Our Precision MGO Board Manufacturing Process

At QDFPM LIMITED, we don't just make Magnesium Oxide (MGO) boards; we engineer superior building solutions. Our state-of-the-art manufacturing process combines raw material excellence with precise German technology and rigorous quality control at every stage. This ensures every panel we produce delivers unmatched performance in fire resistance, structural integrity, and environmental sustainability.

Step 1: Sourcing & Quality Assurance of Raw Materials

• The journey to a premium MGO board begins with the selection of the finest raw materials.

• Magnesium Oxide (MGO): We source high-purity Magnesium Oxide, the primary bonding agent, from certified suppliers. Its quality is critical for the board's strength and stability.

• Magnesium Sulfate (MgSO4): We use refined Magnesium Sulfate solution as the catalytic binder, ensuring a complete and stable chemical reaction.

• Reinforcement Fibers: A blend of selected organic and inorganic fibers (such as glass fiber mesh) is integrated to provide exceptional tensile strength, impact resistance, and flexibility, preventing cracks and breakage.

• Fillers & Additives: Proprietary mineral fillers and functional additives are meticulously measured to enhance properties like water resistance, mold inhibition, and workability.

Our Commitment: Every incoming raw material batch undergoes stringent laboratory testing to verify chemical composition and physical properties, guaranteeing consistency from the very start.

Step 2: Precise Batching and Automated Mixing

Consistency is key. Our automated batching system precisely weighs each component according to our proprietary formula. The raw materials are then fed into a high-shear mixing chamber. This closed, computerized system ensures a perfectly homogeneous slurry with the exact viscosity and density required for a uniform board structure, eliminating human error and material waste.

Step 3: Continuous Forming and Pre-Pressing

The homogeneous slurry is evenly spread onto a moving conveyor belt. A continuous layer of reinforced fiberglass mesh is embedded into the core of the slurry, creating a strong "skeleton" for the panel. The mat then passes through a pre-pressing station, which removes air bubbles and compacts the material to a specific thickness, setting the stage for the main press.

Step 4: High-Pressure Compression & Curing

The pre-formed mat is cut to size and transferred to a multi-daylight hydraulic press. Here, it undergoes high-pressure compression at controlled temperatures. This critical stage:

• Densifies the board, achieving its final thickness and superior structural density.

• Activates the chemical reaction between MgO and MgSO4, forming the strong magnesium oxychloride cementitious matrix that gives MGO boards their renowned properties.

Step 5: Controlled Curing and Drying

Unlike some manufacturers, we understand that proper curing is not optional. The freshly pressed panels are moved to a climate-controlled curing chamber for a specific period. This allows the chemical reaction to complete fully, ensuring ultimate board stability and preventing the risk of "halogen bleeding" or warping later in its life. After curing, panels enter a multi-stage drying tunnel to gently and evenly reduce moisture content to optimal levels.

Step 6: Precision Cutting, Sanding, and Finishing

Once cured and dried, the large panels are precision-cut to standard or custom sizes (e.g., 1220x2440mm, 1200x2400mm) using automated saws with diamond-tipped blades for clean, smooth edges. For specific applications, panels can pass through calibrated sanding machines to achieve a perfectly smooth and uniform surface ready for any finish, from paint to veneer.

Step 7: Rigorous Final Quality Control (QC)

Every single batch of panels is subjected to our multi-point inspection protocol before approval for shipment. Our QC team tests for:

• Dimensional Accuracy: Thickness, width, and length.

• Surface Quality: Checking for scratches, imperfections, or inconsistencies.

• Physical Properties: Sample testing for flexural strength, modulus of elasticity, and nail pull resistance.

• Fire Performance: Regular samples are sent to independent laboratories to certify compliance with international standards (ASTM E84 Class A, EN 13501-1 Euroclass A1).

Step 8: Packaging and Palletizing

Approved panels are carefully stacked, separated with protective corners, and wrapped in clear, weather-resistant packaging. They are then secured on sturdy wooden pallets for safe transportation across the globe. Each package is clearly labeled with batch numbers, size, and thickness for full traceability.

Please refer to the following production flow chart.