219 results about "Surface integrity" patented technology

The invention discloses a method for improving the high-cycle fatigue performance of a Ti6Al4V titanium alloy, and belongs to the technical field of metal material processing, and the method comprises the following steps: S1, determining shot peening strengthening parameters based on material performance parameters and related standards; according to the method, high-amplitude residual compressive stress is introduced through shot peening strengthening, the stress state of the surface and the depth direction of the material is changed, accordingly, crack extension can be restrained, the fatigue life is prolonged, in addition, a plastic deformation layer is induced to be generated under the surface depth in the shot peening process, the microstructure of the material is improved, and the anti-fatigue performance of the material is improved; through femtosecond laser shock, surface defects can be effectively removed, the surface compactness can be improved, microcracks can be reduced, and a refined grain structure can be generated, so that the strength and toughness of the material are further enhanced, the high-cycle fatigue performance of the material is further improved, the two are combined, the residual stress state is optimized, and the surface integrity is improved. The fatigue performance of the Ti6Al4V titanium alloy is remarkably improved.

The invention provides a visual detection device and method for building engineering wall quality, and the method comprises the steps: firstly obtaining a multi-angle image set of a to-be-detected wall, which comprises surface images and internal structure scanning images under different illumination conditions, and then carrying out the visual feature extraction of the multi-angle image set, according to the method, a comprehensive visual detection feature set covering surface integrity, internal crack distribution and material uniformity features is obtained, defect area positioning processing is performed on the comprehensive visual detection feature set based on a preset quality evaluation rule, a defect distribution map is generated, and then a visual quality report is generated according to the defect distribution map. And finally, the visual quality report is transmitted to terminal equipment to trigger wall maintenance operation, so that comprehensive and accurate detection and visual presentation of the wall quality are realized, wall maintenance can be effectively guided, and the construction engineering wall quality guarantee level is improved.

The invention discloses a preparation method of a nickel-based tungsten carbide laser cladding wear-resistant gradient coating, which comprises the following steps: step 1, preparing mixed powder of a transition layer, a functional layer and a repair layer; step 2, pretreating a matrix: removing oxide skin on the surface of the matrix, polishing to be smooth, and preheating the matrix to 350-500 DEG C; step 3, sequentially preparing a first functional layer, a transition layer, a second functional layer and a repair layer by adopting a laser cladding process; and 4, coating post-treatment is conducted, specifically, the surface of the repairing layer is polished to the specified thickness, and the defect-free wear-resistant gradient coating is formed. Through gradient component layered design, the functional layer adopts high tungsten carbide content to maximize wear resistance, and the transition layer relieves thermal expansion difference between the coating and a matrix, reduces interface stress and reduces crack initiation; according to the repairing layer, micro-cracks and air holes generated in the cladding process are filled through low-hardness nickel-based components, and the compactness and surface integrity of the coating are remarkably improved.

The invention relates to the technical field of three-step fine polishing methods for 19nm wafer regeneration, discloses a fine polishing method named'three-step fine polishing method for 19nm wafer regeneration ', and aims to solve the technical contradiction between macroscopic planarization and microscopic surface integrity of regenerated wafers in advanced process nodes. The method is characterized by comprising a first fine polishing step, a second fine polishing step and a third fine polishing step, and in each step, gradient decreasing polishing pad hardness, abrasive particle size and concentration, polishing pressure and pH value are adopted; and an on-line process monitoring and self-adaptive feedback control subsystem is used for assistance. By adopting the technical scheme, defects can be efficiently removed, damage can be repaired step by step, the wafer surface with ultralow defect density and excellent chemical stability is obtained, the requirements of the manufacturing process of 19nm and more advanced semiconductors are met, and the yield is increased.

The invention belongs to but not limited to the technical field of aviation, discloses a surface integrity constrained aircraft engine blade grinding and polishing process optimization method and system, and establishes a material removal model of a blade based on an orthogonal center combination experiment data set. And model input and output of machine learning are set, data are preprocessed, and the completeness of the grinding and polishing surface is predicted through a machine learning XGBoost algorithm. And obtaining multiple groups of solutions of the optimization variables according to an MSPSO particle swarm multi-objective optimization algorithm. And according to the multiple groups of solutions of the optimization variables, screening out a priority solution of each optimization target and a global optimal solution conforming to all constraints and optimization targets. According to the method, through analysis of a grinding and polishing experiment data set, a material removal model of the blade is established, and a material removal coefficient is calibrated. The model can quantitatively describe the influence of each process parameter on the material removal depth, and provides theoretical support for quantitative and accurate grinding and polishing processing of the aircraft engine blade.

The invention relates to an ultra-precision grinding and photochemical mechanical polishing combined process for a laser crystal sheet. Comprising the following steps that coarse grinding is conducted through a coarse-grained grinding wheel, rapid thinning is achieved, the depth of a subsurface damaged layer is determined, and reference is provided for the grinding wheel feeding amount in the accurate grinding stage; a fine-grained grinding wheel is adopted for accurate grinding, a damaged layer introduced in the coarse grinding stage is removed, and high surface / subsurface quality and surface precision are obtained by optimizing technological parameters; a special polishing solution for photochemical mechanical polishing is prepared from an aluminum oxide (Al2O3) grinding material, semi-fine polishing is carried out on a laser crystal sheet, and surface damage caused in the grinding stage is rapidly removed; a special polishing solution for photochemical mechanical polishing is prepared from a zirconium oxide (ZrO2) grinding material, and the laser crystal sheet is finely polished, so that the surface quality and the surface precision are further optimized; an ultrasonic cleaning instrument is adopted to clean the laser crystal slice, and a cleaning agent is absolute ethyl alcohol. According to the invention, high-surface integrity and high-efficiency processing of the laser crystal slice can be synchronously realized.

The invention relates to a top-cover-free rectangular concrete body inner mold demolding device and demolding method.According to the top-cover-free rectangular concrete body inner mold demolding device, through innovative structural design, a rectangular inner mold is divided into two angle molds and two L-shaped molds, and a track extending by a specific angle (45 degrees in the horizontal direction) and an intermittent driving device are matched. During demolding, the intermittent driving device can accurately drive the two angle molds to synchronously slide inwards firstly, the contact area and friction force between the inner mold and a concrete body are effectively reduced, then the two L-shaped molds are driven to synchronously slide inwards, and the whole demolding process is completed. Compared with a traditional demolding mode, the demolding efficiency is greatly improved, and the demolding time is shortened; by the adoption of the gradual demolding mode, direct beating and violent disassembly of the mold and the concrete body are avoided, the risk that the inner mold and the concrete body are damaged is effectively reduced, the surface integrity and the internal structural strength of the concrete body are guaranteed, the service life of the inner mold is prolonged, and the production cost is reduced.

The invention discloses a sheet metal part welding tool and a welding method thereof, relates to the technical field of sheet metal part machining, and aims to solve the technical problem that when a current welding tool fixes a sheet metal part, the sheet metal part is prone to damage and deformation, and the sheet metal part welding tool comprises a workbench, welding equipment installed on the workbench and a movable machining platform assembly installed on the workbench. The workpiece taking assemblies are mounted on the two sides of the workbench; the part taking assembly comprises mechanical arms installed on the two sides of the workbench and adsorption assemblies installed at the output ends of the mechanical arms. The adsorption assembly comprises an adsorption plate, adsorption holes, a guide pipe and a vacuum pump; a cavity is formed in the adsorption plate, and the multiple adsorption holes are formed in one side of the adsorption plate and distributed in an annular array mode. The sheet metal parts are grabbed in a vacuum adsorption mode, and the appearance quality and the surface integrity of the sheet metal parts can be kept easily.

The invention discloses a warpage marking device, and relates to the technical field of glass substrate warpage detection, the warpage marking device comprises a detection equipment main body, the middle position of the detection equipment main body is fixedly connected with a detection table, a driving pneumatic cylinder is installed above the detection table, and the output shaft end of the driving pneumatic cylinder is provided with a detector; the detector is located at the eccentric position above the substrate main body, so that detection is not limited to the central area of the plate, the surface of the substrate main body can be completely covered, more accurate surface data feedback analysis is achieved, the surface integrity of the substrate main body can be evaluated more accurately, and meanwhile the detection accuracy is improved through dynamic adjustment of the detection area in the process. Different detection positions of the detector are increased while the irradiation range of the detector is reduced, so that each part of the substrate can be subjected to uniform and sufficient detection feedback, the problem that in a traditional method, light is excessively focused on a central area and detection of an edge area is insufficient is solved, and uniform distribution and comprehensive coverage of detection light are ensured.

The invention provides a nickel-based high-temperature alloy cutting microstructure prediction method based on a dislocation gradient model, and aims to realize optimization of process parameters through multi-scale modeling. The method comprises the following steps: firstly, calculating dislocation mobility under different temperature and pressure conditions by utilizing molecular dynamics simulation; and a dislocation generation and annihilation rate model is established in combination with a dislocation dynamics theory, so that a dynamic relationship between cutting strain and dislocation evolution is disclosed. And further through data fitting, a constitutive equation between the dislocation density and the material hardening behavior is constructed, and the evolution law of the dislocation cell structure is described emphatically. On an ABAQUS platform, a two-dimensional cutting model containing a thermal coupling effect is established, a dislocation density constitutive equation is embedded into a user-defined material module, and closed-loop correlation of macroscopic cutting parameters and microstructure evolution is achieved. According to the method, the dislocation density is creatively used as a cross-scale bridge, the understanding of a dynamic recrystallization and dislocation motion coupling mechanism in the cutting process is deepened, a prediction model is provided for technological parameter optimization, and the method has important engineering guiding significance for improving the integrity of the machined surface of the high-temperature alloy part.

The invention provides a precision forging method for an adjustable blade of an aero-engine based on titanium alloy, which can realize precision forging forming of the blade of the titanium alloy aero-engine, enables the blade profile size of a blade forging to directly reach the size of a finished product, does not need to be machined again, is high in product percent of pass and good in air passage consistency, also can keep the continuity of a metal flow line, and is suitable for large-scale production. The mechanical property and the aerodynamic performance are high, and the surface integrity and the metallographic structure meet the design requirements. The method comprises the following steps of blanking, surface cleaning, glass lubricant spraying, heating blank making, surface cleaning, glass lubricant spraying and forging, and is characterized in that the forging procedure comprises heating upsetting, heating pre-forging and heating finish forging, and the surface cleaning and glass lubricant spraying are respectively carried out after each procedure of heating upsetting, heating pre-forging and heating finish forging.

The utility model provides a nanoscale precision machining surface integrity detection device for precision machining, which belongs to the technical field of detection devices and comprises a machine body, a platform is arranged in the machine body, a rotating mechanism is arranged in the platform, and the rotating mechanism comprises a mounting seat, a driving motor, a speed reducer, a rotating rod and a turntable. According to the utility model, through the arrangement of the rotating mechanism, the placing disc can rotate orderly, the workpiece on the placing disc can be rapidly detected by matching with the use of an image detector, and through the arrangement of the clamping mechanism, the workpiece is kept stable in the detection process and is prevented from moving or rotating in the detection process, so that the detection efficiency is improved. The safety of the whole detection process can be ensured, the image detector can be driven to sweep or move on the to-be-detected surface of the workpiece through the arrangement of the first moving mechanism and the second moving mechanism, and it is ensured that the image detector can cover all the to-be-detected surfaces of the workpiece.

According to the surface pretreatment method for the quenched and tempered steel plate, through shot blasting treatment before quenching and non-oxidation heating in the re-austenitizing process, the surface roughness of the steel plate has good paint adhesive force. The steel plate is controlled to be quenched and cooled within a certain temperature range below Bf or Mf, the steel plate keeps a certain residual temperature, high-temperature-resistant primer is immediately sprayed after the steel plate is quenched, paint can be rapidly cured under the residual temperature effect of the steel plate, the steel plate can be directly subjected to high-temperature tempering, the paint surface integrity after tempering is good, oxidation in the tempering process is prevented, and the service life of the steel plate is prolonged. And the delivery surface quality is met. The problems that a steel plate in a traditional technological process needs to be subjected to secondary shot blasting and paint drying, and the pretreatment technological process is complex are solved; in addition, through accurate setting of quenching cooling parameters, the amount of quenching cooling water is saved. And meanwhile, the effects of energy conservation and emission reduction can be achieved.

The invention discloses a femtosecond laser strengthening method for improving the surface integrity of a laser cladding high-temperature alloy, and belongs to the technical field of laser cladding postprocessing, and the femtosecond laser strengthening method comprises the following steps: S1, selecting a proper high-temperature alloy as a base material, and cleaning and pretreating the surface of the base material; s2, a cladding laser is started to clad the base material; S3, a femtosecond laser system is set, and the optimal light beam quality and energy density are obtained; according to the method, the cladding surface is strengthened through femtosecond laser, the defects of cracks, air holes and the like appearing on the material surface after laser cladding are effectively removed, the surface integrity is greatly improved, premature failure caused by the problems of stress concentration and the like in the using process of components can be prevented through elimination of the surface defects, the service life of the components is prolonged, and the production cost is reduced. The safety and stability of the key hot end component are guaranteed, and the surface integrity of the high-temperature alloy component can improve the service performance and reliability under extreme loads such as high temperature, high flow speed and high pressure in the fields of aerospace and the like.

The present invention relates to a combined process of ultra-precision grinding and photochemical mechanical polishing of laser crystal slices. The process comprises the following steps: using a coarse-grained grinding wheel for rough grinding to achieve rapid thinning and determine the depth of the subsurface damage layer, providing a reference for the grinding wheel feed rate in the fine grinding stage; using a fine-grained grinding wheel for fine grinding to remove the damage layer introduced in the rough grinding stage, and obtaining higher surface / subsurface quality and surface accuracy by optimizing process parameters; using aluminum oxide (Al2O3) abrasives to prepare a special polishing liquid for photochemical mechanical polishing, and performing semi-fine polishing on the laser crystal slices to quickly remove the surface damage caused in the grinding stage; using zirconium oxide (ZrO2) abrasives to prepare a special polishing liquid for photochemical mechanical polishing, and performing fine polishing on the laser crystal slices to further optimize the surface quality and surface accuracy; and using an ultrasonic cleaner to clean the laser crystal slices, with anhydrous ethanol as the cleaning agent. The present invention can simultaneously achieve high surface integrity and high-efficiency processing of laser crystal slices.

The invention relates to the technical field of building ceramics, and particularly discloses a high-gloss light-weight glazed brick and a preparation method thereof.The preparation method comprises the steps that 1, composite high-aluminum mud, expanded perlite, nano-zirconia and graphene are mixed and subjected to ball milling, and green body powder is obtained; step 2, carrying out compression molding on the green body powder to form a green body, applying ground glaze on the green body, carrying out ink-jet printing, and carrying out shower coating of transition glaze and high-transmittance wear-resistant glaze to obtain a green brick; and step 3, drying the green brick prepared in the step 2, sintering, and carrying out composite polishing to obtain the high-gloss light glazed brick. The prepared high-gloss light-weight glazed brick not only has higher Moh's hardness, but also has the characteristic of remarkable light weight, so that the weight of the brick body is greatly reduced, the brick body also has higher wear-resistant grade and glossiness, scratches and wear in daily use can be effectively resisted, and the completeness and attractiveness of the surface can still be kept after the brick is used for a long time.

The invention relates to the technical field of superfine pipe treatment, and discloses a method for removing burrs at a port of a superfine pipe, which comprises the following steps: grinding in a grinding cylinder, polishing in a beaker, grinding a pipe in the grinding cylinder through grinding materials and grinding liquid so as to grind the burrs at the two sides of the pipe, and then sufficiently oscillating the grinding materials by using ultrasonic waves so as to remove the burrs at the port of the superfine pipe. According to the invention, the components of the polishing solution are added in the beaker, so that the polishing solution not only plays a role in polishing, but also can remove the residues of the internal grinding materials, and meanwhile, coating films can be formed inside and outside the pipe, so that the inner wall of the pipe is smooth and clean. The ultra-thin pipe end opening burr quality, the burr removing effect and the instrument detection result are good after the ultra-thin pipe end opening burr removing device is used for machining the ultra-thin pipe, the burr removing end face integrity is high, and follow-up use is facilitated.

The invention provides a composite manufacturing method for improving the integrity of the side face of a 316L part manufactured through selective laser melting additive manufacturing. The composite manufacturing method comprises the following steps that S1, selective laser melting additive manufacturing is conducted on the part; in this step, each layer is divided into a boundary region and a core region, and differentiated scanning strategies are implemented. Specifically, the boundary area adopts a scanning strategy of parallel section contour lines, and the core area adopts a conventional strip or chessboard type scanning strategy, so that the surface quality is optimized; and S2, ultrasonic surface deep rolling post-treatment is conducted on the side face of the part. The method is characterized in that through the combination of partition scanning and post-treatment, the excellent surface integrity, including high surface hardness, high corrosion resistance and low surface roughness, of the side face of the additive manufacturing 316L stainless steel part is achieved. Particularly, the surface roughness reaches the precision grinding level, meanwhile, the thin-wall part manufactured through the method shows extremely high strength and plasticity at the same time, and therefore the requirement for high-performance application is met.

The invention discloses a polycrystalline tungsten cutting surface performance regulation and control method which comprises the following steps: selecting high-purity tungsten powder, carrying out heat treatment after high-temperature sintering, removing an oxidation film and a rough layer to obtain a polycrystalline tungsten blank, selecting the polycrystalline tungsten blank with qualified density, carrying out high-temperature heating, carrying out forging, refining the average grain size of polycrystalline tungsten, and after the forging is finished, carrying out heat treatment on the polycrystalline tungsten powder to obtain the polycrystalline tungsten cutting surface performance. And the fine-grain tungsten sample is subjected to annealing treatment, the fine-grain tungsten sample is polished, and the fine-grain tungsten sample obtained after treatment is subjected to single-point diamond turning. According to the fine-grain tungsten treated through the high-temperature forging process, microcrack propagation can be effectively restrained, surface defects are reduced, then the surface integrity of a turned sample is improved, a continuous ultra-fine grain surface layer can be generated on the surface, and the irradiation resistance and corrosion resistance of the fine-grain tungsten are improved.

In order to solve the technical problems that an existing surface microstructure machining method is difficult to consider high precision, high surface quality, high efficiency, high adaptability, high controllability and low cost, the invention provides a five-axis linkage dot-scribing type forming method for a metal surface microstructure under a complex working condition. By utilizing the characteristics of small size and good replaceability of the microneedle cutter and combining the characteristics of high machining precision and high degree of freedom of the five-axis linkage numerical control machine tool, the pose of the microneedle cutter can be continuously and accurately adjusted through the five-axis linkage numerical control machine tool according to different complex working conditions; a required array microstructure can be machined on the surface of a metal workpiece under the complex working conditions that the operable space is narrow and limited, a free-form surface is formed, and a thin wall is prone to deformation, the defects that according to a traditional die imprinting technology, microstructure distribution controllability is low, and material surface integrity is damaged by micro-milling machining are overcome, and the microstructure forming efficiency is improved; and the method has the advantages of high precision, high surface quality and low cost.

The invention discloses a high-temperature and high-pressure testing device for a rock test, and particularly relates to the technical field of rock testing, the high-temperature and high-pressure testing device comprises a shell, the inner surface of the shell is fixedly connected with a first partition plate and a second partition plate, and the upper end of the second partition plate is provided with a bagging assembly and a pushing steering assembly. According to the high-temperature and high-pressure testing device for the rock test, the bagging assembly is arranged, so that a rubber film bag can be tightly attached to the outer surface and the left end face of a cylindrical rock, and in a high-temperature and high-pressure test, the surface integrity and the structural stability of the cylindrical rock during the test can be maintained; the outer cylindrical surface seal can prevent scratch wear caused by friction and collision with test device components, the rock mechanical property and test result accuracy are guaranteed, the sealed end surface can prevent surface moisture evaporation and sun crack of porous or easily-weathered rocks due to environmental change, the rock structure is maintained to be stable, and the consistency of rock performance in the test process is guaranteed.

The application relates to the technical field of steel metallurgy, and discloses a rolling process for improving the surface quality of C70S6 non-adjustable steel, which comprises the following steps: S1, a heating process; S2, a descaling process; S3, a rolling process; S4, a cooling process; and S5, a finishing process.The process can significantly reduce thermal stress cracks, the temperature uniformity of the casting blank from the surface to the core is improved through a three-stage heating mode and precise heat preservation control, the thermal stress is effectively released, the anti-collision and spacing control during charging are combined, local overheating or overcooling is avoided, the occurrence rate of surface micro-cracks and corner transverse cracks is reduced by more than 80%, and the surface integrity of the casting blank is greatly improved.The process can completely solve the iron oxide scale defects, the double high-pressure water descaling process after the furnace and before the medium rolling is adopted, the optimized combination of the descaling pressure and the water flow speed ensures that the residual area of the iron oxide scale is less than or equal to 3%, the iron oxide scale pressing-in defects are completely eliminated, and the surface cleanliness of the steel is significantly improved, thereby providing a high-quality base for subsequent processing.

A preparation method of a Ti-5553 titanium alloy plate with a grade fine grain double-state structure adopts cross-phase transformation point free forging to prepare a Ti-5553 titanium alloy plate blank, in the cross-phase transformation point free forging, the initial forging temperature of a forging stock is in a temperature zone of 45-95 DEG C above the phase transformation point, the lower limit of the final forging temperature is 650 DEG C, short-process and low-cost preparation of the plate blank is achieved, and the production cost is reduced. And the surface integrity and the deformation uniformity in the thickness direction of the plate blank in the hot rolling process in the temperature zone below the subsequent phase transformation point are guaranteed through the fine grain structure. According to the method, the strain range of a single pass is 0.2-0.25, the strain value of the single pass is larger than or equal to the critical formation strain of DDW of the Ti-5553 alloy, and therefore the number of DDW in the alloy can be increased through hot rolling in the temperature zone below the phase transformation point of each pass. The DDW in the plate is sharply increased after multi-pass hot rolling in the temperature zone below the phase transformation point, and grain refinement is sufficient. The microscopic grain size of the Ti-5553 hot-rolled plate prepared by the method is higher than 7 grade.

The application provides a processing parameter optimization method based on a GRA-CRITIC-TOPSIS method and processing surface integrity multi-indexes, and belongs to the technical field of high-efficiency precision processing. In view of the problems that the influence of processing parameters on workpiece surface integrity multi-indexes is complex in difficult-to-machine material milling processing, and the expected results of various indexes are contradictory, the grey correlation analysis method (GRA), the CRITIC objective weighting method and the ideal point method (TOPSIS) are organically combined, and a more scientific and comprehensive multi-objective processing parameter comprehensive optimization model is constructed. The method introduces the CRITIC objective weighting, the weight calculation is more reasonable, the index information overlap can be effectively avoided, and the optimization result has higher engineering reliability.

The application relates to a bending and overturning mechanism, which comprises a fixed die, a movable die capable of moving towards the fixed die, a punch arranged on the movable die, a shaping mechanism arranged on the side close to the movable die of the fixed die, a fixed seat, two symmetrically arranged sliding blocks in a curved sliding groove and corresponding elastic members, the sliding block has a material bearing plane, the material bearing planes of the two sliding blocks are coplanar to form a placing plane in a non-working state, and the punch pushes the metal plate to bend and drives the sliding blocks to move along the curved groove in a working state. The bending and overturning mechanism synchronously deforms the sliding blocks with the metal plate due to the above-mentioned structural design, effectively solves the plate scratch problem in traditional bending, and improves the forming quality and surface integrity.

This invention discloses a precision grinding process for machining the shaft of a swimming pool pump motor, relating to the field of shaft precision grinding technology. The process includes: Step 1: Establishing an incident window using a coherent jet nozzle, allowing the jet to penetrate the air gap into the grinding zone, first wetting and then introducing the load, and recording the incident window, jet posture, and dressing rhythm as working condition metadata; Step 2: After precision grinding, according to the material type, magnetic noise is used for ferromagnetic steel and X-ray diffraction is used for austenitic steel to obtain thermal damage and residual stress, and combining this with cleanliness to generate a surface integrity label and bind it to the working condition metadata; Step 3: Performing deionized ultrasonic cleaning and rinsing according to the label to remove chloride salts and free iron, rebuilding the passivation film according to specifications using chemical passivation, controlled drying, and clean sealing; Step 4: Under the premise of qualified chemical condition, performing isotropic ultra-finishing and low-plasticity rolling on the sealed working zone to form surface compressive stress and maintain geometric tolerances, quickly indicating inspection and writing back the label.

The invention relates to rotary cutting disc cutting equipment and technology for bathroom towel rack production, and belongs to the technical field of cutting equipment.The equipment comprises a machine base, a guide rail frame, a clamping assembly I, a clamping assembly II, a supporting arm, a cutting mechanism, an electric push rod and a supporting assembly; according to the pipe cutting device, force is evenly applied through alternate clamping and hydraulic linkage, the pipe is prevented from being deformed and scratched, a V-shaped positioning groove of the supporting assembly is matched with a clamping plate, the clamping assembly I is used for pushing the pipe to move in the clamping assembly II, and the supporting assembly is arranged below the cutting mechanism and used for clamping the pipe at the cutting end and driving the pipe to incline when the pipe is cut off. During cutting, the pipe is guided to incline, a blade is prevented from being clamped and blocked, meanwhile, an internal cleaning assembly is linked with feeding, cutting slag is synchronously discharged, the inner wall of the pipe is supported, the equipment is high in cutting precision, the surface integrity of the pipe is good, and the service life of a cutter is long.

The application provides an adjustable wire cutting machining device and a data processing method thereof, and relates to the field of wire cutting machining.The adjustable wire cutting machining device comprises a base, a machining table is fixed at the top of the front end of the base, a protection frame is arranged at the outer circle of the machining table and is fixed at the top of the base, and a power control cabinet is arranged at the right side of the protection frame.Through multi-stage data collection of primary, secondary, tertiary and standby collection modules and in combination with data processing of a 3D modeling end, omnibearing monitoring of the machining process is realized, the "difference degree" of each stage is calculated by comparing the actually measured data with the theoretical model data, and iterative and forward-looking process parameter compensation is carried out by using a correction module.This closed-loop self-adaptive control can dynamically correct the cutting path, energy input and cooling condition, effectively compensate the size deviation and thermal deformation generated in the machining process, and thus significantly improve the size precision, geometric shape precision and surface integrity of the final workpiece.

The present invention relates to the field of laser alloy technology, and discloses a laser alloy of MoSiCuPtReIrW powder, a composite coating and a preparation method of the composite coating, aiming to solve the problems of easy deformation and cracking, insufficient oxidation resistance and wear resistance of the laser alloying layer caused by the traditional laser alloying powder ratio. The laser alloy of MoSiCuPtReIrW powder is composed of the following raw materials: Mo, Si, Cu, Pt, Re, Ir, W. The present invention proposes to add rare elements Pt, Re, Ir, and W on the basis of common laser alloying powder ratio elements such as Mo, Si, and Cu, so as to solve the defects of easy deformation and cracking, insufficient oxidation resistance and wear resistance of the laser alloying layer caused by the traditional powder ratio. Based on the synergistic strengthening mechanism of the multi-element alloy components, the prepared composite coating exhibits excellent antioxidant stability and corrosion resistance, and can still maintain stable surface integrity under high-temperature friction conditions.

The invention provides a grinding device for building house steel part machining, and relates to the field of grinding devices.The grinding device comprises a working support, and a limiting guide plate is vertically and fixedly connected to the inner side of the upper end of the working support; the tensioning auxiliary shaft is arranged at the upper end of the limiting guide plate; the two positioning fulcrum shafts are respectively arranged on the left and right sides of the lower end of the limiting guide plate; the driving auxiliary shaft is vertically and rotatably arranged on the outer side of the tensioning auxiliary shaft; the tensioning auxiliary mechanism is arranged between the two positioning fulcrum shafts and the tensioning auxiliary shaft; the movable support is arranged on the right side of the rear end face of the limiting guide plate in a left-right sliding mode and rotationally connected with the positioning fulcrum shaft at the right end. The detection auxiliary mechanism is arranged among the movable bracket, the limiting guide plate and the grinding wheel; the production safety during grinding of the reinforcing steel bars and the grinding precision of the reinforcing steel bars are improved, and the surface integrity of the reinforcing steel bars is guaranteed; the problem that safety accidents are easily caused due to the fact that an operator does not replace the grinding wheel in time but continues to use the grinding wheel due to weak maintenance consciousness is solved.