Machining NM400 steel

Machining NM400 steel can be challenging due to its high hardness and excellent abrasion resistance. However, with the right approach, you can achieve efficient machining and excellent results. Here are key considerations:

Tool Selection:
Carbide or ceramic cutting tools are ideal for machining NM400 steel because of their superior wear resistance. To reduce cutting forces and enhance surface finish, tools with sharp edges and positive rake angles should be used. These features help improve cutting efficiency and precision.

Cutting Parameters:
For optimal machining, use lower cutting speeds combined with higher feed rates. This approach helps reduce tool wear and minimize heat generation during cutting. Applying coolants or lubricants is essential to dissipate heat effectively, which extends tool life and ensures a smoother machining process.

Grinding:
For finishing operations, grinding with abrasive wheels is commonly employed to achieve precise dimensions and a smooth surface finish. This method is especially effective for achieving tight tolerances and fine surface quality.

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