How to perform impact detection on protective glasses

by:LASERRPAIR     2020-02-27
At some times I need to wear protective glasses to protect our eyes, but sometimes the eyes are broken due to impact. This situation is very dangerous, because broken eyes may cause eye damage, so it is required Protective glasses need to have some impact resistance. Goggles lens detection steps: ? Place the lens with a rubber ring on the cylinder, line a piece of white paper and carbon paper under the lens, the carbon paper is on the side of the shovel lens, and then use the pressure ring and bolts to fix the lens position. Adjust the device to the required height and make the steel ball opposite the center of the cylinder. Then, without applying any kinetic energy, a steel ball with a diameter of 22 mm and a weight of about 45 g is dropped vertically from a height of 1.3 m onto the lens to be measured. ? Detection temperature requirements: For organic eyepieces or glued eyepieces, the detection temperature is in the range of (23 ± 3) degrees Celsius; for inorganic eyepieces, it is performed at normal room temperature. ? Goggles eye protective gear detection steps: ? Put the eye protection to be tested on the head mold in the normal position used. Insert a piece of white paper and carbon paper between the head mold and the eye protection. The white paper is on the head mold and the carbon paper is on the goggles. The steel ball is placed directly above the eye protection. Within range; (b) at the nose of the frame; (C) at the two hinges of the frame. ? Testing temperature requirements: ? (1) Put the eye protector in a (55 ± 2) ° C incubator for 1 hour before testing; ? (2) Before the second test, cool the eye protector to (-5 ± 2) ° C and keep it for 1 hour; for eye protector used for low temperature operation, it should be cooled to (-20 ± 2) ° C, And kept warm for 4h. ? The test shall be carried out within 30s after the completion of the insulation. ? The steps of the goggles anti-shock performance test are as above. If you want to test the performance of your goggles, remember to go to a professional institution with relevant qualifications.
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