HTX Die Casting Components | Ejector Pins, Core Pins & Guide Bushes
Die Casting Industry Solutions | HTX Custom Mold Components
HTX manufactures precision die casting mold components: ejector pins, core pins, guide bushings. Solve wear, thermal fatigue, ejector pin marks with tailored materials and layout design.
Industry Overview & Challenges
Die Casting Challenges (Why It’s Tough)
Wear, Thermal Fatigue & Heat Checking: Dies made from H13 or DIN 1.2367 steels must endure cyclic thermal stress and erosion under high-temperature molten metal.
- Ejector Pin Marks & Surface Defects: Indentations, protrusions, scratches due to poor ejector layout, high ejection force or improper draft angle
- Pore Formation, Shrinkage & Gas Traps: Entrapped gas or uneven cooling leads to internal voids, weak spots, or cosmetic flaws.
- Misalignment & Flash: Improper guide bush or parting line design causes flashes, burrs, dimensional inaccuracy
HTX Solutions for Die Casting Mold Components
We deliver custom-engineered mold components that address each of the challenges above, using high-grade materials, precision machining, and optimized heat treatment.
- Material & Hardness: H13 or equivalent tool steel with surface hardness ~46‑52 HRC, optional nitriding or PVD coatings for elevated wear resistance and thermal stability
- Optimized Layout: Strategic placement to avoid appearance surfaces, distribute ejection force evenly, and prevent stress concentration
- Tight Clearance & Draft Control: Typical pin‑hole clearance ≈ ±0.015 mm; draft angles of 1–3° to reduce drag and sticking
- Preventing Pin Marks: Mirror‑polished pin surfaces, slow ejection speeds, uniform cooling and proper lubrication minimize marks
- Precision Fit: CNC‑machined guide bushes with tight tolerances (<0.01 mm) and polished surfaces ensure stable mold alignment with minimal friction
- Durable Coatings: Hard chrome, nitriding or DLC treatments extend service life and resist binding, especially under high‑temperature cycling modes.
- Regular Maintenance Programs: HTX offers scheduled replacement and cleaning workflows to sustain precision and uptime.
- Flow & Venting Design: Mold‑flow simulation to minimize porosity and avoid hot tears; properly placed vents for gas escape and consistent fill patterns
- Temperature Regulation: Embedded thermocouples, mold cooling channels, and uniform heating prevent thermal imbalance and dimensional drift.
- Material & Thermal Management: Correct die steel selection, heat treatment, and thermal fatigue management to extend mold cycle life and resist cracking.
How HTX Delivers – Process Breakdown
Precision Manufacturing.End-to-End Solutions. 20+ Years of Precision Manufacturing | OEM/ODM Customization | Micron-Level Tolerance | 100% Inspection | Global Delivery in One Streamlined Solution
1. Design Consultation
Review 2D/3D models or photos. Recommend ejector layout, draft angles, boss placement, material grade.
4. Surface Treatments
Vacuum heat-treated or nitrided H13 steel, optional PVD coatings (TiN, DLC) for extended wear & smooth palm.
2. Simulation & DFM
Run mold‑flow and ejection simulations to optimize pin arrangement, venting, and structure.
5. Assembly & Inspection
Use CMM, projector, hardness testers; pin marks kept within <0.381 mm (.015 in) tolerance
3. Precision Manufacturing
CNC turning/grinding, EDM, mirror polishing of pins and bushes to tight tolerances.
6. Maintenance & Follow‑up
Provide maintenance schedules, cleaning guides; support component replacement after regular cycles.
Why Choose Us?
Premium Materials
Imported Swedish steel ensures stable performance and longer lifespan.
High Precision
±0.002mm tolerance for perfect mold fit , save time and cut costs.
13-Step Inspection
ISO-controlled quality checks from start to finish, with a 99.8% pass rate.
Fast Delivery
Daily output of 50,000+ pieces , faster lead time than competitors.
Full Custom Service
One stop solution from drawing to delivery
·Mirror polishing, wire EDM, cylindrical grinding, CNC finishing
·Surface treatments: nitriding, DLC/TiCN coatings, PVD
·Heat treatment control for hardness and toughness balance
·Tolerance control down to ±0.002mm
·Non-standard diameters, lengths, head shapes
·Special geometries (step punches, reverse tapers, custom flats)
·Tolerances for precision dies, medical tools, and high-speed stamping
·Batch customization for small & large volumes
·Tool steels: SKD61, DC53, HSS, M2, ASP23
·Stainless steels: 420, SUS304, 316L
·Carbide grades for extreme wear resistance
·Medical-grade materials (e.g. Ti6Al4V, CoCrMo)
·Guide post and guide bush matching
·Punch & die set tolerance fit (clearance optimization)
·Ejector pin and sleeve integration
·Progressive die, compound die, or injection mould matching
·Automotive stamping<br> ·Medical implant production<br> ·Electronic connector tooling<br> ·Home appliance metal parts<br> ·High-speed progressive dies
Quote Request Checklist
Material Specifications
Tolerance Requirements
Surface Treatment
Application Scenario
Drawing Availability (If none, describe)
The more details you share, the faster and more precise your quote will be! Looking forwarded to future cooperation.
Request a Quote
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