Die casting aluminum medium plate is a specialized aluminum component produced via high-pressure die casting, combining aluminum’s inherent advantages (ligero, resistencia a la corrosión) with the precision and structural integrity of die casting. Unlike standard aluminum plates, it features customizable thicknesses (typically 2–20 mm), complex structural capabilities, and strict performance metrics—making it indispensable for industries ranging from consumer electronics to automotive. Este artículo desglosa sus características principales., material formulations, production workflow, escenarios de aplicación, and industry trends, helping you leverage its potential for high-quality manufacturing.
1. Características del núcleo & Ventajas
Die casting aluminum medium plate stands out for its unique blend of performance and versatility. Below is a 总分结构 explaining its key traits, supported by specific data and comparative analysis:
1.1 Standout Properties
These properties address critical manufacturing needs, distinguishing it from traditional aluminum plates:
- Ligero & Alta fuerza: Combines aluminum’s low density (2.7 gramos/cm³) with die casting-induced structural density. High-modulus formulations (with Si, magnesio, Minnesota) lograr elastic modulus 80–90 GPa, tensile strength 300–360 MPa, y elongation ≥2.0% —outperforming standard aluminum plates (tensile strength 150–250 MPa).
- Excellent Physical Performance: Boasts thermal conductivity of 180–220 W/(m · k) (ideal for heat dissipation) and electrical conductivity of 30–40% IACS (suitable for electromagnetic shielding). Its natural oxide layer provides inherent corrosion resistance, withstanding 48-hour salt spray testing (por ASTM B117) sin óxido.
- High Customization: Supports multi-cavity mold production (arriba a 8 cavities per mold) for high-volume needs and personalized structural designs (P.EJ., integrated ribs, agujeros, or thin-walled sections down to 0.5 milímetros).
1.2 Advantage Over Traditional Materials
The table below contrasts die casting aluminum medium plate with standard aluminum plates and steel plates:
| Material | Peso (gramos/cm³) | Resistencia a la tracción (MPA) | Conductividad térmica (con/(m · k)) | Costo (Relativo) | Aplicaciones ideales |
| Die Casting Aluminum Medium Plate | 2.7 | 300–360 | 180–220 | Medio | 5G phone midboards, Soportes de batería EV |
| Standard Aluminum Plate (6061) | 2.7 | 150–250 | 160–180 | Bajo | Simple structural parts (P.EJ., shelf brackets) |
| Steel Plate (Q235) | 7.8 | 375–500 | 45–50 | Alto | Heavy-duty load-bearing parts (P.EJ., marcos de máquina) |
2. Material Formulation & Proceso de preparación
The performance of die casting aluminum medium plate depends on precise material 配比 and strict process control. A continuación se muestra un desglose detallado:
2.1 Key Material Formulations
Two primary alloy systems dominate, cada uno adaptado a necesidades específicas:
| Alloy Type | Composición | Propiedades clave | Aplicaciones ideales |
| High-Modulus Alloy | Y (16–25%), magnesio (1.0–1.5%), Minnesota (0.5–0.8%), Nótese bien (0.05–0.2%), rare earths (Ce/La: 0.1–0.3%), PAG (0.01–0.03%, metamorphic agent), remainder Al | Rigidez (E=80–90 GPa), buena estabilidad dimensional | 5G phone midboards, precision chassis brackets |
| Traditional Alloy (ADC12) | Y (9.5–12%), Cu (1.5–3,5%), magnesio (0.3–0.6%), Ceñudo (≤1.3%), remainder Al | Excelente fluidez, baja contracción (0.5–0.8%), rentable | Disipadores de calor LED, piezas interiores automotrices |
2.2 Critical Preparation Steps
The production process follows a linear, rigorous workflow to ensure quality:
- Smelting Control:
- Heat aluminum ingots to 650–700°C in a ceramic-lined furnace (to avoid iron contamination).
- Add alloying elements in stages: Si first (melts at 1414°C), then Mg/Mn (low melting points), and finally rare earths/Nb (to refine grains).
- Refine with argon gas (caudal: 5 l/min) para 15 minutes to remove hydrogen (≤0.15 mL/100g Al) and skim dross (residuos de óxido) to ensure purity.
- Die Casting Parameters:
- Temperatura del molde: 180–220 ° C (lower than conventional die casting to accelerate cooling and densify microstructure).
- Inyección: 80–120 MPA (higher than standard die casting to fill thin sections).
- Presiono de sujeción: 50–70 MPA (maintained for 10–20 seconds to prevent shrinkage).
- Post-tratamiento:
- Guarnición: CNC trimming (tolerance ±0.03 mm) to remove sprues and runners.
- Tratamiento superficial: Options include electroplating (Ni/Cr: 5–10 μm thickness for aesthetics), electrophoresis (transparent/colored coatings: 10–15 μm for corrosion resistance), o pulido (Ra ≤0.8 μm for high-gloss applications).
- Quality Testing: 100% inspección dimensional (via CMM) and random metallographic analysis (to verify grain size ≤50 μm).
3. Key Application Scenarios
Die casting aluminum medium plate serves diverse high-demand industries, each leveraging its unique properties:
3.1 Electrónica de consumo
- 5G Phone Midboards: Acts as the internal support structure, requiring high stiffness (E≥80 GPa) to withstand drop impacts (Para GB/T 35465-2020) and thin thickness (2–3 mm) for device slimness. High-modulus alloys meet these needs, with integrated electromagnetic shielding to reduce signal interference.
- Computer Chassis Brackets: Provides structural support while integrating heat dissipation channels (thermal conductivity ≥180 W/(m · k)) to cool CPUs/GPUs. Its lightweight design reduces overall device weight by 20–30% vs. soportes de acero.
3.2 Industria automotriz
- EV Battery Brackets: Secures lithium-ion batteries, requiring high strength (tensile strength ≥300 MPa) y resistencia a la corrosión (to withstand battery electrolyte exposure). ADC12 alloy variants are cost-effective for high-volume production (100,000+ unidades/año).
- Body Components: Used in door frames and roof brackets, reducing vehicle weight by 10–15% (critical for EV range) and improving crash safety (energy absorption ≥20 kJ/m²).
3.3 Industrial & Iluminación
- LED Heat Sinks: Utilizes thermal conductivity (180–220 W/(m · k)) to dissipate heat from high-power LEDs (100–200 W), preventing overheating and extending LED lifespan to 50,000+ horas.
- Industrial Equipment Frames: Combines lightweight (reducing equipment transport costs) with stiffness (E≥75 GPa) to support heavy machinery components (P.EJ., alza de bombas).
4. Control de calidad & Testing Standards
Strict quality control ensures consistent performance. Below is a list of key tests and standards:
- Chemical Composition Analysis: Optical Emission Spectroscopy (OES) verifies element content (tolerance ±0.1% for Si/Mg).
- Prueba mecánica: Prueba de tracción (per ASTM E8) for strength/elongation, and flexural testing (per ASTM D790) for stiffness.
- Microstructure Inspection: Metallographic analysis (4% nitric acid etch) to check for grain size (≤50 μm) and precipitated phase distribution (uniform Mg₂Si particles).
- Pruebas no destructivas: X-ray flaw detection (per ASTM E186) to identify internal porosity (≤2% volume), and eddy current testing (per ASTM E2434) Para defectos superficiales (P.EJ., grietas, pozos).
5. Industry Trends & Perspectiva futura
Three trends are shaping the evolution of die casting aluminum medium plate:
- Innovación tecnológica: Fundición a presión semisólida (SSDC) is gaining traction—processing aluminum at 50–60% solid fraction to enhance strength (tensile strength +15–20% vs. conventional die casting) and reduce porosity. This makes it suitable for high-load EV components (P.EJ., soportes de suspensión).
- Fabricación verde:
- Eco-Friendly Surface Treatments: Water-based electrophoresis replaces solvent-based paints, cutting VOC emissions by 40%.
- Recycled Aluminum: Use of post-consumer recycled aluminum (PCR) is rising, with targets of 50% PCR content by 2026 (reducing energy consumption by 95% VS. virgin aluminum production).
- Cross-Field Expansion: Demand is growing in AI (high-power chip heat sinks) and drones (lightweight structural parts for extended flight time). Emerging applications in medical devices (P.EJ., carcasas de equipos de diagnóstico) leverage its biocompatibility (para ISO 10993-1).
La perspectiva de la tecnología de Yigu
En la tecnología yigu, we see die casting aluminum medium plate as a cornerstone of lightweight, fabricación de alta precisión. For 5G clients, we use high-modulus alloys (Si=20%, Nb=0.15%) to produce phone midboards with E=85 GPa and ±0.03 mm dimensional accuracy—meeting strict drop test standards. For EV clients, our semi-solid die casting process delivers battery brackets with 340 Resistencia a la tracción MPa y <1% porosidad. También priorizamos la sostenibilidad: 40% of our aluminum is recycled, y utilizamos electroforesis a base de agua para reducir las emisiones. Al final, Este material no se trata sólo de rendimiento, sino de permitir una vida más ecológica., Productos más innovadores en todas las industrias..
Preguntas frecuentes
- ¿Cuál es el rango de espesor típico de la placa mediana de aluminio fundido a presión??
Va desde 2 mm a 20 milímetros, con personalización posible para necesidades específicas. Placas delgadas (2–5mm) se utilizan para placas intermedias de teléfonos 5G y disipadores de calor LED, mientras que las placas más gruesas (10–20 milímetros) adaptarse a piezas estructurales automotrices (P.EJ., soportes de batería) y marcos de equipos industriales.
- Can die casting aluminum medium plate be welded or machined post-production?
Yes—its weldability (via TIG welding, per AWS D1.2) makes it suitable for assembly, though high-modulus alloys may require pre-heating (150–200 ° C) Para evitar agrietarse. It also machines well with carbide tools, achieving Ra ≤0.8 μm surface finish via CNC milling.
- What is the lead time for die casting aluminum medium plate production?
For standard alloys (P.EJ., ADC12) with existing molds, El tiempo de entrega es 7–10 días para lotes pequeños (1,000–5,000 unidades). For custom high-modulus alloys or new molds, lead time extends to 4–6 semanas (including mold design, pruebas, and production ramp-up).