196 results about "Planishing" patented technology

The invention discloses a rapid mechanical breaking device and method for a cast-in-place pile head, the device comprises a polisher, a small drilling machine, a pile breaking machine and a hydraulic shear, the polisher is used for polishing the pile head to find out the position of a main reinforcement, the small drilling machine is used for drilling to assist the pile breaking machine in positioning, and double drill bits of the pile breaking machine crush concrete inside and outside to form a hollow cylinder wall; and the hydraulic shear crushes the cylinder wall concrete and peels the main reinforcements to realize efficient breaking of the pile head. The operation method comprises the following steps: firstly, polishing a pile head by using a polisher, marking the position of a main reinforcement and determining a pile head center positioning point; then, a hole is drilled in the center point so as to assist the pile breaking machine in accurate positioning; then, the pile breaking machine rotates at a high speed and presses downwards, cutting teeth at the bottom ends of double drill bits of the pile breaking machine crush the concrete under the action of rotary cutting force, and a hollow cylindrical outer wall is formed; and finally, the outer wall concrete is sheared, pressed and crushed by a hydraulic shear to strip out main reinforcements, and pile head breaking is completed after cleaning. Compared with a traditional manual air pick breaking mode, the multi-machine cooperation greatly improves the construction efficiency and safety, is especially suitable for breaking pile heads of large-diameter cast-in-place piles, remarkably reduces the construction cost and improves the operation efficiency and precision.

The utility model relates to the technical field of plate processing, and discloses a multifunctional dadoing machine which comprises a working plate, four supporting legs are arranged at the bottom of the working plate, pushing mechanisms are arranged on the two sides of the working plate, the two pushing mechanisms are connected with the same n-shaped plate, a clamping mechanism is arranged at the top of the working plate, the clamping mechanism is located on the inner side of the n-shaped plate, and the n-shaped plate is connected with the working plate. A transverse adjusting mechanism is arranged on the inner wall of the top of the n-shaped plate, a moving plate is connected to the transverse adjusting mechanism, a rotating motor is arranged at the bottom of the moving plate, a rectangular plate is installed on an output shaft of the rotating motor, and a cutting mechanism and a polishing mechanism are installed at the bottom of the rectangular plate. According to the plate grooving machine, the grooving position can be adjusted, burrs on the sides of groove openings can be polished and ground flat after grooving, later-stage machining is avoided, labor intensity is reduced, the positions of the cutting mechanism and the polishing mechanism are exchanged, and plates can be grooved in a reciprocating mode under the condition that polishing after cutting is not affected.

The invention relates to the technical field of ceramic materials, in particular to high-purity aluminum nitride ceramic and a preparation method thereof.The preparation method of the high-purity aluminum nitride ceramic comprises the following steps that S1, granulation is conducted, specifically, aluminum nitride, a dispersing agent and modified polyvinyl butyral are mixed and granulated; s2, dumping and sintering: performing thermal degreasing in a dumping furnace, setting the heating rate to be 0.5-1.5 DEG C / min, setting the degreasing temperature to be 500-600 DEG C, and keeping the temperature for 2-4 hours; s3, compression molding: pressing into a green body by using an isostatic press, and controlling the molding pressure to be 80-100Mpa; s4, hot pressed sintering: smearing the protective liquid on the surface of the green body, and sintering in a heating and pressurizing manner; and S5, cooling and grinding are conducted, specifically, the sintered body is cooled to the normal temperature and ground to be flat. According to the preparation method of the high-purity aluminum nitride ceramic, the obtained ceramic chip has good mechanical strength and compactness.

The invention discloses a track kiln for preparing high-strength basalt aggregate from cyanidation tailings, and relates to the technical field of solid waste recycling, the track kiln comprises a base, a track and a kiln car, the track is fixedly mounted at the top of the base, and the kiln car is internally provided with a self-propelled structure and can travel along the track; the device further comprises a side frame fixedly connected to the top of the kiln car, hollow shafts are symmetrically and fixedly connected to the inner side of the side frame, and the sides, close to each other, of the two hollow shafts are fixedly connected with center gears. Raw materials are conveyed in the form of arranging the tunnel kiln, the raw materials are contained in the trays in the conveying process, the materials move in a static mode along with the kiln car, no relative rolling exists between particles, large friction does not exist between the raw materials and between the raw materials and the conveying system, and particle shape damage caused by friction is reduced; the problems that irregular-structure raw material particles outside the raw materials are crushed or rubbed flat due to mutual friction of the raw materials, irregular forms cannot be reserved, and the mechanical property of the aggregate is affected are solved.

The invention relates to the field of robots, in particular to a welding seam polishing robot and a grinding method based on the welding seam polishing robot, the welding seam polishing robot comprises a measurement control system, a connection system, a left side execution unit and a right side execution unit, the left side execution unit and the right side execution unit are the same in structure, and the left side execution unit is connected with the connection system. The left execution unit and the right execution unit are distributed in a mirror symmetry manner; the welding seam grinding robot is symmetrical in structure, can grind and polish welding seams on the two sides of a welding part at the same time, integrates the mechanical technology, the measurement technology and the control technology, can achieve flexibility and automation of grinding and polishing of the welding seams, and has the advantages of being high in machining efficiency, easy to operate, convenient to use and the like.

The utility model discloses a waterproof paint coating device for waterproof and anticorrosive engineering construction, which comprises a fixed plate, a storage barrel fixedly connected to the upper end face of the fixed plate, a spraying rod fixedly connected to one side of the fixed plate, a plurality of uniformly distributed nozzles fixedly connected to the lower end face of the spraying rod, and a lifting rod arranged on one side of the spraying rod. Two connecting rods are fixedly connected to the lower end face of the lifting rod, a scraper is jointly and fixedly connected between the two connecting rods, waterproof paint is effectively sprayed under the action of a storage barrel, a spraying rod and a spraying head, a spiral rod and a lifting block are in threaded connection under the action of a forward and reverse motor, and the spraying efficiency is improved through lifting of the lifting block. And the lifting rod and the scraper are driven to flexibly ascend and descend, the use height of the scraper is accurately adjusted in cooperation with use of the recognition block and the scale plate, it is guaranteed that the scraper can accurately grind the waterproof coating, and the construction quality of the waterproof coating is guaranteed.

The invention discloses an ultrasonic detection auxiliary device and an ultrasonic detection method.The ultrasonic detection auxiliary device is used for achieving indirect coupling of a probe (sensor) and a detected pipeline during ultrasonic detection of a special-shaped welded joint under the condition that weld reinforcement is not ground down, and the ultrasonic detection auxiliary device comprises a box body, a water pipe assembly and a fixing assembly. The box body is variable, so that the bottom of the box body is attached to the outer surface of the detected pipeline and is not influenced by the weld reinforcement; the water pipe assembly is arranged in the box body and used for achieving water filling, water discharging and air discharging in the box body. The fixing assembly and the detected pipeline are magnetically attracted to achieve attachment of the box body and the outer surface of the detected pipeline. According to the ultrasonic detection auxiliary device and the ultrasonic detection method provided by the invention, ultrasonic detection of a special-shaped welding joint at a B-level technical level can be realized under the condition that the weld reinforcement is not ground down, so that a large amount of manpower, materials, electric power and working hours required by grinding down the weld reinforcement are saved; and the influence of dust, noise and the like generated by polishing on the environment and human health is avoided.

The invention discloses a plugging method for a special-shaped hole channel of a complex inner cavity of a casting, and belongs to the technical field of casting manufacturing. Comprising the following steps: grinding one end of a spherical plugging material bead, and spot-welding an assembly traction flexible wire on the ground surface of the material bead; wrapping the plugging material beads by a circle by using adhesive tape brazing filler metal; the ball-plugging-shaped material balls are conveyed to a to-be-brazed position, and the assembling traction flexible wire penetrates through a casting inner cavity corresponding to the whole to-be-plugged hole channel; the spherical plugging material bead is dragged by assembling a traction flexible wire, so that the adhesive tape brazing filler metal is attached to the surface of the inner cavity of the casting and the spherical plugging material bead; and the assembly traction flexible wire is snapped, the casting is moved to a vacuum brazing furnace to be brazed, and the casting with the blocked inner cavity special-shaped hole channel is obtained. According to the method, the sealing quality and efficiency of the special-shaped hole channel of the complex inner cavity of the casting are improved, a more reliable, economical and environment-friendly solution is provided for the field of casting manufacturing through the innovative design and method, development of the casting manufacturing technology can be further promoted, and the requirement for high-performance castings is met.

The present invention belongs to the technical field of material surface treatment, and discloses a method for enhancing the ablation resistance performance of an armature by selective laser melting and injecting refractory metals, which includes the following steps: grinding and cleaning the surface of the armature to be enhanced; designing the selective laser melting and injecting structure on the surface of the armature into different shapes according to the electromagnetic emission working conditions and the ablation characteristics of the armature; setting laser parameters, feeding refractory metal powder onto the surface of the armature to be enhanced based on the shape of the selective laser melting and injecting structure, and using the laser to perform laser melting and injection on the surface of the armature to be enhanced to form a melted and injected layer. After multiple meltings and injections, an enhanced armature composite structure with an alternating distribution of strengthened area melted and injected layers and non-strengthened areas is obtained on the surface of the armature. The present invention can solve the transition ablation problem caused by severe ablation of the armature in existing electromagnetic railguns.

The invention discloses a CCGA device welding column cutting device and cutting method, and relates to the technical field of high-reliability electronic packaging material production, and the CCGA device welding column cutting device comprises a positioning seat, a cover plate and a cutting mechanism; a cover plate is arranged at the top of the positioning seat, and an arc-shaped groove for stably fixing the CCGA welding column is formed between the positioning seat and the cover plate; the cutting mechanism comprises a rotating shaft driven by a motor, and a plurality of cutters are arranged on a shaft body of the rotating shaft at intervals; the positioning seat and the cover plate are provided with open grooves corresponding to the cutters; the cutting mechanism comprises the rotating shaft driven by the motor, the multiple cutters are arranged on the shaft body of the rotating shaft at intervals, after the CCGA welding column strip is cut, the two ends of a CCGA welding column located between every two adjacent cutters are flattened, the length size meets the requirement, therefore, follow-up grinding operation does not need to be conducted, and the production efficiency is high; and in addition, the CCGA welding column strip is sleeved with a protection pipe made of ferromagnetic materials, the CCGA welding column strip is prevented from being bent in the cutting process, therefore, the feeding speed of the cutter can be effectively increased, and the slitting efficiency is greatly improved.

The utility model discloses an anti-dislocation chain production welding machine which comprises a base, guide plates are installed on the two sides of the top end of the base, a U-shaped support is installed at the position, on the outer sides of the guide plates, of the top end of the base, an electric telescopic rod is installed at the top end of the interior of the U-shaped support, and a lifting plate is installed at the bottom end of the electric telescopic rod. And a laser welding head is mounted at the bottom end of the lifting plate. The chains are welded one by one through the guiding effect of the guiding plate, meanwhile, in the up-and-down moving welding process of the laser welding head, the front-and-back reciprocating mechanism is matched, and front-and-back reciprocating translation of the T-shaped polishing plate is synchronously achieved through the effects of the limiting guide groove, the guiding rod, the limiting guide hole and the like; therefore, the T-shaped grinding plate repeatedly rubs the welding surface of the welded chain back and forth, so that the purpose of grinding flat is achieved, and the welding attractiveness is improved.

The utility model discloses a construction project construction plastering machine which comprises a supporting plate, the upper surface of the supporting plate is connected with a stirring barrel, symmetrical electric telescopic plates are arranged above the supporting plate, the front face of one of the electric telescopic plates is connected with a reverse rotation motor, and the outer surface of a rotating rod is connected with a connecting block. The left side face of the connecting block is connected with a first connecting plate, the right side face of the connecting block is connected with a second connecting plate, the left side face of the first connecting plate is connected with an electric push rod, the output end of the electric push rod is connected with a scraper, the two rotating wheels are jointly sleeved with a grinding belt, and the upper surface of the fixing plate is connected with a driving motor. Through the arrangement of the first connecting plate and the second connecting plate, under the cooperation of the reverse motor, a worker can conveniently operate a wall surface through the rotating scraping plate and the grinding belt, and through the arrangement of the grinding belt, the driving motor drives the grinding belt to rotate, so that burrs and uneven positions on the surface of the wall surface are ground and flattened.

The utility model relates to the technical field of seal grinding machines, in particular to a seal grinding machine which comprises a grinding table, the upper end face of the grinding table is fixedly connected with a first supporting plate, and the upper end face of the first supporting plate is slidably connected with a second supporting plate through two first limiting sliding rails; a seal needing to be ground is clamped and fixed through the seal clamping mechanism, the drive mechanism drives the grinding belt to rotate to grind the seal flatly, the seal clamping mechanism drives the seal to rotate and meanwhile cooperates with the cam swing mechanism to drive the second servo motor to swing front and back, and therefore the ground face of the seal is fully ground; and the driving mechanism is adjusted before the seal is polished, so that the pressing angle of the polishing belt is adjusted through the driving mechanism, then the inclination angle of the polishing face of the seal is adjusted, and then the situation that the polishing face of the seal is inclined after the seal is polished is avoided.

The utility model discloses an auxiliary tool for grinding the excess weld metal of a welding seam, which is used for assisting a grinding machine in grinding the welding seam of a welding base material. Comprising a movable adjusting platform and a stabilizing mechanism; the grinding machine is mounted on the movable adjusting platform; the movable adjusting platform is used for moving and adjusting the grinding machine, so that the bottom of a grinding piece of the grinding machine is parallel to the outer tangent line of the weld joint. The stabilizing mechanism is connected with the movable adjusting platform and the welding base metal, and the movable adjusting platform is kept on the surface of the welding base metal through the stabilizing mechanism so that the movable adjusting platform can move along the surface of the welding base metal. The angle of the grinding piece of the grinding machine is adjusted through the movable adjusting platform, movable grinding is achieved, the grinding machine is kept stable through the stabilizing mechanism, and therefore the grinding precision and the flat and smooth effect of the grinding face are guaranteed, welding base metal is not prone to being damaged, and follow-up nondestructive testing and anti-corrosion work of welding seams are facilitated; and operation is easy, time and labor are saved, the requirement for operating skills of operators is lowered, and the grinding efficiency is improved.

The invention discloses a manufacturing method of a stepped copper circuit board with through and blind holes in a thin copper area, and belongs to the technical field of circuit board manufacturing. When the through and blind holes exist in the thin copper area, hole copper requirements of the through and blind holes are preferentially considered for electroplating; after electroplating is completed, the through blind hole is covered with a dry film, and surface copper is thinned to a required copper thickness value of a thin copper area; then, a boss, formed by dry film covering, of the through and blind hole opening is ground to be flat, and a thin copper area pattern is manufactured; covering the thin copper area with a dry film, and electroplating the remaining part to form a thick copper area; and finally, manufacturing a thick copper region pattern to complete the manufacturing of stepped copper. When the method is used for manufacturing the thin copper area, the copper thickness variation of the thin copper area is reduced, and the copper thickness uniformity can be improved; and secondly, after the pattern of the thin copper area is manufactured, the copper thickness of the thick copper area is increased through pattern electroplating, so that the risk of lateral erosion is avoided, and the precision of a finished product circuit is higher.

The invention provides a vehicle-mounted steel bar flexible machining device and method. The device comprises a flat truck; the raw material bin module is used for placing steel bars of different specifications; the movable saw cutting unit is used for cutting the reinforcing steel bars into preset lengths; the excess stock bin is used for collecting reinforcing steel bar waste; the lifting transfer truss is used for transferring the reinforcing steel bars in the picking truss to the movable saw cutting unit or transferring reinforcing steel bar waste cut by the movable saw cutting unit to the excess stock bin; the rib stripping and thread rolling module is used for grinding the end surfaces of the reinforcing steel bars; the bending module is used for bending the reinforcing steel bars; the power control system is used for generating a steel bar production material list and controlling the raw material bin module, the movable saw cutting unit, the lifting transfer truss, the rib stripping and thread rolling module and the bending module to complete steel bar machining according to the steel bar production material list. Nomadic production can be achieved, the steel bar transportation time is shortened, steel bar orders are received on the construction site, sporadic material orders are generated, the suit cutting scheme is optimized, the loss rate is reduced, and the steel bar production scheduling time is shortened.

The invention belongs to the technical field of metal micro-analysis, and particularly relates to a preparation method for EBSD analysis of a polished surface of a sheet sample. The method comprises the following steps: (1) sample interception: intercepting a sample, cleaning with alcohol, and blow-drying; (2) grinding the sample to be flat, namely grinding the section of the sample to be flat, performing low-speed grinding at the rotating speed of 70-100rad / min, sequentially polishing by using diamond suspension liquid with the average particle sizes of 10 mu m, 5 mu m and 1 mu m from 500 # to 2000 # abrasive paper, cleaning by using alcohol, and drying by blowing; and (3) fine polishing of the sample: performing ion polishing, setting voltage and time for the center of a polished surface at an ion beam focus point, and directly applying the fine-polished sample to EBSD analysis. Therefore, the problem that ion beam section polishing cannot be better carried out due to the fact that the upper end face and the lower end face of the machined surface of the sample are not parallel and the thickness of the polished surface is below 1mm is solved.

The application discloses a kind of linear cutting continuous processing methods of seat body large aperture parallel group hole, belong to mechanical manufacturing technical field.This method is first with seat body A face as reference, planing, planing seat body shape and concave surface to drawing size;Again, workpiece is once clamped and aligned, and linear cutting molybdenum wire is used along preset trajectory to continuously cut, and all large aperture through hole is simultaneously processed, and 45° chamfer bevel is reserved at cutting place;Finally, intermittent welding is used to cutting seam, and workpiece temperature is strictly controlled not to exceed 80 DEG C to prevent thermal deformation, and after welding, weld is ground flat to make surface flush with concave surface.The application is characterized by linear cutting without mechanical cutting force, solves the problem that tool is easily appeared in traditional boring machine processing, through hole taper is big, parallelism is poor, effectively guarantees the size and shape accuracy of through hole.Workpiece is only single clamping, and it is free from dependence on high-skilled operators, processing efficiency and product consistency are significantly improved, and it is suitable for batch processing of large-size seat body parallel deep hole of 45 steel.

The invention discloses an anti-corrosion construction process for a gold welding seam of a gasification furnace, which comprises the following steps of: surface treatment: moving along the gasification furnace by using a polishing device, and respectively polishing, derusting, flatly polishing, decontaminating and dedusting original paint layers inside and outside the welding seam; preparing paint, mixing the primer and the finish paint, adding a diluent and a curing agent, and uniformly stirring; primer coating is conducted, specifically, primer coating is conducted after the surface pretreatment experience is qualified, the interval time does not exceed 4 hours, and the treated surface is not allowed to be exposed in air for a long time; after the middle paint, the finish paint and the primer are completely dried, namely, the middle paint, the finish paint and the later paint can be brushed only after the surface of the former paint is dried, so that excellent interlayer adhesive force is ensured, and the interval time does not exceed 48 hours; and handing over for acceptance. Through a whole set of complete construction process of surface treatment, paint preparation, primer coating, intermediate and finishing coat coating and acceptance inspection on the welding seam of the gasification furnace, the welding seam can be subjected to anti-corrosion treatment, so that the welding seam meets the anti-corrosion requirement.

The invention discloses a method for repairing defects on a polished surface of a femoral condyle test mold. The method comprises the following steps: detecting the polished surface of the femoral condyle test mold and marking the defects; the femoral condyle test mold is fixed to a special clamp, a rotary grinding machine is adopted to be matched with a micro pneumatic rotating head, fixed-point drilling is conducted on a defect area, and micro pits are formed after digging-out; welding wires are fused through pulse laser spot welding equipment, the micro pits are filled in a layered mode, and filling bosses are formed; a high-speed electric grinding machine provided with a red nylon polishing wheel is used for conducting layered grinding on the filling boss; and a wool wheel is sequentially matched with metal polishing paste to polish the repaired area, the smoothness is gradually improved till the area is consistent with the original polished surface in glossiness and roughness, finally, the surface of the test mold is cleaned, and the residual polishing agent and impurities are removed. According to the method, the process of defect marking mechanical excavation, laser filling welding, layering, grinding and progressive polishing is adopted, localization treatment is conducted on the defects, the overall size change is avoided, and therefore accurate repairing of the defects is achieved.

The utility model discloses an automatic steel bar end cutting and grinding device which comprises a bottom plate and a first supporting block arranged in the bottom plate, and a cutting blade is installed in the first supporting block. And the first driving motor is installed on the left side of the first supporting block, a first electric telescopic rod is fixedly connected to the lower end of the first supporting block, and a first conveyor is arranged on the upper side of the bottom plate. According to the automatic steel bar end cutting and grinding device, grinding parts can be conveniently detached and taken out after use, so that the grinding effect of the device on steel bars is not easily affected by the abraded grinding parts, the grinding quality of the device is improved, the maintenance and repair efficiency of the device is improved, meanwhile, the steel bars are conveniently blocked and limited in the use process, and the service life of the device is prolonged. And the reinforcing steel bars are not prone to position deviation in the cutting or grinding process in the device, the reinforcing steel bar machining effect of the device is improved, and the better using effect is achieved.

The utility model provides a full-automatic concrete core sample processing and forming machine, which belongs to the technical field of concrete core sample processing and forming and comprises a cutting and grinding component and a core sample fixing component. The cutting assembly comprises a rack I, a cutting and grinding sliding table, a sliding table driving mechanism, a cutting and grinding shaft, a cutting and grinding blade and a cutting and grinding shaft driving mechanism; the core sample fixing assembly comprises a rack II and a core sample clamping frame; the forming machine is novel simple equipment, and compared with a method that a cutting machine and a grinding machine are used in cooperation, the forming machine is easy to manufacture, low in material consumption, small in occupied area, capable of being suitable for machining long concrete core samples such as tunnel inverted arches and the like, capable of achieving machining of a plurality of concrete core samples at a time, capable of improving the machining efficiency of the concrete core samples and high in practicability. The method is convenient and fast, saves labor and time, is high in cost performance, and has wide popularization value.

The invention relates to the technical field of ceramic materials, in particular to an aluminum nitride heating sheet and a preparation method thereof.The preparation method of the aluminum nitride heating sheet comprises the following steps that S1, granulation is conducted, specifically, aluminum nitride, a sintering aid and an organic binder are mixed and granulated; s2, pre-pressing forming is conducted, specifically, a three-section pre-pressing process is adopted for green body forming; s3, glue discharging and sintering: performing glue discharging in a glue discharging furnace, and sintering in a graphite furnace with a nitrogen protective atmosphere and a flow rate of 25-40ml / min; the sintering temperature is 1300-1550 DEG C, and the temperature is kept for 50-60 And S4, cooling and grinding, wherein the sintered body is cooled to the normal temperature and ground to be flat. According to the preparation method disclosed by the invention, the obtained heating sheet has good mechanical strength and thermal conductivity.

The utility model discloses an elbow welding spot grinding device, which relates to the technical field of elbow installation and comprises a supporting plate, a supporting mechanism is arranged on the lower surface of the supporting plate, a sliding groove is formed in the inner wall of the supporting plate, a sliding rod is connected to the inner wall of the sliding groove in a sliding mode, a movable plate is rotatably connected to the outer surface of the sliding rod, and the movable plate is fixedly connected to the lower surface of the supporting plate. The number of the movable plates is two. The bent pipe polishing device is reasonable in design structure, the polishing belt can be driven by the two movable plates and the tension spring to extrude a bent pipe, the power mechanism drives the polishing belt to polish the bent pipe, meanwhile, the movable plates are controlled to rotate back and forth with the bent pipe as the center, and therefore the positions, not polished, of the right sides of the movable plates are polished; and the effect of polishing a circle of the bent pipe is achieved, so that the problem that polishing is generally conducted manually through a polishing wheel in the construction site, the angle of a polishing piece needs to be repeatedly adjusted to guarantee that the circle of the bent pipe is completely polished, and the operation is troublesome is solved.

The utility model discloses a wire rod raw material sampling and processing device for welding wire production, which comprises a working table, a ball screw module is arranged on the working table, the ball screw module comprises a base, a guide rail, a screw and a sliding seat, one end of the screw is connected with a first motor through a coupler, a sample fixing device is arranged on the sliding seat, and the first motor is connected with a second motor through a coupler. The ball screw module is used for clamping and fixing a to-be-processed sample, an aligning device, a cutting device and a grinding device are arranged on the two sides of the ball screw module in the length direction respectively and used for arranging and aligning the sample, cutting the two ends of the sample and grinding the cutting face of the sample, a long sample material is sheared firstly, and then secondary cutting and end face grinding are conducted at the same time; a plurality of sample materials are processed at the same time, so that the working efficiency is effectively improved; the samples are sequentially subjected to push plate alignment and fixed cutting, the same length after cutting can be effectively guaranteed, and large deviation of subsequent detection caused by length errors of the samples can be effectively prevented during subsequent sample conveying detection.

The utility model discloses a ditch plastering device based on water conservancy construction, which belongs to the technical field of water conservancy projects, and comprises a smoothing box body, a fixing shell is fixedly connected in the smoothing box body, one end of the fixing shell is fixedly connected with two fixing rods, and the fixing rods are fixedly connected with the smoothing box body. One end of the fixing rod is fixedly connected with a plastering plate, the inner side of the plastering plate is fixedly connected with a linkage rod, and the other end of the linkage rod is fixedly connected with a moving cylinder. According to the ditch plastering device based on water conservancy construction, the fixing rod, the plastering plate and the rotating rod are arranged, the moving cylinder is pressed downwards in the fixing cylinder, the moving cylinder drives the rotating rod to move downwards when moving downwards, the moving rod drives the plastering plate to move, and due to the arrangement of the fixing rod, the plastering plate is opened, so that the plastering plate can be conveniently plastered; and by adjusting the plastering plate, the ditches with different widths can be conveniently troweled, the pressure of workers is effectively reduced, the efficiency is improved, and a large amount of time is saved.

The invention discloses a method for repairing a blade damping table through combination of argon arc welding and supersonic spraying, and belongs to the technical field of aviation part repairing. The method comprises the following steps: firstly, repairing cracks of the damping table through argon arc welding, and ensuring the welding quality through nondestructive testing and stress relief heat treatment; then, the welding repair area is ground down; spraying a high-cobalt-molybdenum-chromium wear-resistant coating with specific components on the end surface by adopting a high velocity oxy-fuel spraying technology; and finally, the design size is recovered through accurate grinding. The coating prepared through high velocity oxy-fuel spraying has the outstanding advantages of high density, high hardness and high bonding strength, the crack defect is thoroughly eliminated, the size is recovered, the abrasion resistance and corrosion resistance of the blade damping table are remarkably improved, the service life of the blade is prolonged, economic benefits are remarkable, and the application prospect is wide. And the method is suitable for remanufacturing high-value precision parts such as aero-engines.

The invention discloses a numerical control machining method for a conical composite die based on datum hole positioning. The numerical control machining method comprises the following steps that S1, the bottom face of the conical composite die is ground to be flat, and a positioning pin hole is formed; s2, machining a reference hole of the flat plate; s3, clamping the mold; a positioning pin hole in the bottom face of the conical composite die is aligned with the flat plate datum hole, and a positioning pin is driven in; s4, carrying out three-coordinate detection; s5, performing numerical control machining on the conical composite die; and S6, rechecking and correcting. According to the machining method of datum hole positioning and flat plate fixing, the detection datum plane is established by grinding the bottom face of the conical composite mold to be flat, the datum hole is prefabricated in the flat plate to achieve mold positioning, the machining allowance is adjusted with the datum hole as the reference, and the problems of datum establishment and allowance control of the conical composite mold are solved.

The invention discloses welding equipment for chemical reaction kettle end cover machining, and relates to the technical field of reaction kettle welding, the welding equipment comprises a supporting plate, a correcting plate is slidably mounted on one side of the supporting plate, and a reaction kettle and an end cover are preliminarily positioned through the supporting plate and the correcting plate; according to the welding equipment for processing the end cover of the chemical reaction kettle, when the bottom plate rotates, the whole locking assembly is synchronously driven to rotate, so that the end cover rotates, meanwhile, the supporting plate slowly moves towards one end of the end cover until the end cover is completely attached to the end part of the reaction kettle, the welding equipment is stopped, and the stopped connecting part is detected; and the locking assembly is driven to continuously rotate, the uneven part is ground to be flat, it is guaranteed that the reaction kettle makes contact with the end cover flatly, and the attached end cover and the reaction kettle are welded. Therefore, the overall welding efficiency is improved, and errors and deformation possibly caused by the uneven contact surface of the reaction kettle and the end cover in the welding process are reduced.