171 results about "Spark discharge" patented technology

The present invention relates to the technical field of electric spark discharge machining, and discloses an electrode structure, an electric spark machining device and a machining method, wherein the electrode structure includes a connecting member, whose axis is a first axis, and one end of the connecting member has a mounting portion; the electrode is hinged to the mounting portion through a hinge shaft, and the axis of the hinge shaft is a second axis; one end of the biasing member abuts against the connecting member, and the other end abuts against the electrode, applying a biasing force to the electrode tending to remain in the mounting portion; the connecting member can be driven to rotate around the first axis, and the electrode deflects out of the mounting portion and rotates around the second axis when the connecting member rotates. This allows the electrode to extend into a guide hole machined on a workpiece when the connecting member is not rotating, and to deflect out of the mounting portion to machine a rotating inner cavity or inner hole when the connecting member rotates to generate centrifugal force, thereby solving the problem that the electric spark equipment in the prior art cannot machine a rotating inner cavity or inner hole whose inner cavity diameter is larger than the orifice.

The invention relates to the technical field of pulse state recognition, in particular to an electric spark discharge pulse state recognition and control system and method.The electric spark discharge pulse state recognition and control method comprises the following steps that gap voltage is obtained, and whether the gap voltage is rising edge voltage or not is judged; comparing the gap voltage which is judged to be the rising edge voltage with a preset threshold voltage; when the gap voltage is the same as any one of the preset threshold voltages, a trigger state identifier is set to be 1, and counting is started from a preset value A1; when any one of counting stopping conditions is met, counting is stopped, the state identifier is reset, and the counting value is returned to the preset value A1; calculating delay time between two time points of counting starting and counting stopping; judging the delay time and outputting a judgment result; and performing control according to the judgment result. According to the invention, based on the pulse voltage threshold and the time characteristic, the short-circuit arc pulse and the arc discharge pulse are rapidly and accurately identified.

The invention relates to a deicing method, system and device based on gas-liquid discharge mode conversion and intelligent regulation, and the method comprises the steps: monitoring and predicting an icing state, and adjusting the output of a multi-gear adjustable power supply according to a prediction result, so as to generate weak spark discharge; when the icing condition is met, the needed energy is calculated according to the monitoring data to adjust the output of the multi-gear adjustable power supply so as to generate dielectric barrier glow discharge, and the discharge parameter is dynamically adjusted to maximize the strong heat input effect; the forming time and position of a gas-liquid mixture cavity under the condition of dielectric barrier glow discharge are predicted in real time by introducing a thermodynamic principle and an ice layer melting model, and after the cavity is detected to be formed, the optimal opportunity and energy of strong arc discharge are determined according to cavity parameters; therefore, the output of the multi-gear adjustable power supply is adjusted to generate strong arc discharge, and the cavity of the gas-liquid mixture is induced to expand and break, so that the ice layer falls off. The invention provides a more efficient, environment-friendly and reliable deicing solution.

The utility model is suitable for the technical field of pulsed electric field ablation catheters, and provides a pulsed electric field ablation catheter which comprises a catheter body part and an expansion part, the catheter body part comprises a main body tube and a push-pull tube, the push-pull tube is movably arranged in the main body tube in a penetrating mode, and at least part of the push-pull tube extends out of the far end of the main body tube; the expansion part comprises an expansion pipe, and a plurality of branch pipes are formed between the near end and the far end of the expansion pipe; the branch tube is provided with at least one treatment electrode, a cooling gap communicated with the external environment is arranged between the branch tube and the treatment electrode, the main tube is provided with a first perfusion channel, the branch tube is provided with a second perfusion channel, the first perfusion channel is communicated with the second perfusion channel, and the second perfusion channel is communicated with the cooling gap. According to the pulsed electric field ablation catheter provided by the invention, a perfusion hole does not need to be formed in the surface of the treatment electrode, the spark discharge phenomenon on the treatment electrode can be effectively avoided, and the reliability is relatively high.

The invention discloses a method for rapidly detecting chemical components in a thin steel plate below 2mm by using a direct-reading spectrometer, belongs to the technical field of physical and chemical detection, and aims to solve the problem that a sample with the thickness of less than 2mm in the national standard GB / T 4336-2016 cannot be directly analyzed by using spark discharge atomic emission spectrometry. The method comprises the following operation steps: confirming conditions such as a sample preparation mode, a sample spectrum excitation limit thickness, influence of sample flatness and use of a special sample clamp, optimizing working conditions of an instrument, and establishing a method for measuring 13 elements such as C, Si, Mn, P, S, Cr, Ni, Cu, Al, Nb, V, Ti and N in a carbon steel and low alloy steel sheet with the thickness not less than 0.20 mm through spark discharge atomic emission spectrometry. And verifying the precision and accuracy of the determination result of each element, and comparing the results to show that the determination result of each element is consistent with the standard GB / T 4336-2016. The method does not need to decompose a sample, and has the characteristics of accurate and rapid determination and good stability.

The invention relates to the technical field of lasers, and discloses a corona-based creeping spark discharge strong pre-ionization pulse gas laser which comprises a main frame chamber, a pre-ionization device is fixedly mounted at the top of an inner cavity of the main frame chamber, a cathode electrode is arranged at the top of the inner cavity of the main frame chamber, and a connecting copper sheet is fixedly mounted on the lateral upper portion of the inner wall of the main frame chamber. A flow guide plate is fixedly installed on the connecting copper sheet, and an anode electrode is fixedly installed at the top end of the flow guide plate. A corona-based creeping spark discharge strong pre-ionization pulse gas laser is characterized in that a pre-ionization area can be formed on a pre-ionization device and structures on the pre-ionization device, electrons in the pre-ionization area move in an accelerated manner under the action of electric field force, and in the movement process, the electrons in the pre-ionization area are separated from the pre-ionization device. And the electrons and other gas particles are subjected to inelastic collision and ionization or excitation, so that high-concentration and uniform initial electrons are generated, a micro-discharge channel is formed, and continuous seed electrons are provided for a core discharge region of the micro-discharge channel.

The invention provides a spark discharge device and a spark discharge accurate control method, and relates to the technical field of spark discharge. The device comprises a pair of spark electrodes, a rotary switch, a capacitor and a power supply, wherein a gap exists between working ends of the spark electrodes; the spark electrode, the rotary switch and the capacitor are connected in series to form a discharging loop, and the capacitor and the power supply are connected in series to form a charging loop; the rotary switch comprises a rotatable rotor and a toothed bar connected with the rotor; a contact is arranged in the discharge loop, and when the contact is in contact with the toothed bar, the discharge loop is conducted. According to the invention, the discharge loop is rapidly switched on and switched off through the rotary switch, various parameters of spark discharge can be accurately and stably controlled, so that the spark discharge is not influenced by the environment, such as spark breakdown voltage, discharge frequency and the like, and the spark discharge can be prevented from being converted into corona, glow or arc discharge, for example, the spark discharge can be normally generated under low air pressure.

The invention belongs to the technical field of special maintenance in a high-radiation environment of a nuclear power plant, and particularly relates to a digital control system and method for high-radiation boron-containing underwater electrical discharge machining. Comprising a control module, the control module is respectively connected with a human-computer interaction interface, an input / output module, an analog-to-digital conversion module and field layer equipment, the input / output module is connected with a limit switch, and an external alarm and a control instruction are input into the input / output module. And the temperature signal, the gap voltage current and the conductivity are converted by the analog-to-digital conversion module and then are input to the control module. The method has the beneficial effects that in the electric spark discharge machining operation process under the high-radiation boron-containing water environment of a nuclear power plant and the like, centralized and effective control over all field layer equipment is achieved, and the problem that conventional discharge machining equipment cannot be used under the high-radiation boron-containing water environment is solved.

The present application is applicable to the technical field of pulsed electric field ablation catheters, and provides a pulsed electric field ablation catheter. The pulsed electric field ablation catheter comprises: a tube body part and an expansion part. The tube body part comprises a main body tube and a push-pull tube, and the push-pull tube movably penetrates through the main body tube and at least partially extends out from a distal end of the main body tube. The expansion part comprises an expansion tube, and a plurality of branch tubes are formed between a proximal end and a distal end of the expansion tube. At least one treatment electrode is provided on the branch tube, and a cooling gap in communication with the external environment is provided between the branch tube and the treatment electrode. A first perfusion channel is provided on the main body tube, and a second perfusion channel is provided on the branch tube. The first perfusion channel is in communication with the second perfusion channel, and the second perfusion channel is in communication with the cooling gap. The pulsed electric field ablation catheter provided by the present application does not require a perfusion hole to be formed on the surface of the treatment electrode, which can effectively avoid the phenomenon of spark discharge on the treatment electrode, offering high reliability.

The wire frame wire conveying mechanism comprises a machine tool base, a machining table is arranged on the front side of the upper end of the machine tool base, a wire conveying control table is arranged on the rear side of the upper end of the machine tool base, an adjusting sliding plate is arranged at the upper end of the wire conveying control table, and a wire conveying rolling shaft is arranged at the upper end of the adjusting sliding plate. A supporting frame is arranged between the machining table and the wire conveying control table, the lower end of the supporting frame is fixedly connected to the upper end of the machine tool base, the tension of a cutting wire is finely adjusted by a tensioning roller through threaded connection of an adjusting screw rod and a sliding frame, it is guaranteed that the tension of the cutting wire is uniform in the machining process, vibration is reduced, wire breaking is avoided, and the machining precision is improved; the motor mechanism is stably and electrically connected with the cutting line through the conduction sliding rod and the conduction rolling wheel, it is ensured that the conduction rolling wheel is tightly attached to the cutting line through the attaching spring, the stability of current conduction can be kept even when the cutting line moves, and the electric spark discharge effect in the machining process is ensured.

A rotating target high yield compact D-D neutron generator disclosed by the present invention comprises an ion source unit, a vacuum main body unit and a target unit, the ion source unit generates a deuterium ion beam, the deuterium ion beam is introduced into a vacuum chamber and passes through a leading-out accelerating electrode for acceleration, and the accelerated deuterium ion beam bombards the circumferential target surface of a molybdenum target to generate a deuterium ion beam. And deuterium-deuterium fusion reaction with deuterium nuclei injected into the molybdenum target in advance is carried out, fast neutrons are released, and the neutron yield is improved. The rotating driver of the target unit drives the molybdenum target of the cylindrical structure to rotate through the insulating rotating shaft, the molybdenum target rotates to distribute beam power to the circumferential target surface of the molybdenum target, a cooling medium is conveyed to one side of the inner side wall of the molybdenum target in combination with the cooling channel, the molybdenum target is cooled, and the service life of the target unit can be effectively prolonged. The leading-out accelerating electrode is located in the vacuum cavity, operation of the vacuum main body unit is not affected by external humidity and temperature environment conditions, high-voltage ignition discharge can be effectively restrained, and the safety performance of a high-voltage electric field is improved.

The invention relates to the technical field of electric precipitation, in particular to overload monitoring equipment and a monitoring method for electric precipitation equipment, and the method comprises the following steps: acquiring target production data; determining a target dust discharge amount according to the target production data; and determining the target current magnitude according to the target dust discharge amount. The method has the advantages that the neural network is used for conducting deep learning on online collected production data, a corresponding relation model between the dust amount and the power plant production data is established, the smoke dust emission amount is predicted based on the model, the average secondary current amount of the electric field is adjusted in real time on the basis, and the purposes of reducing consumption and reducing power consumption are achieved. According to the invention, the control aims of improving the reliability of the IGBT and prolonging the service life of the IGBT are fulfilled, the spark discharge phenomenon can be reduced or avoided as much as possible, equipment such as the IGBT and a trigger circuit board can be better protected, and unnecessary electric energy consumption can be effectively reduced at the same time.

The present disclosure relates to a battery pack that includes: a plurality of battery cells; and a pack case configured to accommodate the plurality of battery cells, and having a venting unit configured to discharge gases generated from the battery cell to the outside, and a blocking portion protruding inward from an inner surface thereof so as to prevent sparks discharged from the battery cell from moving toward the venting unit.

This invention provides a high-voltage suppression and voltage regulation protection circuit, relating to the field of circuit protection technology. The circuit includes a high-voltage discharge elimination circuit, a π-type composite EMI filter network circuit, and a voltage regulator circuit connected in sequence, with terminals at both the input and output ends. The high-voltage discharge elimination circuit consists of four DC spark discharge tubes and two varistors. The π-type composite EMI filter network circuit includes two high-voltage ceramic capacitors, two inductors, and one common-mode inductor. The voltage regulator circuit consists of an electrolytic capacitor and a Zener diode. Through the synergistic effect of the front-stage high-voltage elimination, intermediate-stage filtering, and rear-stage voltage regulation, the circuit achieves suppression and voltage regulation protection against high-voltage interference ranging from kilovolts to tens of kilovolts, ensuring continuous normal operation of the circuit system under harsh high-voltage environments.

The utility model discloses a numerical control electric spark discharge processing machine, include: electric spark processing machine tool is provided with the bottom plate in, the bottom plate bottom is provided with the second electric push rod, and the lifting end of second electric push rod is provided with the connecting plate, and the connecting plate surface is provided with the vertical board, and the vertical board side is provided with the first electric push rod, and the processing plate side is provided with the removal groove, and the removal groove is provided with the moving plate in, and the moving plate is provided with the lifting plate in, and the lifting plate surface is provided with the base, and the base side is provided with the clamping plate, beneficial effect is: first can through the first electric push rod to the clamping plate and push, thereby just can use two sets of clamping plate clamping effect to the workpiece positioning clamping, thereby the subsequent electric spark processing machine tool is convenient to the workpiece and processes, when processing ends, can start second electric push rod and make the connecting plate and go up, thereby just can make the processing plate and go up, thereby convenient subsequent to the workpiece after processing and take down.

The invention provides a preignition detection device. The processing circuit calculates a rotational variation amount of the engine and a spontaneous combustion start timing in order to detect the occurrence of pre-ignition in the engine. The engine is of a spark ignition type in which a gas mixture in a combustion chamber is ignited by spark discharge. The spontaneous combustion start timing is the timing at which the temperature of the mixed gas in the combustion chamber during the compression stroke reaches the ignition point of the mixed gas. When the rotational variation amount is equal to or greater than a predetermined threshold value and the spontaneous combustion start timing is earlier than the predetermined timing, it is determined that pre-ignition has occurred in the engine.

The device comprises a pulse power supply, the negative electrode and the positive electrode of the pulse power supply are connected with a metal-based diamond composite material and a tool electrode respectively, the tool electrode or the metal-based diamond composite material is provided with an ultrasonic vibrator, and the ultrasonic vibrator is connected with the pulse power supply. And the ultrasonic vibrator is provided with an ultrasonic generator. According to the method, the distribution density of bubbles on the surface of the diamond is improved through the cathode surface hydrogen evolution process in the electrolysis process, controllable conditions are created for the ultrasonic cavitation effect, a tool electrode material is sputtered to the surface layer of the diamond due to electric spark discharge, a catalyst is provided, and the conversion efficiency of diamond graphitization is improved by integrating the two conditions. The surface layer of the diamond has electrical conductivity after being graphitized, so that the diamond has discharge machinability without the operation of plating metal and the like, and the implementation mode is simple.

The invention belongs to the technical field of special maintenance in a high-radiation environment of a nuclear power plant, and particularly relates to a digital power supply system and method for high-radiation boron-containing underwater electrical discharge machining. The AC external power supply is connected with an external power supply; the AC external power supply is connected with a rectification module; a synchronous trigger signal is input into the rectification module; the rectification module is connected with a filtering module; the protection module and the monitoring module respectively output signals to the rectification module, the storage module and the filtering module. The device has the beneficial effects that controllable and stable discharge machining operation power supply output is provided in the electric spark discharge machining operation process in a high-radiation boron-containing water environment such as a nuclear power plant, and the problem that a conventional discharge machining power supply cannot be used in the high-radiation boron-containing water environment is solved.

The invention provides a spot welding machine workbench which comprises a workbench body, and a positioning frame is arranged on the workbench body. The fixed sliding plate assembly comprises a hanging plate, and the fixed sliding plate assembly is connected with the positioning frame through the hanging plate; the sliding block assembly is connected with the fixed sliding plate assembly, and the sliding block assembly and the fixed sliding plate assembly move relatively; the air cylinder is arranged on the fixed sliding plate assembly and used for pressurizing the machined part; the welding gun is arranged on the sliding block assembly, is provided with a button for controlling a power switch, and is used for independently controlling the welding electrification of the machined workpiece; the control pedal is connected with the air cylinder and used for controlling the air cylinder to pressurize. Pressurizing and a power switch of the electric welding machine are separately controlled, the air cylinder is used for pressurizing, the power switch is a power-on button on a welding gun, and the problems that a spot welding machine is poor in applicability, spark discharge ablation is caused, welding spots are not firm, the appearance is uneven and has burrs, thin weldments are prone to breakdown, the operation requirement is high, and the work efficiency is not high are solved.

The invention discloses a bearing and a vehicle with the same, and relates to the technical field of mechanical parts, the bearing comprises an inner ring, an outer ring, a plurality of balls, a first sealing piece and a conductive piece, the outer wall of the inner ring is provided with a first convex part, and the inner wall of the outer ring is provided with a second convex part; the plurality of balls are rotatably arranged between the inner ring and the outer ring; the first sealing piece is arranged between the first convex part and the second convex part to form a sealing cavity; and the conductive piece is arranged in the sealing cavity. According to the bearing disclosed by the embodiment of the invention, the sealing cavity is formed in the bearing, and the conductive piece is arranged in the sealing cavity, so that a conductive effect can be achieved, common-mode shaft voltage generated by the inner ring and the outer ring is conducted, electric spark discharge is not formed, and the electric corrosion of the bearing is prevented.

The invention provides an electric spark discharge machining machine control method and system based on industrial data processing, and relates to the technical field of industrial data processing.The method comprises the steps that in the movement process of an electric spark machining machine, working conditions are captured, and high-frequency real-time sensing data flow is output; receiving a high-frequency real-time sensing data stream through a redundant dual-channel RS485 bus, and synchronously calling a processing position time sequence slice; isomorphic processing scene matching is carried out to obtain a historical control parameter sequence; outputting a multi-modal real-time working condition feature tensor; carrying out discharge parameter increment prediction, and outputting an updated pulse parameter adjustment vector; sending the parameters to a PLC (Programmable Logic Controller) to drive a discharge module of the processing machine to execute smooth parameter adjustment transition; and iteratively executing closed-loop prediction parameter adjustment. The technical problems that in the prior art, an electric spark machining machine often depends on manual adjustment and experience to select discharge parameters, so that the precision and consistency of the machining process are difficult to guarantee, the debugging period is long, and the production efficiency is low are solved.

According to the spark plasma discharge circuit provided by the invention, the charging current provided by the direct-current high-voltage power supply is transmitted to the spark circuit formed by connecting a plurality of sparks in series and / or in parallel through the resistor, so that each spark in the spark circuit is independently discharged; the spark electrode materials are subjected to atomic-scale mixing in a small space, and multi-element particles are formed; the energy of single spark discharge is controlled through a capacitor connected in parallel with each spark in the spark circuit and a spark electrode distance, and the discharge frequency of the spark is controlled through a parallel / series resistor. According to the invention, independent discharge of multiple sparks can be realized, mixing of multiple materials is realized, and the energy and frequency of each discharge spark can be controlled, so that regulation and control of the yield of particles of each discharge spark as well as element mixing and composition regulation and control of the materials in the particles can be realized.

The utility model provides a radio frequency feed-in device for a PECVD (plasma enhanced chemical vapor deposition) reaction cavity and PECVD equipment. The radio frequency feed-in device for the PECVD reaction cavity penetrates through a vacuum cavity wall from an atmosphere side to enter a vacuum side, sequentially comprises a conductive core shaft, an insulating layer and a shielding layer which are coaxially arranged from inside to outside, and further comprises a corrugated pipe arranged on the outer side of the shielding layer, the first end of the corrugated pipe is fixed on the lower side of the top end of the shielding layer, and the second end is fixed on the wall of the vacuum cavity from the atmosphere side. According to the utility model, the structure dislocation of the radio frequency feed-in device and the vacuum damage of the PECVD reaction cavity caused by high-temperature thermal expansion can be avoided, and the sparking discharge caused by the pressure change of the outer cavity can be avoided.

One variation of a system includes a set of electrode modules configured to install a battery storage container storing a set of battery cells, each electrode module configured to generate spark discharge at a pair of gapped electrodes to locally combust flammable gas accumulating proximal the electrode module during a fault event at a battery cell. This variation of the system also includes a discharge control module electrically coupled to the set of electrode modules via a set of ports and configured to: detect an ignition event within the battery storage container responsive to spark discharge at an electrode module in the set of electrode modules; set a frequency for spark discharge at the set of electrode modules in response to detection of the ignition event; and via the set of ports, trigger each electrode module to generate spark discharge at the frequency.

Spark plug (10; 70; 90; 110), comprising: an insulator (11) having an axial hole (12) formed therein in the direction of an axis (O) of the spark plug (10; 70; 90; 110;); a center electrode (20) arranged in a front end side of the axial hole (12); a cylindrical metal housing (30) which holds the insulator (11); and a ground electrode (40; 71; 91) comprising a rod-shaped ground electrode base (41; 72; 92) formed of a Ni-based material and coupled to the metal case (30) at a base end portion (43) thereof, and a ground electrode tip (53) made of a noble metal-based material and attached to a distal end portion (42) of the ground electrode base (41; 72; 92), wherein the distal end portion (42) of the ground electrode base (41; 72; 92) includes: a first surface (44; 74; 93) opposite a front end surface (26) of the center electrode (20); and second and third surfaces (47, 50; 75, 77; 95, 96) connected to the first surface (44; 74; 93) and extending from the distal end portion (42) to the base end portion (43) of the ground electrode base (41; 72; 92), wherein the ground electrode tip (53) comprises: a first tip element (54; 79; 99) attached to the first surface (44; 74; 93) and having a first discharge surface (55; 80; 100) to allow spark discharge between the center electrode (20) and the first discharge surface (55; 80; 100); and a second tip element (56; 81; 101) attached to at least one of the second and third surfaces (47, 50; 75, 77; 95, 96) and having a second discharge surface (57; 82; 102) to allow spark discharge between the center electrode (20) and the second discharge surface (57; 82; 102), wherein the first tip element (54; 79; 99) and the second tip element (56; 81; 101) are spaced apart from each other, and wherein a volume of the second tip element (56; 81; 101) is greater than a volume of the first tip element (54; 79; 99).

A process for induced spark discharge / resistance brazing of ceramic particles to metals uses a special bimetallic sheet as an induced discharge layer. The sheet is fixed above a metal substrate with a certain gap. A flexible powder mass of a brazing material and an adhesive is evenly spread onto the sheet, and ceramic particles are placed on the surface of or embedded in the brazing material as needed. The sheet is connected to the positive pole of a pulse power supply, and the metal substrate is connected to the negative pole. After power is applied, relevant process parameters are adjusted to apply pressure to the ceramic particles, reducing the gap between the sheet and the metal substrate to a point where spark discharge occurs, achieving a connection between the sheet and the metal substrate. Continuous pulse discharge is then used to melt the brazing material using the resistance heat generated at the junction of the sheet and the metal substrate, thus achieving a connection between the ceramic particles and the metal substrate. This invention effectively solves the problem of particle shedding caused by particles protruding from the coating in the prior art.

To prevent the occurrence of backfire and preignition of an internal combustion engine due to unintended spark discharge of an ignition plug without generating positive voltage when charging an ignition coil.SOLUTION: The ignition device includes the ignition coil that generates a high voltage in the secondary coil 53 by interrupting the current of the primary coil 52, the igniter that conducts and interrupts the current flowing through the primary coil 52, the spark plug that is connected to the secondary coil 53 and generates the spark discharge in the combustion chamber, and the control unit 2 that sends the ignition signal of the main discharge for igniting the air-fuel mixture in the combustion chamber and the ignition signal of the sub-discharge to the igniter 54 when the residual energy amount in the ignition system from the ignition coil to the spark plug after the main discharge is larger than the predetermined threshold value.SELECTED DRAWING: Figure 3

The invention provides a method for analyzing spark discharge generated by interaction of electromagnetic waves and gas, and relates to the technical field of plasmas. The method comprises the following steps: firstly, based on PIC / MCC model simulation, according to ionization, excitation and collision data of charged particles and gas molecules, analyzing an ionization process to obtain an ionization field intensity threshold value, analyzing different gases to obtain a breakdown voltage estimated value, and analyzing gas breakdown according to the environment to generate electric spark discharge; and electromagnetic situation prediction is added to obtain a prediction result. According to the method, gas breakdown caused by field intensity is analyzed, results of coal dust and the like in the environment are corrected, and the future electromagnetic field environment can be predicted, so that the method can effectively analyze more accurate results of spark discharge generated by interaction of electromagnetic waves and medium discontinuous interfaces.

This system provides highly accurate monitoring of spark discharges based on the time-dependent changes in spark size. [Solution] The spark discharge monitoring system comprises a receiving unit, a control unit, and a display unit. The receiving unit receives spark information. The control unit acquires the time change of the spark number based on the spark information, corrects the spark number based on operating data including at least the field current, and displays the time change of the corrected spark number on the display unit.

The invention discloses a tool electrode and a machining method, and relates to the technical field of electric spark machining, a conductive bonding layer is bonded to the tool electrode, so that the conductive bonding layer which is bonded to the tool electrode and is located on the current working face and the tool electrode are subjected to loss corrosion removal at the same time when a workpiece material is subjected to corrosion removal through spark discharge; under the flowing action of the insulating liquid medium, the etched conductive bonding layer is mixed and bonded with metal chips of the tool electrode and the workpiece which are etched together to form carbon slurry, the carbon slurry is attached to the working surface of the tool electrode, and a layer of protective film is formed on the working surface of the tool electrode; therefore, in the workpiece machining process, the protective film attached to the working face is continuously damaged, a new protective film is generated through continuous spark discharge, the working face of the tool electrode is always covered with the protective film, the actual loss of the tool electrode in the workpiece machining process is greatly reduced, and the machining efficiency of the workpiece is improved. And the service life of the tool electrode can be prolonged.