Step‑type Upper Punch
This cemented carbide step‑type upper punch is engineered for fully‑automatic powder metallurgy presses. It performs dry compaction for stepped annular and inner‑hole green compacts, supporting mass production of oil‑impregnated bearings, gear blanks and flange rings for automotive and construction machinery. Compatible with multi‑cavity and large‑tonnage single‑cavity pressing molds.
High‑Wear‑Resistant Cemented Carbide Upper Punch for Powder Dry Compaction
Our carbide step‑type upper punch is custom‑manufactured for fully‑automatic mechanical powder metallurgy presses. Designed for dry‑press forming of stepped annular and inner‑hole powder compacts, it serves high‑volume manufacturing of key components including annular oil‑impregnated bearings, gear blanks and flange rings widely used in automotive and engineering machinery.
The stepped outer‑diameter structure acts as positioning shoulder to limit pressing stroke. Central through hole allows core rod penetration to form inner bores of workpieces. Side elongated slots facilitate air evacuation during compression to avoid cracking and delamination of green parts. It fits both multi‑cavity and large‑tonnage single‑cavity mold setups for stable long‑run mass‑production.
The stepped outer‑diameter structure acts as positioning shoulder to limit pressing stroke. Central through hole allows core rod penetration to form inner bores of workpieces. Side elongated slots facilitate air evacuation during compression to avoid cracking and delamination of green parts. It fits both multi‑cavity and large‑tonnage single‑cavity mold setups for stable long‑run mass‑production.
Features
- High Wear Resistance: Made of premium cemented carbide material, delivers long service‑life under continuous powder compaction working conditions.
- Precise Step‑Shoulder Positioning: Step-type shoulder structure limits pressing stroke, guarantees consistent dimensional accuracy for annular green compacts.
- Optimized Air‑Evacuation Design: Side vent slots together with central through‑hole effectively avoid cracking, lamination and blistering of powder compacts during dry pressing.
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