How does the manufacturing process differ for cast iron vs. aluminum outdoor armchairs?

The manufacturing processes for cast iron and aluminum outdoor armchairs differ significantly due to the distinct properties of each material.

Cast Iron Armchairs:

1. Casting Process: Molten iron is poured into molds, often made of sand, to create intricate designs.

2. Cooling & Finishing: After cooling, the rough castings are cleaned, polished, and coated with protective finishes to prevent rust.

3. Weight & Durability: Cast iron chairs are heavier and more durable but require regular maintenance to avoid corrosion.

Aluminum Armchairs:

1. Extrusion or Casting: Aluminum can be extruded into hollow profiles or die-cast for detailed designs.

2. Welding & Assembly: Pieces are welded or bolted together, allowing for lightweight and modular designs.

3. Powder Coating: A durable powder coat is applied for weather resistance without the need for frequent upkeep.

Key Differences:

- Weight: Cast iron is heavier; aluminum is lightweight and portable.

- Maintenance: Aluminum requires less maintenance than cast iron.

- Design Flexibility: Aluminum allows for sleeker, modern designs, while cast iron offers classic, ornate styles.

Choosing between the two depends on your priorities: durability and tradition (cast iron) or convenience and modernity (aluminum).