CPC counter-pressure casting molds adopt closed pressure holding structure with strict parameter standards, achieving ultra-low defect aluminum alloy casting production.
CPC counter-pressure casting mold works under 0.1–0.15MPa stable counter-pressure, 3 times higher than conventional LPDC casting mold to compact molten aluminum structure.
The cavity tolerance of CPC molds is controlled within ±0.025mm, higher than LPDC molds’ ±0.03mm standard to ensure high-precision casting molding.
CPC mold cooling water channel spacing is 10–16mm, denser than gravity casting mold, realizing rapid and uniform solidification of high-density castings.
Procast CAE simulation for CPC molds requires 1 million+ grid units, 25% more than LPDC molds to simulate high-pressure filling and feeding process.
Casting mold porosity shrinkage of CPC process is controlled below 0.5%, the lowest defect level among the three mainstream aluminum casting processes.
H13 hot-work steel for CPC molds achieves 100,000–130,000 molding cycles, with enhanced pressure resistance and thermal stability after precision tempering.
High-end aluminum wheel mold widely adopts CPC structure, improving casting compactness by 8% compared with conventional LPDC wheel molds.
EV structural part mold for high-load new energy components prefer CPC molds, meeting high structural strength and density requirements.
CPC casting mold trial-test needs 4 independent test batches, verifying pressure holding, cooling and exhaust linkage stability under high pressure.
Compared with gravity casting mold, CPC molds eliminate loose casting structure caused by insufficient feeding, greatly improving product qualification rate.
CPC counter-pressure casting mold is a high-precision upgraded mold based on LPDC and gravity casting technologies, widely used in high-end aluminum alloy casting fields. Different from conventional LPDC casting mold and gravity casting mold, CPC molds rely on closed counter-pressure environment to realize sequential filling and pressure feeding, fundamentally solving loose structure and internal porosity problems of aluminum castings. In terms of structural design, CPC molds have stricter requirements for cavity precision, sealing performance and cooling uniformity. The denser water channel layout ensures rapid heat dissipation under high-pressure working conditions, avoiding local overheating and thermal fatigue damage of H13 hot-work steel. In the field of high-end aluminum wheel mold and high-strength EV structural part mold, CPC process has become the mainstream manufacturing solution due to its ultra-low casting mold porosity shrinkage rate. Professional Procast CAE simulation must cover high-pressure fluid dynamics and solidification feeding simulation to optimize gating system and exhaust structure. The casting mold trial-test standard of CPC molds is more rigorous, requiring multiple batches of continuous production verification to ensure long-term stable operation under high pressure. Although CPC mold manufacturing cost is 20–30% higher than LPDC molds, its product qualification rate and mold service life have obvious advantages in high-end casting scenarios, bringing long-term cost reduction benefits for foundry enterprises.
FAQs
Q1: What is the working pressure range of CPC casting molds? A1: Stable working pressure 0.1–0.15MPa, higher than LPDC and gravity molds.
Q2: What is the porosity defect rate of CPC casting process? A2: Controlled below 0.5%, the lowest among three mainstream casting processes.
Q3: What products are CPC molds suitable for? A3: High-end aluminum wheels and high-strength new energy vehicle structural parts.
Q4: How many grid units are required for CPC CAE simulation? A4: No less than 1 million units, ensuring high-pressure process simulation accuracy.
Q5: What is the cavity tolerance standard for CPC molds? A5: Strictly controlled within ±0.025mm, higher precision than LPDC molds.
Q6: How long is the service life of CPC H13 steel molds? A6: 100,000–130,000 cycles, better pressure resistance than ordinary molds.
Q7: How many trial tests do CPC molds need before delivery? A7: 4 independent test batches to verify high-pressure working stability.
