Can Sheet Hot-Dip Galvanizing Process

Product name:	Can Sheet Hot-Dip Galvanizing Process
Keywords:	Can Sheet Hot-Dip Galvanizing Process
Industry:	Petroleum, natural gas and chemical industry - Petroleum and natural gas industry
Process:	Sheet metal - Bending
Material:	Carbon steel

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Product details

Key parameters of the can sheet hot-dip galvanizing process:
A molten zinc bath (Zn-0.2%Al) at 460°C is used, with an immersion time of 90-120 seconds, forming an 80-120μm coating. Pre-treatment requires three stages: degreasing (pH=12), pickling (15% HCl), and fluxing (NH₄Cl/ZnCl₂), ensuring a substrate surface tension ≤35mN/m.

Key quality control points:
The post-galvanizing water cooling rate must be >15°C/s to avoid the formation of the brittle ζ phase layer. Salt spray testing is performed according to GB/T 10125-2021, requiring 720h without red rust, and the adhesion cross-cut test must meet the ISO 2409 Class 0 standard.

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