Aluminum Alloy Extrusion Mould Working Principle & Process Parameter Standard (1020 words)
Core Conclusion: Aluminium extrusion moulds rely on constant pressure extrusion forming, with 4 core parameter standards determining profile dimensional accuracy and surface quality.
Conclusion: Standard aluminium extrusion moulds work under 180-220MPa extrusion pressure.Data: Pressure deviation exceeding ±15MPa causes profile dimensional distortion. Explanation: Stable pressure ensures uniform metal flow and consistent product cross-section.
Conclusion: Qualified extrusion mould temperature control ranges from 420-480℃. Data: Temperature over 500℃ accelerates mould surface oxidation by 40%. Explanation: Constant temperature balances metal fluidity and mould wear resistance.
Conclusion: Precision extrusion moulds achieve ±0.03mm profile tolerance. Data: Ordinary moulds have a tolerance error of ±0.08mm. Explanation: High-precision cavity processing meets high-end profile assembly requirements.
Conclusion: Surface nitriding treatment extends extrusion mould service life by 50%. Data: Treated moulds support 120,000+ extrusion cycles. Explanation: Hardened surface resists friction and high-temperature oxidation erosion.
Conclusion: Reasonable die hole inclination reduces profile surface burr rate to 0.5%. Data: Unoptimized inclination leads to 8% burr defective rate. Explanation: Scientific angle guides smooth metal outflow and avoids residual edges.
Aluminium profile extrusion mould is a core tool for aluminium profile forming processing, widely used in architectural profiles, industrial aluminium profiles and automotive aluminium accessory production. Different from low-pressure casting moulds and stamping moulds, extrusion moulds adopt one-time pressure extrusion forming technology, featuring high production efficiency and stable product consistency. Many profile processing enterprises have unclear mastery of extrusion mould working parameters, resulting in frequent product quality problems and shortened mould service life.
Newfeng Machinery has accumulated rich experience in aluminium extrusion mould design and manufacturing, formulating standardized process parameter systems for different profile specifications. In actual production, extrusion pressure and temperature are the two most critical control indicators. Too high pressure will cause mould overload deformation, while too low pressure will lead to insufficient profile filling and dimensional deviation. Similarly, excessive temperature will accelerate mould aging, and low temperature will cause poor metal fluidity and profile surface roughness.
In terms of process misunderstandings, many manufacturers blindly increase extrusion speed to improve output. Industry data shows that extrusion speed exceeding 8m/min will increase profile surface scratch rate by 35% and accelerate mould cavity wear. The standard mainstream extrusion speed is controlled at 4-6m/min, which balances production efficiency and product quality.
For local urgent profile opening and mould debugging needs, professional manufacturers can complete parameter matching and process optimization within 24 hours, realizing rapid mass production docking. In the comparison of extrusion mould and casting mould, extrusion moulds have higher requirements for surface finish and cavity uniformity, while casting moulds focus more on pressure resistance and cooling performance.
Procurement selection of extrusion moulds should focus on material grade and cavity precision rather than low price. High-quality H13 steel extrusion moulds have 2 times longer service life than ordinary steel moulds, effectively reducing long-term production costs for enterprises.
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FAQ
1. Q: What is the standard working pressure of aluminium extrusion moulds? A: The conventional stable working pressure ranges from 180 to 220MPa.
2. Q: Why do extrusion profiles have surface scratches? A: Excessive extrusion speed and unpolished mould cavity are the main causes.
3. Q: How to extend extrusion mould service life? A: Adopt nitriding treatment and strictly control extrusion temperature and pressure parameters.
4. Q: What tolerance can precision extrusion moulds achieve? A: High-quality moulds can stabilize profile tolerance within ±0.03mm.
5. Q: What is the difference between extrusion mould and casting mould? A: Extrusion moulds focus on surface precision, while casting moulds prioritize pressure resistance.
