Основные элементы для огневых испытаний?
?Fire Resistance Limit Test?
Simulates fire conditions per GB/T 7633 to record structural deformation, flame penetration time, and thermal conductivity data.
?Standard: GB/T 7633 (equivalent to ISO 834)
?Metrics:
Structural integrity duration (e.g., ≥90 min for Grade A doors)
Backface temperature rise ≤140°C (insulation criteria)
Flame/smoke leakage time recording
Air Tightness Test?
Measures air leakage volume under differential pressure.
?Condition: 50 Pa pressure differential
?Threshold: ≤1.5 m3/(m·h) air leakage rate
?Methodology:
Static pressure test (EN 12101-8/GB/T 7106)
Laser particle counting for smoke-blocking validation
?Impact Resistance Test?
Evaluates structural robustness against physical force.
?Procedure:
30 kg sandbag free-fall from 1.5m height
Impact on door center (per QB/T 4868 cyclic test protocol)
?Pass/Fail Criteria:
No cracks, permanent deformation >3 мм или функциональный сбой (например, разблокировка защелки)
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