CoroMill® 425 is a new finishing concept for cast iron face milling, specifically designed for the automotive business. The accurate and reliable adjustment system makes CoroMill 425 the easiest to use system on the market. It has eight cutting edges, and the same multi-edge inserts are used both as working inserts and as wiper inserts, mounted in the same position.
Benefits
Easy to use
Eight cutting edges
Accurate and reliable adjustment system
Application
Engine blocks
Cylinder heads
Finish face milling in cast iron
Surface finish within the range Ra<1 micrometer and Rz<10 micrometer, WT<10 micrometer (at recommended cutting data), and Rmax <15 micrometer
Materials: GCI, NCI, CGI
Main components:
Other components: axle housings, brake carriers, crankcases
How to overcome common challenges
Time consuming insert indexing
The wiper inserts are exchanged at the same time as the working inserts. The patented insert adjustment system provides reliable, accurate insert positioning. The system also allows to adjust the wiper up and down without loosening the cartridge clamping screw.
Frittering or burr on exit
The insert design with a 25° entering angle and different optimized chamfers helps to decrease frittering and burr formation.
Tool life
Grades GC1010 (dry) and K20W (wet) ensures a better tool life in CGI-material. Wiper and working inserts have the same tool life.