Material and Surface Treatment of Valve Needle-Rewin Seiko,Precision Hot Runner Core Component Manufacturer

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Material and Surface Treatment of Valve Needle

Release Date:

2025-08-08

The valve needle body is usually made of high-hardness steel, such as 4140 alloy steel or 1Cr13 stainless steel, with a yield strength of over 850MPa. The surface is nitrided to enhance wear resistance, and some high-end models use CrAlN coating, reducing the friction coefficient to below 0.15.

The valve needle body is usually made of high hardness steel, such as 4140 alloy steel or 1Cr13 stainless steel, with a yield strength of over 850MPa. The surface is nitrided to enhance wear resistance, and some high-end models use CrAlN coating, reducing the friction coefficient to below 0.15.

Keywords:

Rewin Seiko

Displacement accuracy control of the valve needle

The installation position of the valve sleeve affects accuracy

Displacement accuracy control of the valve needle

The installation position of the valve sleeve affects accuracy

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