1. Select the suitable rack steel material
The low temperature environment has specific requirements for the application of steel products, and should have good low temperature toughness and ductility, so as to avoid brittle failure. Common carbon structure steel Q235 commonly used in the rack, Q235A, Q235B, Q235C, Q235D, Q235E in different grades, mainly because the impact temperature varies. A means no impact. B is above 20 C, C is above 0 C, D is above -20 C, E is above -40 C, A to E, and the difference of impact temperature in their respective properties.
Secondly, the common carbon structure steel A/B/C/D also represents the different content of traces elements. Because of the different content of trace elements, the quality grade of A/B/C/D is getting higher and higher, and the performance of the low temperature is getting better and better. Generally speaking, Q235D will be used as the main material of cold storage rack. The manufacture of fasteners is usually made of high nickel chromium (such as Cr18Ni9 type) alloy steel or nonferrous metal (such as copper and aluminum) in low temperature environment, which almost do not show low temperature brittleness. The thermal expansion coefficient of steel material is 1.2 x 10 5/ C, and the thermal expansion coefficient of concrete is about 0.7 x 10 5/ C, which is close to each other, and can be effectively connected when the temperature difference is within 40 degrees C.
2. Select the appropriate rack system
Cold storage can be described as “inch inch gold” to describe, choose the right rack system, for customers to use each cubic meter, to reach the maximum warehouse utilization rate, is the rack supply enterprises need to focus on factors. The following are several common types of cold storage racks:
The combination of storehouse and frame: the combination of warehouse and rack is an ideal high position storage system, which directly stores the roof and side walls of the warehouse on the rack, and eliminates the construction of the warehouse. The utilization rate of warehouse is the highest and the long-term investment return rate is the highest. At the same time, the technical requirements for the racks are also high.
The common shuttle rack system, the entry type rack system and other rack types, such as the double depth pallet rack, the rear push rack system and the gravity type rack system, are selected mainly according to the different requirements of the customers. In general, there is no best, only the best.
3. Choose the proper way of surface treatment
Spraying (epoxy polyester electrostatic powder spraying) is the most common rack surface treatment. It is not very harsh for cold storage, which is very suitable for corrosion and rust prevention. It has good applicability and economy.
4. Other considerations
保冷ラックの設計では、その他の要因も考慮する必要がある。例えば、保冷庫内の溶接部の選定は、被溶接材の材料および溶接工程の要件に対応し、溶接部の溶接品質を確保する必要がある。保冷庫内の霜の特性を考慮すべきである。ラックの選定を計算する際、重量増加を適切に考慮すべきであり、顧客の冷蔵・除霜工程が構造溶射に要求する耐食性を考慮すべきである。
The cold bridge of the anchor bolt at the pillar foot of the rack column (the corner of the outer wall, the angle of the inner and outer walls, the roof of the building and the outside of the outer wall) will produce the phenomenon that the water mist is adsorbed on the wall, and the effect of dew condensation in the wall of the wall, “tears”, “perspiring”, “moldy”, the damp and mildew of the house, will appear. Worry and avoid.
For each project, whether the above factors are considered or considered economically and reasonably, we need to make specific analysis based on specific circumstances. Combining with engineering practice, Hercules understands and responds to the actual needs of customers, and creates economic benefits wholeheartedly for customers, which is the fundamental purpose of engineering design.
Compared with the spray, hot dip galvanized (hot dip galvanized and hot dip galvanized) high cost, high cost around 40%. Hot dip galvanizing is to immerse steel after derusting into molten zinc at 500 degrees or so, so that the surface of steel members can be attached to zinc layer, so as to achieve the purpose of anticorrosion. If customers have high requirements for corrosion and rust protection and are not very sensitive to cost, hot galvanized surface treatment can be adopted.
多くの場合、柔軟に対応できる。特定の条件に応じて、異なる表面処理方法を採用し、最適なソリューションを実現します。例えば、エントリーシステム、メインラックに溶射を施し、グランドガイドに溶融亜鉛メッキを施すことで、最高のコストメリットと使用効果を得ることができます。
Jrackingは、様々なパレットラック、カンチレバーラック、電動モバイルラック収納システム、メザニンとプラットフォーム、シャトルカー自動収納システム、プッシュバックラック、ロングスパン棚、リベット棚、ドライブインラック、カートンフローラック、スタッキングラックおよびその他の関連するストレージ機器の生産を専門としています。
Jrackingは、ISO9001、FEM10.2.02、SEMA、AS4084-1993規格をすべての業務に厳格に導入しています。Jrackingは、お客様のオーダーフルフィルメントとマテリアルハンドリングのニーズをすべて満たすために、幅広い製品を提供しています：ティアドロップパレットラック、デキシオンパレットラック、ヨーロッパパレットラック、その他の作業器具。倉庫全体への設置をお考えであろうと、1つの機器をお探しであろうと、Jrackingはお客様のためのソリューションをご用意しています。
