How Are the Two Components of LSR Delivered Accurately?
Each component of LSR (Part A and Part B) is stored in separate barrels and fed into the machine through dedicated pumps. High-precision flow meters regulate the volume delivered to the mixing chamber. The system uses closed-loop feedback to maintain exact ratios, typically 1:1, ensuring proper chemical reaction and consistent material properties across all production runs.
What Role Does the Static Mixer Play in This Process?
After metering, both components converge in a static mixer-a tube filled with helical elements that blend the liquids without moving parts. This design ensures thorough mixing within milliseconds, triggering the catalytic reaction needed for curing. Poor mixing leads to uncured spots or uneven hardness, making the mixer a critical component for quality assurance.
How Is Cross-Contamination Between Components Prevented?
To avoid contamination, each side of the metering system is completely isolated. Dedicated pumps, check valves, and flushing mechanisms ensure no backflow occurs. After each cycle or during material changeover, the system automatically purges residual material. This level of separation is essential for maintaining the integrity of the LSR chemistry and final product safety.
What Parameters Are Monitored During Mixing?
Key parameters monitored include flow rate, pressure, and temperature of each stream. Discrepancies trigger alarms to alert operators. Some advanced systems also track viscosity changes in real time. Accurate data logging enables traceability and helps identify trends that could affect part quality or indicate maintenance needs in the metering system.