[Abstract] Children's room anti-fouling standard children's room hidden pollution source comprehensive analysis. Therefore, we must strengthen the ventilation of children's rooms. Use natural materials or decoration materials harmless to the human body as much as possible during the renovation. Question from readers: The “source of pollution†experts in children’s rooms need to answer questions: The root causes of pollution in children’s rooms are: toxic and harmful gases such as formaldehyde and ammonia generated in indoor construction and decoration; household items such as carpets, bed blankets, etc. Easily filth, raw maggots; dust mites in plush toys, lead paint pollution on wooden toys, plastic toys, volatile substances; pets are likely to cause bacteria, fungi, viruses and other biological contamination. Therefore, we must strengthen the ventilation of children's rooms. Use natural materials or decoration materials harmless to the human body as much as possible during the renovation. Ventilation after renovation, after the odor dissipates, then moving to move in; often window ventilation, but to prevent the intrusion of outdoor pollution and cold wind damage to children's bodies; do more outdoor activities. Related Links Children's Room Environmental Indicators â— Carbon Dioxide: Less than 0.1%. Carbon dioxide is a comprehensive indirect indicator of indoor air quality. If the concentration is high, children may feel nauseous and headaches. Carbon monoxide: less than 5 mg/m3. Carbon monoxide is the most common toxic gas in indoor air and it can easily damage children's nerve cells, which is extremely harmful to children's growth. â— Temperature: Children's body temperature regulation ability is poor, summer should be controlled at 28 degrees Celsius, the indoor temperature in winter should be above 18 degrees Celsius, but should pay attention to the impact of air conditioning on children's body, the rational use. â—Relative humidity: 30% to 70% should be ensured. If the humidity is too low, children's airway damage may be easily caused. If the humidity is too high, evaporation of sweat may be unfavorable. â— Lighting: When children write, the room light should be evenly distributed without strong glare. The desktop illumination should not be less than 100 lumens. â— Noise: Noise has a great impact on children's mental activity. On the one hand, it distracts children from the other side. On the other hand, long-term exposure to noise can cause children's psychological stress. Children's room noise should be controlled below 50 decibels.
Children's room entrance decoration interior decoration room decoration window paint children's bed
Threaded Rods
1. Correct selection of teeth
1) Before use, confirm whether the mechanical properties of the product meet the customer's requirements (such as the tensile strength of the Bolt and the safe load of the nut).
2) The length of the bolt should be selected properly, with 1-2 pitch exposed after tightening.
3) Before use, the thread should be kept clean.
2. How to use dental strips correctly
1) When tightening the teeth, pay attention to that the direction of force applied by the wrench should coincide with the axis of the screw, and do not tilt.
2) In the process of tightening, the force should not exceed the safety torque, and should be uniform. Try to use the torque wrench or socket.
3) Locking too fast will lead to locking, it is recommended not to use electric or pneumatic wrench.
4) Keep the thread clean. In order to ensure the smooth fit of screw and nut, it is recommended to put the product in a clean container and do not place it at will.
3. Standard of tooth bar maintenance
1) If there is slight damage to the removed tooth, screw and nut, the die and tap shall be used for repair.
2) The removed and repaired teeth, Screws and Nuts shall be maintained by means of oil bubble or lubricating oil, and shall be placed in order according to specifications, models and purposes.
4. Scrap standard
The bolts with obvious crack, broken thread, sliding, disorderly thread, screw tensile deformation, shear trace, etc. which can not be repaired by the on-site leader can be scrapped.
5. Specification parameters of tooth strips
Texture of material:
304/316
Product standard:
DIN975
Surface treatment:
turn into a good guy
Threaded Rods,Full Thread Rod Bolt,Hexagon Socketthread Rod Bolt,Stainless Steel Thread Rod Bolt
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