Impact-resistant
The impact test is carried out with a steel impact hammer of the specified weight, and the clearance height under the Baotou should be less than the specified value when the Baotou is impacted, and there should be no penetrating cracks in the direction of the safety shoe line of the test shaft. It is worth noting that the regulations on the weight, specification, impact height and structure of the testing machine are different in the national standards, and should be distinguished in the actual test.
Puncture resistant
The testing machine is equipped with a pressure plate, and the pressure plate is equipped with a test nail, and the test nail is a head with a truncated tip, and the hardness of the nail head should be greater than 60HRC. The sole specimen is placed on the chassis of the testing machine in a position that allows the test peg to pierce through the outsole, and the test peg pierces the sole at a speed of 10 mm/min ± 3 mm/min until penetration, recording the maximum force required. 4 points on each sole (at least 1 of which are at the heel) should be tested at least 30 mm apart and more than 10 mm from the edge of the insole. There is a bottom with non-slip blocks, which should be pierced between the blocks. 2 of the 4 points should be tested at a distance of 10-15 mm from the edge line where the bottom flute is located. If humidity can affect the results, the soles should be immersed in deionized water at 20°C±2°C for 16±1h before testing.
Heel performance
The test instrument has a maximum compressive load of 6000 N and is equipped with a device for recording load/deformation characteristics. Place the sample with heel on a steel plate and place the test punch on the inside of the center of the heel section against the insole. The load is applied at a speed of 10 mm/min and 3 mm/min. The load/compression curve is plotted and the absorbed energy E is calculated, expressed in joules.
Anti-static
After the shoe sample is adjusted in a dry and wet atmosphere, a clean steel ball is filled into the human shoe and placed on a metal probe device, and the resistance between the first two probes and the third probe is measured using a specified resistance test instrument. In general, conductive shoes require that the resistance should not be greater than l00K ohms; Anti-static shoes require a resistance between 100K ohms and 100M ohms.
