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Defending the magnet during the rainy season

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Defending the magnet during the rainy season

Issue Time:2020-06-22
In June and July of each year, there are continuous cloudy and rainy weather phenomena in the lower-middle reaches of the Yangtze River in China, central and southern Japan, and southern South Korea. This special season is called the plum rain season. During the rainy season, the temperature is higher, and the humidity usually reaches more than 90%.

Humid air has a greater influence on the magnet production process. At high latitudes, for example, rare earth manufacturers in northern China have inherent advantages over magnet manufacturers in the south. The relatively dry environment in the north reduces the degree of oxidation of raw materials in the magnet manufacturing process to a certain extent, thereby improving the performance of the magnet. Rare earth magnets use powder metallurgy technology, most of the metal raw materials are relatively easy to oxidize metals, not only to avoid the humid environment in the manufacturing process, after the finished product is electroplated, if it is in a humid environment for a long time, it will oxidize and rust. After the magnet is rusted, it not only affects the appearance, but also has a certain impact on the functionality of the magnet, thereby affecting the customer's use. Excessive humidity not only affects the quality of metal products such as magnets, but also affects some paper packaging. When the packed carton is damp, the strength will deteriorate, reducing the ability to protect the product during transportation.

In order to cope with humid weather, especially during the rainy season, we usually put dehumidifiers in some key production sites and warehouses. The dehumidifier is turned on all day to reduce the humidity of the overall environment. It is managed through daily humidity inspections to prevent excessive humidity from affecting the production quality and the quality of the warehouse inventory. It also protects paper packaging materials such as cartons.
In addition to changing the impact of environmental factors, you can also increase protection measures. Put a dry bag in the packaging box to absorb the moisture mixed into the package. Vacuum technology is used to vacuum metal products that are prone to rust using a special plastic bag to completely isolate the air. This is a more complete moisture-proof method. Of course, if necessary, you can also put a dry bag in the vacuum bag. The effect is better.
Vacuum packaging
Dry bag