{"L1_core": {"domain": "manufacturing", "category": "process", "identifier": "alw_soldadura_aluminio", "subcategory": "joining"}, "L2_process": {"type": "welding", "fusion": true, "method": "aluminum_welding", "temperature": "high", "material_base": "aluminum"}, "L4_quality": {"controls": ["visual_inspection", "ndt_ut_rt_pt", "mechanical_tests", "porosity_check", "penetration_verification"], "tolerances": "per_wps", "certifications": ["EN_ISO_9606", "AWS_D1.2"]}, "L5_metadata": {"source": "technical_standards", "confidence": 0.95, "last_updated": "2026-01-04", "industry_codes": ["aerospace", "automotive", "marine", "construction"]}, "L3_technical": {"equipment": ["tig_welder", "mig_pulse_welder", "laser_welder", "fsw_machine"], "processes": ["GTAW", "GMAW", "laser", "friction_stir"], "parameters": {"preheat_c": "100-200", "current_type": "AC_TIG_DC_MIG", "speed_mm_min": "150-400", "shielding_gas": "argon_helium", "melting_point_c": 660}}}