Why Should I Use Macor?
When you need the performance of a technical ceramic (high temperature, electrical resistivity, zero porosity) and your application demands the ready fabrication of a complicated shape (quickly, precisely, privately), look at MACOR MGC. It will lower costs and substantially reduce the time between design and actual use.
Machining Macor
Key factors for successful machining are proper machining speeds and coolant.
MACOR Machinable Glass Ceramic can be machined with high-speed steel tools, but carbide tools are recommended for longer wear.
Achieve the best results by using a water-soluble coolant, such as Cimstar 40 - Pink, especially formulated for cutting and grinding glass or ceramic.
No post firing is required after machining.
Sawing
Use a carbide grit blade at a band speed of 100fpm. An alternative is a silicon carbide or diamond cut-off wheel.
Grinding
Diamond, silicon carbide or aluminum oxide grinding wheels can be used.
Polishing
Start with loose 400-grit silicon carbide on a steel wheel. For the final polish, use cerium oxide or alumina on a polishing pad for glass or ceramics. A 0.5µin - AA finish can be achieved.
Turning
- Cutting speed 30-50 sfm
- Feed rate .002-.005 ipr
- Depth of cut .150-.250in
Milling
- Cutting speed 20-35 sfm
- Chip Load .002 ipt
- Depth or cut .150-.200 in.
Drilling Macor
| Drill Size | Spindle Speed | Feed Rate |
|---|---|---|
| ¼ in. | 300 rpm | .005 ipr |
| ½ | 250 | .007 |
| ¾ | 200 | .010 |
| 1 | 100 | .012 |
| 2 | 50 | .015 |
Allow at least .050" of extra material on the back side for breakout. This excess can be removed after drilling.
Tapping
Make clearance holes one size larger than those recommended for metals. Chamfer both ends of the hole to reduce chipping. Turn the tap in one direction only. (Turning the tap back and forth can cause chipping.) Continuously flush with water or coolant to clear chips and dust from the tap.
Online Ordering and Registration System
Ordering your standard size MACOR products is now a whole lot quicker and easier. New and current customers can Apply for a Customer Account TODAY and make the order process even faster.
