Because of the extreme weather events that are often too hot, too dry or excessively rainy or wet in the summer. Therefore, it has never been considered a good season for home improvement. In fact, in the summer construction, it is only necessary to pay attention to some important issues and to avoid quality problems.
Top Ten Mistakes in Decoration Knowledge
1. As long as you feel no smell, there will be no pollution in the indoor environment;
2. As long as there is pollution in the interior of the decoration, indoor pollution cannot be prevented;
3. As long as the materials used in the renovation are in line with national standards, there must be no pollution in the room.
4. As long as it is a high-cost decoration material, it will not cause indoor environmental pollution;
5. Only pay attention to the pollution caused by the decoration and neglect the indoor environmental pollution caused by furniture;
6. Only knowing that ventilation is conducive to purifying the environment does not know how to properly ventilate. Seriously contaminated room ventilation cannot eradicate pollution.
7. Only know that the air purifier and purifier can purify indoor air, but do not know how to use it rationally;
8. As long as you choose a formal decoration company for renovation, there will be no pollution;
9. Only pay attention to the pollution caused by interior decoration, and do not attach importance to other aspects of pollution;
10. Only know that the indoor environment should be detected, but do not know how to choose the detection unit, and even select product sales staff for indoor environmental testing.
Summer decoration knowledge entrance decoration restaurant decoration decoration interior decoration home decoration furniture air purifier
Hard Ferrite Magnets are manufactured from iron oxide and either barium carbonate or strontium carbonate. The raw materials are mixed in the correct proportions, granulated, and calcined (presintered). After going through several intermediate phases, a hexaferrite phase (BaFe12O19 or SrFe12O19) is achieved. The presintered granulate is ground to a powder. It can then be pressed wet or dry in a magnetic field (anisotropic) or in the absence of a magnetic field (isotropic) and sintered. Hard ferrites are ceramic materials, with the mechanical hardness and brittleness typical of ceramics. A typical way of processing them is by grinding with diamond discs.
Hard Ferrite magnets have excellent corrosion resistance and have normal operating capabilities between -40°C and +250°C. As temperature increases, remanence decreases by 0.2%/°C whereas coercivity increases by 0.3%/°C. At very low temperatures there is a risk of permanent demagnetization in magnet systems with low working points.
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