General labor insurance shoes which is the three big effect has three functions, the following together and see it!
1, baotou, shock resistance with the provisions of the weight of steel impact hammer impact test, baotou baotou when the clearance height should be less than specified value, and the axis of the baotou in the test should not be any penetrating crack.
It is worth noting that the national standard of the weight of shock hammer, specifications, impact height and the regulation of the structure of the testing machine and so on are different, should distinguish between actual test.
2, puncture resistance testing machine is equipped with a pressure plate, pressure plate is equipped with nail test, in test nails for a cut to the head of the cutting-edge, nail head hardness should be greater than 60 HRC.
Put sole sample machine chassis, position can make the nail pierced through the outsole test, the test pin to 10 mm/min & plusmn;
3 mm/min speed puncture the soles
, until penetration, record the strongly required.
Four points for each soles choice test (
At least one point in the heel)
, various points not less than 30 mm apart, and from the inner bottom edge distance is greater than 10 mm.
Has non-slip bottom, should be pierced between blocks.
Four points of the two points should be from the planting base stare blankly in 10 - edge line
15 mm distance test.
If the humidity will affect the results, the test should be before the soles in 20 ℃ & plusmn;
2 ℃ deionized water in 16 & plusmn;
3, the electrical properties of conductive shoes and anti-static shoe by adjusted in the dry and wet air, the clean steel ball filled people inside the shoe and into the metal probe device, using the specified resistance testing instrument, measuring the front two resistance between the probe and third probe.
In general, the conductive shoes requirement should not be greater than l00K ohm resistance;
Anti-static shoes for resistance should be between 100 k ohms to 1000 m ohm.
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