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• Posted By: xiu umin
• Posted On: Aug 06, 2019
• Views: 1
• Likes: 1
• Category: Electronics
• Description: Through a large number of experimental studies, the physical nature of the Daily Necessities Mould(FURNITUREMOULD) https://www.furnituremould.com/product/daily-necessities-mould/ spark machining is as follows: (1) Breakdown of dielectric and formation of discharge channels Since the surface of the tool electrode and the workpiece is always microscopically uneven, the power plant generated at the tip of the closest pole is the strongest, and the impurities in the medium (such as metal particles, carbon particles, etc.) are rapidly aggregated under the action of the electric field force. To a place with a strong electric field. When the electric field strength increases above 10^6V/cm2, electrons escape from the surface of the cathode, move to the anode at high speed and strike the molecules and neutral atoms in the medium, resulting in "avalanche" collision ionization, resulting in dielectric breakdown. Discharge channel. (2) Energy conversion, distribution and transmission After the inter-electrode medium is broken down, the pulse power supply instantaneously discharges energy through the discharge channel and converts it into heat energy, kinetic energy, magnetic energy, light energy, energy generation and electromagnetic wave radiation energy. Most of the energy is converted into heat, which is transmitted to the electrode and the workpiece to form an instantaneous high-temperature heat source (up to 10000 °C) so that the local metal at the discharge point is melted and vaporized. (3) Ejection of electrode material The instantaneously melted and vaporized metal produces a powerful thermal explosive force, accompanied by electrodynamic forces and fluid forces, causing the erosion of the metal material to be thrown away from the electrode and the surface of the workpiece, leaving a pit on the surface. (4) Deionization of interelectrode medium After a pulse discharge, the interelectrode medium should be immediately deionized, the dielectric strength should be restored, and arcing or secondary discharge should be avoided at the same place. Therefore, there should be a sufficient pulse interval between the two pulse discharges, and the electrolytic corrosion products should also be Eliminate in time. Click Household Product Mould https://www.furnituremould.com/product/daily-necessities-mould/ to learn about more information.