate partial stress, improve the mechanical property of composite material, reduce the deformation of subsequent mechanical processing.

The invention relates to the technical field of tension measurement, in particular to a high-precision tension measuring device and method.The tension measuring device is provided with an adjusting assembly, the adjusting assembly comprises a protection cabinet, two sets of circulating pipelines are fixedly installed in the protection cabinet, and one ends of the two sets of circulating pipelines are both communicated with a protection box; and one side of the protection box communicates with a collection box, auxiliary assemblies are installed on the two sets of adjusting assemblies correspondingly, and the two sets of auxiliary assemblies comprise fans rotating in the protection box. The two groups of friction plates rub the cylindrical elastic plastic material in a reciprocating manner to promote the material to plastically flow, and the material flows to fill the sunken part due to stress concentration at the sunken part, so that the situation that the local stress of the cylindrical elastic plastic material is far higher than the average stress due to the sunken part on the surface of the cylindrical elastic plastic material is prevented; the deformation uniformity during the material stretching detection is influenced.

To provide a quantitative method for evaluating sealing materials, with the aim of selecting the optimal primer to ensure the long-term reliability of waterproofing joints in the exterior walls of buildings. [Solution] The method for evaluating the sealing material 10 includes: a first step of evaluating the adhesion between the adherend 11 and the primer 12, and the adhesion between the primer 12 and the sealing material 10, by movement testing of the test specimen 1 under different temperature conditions; a second step of determining the tensile stress as a mechanical property of the sealing material 10 by static tensile testing and determining the complex modulus of elasticity of the tensile deformation of the sealing material 10 by dynamic viscoelastic testing; a third step of obtaining a relationship diagram between the tensile stress of the sealing material 10 obtained in the second step and the complex modulus of elasticity of the tensile deformation of the sealing material 10; and a fourth step of determining the suitability of the primer 12 using the relationship diagram obtained in the third step, based on the adhesive peel strength of the primer 12 assuming the usage environment obtained from the first and second steps.

The invention relates to the technical field of copper bar machining, in particular to a multi-station combined machining die and a using method.The multi-station combined machining die comprises a punching unit which comprises a punching female die arranged on a lower die base and a punch arranged on an upper die base and coaxial with the punching female die in the height direction; the stretching unit comprises a hole flanging female die arranged on the lower die base and a hole flanging male die coaxial with the hole flanging female die in the height direction. Wherein the punching unit and the stretching unit are independently arranged, and are spaced from each other in the horizontal direction. The original integrated punching and drawing process is decomposed into two procedures of precise punching and independent hole flanging, so that hole edge burrs caused by material tensile fracture are fundamentally eliminated, the product quality is remarkably improved, and the subsequent grinding cost is saved. Punching force needed by the independent punching action is small and stable, the problems of strenuous vibration and impact of equipment are effectively solved, and the precision and structural integrity of the equipment are protected.

The invention provides an RUHPC test piece axial tension bearing capacity determination method considering a pouring mode and tensile surface section characteristics, and belongs to the field of test piece axial tension bearing capacity design and calculation. And in consideration of the tensile strain hardening capacity of the ultra-high performance concrete material, carrying out an axial tensile test of the integral casting reinforcement UHPC test piece without the initial defect. A groove with concentrated stress is introduced on the basis of an integral pouring RUHPC test piece without initial defects, and an axial tensile test of the integral pouring RUHPC test piece with the initial defects is carried out. The interface debonding strain value of the UHPC wet joint is smaller than the yield strain value of the steel bar, when the configuration of the section full-length steel bar is larger than a set value, the UHPC wet joint reaches the bearing yield strength before the steel bar, the tensile bearing capacity at the interface is independently borne by the steel bar, and the axial tensile test of the unreinforced segmented pouring RUHPC test piece is carried out. And when the configuration of the section full-length steel bars is insufficient, the steel bars cannot play the role of anchoring enhancement, the tensile strength calculation value of the test piece is controlled by the strength of the UHPC wet joint, and the axial tensile test of the steel bar reinforced segmental pouring RUHPC test piece is carried out.

The application provides a data processing method for extremely low temperature fracture toughness test, and the method comprises the following steps: step one, determination of material tensile property parameters; step two, calculation and correction of compliance; step three, calculation of crack length; step four, calculation of J integral; step five, construction of blunting line; and step six, correction of initial crack length. The method is suitable for extremely low temperature conditions, and can solve the problems of insufficient accuracy of key parameters obtained by a conventional data processing method, insufficient number of fitting points and insufficient reliability of fitting curves caused by a small effective area of fitting points, and the like. The new data processing method can improve the accuracy of key parameter calculation, effectively expand the range of the effective area of fitting points, and significantly improve the reliability of the fracture toughness test under the condition of extremely low temperature, thereby providing important support for the performance evaluation of materials under extremely low temperature, and the development and optimization of equipment processes.

The utility model relates to the field of building material testing devices, and discloses a clamp for a tensile test of a geotechnical material, which comprises a fixed seat, hydraulic devices are fixedly connected to two sides of the top of the fixed seat, a fixed plate is fixedly connected to the driving ends of the hydraulic devices, and an upper base is rotatably connected to the top of the fixed plate. A guide rail is slidably connected to the top of the fixing seat, a lower base is mounted at the top of the guide rail, supporting columns are fixedly connected to the lower base and the upper base, a rotating handle is rotatably connected to one side of each supporting column, a bolt is fixedly connected to one side of each rotating handle, and a clamping head is fixedly connected to one side of each bolt. According to the tensile test fixture, the bolt is moved downwards by rotating the rotating handle on the supporting column, the clamping head on one side of the bolt is driven to push the two clamping blocks to slide along the inner wall of the shell, the baffles are arranged on the two sides of the clamping blocks, the clamping blocks can be prevented from sliding out in the moving process, and therefore the clamping blocks can effectively fix a workpiece for a tensile test.

The present invention provides a method for measuring tensile and compressive elastic moduli based on a four-point beam bending test, taking into account the dual-modulus properties of materials. Solution: A four-point bending beam specimen with a height-to-span ratio of less than 1 / 6 is used, with both ends simply supported. A symmetrical longitudinal concentrated load is applied, placing the middle section in a state of pure bending stress. Strain gauges are attached to the top and bottom surfaces of the middle section of the specimen, or strain is measured using DIC technology. The position of the neutral layer is determined from the strain on the top and bottom surfaces, and the horizontal stress distribution at the central cross section is then described. The maximum horizontal compressive stress and tensile stress on the top and bottom surfaces are calculated using force equilibrium and moment equilibrium equations. Finally, the compressive and tensile moduli of the material are inverted from the measured compressive and tensile strains. This method allows for simultaneous measurement of the tensile and compressive moduli, is simple to operate, and has high measurement accuracy.

The invention discloses a tile increasing type radial forming drum and a tire secondary method forming process, and belongs to the technical field of tire forming equipment. The forming drum comprises a main shaft, a driving assembly and a tile block assembly, the tile block assembly comprises main tile blocks and secondary tile blocks which are alternately arranged at intervals in the circumferential direction of the main shaft, and concave-convex curved surface sliding guide structures which are always kept in sliding contact in the radial moving process are arranged on the adjacent side walls of the main tile blocks and the secondary tile blocks; the driving assembly comprises an inner sliding seat and an outer sliding seat which are respectively connected with the main tile block and the secondary tile block through a main connecting rod and a secondary connecting rod, and the inner sliding seat and the outer sliding seat are driven by the same driving source and do synchronous, same-direction and axial movement; the process comprises the steps of shrinkage preparation, material fitting, constant-speed swelling, secondary forming and demolding. The arc surface span is reduced by increasing the number of the tile blocks, and the concave-convex guide sliding structure and the layered synchronous driving are combined, so that the problem of non-uniform stretching of a tire body material is solved, and the tire forming quality and uniformity are improved.

A model construction method for evaluating tensile mechanical properties of polyelectrolyte grafted nanoparticle composite materials by molecular dynamics simulation belongs to the technical field of nanocomposite materials. The method obtains the internal stress tensor of the nanocomposite material by applying one-dimensional tensile strain to the polyelectrolyte nanocomposite material. In the simulation process, the strain and stress values of the system are output within a certain time interval, thereby ensuring the continuity and accuracy of the data. The core advantage of the application lies in that under the condition of accurately introducing long-range electrostatic interactions of the polymer system, not only can the one-dimensional stretching process of the polymer nanocomposite material be efficiently simulated, but also the key mechanical property parameters in the deformation process can be accurately extracted, greatly enriching the research means of material mechanical properties. Compared with the traditional experimental method, the present technology significantly reduces the research cost, and at the same time, avoids the inevitable external interference and uncontrollable factors in the experimental operation, thereby providing a more reliable, economical and efficient alternative solution for the mechanical property evaluation of nanocomposite materials. Therefore, the present application has significant value in promoting the scientific research and technical application of nanocomposite materials.

The utility model discloses a stretching and straightening machine for aluminum profile production, and relates to the technical field of aluminum profile stretching and straightening. A cylinder is fixedly mounted at one end of the first frame; a first straightener is movably mounted at one end of the first frame away from the cylinder; the first straightening machine comprises a movable frame; the roller is attached to the first frame body; a first electric push cylinder is mounted at the top of one end of the first straightening machine in a matched manner; a push plate is movably installed on a push rod of the first electric push cylinder and attached to the top of the first clamping plate. The two ends of a profile are effectively clamped and fixed through a first clamping plate at the end of a movable frame, a matched clamping plate at the end of a side plate and a second clamping plate, a first straightening machine is driven by an air cylinder to be away from a second straightening machine, and the second straightening machine is integrally away from the first straightening machine through a driving motor in the side plate; according to the sectional material stretching and straightening device, the stretching flatness of the sectional material can be guaranteed, the situation that the sectional material is bent is avoided, and the working quality of equipment is guaranteed.