HITACHI DAC (AISI H13) Die Casting Mold Parts | Nitrided Precision Core Pins for High-Pressure Casting

Engineered to Endure: High-Performance Die Casting Solutions

Maximizing Tool Life in the Most Demanding Thermal Environments

At Senlan Precision, we understand that Die Casting is a battle against thermal fatigue and liquid metal erosion. Our core pins and mold components, crafted from authentic HITACHI DAC (AISI H13), are engineered to bridge the gap between high-speed production and long-term mold stability.

By combining NADCA-grade heat treatment with precision ion nitriding, we provide the durability required to minimize downtime and eliminate premature heat checking in your casting cell.

Technical Mastery in Die Casting Component Production

1. Superior Hot-Work Steel Integrity (HITACHI DAC / H13)

• The Issue: Inconsistent steel quality leads to unpredictable mold failure and sudden thermal cracking.

• Our Solution: We exclusively source certified HITACHI DAC and premium H13 ESR. Our vacuum heat treatment process, optimized for "Impact Toughness," ensures that every core pin can withstand the brutal 600°C+ thermal shocks of aluminum injection without losing structural integrity.

2. Precision Ion Nitriding for Anti-Soldering Performance

• The Issue: Poor surface treatment leads to molten aluminum "sticking" to the pin, causing part defects and frequent maintenance.

• Our Solution: Our specialized Ion Nitriding process creates a precisely controlled diffusion layer (typically 0.1mm - 0.15mm) without the brittle "White Layer." This results in a surface hardness of HV 900-1100, providing an exceptionally slippery, wear-resistant barrier that prevents aluminum soldering and erosion.

3. Advanced Concentricity for High-Pressure Sealing

• The Issue: Geometric deviations in stepped pins cause flash and catastrophic pin breakage under high clamping forces.

• Our Solution: Utilizing multi-axis cylindrical grinding, we maintain concentricity within 0.005mm and straightness within 0.01mm over extended lengths. This guarantees a perfect shut-off at the parting line, reducing secondary finishing costs for your die-cast parts.

Technical Specifications & Manufacturing Standards

Core Application Expertise

Our HITACHI DAC components are the primary choice for:

• Automotive Powertrain: Engine block cores, transmission case inserts, and oil pan pins.

• Structural Casting: EV battery housing components and shock tower mold inserts.

• Telecommunications: Heatsink fins and 5G base station enclosures.

• High-Cycle Industrial: Gear housings and heavy-duty pump components.

Why Tier-1 Procurement Teams Trust Senlan Precision

1. Verified Thermal Processing: Every batch comes with a vacuum heat-treat chart, documenting the quenching and tempering cycles.

2. Steel Traceability: Full mill certificates provided, ensuring the steel meets the purity requirements for high-pressure die casting.

3. Expertise in Stepped & Cooling Pins: We specialize in complex cooling pin geometries that maximize water flow efficiency and reduce cycle times.

4. Heavy-Duty Export Protection: All parts are treated with high-grade anti-rust oil and individually sleeved in impact-resistant packaging for sea and air freight.

5. Zero-Defect Inspection: Utilizing CMM and Mitutoyo digital calipers, we ensure that the parts arriving at your facility are ready for immediate installation.

FAQ – Addressing Die Casting Criticals

Q: How do you handle "Heat Checking" prevention in long core pins?

A: Beyond using premium DAC steel, we apply a specific tempering process that maximizes the material's "Red Hardness," allowing the pin to maintain its strength even at elevated operating temperatures.

Q: Can you provide customized Nitriding profiles for different alloys?

A: Yes. For Magnesium casting, we adjust the nitriding parameters differently than for Aluminum or Zinc to ensure optimal chemical resistance against specific molten metals.

Q: What is your typical TIR (Total Indicator Reading) for 300mm+ pins?

A: We maintain a TIR of less than 0.02mm for extra-long pins through a combination of precision grinding and inter-process stress relief.

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