YC/T 37.4-2003 Determination of physical properties of filter rods Part 4: Hardness

This part specifies the determination method of filter rod hardness. This part is applicable to filter rods of various specifications. YC/T 37.4-2003 Determination of physical properties of filter rods Part 4: Hardness YC/T37.4-2003 Standard download decompression password: www.bzxz.net

This part is the fourth part of the three series of standards for the determination of physical properties of YC/T37.4-2003. This series of standards consists of the following parts: Part 1: Length photoelectric method; Part 2: Circumference photoelectric method; Part 3: Absorption resistance; Part 4: Convexity; Part 5: Moisture content; Part 6: Appearance, This part replaces the YC/T37.4-1996 Filterability Determination Part 4: Sealing, and the main changes compared with YC/T3.4-3 are as follows: the technical requirements of the test instrument are improved: the determination method is changed from the three-point method to the three-point method, and there is no restriction on the compression position. Part 6: The National Tobacco Monopoly Administration proposed: Part 1: The National Tobacco Standardization Technical Committee (41) The original part started by: National Tobacco Quality Supervision and Inspection Center The main people who started this part: Xiaomin, Xingnian, Yuehang, Cheng Beicheng, Li Xiaohui, 1
1 Maowei
Determination of physical properties of filter rods
Part 4 Hardness
The original specification of YC/T7 hardness determination method. This part of the station is due to the ability of various regulations. 2. The original buried
YC/T37.4—2003
In a certain period of time, the diameter of the sample is subjected to a certain pressure. The ratio of the diameter under pressure to the diameter before pressure change is 3.1 The required instrument should meet the following requirements: a solution to the sample is applied at the south point of the diameter, the pressure head should be 4:2, 00-0.01) of the plane, the sample can be viewed in advance: The small effective pressure of the person who is under pressure is (49-1) mN. The delivery speed is (0.55_0.0s) mm/g. The negative pressure (2.9410.0) N. The pressure is 15+1. The small effective pressure should be calculated after the pre-pressure is applied. The pressure is against the starting position of the test railing (the pressure before the pressure is fixed at 5:0:0). The test railing should be fixed on the device only. The test railing cannot be against the vehicle when it is subjected to the test. The test type should be at least 20.0m1: rectangular plane. The specimen should also be in the same square with the size of 0) 0m accurate to 0.
3.2 Standard sample, (compression screen accurate to 30.C63m. 4 Measurement steps
4.1 Turn on the instrument power. Make sure the scale is stable. Then use the standard sample to calibrate the instrument's zero point and full compensation to make the instrument's display consistent with the calibration value of the standard. 4.3 Place the rounded sample on the instrument's baffle 1:4.4 Before pressing the sample, measure the pre-pressure of the sample. 4.5 Drive the instrument flow pressure, and print the automatic timer. 4.61 : 1) When the pressure is removed, the instrument will display the trapped disk, or directly print the measurement results: 5 The result indicates the hardness of each filter (press the formula):
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hardness;
2 The unit of measurement of each point is meter (mm)
"The formula is detailed in the manual, the unit of measurement is meter (d) The sample is returned to the normal box. The unit is rate (mm) x: 00%
YC/T 37.4-2003
The determination result shall be expressed as a percentage of length with an accuracy of 0.1%. 5. 2
The determination report
shall include the following:
--No. of this part of YC/T37:
Specimen label and description:
Determination time, instrument used and model; determination environment and determination results.
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