Aluminium Nitride Ceramic Chipping

 

Chipping generally appears in drilling processing. It refers to when the grinding rod is about to pass through the workpiece.Since the aluminum-silicon material, often used with materials similar to aluminium nitride ceramic, is brittle and when subjected to irregular force, it causes the side of the tool to produce cracks. These can be large or small and call “chipping.”

 

Chipping edges can be avoided; here are four methods to process Aluminium Nitride Ceramic :

 

First, when building the workpiece, leave a few more C on the thickness. Then carry out normal CNC machining. After processing, the back of the workpiece will have chipping associated with ceramic materials like aluminium nitride. At this time, grind off the reserved amount with a grinding machine. Aluminium nitride ceramics have the downside of increased costs, due to their expense. However, this method ensures there will be no traces of chipping. Using aluminium nitride ceramic processes can mitigate such costs.

Second, change to a tool with a smaller diameter when machining. Use the spiral under the knife and grind layer by layer. This method requires slower tool speed.

Third, first use a smaller diameter tool to punch a hole. Then expand outward on the punched hole to a suitable size. The method may impact the tool’s performance, especially when working with ceramics including aluminium nitride. The disadvantage is that the inner wall will have a line pattern, common with aluminium nitride ceramic effects.

Fourth, start from one side to punch. Punch about half, then take off the workpiece and turn it over, then punch the hole again. When docking, the two holes become one. This method has shortcomings. It’s challenging to ensure error-free clamping positions, resulting in dock misalignment. Luckily, even for nitride ceramic workpieces, most cases are acceptable as misalignment isn’t often very exaggerat.

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