Стоимость облицовки кортеном за м2
The rust on Corten steel cladding does not continuously fall off. While there may be some loose rust during the early oxidation stage, it eventually forms a стабильный, tightly bonded patina. This is the key feature that gives Corten steel its long-lasting durability and low maintenance, making it a reliable choice for exterior cladding applications.
- Описание
При оценке Corten steel cladding, one common concern is whether the rust layer will fall off or stain surrounding areas. The answer depends on the stage of oxidation and environmental conditions.
Does Corten Steel Rust Fall Off?
Short Answer
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Early stage: Да, some loose rust may appear and can wash off
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Stable stage: Нет, the rust layer becomes dense and firmly bonded, и не отслаивается
Why Rust Behavior Changes
1. Early Oxidation Stage
When Corten steel is newly installed:
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The rust layer is loose and porous
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Rainwater may carry rust particles, causing runoff stains
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Surface color is bright orange and uneven
This stage is temporary and part of the natural weathering process.
2. Patina Formation Stage
As exposure continues:
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Легирующие элементы, такие как Cu, Кр, и Ни modify the rust structure
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The oxide layer becomes компактный и крепкий
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The surface transitions to reddish-brown
At this point, the rust layer acts as a protective barrier.
3. Stable Stage
After full weathering:
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Rust is firmly attached to the steel surface
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No flaking or peeling like ordinary carbon steel
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Minimal or no runoff under normal conditions
Comparison with Ordinary Steel
| Аспект | Кортен Сталь | Ordinary Steel |
|---|---|---|
| Rust structure | Dense and stable | Loose and flaky |
| Адгезия | Сильный | Слабый |
| Flaking | Minimal after stabilization | Continuous |
| Защита | Self-protecting | Corrosion continues |
Factors That Affect Rust Stability
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Environment: Alternating wet and dry conditions help form a stable patina
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Water drainage: Poor drainage may prolong the loose rust stage
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Подготовка поверхности: Pre-weathered steel reduces runoff issues
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Installation design: Avoid constant water accumulation
Practical Considerations
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Initial runoff may occur in the first weeks to months
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Pre-rusted (предварительно выдержанный) Corten steel can minimize staining
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Proper design (drip edges, spacing) helps control water flow
