What are the factors to design cold storage heavy shelves?bathroom space saving organizer rack

　　When designing the cold storage shelves, the cold storage first needs to be distinguished. High-temperature cold storage, the product temperature needs to be controlled between 0 ° C and 4 ° C or 6 ° C. The products with more storage types are: vegetables, fruits, fresh milk, cold fresh meat, etc.; low temperature and cold libraries need to control the temperature of the product- 18 ° C or -20 ° C. The products with more storage types are: frozen meat; quick-frozen foods, such as quick-frozen dumplings, quick-frozen noodles; ice cream, etc. In actual cases, the cold storage of -18 ° C is common.

　　Compared with the normal temperature library, when the shelf is used in the cold storage, it is usually necessary to consider the design link from the following aspects

　　01. Choose the right shelf steel material

　　Low -temperature environments have specific requirements for steel applications, and they should have good low temperature toughness and ductility to avoid crispy damage. The common carbon structure steel Q235 is commonly used in shelves. There are different levels of Q235A, Q235B, Q235C, Q235D, Q235E, mainly because the impact temperature is different. A finger does not make impact, B is above 20 ° C, C is above ° C, D is above -20 ° C, E is above -40 ° C. It is different from A to E. It is the impact temperature in their respective performance. s difference.

　　Secondly, ordinary carbon structure steel A/B/C/D also represents the different content of trace elements.

　　A/B/C/D Due to the different content of the trace element, the quality level is getting higher and higher, and the performance performance in low temperature is getting better and better. -In the case, Q235D will be used as the main material of the cold storage shelves.

　　The production of fasteners usually use high nickel chromium (such as CRL8NI9) alloy steel or non -ferrous metal (such as copper, aluminum) materials in low temperature environments, and they almost do not show low temperature and brittleness. The thermal expansion coefficient of the steel material is 1.2xl0-5/℃ The thermal expansion coefficient of the concrete is about 0.7xl0-5/℃. The two are closer and can be effectively connected when the temperature difference is 40 ° C.

　　02. Select the appropriate shelf surface treatment method

　　Spraying (spraying of epoxy polyester static powder) is a common shelf surface treatment method. For the cold storage requirements of anti -corrosion and rust prevention, the applicability is very good and economical and practical.

　　Compared to spraying, the cost of hot -dip galvanized (hot -dip zinc and hot -dip galvanized) is higher, and the cost is about 40%higher. The hot -dip galvanized is a zinc -removing steel parts after rust removal. If customers have high requirements for anti -corrosion and rust prevention and are not very sensitive to costs, the hot -dip galvanized surface treatment method can be used.

　　In many cases, it can also be handled flexibly. According to the specific situation, different surface treatment methods are adopted to achieve the optimal solution. For example, the entry system, the main shelves adopt the spraying method. Good cost advantages and effects.

　　03. Other considerations

　　The design of the cold storage shelf also needs to consider other factors, such as:

　　The selection of welded strips in the cold storage need to correspond to the material and welding process requirements of welding mother material and ensure the welding quality.

　　The characteristics of frosting in the cold storage should be considered. When calculating the selection of the shelves, the weight gain should be considered appropriately, and the client's refrigeration and frosting process should be anti -corrosion requirements for structural spray coating.

　　The cold bridge with an anchor bolt at the foot of the shelf pillars (the outer wall of the house, the intercourse corner of the inner and outer wall, the connection of the building roof and the outer wall will cause the phenomenon of water mist to adsorb on the wall. At this time, the outer wall will appear The effects of dew in the wall condensed "tears", "sweating", "moldy", humid houses, and mildew) need to be considered and avoided.

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