Plunger Tip
Featuring an outer Ni‑Cr self‑fluxing alloy coating, it achieves metallurgical bonding rather than the mechanical adhesion of conventional HVOF thermal spraying, delivering fivefold higher bonding strength. Conventional thermal‑spray coatings rely on mechanical adhesion and exhibit porosity, making them prone to failure under thermal cycling. Our advanced process achieves metallurgical bonding with low porosity, delivering superior durability, along with low residual stress, low dilution, and crack‑free coatings. With good high‑temperature resistance, wear and corrosion resistance, as well as good resistance to molten aluminum adhesion, it improves die casting quality while maintaining high production efficiency.
Conventional ring-fitted plunger tips exhibit gaps inherent to their mechanical assembly. These gaps permit the infiltration of molten aluminum, leading to adhesion and corrosion that foster hard-particle formation, severe adhesion renders the removal of these rings labor-intensive and inefficient. The wear mechanism of the assembled structure involves the superposition and mutual promotion of multiple wear forms, it’s not a simple "1+1" effect, but a further amplification of the deterioration process. More importantly, the failure mode of such assembled plunger tips is highly concealed, and its service life attenuation curve shows virtually no obvious warning phase. The composite plunger tip features multifunctional coating that combines the high thermal conductivity of copper alloy, it achieves metallurgical bonding without any assembly gaps, delivering e...
The premium plunger tip delivers outstanding performance under harsh working conditions including large-tonnage machines, fast production cycles and high injection pressures. Conventional thermal‑spray coatings rely on mechanical adhesion and exhibit porosity, making them prone to failure under thermal cycling. Our advanced process achieves metallurgical bonding with low porosity, suitable for heavy‑duty die‑casting conditions, along with low residual stress, low dilution, and crack‑free coatings. Featuring excellent high‑temperature resistance, wear resistance and corrosion resistance as well as outstanding resistance to molten aluminum adhesion. The coating delivers outstanding friction reduction, self-lubricating capacity and anti-seizure performance under the high-temperature conditions of die casting. The surface with lower hardness effectively e...