What is the installation process for aluminum panels?

The installation of aluminum panels is indeed a technical task, with the core method being the dry-hanging technique. This method secures the panels to the wall using a frame and hangers, ensuring both stability and aesthetic appeal. The entire process can be broken down into these key steps:

I. Construction Preparation

Materials and Inspection:

Aluminum Panels: Must meet design specifications (thickness ≥2mm). Fluorocarbon coating should be uniform and free of scratches.
Rafters and Connectors: Primary rafters (e.g., 50mm×50mm×3mm hot-dip galvanized steel square tubing) and secondary rafters require anti-corrosion treatment. Metal accessories like angle brackets and bolts must have quality certification documents.
Sealants: Neutral silicone weatherproof sealant must provide compatibility test reports; foam rod density must meet standards.
Embedded Parts: Position, dimensions, and corrosion protection must comply with design requirements; pull-out tests must be conducted when necessary.

Surveying and Layout:

Based on the curtain wall division drawings and civil engineering elevation, precisely mark column division lines and reference lines on the main structure using tools such as theodolites and laser levels. Regularly recheck to ensure verticality.
II. Installation Process

Installation of Vertical Frames (Columns):

Connect columns to embedded parts via angle brackets. Adjust elevation, front-to-back, and left-to-right deviations to meet specifications (e.g., adjacent column elevation deviation ≤3mm), then weld for fixation.
Welds must be full-penetration with no slag inclusions or porosity, and rustproofing must be applied.

Installation of Horizontal Rails (Beams):

Connect beams to columns, strictly controlling horizontal level (tolerance ±1mm) to ensure straight horizontal joints after panel installation.

Installation of Aluminum Panels:

Sequence: Typically install layer by layer from bottom to top and left to right.
Method:
Follow node design specifications using exposed framing (clamp fastening) or concealed framing (corner code insertion) to ensure panel flatness and uniform joints.
Protection:
Cover and protect susceptible areas from contamination post-installation.
Sealing Treatment:
Thoroughly clean gaps between panels (typically 10-20mm). Insert foam rods, then seal with weather-resistant sealant. Ensure joints are fully filled, smooth, and uniformly wide.
III. Key Process Points
Node Treatment:
Trim details, expansion joints, and other critical areas must strictly follow design drawings to ensure structural safety and aesthetic integrity.
Quality Control:
Conduct real-time inspections during installation for verticality, flatness, and levelness. Allowable deviations must comply with specifications (e.g., curtain wall verticality: ≤10mm for heights ≤30m).
Safety and Protection: Wear safety harnesses for elevated work; implement fire prevention measures in welding zones; handle materials with care during transportation.
IV. Installation Methods

Based on application scenarios and aesthetic requirements, primary methods include:

Dry-Hanging (Gap-Leaving): Leaves gaps (10-20mm) between panels filled with sealant, suitable for curtain walls to accommodate thermal expansion and contraction.
Tight-fit Installation: Panels are tightly joined with only natural seams, primarily used indoors and requiring extremely high installation precision.

In summary, aluminum panel installation is a systematic process. From measurement and frame installation to panel fixation and sealing, each step demands meticulous execution to ensure both structural integrity and aesthetic appeal.