Superior cutting tools from Stellram® With Stellram® the Hoffmann Group offers special solutions for the machining of conventional and critical metals INNOVATION Machining ann offm nge eH in th duct ra New p pro Grou

Machining technology Extended Homann Group Logistics Europe's most modern tool logistics centre 99 % ability to supply, 99.9 % delivery accuracy Sales and expertise Over 700 area sales managers Application engineers with high technical competence Leading eBusiness solutions With ATI Stellram® the Homann Group added a powerful manufacturer of cutting tools to its product range. Thanks to their unique know-how in the scope of specialty steels, Stellram® oers you not only high performance tools for hardto-machine materials, but also tools which result in steel machining in considerable productivity...

product range: Now with ATI Stellram® Contents History Stellram® Development & innovations New innovative machining methods Signicant innovationen for machining Critical metals Stainless steels Titanium / titanium alloys Super alloys Products Stellram® Stellram® X-Grade™ Aluminium milling cutter 5720 Contour milling cutter 7700 Stellram® grades overview Contour milling cutter 5500 Roughing ball nose milling cutter 5505 High feed milling cutter 7792 Indexable face mill 7745 VOD Indexable face mill 7745 VSE 90° indexable end mill 7690 VA09 Segmentations Industry-related metals and cutting solutions...

Machining technology Signicant innovations for machining Over the years, Stellram® has developed signicant innovations for machining. Many standard tools we know today can be traced back to developments of this company. 1995 – Octagonal milling inserts Enables more economic face milling operations due to 8 cutting edges. 1984 – Ruthenium grades With the X-Sorten™ Stellram® created grades, which are unparalleled in the machining of hard-to-machine materials. 1976 Invention and patenting of Cermet. 1964 Patenting of positive turning inserts. Exotic alloys – Zirconium, Hafnium, Niobium or Vanadium...

2011 – Homann Group and ATI Stellram® The Homann Group and ATI Stellram® are cooperating. 2 2004/05 – Composite technology Allo Allows, for the rst time, the manufacturing of tools w with dierent, specically brought in carbides. 2003 – Hi feed milling cutter High Due to the development of the e high feed milling cutters, new dimensions in productivity could be opened up. 2002 – Anti-Rotation milling inserts Higher security in milling operations due to anti-twist protection of the inserts. 1987 – Thread milling inserts Enabled the production of threads in a milling process due to helical interpolation....

Machining technology Severe challenges result in a large number of new materials In the past decades, new demands on materials have led to a large number of new materials also in the metal sector. Their processing is still challenging. ATI is dedicated to the further development and processing of these materials. Fibre-reinforced composite Ceramics Inorganic Non-metallic Materials Polymers Blends (polymer compounds) Metals Alloys (metal compounds) Hybrid composite

Mission Critical Metallics Metallics® Nickel materials play today an important role in modern engine construction, especially where highest temperature resistance is essential, e. g. ATI 718 Plus, for compressors and turbines. ATI 625 for exhaust nozzles or for thrust reverser systems. 6 5 o e aust o es o o t ust e e se syste s. VA materials T Today, also special stainless steels are used in the production of engines and turbines. Titanium materials T The company ATI is represented in modern engine construction with a large number of titanium materials today. At the same time, they deliver the...

Machining technology Iron-based alloys with a chromium content of at least 10.5 % are referred to as stainless steel. Generally, it is being dierentiated between four types of stainless steel, depending on their alloy elements and the metal structure: Austenitic, ferritic, martensitic and duplex stainless steel. Alloy elements may be chromium nickel, molybdenum, titanium or niobium. Austenitic stainless steels By adding nickel in a sucient extent, the crystal lattice of the steel structure is converted into a cubic face-centered, which is also known as Austenite. Austenitic stainless steels are...

INNOVATION Chromium __________________________________ Chromium reacts with the atmospheric oxygen and forms a thin chromium oxide layer on the surface. In the case of scratches on the metal surface, a new thin chromium oxide layer is being formed at the damaged area. This is referred to as the material's self regeneration. Martensitic stainless steels Have a similar structure as ferritic stainless steels. Compared to them they have a higher carbon content, causing the martensitic stainless steels to be curable. Depending on the carbon content, martensitic stainless steels can be hardened up...

Machining technology Lightweight material with high strength for lightweight construction In addition to pure titanium, we generally distinguish between three groups of titanium alloys: α (Alpha) titanium alloys β (Beta) titanium alloys α + β titanium alloys Pure titanium Titanium is characterised by a high resistance to a number of oxidising acids. Titanium has a similar strength as aluminium. Due to the high melting point, titanium is well suited to applications where high temperature resistance and an advantageous ratio of strength and weight is required. Pure titanium is often oered to the...

INNOVATION Note __________________________________ Titanium & titanium alloys ________________ In most cases, titanium alloys have a variance in the material characteristics (e. g. aged / not aged), which habe a great inuence on the machinability. For this reason, the data sheet of the material's manufacturer should always be requested. Compared to steel, titanium is characterised by a relatively low density and a high strength in the range of quenched and tempered steels. Due to the low density, titanium is only half the weight. Titanium is also characterised by a high melting point and a good...