+3725216168
9.00-17.00
info@ldsmetall.eu
denis.lugovets@gmail.com
Serial CNC Turning — AISI Stainless & Alloy Steel Pa
Serial CNC Turning for Repeatable, Cost-Efficient Parts (AISI Stainless & Alloy Steels)
Batch and mass production of turned components with tight repeatability, stable cycle times, and clear cost structure. We focus on fixtures, toolpath optimization, and in-process control to keep PPM low and lead times predictable.
Materials — AISI (immediate reference)
- Austenitic stainless: AISI 303 (EN 1.4305), 304/304L (1.4301/1.4307), 316/316L (1.4401/1.4404)
- Martensitic/ferritic stainless: AISI 420 (1.4021/1.4034), 430F (1.4105)
- Precipitation hardening: AISI 17-4PH / 630 (1.4542)
- Carbon & alloy steels: AISI 1045 (C45E / 1.1191), AISI 4140 (42CrMo4 / 1.7225), free-cutting steels (11SMn30 / 1.0715)
- Non-ferrous: Al 6082/6061, brass CW614N (CuZn39Pb3), bronze grades
- Engineering plastics: POM (Delrin), PA6G, PEEK, PTFE
Certification on request: EN 10204 3.1, chemical/grade verification, RoHS/REACH compliance statements.
What we optimize for serial turning
- Cycle time & tool life: tuned cutting data, coolant strategy, chip control for long runs.
- Repeatability: master samples, offset strategy, gage R&R; SPC on critical features.
- Complex features in one setup: OD/ID turning, grooving, parting, drilling, tapping, thread turning; milling of flats/slots (live tooling).
- Threads: Metric (M), UNC/UNF, G/R (BSPP/BSPT), NPT/NPTF, custom per drawing; knurling and chamfer standards for assembly fit.
- Finishing & logistics: deburr per spec, Ra control, passivation, zinc/nickel plating, anodizing (Al), laser marking, unit or cell packaging with VCI and barcodes.
Quality & typical specs for production lots
| Dimensional tolerances | Per drawing; on critical diameters typically ±0.01–0.03 mm (size-dependent) |
|---|---|
| Surface roughness | Ra 0.8–3.2 µm (as specified), polishing on request |
| Batch size | From 50 pcs pilot runs to tens of thousands |
| Documentation | FAI/ISIR, CMM reports, SPC charts, CoC, material certs |
| Part families | Bushings, spacers, shafts, sleeves, hydraulic/pneumatic fittings, connectors, nuts |
DFM to reduce cost per part
- Unify corner radii and chamfers across the family to reduce tool changes.
- Prefer standard thread lengths; avoid unnecessary undercuts.
- Specify functional roughness only on critical surfaces.
- Allow slightly larger tolerances on non-mating diameters.
- Consolidate materials (e.g., 304L vs 304) where properties allow, to stabilize supply.
Request a serial turning quote
Send drawings (STEP + PDF), annual volume, target price, and quality docs required (FAI/SPC). We’ll propose a stable process and a clear unit-cost breakdown.
FAQ
Which AISI grades machine best for serial turning?
For stainless, AISI 303 and 430F offer higher machinability. For strength/cost, AISI 1045 and 4140 are common. Use 17-4PH when you need high strength and corrosion resistance.
What tolerances and Ra do you keep in production?
We hold tolerances per drawing; on critical features typical stability is within ±0.01–0.03 mm with Ra 0.8–1.6 µm where specified (size and geometry dependent).
Can you supply with plating, passivation, and marking?
Yes. We handle passivation (stainless), zinc/nickel plating, anodizing (Al), and laser marking with lot/batch info.
What documentation do you provide for series?
FAI/ISIR, measurement reports (CMM), SPC on key dimensions, CoC, and EN 10204 3.1 material certificates on request.
