Key Considerations for CNC Milling of Hardened Steel: A Professional Guide

CNC milling is one of the most versatile machining processes used today. Not only can it be used to produce parts that would otherwise take days or weeks using traditional methods, but it can also be used to make parts that may not be possible using other methods. Amongst the several CNC milling technologies, CNC micro-milling is a recent development in metal machining industry, which is largely employed to machine hardened steel. The micro-milling process offers great advantages when machining hardened steel over conventional milling processes, particularly, in terms of surface finishes and dimensional accuracy. Being said this, micro-milling of hardened steel is one of the most challenging machining operations. A clear understanding of several parameters that influence the entire machining process is necessary for successful high-speed milling of hardened steels. Any flaw can lead to cutting errors and even cause the machine to fail permanently. This post is thus intended to throw light on the several key elements to consider while implementing CNC milling technology for machining hardened steel in your machining shop.

Things to Consider While Employing CNC Milling Technology

Products and parts made from hardened steel are common in many industries, including automotive, military and defense, medical, electronics, and semiconductors, among others. The material offers superior strength, and hardness, which makes it ideal for use in various parts of machines or equipment. However, the process of micro-milling hardened tool steel is not straightforward. There are several factors that need to be considered when micro-milling hardened tool steel. A few amongst them are:

• When machining hardened tool steel, it is extremely important to choose the correct milling cutter. Make a wise selection from ball end mills, round corner flat end mills, and sharp corner flat end mills that suit the work piece.

• Maintaining a constant chip load on the milling tool’s cutting edges is critical to guarantee tool life and component quality in milling, particularly in high-speed milling of hardened steels.

• Tool runout is another important but frequently overlooked aspect in milling operations. In general, tool life is cut in half when runout exceeds 0.0004 inch. When using very small tools, minimizing runout becomes even more important.

• It is not recommended to leave too much part stock for finish milling. For cutters with a diameter of about 1/8-inch and bigger, it is advisable to leave around 1% of the cutter diameter for finishing.

CNC milling technology has been used for machining hardened steel tools. If this process is not properly carried out, it can lead to poor quality finished products. There are numerous machining shops that offer CNC milling services, but finding the right one can be challenging. An unreliable company will not only take out your valuable time, but they can also damage your work pieces or lead to faulty parts. Therefore, it is always better to choose a CNC milling service provider that offers affordable quotes, excellent customer service and innovative solutions to meet your manufacturing needs like BDE Manufacturing Technologies. With years of experience in the field, BDE ensures that your parts are milled and machined perfectly. Also, they are widely known for their safe and efficient operations and quick turnaround time with higher precision. Talk to the team BDE today and get to know their capabilities in CNC milling technology.