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What causes the rust and peeling of storage shelves?

What causes the rust and peeling of storage shelves?

With the rapid development of modern enterprises, the majority of enterprises have higher and higher requirements for storage shelves and more and more widely used. Enterprises pay more and more attention to the maintenance of storage shelves. How to do a good job in the maintenance of storage shelves has also become one of the concerns of many customers.
Xiaobian often receives inquiries from some customers and asks: why do some manufacturers’ shelves rust and peel off? What causes these problems?
Let’s follow Xiaobian and have a look
1. Steel quality problems
The general steel cost accounts for a large part of the shelf sales price. Therefore, in order to make the shelf look more “cheap”, some shelf manufacturers reduce the total cost of shelf projects by reducing the amount of steel used on the shelf.
On the other hand, some cheap and low-quality small rolling mills are used to produce shelves.
However, small rolling manufacturers lack equipment and need to heat a roll of material for many times. In the process of multiple heating, the temperature of steel is difficult to be well controlled, and the mechanical properties of different parts of the material will be different. At the same time, Fe-C crystal will produce diversity and instability, poor surface compactness and weak corrosion resistance.
2. Spraying process of shelf
The spraying process of storage shelves often needs to go through the following steps: derusting, degreasing, phosphating, water cleaning, drying, electrostatic powder spraying, hot melting, curing, etc.
These steps have strict requirements on the treatment time control of each process, the concentration of phosphating solution, water temperature and the temperature of drying room. Each step needs to be strictly controlled. If the equipment is not advanced enough is an objective problem, then subjectively destroy the normal process. The purpose is to reduce the number of processes Shorten the processing time to reduce the shelf cost.
However, the shelves made in this way can not guarantee the product quality. Taking phosphating as an example, by reducing this process, powder spraying can still be completed, and it is difficult to see the problem in a short time. However, rust and peeling will occur after a long time of use.