I. Basic Cycle Adjustment Based on Process Accuracy Level
General Injection Molding Processes for Ordinary Structural Parts (PP/PE/ABS): After RC parameters are locked, the baseline calibration cycle is set to 12 months. This process requires temperature accuracy ≤ ±2℃, has high RC drift tolerance, and does not require high-frequency calibration.
Injection Molding Processes for Medium-Precision Engineering Parts (PC/PA6/PA66): The baseline calibration cycle is set to 8 months. This process has higher requirements for temperature stability. Regularly verify the anti-interference capability of RC filters to avoid material degradation due to overheating.
High-Precision Optical-Grade Injection Molding Processes (Optical-Grade PC/PMMA): The baseline calibration cycle is set to 4 months. This process requires a temperature difference of ≤ ±1℃ across the entire runner. Even slight RC drift can cause signal delay and temperature oscillation, requiring more frequent calibration.
Injection Molding Processes for Highly Degradable and Sensitive Materials (PVC/POM/PET): The baseline calibration cycle is set to 3 months. This process has zero tolerance for overheating. Temperature jumps caused by RC filter failure will directly lead to material decomposition, requiring high-frequency calibration and verification.
II. Dynamic Adjustment Rules Based on Production Load and Operating Conditions
24-Hour Continuous Full-Load Production Scenario: The calibration cycle for all processes is uniformly shortened by 30%. Long-term continuous operation accelerates RC hardware aging and significantly increases parameter drift.
High Electromagnetic Interference Workshop Scenario: With multiple high-power injection molding machines clustered nearby and power lines and temperature measurement lines laid on the same cable tray, the calibration cycle for all processes is uniformly shortened by 50% to prevent performance degradation of locked RC parameters due to changes in interference characteristics.
Cleanroom Low-Interference Scenario: With standardized wiring and extremely low electromagnetic interference, the calibration cycle for all processes can be extended by 50%, reducing unnecessary maintenance costs while ensuring accuracy.
III. Forced Adjustment Conditions Triggering Immediate Calibration
After the hot runner system completes its annual comprehensive maintenance and temperature measurement lines are rewired, RC calibration is immediately performed to match the new signal link impedance characteristics.
When high-power frequency converters, servo motors, or other strong interference sources are added to the workshop, significantly changing the on-site electromagnetic environment, RC parameters are calibrated immediately to adapt to the new interference characteristics.
Faults such as temperature reading jumps and overshooting during temperature rise have occurred. After the faults are repaired, RC calibration is performed immediately to eliminate potential parameter drift risks.
