European standard EN 344:1997 'special security, protection and work shoes, the European standard by CEN/TC61 & other;
Throughout the feet and legs protective equipment &;
For formulating technical committee, the secretariat by BSI.
The standard models of safety shoes design, the shoes, the vamp, shoes, shoes tongue, insole and outsole structure and the performance index for the rules.
All items specified in the standard test methods are similar to other similar standards, its method principle is generally applicable to most security antistatic footwear, major indicators as follows: 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, the most vigorously for the record.
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 sole in 20 ℃ & plusmn;
2 ℃ deionized water in 16 & plusmn;
3, electrical properties, shaping the 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 test 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 100 m ohm.
4, the standard test to the requirement of non-slip outsole the anti-slip coefficient of anti-static work shoes, but for the spur of the design, specifications and other provisions, such as the thickness of the soles, prevent slippery piece of height, and the sole on the edge of the distance are required.
5, anti-static shoe store, A place should be stored in dry and ventilated warehouse, prevent mildew, piled up off the ground, walls, 0.
More than 2 m, left all the heating element 1 m away.
To avoid oil, acid, alkali or other corrosive materials.
B, shall be counted from the date of production, and more than 18 months of products should be tested as stipulated in the standard, conform to the requirements of the rules may be sold only to use.
6, anti-static shoes use A, wearing anti-static, conductive shoes not surface wear thick woolen socks of the insulation and insulation insoles.
Use anti-static shoes sites should be anti-static floor, use conductive shoes sites should be conductive surface.
B, wearing process, generally no more than 200 h should be resistance test again.
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