The product description

* applicable industry: the test machine is a vertical or horizontal combustion test, and according to the specification of ul-94 on plastic materials, insulation materials..The flame resistance of the test piece was evaluated.

* applicable standard :UL 94:2006 /ASTM D 5025 /ASTM D 5207/ /IEC60695/GB 5169/GB2408/ ISO 9772:2001/ iso10093-1998 /GB/t8332-2008

* combustion grade test :(a) vertical combustion V0~V2, (b) horizontal combustion HB, (c) thin wood combustion vtm-0 ~ vtm-2,

(d) 500W vertical combustion 5VA~5VB, (e) foam plastics horizontal combustion: hf-1, hf-2, HBF (optional)

HB, V, VMT gas flow rate is 105ml/min, and back pressure is 10mm water column or equal pressure.

The 5V gas flow rate is 965ml/min, 125 + / - 25mm water column or equal pressure.

Hf-1, hf-2, HBF: gas methane flow rate is 960 + / 30ml/min, back pressure 50 + / mm water column or equivalent pressure

* test method: ignition method: automatic ignition, and manual firearm ignition;

Transparent observation safety Windows, hand holes, interior lighting, top smoke exhaust devices.

* test box :(1) 950X730X1450mm(L*W*H)(1 cubic meter), all made of stainless steel;It has the features of beautiful appearance, rust prevention and corrosion prevention

(2) the box is equipped with a strong air exhaust and smoke exhaust system at the top of the box. When the test is completed, the system is opened at the same time as the air supply system to discharge the waste gas

To the outside;During the test, the system is closed.Combustion chamber appearance: 1250X730X1450mm

(3) a toughened glass observation window that can be sealed on the front of the box during the test is provided to facilitate the observation of the test.

(4) there is a hole under the glass observation window that can extend the hand and arm to the test box for operation. This hole is sealed

Gloves. The operator USES sealed gloves to operate the burner.

* temperature measurement system: with temperature sensor, temperature of different flame can be measured.

Test flame calibration device: standard thermocouple + temperature measuring copper block, temperature display

(1) thermal sensor (copper catheter and thermocouple) -- the catheter structure shall be electrolytic copper with extremely high conductivity.

Weight (before drilling) : 1.76 + 0.01g, diameter: 5.50mm + 0.01;

Of 125mm flame: weight (before punching) : 10 + 0.01g, diameter: 9.00mm + 0.01

(2) model K thermocouple, with stainless steel tube of 0.5mm diameter as coat.

(3) digital temperature scale and k-type thermocouple are matched.The readings can be 1050 ℃.

(4) the whole test system is: movable type, which is placed in the test box for temperature measurement.

(5) equipped with electronic code table: accurate to 0.1s (standby at temperature check)

* test device and test fixture:

(1) main fixture: test bracket and burner

(2) test bracket: dividing bracket and vertical bracket and HF combustion bracket

(3) combustion blowtorch: it meets the requirements of ASTM D 5025-99, standard power: 500W vertical blow lamp, 225W horizontal blow lamp, and flame spraying

Nozzle diameter: 0.90 + 0.03mm, nozzle lamp length: 1.60 + 0.05mm, nozzle height from air inlet is 102mm.Blowtorch Angle:

Level is 90 degrees, vertical to 20 degrees (longitudinal axis in a vertical plane and vertical direction of 20 ° Angle), 45 degrees are adjustable

Section, natural air intake, inner flame 19~40mm, outer flame 20~125mm, adjustable.

(4) wedge: increase the wedge, and the blowtorch safety shall be installed on the wedge, which can be moved easily and accurately back to the specified position.

(5) it is equipped with a set of ruler that can measure the internal and external flame of horizontal and vertical combustion.

(6) a steel ruler of 500MM to 1MM is provided for testing.

* gas and test consumables: (1) gas: methane (purity > 98%, certified by the supplier), calorific value: 998BTU

British thermal units/cubic feet.37.1 megajoules per cubic meter.(own)

* flow control system:

(1) electromagnetic valve, flow meter, pressure reducing valve, u-shaped back pressure pipe (differential pressure meter) are adopted by American MATHESON and DWYER

The company's original equipment (the above is dedicated methane flow rate and pressure gauge, and the test accuracy will be affected by the replacement of other 100 methane types)

(2) flow meter: flow range of 1000ml/min

(3) combustion pressure reducing valve: 1, which can adjust the gas flow rate to 10 pounds/cubic inch

(4) back pressure pipe: water column height accuracy to 5mm or below

(5) back pressure liquid: red oil

* timing system:

This test device provides timing system: controlled by touch screen and PLC, recording combustion time, first combustion time and second combustion respectively

The function of burning time and residual burning time is as follows:

(1) combustion time: when the burning burner reaches the specified position, it will automatically record the spraying time (set according to the regulation: for example, the burning of 15S).

By observing the set time, the experimenter quickly turned the wedge and removed the burner as soon as the jet time arrived.

(2) the first delay combustion time: when the above combustion time is reached, this timer starts automatically;When the flame goes out, start the recording with your foot

The first continuous combustion time t1,

(3) second delay combustion: after the second combustion, repeat the first step combustion process, and record the second delay combustion time t2 with the pedal start-up.

(4) residual burning time: record the residual burning time through observation

(5) the corresponding buzzer alarm is provided

* test device and test fixture:

Jig operating mechanism: external displacement of sample jig or burner seat

Height adjustment of sample: electric;

Leveling adjustment: manual.

Equipped with: sealed gloves, easy to adjust the sample or to prevent the test