142 results about "Diamond wire saw" patented technology

The invention discloses an intelligent control method and system for the thickness of a nickel plating layer of a diamond fretsaw, and relates to the technical field of intelligent control. The method comprises the steps that a combined nickel plating constraint space and a reinforced nickel plating constraint space of a combined nickel plating tank and a reinforced nickel plating tank are established; optimizing and generating combined nickel plating parameters of the combined nickel plating tank; executing a combined nickel plating process, detecting the thickness distribution of a combined nickel plating layer, completing a carborundum electroplating process, and detecting the carborundum distribution density; and dynamic reinforcing nickel plating parameters are generated and adjusted, a reinforcing nickel plating tank is configured according to the dynamic reinforcing nickel plating parameters, and a second nickel plating procedure is executed to achieve intelligent thickness control. The technical problems that the plating thickness control precision is insufficient, the product quality stability is poor and the production efficiency is low due to the fact that an existing diamond fretsaw nickel plating layer thickness control method cannot accurately adapt to bus base material characteristic fluctuation, plating solution state change and personalized requirements in the production process are solved.

The utility model discloses unmanned underwater pile foundation automatic cutting equipment, which comprises a truss main body, a pneumatic pile holding system and a diamond wire saw cutting system, and is characterized in that the underwater pile foundation automatic cutting equipment is hoisted above a pile foundation to be subjected to pile cutting through hoisting equipment; after the direction and the position are adjusted, the hoisting equipment loosens a hook, and the underwater pile foundation automatic cutting equipment sinks to the specified elevation; the air compressor is started, so that the pneumatic pile holding device clamps the pile foundation; a hydraulic diamond wire saw cutting system power supply is started to cut the pile foundation; and after cutting is completed, hoisting equipment is used for hoisting the pile foundation and the underwater pile foundation automatic cutting equipment to a designated position together. According to the utility model, divers do not need to operate underwater, so that the potential safety hazard of underwater operation of the divers is fundamentally eliminated; pile foundation notches are neat, no concrete fragments exist, the cutting quality is high, and follow-up piling construction is not affected; the device is not influenced by tide, water flow and water depth and is wide in application range.

The invention provides a diamond wire saw steel ball detection method based on improved yov8. The diamond wire saw steel ball detection method comprises the following steps: S1, acquiring an original image of a diamond wire saw bead; labImage label images are used for marking beads, and data of a training set, a verification set and a test set are formed according to the proportion; s2, carrying out the preprocessing of the image, carrying out the zooming of the image, and carrying out the preprocessing of the image through employing an improved Retinex algorithm; s3, the yov8 model is improved, and an illumination invariant feature extractor (LIF) is added into the backbone; a CA attention mechanism is integrated in a C2f module, and a small target detection head is added and a large-scale detection head is deleted based on small bead size change, so that the small target detection head is used for detecting a bead small target; and S4, optimizing a loss function of the yolov8, improving the small target detection precision by using an improved IoU loss function, and training by using an improved yolov8 model to obtain a training result best.pt file.

The utility model belongs to the technical field of diamond fretsaw machining, and particularly relates to electroplating equipment for diamond fretsaw machining, which comprises a bottom plate, a cleaning box, an electroplating device, an electroplating device and an electroplating device. The electroplating box is fixedly mounted at the top of the bottom plate, inlets and outlets are formed in the inner walls of the tops of the cleaning box and the electroplating box, and liquid outlets fixedly communicate with the rear sides of the cleaning box and the electroplating box; the number of the stand columns is two, and the bottom ends of the two stand columns are fixedly installed on the top of the bottom plate; the left end and the right end of the electric sliding rail are fixedly installed between the two stand columns respectively, switching between cleaning and electroplating of the diamond wire is achieved through a simple structure, manual operation transposition of personnel is not needed, meanwhile, drying operation after cleaning and electroplating of the diamond wire can be achieved, the drying efficiency is improved, and the working efficiency is improved. The machining process is high in automation degree, time-saving and labor-saving, and the electroplating efficiency and effect are greatly improved.

The invention provides an online temperature control coordinated regulation and control method and system for diamond fretsaw electroplating baths, and relates to the technical field of process control over the temperature of the electroplating baths, and the method comprises the steps that the temperature of each electroplating bath and the flow rate of a plating solution are collected through a sensor, and the heat conduction strength is calculated in combination with the distance between the baths; determining a risk slot position according to the heat conduction intensity, marking the priority, and expanding to obtain an interfered slot position; packaging interference risk data through an instant sharing protocol, and transmitting and acquiring feedback information through a high-speed communication bus; correcting abnormal data, marking risk attributes to generate a temperature fluctuation vector, extracting peak value characteristics to obtain a production line wave and trend, and generating a linkage adjustment instruction sequence; kalman filtering is adopted to optimize instructions and distribute the instructions, and response delay is monitored; and if the delay exceeds the threshold value, classifying abnormal modes through a support vector machine to obtain a defect prediction label, and iteratively adjusting the current density and the pH value of the plating solution. The process defects caused by temperature fluctuation and delay are effectively avoided, and the stability of the electroplating process is guaranteed.

The utility model relates to an efficient cutting diamond fretsaw, and belongs to the technical field of cutting equipment, the efficient cutting diamond fretsaw comprises a workbench, the workbench is provided with a clamping mechanism used for clamping a workpiece, the top surface of the workbench is provided with a guide inclined surface, and the inclined lower end of the guide inclined surface is provided with a chip collecting groove; an air blowing pipe with the two ends closed is horizontally arranged at the inclined upper end of the guide inclined face, an air nozzle is arranged on the air blowing pipe, and a plurality of air blowing holes are formed in the side, close to the chip collecting groove, of the air blowing pipe and all face the guide inclined face. After the air nozzle is externally connected with the air source, the air blowing pipe blows air towards the clamping mechanism through the air blowing hole, the fret saw body passing through the clamping mechanism can be efficiently blown in time, so that chips on the surface of the fret saw body are removed, and the situation that the cutting performance is reduced due to the fact that a diamond cutting edge of the fret saw body is covered with the chips is avoided; therefore, the sharpness of the diamond cutting edge on the surface of the fret saw body is guaranteed, and the cutting efficiency of the fret saw is improved.

The utility model relates to a bidirectional adjusting type loop wire tensioning mechanism, which belongs to the technical field of diamond wire saws, and comprises a working table, and the working table is provided with a supporting assembly used for driving an annular core wire to circularly move along the axial direction of the annular core wire; the supporting assembly comprises a driving wheel, a fixed-point transmission wheel and a vertical adjusting wheel which are arranged at intervals in the path direction of the annular core wire, the driving wheel is driven by a power source to rotate, the fixed-point transmission wheel is rotationally arranged on the workbench, and a transverse moving mechanism and a lifting mechanism are arranged on the workbench; the transverse moving mechanism is used for driving the driving wheel to move in the length direction of the workbench, and the lifting mechanism is used for driving the vertical adjusting wheel to move up and down. Through two-way tensioning adjustment, the length difference value of the annular core wire required by production can be shared, the tensioning adjustment requirements of the annular wires with different lengths are met, meanwhile, the limitation that the one-way movement distance is too long during one-way tensioning adjustment is improved, and optimization of the overall space layout is facilitated.

The present invention discloses a method for reducing the wire jam rate of diamond wire sawing of single crystal silicon wafer ingots. When cutting a single crystal ingot, the wiring between the diamond wire net and the guide wheel main rollers of two slicers is staggered groove wiring, and the number of staggered grooves is 2 to 4; the method comprises a first guide wheel, a second guide wheel and a diamond wire; the diamond wire is initially wired with one end connected to the first groove of the second guide wheel and the other end connected to the 3-5 grooves of the second guide wheel; the next connection point is the second groove of the first guide wheel; the next connection point is the 4-6 grooves of the second guide wheel, and so on and so forth to form a staggered groove wiring mode; and the groove depth h of the guide wheel grooves of the first guide wheel and the second guide wheel is optimized; on the one hand, the wire jam rate is greatly reduced to close to 0; the scratches on normal silicon wafers caused by wire jams and the steel wire loss caused by wire breakage caused by wire jams are completely solved; at the same time, the operation time caused by wire jam processing is reduced, and the efficiency of a single machine is improved.

The invention relates to the technical field of silicon carbide machining, in particular to a silicon carbide disc-shaped part roughing device and method.The device comprises a horizontal moving device, a sliding platform, an adjustable tool and a cutting mechanism, the cutting mechanism comprises a wire wheel and a cutting wire, the cutting wire is a diamond wire saw, and the cutting area of the cutting wire is arranged in the longitudinal direction; the sliding platform is driven by a horizontal moving device and moves in a horizontal plane, a driving motor and a rotating table are arranged on the sliding platform, and the rotating table drives the adjustable tool to coaxially rotate in the horizontal plane; the adjustable tool comprises a chuck and a clamping block, the clamping block is in a multi-step shape, and an adsorption hole is formed in the highest placing face. The vertical cutting mode is adopted, the diamond fretsaw is used for rough machining of the inner ring and the outer ring of the disc-shaped part, the machining efficiency is effectively improved, material damage is reduced, the machining equipment cost is reduced, and the material utilization rate is increased.

The invention belongs to the technical field of diamond wire saws, and discloses a weighing and classifying device and method for a steel substrate for a diamond wire saw, and the weighing and classifying device comprises a feeding mechanism, a weighing mechanism and a conveying and discharging mechanism; the feeding mechanism comprises a feeding guide rail for feeding materials to the weighing mechanism; the feeding guide rail comprises a horizontal section and an inclined section connected to the discharging end of the horizontal section, a liftable feeding ejector rod is arranged at the position of the horizontal section, a liftable feeding stop lever is arranged at the position of the inclined section, and the inclined section intermittently feeds materials to the weighing mechanism through lifting cooperation of the feeding ejector rod and the feeding stop lever. And at least the top of the feeding ejector rod is provided with a material guiding inclined surface facing the discharging end of the feeding guide rail. A material blocking step facing the feeding end of the feeding guide rail is at least arranged at the top of the feeding blocking rod. According to the feeding device, small pieces such as bead steel substrates can be divided at a high speed according to the weight, intermittent feeding can be effectively achieved during feeding, and therefore the accuracy of the weighing result is guaranteed.

The diamond multi-wire cutting machine control system comprises a diamond wire saw, a first take-up and pay-off wire storage module, a second take-up and pay-off wire storage module, a first wire guide wheel, a second wire guide wheel, a main shaft cutting grooved wheel module and a control module. A diamond wire saw is led out from the first take-up and pay-off wire storage module, sequentially passes through the first wire guide wheel, the main shaft cutting grooved wheel module and the second wire guide wheel and is finally wound on the second take-up and pay-off wire storage module, a first displacement sensor is arranged on the first wire guide wheel, and a second displacement sensor is arranged on the second wire guide wheel. The control module is used for receiving signals of the two sensors, calculating the current line bow height in real time based on a preset line bow calculation model, and adjusting the feeding speed of the spindle cutting grooved wheel module according to the comparison result of the actual line bow height and a preset target. The wire bow height can be calculated, the feeding speed of the main shaft is effectively adjusted through closed-loop control, the cutting precision and stability are guaranteed, and shutdown can be conducted in time when abnormity occurs.

The present invention discloses a 16-wire machine for a diamond wire saw, belonging to the technical field of diamond wire saw processing, including a retractable wire box, a placing plate installed at the bottom of the retractable wire box, a plurality of active retractable wire wheels arranged in two rows on the placing plate, an adjustment plate installed at the top of the retractable wire box, a tension adjustment mechanism used in conjunction with the active retractable wire wheels on the adjustment plate; an oil removal electrolytic cell, which is used to electrolytically remove oil from the diamond busbar discharged from the wire release box, the oil removal electrolytic cell is arranged at the rear side of the wire release box; an ultrasonic cleaning mechanism, which is used to clean the diamond busbar, the ultrasonic cleaning mechanism is arranged at the rear side of the oil removal electrolytic cell. The present invention ensures that the diamond sand is evenly dispersed when sprayed into the primary electroplating tank through a sanding water pump, thereby ensuring that the diamond sand can be evenly and comprehensively attached to the diamond wire busbar during the electroplating process, thereby ensuring a good sanding effect.

The invention discloses a diamond string bead, a preparation method of the diamond string bead and a preparation method of a diamond wire saw. The preparation method of the diamond string bead comprises the following steps: adding cylindrical powder mixed with an organic binder into a die cavity of a main die; adding a plurality of diamonds into a die cavity of the main die according to a first rule, wherein the plurality of diamonds are positioned in the cylindrical powder; the lower pressing head is moved upwards, the upper pressing head is moved downwards, pressure is applied to the column powder and the diamonds in the die cavity from the upper side and the lower side, and a metal column containing multiple diamonds is formed through cold pressing; taking out and carrying out pressureless sintering on the metal cylinder; the carcass powder is added into a cold pressing die cavity; feeding the sintered metal cylinders into a cold pressing die cavity, arranging the metal cylinders in the cold pressing die cavity according to a second rule, and inserting the metal cylinders into the matrix powder; carrying out cold pressing treatment on the carcass powder and the metal cylinder to obtain a bead string working layer; and hot-pressing and sintering the bead working layer to obtain the diamond bead.

The invention discloses a traction wheel for manufacturing a diamond fretsaw and a manufacturing method, and relates to the technical field of electroplating, the traction wheel comprises a rack, a conveying mechanism, a traction wheel mechanism and a take-up mechanism, the rack is provided with the conveying mechanism, the traction wheel mechanism and the take-up mechanism; by arranging the conveying mechanism, wires can be automatically conveyed, base lines can be limited, and wire jumping is prevented; the conductive impeller and the traction wheel are designed in a split mode so that the conductive impeller can be replaced and overhauled conveniently, conductive liquid can be stirred through rotation of the conductive impeller, components in the conductive liquid can be effectively and evenly dispersed, and the precipitation and layering phenomena are prevented; the universal traction wheel mechanism is matched with the take-up mechanism, so that electroplated wires can be automatically wound.

1. The name of the design product: diamond wire cutting machine. 2. The use of the design product: for cutting hard material. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The invention discloses a tungsten alloy diamond wire saw and a preparation process thereof, which relates to the technical field of tungsten alloy materials. The invention comprises the following elements by weight percentage: Re 0.1-5%, La 0.2-1.5%, Ce 0.1-2%, Y 0.1-2%, Ni 1-10%, and the rest being W and essential impurities. The wire diameter of the tungsten alloy diamond wire saw is 8-150 μm. The process comprises wire laying → electrolytic alkali washing → ultrasonic water washing after alkali washing → acid activation → water washing → pre-plating → sanding → thickening 1 → thickening 2 → ultrasonic water washing after thickening → drying → online detection → wire winding. The process of the invention can significantly improve the strength of the tungsten alloy diamond wire saw. Adding elements can also improve the toughness and strength of the alloy wire, making it not easy to break during use, greatly improving the quality of the tungsten alloy diamond wire saw and prolonging its service life.

The invention belongs to the technical field of diamond wire quality detection, and discloses a method for detecting the number of effective exposed abrasive particles of a diamond fretsaw, which comprises the following steps of: acquiring a section profile diagram of the diamond fretsaw with a selected length passing through a center line, and establishing a section profile curve of the fretsaw; performing data smoothing processing on the data on the fretsaw section contour curve by using an average value method to obtain a fretsaw section contour smooth curve; by adopting a gradient direction change principle, obtaining a peak point of an exposed abrasive particle on the smooth curve of the section contour of the fretsaw and a valley point between the two abrasive particles, and correspondingly recording coordinate values of the peak point and the valley point; according to the coordinate values of the adjacent peak points and the coordinate value of the valley point between the adjacent peak points, whether the exposed abrasive particles of the adjacent peak points are adhered or not is judged, and the number of effective exposed abrasive particles is obtained. According to the method, non-effective exposure abrasive particles can be effectively eliminated, and online monitoring of the exposure rate is achieved.

The present invention discloses a single-crystal silicon rod diamond wire saw cutting device and a cutting method. The cutting device includes: a loading platform, a mechanical clamping mechanism, a guide wheel cutting mechanism, a blanking platform, a base, a vision detection unit, and a controller; the mechanical clamping mechanism is placed above the loading platform; the guide wheel cutting mechanism includes: a diamond wire saw and a plurality of guide wheels; the plurality of guide wheels are symmetrically arranged, one side of the diamond wire saw is wound around the outside of the plurality of guide wheels, and the guide wheels drive the diamond wire saw to rotate; the loading platform, the mechanical clamping mechanism, the guide wheel cutting mechanism, and the blanking platform are all arranged on the top of the base, and the mechanical clamping mechanism is slidably connected to the base; the vision detection unit is arranged on the top of the base and faces the guide wheel cutting mechanism; the mechanical clamping mechanism, the guide wheel cutting mechanism, and the vision detection unit are respectively connected to the controller. The cutting device of the present invention can avoid chipping during cutting, and the workpiece processing quality is good.

The application discloses a manufacturing method of a diamond wire saw by using extrusion-upsetting resistance welding and pre-fixing beads, and comprises the following steps: step one, cutting a steel wire rope into a certain length and placing the steel wire rope on an extruder to extrude and upset a small step; step two, threading a bead on the steel wire rope and making the bead adhere to the small step, and fixing and connecting the outer end of the bead with the steel wire rope; step three, placing the steel wire rope on the extruder and extruding and upsetting another small step L by using an extrusion head; step four, threading a spring on the steel wire rope, making the spring abut against the bead, threading another bead on the steel wire rope; step five, fixing and connecting the outer end of the another bead with the steel wire rope and ensuring that the another bead abuts against the another small step; and step six, repeating the steps three, four and five until the fixing of the beads of the whole wire saw is completed. The application can realize more firm pre-positioning of the beads, reduce the requirement for the rubber vulcanization hardness, improve the production efficiency, and improve the quality and service life of the wire saw.

The invention discloses a cooling device of a diamond fretsaw in the technical field of diamond fretsaws, which comprises a fretsaw and a support table, the support table is located below the fretsaw, the upper position of the support table is fixedly connected with a protective box, and the fretsaw penetrates through the protective box from left to right; a cutting table is arranged in the protection box and located below the fret saw, and a protection door is rotationally connected to the protection box. A filtering mechanism is arranged in the protection box and is used for filtering chippings contained in water sprayed by the water pumping mechanism and enabling the filtered water to flow back into the water tank; a replacement mechanism is arranged on the protection box, and the replacement mechanism is used for automatically replacing a filtering plate, used for filtering, of the filtering mechanism when the protection door is opened after cutting is completed; according to the device, most of water can be effectively prevented from splashing by arranging the protection box and the protection door, so that the splashing water can be effectively prevented from polluting a working site, and the waste of cooling water is avoided.

The invention discloses a preparation method of a battery shell, a battery and electronic equipment, the preparation method of the battery shell comprises the following steps: a tubular workpiece is conveyed to a multi-wire cutting unit for cutting to obtain a plurality of shell rough blanks, and the multi-wire cutting unit comprises rotating rollers and cutting wires wound between the rotating rollers; the inner walls and the cutting faces of the multiple shell rough blanks are subjected to surface cleaning, and a semi-finished shell is obtained; cleaning the outer surface of the semi-finished product shell to obtain a finished product battery shell; wherein the battery shell is made of steel, and the cutting line comprises a plurality of diamond wire saws which are arranged on the same plane in parallel. According to the preparation method of the battery shell, the cutting precision can be improved, the cutting efficiency can be greatly improved, and the cost is saved.

The utility model provides a kind of underwater diamond rope saw cutting device, including rack, clamping mechanism for clamping conduit rack is equipped on the rack, and cutting mechanism is slidably connected with the rack, wherein, the cutting mechanism includes the frame configured as U-shaped structure, and the wheel assembly that is allowed to cut the conduit rack to rotate to cut diamond string bead rope is set on the frame.

The utility model provides a high-wear-resistance diamond wire saw bead string. The high-wear-resistance diamond wire saw bead string comprises a bead string base body and an abrasive particle layer. The abrasive particle layer is arranged on the outer surface of the bead string base body in a sleeving mode and fixedly connected with the bead string base body. The grinding wheel is characterized in that the abrasive particle layer comprises a matrix, high-entropy alloy particles and diamond particles, and the high-entropy alloy particles and the diamond particles are distributed in a dispersed mode and embedded into the matrix; by the adoption of the technical scheme, the high-entropy alloy particles are embedded into the matrix in a dispersed distribution mode, it is guaranteed that the high-entropy alloy particles are enough to support each diamond particle, the abrasion speed of local eccentric abrasion caused by uneven local stress of the bead string is reduced, the abrasion resistance and stability of the bead string are improved, and therefore the service life of the bead string is prolonged, and the service life of the bead string is prolonged. And the service life of the rope saw is prolonged.

The utility model discloses a 16-wire machine for a diamond wire saw, which belongs to the technical field of diamond wire saw processing and comprises a take-up and pay-off box, a placing plate is mounted at the bottom in the take-up and pay-off box, a plurality of driving take-up and pay-off wheels are arranged on the placing plate in two rows, and an adjusting plate is mounted at the top in the take-up and pay-off box. The adjusting plate is provided with a tension adjusting mechanism used in cooperation with the driving take-up and pay-off wheel. The deoiling electrolytic tank is used for carrying out electrolytic deoiling on the diamond bus discharged from the pay-off box, and the deoiling electrolytic tank is arranged on the rear side of the pay-off box; and the ultrasonic cleaning mechanism is used for cleaning the diamond bus, and the ultrasonic cleaning mechanism is arranged on the rear side of the deoiling electrolytic bath. According to the invention, the sand feeding water pump ensures that diamond sand is uniformly dispersed when being sprayed into the primary electroplating bath, so that the diamond sand can be uniformly and comprehensively attached to a diamond wire bus in the electroplating process, and a good sand feeding effect can be ensured.

The diamond wire saw bead structure suitable for the sulfur-containing working condition comprises a base body and a matrix working layer fixedly arranged on the outer wall of the base body, a through hole extending in the axial direction is formed in the center of the base body, and the axial length of the base body is larger than that of the matrix working layer. Two longitudinal grooves penetrating through the axial length of the tire body working layer are formed in the peripheral surface of the tire body working layer, and are perpendicular to two end surfaces of the tire body working layer. The longitudinal grooves which are perpendicular to the upper end face and the lower end face of the tire body working layer and penetrate through the tire body working layer in the axial length direction are formed in the peripheral face of the tire body working layer, so that when axial cutting feed is adopted for mining sulfur-containing ore, the chip removal and drainage capacity can be improved, the cutting efficiency and the cutting service life are guaranteed, and the service life of the tire body working layer is prolonged. And meanwhile, the steel wire rope can be better protected from being broken.

The utility model relates to diamond wire saw technical field discloses a kind of hand-held tension meter correction device, including support, placement plate, locking piece, boom, hanging line and weight;The placement plate and the locking piece are all located in the support, the placement plate and the locking piece are oppositely arranged, the placement plate is used to place hand-held tension meter, the locking piece is used to be fixedly locked hand-held tension meter in the placement plate;One end of the boom is connected with the support, the other end of the boom is connected with one end of the hanging line, and one end of the hanging line away from the boom is connected with the weight.The utility model's scheme can correct the precision of hand-held tension meter itself.

The application discloses a diamond wire surface modification liquid, a diamond wire surface modification method and a diamond wire saw, and belongs to the technical field of photovoltaic materials. The diamond wire surface modification liquid comprises the following components: 0.1-5% of an emulsifier, 5-30% of an oil phase compound, 0.1-0.5% of a surfactant, and the balance of water, and the total amount is 100%. The diamond wire surface modification method comprises the following steps: immersing nickel-plated diamond wire into the above-mentioned modification liquid to perform infiltration modification, thereby obtaining infiltrated diamond wire; and drying the infiltrated diamond wire, thereby obtaining surface-modified diamond wire. The modified diamond wire has stronger hydrophilicity, can effectively bring cutting liquid components into a cutting slit, is favorable for reducing the generation of wire marks in the cutting process, and improves the quality of produced silicon wafers; the use of high-cost wetting agent components can be reduced or avoided, the use of wetting agents with low surface tension can be reduced or avoided, and the generation of foam can be reduced.

The utility model discloses a diamond fretsaw sanding device, which belongs to the technical field of diamond fretsaw production equipment and comprises a base and a sanding barrel fixed above the base. A stirring rod is arranged in the upper sand barrel, and an extension plate is fixedly connected to the stirring rod; according to the diamond fretsaw sanding equipment, a stirring rod is driven to rotate through a transmission part, an extension plate on the surface is driven to stir a plating solution and diamond particles in a sanding barrel, meanwhile, a pressing part is controlled to move through the transmission part, air is sucked in from the outside through an air suction pipe on a sealing barrel, and then the air enters an air blowing block through an air outlet pipe; and then the diamond particles are sprayed out from the filter screen holes in the extension plate, and the diamond particles which are about to descend to the bottom of the sand feeding barrel are blown upwards, so that the diamond particles can be prevented from settling to the bottom of the sand feeding barrel, the diamond particles can be in full contact with the steel wires, and the quality of the produced steel wires is better.

This invention provides a method for manufacturing a diamond wire saw for cutting silicon carbide single-crystal substrates. First, impurities are removed from the diamond micro-powder abrasive. During the abrasive application process, the abrasive density *a* on the steel wire is monitored in real-time via images and videos, and the feeding rate of the diamond micro-powder abrasive in the feeding container is controlled accordingly, achieving a first-step closed-loop control. In the subsequent nickel plating thickening process, the concentricity of the thickened layer on the steel wire and the continuous stability of its thickness are controlled. Before winding, the wire saw diameter *d* is measured using a laser method. Based on the mapping relationship between the wire diameter *d*, abrasive density *a*, and plating thickness *c*, a second closed-loop control is implemented for the entire wire saw production process. The two closed-loop controls operate nested together, ensuring precise control throughout the entire process. The diamond wire saw obtained by this method exhibits high continuous stability in various performance indicators, ensuring good process stability during the cutting of single-crystal silicon carbide substrates, thereby reducing cutting risks.

The present invention relates to a cutting method for an ultra-fine diamond wire saw. The method includes: taking the position where the silicon ingot just contacts the wire mesh as the zero point, and starting to cut the silicon ingot from the position with a coordinate of -1 mm along the direction from the take-up wheel to the pay-off wheel; during cutting, the silicon ingot on the crystal bonding plastic plate is cut in a segmented manner by an ultra-fine diamond wire, including a low-position cutting stage, a middle-position cutting stage, and a high-position cutting stage that are continuously carried out in sequence. Moreover, during the cutting process, the silicon ingot moves in a one-way uniformly variable speed manner towards the ultra-fine diamond wire mesh, and at the same time, the ultra-fine diamond wire mesh makes a reciprocating cyclic motion. The cutting of the silicon ingot by the ultra-fine diamond wire saw is realized, which can effectively reduce wire breakage, improve the yield and quality of silicon wafer production. At the same time, the wafer yield can be increased by the ultra-fine diamond wire saw, thereby improving the production efficiency of silicon wafers.