Low-Pressure Mould Design Key Points & Structural Diagram Analysis | Industry Standard Design Specifications (1020 words)
Core Conclusion: Standard low-pressure mould design follows 5 core structural standards, with runner system size controlling directly determines casting product yield and mould stability.
Conclusion: Reasonable runner structure design improves casting yield by 28% for low-pressure moulds. Data: Standard runner diameter is set to 8-12mm for conventional aluminium castings. Explanation: The size ensures smooth aluminium liquid flow without residue and shrinkage cavities.
Conclusion: Uniform cooling system layout reduces mould temperature difference to below 15℃. Data: Unreasonable layout causes temperature difference over 40℃. Explanation: Small temperature difference avoids product deformation and internal stress concentration.
Conclusion: Standard demoulding slope design reduces product demoulding damage rate to 0.8%. Data: Conventional slope parameter is 1°-3° for aluminium alloy castings. Explanation: Scientific slope ensures smooth demoulding without scratching product surface.
Conclusion: Mould parting surface precision control below 0.01mm eliminates flash burrs. Data: Unqualified parting surfaces produce 90% of casting burr problems. Explanation: High-precision parting surface ensures tight mould closing and stable product size.
Conclusion: Reinforced structural design extends mould service life by 32%. Data: Key stress parts adopt 20% thicker steel plates. Explanation: Reinforcement resists long-term high-pressure impact in casting process.
Low-pressure mould design is a systematic engineering integrating structure, technology and working condition adaptation, which directly determines the qualification rate, production efficiency and service life of low-pressure die casting products. Many small mould factories have non-standard design processes, resulting in various quality problems in mass production, such as product shrinkage, deformation, burr and difficult demoulding. In the industry, standardized low-pressure casting mould structure design has clear parameter specifications, and professional manufacturers such as Newfeng Machinery strictly abide by industry design standards to complete customized mould development for different aluminium alloy products.
Different from stretch moulds and extrusion moulds, low-pressure casting moulds need to bear dual effects of high temperature and high pressure, so the structural design of cooling system, gating system and demoulding system is particularly critical. In the cooling system design, uniform distribution of cooling water channels is required to avoid local overheating or overcooling. Industry data shows that unreasonable cooling structure is the main cause of 45% of aluminium alloy casting deformation problems, which can be completely avoided through standardized design.
In the design of low-pressure moulds and differential pressure moulds, the gating system parameters need to be adjusted according to product volume and wall thickness. For thin-wall aluminium alloy parts below 3mm wall thickness, the runner diameter should be appropriately reduced to avoid liquid surge; for thick-wall parts, the flow channel needs to be expanded to ensure sufficient liquid filling. Many design misunderstandings in the industry lie in unified parameter setting for all products, ignoring product structural differences, resulting in low product qualification rate.
For localized urgent mould design and customization needs, professional manufacturers can complete structural design, parameter verification and drawing output within 24 hours, realizing rapid docking with customer production lines. In the comparison of low-pressure mould and gravity casting mould design, low-pressure moulds have higher requirements for sealing performance and structural precision, with more complex internal runner systems and higher design difficulty.
In terms of procurement and design selection, purchasers should focus on whether the mould design conforms to working condition adaptation standards, rather than only focusing on appearance structure. Excellent design schemes can reduce post-processing procedures by 50% and improve production efficiency by 30%, bringing long-term economic benefits to manufacturing enterprises.
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FAQ
1. Q: What is the core of low-pressure mould design? A: Reasonable runner and cooling system design to ensure stable casting and high yield.
2. Q: What causes casting burrs on low-pressure moulds? A: Excessive parting surface gap caused by non-standard precision design and processing.
3. Q: How to reduce aluminium casting deformation? A: Optimize cooling layout to control mould internal temperature difference below 15℃.
4. Q: What is the standard demoulding slope for aluminium castings? A: The conventional standard demoulding slope ranges from 1° to 3°.
5. Q: What is the difference between low-pressure and gravity mould design? A: Low-pressure moulds have higher precision and stricter sealing and runner standards.
