Some workers engaged in industrial production need to wear glasses to operate. These glasses are not for decoration and fashion, but to protect the eyes from harmful factors.
Protective glasses, also known as goggles, are protective equipment that protects workers' eyes from injury. So, what kind of welding goggles are good?
Welding protective glasses:
1. The surface of the welding glasses should be very smooth, free of burrs and sharp angles, and not have other defects that can cause facial discomfort;
2. The parts of the welding glasses should be relatively easy to replace, and the adjustable parts should also be very flexible;
3. Welding glasses should have very good breathability;
4. Welding glasses are mostly dark, because dark-colored lenses can better block harmful substances to the eyes, so as to protect the eyes.
1. Protective glasses against solid debris, mainly used to prevent mechanical damage to eyes caused by metal or gravel debris. The spectacle lens and spectacle frame should be strong and resistant to shock. There are edging around the frame, and there should be ventilation holes on it. The protective lens can be toughened glass, colloidal bonded glass or copper mesh protective glasses.
2. Protective glasses against chemical solutions are mainly used to prevent chemical damage to eyes caused by irritating or corrosive solutions. Ordinary flat lenses can be used, and the frame should be covered to prevent splashing of the solution. Usually used in laboratories, hospitals and other places, general medical glasses can be used universally.
3. Anti-radiation protective glasses are used to protect the eyes from excessive ultraviolet rays and other radiation. The lens is made of special glass that can reflect or absorb radiation, but can transmit certain visible light. The lenses are coated with bright chromium, nickel, mercury or silver metal films, which can reflect radiation; blue lenses absorb infrared rays, yellow-green lenses absorb both ultraviolet and infrared rays, and colorless leaded lenses absorb X-rays and gamma rays. For example, common welding glasses require relatively low transmittance of the lens, so the color of the lens is mostly ink; laser protective glasses, as the name suggests, can prevent the radiation of laser to the glasses, so the requirements on the lens are very high, such as The choice of light source, attenuation rate, light reaction time, optical density, light transmission effect, etc., different nanometer (nm) lasers need to use different wavelength lenses.