Position : Quality Control Engineer - Heat Treatment (Gas Nitriding) Department : Quality Assurance / Metallurgy Location : Heat Treatment / Nitriding Plant Company : Thaai Casting Limited
1. Role Summary
The Quality Control Engineer - Heat Treatment is responsible for ensuring the quality and metallurgical integrity of components processed through the Gas Nitriding furnace . The role involves process monitoring, metallurgical validation, hardness testing, case depth verification, documentation control, and compliance with customer specifications .
1. Key ResponsibilitiesProcess Quality Control
- Monitor and verify Gas Nitriding process parameters such as:
- Temperature
- Ammonia flow rate
- Dissociation rate
- Holding time
- Cooling cycle
- Ensure furnace parameters follow approved process recipes and work instructions .
- Verify furnace loading pattern and batch identification .
Inspection & Testing
- Conduct and verify:
- Surface hardness testing (HV / HRC) :
- Case depth measurement :
- Microstructure analysis :
- Compound layer thickness verification :
- Perform metallurgical testing using microscope and microhardness tester .
- Prepare and analyze nital etched samples for case depth verification .
Documentation & Traceability
- Maintain heat treatment batch records, furnace charts, and inspection reports .
- Ensure traceability from raw material to final heat-treated component .
- Prepare quality documentation for PPAP / customer submission .
Process Validation
- Validate first-off samples after nitriding .
- Support PPAP, process capability studies, and validation trials .
- Monitor Cp/Cpk of critical characteristics related to nitriding.
Non-Conformance Management
- Identify heat treatment defects , including:
- Low hardness
- Excess compound layer
- Uneven case depth
- Distortion
- Raise NCR (Non-Conformance Reports)
and support root cause analysis.
- Implement corrective and preventive actions (CAPA) .
Customer Compliance
- Ensure heat treatment process meets customer specifications such as Flender, ZF, Daimler, etc. :
- Support customer audits and process audits .
- Ensure compliance with IATF 16949 requirements .