Core Advantages of Wanda Brand Vacuum Brick Extruder

1. Process Innovation Advantages

   • Vacuum Degassing: Completely removes air from the raw materials, eliminating elastic rebound effects during extrusion and preventing cracking.

   • High Pressure Extrusion: Extrusion pressure can reach 2.5-4.0 MPa (traditional equipment: 1.5-2.5 MPa), significantly improving the density of the green body.

2. Product Quality Improvement

   • Dimensional Accuracy: Errors can be controlled within ±1mm, reducing the amount of mortar used in masonry.

   • Surface Quality: Smoothness reaches Ra ≤ 6.3μm, enabling direct use for exposed concrete walls.

3. Significant Economic Benefits

   • Reduced Defect Rate: With an annual production of 60 million standard bricks, approximately 900,000 fewer defective bricks are produced annually, saving more than 200,000 yuan in costs.

   • Extended Mold Life: Improved material flow reduces mold wear by 30%-40%.

4. Environmental Contribution

   • Noise Reduction Design: The enclosed structure reduces noise from 90 dB(A) to below 75 dB(A).

   • Dust Control: Equipped with an automatic lubrication system, reducing the likelihood of cavity maintenance and lowering workshop dust concentrations.

Impact of Wanda Brand Vacuum Extruder on Sintered Bricks

1. Improved Physical Properties

   • Increased Density: When the vacuum degree reaches -0.08 to -0.095 MPa, the air hole rate in the green body decreases by 15%-30%, and the compressive strength after firing increases by 10%-25%.

   • Reduced Defects: Internal bubbles causing delamination and cracks are eliminated, with the finished product rate rising from 85% to over 95%.

2. Enhanced Process Adaptability

   • Raw Material Tolerance: Capable of handling high-plasticity clay or low-plasticity waste slag mixtures, with a moisture content range expanded to 18%-22%.

   • Complex Cross-Section Molding: The hole rate of hollow bricks can be increased to 40%-50%, and the hole shapes are more uniform.

3. Energy Consumption and Efficiency Changes

   • Shortened Drying Cycle: The initial moisture content of the bricks is uniform, reducing drying time by 20%-30%, thus lowering fuel consumption.

   • Increased Extrusion Power Consumption: The vacuum system adds about 15% more energy consumption, but the overall product yield improvement offsets the additional costs.

Summary

The application of the vacuum extruder marks the transformation of sintered brick production from extensive manufacturing to precision manufacturing. It not only improves product performance but also drives the industry toward environmentally friendly, pollution-free, and high-value-added development. It is especially suitable for the production of high-end products such as high-quality decorative bricks, exposed concrete wall bricks, and energy-saving bricks with high hole rates.