It is suitable for the ignitability test of fire surfaces when the material comes in contact with materials that have a thickness of greater than 7 mm. The test mainly evaluates the material’s response to radiant heat and determines whether it will ignite under certain conditions. The test can distinguish which materials are easily ignitable and which materials are more resistant to ignition, helping to assess the fire hazard of different materials.
Compliance: ASTM D6413-20: Flame Resistance of Textiles (Vertical Test)
Main Performance Parameters:
Radiation Source: Includes a radiant heating element, pressing plate mechanism, supporting frame, temperature recorder, gas system, and acquisition/processing components.
Specimen Support Frame, Guard Plate, and Pressure Plate:
The support frame is made of stainless steel, with a square step design that is 15 mm thick and 25 mm × 25 mm in size, with a total size of 230 mm × 230 mm.
The side length of the horizontal guard plate is 220 mm, and its thickness is 4 mm. The horizontal shield is fixed 260 mm above the base frame by four feet, each with a diameter of 1 mm, installed at the corners of the shield. A circular opening with a diameter of 150 mm is cut in the center of the guard plate, and the upper edge of the opening is chamfered by 45°.
Two vertical guide rods, each less than 35 mm in length and 2 mm in diameter, are installed on the frame at the midpoint of each short side of the support frame. Below the guard plate, a 25 mm horizontal adjusting rod is installed to allow for precise height adjustments of the frame.
Radiation Cone:
The radiation cone has a rated power of 1 kW to 7 kW/m², with a heating element consisting of a stainless steel electric heating pipe, 50 mm in length and 8 mm in diameter. The heating element is wound into a truncated cone and installed inside an insulating material with a thickness of 1 mm and a nominal density of 10 kg/m³.
The radiation intensity can generate a radiant power of 10 kW/m² to 7 kW/m², ensuring uniform irradiance within ±5% deviation at the reference plane.
Ignition Mechanism:
The ignition mechanism includes an ignition arm, secondary ignition source, and cam.
The pilot flame is ejected from a nozzle made of stainless steel, installed at the end of the pilot tube. The flame is positioned above the radiation cone, and the gas plume and decomposition products emerge from the top surface of the cone.
The nozzle can be adjusted to ensure that the flame remains at a fixed point relative to the guard plate, with the center of the nozzle hole positioned 10 mm above the plate.
The ignition device uses automatic electronic ignition for high voltage, moving automatically to the test position and returning automatically after the test.
The ignition mechanism is driven by a stepper motor and a German Flender ball screw.
Specimen Cover Plate:
The cover plate is automatically opened and closed by a signal from the computer, made of 304 stainless steel with a thickness of 2 mm. The cover can completely enclose the guard plate and is equipped with a limit device to prevent contact with the guard plate. A handle is provided for easy removal.
Temperature Monitoring System:
The temperature control module uses well-known brands like Advantech (Taiwan) and Mitsubishi (Japan), with a temperature range of 0°C to 1000°C and a resolution of ±1°C.
Temperature control is achieved with a silicon-controlled rectifier (SCR) to regulate the output, with a maximum current of no less than 15 A.
