terrazzo tile machine production process

terrazzo tile machine production process

 

1. Equipment and raw material preparation

 

‌Terrazzo tile machine Introduction‌

It adopts fully automatic hydraulic forming equipment, integrating stirring, feeding, pressing and demoulding functions, which is suitable for the production of high-strength and high-precision terrazzo tiles.

‌Raw material ratio‌

 

ingredient     ratio (weight %)

Cement 25%-30% 42.5 grade and above Portland cement

Aggregate    60%-65% marble/quartz sand (particle size 2-8mm)

Pigment        3%-5% inorganic oxide weather-resistant color powder

Water    8%-10% clean and free of impurities

2. Production process

 

1. Raw material pretreatment

 

Aggregate cleaning : Aggregates are washed and screened to remove dust and impurities.

‌Mixing and stirring‌ : Put cement, aggregate and pigment into a forced mixer according to the proportion, dry mix for 2 minutes , add water and wet mix for 3-5 minutes until a uniform slurry is formed.

 

2. Pressing

 

‌Material feeding into mold‌ : The slurry is injected into the mold, and the vibrating material spreading machine assists in filling and compacting.

‌High Pressure Forming‌ :

Pressure: 10-20MPa (adjusted according to the thickness of the brick).

Vibration frequency: 50Hz, lasting 30-60 seconds.

Demoulding: The hydraulic ejector device automatically demoulds the bricks to check the integrity of the edges and corners.

3. Maintenance process

 

Initial setting and curing : Leave at room temperature for 24 hours and cover with plastic film to keep it moist.

Steam maintenance :

Temperature: 50-60℃, humidity ≥90%, constant temperature and humidity for 8-12 hours.

Cooling rate: ≤5℃/h, to avoid cracking.

 

4. Surface treatment

 

‌Rough grinding‌ : Use a diamond grinding head ( 60-120 mesh) for initial leveling.

‌Fine grinding and polishing‌ :

Fine grinding: Resin grinding disc (300-800 mesh) to eliminate scratches.

Polishing: wool wheel + cerium oxide polishing paste, speed 2000rpm, until glossiness ≥85°.

 

5. Quality inspection and packaging

 

Compressive strength: ≥40MPa (7 days old).

Dimension tolerance: ±1mm (side length), ±0.5mm (thickness).

Packaging: Wrapped with PE film for moisture-proofing, and fixed on wooden pallets for transportation.

3. Key process parameters

Link       parameters

Mixing time: 2min       dry mix + 5min wet mix

Molding pressure        15-20MPa (adjustable)

Steam curing cycle      8-12h (constant temperature 50-60℃)

Polishing speed    2000rpm (wool wheel)

IV. Precautions

Equipment maintenance : Clean mold residues daily and oil the hydraulic system monthly.

‌Raw material control‌ : The moisture content of aggregate needs to be ≤ 0.5% to avoid a decrease in slurry fluidity.

‌Environmental requirements‌ : The temperature of the production workshop must be ≥ 10℃, and the maintenance time needs to be extended in a low temperature environment.

5. Mechanical production advantages

Efficiency ‌ : Single machine daily output 20 00-30 00 pieces (specification 300×300mm).

‌Quality‌ : The brick density is uniform and the flexural strength is increased by more than 30%.

Cost : Labor is reduced by 70% and overall energy consumption is reduced by 25%.

 

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