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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.






















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