The Sriperumbudur and Oragadam manufacturing belt
The stretch from Sriperumbudur to Oragadam in Kanchipuram district, with several SIPCOT parks, among them Irungattukottai and Oragadam, is one of India's main automobile manufacturing areas. Vehicle plants sit here alongside large electronics and mobile phone manufacturing units, and they draw on a wide base of suppliers in the belt and in the nearby Chennai estates.
Suppliers here make engine and transmission parts, brake components, wiring harnesses, motors, plastic interior parts and electronic assemblies. Most of them work to customer traceability rules: a part number and a date or batch code, usually encoded in a 2D Data Matrix code that is scanned at assembly, often with a human-readable serial alongside.
Electronics and mobile phone plants bring a different scale of marking: very small codes on housings and boards, read by automated equipment at each test station. Here the laser has to mark legibly without affecting the function or finish of the part.
For these suppliers, a laser marking machine in Sriperumbudur is less a standalone tool than a station in the line, fed by a fixture or conveyor and linked to the line PLC and a code reader.
Line-ready machines for the belt
- Online laser. An online laser marking machine marks parts on a conveyor or in a cell, triggered by the PLC, and can be paired with a code reader for verification. NMB's On-line Fiber Laser is meant for this flying-mark duty.
- Bench fiber laser. A bench fiber laser suits lower-volume parts and rework stations, where parts are loaded by hand. Codes marked this way can be graded to ISO/IEC 29158 like line-marked parts.
- UV laser. Electronics and mobile phone assemblers marking plastic housings and small components can use a UV laser (355 nm) for clean, low-heat marks.
- MOPA laser. Anodised aluminium parts and stainless trim mark darker, or in controlled colours on stainless steel, with a MOPA laser.
- Dot pin. Chassis members and castings that are painted after marking keep a dot pin mark better than a surface laser mark.
- Cable coding. Wire and cable for harnesses is commonly coded by continuous inkjet printing, and NMB deals with Markem-Imaje systems for this, while laser marking suits connectors and sleeves.
Application guides for suppliers in the belt
Powertrain suppliers can start with engine parts and gears. Brake and chassis suppliers can read brake pads and chassis, and motor makers have dedicated pages on wiper motors and window motors.
Wiring suppliers should see cables and connectors. Electronics assemblers can read switches and the guides on plastic and ABS for moulded parts. Gauges and fixtures cover the tool room side, and metal parts covers general machined and pressed components. Motor and wiring suppliers often deal with plastic and metal on the same assembly, for example a moulded housing with a steel bracket, and may need a mark from each of two sources.
Buying a laser marking machine in Sriperumbudur or Oragadam
NMB Enterprises is based at Poonamallee, on the Chennai side of the highway to Sriperumbudur, and suppliers in the belt reach NMB by phone or WhatsApp on 098417 60722.
Share photos of the part and the marking face, the material and finish, your customer's marking specification and the exact code content. For line work, add the cycle time per part and whether the code must be read back after marking. With these details NMB can suggest a suitable machine from its IndoForeign fiber laser range, or a dot pin marker where the part will be painted. If the station will mark several part variants, say how many and how the line identifies each one, so that the marker can switch programs automatically from a PLC signal. Mention any customer audit or PPAP approval the marking has to pass, so that the recommendation covers code grading and verification from the start.