Complementing the MACH debutants were a multitude of favourites such as the RF100 Sharp, the ever-growing Diver Series of end mills, the RF100 Speed and the impressive RF100 Micro Diver for the rapidly evolving micro-machining sector. As part of the stand at MACH, Guhring also presented its extensive PCD cutting tool portfolio. Concluding on the events at MACH, Chris adds: “The unprecedented level of interest in our standard and special product lines demonstrate that Guhring is not only an industry-leading innovator but also a manufacturer that constantly communicates with the industry to deliver groundbreaking innovations that manufacturers require. We look forward to participating in the next MACH exhibition.”

Sandvik Coromant says the result is an ultrasmooth coating that retards edge build-up and crater wear, and maintains its integrity for long periods of time. Simultaneously, the gold-colored TiN coating remains on flank surfaces and helps to indicate insert-edge wear.

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While turning P25 steel, several types of wear can interact over the life of an insert, and can cause it to fail. The types of wear include flank wear, edge build-up, plastic deformation of cutting edges and cratering.

This through coolant series provides an ultra-smooth Perrox coating that enhances wear protection and an optimised carbide substrate that delivers the perfect balance of hardness and toughness - improving feed rates and tool life by more than 50%.

After the coating process, Sandvik Coromant wet blasts the inserts. The wet blasting removes TiN layers from rake faces, exposes the Al2O3 on the rake faces and polishes those faces while preserving the TiN layer on flank sides.

Sandvik Coromant applies Al2O3, a ceramic coating, over the layer of TiCN to form a heat barrier between chips and the carbide substrate that prevents crater wear and plastic deformation, the two most prevalent causes of insert failure in steel turning. The company then puts a layer of TiN over the Al2O3 for wear identification.

This 3-flute tool was complemented at MACH by the Alu RF100 SkyLiner R for rough machining. The combination blew the crowds away with its high-performance aluminium machining credentials.

Sandvik Coromant says its GC4225 insert grade improves on its previous P25 grades by combining the latest technologies in carbide substrate and coating design. The insert's carbide substrate contains a gradient zone devoid of cubic carbides. Instead, the zone incorporates a tungsten carbide and cobalt binder that makes the insert fracture resistant. However, the insert's cutting edge has a high concentration of cubic carbides that provides the hardness necessary to resist the plastic deformation caused by the extreme temperatures generated in P25 cutting zones.

Also exciting the crowds at MACH was the incredible new SkyLiner series of end mills for rough and finish machining of aluminium and non-ferrous materials. Generating never-before-seen results when pocketing and wall milling, the new Alu RF100 SkyLiner F provides impeccable surface finishes even at the highest feed rates.

At the recent MACH exhibition, cutting tool manufacturer Guhring presented a host of exciting new cutting tool innovations. With a complete range of milling, threading and drilling tools on show, it was the ground-breaking new InoxPro solid carbide drills and the SkyLiner series of end mills that stole the show.

Notably, Sandvik Coromant says it has made a technological leap in the GC4225's coating and in its post treatment. The medium-temperature CVD coating combines TiCN, Al2O3 and TiN. Sandvik Coromant says the TiCN component prevents flank wear and, importantly, serves as the "glue" that adheres the Al2O3 component to the carbide substrate. This is critical because if a coating does not stick to an insert's carbide substrate, the substrate is exposed to the cutting zone causing premature failure.

The ideal wear pattern for any insert, says Tisdall, is controlled flank wear, which results in predictable tool life of cutting edges. He says the GC4225 grade keeps unwanted types of wear from developing rapidly, and in some instances, from developing at all.

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"When using black-colored inserts," says Bill Tisdall, product specialist at Sandvik Coromant, "operators often are unsure as to which insert edges are worn, so they usually change the inserts to be on the safe side, even though there may still be some usable edges."

Commenting upon the Birmingham cutting tool manufacturers’ participation at MACH 2024, Guhring UK’s national sales manager Chris Bush said: “MACH was once again a huge success for Guhring UK. We received a record level of enquiries from manufacturers serious about improving their machining performance and strengthening their supply chain by working with Guhring, a UK manufacturing success story with more than £5m of stock on the shelf and ready for immediate delivery.

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For most shops, ISO P25 is the most difficult metal to cut. Components, operations, materials and machining conditions vary widely in this general turning classification, which can include operations from roughing to finishing of parts that are out-of-round or near-netshaped, cast or forged, unalloyed or high-alloyed materials and with hardnesses ranging from 150 to 350 Brinell.

"Our unprecedented level of high-quality standard product lines available for next-day delivery excited MACH visitors, especially when some of our lines manufactured in the UK include the new Skyliner Series that made such an impact at the show.”

With so many variables affecting cutting tool insert performance, finding one cutting tool grade to handle all the demands of P25 often is impossible. So shops typically switch between different insert grades to cover their own P25 applications, relying on past experience to determine which grade works best for a particular job. Now, Sandvik Coromant (www.sandvik.com) has developed an insert grade that the company says "does it all" for P25 applications and can be used effectively on applications for P20 and P30 grades of steel.

As a world leader, Guhring gave a MACH show premiere to the new RT100 InoxPro range of high-performance solid carbide drills for machining stainless steel and titanium alloys. When machining these challenging materials, tool wear can be detrimental to productivity and performance - the new RT100 InoxPro overcomes these challenges with its new geometry that optimises chip formation.