GB 8031-2015Industrial electric blasting cap (English PDF)

3.5 Electrostatic Sensitivity a/kV >=8 >=10 >=12 >= 25

Note. The table in bold mandatory elements. a static sensitivity expressed in feet between the line and the envelope electrostatic withstand voltage.

5.6.3 Seismic Performance After the vibration test, industrial electric detonators should not explode, structural damage, short circuit, open circuit and resistor unstable phenomenon, the whole resistance should meet

5.6.1 requirements.

5.6.4 Initiating Capacity No. 6 industrial electric detonator shall ripped through 4mm thick sheet of lead No. 8 industrial electric detonator shall ripped through 5mm thick sheet of lead perforation diameter should be not less than 7mm.

5.6.5 tensile properties Loss not lower than 19.6N static pull effect lasted 1min, closures and feet line of industrial electric detonators should not occur visual evidence Or bad move, remove the ignition test done, it should explode completely.

5.6.6 water resistance

5.6.6.1 ordinary electric detonators and electric detonators Mine Xu was immersed in water to maintain pressure 0.05MPa 4h, after removing the test do get angry, should burst Fried completely.

5.6.6.2 seismic exploration electric detonator was immersed in water pressure of 0.3MPa maintained 72h, after removing the ignition test done, it should explode completely.

5.6.7 heat resistance 4h kept not lower than 100 °C environment, industrial electric detonators should not explode.

5.6.8 flammable gas safety Permitted Electric Detonator detonate when the coal mine at a concentration of 9% of the combustible gas, the gas can not ignite.

5.6.9 Delay Time Extended electric detonator in the name of an extension of time should generally be in line with the requirements of Table 3, the delay time can be negotiated other series with the user. Table 3 in the name of an extension of time series

ms Series 2 ms ms

ms The first series of 4 ms ms 1/4 second series Half a second series Second series 100 12.5 00 12.5 00 12.5 00 0.6 00 0.25 00 0.125 00 0.50 2 25 25 12.6 37.5 25 12.6 37.5 12.637.5 0.6 1.5 1 0.250.126 0.375 0.50 0.26 0.75 1.00 0.51 1.50 350 50 37.6 62.5 37.662.5 37.6 62.5 50 2 1.6 2.5 1.00 0.76 1.25 2.00 0.625 0.500.376 1.51 2.50 475 75 62.6 92.5 62.687.5 62.6 87.5 75 3 2.6 3.5 1.50 1.26 1.75 3.00 0.875 0.750.626 2.51 3.50 5110 92.6 130.0 112.5 87.6 4 3.6 4.5 10087.6112.4100 1.000.876 1.125 2.00 1.76 2.25 4.00 3.51 4.50 6150 130.1 175.0 - - - 125,112.6 137.5 5 4.6 5.5 2.50 2.26 1.375 1.251.126 2.75 5.00 4.51 5.50 7200 175.1 225.0 - - - 150,137.6 162.5 6 5.6 6.5 3.00 2.76 3.25 6.00 1.625 1.501.376 5.51 6.50 8250 225.1 280.0 - - - 175,162.6 187.5 7 6.6 7.5 - - - 3.50 3.26 3.75 7.00 6.51 7.50 9310 280.1 345.0 - - - 200,187.6 212.5 - - - - - - 4.00 3.76 4.25 8.00 7.51 8.50 10380 345.1 420.0 - - - 225,212.6 237.5 - - - - - - 4.50 4.26 4.74 9.00 8.51 9.50 11 460 420.1 505.0 - - - 250237.6 262.5 - - - - - - - - - 10.009.5110.49 12550 505.1 600.0 - - - 287.5 275262.6 - - - - - - - - - - - - 13650 600.1 705.0 - - - 300,287.6 312.5 - - - - - - - - - - - - 14760 705.1 820.0 - - - 337.5 325312.6 - - - - - - - - - - - - 15880 820.1 950.0 - - - 362.5 350337.6 - - - - - - - - - - - - 161020 1110.0 950.1 - - - 387.5 375362.6 - - - - - - - - - - - - 12001110.11300.0 17 - - - 400387.6 412.5 - - - - - - - - - - - - 14001300.11550.0 18 - - - 425412.6 437.5 - - - - - - - - - - - - 17001550.11850.0 19 - - - 450437.6 462.5 - - - - - - - - - - - - 20001850.12149.9 20 - - - 475462.6 487.5 - - - - - - - - - - - - 21 - - - - - - 500487.6 512.4 - - - - - - - - - - - -

Note 1. Table 2 ms series Coal Mine Permissible MS Delay time by electric detonators, the series is mandatory.

5.1 Appearance

5.1.1 The surface should not have floating medicine, rust, blisters, cracking, incomplete.

5.1.2 Permitted Electric Detonator Mine foot line should be composed of two different colors of insulated wire composition, there should be no wire insulation be damaged and the core wire corrosion.

5.2 Coding Industrial electric detonator coding shall comply with the requirements of GA441. Do not mark paragraph

5.3 Each hair extension electric detonators other segments should be clearly marked area. Coal Mine Permissible extension of electric detonators using foot line segment color area when not, should adopt The colors used are shown in Table 1. Table

1 Coal Mine Permissible extension of electric detonators paragraphs foot line color Block number 12345 Foot line color gray, red gray, yellow gray, blue, green, white, red

5.4.1 length tolerance should be ± 5% of the nominal value.

5.4.2 Insulation thinnest point thickness. PVC material shall not be less than 0.3mm; other materials should not be less than 0.25mm.

5.4.3 anti-high-voltage breakdown properties. pass to (5000 ± 50) V AC voltage, continuous 60s, to the leakage current value divided into. insulation class a Level not higher than 0.1mA/m; insulation class II is not higher than 1.2mA/m.

5.5 Material Industrial electric detonator should not use paper envelope; Permitted Electric Detonator coal mine should not use aluminum and its alloys parts.

5.6.1 Full resistance

5.6.1.1 When the whole industrial electric detonators resistance less than or equal to 3Omega, relative error should be less than the nominal value ± 25%.

5.6.1.2 When the whole is greater than the resistance 3Omega, relative error should be less than the nominal value ± 15%.

5.6.2 Electrical Properties Electrical performance of industrial electric detonator shall comply with the requirements of Table 2. Table

2 Industrial electric detonator electrical performance project Technical Specifications Ordinary electric detonator, electric detonator Xu Mine Type of Type I II III Seismic exploration electric detonators The maximum non-firing current/A >=0.20 >=0.30 >=0.80 >=

0.20 The minimum firing current/A <=0.45 <=1.00 <=2.50 <=

0.45 Combustion can punch/(A2 · ms) >=2.0 <=18.0 80.0 ~ 140.0 0.8 ~

6.4.2 Insulation thinnest point thickness. Press 18014-2008 in

6.1.2 with GB/T performed. Each of the three foot line measurement, measurement point spacing Not less than 300mm, the arithmetic average of two foot line measured values as a measurement result.

6.4.3 anti-high-voltage breakdown properties. Cut foot detonator cord, which is wound into a spiral into a beaker containing 3% sodium chloride aqueous solution, the pass In (5000 ± 50) V AC voltage, continuous 60s, measured leakage current value, and in terms of leakage current per unit length to mA/m.

6.5 Full resistance With a resolution of not less than 0.1Omega, measuring current less than 30mA of resistance measuring instrument and the sample foot cable connected in the resistance measuring instrument Read the value on the work of state resistance and resistance measuring instrument recording.

6.6 Maximum current misfire Through the sample to meet the requirements of Table 2 of constant DC current (with a resolution of no less than the current measuring instrument measuring 0.01A), continued 5min, observe whether the sample explosion, and record the test results. Allow the test sample after the series.

6.7 The minimum firing current Conducted in accordance with WJ/T 9044's.

6.8 Combustion can punch Conducted in accordance with WJ/T 9039's.

6.9 Initiating current series Connect the 20 rounds of the sample series, through a constant DC current requirements in accordance with Table 2 (with a resolution of not less than 0.05A current measuring instrument Measurement), the duration of not less than 20ms, to observe whether the sample explosive, and record the test results.

6.10 Electrostatic Sensitivity

6.10.1 ordinary electric detonators and electric detonators Coal Mine permissible according to the provisions WJ/T 9042's. Wherein. the role of discharge from the capacitor capacity 2000pF, series resistance 0kOmega.

6.10.2 electric detonators geological exploration conducted in accordance with WJ/T 9042's. Wherein. the role of discharge from the capacitance of the capacitor is 500pF, string Union resistance is 5kOmega.

6.11 Seismic Performance The method will be defined by the level of

6.5 full inspection WJ231 resistance sample into line with the requirements, the cam speed is 60r/min ± 1r/min, drop height 150mm ± 2mm wooden central vibration test machine, the vibration test machine wooden plugged the gap, pressed cover, Continuous vibration 10min, remove the sample checked by the method

6.5 full resistance of the sample, read and record the value.

6.12 Initiating Capacity

6.12.1 according to the provisions of GB/T 13226 were;

6.12.2 allows the use of other test methods;

6.12.3 allows initiating the series of current and deferred time trial merger.

6.13 Tensile Properties Applying a corresponding pair of lines between the sample housing and reverse foot line static tension, sustained 1min, remove the sample visual inspection and test records result.

6.14 water resistance Conducted in accordance with GB/T 13227 of.

6.15 heat resistance Conducted in accordance with WJ/T 9043.1 of.

6.16 flammable gas safety Conducted according to the provisions of GB 18096.

6.17 Delay Time According to the provisions of GB/T 13225 conducted, wherein. time meter resolution is not less than 0.1ms; detonating current (constant DC current) I type is 1.2A; II type is 1.5A; III type is 3.5A. Extended time measurement Supplementary Regulations Appendix A.

6.18 inverted initiation capability The horizontal grid within the grid holder, the sample was fixed to an explosion inside the detonator holder, and make it perpendicular to the lower inverted grid side Central location, close to the bottom of the grid (see Appendix B), will be connected to the foot line of the sample and detonating wires, through to meet the requirements of Table 2. The constant straight Current flow, after initiation, detection stereotype perforation diameter, and record the test results.

6.17 Invert the initial capacity 20 - - 5.6.10 6.18 - - - -

Note. "sqrt" indicates will review the project, "-" indicates no items seized.

7.2.2 Type inspection Industrial electric detonator type inspection items are shown in Table 5. Table

5 Industrial electric detonator type inspection items No. Project General electric detonators and electric detonators Mine Xu seismic exploration electric detonators Test items required Reg number Testing Methods Reg number Test items required Reg number Testing Methods Reg number

7.2 Test Project

7.2.1 factory inspection Industrial electric detonator factory inspection items are shown in Table 4. Table

4 Industrial electric detonator factory inspection items Test item number General electric detonators and electric detonators Mine Xu seismic exploration electric detonators Batch test cycle test required Reg number Testing method The reg number Batch test cycle test required Reg number Testing method The reg number