Galvanized sheet refers to coating a layer of zinc on the surface of ordinary steel sheets to achieve anti-corrosion and anti-rust effects.
The thickness of galvanized sheet is one of the important factors affecting its service life and performance.
1. Definition of galvanized sheet thickness
The thickness of galvanized sheet refers to the thickness of the zinc layer on the surface of the steel sheet, and the commonly used unit is "μm" (micron).
The standard stipulates the thickness of galvanized sheets, which are generally divided into three categories: the thickness of the zinc layer for general purposes is about 20 μm; the thickness of the zinc layer for construction purposes is about 45 μm; and the thickness of the zinc layer for heavy industrial purposes is above μm.
According to different application fields and usage environments, galvanized sheets of different thicknesses can be selected.
2. Factors affecting the thickness of galvanized sheets
1. Galvanized
The thickness of galvanized sheet has a great relationship with galvanizing.
Generally speaking, the thickness of the zinc layer of galvanized sheets using hot-dip galvanizing is larger, which can reach more than μm; while the thickness of the zinc layer of galvanized sheets using electro-galvanizing is smaller, generally around 20 μm.
Therefore, when choosing galvanized sheets, you need to consider aspects such as actual use requirements and cost-effectiveness.
2. Steel plate quality
The quality of the steel sheet will also affect the thickness of the galvanized sheet.
The steel plate has a high surface finish and can better combine with the zinc layer to form a uniform and stable galvanized layer.
The surface of poor-quality steel plates is rough and prone to problems such as hollowing and peeling, which affects the quality and thickness of the galvanized layer.
3. Zinc content in galvanizing solution
The zinc content in the galvanizing bath also affects the thickness of the galvanized sheet.
In galvanizing baths with high zinc content, the zinc layer on the surface of the steel plate will be thicker, but excessive zinc content will also cause the zinc layer to be too thick, affecting the service life and performance of the galvanized plate.
3. Application fields of galvanized sheet thickness
Galvanized sheets are widely used in construction, machinery, automobiles, electrical appliances and other fields.
Among them, in the construction field, galvanized sheets are mainly used in roofs, walls, rainwater systems and other parts to play an anti-corrosion and anti-rust role.
In fields such as machinery and automobiles, galvanized sheets are mainly used to manufacture parts and casings, and have good wear resistance, corrosion resistance, rust prevention and other properties.
In short, the thickness of galvanized sheet is one of the important factors affecting its service life and performance.
Choosing the appropriate galvanized sheet thickness can better improve its use effect and economic benefits.
