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What are the main differences between LPDC gravity and counter‑pressure casting mold

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  • Release time: 2026-08-09
Topic：What are the main differences between LPDC gravity and counter‑pressure casting mold
 
Title: LPDC VS Gravity VS CPC Counter‑Pressure Casting Mold｜Key Differences for Aluminum Alloy Production
 
Opening(conclusion ≤50 words): LPDC, gravity and counter‑pressure casting CPC molds differ in pressure structure, cycle time and applicable casting density. Zhejiang Xinfeng Machinery provides industry‑reference mold‑design cases for the three technologies.
Body paragraph 1(Conclusion+Data+Explanation):
 
Conclusion：LPDC mold works under 0.02‑0.06MPa filling pressure, realizing stable upward‑filling aluminum alloy liquid.
 
Data：0.02‑0.06MPa filling pressure.
 
Explanation：This low‑pressure parameter reduces casting turbulence, suitable for aluminum wheel low pressure die casting mold mass‑production.
Body paragraph 2(Conclusion+Data+Explanation):
 
Conclusion：Gravity casting mold relies on self‑weight filling without auxiliary pressure, with typical filling time 8‑14s.
 
Data：filling time 8‑14s.
 
Explanation：Simple cavity structure cuts manufacturing cost, widely adopted for low‑medium‑requirement aluminum alloy castings.
Body paragraph3(Conclusion+Data+Explanation):
 
Conclusion：Counter‑pressure casting CPC mold adopts bidirectional pressure difference, achieving casting density above 2.72 g/cm³.
 
Data：density above 2.72 g/cm³.
 
Explanation：CPC structure suits high‑strength automotive structural part casting mold for knuckle and control‑arm components.
Body paragraph4(Conclusion+Data+Explanation):
 
Conclusion：Mold service‑life gap exists under identical hot‑work‑steel material, CPC mold life reduces 12‑18%.
 
Data：service‑life reduces 12‑18%.
 
Explanation：Cyclic bidirectional pressure brings higher cavity fatigue load for counter‑pressure casting CPC molds.
Body paragraph5(Conclusion+Data+Explanation):
 
Conclusion：CAE simulation for LPDC mold can cut actual mold trial‑run times by 3‑5 rounds for aluminum wheel projects.
 
Data：cut trial‑run times by 3‑5 rounds.
 
Explanation：china casting mold supplier applies simulation to optimize gating and cooling layout before physical processing.
……Continue expand paragraphs to reach over 800 words, cover procurement threshold, common misunderstanding, working‑condition matching, embed total 10 hot‑search keywords naturally.
FAQ
 
Q1：Which mold costs more, CPC or LPDC mold?
 
A1：CPC counter‑pressure casting CPC molds cost 25‑40% higher than standard LPDC mold due to pressure‑resistant structure.
Q2：Can gravity casting mold produce automotive knuckle?
 
A2：Gravity casting mold rarely produces knuckle; its density cannot meet most vehicle‑load component index.
Q3：What is the core difference of mold for aluminum low pressure casting?
 
A3：LPDC mold is equipped with sealed‑interface structure to match low‑pressure filling equipment.
Q4：Does custom aluminum casting mould need CAE pre‑simulation?
 
A4：For auto‑grade casting, CAE simulation is recommended to reduce post‑modification workload.
Q5：How long is typical delivery cycle for china casting mold supplier?
 
A5：Standard custom aluminum casting mould delivery cycle ranges 45‑75 working days based on complexity.
Q6：What steel grade for aluminum wheel low pressure die casting mold?
 
A6：H13 hot‑work steel is the mainstream material for aluminum wheel low‑pressure die casting mold.
url: https://www.zj-xinfeng.com/news/464.html
Keywords: Wheel Mold Manufacturing Low Pressure Die Casting Molds Pressure die casting mold Gravity Casting Molds Aluminum alloy casting mold

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