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Electrical Discharge Machining (EDM) Services

We offer a complete range of Electrical Discharge Machining (EDM) services, including Wire EDM and Sinker EDM, specializing in the machining of metal parts with high precision and complex structures. Wire EDM is suitable for complex contours and high-precision cutting, while Sinker EDM is suitable for mold cavities and internal structure machining, and the combination of the two processes can meet the machining needs of different types of parts. Widely used in mold manufacturing, automotive parts and precision machining field. Welcome to send drawings, we will provide you with processing programs and quotations within 12 hours.

Wire EDM｜High Precision Complex Contour Cutting

Wire EDM｜High Precision Complex Contour Cutting

**Wire EDM (Electrical Discharge Machining) uses a fine metal wire as an electrode to perform high-precision cutting on conductive materials. It is suitable for the manufacture of complex contours, slits, and precision structural components. ****This process employs a non-contact electrical discharge method, generating no cutting forces during machining, which effectively prevents workpiece deformation. It is particularly suitable for the machining of high-precision and thin-walled parts. ****It is widely used in mold manufacturing, precision mechanical components, and complex structural machining, and can meet the machining requirements of various types of parts.Machining accuracy can reach ±0.005 mm, meeting the requirements for high-precision part manufacturing.**

Machining accuracy up to ±0.005mm

Supports cutting of complex contours and precision structures

High hardness materials such as hardened steel can be processed.

Support sampling and small batch production

Sinker EDM｜Precision Processing of Complex Cavities

**Sinker EDM (Electro-Discharge Machining) uses custom electrodes to erode the workpiece through electrical discharge, enabling high-precision machining of complex cavities, deep holes, and fine structures. It is a critical process in mold manufacturing. ****This process is not limited by material hardness and is particularly suitable for high-hardness materials such as hardened steel. It can also machine complex internal structures and sharp-angled details that cannot be achieved with traditional cutting tools.****It is widely used in the fields of injection molds, die-casting molds, and high-precision component machining to meet the manufacturing demands of parts with complex structures. It is suitable for high-precision mold cavity machining, ensuring consistent structural details and dimensional accuracy.**

Suitable for complex cavities and internal structures

Deep holes, sharp corners and fine details are possible

Not limited by material hardness (for hardened steel)

Suitable for areas that cannot be machined with conventional tools

Sinker EDM｜Precision Processing of Complex Cavities

Comparison of EDM Processing Methods (WEDM vs EDM)

Comparison of ProjectsWire EDMSinker EDM
Working PrincipleCuts the workpiece by moving a metal wire through an electric dischargeMaterial is eroded by electrical discharge using a shaped electrode
Electrode TypesFine metal wire (continuous movement)Solid electrode (copper/graphite)
Processing methodContour cuttingCavity forming
Machining AreasExternal shape, contour, through-hole structuresInternal structures, cavities, deep holes
Structural CapabilitiesComplex shapes, slots, microstructuresComplex cavities, sharp angles, fine details
Tolerance RangeExtremely high (±0.005 mm)High (±0.01 mm)
Surface qualityUniform cut surfaces, minimal post-processingFine surface finish, capable of achieving a mirror-like effect
Material compatibilityAll conductive materialsAll conductive materials (including quenched steel)
ContactNon-contact processingNon-contact machining
Processing limitationsMust be through-hole (requires a pilot hole)Can machine closed structures
Typical ApplicationsPrecision parts, stamping dies, contour partsInjection molds, die-casting molds, cavity parts
Wire EDM Application Areas

Wire EDM Application Areas

Suitable for high-precision contour cutting and through-structure machining, it realizes stable machining of complex shapes and fine structures.

Precision parts profile machining

Stamping dies and profile parts

Thin-walled structures and slit machining

High Precision Sheet Cutting

Sinker EDM Application Areas

Sinker EDM Application Areas

Suitable for machining complex internal structures and cavities, capable of high-precision machining of deep holes, sharp corners and fine details.

Injection Mold Cavity Processing

Die casting molds and complex structural parts

Deep hole and small structure machining

Sharp corners and fine parts machining

EDM processing capacity and technical parameters

ProjectParameters
Machining AccuracyWire cutting accuracy: ±0.005 mm
EDM shaping accuracy: ±0.01 mm
Surface roughness: Ra 0.8 – 3.2 μm
Minimum feature size: ≥0.10 mm
Machining CapacityMaximum machining dimensions: ≤500 mm (subject to evaluation)
Maximum machining thickness: ≤300 mm
Minimum hole diameter: ≥0.20 mm
Minimum slit width: ≥0.10 mm
Material RangeDie steel: H13, SKD11, DC53, etc.
Stainless steel: 304, 316, etc.
Alloy steel: 40Cr, 42CrMo, etc.
Aluminum alloys: 6061, 7075, etc.
Copper and Conductive Materials: Pure copper, brass, etc.

Suitable for all conductive materials, including high-hardness quenched materials. Specific machining capabilities can be evaluated based on the part’s structure.

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Jinan Xinling will provide you with professional manufacturing advice and competitive quotes.

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