Block Core Pins No Tip Processing With Flange

Flanged block core pins without tip processing are used in injection and die tooling when designers need stable location support for wide block cores. The flange area increases bearing and helps maintain alignment during core installation, preventing drift during clamp and actuation.

These pins are especially effective in automotive connector and housing molds where multi-part core assemblies must stay concentric over repeated cycles. Select the hardness level based on expected abrasion from core movement and ejection activity.

They are also suitable for large die-casting tooling that employs wide cores to form ribs, pockets, or internal channels. The selectable tool steels (e.g., ORVAR SUPREME or NAK80) support different balances of wear resistance and toughness to match die-setup requirements.

• Flange thickness (H) up to 6 mm with adjustable change (HC 2–6 mm) supports secure core positioning.
• No tip processing helps preserve consistent pin geometry where the design expects a straight bearing interface.

This series is offered in selectable tool steels: ORVAR SUPREME, SKH51, NAK80, RIGOR, and STAVAX ESR. The intent is to match hardness and performance to the core’s loading and abrasive exposure.

• Hardness tuning: available in 27–35 HRC, 37–43 HRC, 47–49 HRC, 51–53 HRC, 53–55 HRC, and 61–64 HRC. Higher hardness generally improves wear resistance but reduces toughness margin—important for preventing chipping under side load.
• Heat treatment state: hardness grades indicate the parts are supplied in corresponding tempered/heat-treated conditions appropriate to each steel selection (pre-hardened or quenched & tempered, depending on the chosen grade).

Where softer grades (down to 27–35 HRC) are chosen, engineers typically prioritize toughness for assemblies with higher shock risk, while harder options (61–64 HRC) better resist fretting and abrasion during repeated core handling.

Use the provided ranges to match the pin to your mold block/core interface geometry. The fixed pin length (P) is 25–100 mm, so first select the reach required to locate and support the wide block core without bottoming out.

• Width (L): 10–65 mm or 10–100 mm (depending on size option). Choose the flange/support width that provides sufficient contact area for stable alignment.
• Thickness (W): 1–20 mm (or 5.01–20 mm). Verify it fits within the available guide space in the mold block and leaves adequate clearance for assembly.
• Flange geometry: fixed flange thickness H from 0–6 mm, and the change parameter HC from 2–6 mm. Use these to fine-tune bearing height so the core seats correctly.

Hardness is selectable (e.g., 51–53 HRC or 61–64 HRC). For fit, confirm the designer’s expected clearance between locating features and the core, especially because varying hardness can change resistance to wear over time.