Basic knowledge to be mastered:
1, with a high school education or above and a certain computer operation foundation.
2.CAD drawing and programming.
3. The structure and processing principle of 3.WEDM.
4. Basic operations of 4.WEDM: such as winding, tightening, cutting fluid ratio, electrical parameter selection, etc. Experience needs to be accumulated in practice.
WEDM belongs to the field of electrical machining. Lazarus of the former Soviet Union found that the instantaneous high temperature of electric spark can melt, oxidize and corrode local metals when studying the phenomenon and causes of electric spark damage to switch contacts, thus creating and inventing the electric spark machining method. WEDM was also invented by the former Soviet Union in 1960, and China was the first country to be used in industrial production.
Physical principle
Free positive ions and electrons accumulate in the electric field and soon form ionized conductive channels. At this stage, an electric current is formed between the two plates. It leads to numerous collisions between particles, forming plasma, which quickly rises to the high temperature of 8000 to 12000 degrees, instantly melts some substances on the surfaces of the two conductors, and at the same time, bubbles are formed due to the vaporization of the electrode and dielectric liquid, and its pressure rises regularly until it is very high.