Block Making Machine in Syria

# How the Production Process of Concrete Block Making Machines Affects Output The production process of concrete block making machines influences output directly or indirectly through four core dimensions:

**smoothness of molding, cycle duration, finished product turnover, and process connection
. The key impacts are as follows:

I. Concrete Preparation Process: Lays the Foundation for Molding; Bottlenecks Reduce Efficiency
**Improper Mix Ratio**:
If the sand ratio exceeds the range of 35%-45% or the cement dosage is inappropriate, concrete will agglomerate and cause blockages, slowing down material feeding (single feeding time extends from 15-20 seconds to 30-40 seconds). It may also lead to brick cracking and rework-10 rework instances per day reduce production time by 1-2 hours.
- **Inadequate Mixing**:

Mixing time less than 3 minutes or low mixing speed results in dry spots or bleeding in concrete, requiring re-feeding or manual demolding (demolding time extends from 5-8 seconds to 15-20 seconds) and increasing downtime.

**Uncontrolled Slump**:
Deviation from the standard slump of 30-50mm (too thin concrete causes grout leakage; too dry concrete is hard to fill molds) extends the single molding cycle from 40-50 seconds to 1-1.5 minutes, reducing hourly output by 20%-30%.

II. Molding Process Parameters: Directly Determine Cycle and Qualification Rate

**Improper Pressing Pressure**:

Pressing pressure below 18MPa requires secondary pressing (adding 10-15 seconds per mold) and raises the rejection rate to 8%-10%; pressure above 28MPa slows down pressing (from 8-10 seconds to 15-18 seconds per cycle), accelerates mold wear, and increases downtime for mold replacement.
**Unbalanced Vibration Time**:
Vibration time less than 5 seconds leads to low compactness and frequent rework; time over 10 seconds prolongs the cycle, reducing production by 288 molds (about 1,728 standard bricks) per 8-hour shift.
**Excessively Fast Demolding Speed**:
Raises brick damage rate to 5%-8% and easily causes mold jamming. Each jam requires 10-15 minutes of downtime for cleaning-3 jams per day reduce production by 108 molds.

III. Curing Process: Affects Site Turnover and Indirectly Limits Output
**Differences in Curing Methods**:

Steam curing (24-48 hours) enables fast turnover, allowing the equipment to operate in two shifts (daily output of 8,000-12,000 standard bricks); natural curing (7-14 days) has a long cycle. When the site is full of uncured bricks, production halts, and monthly output is only 1/3-1/2 of that with steam curing.
**Uncontrolled Curing Environment**:

Large fluctuations in temperature/humidity or poor ventilation cause brick cracking and require re-curing (adding 12-24 hours), pushing the rejection rate above 10%.

IV. Process Connection: Avoid Inter-process Waiting and Ensure Continuous Production - If the mixing capacity fails to meet the molding demand (e.g., a 5m³/h shortage of concrete), the molding process shuts down for 15-20 minutes per hour, reducing 8-hour output by 25%-30%. - Without an automatic transfer line, manual transfer is slower than the molding speed, cutting daily production time by 2-3 hours.