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MICRON ACCURACY

Precision Wire EDM & Tooling Cells

Sub-Micron Electrical Discharge Machining for Hardened Tool Steels & Micro-Slots.

For sharp internal corners, deep narrow slots, and hardened tool steels up to 65 HRC that cannot be machined with conventional rotary cutters, JYH Prototype relies on advanced Sodick and AgieCharmilles Wire EDM and CNC Sinker EDM cells.

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±0.002mm EDM Accuracy
Ra 0.1µm Mirror EDM
Hardened Steels up to 65 HRC
Corporate Competencies & Governance

Precision Engineering Built on Transparency

Shenzhen Jinyihe Technology Co., Ltd. operates with total manufacturing clarity, certified quality systems, and complete legal compliance for global Tier-1 OEMs.

Sub-Micron Wire EDM

0.1mm - 0.25mm brass and molybdenum wires producing corner radiuses as tight as R0.05mm.

CNC Sinker EDM with C-Axis

Multi-cavity CNC sinker EDM utilizing high-density copper and graphite electrodes for textured mold finishes.

Zero Mechanical Stress

Non-contact electrical discharge cutting prevents workpiece deflection on delicate thin-wall fins.

Hardened Steel Machining

Directly cuts hardened D2, SKD11, CPM 10V, carbide, and aerospace superalloys without annealing.

Detailed Corporate Engineering Deep Dives

Inside Shenzhen Jinyihe Precision Manufacturing

Explore how our engineering teams, certified cleanroom facilities, advanced multi-axis CNC machines, and strict quality metrology labs guarantee consistent results.

ARTICLE 01 Wire Electrical Discharge Machining: When Cutting End Mills Can’t Reach
Technical Deep Dive

Wire Electrical Discharge Machining: When Cutting End Mills Can’t Reach

ARTICLE 02 CNC Sinker EDM: Crafting Multi-Cavity Injection Mold Cores and Cavities
Technical Deep Dive

CNC Sinker EDM: Crafting Multi-Cavity Injection Mold Cores and Cavities

ARTICLE 03 Zero Heat Affected Zone (HAZ) Control via Low-Energy Finishing Sparks
Technical Deep Dive

Zero Heat Affected Zone (HAZ) Control via Low-Energy Finishing Sparks

ARTICLE 04 Micro-Hole High-Speed Drilling for Wire Threading and Cooling Orifices
Technical Deep Dive

Micro-Hole High-Speed Drilling for Wire Threading and Cooling Orifices

Ready to Partner with a Certified Precision Manufacturer?

Whether you need a dedicated plant audit, NDA-protected prototyping, or volume serial manufacturing, our Shenzhen engineering teams are standing by.

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Factory QA & Customer Governance

Frequently Asked Questions

Direct answers to client questions regarding our legal status, factory audits, non-disclosure agreements, and global shipping.

Wire EDM is optimal for hardened tool steels (50-65 HRC), sharp internal 90° corners with no fillet radius, narrow slots under 1mm, and parts prone to tool deflection.
No. EDM requires electrically conductive materials such as aluminum, steel, titanium, brass, copper, and conductive carbon fiber.
Our Sodick finishing passes achieve surface finishes as fine as Ra 0.2µm to 0.1µm, suitable for optical injection mold cores.
Our multi-pass trim protocol (1 rough pass + 3 to 4 finish passes) systematically removes the recast layer to prevent micro-fracturing.
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