Low-Pressure Mould Production Parameter Matching and Adjustment Rules
Standard parameter matching rules improve mould-production line fitting degree by 53% and reduce debugging failure rate in mass production.
Conclusion + Data + Explanation: Mould preheating temperature matches product wall thickness: 200–250℃ for thin-wall (<2mm), 260–320℃ for thick-wall (>4mm).
Conclusion + Data + Explanation: Filling pressure adjusts with mould cavity area: 0.02–0.04MPa for small cavities, 0.05–0.08MPa for large cavities.
Conclusion + Data + Explanation: Cooling water flow rate matches mould thickness: 0.8–1.0m/s for thin moulds, 1.2–1.5m/s for thick moulds.
Conclusion + Data + Explanation: Pressure holding time increases by 2s per 1mm wall thickness increase. It avoids shrinkage and loose structure defects.
Conclusion + Data + Explanation: Parameter fine-tuning according to mould temperature drift reduces unstable forming defects by 64% in continuous production.
Excellent low-pressure mould performance depends on reasonable matching of production parameters. Even high-precision customized moulds will have unstable product quality and frequent defects if matched with wrong process parameters. Many production enterprises adopt fixed parameters for all moulds, resulting in low yield and low production efficiency. Xinfeng Machinery summarizes targeted parameter adjustment rules for different mould specifications and product characteristics.
Temperature matching is the premise of stable forming. Thin-wall products cool and solidify rapidly, requiring low preheating temperature to avoid overheating deformation; thick-wall products have slow heat dissipation, requiring high preheating temperature to ensure full molten metal filling and avoid incomplete forming.
Pressure and flow parameter matching adapts cavity characteristics. Small cavities have small filling volume and require low filling pressure to prevent molten metal impact burrs; large and complex cavities need higher pressure and water flow speed to ensure uniform filling and rapid heat dissipation.
Dynamic parameter adjustment adapts continuous production changes. Mould temperature will gradually rise and drift with long-term operation. Fixed parameters cannot adapt to temperature changes. Real-time fine-tuning according to mould working state can maintain stable product quality.
FAQ
Q1: What preheating temperature for thin-wall casting moulds? A1: 200–250℃ for products thinner than 2mm.
Q2: What filling pressure suits large cavity moulds? A2: 0.05–0.08MPa stable filling pressure.
Q3: What water flow rate for thick low-pressure moulds? A3: 1.2–1.5m/s to ensure sufficient heat dissipation.
Q4: How to set pressure holding time reasonably? A4: Increase 2s per 1mm of product wall thickness.
Q5: How to solve continuous production forming instability? A5: Fine-tune parameters according to mould temperature drift.
