{"L1_core": {"domain": "surface_treatment", "category": "raw_finish", "entity_type": "process"}, "L2_process": {"types": {"as_cast": {"description": "Direct from casting"}, "as_forged": {"description": "Direct from forging"}, "as_machined": {"description": "Direct from machining process"}}, "standards": ["ISO 4287", "ISO 1302"], "parameters": {"dimensional_tolerance": "per_process", "surface_roughness_Ra_um": [1.6, 25]}}, "L5_metadata": {"updated": "2026-01-04", "version": "2.0"}, "L3_relations": {"applies_to": ["metals", "plastics", "composites"], "related_processes": ["machining", "casting", "forging"]}}