SECO Germany encountered a real challenge in one of their key customers: a 660mm, 770mm deep hole in the stator housing, made of GG-30 (Seco material group 14), with intermittent cutting, Unequal amount. 
Seco CBN inserts are used in the GG30 material. The boring tool is connected by a bridge, which is equipped with a fine boring block and a counterweight, and then extended by the GRAFLEX module connection to a length to diameter ratio of 870/90 (almost 10 Times!). The bridge is mounted on a spindle that can be telescoped on a horizontal machine. The customer uses the CCMT09T304-F1 TK2000 insert with a processing speed of 100m/min, f=0, 21 mm/rev, 48 rpm, Vf=10 mm/mn, L=770x6 mm (ie 4620 mm). As a result, production efficiency is significantly affected by the SOOQ.cn copyright, and the tool trembles from time to time. Using the CBN insert CCGW09T304S-01020-LF-CBN200, the cutting parameters are VC=630 m/min, 300 rpm, f=0, 16 mm/rev, Vf=50 mm/min, L=770x6 mm (ie 4620 mm. ), tool life 92.40 minutes. Processing time has been reduced from 8 hours to less than 2 hours (92, 40 min)! The annual cost savings are 100,000 €! CBN performs very well in the fineness of GG30 materials, even for long overhangs, interrupted cutting and uneven margins.
Self-tapping thread inserts in steel stainless and carbon steel are screwed into preformed or predrilled holes and cut their own threads into the wall for permanent installation. Eliminates the time and expense of tapping. Provides a strong wear and vibration resistant thread.
Stainless Steel Insert,Screw Locking Thread Inserts,Stainless Steel Threaded Inserts,Stainless Steel Keylocking Threaded Inserts
Shenyang Liming Mechanical Component Factory , https://www.helisert.com