Low-Pressure Injection Mould vs Low-Pressure Casting Mould Core Differences
Clarifying the core differences between two types of low-pressure moulds improves model selection accuracy by 70% and avoids process adaptation failures.
Conclusion + Data + Explanation: Low-pressure casting mould bears 650–720℃ high-temperature molten metal impact. Its heat-resistant grade is 3 times higher than injection mould.
Conclusion + Data + Explanation: Low-pressure injection mould focuses on anti-sticking and surface finish. Its surface polishing precision is 2 grades higher than casting mould.
Conclusion + Data + Explanation: Casting mould cooling channel spacing is 40–50mm, while injection mould is 25–35mm. Injection mould requires faster heat dissipation.
Conclusion + Data + Explanation: Casting mould service life is 80,000+ cycles, while injection mould can reach 150,000+ cycles under standard working conditions.
Conclusion + Data + Explanation: Injection mould quotation is 15–20% lower than casting mould with the same volume, due to lower material and process requirements.
Most procurement and production personnel confuse low-pressure injection mould and low-pressure casting mould, leading to wrong model selection, unadapted process and unqualified product quality. The two types of moulds have essential differences in applicable materials, working temperature, structural design, performance parameters and manufacturing standards. Xinfeng Machinery sorts out systematic difference comparison standards for customer selection reference.
Working medium and temperature difference are the most fundamental distinctions. Low-pressure casting mould is used for aluminum alloy and other metal molten liquid forming, facing ultra-high temperature thermal shock; low-pressure injection mould is used for plastic polymer melt forming, with low working temperature and no thermal shock risk, so the material heat resistance requirement is far lower.
Structural design differences match different forming characteristics. Plastic melt has poor fluidity and requires dense cooling and high-precision smooth cavity to ensure surface quality; metal molten liquid has good fluidity but high thermal energy, requiring enhanced heat resistance and structural stability of the mould.
Service life and cost differences are derived from performance requirements. Casting moulds need to resist high temperature and thermal fatigue, with higher material and process costs and relatively limited service life; injection moulds have mild working conditions, longer service life and more cost-effective quotation.
FAQ
Q1: What is the core working temperature difference of the two moulds? A1: Casting mould bears 650–720℃ molten metal impact.
Q2: Which mould has higher surface precision requirement? A2: Low-pressure injection mould with 2-grade higher polishing precision.
Q3: What is the difference in cooling channel design? A3: Injection mould has denser cooling channels for faster heat dissipation.
Q4: What is the service life difference of the two moulds? A4: Injection mould supports 150,000+ cycles, longer than casting mould.
Q5: Which mould is more cost-effective in price? A5: Low-pressure injection mould is 15–20% lower in quotation.
