Dormer Pramet has expanded its GL assortment for parting-off and deep grooving applications with a range of tools, double-edged inserts and geometries. The additions provide new tooling options for small part machining and grooving with a shorter overhang. These tools support copy profiling and longitudinal turning in a variety of materials.

The move follows the company’s development of its parting-off and grooving range in November 2019, when Dormer Pramet introduced the 25 mm GL insert and the G8330 PVD grade to provide a versatile and stable option when machining steel, stainless steel and cast iron.

These latest tools include new 12×12 holders to support additional radial operations, accommodating various insert widths and depth-of-cut capabilities. A reinforced brace design provides high rigidity and vibration resistance for good-quality surface finish.
Users can also benefit from set-up time savings due to an easily accessible clamping screw [30° angled] and a one-hand insert replacement feature.

The new Pramet tool holders include the universal GLSF (RL) EXT for an overhang of 24-32 mm and the GLSF (RL) EXT-G for grooving operations with a 10-12 mm overhang. GLSF (RL) EXT-S is the shank tool option and suitable for small parts machining and Swiss lathes. The long GL insert, which achieves 60% deeper capacity over the previous LCMF16 insert, is also now available in two new geometries, GM and MM. Both feature a positive T-land for prolonged tool life due to low cutting forces and reduced risk of built-up edge.

With a round cutting edge, the MM geometry is suitable for turning and copy profiling operations, while the GM geometry is for grooving and longitudinal turning.

For further information
www.dormerpramet.com

Horn has introduced two high-performance coatings, IG6 and SG3, for the carbide inserts it manufactures for turning applications. Despite being less than 0.005 mm thick, such coatings can extend service life by a factor of 10 or more compared with uncoated inserts.

IG6 is a copper-coloured, aluminium-titanium-silicon nitride (AlTiSiN) coating for machining steels in groups P and M with Horn’s S224 and S229 grooving systems. In conjunction with the adapted carbide substrate, the coating allows faster material removal rates and significantly extended service life. Standard inserts are available from stock, while for special designs, Horn Greenline orders can be delivered within five working days of the customer signing off on the drawing.

Horn’s SG3 coating is for machining titanium alloys and superalloys, as well as for hard turning and hard grooving applications, and can withstand temperatures of up to 1100°C. Now that the advantages of the tool coating have been proven on selected Horn tool systems, the 105 Supermini grooving and boring system products are available from stock.

Over the past 15 years, Horn has developed a high level of expertise in the coating of precision tools, starting with five employees and one coating system and growing to over 50 employees working across 14 coating systems. Engineers are constantly researching and developing new and existing coatings with the aim of delivering ever higher performance. Horn continually invests in new, modern technologies. In 2015, CemeCon delivered to Horn the first of three HiPIMS (high power impulse magnetron sputtering) systems, which was the first in the world. The technology enables the formation of coatings that are very dense and compact, as well as extremely hard and tough.

For further information
www.phorn.co.uk