Common Issues You Might Face Grinding CMP-10V

Crucible Powder Metallurgy 10V, or CMP-10V, is a high-speed carbide tool steel. Known for its excellent toughness, high hardness, and prolonged wear resistance, this material is popular among many industries. The primary alloying elements in CMP-10V include carbon, vanadium, molybdenum, and chromium along with small amounts of cobalt and tungsten. From cutting tools and industrial wear parts to aerospace and medical equipment, CMP-10V is processed to create a wide range of useful products.  Unfortunately for manufacturers, the structure in which these elements align atomically creates a brittle material with low thermal conductivity. These properties are the root cause of many common issues one might face when grinding CMP-10V.

CMP-10V’s pesky tendency for heat build-up during grinding is a direct effect of its low thermal conductivity. Excessive heat during processing causes thermal damage (cracks) to the workpiece and accelerates wheel wear. To negate this as much as possible, use a water-soluble or synthetic coolant to aid in heat dissipation and lubricate the grinding wheel. Increasing the coolant flow rate can also help increase the rate of heat transfer and reduce chip build-up. If excessive heat is still being stored in the workpiece, reduce the grinding speed or try intermittent grinding to allow for a cool-down period. Ensure the temperature of the workpiece is always being monitored to ensure it remains within safe limits (not exceeding 302 degrees Fahrenheit).

Difficulty attaining and maintaining CMP-10V’s surface finish during grinding is a product of each previous issue mentioned. With high hardness and durability, attaining the desired surface finish can be a lengthy process. During the grinding process, CMP-10V’s low thermal conductivity and brittle material structure make it difficult to avoid cracks and chips in the workpiece. External factors play a large role in successfully grinding CMP-10V. Heat build-up, wheel loading, improper wheel selection, and inadequate machine rigidity can also contribute to surface defects. Ensuring proper coolant usage, reducing grinding forces, properly securing machinery, and correct selection and maintenance of the grinding wheel are best practices to avoid unwanted cracks and chips during grinding.

Although CMP-10V can be difficult to grind, there are many ways to reduce the chances of failure during processing. Most of the issues discussed previously can be reduced or negated by appropriate wheel selection, regular monitoring and wheel maintenance, and proper coolant usage.

Whether you are looking for general guidance or are ready to get a quote, we are dedicated to helping you find the right solution – and if we can’t provide the exact wheel you need, we will let you know. We hope you’ll explore the ways our team can help your business stay ahead of the competition.