44 results about "Scratch test" patented technology

The present application relates to precision machining technical field, especially for the critical depth prediction method of ultrasonic ELID compound grinding considering on-line electrolysis, including the following steps: S1: according to the process that single abrasive grain of grinding wheel in ultrasonic ELID compound grinding is exposed to the increasing radius of falling off, change curve is established, and single abrasive grain radius change model in ultrasonic ELID compound grinding is established;S2: selecting diamond abrasive grain of any radius on the above curve carries out ultrasonic ELID variable depth scratch test, and the brittle plastic transition critical depth of material is obtained;S3: repeating S2, using different radius abrasive grain carries out test, and the change curve of brittle plastic transition critical depth with the radius of abrasive grain is established and formula is fitted;S4: the model in S1, S3 and relationship are integrated, and the critical depth prediction model is established.The present application finally obtains the critical depth prediction method of ultrasonic ELID compound grinding considering on-line electrolysis, can adjust the grinding depth in grinding in real time, realizes the ductile region grinding of maximum depth of cut.

This invention provides a test specimen and a method for testing the performance of a cutting tool coating. The specimen includes a specimen substrate and a coating covering the surface of the substrate. The surface of the specimen includes an outer peripheral surface, a first plane, and a second plane. The outer peripheral surface and the second plane intersect to form an edge. The edge is used for brushing tests, and the first plane is used for scratch or indentation tests. The method for testing the performance of the cutting tool coating includes performing an indentation or scratch test on the first plane and a brushing test on the edge. The specimen of this invention can be applied to various tests, and multiple tests can be performed on the same specimen, thereby reducing the number of specimens required in the research of cutting tools, thus saving testing costs and improving testing efficiency.

The invention provides a gradient layer mechanical property evaluation method of a nano material. The method specifically comprises the following steps: (1) preparing a sample for gradient layer mechanical property evaluation; (2) performing a scratch test along the gradient direction of the depth layer of the sample to obtain scratch parameters at different positions in the gradient direction; and (3) determining the change of the mechanical property of the gradient layer along the gradient direction based on the scratch parameters at different positions in the gradient direction. The scratch test causes little damage to the material, and especially in a low-load mode, the near-surface performance of the material can be reflected more truly; and a single test is generally completed within several minutes, so that the test efficiency is greatly improved, and the research and development screening speed is increased.

A scratch resistance testing device for decorative panels relates to the field of PET film-faced artificial board testing technology. It includes a test platform, a sliding mounting frame on the base, and a partitioned pressure testing component within its groove. This component includes a movable seat, a pressure testing frame, a support rod, a support plate, and a scratching head. It works in conjunction with a pressure-dividing return assembly to achieve segmented pressure scratching. A telescopic scraping component is installed in the bottom through-hole of the lower empty-stroke scraping component for chip removal, and a negative pressure impurity removal component is also provided. The scheme includes three pressure blocks that cooperate with the pressure testing frame, allowing the scratching head to automatically complete three segments of scratches with different pressures during continuous movement. Blank intervals are left between segments to avoid interference, enabling multiple tests per scratch and segmented comparison. Multiple elastic telescopic scraping heads remove debris, fibers, and dust adhering to the scratching head in the blank areas. Simultaneously, an elastic pull rope and piston drive a negative pressure cylinder to precisely extract residue from within the scratch, avoiding obscuring the true morphology. This ensures the efficiency, consistency, and accuracy of the scratch resistance testing of PET film-faced artificial boards.

The invention discloses a prism film scratch testing device and a prism film scratch testing method, and belongs to the field of prism film testing. The device comprises a positioning rod fixedly arranged on the surface of a machine body, the positioning rod and a clamping rod are symmetrically arranged relative to a steel belt, two positioning blocks sliding oppositely are arranged on the surface of the positioning rod, arc-shaped blocks are fixed to the surfaces of the positioning blocks, and the arc-shaped blocks can make contact with the ends of media on the two sides of a prism film to guide the media to move to specific positions. Limiting rods with clamping assemblies are arranged on the surfaces of the two positioning blocks, horizontal scales are arranged on the surfaces of the limiting rods, it can be guaranteed that the edges of the positioning blocks are parallel to the edge of the steel belt according to the horizontal scales, and meanwhile standard rods are arranged on the surfaces of the limiting rods and the surfaces of the clamping rods. The limiting rod and the clamping rod can clamp the prism film, the placing state of the prism film can be visually known through the standard rod, and the relative position of the steel belt and the prism film can be rapidly judged; and energy and time required by a prism film and a medium placement stage are reduced.

The present application belongs to the technical field of coating scratch test, and particularly relates to a non-planar scratch damage test device, which comprises a mounting frame, a bearing groove, a bearing frame, a lifting frame, a discharging block and an intercepting piece installed on the mounting frame, the bearing groove is obliquely arranged, the bearing frame is located at one end of the bearing groove, the lifting frame is vertically slidably installed on the mounting frame and located above the bearing frame, a lifting mechanism is installed between the mounting frame and the lifting frame, a rotating mechanism is installed on the lifting frame, a test needle for abutting the cylindrical measured piece with a certain pressure is installed on the lifting frame, the discharging block is movably installed on the mounting frame and used for pushing the cylindrical measured piece after the test is completed to fall from the bearing frame, and the intercepting piece is movably installed on the bearing frame and used for avoiding the new cylindrical measured piece from sliding off the bearing frame due to the motion inertia after the new cylindrical measured piece slides onto the bearing frame. The purpose is to solve the problem of low test efficiency caused by the structural defects of the existing test device.

The utility model discloses a washable water silk ribbon wear resistance detection device which comprises a detection table, silk ribbon fixing mechanisms are installed on the two sides of the top of the detection table, a supporting frame is arranged between the two silk ribbon fixing mechanisms, an electric sliding rail is installed between the supporting frame and the detection table, and a driving piece is fixedly installed on the top of the supporting frame. The output end of the driving part penetrates through the supporting frame and is connected with a detection mechanism, the detection mechanism comprises an installation plate, a friction detection assembly and a scratch detection assembly, the friction detection assembly and the scratch detection assembly are installed on the two sides of the bottom of the installation plate, and a switching assembly is arranged between the friction detection assembly and the scratch detection assembly. The switching assembly is used for switching the friction detection assembly and the scratch detection assembly to be in contact with the washable water silk ribbon, so that the friction test and the scratch test of the washable water silk ribbon can be realized, the friction test and the scratch test are completed on one device, and the wear resistance detection efficiency is improved.

The invention relates to the field of film adhesive force measurement, in particular to an adhesive force measurement method and system for an OSP organic solderability preservative film, and the method comprises the steps: detecting the surface of the OSP organic solderability preservative film to be measured by using an electron microscope SEM for preliminary evaluation; independently sampling the to-be-measured OSP organic solderability preservative which passes the preliminary evaluation to obtain an OSP organic solderability preservative sample group; respectively selecting one sample from the OSP organic solderability preservative sample group, and carrying out scratch test, thermal cycle test and tensile test; the critical load obtained by the scratch test, the film layer change condition obtained by the thermal cycle test and the adhesive force strength data obtained by the tensile test are systematically and comprehensively analyzed, and by constructing a mathematical model, various data are weighted and calculated to obtain an adhesive force measured value. According to the invention, the adhesive force of the OSP organic solderability preservative is evaluated through comprehensive dimensions, and the accuracy and reliability of the measurement of the adhesive force of the OSP organic solderability preservative are improved.

The utility model discloses a scratch-resistant testing device for a scratch-resistant decorative plate, and relates to the technical field of scratch-resistant testing of the scratch-resistant decorative plate. The device comprises a base, a working table, a driving seat, an L-shaped rod, a wheel disc and a U-shaped fixing piece, the working table is arranged above the base, the top of the working table is fixed to a top plate through a supporting piece, the lower end of the top plate is fixed to a supporting plate through an electric telescopic column, and a guide rod is fixed to the upper end of the supporting plate and penetrates to the upper end of the top plate; according to the utility model, the plurality of U-shaped fixing seats, the positioning bolts and the sliding blocks are matched with one another to fix the plurality of scratch test heads for testing the scratch resistance of the decorative plate, and the plurality of scratch test heads can be replaced by matching the wheel disc with the first spring cotters, namely the first spring cotters are pulled out, so that the scratch resistance of the decorative plate can be tested. At the moment, the pin head of the first spring bolt is separated from the positioning hole, and the scratch test head for detection can be quickly replaced by rotating the wheel disc.

The utility model belongs to the technical field of battery pack testing, and particularly discloses a battery pack rubbing test hanger which comprises a plurality of fixed beams, a plurality of movable beams and a plurality of connecting assemblies. A plurality of connecting devices are arranged on the movable beam; the movable beam is connected with the fixed beams through the connecting devices to form a frame; one moving beam is connected with at least one connecting assembly; the connecting assembly comprises a connecting frame and a first fastening clamp; and the first fastening clamp can adjust the tightness and is used for clamping the moving beam. The connecting frame is connected with the movable beam through the first fastening clamp, and when the position of the connecting frame needs to be adjusted, the first fastening clamp can be loosened to adjust the position of the connecting frame; when the connecting frame moves to a required position, the first fastening clamp is tightened so as to fix the connecting frame; therefore, the connecting holes in the hanging rack can correspond to the hanging holes in different types of batteries, so that the types of battery packs capable of being fixed by the hanging rack are increased, the test period of a scratch test is shortened, and the test cost of the scratch test is reduced.

The utility model discloses an artificial board scratch testing machine which comprises a machine body capable of being supported on the ground, and a position adjusting assembly capable of adjusting the scratch testing position is arranged on one side of the machine body and used for adjusting the scratch position of a tested material. One side of the position adjusting assembly is provided with a scratch testing assembly for carrying out scratch testing on the surface of the material; the machine body is further provided with a material placement assembly capable of placing a test material, the material placement assembly is rotationally connected with the upper wall of the machine body, and the scratch test assembly is used for carrying out scratch test on the material placed on the material placement assembly. The utility model belongs to the technical field of scratch testing machines, particularly relates to an artificial board scratch testing machine, and aims to at least solve the problem that alignment and leveling are difficult when the scratch testing machine performs a scratch test on an artificial board.

To provide a coating material suitable for food and drink cans, capable of forming a coating film having good abrasion resistance, processing adhesion and hardening property. [Solution] A can coating that satisfies (i) and (ii) in the following nano-scratch test. <Nano scratch test> The can paint was applied to the body of an aluminum can, baked at 180°C for 52 seconds and 200°C for 2 minutes, and the coating surface of the resulting sample was measured at 23°C using a nanoindenter. (i) the average coefficient of friction is 2 or less, and (ii) the maximum scratch size is 120 nm or less.

The invention discloses a scratch-resistant automotive rubber-coated PC / ABS soft skin composite material and a preparation method thereof. The scratch-resistant automotive rubber-coated PC / ABS soft skin composite material comprises the following raw materials in parts by weight: 10-30 parts of hydrogenated styrene elastomer; 10 to 30 parts of a semi-hydrogenated styrene elastomer; 20 to 50 parts of a polyurethane elastomer; 20-50 parts of a plasticizer; 2 to 20 parts of a maleic anhydride graft; 1-5 parts of a scratch resistant agent; and 0.5-5 parts of an anti-oxidation and anti-ultraviolet auxiliary agent. The scratch-resistant rubber-coated PC / ABS soft skin composite material for the vehicle is prepared by a twin-screw composite modification process, has excellent scratch resistance, small cross scratch color difference and unobvious fingernail scratch marks, and is superior to common elastomer materials in the market; according to the scratch-resistant rubber-coated PC / ABS soft skin composite material for the vehicle, the production process is double-color injection molding integral forming, compared with a traditional coating process, the production steps are greatly simplified, and the forming period is shortened to 40-80 s from original 5-20 min.

The utility model relates to touch -sensitive screen function test technical field discloses a kind of touch -sensitive screen function piece function test device, including sliding scratch test mechanism, the sliding scratch test mechanism includes sliding motor, the output end of the sliding motor is fixedly connected with rotation gear one, the outside of rotation gear one is engaged with driven wheel, the outside rotation of the driven wheel is connected with rotating plate one, the outside of rotating plate one, i. e. the one end rotation of the driven wheel is rotationally connected with support rotating column in remote place.The utility model in, motor operation, drive rotation gear one rotation, drive driven wheel, so that rotating plate one rotates, guide sliding motor to stably slide outside sliding support block one, fine scratch block and wide scratch block can carry out scratchproof test on touch -sensitive screen surface, detect the wear resistance of touch -sensitive screen and the flexible brush on sliding brush can be synchronized to clean touch -sensitive screen surface, provide good condition for accurate evaluation touch -sensitive screen quality.

The utility model discloses a continuous CPED deposition coating testing device which is applied to the field of testing devices and comprises a testing box, and a first connecting plate, a second connecting plate, a third connecting plate and a fourth connecting plate are fixedly connected into the testing box. According to the utility model, the semiconductor chilling plate is arranged, the cold end and the hot end of the semiconductor chilling plate are utilized to generate cold energy and heat energy, and the interior of the heating bin and the interior of the refrigerating bin are lifted and lowered in a blowing mode of the air blowing assembly, so that the use of the coating in different temperature environments is simulated; the use of the coating in different humidity environments can be simulated by arranging the humidifying assembly, the connecting plate, the connecting rod, the supporting seat and the scratch cone are pulled to move by arranging the air cylinder, the scratch test of the coating can be realized by utilizing the scratch cone to scratch the coating, and the scratch test of the coating in three environments can be met at a time by different environments in different bins, so that the test efficiency can be improved, and the test cost can be reduced. And the authenticity and accuracy of the scratch resistance test can be improved under the simulation of different environments.

The invention discloses a method for testing the adhesive force of a tooth or tooth-like material interface and application. The method comprises the following steps: carrying out scratch test on a to-be-tested surface layer by using linear loading force in a specified range by adopting a micro-adhesion tester or an atomic force microscope; scratches are divided into three stages, in the first stage, linear loading force is used for detecting height changes in the whole process, in the second stage, scraping is slight and discontinuous, obvious furrows do not appear, in the third stage, obvious furrows appear, but the width of the furrows is narrow, and obvious base body scratches cannot be observed in the centers of the furrows; calculating a sudden change point load of the to-be-tested surface as an index for evaluating the adhesive force; the linear loading force in the specified range is the force from the minimum force for breaking the to-be-tested surface to the force for puncturing the to-be-tested surface without forming obvious scratches on the substrate. According to the method, the adhesive force of the in-vitro biological model can be tested, the comparability of different research data is ensured, a unified in-vitro test standard can be formulated, and a foundation is laid for promoting industry standardization.

This application discloses a method, apparatus, device, and storage medium for determining the critical load of a thin film. This application determines the total input energy load curve through a thin film scratch test. Based on the instantaneous normal load and total input energy in the initial stage of the scratch test, a baseline energy load curve for the entire stage is determined. Then, the failure energy load curve is determined using the energy balance method. This application performs first-order differentiation on the failure energy load curve and finds the peak value of the first-order derivative curve to determine the critical load of the thin film. This method eliminates the subjectivity of manual observation and the ambiguity of friction curves, greatly improving the repeatability of the results. Furthermore, this method eliminates the need to calculate cracking energy and peeling energy separately, avoiding the physical difficulties of directly calculating cracking energy and peeling energy. The peak value of the first-order derivative of the failure energy load curve more accurately corresponds to peeling in adhesion failure, thus the critical load can be accurately determined based on the peeling point.

This invention relates to a device and method for tilt correction in indentation scratch testing, belonging to the field of precision testing. The tilt correction device mainly consists of a stage (1), piezoelectric precision positioning units a (2-a), b (2-b), c (2-c), and a base plate (3). The piezoelectric precision positioning units a (2-a), b (2-b), and c (2-c) are completely identical. The correction method involves using an indentation scratch tester to apply a small load indentation to the three vertices of an isosceles right triangle, measuring the z-coordinates of the three points, and calculating the deflection angles of the sample around the x and y axes. Then, the tilt angle of the sample is corrected using the tilt correction device. The advantages of this invention are: it can accurately measure the tilt angle of the sample; the three sets of flexible mechanisms arranged in an equilateral triangle can reduce the size of the device; and the flexible mechanisms using a two-stage amplification can improve the correction range.

The utility model discloses a kind of anti-module scratch test plug-in frame devices, it is related to plug-in frame module test technical field.The anti-module scratch test plug-in frame device includes plug-in frame side plate, plug-in frame backplate and plug-in frame bottom plate, the plug-in frame side plate is connected in the both sides of plug-in frame backplate, plug-in frame bottom plate is connected in the bottom of plug-in frame backplate and plug-in frame side plate, and the cavity is formed between plug-in frame side plate, plug-in frame backplate and plug-in frame bottom plate, the sidewall on the side of plug-in frame side plate close to cavity is equipped with scratch-proof epoxy side plate, roller is equipped in plug-in frame bottom plate, and the top wall of plug-in frame bottom plate is equipped with scratch-proof epoxy bottom plate.The utility model provides a kind of anti-module scratch test plug-in frame device, when traditional module test, the sliding friction generated between module bottom and plug-in frame bottom plate in the process of module plug is replaced by rolling friction, and the partition collaborative mode of roller and epoxy plate is used to realize scratch-proof function, and it also has the advantages of labor-saving operation, improve efficiency.

The present invention provides a laminate containing a surface layer that exhibits excellent mattifying properties and yields good results in both needle scratch tests and fingernail scratch tests, as well as a surface coating composition capable of preparing such a surface layer. [Solution] The laminate of the present disclosure includes a substrate, and a surface layer having scratch resistance and matte finish, which contains resin beads having an average particle size of 1 micrometer or more and 20 micrometers or less, and a glass transition temperature greater than -30°C and less than 34°C, and a binder, wherein the surface layer contains less than 75% by mass of resin beads based on the total weight of the surface layer, and when the elastic modulus of the surface layer is measured with an atomic force microscope, the region of the surface layer other than the resin beads exhibits an elastic modulus of 65 MPa or less.

The invention discloses a self-locking anti-backlash and segmented loading coating scratch testing device, comprising: a transmission mechanism mounted on a frame and used for providing rotation power and realizing self-locking; the loading mechanism is connected with the output end of the transmission mechanism and is used for converting the rotary motion into linear pressing motion and providing a linearly changing load for the pressing head; the measuring module is integrated on the loading mechanism and is used for detecting a normal load and a tangential shear force applied to the pressure head in real time; and the moving platform is used for bearing the sample. The transmission mechanism comprises a servo motor and a double-lead worm and gear pair driven by the servo motor. The loading mechanism comprises a cam shaft, a linear cam and a plane follower, and the working end of the plane follower is kept in contact with the contour curved surface of the linear cam. According to the invention, the dual-lead worm and gear transmission with a self-locking anti-backlash function is combined with the linear cam loading mechanism with segmented profile curves, so that the load control accuracy and the loading linearity are ensured, and the coating scratch test precision is improved.

The utility model belongs to the technical field of coating scratch test, and particularly relates to a scratch damage test tool, which comprises a mounting frame, the bearing seat is mounted on the mounting frame; the bearing seat comprises two bearing wheel sets which are parallel to each other; the pressing seat is vertically mounted on the mounting frame in a sliding manner and is positioned above the bearing seat; the lifting mechanism is mounted on the mounting frame; the pressing seat is fixedly mounted at the lower end of the lifting mechanism; the pressing base comprises a pressing frame, and two parallel pressing wheel sets are installed on the pressing frame. The bearing wheel set and the pressing wheel set are both parallel to a cylindrical tested piece located on the bearing seat. The auxiliary seat is transversely mounted on the pressing frame in a sliding manner, and a test needle is mounted at the lower end of the auxiliary seat; the moving mechanism is used for driving the auxiliary seat to move along the central axis direction of the cylindrical tested piece; and the rotating mechanism is used for driving the cylindrical tested piece to rotate around the central axis of the cylindrical tested piece. The objective of the utility model is to solve the problem that a conventional test tool cannot test a cylindrical tested piece.

The application belongs to the technical field of material surface performance testing, and discloses an ultrasonic vibration assisted scratch test bench and method. The test bench comprises: an X-axis transmission component directly connected with an X-axis ultrasonic module through mechanical structure, which simplifies the vibration transmission path, directly transmits the vibration energy to the workpiece, and controls the speed of the scratch through the X-axis transmission component; a Y-axis transmission component directly connected with a Y-axis ultrasonic module through mechanical structure, which simplifies the vibration transmission path, directly transmits the vibration energy to the workpiece, and realizes the scratch at different positions in the Y-axis through the Y-axis transmission component; and a Z-axis transmission component directly connected with a Z-axis ultrasonic module through mechanical structure, which simplifies the vibration transmission path, directly loads the vibration energy to the workpiece, and completes the loading in the Z-axis direction through the Z-axis transmission component. The application provides guidance for the application of ultrasonic vibration machining technology in difficult-to-machine materials and brittle and hard materials.

Method of carrying out a scratch test on a ductile metallic coating (7b) provided on a brittle substrate (7a) of a sample (7), said comprising the steps of: - positioning a sample (7) on a sample stage (5) facing a wedge blade indenter (9) having a length dimension (L) perpendicular to an indentation axis (Z) which is less than a width of said ductile metallic coating (7b) considered perpendicular to a scratch direction (X), wherein said sample stage (5) is arranged to tilt about two mutually perpendicular axes of rotation which aarree each substantially perpendicular to said indentation axis (X), and wherein said ductile metallic coating (7b) is positioned so as to be substantially perpendicular to said indentation axis (Z); - carrying out a preliminary scratch test on said sample (7) with said wedge blade indenter (9) under a first load applied to said sample parallel to said indentation axis (Z), said preliminary scratch test being carried out by relatively displacing said wedge blade indenter (9) with respect to said sample (7) in a scratch direction perpendicular to said length dimension (L) of said wedge blade indenter (9); - observing the scratch thereby produced; - if necessary, correcting the tilt of said sample stage (5) such that said ductile metallic coating (7b) is perpendicular to said indentation axis (Z); - carrying out at least one main scratch test under a second load which is greater than said first load, while recording parameters relating to forces applied between said wedge blade indenter (9) and said sample (7) and to relative displacement of said wedge blade indenter (9) with respect to said sample (7); - observing the scratch thereby produced and correlating said parameters with the observed scratch.

Provided is a scratch test machine which is configured so that a needle scratches a surface of an evaluation subject by being pressed against the same, and which comprises: a pressing mechanism that has the needle attached to the lower end thereof, and that presses the needle against the surface with a constant load; and a support part that supports the pressing mechanism. The support part supports the pressing mechanism in a state in which the pressing mechanism is in contact with the surface at at least three locations.

The utility model relates to an efficient pig leather scratch-proof testing device which comprises a working table, a mounting frame is fixedly connected to the working table, a working frame sliding left and right is mounted on the mounting frame, and a first driving mechanism used for driving the working frame is mounted on the mounting frame; a testing frame is mounted on the working frame, a plurality of scribing tools are arranged on the testing frame, and a second driving mechanism used for driving the testing frame to move up and down is mounted on the testing frame; according to the pig leather wear resistance testing device, the fixing assemblies are symmetrically arranged on the left side and the right side of the workbench, and a plurality of scribing tools in different shapes can be installed on the testing frame, so that the wear resistance of pig leather in different use scenes can be tested and compared in one testing process, the testing result is more visual, and samples are richer.

The invention provides a full-automatic scratch detection work station, relates to the technical field of test equipment, and aims to solve the problems that at the present stage, a sample wafer needs to be scratched manually, and the accuracy is low due to large deviation between actual cutting force and a theoretical value. The invention provides a full-automatic scratch detection workstation. The full-automatic scratch detection workstation comprises a mounting frame and a scratch test module, the scratch test module is arranged on the mounting frame and comprises a film thickness measuring mechanism for measuring the film thickness of the sample wafer and a scratching mechanism for scratching the sample wafer; the scratching mechanism comprises a cutter assembly and a pressure adjusting mechanism. The pressure adjusting mechanism can automatically adjust the contact pressure between the cutter assembly and the sample wafer according to the film thickness value measured by the film thickness measuring mechanism.

The utility model discloses a vacuum variable temperature probe testing device, and particularly relates to the technical field of probe testing, the vacuum variable temperature probe testing device comprises a placing rack, four corners of the lower end of the placing rack are fixedly connected with supporting legs, the left part and the right part of the upper end of the placing rack are fixedly connected with a fixing device together, and the middle side of the front part of the upper end of the placing rack is fixedly connected with a sliding shell mechanism. And the middle part of the sliding shell mechanism is slidably connected with a pressure testing device. According to the vacuum variable-temperature probe testing device provided by the utility model, through the designed fixing device, a probe testing sample placed on the placing rack can be fixed, so that the probe testing sample does not deviate during testing, and the accuracy of a testing result is ensured; the fixing method is simple and convenient, and the working efficiency is effectively improved; through the designed pressure testing device, pressure scratch testing can be conducted on the probe sample, the hardness and the abrasion resistance of the probe sample are tested, it is guaranteed that the probe cannot be bent or broken during implementation, and the practicability of the device is improved.

This application provides a refined fracturing geological modeling method based on scratch testing. By performing scratch testing on core samples, scratch test data characterizing the mechanical properties of the core sample material is accurately obtained. Mechanical data is calculated based on the scratch test data, and wavelet transform is performed on the mechanical data to obtain a feature dataset for constructing a fracturing mechanical model. Compared with the prior art, scratch testing accurately obtains the mechanical parameters of reservoir rocks, characterizes the mechanical properties of the rocks, thereby optimizing the mechanical feature model and providing more accurate design data for the geological model.

This application provides a rock scratch testing device based on true triaxial stress, relating to the field of rock performance testing technology. The rock scratch testing device based on true triaxial stress includes: a support base; at least two lateral loading mechanisms, which are arranged opposite each other along the width direction of the support base, and at least one lateral loading mechanism is arranged along the length direction of the support base, with the at least two lateral loading mechanisms respectively used to apply lateral pressure to opposite sides of the rock sample; two axial loading mechanisms, which are used to apply pressure to the end faces of both ends of the rock sample; and a scratching mechanism to scratch the side surface of the rock sample. By setting at least two lateral loading mechanisms to apply corresponding lateral pressure to the side surfaces of different areas of the rock sample, and by applying pressure to the end faces of the rock sample through the axial loading mechanisms, the pressure on the rock sample is simulated, making the test results more accurate and reducing test errors.