The electrical functions of anti-static shoes are mainly:
First, Baotou anti-impact function
The impact test is carried out with a regular weight steel impact hammer. The height of the gap under the toe cap should be less than the regular value when the toe cap is impacted, and the toe cap should not exhibit any penetrating crack in the direction of the test axis. Anti-static shoes are worth noting that the rules of the impact hammer, the height of the impact hammer and the structure of the experimental machine are different in each country's specifications. The practice test should be differentiated.
Second, anti-piercing function
The test machine is equipped with a pressure plate on which the test nail is placed. The test nail is a head that cuts off the top, and the hardness of the nail head should be greater than 60HRC. The sole sample is placed on the chassis of the experimental machine, the orientation allows the test nail to be pierced through the outsole, and the experimental nail pierces the sole at a speed of 10 mm/min ± 3 mm/min until the penetration stops, and the maximum required is recorded. force. Experiment with 4 points on each sole (at least 1 point in the heel), each point is not less than 30mm, and the margin from the insole is greater than 10mm. The bottom of the anti-slip block should be pierced between the blocks. Two of the four points should be tested within an interval of 10-15 mm from the margin of the planting site. If humidity affects the results, the sole should be immersed in deionized water at 20 °C ± 2 °C for 16 ± 1 h before the test.
Third, the electrical function of conductive shoes and anti-static shoes
After the shoe sample is adjusted in a dry and wet atmosphere, the clean steel ball is filled into the human shoe and placed on the metal probe device. The first two probes and the third probe are measured using a regular resistance test instrument. Resistance between. Under normal circumstances, the resistance of conductive shoes should not be greater than l00K ohms; the resistance of anti-static shoes should be between 100K ohms and 100M ohms.