Precision Custom Wire-Cut EDM Machining Services
Micro Thin Slit Wire EDM for Complex Hardened Mold Profiles
ISO 14001:2015 ISO 9001:2015 IATF 16949:2016
Custom Wire-Cut EDM Machining Product Overview
Wire EDM (Wire-Cut Electrical Discharge Machining) is a non-contact thermal erosion process that uses a continuously traveling thin electrode wire to cut complex shapes in electrically conductive materials. It produces precise contours, sharp corners, tapers, and micro-details without mechanical force, making it ideal for pre-hardened steels, carbides, and exotic alloys.
Our Wire EDM includes submerged 4‑axis/5‑axis cutting, multi‑pass skim finishing, and micro‑wire capabilities, delivering burr‑free, stress‑free components with micron‑level accuracy. We offer fully integrated solutions from design to final inspection, certified to ISO 9001, ISO 14001, and IATF 16949.
We had a critical mold insert made of hardened D2 steel that needed micro-adjustments after heat treatment. Conventional machining was out of the question. SinoCMI’s Wire EDM service not only saved the part but achieved tolerances under ±0.005mm and a flawless surface finish. You turned a potential disaster into a success. Exceptional precision when it mattered most.
Material & Processing Technology
We support all conductive materials and use advanced Wire EDM processes for stability, precision, and surface quality.
Supported Materials
- Hardened Tool Steels: D2, H13, A2, P20, S136 (50+ HRC)
- Stainless Steels: 304, 316, 17‑4PH
- Exotic Alloys: Titanium, Inconel, Hastelloy, Monel
- Hard Materials: Tungsten Carbide, Copper Alloys
- Standard Metals: Aluminum, Brass, Copper
Core Processing Technology
- 4‑axis & 5‑axis CNC Wire EDM with taper cutting
- Submerged machining for stability, precision, and fine finishes
- Multi‑pass roughing + skimming for tight tolerances
- Micro‑wire down to Ø0.02mm for tiny features
- Deionized water dielectric for cooling & flushing
- Non‑contact cutting (zero stress, zero distortion)
- Automated wire threading & unattended production
Dimension & Tolerance Standard
We maintain ultra‑high precision standards for Wire EDM parts:
- Standard Tolerance: ±0.005 mm
- High‑precision capability: ±0.001 mm
- Surface Finish: Ra 0.1–0.4μm
- Minimum wire diameter: Ø0.02 mm
- Minimum internal corner radius: R0.02 mm
- Maximum cutting thickness: 200 mm+
- Work envelope: 500 × 300 × 200 mm
- Zero distortion for thin‑wall & delicate components
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Surface & Heat Treatment
We provide integrated surface finishing and heat treatment to enhance performance, durability, and appearance.
Available Surface & Heat Treatment Options:
- Heat Treatment: Pre/post hardening, tempering, stress relief
- As‑Cut & Deburred (standard)
- Multi‑pass skim finishing
- Polishing & Mirror Finishing
- Electropolishing (medical/aerospace)
- Passivation (stainless steel)
- Plating: Nickel, Chrome, Zinc, Gold
- Custom cosmetic & functional coatings
Custom Wire-Cut EDM Machining Application Industry
Our Wire EDM services serve high‑precision industries worldwide:
- Mold & Die: Stamping dies, extrusion dies, blanking punches, mold inserts
- Medical: Surgical instruments, implant components, micro‑parts, nozzles
- Aerospace: Turbine parts, cooling holes, superalloy components
- Automotive: Precision gears, transmission parts, mold components
- Defense & Marine: High‑strength complex components
- Electronics & Semiconductor: Connectors, micro‑structures, pins
- General Engineering: Custom punches, precision prototypes, repair parts
Custom Wire-Cut EDM Machining Advantage
- Cuts any conductive material regardless of hardness (60+ HRC)
- Produces sharp corners, fine slots, and intricate 2D/3D contours
- Non‑contact process: No stress, no burrs, no distortion
- 5‑axis taper cutting for complex undercut profiles
- Micro‑wire capability for tiny, delicate features
- Multi‑pass skim cuts for mirror‑like surface finishes
- Fully submerged cutting for maximum stability
- Full workflow integration: CNC → Heat Treat → Wire EDM → Grind
- Free DFM analysis for cost & precision optimization
- ISO/IATF certified quality system
Quality Inspection Standard
We implement full‑process strict quality control for every Wire EDM project:
- Pre‑production DFM review & cutting path optimization
- In‑process monitoring of tolerance & surface finish
- Final inspection using CMM, optical comparators, profilometers
- Full documentation: FAI reports, material certs, inspection reports
- Regular machine calibration & wire tension control
- Strict dimensional & geometric validation
Custom Wire-Cut EDM Machining Service
We provide full‑chain custom Wire EDM solutions tailored to your project needs:
- Custom Wire EDM cutting for prototypes and production parts
- Free DFM analysis & design for manufacturability
- Material and surface/heat treatment customization
- Support CAD formats: STEP, IGES, SLDPRT, X_T, DWG, DXF, STL, PDF
- Flexible order quantities from 1 piece to mass production
- Fast quotation & short lead times
- Full technical support and after-sales service
FAQs About Wire EDM
What is Wire EDM, and how does it work?
expand_less expand_moreA: Wire Electrical Discharge Machining (EDM) is a precision machining process that uses a continuously moving thin wire (electrode) and controlled electrical sparks to cut complex shapes into electrically conductive materials. The sparks generate intense heat that melts and vaporizes microscopic particles of the workpiece, which are then flushed away by a dielectric fluid (deionized water). It is a non-contact process, meaning there is no mechanical force exerted on the part.
What about the surface finish?
expand_less expand_moreA: Surface finish is controlled by the number of "skim cuts." A standard rough cut may produce a finish of ~Ra 2.5 µm. Through multiple finishing passes, we can achieve surface finishes down to Ra 0.1-0.4 µm (4-16 µin) or better, suitable for many mold and critical component applications.
What level of precision and tolerance can you hold?
expand_less expand_moreA: Our standard high-precision wire EDMs can consistently hold tolerances of ±0.005 mm (±0.0002"). For critical features and with optimal process control, we can achieve tolerances as tight as ±0.001 mm (±0.00004"). Specific capabilities depend on part size, geometry, and material.
How thick can you cut?
expand_less expand_moreA: We can efficiently cut materials ranging from thin shims (0.1mm) to very thick blocks. Our standard machines are capable of cutting workpieces over 300 mm (12 inches) thick, with specific machines handling even greater heights. Performance in thick cuts is optimized by our submerged machining technology for stability.
What is the smallest wire you use, and what are the benefits?
expand_less expand_moreA: We utilize fine wires down to Ø0.02 mm (0.0008") for micro-EDM applications. Benefits include:
· Reduced Kerf: Creates narrower cuts, minimizing material waste and allowing tighter radii.
· Micro-Features: Enables the machining of extremely small holes, slots, and intricate details.
· Lower Cutting Force: Ideal for delicate and fragile components.
What are the key advantages of Wire EDM over traditional machining?
expand_less expand_moreA: Key advantages include:
· Machines Hardened Materials: Can cut pre-hardened materials, eliminating distortion from post-heat treatment.
· High Precision & Complexity: Achieves extremely tight tolerances and intricate geometries with sharp corners.
· No Mechanical Stress: As a non-contact process, it produces parts free from burrs and mechanical stress.
· Excellent Surface Finish: Capable of producing very fine surface finishes without additional polishing.
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