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Xiao Yu, an assistant professor of dermatology at the Second Xiangya Hospital of Central South University, said that the probability of the onset of facial diseases such as erythema and hyperpigmentation is much higher than that of the office worker who runs the computer every day. This is due to the static electricity generated by the computer screen. A lot of suspended dust, causing facial irritation.
How to prevent these static electricity?
1, try not to put or put less household appliances in the bedroom. In this way, it is possible to prevent the human body and the electric appliance from generating an electric field at a short distance and to touch the static electricity. It is better to watch television at a distance of 2 to 3 meters from the television.
2, use the "third party" to eliminate static electricity. In order to avoid static electricity hits, small metal devices (such as keys), cotton rags, etc. can be used to eliminate static electricity by first touching the doors, door handles, faucets, backs, and bed rails that can cause static electricity.
3, with natural fabrics. Use natural fabrics such as cotton, hemp, and silk as far as possible for underwear, sheets, quilts, etc. Try not to wear or wear home textile articles and clothing of chemical fiber texture.
4, with a wooden comb, hair moisturizer. Hair combs are used on the hair and conditioners are used when shampooing to eliminate static electricity.
5, maintain the indoor temperature. Static electricity is not easy to produce. It is best to use a humidifier in the winter season. Flowers and grass can also be placed to avoid static electricity.
6, anti-static floor, walls, ceilings, etc. use space-proof electrostatic materials.
Used for processing flat surfaces on horizontal milling machines. Cutter teeth are distributed on the circumference of the milling cutter, and are divided into straight teeth and spiral teeth according to tooth shape. According to the number of teeth and coarse teeth and two kinds of fine teeth. The helical tooth rough tooth milling cutter has fewer teeth, high tooth strength and large chip space, which is suitable for rough machining. Fine-tooth milling cutters are suitable for finishing.
2. face milling cutter
Also known as disc milling cutter, used for vertical milling machine, end milling machine or gantry milling machine processing plane, end face and circumference have cutter teeth, also have coarse teeth and fine teeth. The structure has three kinds: integral type, insert type and transferable type.
3. End milling cutter
Used for processing grooves and step surface, knife teeth in the circumference and end face, can not work along the axial feed. When the end mill has end teeth through the center, axial feed can be provided.
4. Three-side edge milling cutter
Used for processing all kinds of grooves and steps, its two sides and circumference are provided with cutter teeth.
5. Angle milling cutter
For milling grooves at a certain Angle, there are two kinds of single Angle and double Angle milling cutters.
6.Saw Blade milling cutter
Used for machining deep grooves and cutting off workpieces, there are more cutter teeth on the circumference. In order to reduce the friction during milling, there are 15 '~1° auxiliary Angle on both sides of the cutter teeth. In addition, there are keyway milling cutters, dovetail slot milling cutters, T - shaped slot milling cutters and various forms of milling cutters.
How to avoid the impact of static electricity on the human body?
Starlight anti-static flooring experts warned that static electricity has a negative impact on human health. There have been medical experts who have confirmed that skin electrostatic disturbance can change the normal potential difference of the human body surface and affect the normal electrophysiological process of the myocardium. This kind of static electricity can make the patient aggravate the condition. The long-lasting static electricity will also increase the blood alkalinity, cause skin itching and pigmentation, affect the body's physiological balance, and interfere with people's emotions.