Advanced Wire EDM & Precision Grinding: Ultra-Tight Tolerance Machining for Hardened Complex Components

Custom Wire EDM & Precision Grinding CNC Parts is our flagship ultra-precision manufacturing service focusing on ultra-tight tolerance conductive metal components for global high-end industrial buyers worldwide. Equipped with imported Slow-Feed Wire EDM machines, surface grinders, cylindrical grinders, jig grinders and CNC profile grinding equipment, we integrate Wire Electrical Discharge Machining and precision abrasive grinding into one-stop customized processing, specializing in hardened tool steel, carbide, titanium, stainless steel and exotic alloy precision spare parts with ultra-low deformation, superior edge sharpness and ultra-fine surface finish. Certified with ISO9001:2015 & RoHS compliance, our factory supports rapid prototype trial, small-batch customization and large-volume mass production for mold, medical, aerospace, automotive and precision instrumentation industries.

Different from conventional CNC milling & turning, Wire EDM realizes non-contact spark erosion cutting without mechanical cutting force, perfectly processing near-zero internal corner radius, ultra-narrow slots and complex closed contour features impossible for solid cutting tools; subsequent precision grinding further calibrates dimensional accuracy and optimizes surface roughness down to mirror grade. We deliver full DFM analysis, raw material inspection, combined WEDM+grinding composite processing, customized surface treatment and full dimensional QC inspection to fulfill full-chain OEM/ODM customization demands per customers’ CAD/STEP/IGS/DWG drawings or physical samples.

Core Processing Capacity Markers

· Slow Wire EDM Cutting: Wire diameter 0.10~0.30mm, tolerance ±0.002~±0.005mm, max cutting thickness 350mm, internal corner R≤0.015mm

· Surface Precision Grinding: Flatness tolerance ≤0.002mm, surface roughness Ra0.02~Ra0.8μm, max workpiece size 800×450mm

· Cylindrical/ID Grinding: Outer/inner diameter tolerance ±0.001mm, concentricity ≤0.002mm, processing OD range 1~200mm

· Jig Precision Grinding: Ultra-precision hole & contour grinding, positioning accuracy ±0.001mm for ultra-precision mold core components

Core Advantages of Our Custom Wire EDM & Grinding Machining

• Ultra-Tight Dimensional Precision: Standard combined processing tolerance ±0.005mm; ultra-precision customized parts reach ±0.001mm, fully satisfying strict precision standards of aerospace, medical implant and high-end precision mold industries. Wire EDM non-contact cutting avoids workpiece extrusion deformation, precision grinding eliminates leftover machining allowance error to realize micron-level size control.

• Superior Machinability for High-Hardness Materials: Process fully quenched tool steel (HRC58~65), tungsten carbide, titanium alloy, high-temperature nickel alloy which conventional cutters cannot machine; no pre-heat-treatment rough machining required, directly finish cut & grind post-hardening to save production cycle and reduce material waste.

• Unmatched Complex Contour Machining: Wire EDM easily fabricates ultra-narrow kerf (≥0.018mm), sharp inner corners, irregular closed cavities and thin-wall fragile structures; subsequent jig & profile grinding optimizes edge burr-free precision, solving the bottleneck of complex precision parts manufacturing for precision stamping mold and electronic terminal dies.

• Excellent Surface Quality Control: Wire EDM base finish Ra0.2~Ra0.8μm; after fine precision grinding, surface roughness down to Ra0.02μm mirror effect, no tool scratch, available for sealing, fitting and optical matching surfaces without secondary polishing.

• Full One-Stop Composite Processing: Combine Wire EDM rough cutting + multi-process precision grinding in-house, avoid outsourced cross-process transfer error; free DFM manufacturability review, raw material MTR certification, full-process intermediate inspection and final full-size testing to cut customers’ procurement management cost.

• Zero MOQ & Flexible Lead Time: Accept 1-piece prototype custom trial order as well as bulk mass production over 50,000pcs; urgent prototype finished within 2~3 working days, small batch 4~7 days, mass order arranged delivery per confirmed schedule.

Wire EDM & Precision Grinding Technical Specifications

Standard Wire EDM + Precision Grinding Production Process

Our standardized integrated WEDM+Grinding production flow strictly controls every manufacturing link to prevent thermal deformation, dimensional drift and surface defect for high-hardness precision parts. Detailed 8-step process breakdown below:

1. Drawing Review & Free DFM Analysis: Professional precision machining engineers verify drawing tolerance, corner structure and material machining feasibility, provide free DFM optimization advice to avoid EDM wire breakage, grinding chatter and dimensional out-of-tolerance risks.

2. Raw Material Preparation & Start Hole Drilling: Select certified material with official MTR, cut into standard blanks; pre-drill EDM start threading holes for closed internal cutting contours via EDM drill or CNC drilling.

3. CAM Programming & Simulation: Programmer imports 3D model to generate WEDM cutting offset path and grinding allowance data; run digital simulation to eliminate wire collision and over-cut risk in advance, optimize parameters matched with workpiece hardness.

4. Multi-pass Wire EDM Machining: Adopt imported brass wire (0.1~0.3mm), deionized dielectric fluid cooling, complete rough cutting + multiple trim finish passes to lock primary contour dimension and reduce post-grinding allowance.

5. Initial Deburr & Edge Trimming: Remove tiny spark burrs of EDM-cut parts by precision honing to avoid abrasive wheel chipping during subsequent grinding processing.

6. Custom Precision Grinding Processing: Distribute to surface/cylindrical/jig grinders per drawing requirement to remove residual allowance, calibrate flatness, roundness and dimensional tolerance to final design specification and optimize surface finish.

7. Strict Multi-Dimensional Quality Inspection: Use CMM, optical comparator, roughness tester and roundness measuring instrument for full inspection; issue batch official inspection certificate as customer’s customs clearance document.

8. Anti-rust Protective Packaging & Global Shipment: Parts coated with anti-rust oil, packed by anti-corrosion PE bag + shockproof foam + export carton; support DHL/FedEx/Air/Sea global delivery with complete certification documents.

Wide Application Industries of WEDM & Ground Precision CNC Parts

Our high-precision EDM+ground metal components are long-term supplied to global high-end manufacturing clients across six core industries with strict precision requirement:

• Precision Mold Manufacturing: Cold stamping die inserts, plastic mold core, precision ejector pins, terminal mold punches (hardened alloy, sharp inner corner required)

• Medical Equipment & Implant Parts: Titanium surgical fixture components, medical device precision positioning pins, implant grade stainless steel structural fittings (biocompatible material optional)

• New Energy & Automotive: EV battery conductive terminals, auto sensor precision molds, fuel system high-hardness valve components

• Aerospace & Aviation: Aircraft engine small alloy inserts, aerospace fixture precision pins, high-temperature resistant nickel alloy structural spare parts

• Electronics & 5G Communication: Connector precision stamping dies, semiconductor fixture core parts, miniature terminal mold components

• Optical Precision Instrument: Optical equipment positioning sleeves, ultra-precision instrument locating shafts, lab testing equipment alloy structural parts

FAQ

1. Can you produce fully based on my custom drawings or physical samples?

Absolutely yes. We support full OEM customization against your CAD/STEP/DWG design drawings, physical samples or hand sketch; our engineering team provides free DFM analysis and technical optimization suggestions before formal production.

2. What is your minimum achievable machining tolerance for combined WEDM+Grinding?

Our regular finished tolerance is ±0.005mm; for ultra-precision aerospace & medical parts after precision grinding, we can reach tight tolerance up to ±0.001mm to meet ultra-high precision specification.

3. Can you provide complete material & quality certification files?

Yes. Every finished order can be attached with raw material MTR report, full dimensional inspection COA, RoHS compliance certificate and surface finish test report for customers’ import customs clearance and incoming quality check.

4. How long is your normal production lead time?

Single prototype:2~3 working days; small batch below 500pcs:4~7 working days; mass bulk production:7~18 working days; rush order available with expedited scheduling upon request.

5. Is there any minimum order quantity limitation?

No MOQ restriction at all, we accept 1 piece prototype trial as well as large-volume mass orders to match customers’ prototype development and bulk procurement plans.

Get Free Custom Wire EDM & Grinding CNC Parts Quote

Send your design drawings, material grade, tolerance requirement and order quantity now! Our professional engineering & sales team will prepare free detailed quotation plus complimentary DFM analysis report within 24 working hours. Factory-direct competitive pricing with strict on-time global delivery to reduce your component procurement cost.