Fire Retardant Paints Burning Test Apparatus (Tunnel Method)
ZONSKY Fire Retardant Paints Test Apparatus (Tunnel Method) is a specialized device used to evaluate the fire-resistant performance of fire-retardant paints. In this test, paint-coated samples are placed in a tunnel-like chamber where they are exposed to controlled flame or heat conditions to simulate fire scenarios. The apparatus measures how well the paint slows down ignition, limits flame spread, and reduces heat release on the coated surface.Talk To Our Team
Compliance:
ASTM D3806/ISO 846/MIL-STD-810G
(Method 508.6)JIS Z 2911
Fire Resistance Paints Test Equipment Main Technical Parameters:
Tunnel Furnace:
The furnace is composed of an angle steel frame and ceramic fiber board (asbestos cement board).
The angle steel frame is welded by 35 mm × 30 × 100 mm × 610 mm × 2 mm angle steel. The top is made of steel and the frame is long and wide.
The flue end of the tunnel furnace is open; there is an air supply hole with a diameter of 25 mm at the center of the bottom of the tunnel furnace, 110 mm away from the base.
The observation window of the heat-resistant glass plate is located under the side of the specimen support. It is made of a piece of quartz glass or heat-resistant laurel glass with a length of 622 mm, a width of 50 mm, and a thickness of 3 mm. Mark the glass from 100 mm to 500 mm at one end at intervals of 25 mm. Above the observation window is a metal sunshade that slopes down 60°. Inside the specimen holder is a serrated stainless steel calibration plate with a pitch of 25 mm.
On the side of the test plate support, above the centerline of the burner, there is a thermocouple insertion hole with a diameter of 3 mm, so that the junction of the thermocouple is delivered to the back surface of the test piece.
The tunnel furnace should be placed in a room without forced ventilation.
Burner:
The burner is made of brass, with a top diameter of 20 mm and a height of about 200 mm. It has a gas burner with an adjustable air intake.
The fuel used is gas with purity over 95%.
The ignition system is a high-voltage electric automatic ignition.
Cover Plate:
The cover plate is composed of heat-insulating asbestos board and steel plate pressed on the asbestos board. Its dimensions are 600 mm in length, 90 mm in width, and 10 mm in thickness.
Flame Center Temperature Instrument:
The flame center temperature is measured by armored thermocouples with an accuracy of class I, type K, and an outer diameter of 2.0 mm. Range: 1300°C.
Temperature Record:
An intelligent PID temperature controller (with automatic calculation function) and high-precision PT100 thermocouple sensor and timer are adopted, with an accuracy of 0.5%±1.
ZONSKY manufactures Fire Retardant Paints Test Apparatus and other fire testing equipment and owns all copyrights of the products.
