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MILLING TITANIUM Solid Carbide Endmills (SCEM) and MULTI-MASTER Milling Heads

The choice of carbide grades in SCEM and MULTI-MASTER families is a little lower
compared to indexable milling cutters. The grades available are are more general and
all-purpose from a practical standpoint, and feature a wide field of application. Table
5 shows the recommended carbide grades for typical and trochoidal milling.

Table 5 Choosing ISO S Carbide Grades for SCEM and MULTI-MASTER Heads

1st choice
2nd choice
1st choice
Grades Typical milling techniques Trochoidal milling 2nd choice
Solid carbide endmills IC300 IC900 IC902 IC903
MULTI-MASTER heads IC308 IC908 IC903 -

Example
The production engineering office of a manufacturer of titanium plant is planning
comparative tests for indexable high feed milling cutters. The operation is milling the
large-sized open plane surface of a titanium component. Technologists chose ISCAR
MILL4FEED shell mills carrying inserts FFQ4 SOMT 120516HP. As the catalog
shows, the inserts are available in grades IC882, IC830, IC5820 and IC808. The
office decides to test two different grades. Which of them should be ordered?

High feed (fast feed in ISCAR terminology) milling causes considerable tooth load. In accordance
with grade data (refer to Fig. 3), the available grades IC882, IC830, IC5820 and IC808
feature the following ISO application fields: (S20-S30), (S15-S30), (S15-S25) and (S10-S25)
correspondingly. An increasing number after “S” characterizes growth of a grade toughness,
grades IC882 and IC830 are more suitable for testing and therefore they should be ordered.

Example

Which carbide grade is the most effective for indexable milling with high pressure coolant supply?
Table 4 provides a clear answer to this question: IC5820.

Nano layered PVD coating
PVD coatings were introduced during the late 1980’s. With the use of advanced
nanotechnology, PVD coatings performed a gigantic step in overcoming
complex problems that were impeding progress in the field.
Developments in science and technology brought a new class of wear-resistant
nano layered coatings. These coatings are a combination of layers having a
thickness of up to 50 nm (nanometers) and demonstrate significant increases
in the strength of the coating compared to conventional methods.

12 ISCAR