Do You Know the Production Process of Fire-Resistant Cable Trays?

2025-11-24 01:32:40

Fire-resistant cable trays offer fire resistance, oil resistance, corrosion resistance, non-toxicity, and pollution-free performance. They feature convenient overall installation, a reasonable structure, a long service life, and an aesthetic appearance. Cables installed in fire-resistant cable troughs benefit from a clean environment and easy maintenance. The fireproof coating also has the characteristics of a thin film, high fire resistance, and strong adhesion.

Fire-resistant cable trays are mainly composed of fireproof base materials such as fireproof panels (made of glass fiber-reinforced materials and inorganic adhesives) and metal skeletons. A fireproof coating is added to the outer layer to provide fire retardancy, preventing the tray from burning when exposed to fire and thus blocking the spread of flames—achieving excellent fire resistance effects.

Do You Know the Production Process of Fire-Resistant Cable Trays?

1. Production of Steel Skeleton

High-quality cold-rolled steel sheets are used as the raw material, processed into shape through mechanical manufacturing.

Features: High load-bearing capacity and long service life.

Quality requirements:

The cross-section is neat with no burrs or sharp corners.

The inner trough is smooth and flat without sharp protrusions.

After processing and forming, the cross-sectional shape is uniform, free from defects such as bending, twisting, cracks, or irregular edges.

2. Production of Fireproof Panels

Main raw materials: Siliceous materials and calcareous materials.

Auxiliary materials: Fiber materials, lightweight aggregates, adhesives, and chemical additives (mixed in a specific ratio).

Manufacturing process: Produced through advanced autoclaving technology.

3. Preparation of Fireproof Coating

A high-efficiency steel structure protection product.

Key components: Selected polymer synthetic resins as film-forming substances, combined with flame retardants, foaming agents, carbonizing agents, and high-temperature refractory materials.

Working principle: Under high-temperature conditions, the coating undergoes continuous foaming and expansion to form a flexible sponge-like carbonized thermal insulation layer. This prevents the load-bearing steel structure from rapidly softening, deforming, or losing strength due to high-temperature flames.

4. Coating Application Requirements

The outer fireproof coating layer must be evenly sprayed, smooth, and free from obvious color differences.

The inner layer is either lined with fireproof panels or sprayed with fireproof coating, ensuring reliable fixation between the fireproof panels and the cable tray.