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Wire-EDM cutting is also one of the essential molds making process.
The principal of Wire cutting is the same as EDM sparking. We can take the wire as an electrode for EDM sparking. With-high electricity releasing to melting the steel. Wire cutting is often used for ejection holes cutting, guide pin holes cutting, regular external profile cutting of a tooling insert and etc.
There are 3 types of Wire-EDM cuttings:
1. Low-speed wire cutting. It’s mostly for rough cutting, for example, raw material preparation. It’s the most cost-effective one, but the accuracy is the lowest.
2. Low-speed wire cutting is the most expensive one and with high accuracy. The wire is cannot be re-used, but only one-time usage. It’s often for cutting the ejection holes of a production injection mold, profile of sheet metal dies, or other high accuracy profiles.
3. Medium-speed cutting is the one between these 2 processes, no matter at cost, machining speed, accuracy. The wire of this process can be re-used.
For rapid tooling making, we often us medium-speed wire cutting for ejection holes, guide pin holes. I for saving the cost. Sometimes, it’s also used for rapid prototype making, for example, the sheet metal parts, or regular metal parts.
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