How to perform surface brushing treatment on perforated metal sheets

Perforated metal sheets with round holes are widely used in various aspects of daily life, and stainless steel perforated sheets play an important role in screening and filtration in industrial sectors. They possess the advantages of diverse styles and performance, making them popular with customers. While the shape of perforated metal sheets is very simple, the processing technology is quite complex. During processing, stainless steel materials require rolling, edge binding, welding, or artificial surface heating treatment, resulting in a black oxide scale.
This black oxide scale needs to be removed during the process. This hard, grayish-black oxide scale is mainly composed of NiCr2O4 and NiF, two types of E04. Previously, strong corrosion methods using hydrofluoric acid and nitric acid were commonly used for removal. However, this method is costly, pollutes the environment, is harmful to human health, and is highly corrosive, leading to its gradual phasing out in curtain walls. So, how should we process perforated metal sheets with round holes? Generally, we apply a surface brushing treatment to our products, which is divided into two types:
**Oil-brushed Round Hole Perforated Metal Mesh:** After oil brushing, round hole perforated metal mesh exhibits a perfect decorative effect, suitable for elevators, home appliances, and decorative panels. The product usually achieves an excellent effect after one brushing pass. Currently, some processing centers on the market can provide oil-based brushing for hot-rolled stainless steel, with effects comparable to cold-rolled oil brushing. Oil-based brushing is further divided into long and short filaments: long filaments are generally used for elevator decoration, while short filaments are used for kitchenware and furniture appliances.
**Dry-brushed Round Hole Perforated Metal Mesh:** Commonly available on the market are long and short filaments. After this surface treatment, the product exhibits an excellent decorative effect, meeting the needs of general decorative materials. Generally speaking, stainless steel perforated sheets can achieve a good effect after one brushing pass. Round hole perforated metal mesh products with a brushed surface not only have a more aesthetically pleasing appearance but also a longer service life.