FAQs
- What materials are worked with in metallurgy?
In metallurgy, metals and alloys are primarily worked with. Some of the most common include steel, aluminum, copper, iron, zinc, lead, tin, and magnesium, as well as their alloys such as bronze (copper and tin) or brass (copper and zinc). Materials such as stainless steel and aluminum are also worked with.
- Which metals are specifically worked with at Metalcraft?
Specializing in hot-dip galvanizing, we work with materials made from steel or iron. This ensures maximum corrosion protection for structures in industrial, civil, commercial, and urban construction.
- What is hot-dip galvanizing, and what are its advantages?
Hot-dip galvanizing is a process in which a metal (usually steel or iron) is immersed in a bath of molten zinc at high temperature. The advantages include:
– High resistance to corrosion: Protects the base metal from rust.
– Durability: The zinc coating is much more durable than other coating options.
– Cost-effective: Provides long-term protection at a reasonable price.
– Low maintenance: Minimal need for repairs or maintenance of the coating.
- Why is hot-dip galvanizing important for metals?
Hot-dip galvanizing is important because it protects metals from wear due to corrosion. This is crucial in environments where metals will be exposed to elements like moisture, water, or chemicals. Applying a zinc coating significantly extends the lifespan of the material.
- What type of products or applications do you manufacture?
Products made through hot-dip galvanizing include steel profiles, grids, fences, posts, metal structures, construction components, agricultural machinery, auto parts, and support structures. These applications are essential in sectors such as construction, agriculture, automotive, and energy.
- How does galvanization protect metals from corrosion?
Galvanization creates a layer of zinc that acts as a physical barrier, preventing the base metal from coming into contact with elements like water, oxygen, and other corrosive agents. Additionally, the zinc sacrifices itself in a process called cathodic corrosion, protecting the base metal from oxidizing.
- What is the lifespan of a hot-dip galvanized product?
The lifespan of a hot-dip galvanized product depends on the environment it is exposed to. In normal environments, the lifespan of a galvanized product can be 20 to 50 years. In more aggressive environments (e.g., marine areas or industrial zones with high chemical concentrations), it may be shorter but still considerably longer than that of non-galvanized products.
- What temperature can hot-dip galvanizing withstand?
The hot-dip galvanizing process occurs at temperatures between 450°C and 500°C, the temperature at which zinc melts and adheres to the base metal. Once galvanized, the coated metal can withstand higher temperatures, but this depends on the specific material.
- Does the galvanization get lost if I cut or drill the profile?
Yes, cutting or drilling a galvanized profile breaks the zinc coating in the affected areas, which can expose the base metal. However, the cut or drilled area can be repaired with a zinc coating (typically through a cold galvanizing process or epoxy paint) to restore protection.
- Difference between hot-dip and cold galvanizing:
The main difference lies in the process:
– Hot-dip galvanizing: The metal is immersed in a bath of molten zinc at high temperature, resulting in a thicker and more durable layer.
– Cold galvanizing: A liquid zinc coating is applied at room temperature, typically by spraying or painting, which results in a thinner and less durable layer compared to hot-dip galvanizing.