Not long ago “Made-in-China” stamping meant low-cost washers and mystery-grade brackets.
Walk into a Suzhou or Shenzhen tool-room today and you will find 1 200-spm servo presses, sub-micron carbide dies and vision systems that measure burrs in real time.
Below is a concise scorecard of where China excels, where it still trails, and why global OEMs now route their most demanding drawings to the Yangtze River Delta instead of the Rhine.
- What “precision blanking” means in 2025
- Fine-blanking: three-force shear that delivers Ra ≤ 1 µm edges and ±0.01 mm true position—no post-machining.
- High-speed progressive stamping: 0.05-3 mm strip at 600-1 000 spm, coining, embossing, in-die tapping, even in-die welding in one shot.
- Micro-stamping: features < 30 µm for 0.3 mm-pitch connector pins, shield fingers, battery vents.
- Metrics China already owns
| Benchmark | 2025 China level | Source / remark |
|---|---|---|
| Tooling cost | 40-50 % vs EU/JP quote | Local carbide + wire-EDM cluster |
| Lead time | 7 d prototype, 21 d Hardened die | Vertical chain: CAD → heat-treat → PVD |
| Press speed | 80 t servo, 1 200 spm, 0.01 mm repeatability | CGA series (Ningbo Jingda) |
| In-die functions | M2-M8 tapping @ 500 rpm; vision 100 % hole-check | Hengli JC line |
| Material utilisation | 78 % on 0.2 mm Cu-ETP (auto nesting) | AutoForm普及 |
| Micro features | 25 µm half-etch, burr < 10 µm | Bafudu, Tempress progressive dies |
- Technology bricks that closed the gap
- Servo-hydraulic presses – programmable slide motion doubles punch life.
- Sub-micron carbide grades – domestic PM-CG rivals ASSAB 15F at 60 % price.
- Inline straightener + de-oil + vision – sees 1 µm edge defect and kicks part before next stroke.
- 532 nm green-light copper welding – 120 mm/s on 2 mm Cu, conductivity drop < 2 % IACS (critical for EV busbars).
- White space still visible
| Gap | Why it matters | Who still owns it |
|---|---|---|
| Cu-Cr-Zr high-strength strip | 600 MPa / 80 % IACS for 5G relay springs | Japan Mitsubishi, Wieland |
| Sub-10 µm micro-stamping | 0.3 mm pitch BGA connector | Swiss microTools, US Minicut |
| 10 000 h creep data for Al | 800 V pack lifetime validation | EU/US labs |
| Patent thickets | V-ring angles, in-die sensor fusion | Schmid, Feintool |
- Real parts shipping today (China die + China press)
- EV motor stator stack, 0.35 mm NGO silicon steel, 12-station progressive, 0.005 mm burr, auto rivet within die.
- 5G RF shield, 0.15 mm Cu, 30 µm half-etch glue pocket, 600 spm, 40 M pcs / yr.
- Medical lancet, 0.2 mm 316 L, coined edge radius 12 µm, clean-room washed & vision packed.
- Bottom line for buyers
- Need 1 000 000 precision blanks next month? China can tool it in three weeks and run it at 1 000 spm tomorrow.
- Need 5 µm true-position holes in 2 mm bronze? We wire-cut carbide inserts overnight and e-mail you the CpK before your coffee cools.
Send your STEP, DXF—or even a napkin sketch to Precise works +
You’ll receive a DFM, die-flow video and piece-part quote within 48 h.
Contáctenos – preciseworksplus.com
From carbide rod to clean-edge part—we design the die, we build the press, we hit the tolerance.
