A vertical furnace test instrument for fire resistance of construction products such as walls, doors, and partitions under the influence of external flame. These furnaces will be in accordance with test methods such as ASTM E119 and ISO 834 which govern the testing procedures, temperature curves and performance criteria.
The system is comprised of a vertical installation for the specimen along with putting in place control heating. Gas burners can reach temperatures in excess of 1,000°C (1,832°F) within 15 minutes which provides real-life fire thermal conditions. These sensors then chart increases in temperature on the exposed and unexposed sides of the test sample. In terms of compliance, the unexposed surface is not allowed to reach any temperature greater than 140°C (284°F) above ambient temperature at any point during the test.
It employed a furnace with a thermocouple that measured the thermal performance of the sample. These devices take readings of changes in temperature and are designed to keep the test on the standard time-temperature curve. The inside of the furnace is with high-density refractory materials for uniform heat distribution and reduction in thermal gradients. This way leads to accurate and reproducible results during tests.
Furnace airflow regulation ensures complete combustion and useful heating output throughout the house. Quality dampers and pressure controllers should be in place to provide precision control with a consistent amount of oxygen, affecting the reliability of the tests. Another example was demonstrated in a UL case study which pointed to the fact that uncontrolled airflow variations created up to a 12% test results discrepancy reiterating the necessity for exact control.
Load frames help in restraining the test specimen during testing and emulate structural loads. The frames have a capacity of up to 1,000 kN, which replicates the load walls or doors may be subject to in actual use. Under these load conditions, it may be determined whether the specimen sustains its integrity under thermal and mechanical combined stress.
Test cycles normally take between 30 mins — 4 hrs depending on which section of an item it verifies, and its standards. One recent fire-rated door test resulted in a 90-minute resistance, meeting requirements for commercial usage. This data guarantees manufacturers to get their products certified for safety in some specific cases.
As Edison clearly put it…”Genius is 1% inspiration and 99% perspiration”. This embodies the principle: The Best Testing Using a Fire Resistance Test Furnace for Vertical applications; there is nothing better than strict testing to ensure the construction materials are fire-safe. Browse for Fire Resistance Test Furnace for Vertical