Comparison And Analysis Of The Pressing Process Of Terrazzo Prefabricated Large Slabs: Square Material Pressing Vs Sheet Metal Pressing

The core differences and comparative analysis between square material pressing and sheet pressing in the process of terrazzo prefabricated large board pressing are as follows:

1, Compression method and mold design
Square material pressing
Mold type: Using a large capacity cubic mold, the raw materials are mixed and pressed into a solid square material (similar to natural stone waste).
Cutting method: The square material needs to be cut into boards according to the requirements by a large cutting machine, with high thickness freedom (customizable ultra thick boards).
Aggregate selection: Larger particle aggregates (such as 3-8cm) can be added to achieve a super large pattern effect, suitable for special texture requirements.
Plate pressing
Mold type: Use a single sheet mold (specification plate or large plate mold) to directly press into the required size of the plate.
Thickness limitation: The thickness is fixed (usually 12-40mm), and due to mold limitations, it is not possible to achieve ultra thick customization.
Aggregate selection: Due to the small amount of raw materials used for single piece pressing, the aggregate particles are smaller and the pattern uniformity is higher.

2, Physical performance and quality stability
Square material pressing
Uneven density: The large volume of the square material makes it easy for the raw materials to be mixed insufficiently, resulting in uneven color density and performance.
Surface and center differences: During compression, the surface and center are compressed differently, resulting in inconsistent density and difficulty in unifying the quality of the finished product.
Specification limitation: The size of the single pressed sheet is relatively small (generally ≤ 2400 × 1200mm), and its physical properties are slightly inferior to sheet pressing.
Plate pressing
High uniformity: The amount of raw materials used for single piece pressing is small, resulting in more uniform mixing and stable physical properties (such as higher bending strength and compression strength).
Flexible specifications: capable of producing oversized sheets (such as 1620 × 3250mm) to meet the needs of large-area paving.
Process optimization: Adopting vacuum, high-frequency vibration, and high-pressure synchronous processes, the product has high density and significantly improved strength.
3, Production efficiency and cost
Square material pressing
Low efficiency: It is necessary to first press the square material and then cut it into boards, which is a cumbersome process and has a long production cycle.
Cost advantage: Low mold cost, suitable for mass production of standard specification boards, with lower unit cost.
Plate pressing
High efficiency: directly pressed into sheet metal, reducing cutting processes, high degree of automation, and fast production speed.
High cost: high precision requirements for molds, large equipment investment, suitable for high-end customization or small batch multi specification production.

4, Application scenarios and applicability
Square material pressing
Applicable scenarios: Projects that require ultra large particle patterns and ultra thick panels (such as curved facades and special shaped walls).
Restrictions: Projects that require high quality uniformity, such as high-end commercial spaces, should be carefully selected.
Plate pressing
Applicable scenarios: Projects that pursue high intensity, high density, and uniform color (such as hospitals, laboratories, airports, etc.).
Advantages: Can develop functional products (such as negative ions, night light, anti-static terrazzo) to meet diverse needs.
5, Comprehensive comparison and summary
Comparison Dimension Square Material Pressing Plate Pressing
Pressing method: Cube mold, first cut the square material and then cut the single piece mold, directly pressing the sheet metal
Aggregate particles can be oversized (3-8cm), with smaller particles and uniform patterns
Uneven physical performance density, slightly lower strength, higher density, excellent strength
Flexibility in specifications, high degree of freedom in thickness, but smaller single board specifications can produce oversized sheets
The production efficiency process is complicated, the efficiency is low, the degree of automation is high, and the efficiency is high
The cost of molds is low, the unit cost is low, the equipment investment is large, and the unit cost is high
Suitable for special textures and ultra thick boards in specific scenarios, requiring high quality, functionality, and large-area tiling
6, Recommended Choice Suggestions
Material selection and pressing: If the project requires oversized particle patterns, ultra thick sheets, or is cost sensitive, and does not require high quality uniformity.
Plate selection and pressing: If you pursue high strength, high density, uniform color, or need to develop functional products and oversized plates, it is recommended to prioritize the plate pressing process.