ISO3795德國BKF型內飾材料燃燒試驗箱 原裝進口Wazau水平垂直燃燒試驗箱
試驗箱滿足標準ISO3795,DIN75200和MVSS302,用于測定公路車輛、拖拉機以及農(nóng)、林用機械車輛等的內飾材料(例如紡織品、塑料及其他合成材料)的水平燃燒速率(燃燒距離和燃燒時間)
Test Device in accordance with DIN 75200, ISO 3795, MVSS 302
This standard specifies a method for determining the horizontal burning rate of
materials used in the occupant compartment of road vehicles (for example, passenger
cars, lorries/trucks, estate cars, coaches), and of tractors and machinery for agriculture
and forestry, after exposure to a small flame.
This method permits testing of materials and parts of the vehicle interior equipment
individually or in combination up to a thickness of 13 mm. It is used to judge the
uniformity of production lots of such materials with respect to their burning behavior.
Because of many differences between the real world situation (application and
orientation within vehicle interior, conditions of use, ignition source, etc.) and the
precise test conditions specified in this
standard, this method cannot be considered as suitable for evaluation of all true
in-vehicle burning characteristics.
1.Principle
A sample is held horizontally in a U-shaped holder and is exposed to the action of a
defined low-energy flame for 15 s in a combustion chamber, the flame acting on the
free end of the sample. The test determines if and when the flame extinguishes or the
time in which the flame passes a measured distance.
2. Apparatus
2.1 Combustion chamber Made of polished stainless steel. The front of the chamber
contains a flame-resistant observation window, which covers the front, constructed as
an access panel.
The buttom of the chamber has vent holes, and the top has a vent slot all around. The
combustion chamber is placed on four feet, 100 mm high.
The chamber has a hole at one end for the introduction of the sample holder
containing the sample; in the opposite end, a hole is provided for the gas line. Melted
material is caught in a pan which is placed on the buttom of the chamber between vent
holes without covering any vent hole area.
2.2 Sample holder, consisting of two U-shaped metal plates or frames of
corrosion-proof material.
The lower plate is equipped with pins, the upper one with corresponding holes in
order to ensure consistent holding of the sample. The pins also serve as measuring
points at the beginning and the end of the burning distance.
A support is provided in the form of 0.25 mm diameter heat-resistant wires spanning
the frame at 25 mm intervals over the buttom U-shaped frame.
The plane of the lower side of samples is 178 mm above the floor plate. The distance
of the front edge of the sample holder from the end of the chamber is 22 mm; the
distance of the longitudinal sides of the sample holder from the sides of the chamber
is 50 mm.
2.3 Gas burner. The small ignition source is provided by a Bunsen burner having an
inside diameter of 9.5 mm. It is located in the test cabinet so that the centre of its
nozzle is 19 mm below the centre of the buttom edge of the open end of the sample.
2.4. Test gas. The gas supplied to the burner shall have a caloric value of
approximately 38 MJ/m3 (for exam