2b Kemasan Lembaran Logam
2B sheet metal finish is a standard cold rolled stainless steel surface produced through annealing, penjerukan, dan rolling pas kulit ringan. The name “2B” originates from traditional stainless steel finishing classifications, where “2” refers to cold rolling and “B” refers to the bright skin-pass process.
- Penerangan
2B finish is one of the most widely used surface finishes for stainless steel sheet metal. It is commonly applied to cold rolled stainless steel sheets and coils used in industrial equipment, peralatan dapur, construction materials, tangki kimia, dan fabrikasi ketepatan.
The 2B surface is known for its smooth appearance, moderate reflectivity, kerataan yang baik, and excellent processing performance. Because of its balanced surface quality and cost efficiency, it has become the standard industrial finish for stainless steel sheets worldwide.
1. What Is 2B Finish?
2B finish is a cold rolled stainless steel surface produced through:
- Bergolek sejuk
- Rawatan haba (penyepuhlindapan)
- Penjerukan
- Final light skin-pass rolling
Proses ini mencipta:
- A smooth and uniform matte surface
- Good dimensional accuracy
- Sifat mekanikal yang stabil
- Suitable surface condition for further processing
Compared with rough hot rolled surfaces, 2B finish provides much better flatness and surface consistency.
2. Origin of the Name “2B”
The name “2B” comes from historical stainless steel rolling and finishing classification systems developed in the steel industry.
Meaning of “2”
The number “2” refers to:
- Cold rolled stainless steel processing
In stainless steel surface standards:
- No.1 finish → Hot rolled surface
- 2-series finishes → Cold rolled surfaces
Meaning of “B”
The letter “B” refers to:
- Bright finish obtained through final skin-pass rolling
This final light rolling process improves:
- Kelancaran permukaan
- Kerataan
- Reflektif
- Dimensional consistency
Oleh itu, “2B” essentially means:
Digulung sejuk, heat treated, jeruk, and lightly bright rolled stainless steel surface.
3. Manufacturing Process of 2B Finish
The typical production steps include:
| Process Step | Fungsi |
|---|---|
| Berguling Sejuk | Reduces thickness and improves surface quality |
| Penyepuhlindapan | Restores ductility and removes stress |
| Penjerukan | Removes oxide scale |
| Pas Kulit Bergolek | Improves smoothness and brightness |
The final result is a smooth industrial stainless steel surface suitable for fabrication and further polishing.
4. Ciri-ciri Permukaan Kemasan 2B
| Harta benda | Ciri-ciri |
|---|---|
| Rupa Permukaan | Smooth matte gray |
| Reflektif | Sederhana |
| Kerataan | Cemerlang |
| Kekasaran Permukaan | rendah |
| Processing Performance | sangat bagus |
| Industrial Use | Extremely common |
2B finish is smoother than No.1 finish but less reflective than BA or mirror finishes.
5. Comparison with Other Stainless Steel Finishes
| Selesai | Rupa Permukaan | Aplikasi Utama |
|---|---|---|
| No.1 | Rough hot rolled | Heavy industrial plates |
| 2B | Matte licin | Kegunaan industri am |
| BA | Reflektif terang | Aplikasi hiasan |
| No.4 | Brushed satin | Architecture and appliances |
| Cermin 8K | Sangat reflektif | Panel hiasan |
6. Advantages of 2B Stainless Steel Finish
Prestasi Fabrikasi Cemerlang
Sesuai untuk:
- Pemotongan laser
- Kimpalan
- lenturan CNC
- Mengecap
- Lukisan dalam
Stable Surface Quality
The surface is uniform and consistent for industrial processing.
Ketahanan Kakisan yang Baik
The smooth surface helps maintain the stainless steel passive layer.
Cost Efficiency
2B finish is one of the most economical stainless steel surface finishes for industrial applications.
7. Common Applications of 2B Finish Stainless Steel
2B finish stainless steel sheets are widely used in:
- Peralatan pemprosesan makanan
- Tangki kimia
- Jentera perindustrian
- Peralatan dapur
- Stainless steel tubing
- Bahan binaan
- Precision sheet metal fabrication
