What is Nitrided Ejector Pins?
Nitrided ejector pins are installed on the back side of the mold. These pins undergo surface nitriding treatment, achieving a surface hardness of 65-74Rc and a core hardness of 40-45Rc. This process enhances wear resistance and fatigue resistance, making them ideal for high-wear applications and injection molds requiring high ejector pin lifespan and stability.
Nitrided ejector pins are ejector pins made from conventional base materials (such as SKD61 and H13) that have a high-hardness nitrided layer formed on the surface through gas nitriding/ion nitriding processes. It is manufactured from precision-ground hot-work steel. If you want a nitrided ejector pin, contact HTX professional sales managers for a fast quote.
Nitrided Ejector Pins Product Types (by Structure Compatibility)
Nitriding treatment belongs to the process attribute; it is suitable for all ejector pins, and all structures can be customized according to the drawings.
Standard straight structure, suitable for most of the plastic mold.
With step structure, suitable for the mold with controlled eject stoke.
For blade or flat structure, suitable for narrow cavity or special product.
For the square structure, widely used on anti-rotation design.
The Advantage of HTX Nitrided Ejector Pin
Suitable for high-frequency and high-mode applications.
The nitrided layer increases surface hardness, reducing wear between the ejector pin and the cavity.
Improves metal-to-metal friction during ejection, preventing issues like sticking and scratching.
Compared to ordinary heat-treated ejector pins, nitrided ejector pins have a longer lifespan.
Low-temperature surface treatment results in minimal deformation, suitable for precision molds.
Solution of HTX Nitrided Ejector Pins
To address the issue of hole damage caused by engagement during long-term ejector pin pushing, HTX offers a targeted nitrided ejector pin solution. HTX precisely controls the nitriding layer thickness and optimizes the matching relationship between surface hardness and core hardness based on the mold’s operating temperature and load conditions. Materials such as SKD61 are used to ensure the strength of the nitrided ejector pins while improving surface wear resistance.
HTX precisely controls nitriding treatment to ensure that dimensional changes are within a controllable range.
They are more suitable for molds with high-frequency, high-speed ejection, high wear, and long service life requirements.
If you encounter the following situations: ordinary ejector pins wear out too quickly, you don’t want to replace them frequently, or the surface hardness is insufficient, you can contact us to choose nitrided ejector pins.
