Taegutec coated inserts raise turning output

For high-speed machining of steel, Taegutec has developed its Alpha-AL CVD coated inserts for external and face turning.

Available in Taegutec's TT8115 and TT8125 grades, the Alpha-AL has been designed for high speed and high feed interrupted and continuous turning applications for steel.

With its wear resistance and toughness, the Alpha-AL is suited to mass production operations in the automotive and heavy industry sectors, offering an extended tool life.

The Alpha-AL design is aimed at delivering consistent performance when conducting long batch runs.

The inserts are suited to a diverse range of applications.

The TT8115 grade is applicable to high-speed machining of low-carbon steel and low-carbon alloy steels at feeds of 300 to 800m/min, with carbon steel and alloy steel having a machining range of 100 to 400m/min.

More applicable to lower speed and higher feed machining, the TT8125 is suitable for machining mild steel, low-carbon steel and low-carbon alloy steel at between 200 and 500m/min.

The TT8125 will replace the current TT3500 grade that is being phased out for the new grade that delivers higher performance across a wider feed and speed range.

For cutting carbon and alloy steel the TT8125 comfortably machines at 100 to 350m/min.

The grade guarantees outstanding tool life and productivity, while feeds and speeds are beyond competitor products, said Taegutec.

WNT diamond inserts feature lasered chipbreakers

WNT is offering a range of diamond-tipped turning inserts with a choice of two precision chipbreaker forms, developed for the high-performance machining of aluminium components.

The range of inserts from WNT (UK) are available in polycrystaline diamond (PCD) in fine and coarse grains sizes as well as synthetic diamond (CVD).

A range of laser machined diamond tipped turning inserts from WNT finely controls swarf when machining aluminium and light alloys.

Swarf can now be finely controlled using either the CB1 or CB2 designated chipbreakers that are lasered into the diamond segment of the insert.

'The fine control that we can now achieve with the laser process allows us to remove micron-thick layers of diamond to achieve extremely precise chipbreaker forms to virtually any shape,' said Tony Pennington, managing director, WNT (UK).

'Being able to control the swarf produced means that productivity can be increased and the finished component is protected against damage caused by swarf nesting,' he added.

The inserts are available in a variety of ISO standard shapes, including CCGT, DCGT, RCGT, SCGT, TCGT and VCGT, and with a selection of corner radii between 0.1mm and 1.2mm.

Combined with the two chipbreaker forms and three grades of diamond, this ensures that the range suits the vast majority of turning operations.

The CB1 chipbreaker style is suitable for finishing and super finishing to a depth of cut between 0.05mm and 1.5mm.

The extremely sharp cutting edge creates the minimum of cutting pressure, which also makes it suitable for machining thin-walled components and unstable workpieces.

For semi-finishing and finishing operations the CB2 geometry features a negative edge preparation, produces high surface quality at depths of cut between 0.5mm and 2mm and operates best on solid workpieces under stable conditions.

The three grades of diamond are PCD, PCD-S and CVD-D.

PCD features a fine grain structure to provide a sharper cutting edge and lower cutting forces, and is designed for fine finishing in materials with low levels of abrasiveness.

PCD-S has a more coarse grain structure and is better suited to cut materials with higher levels of abrasiveness.

The CVD-D grade is aimed at super finishing due to its extremely fine grain structure and its ability to be formed to very close tolerances.

Turning grades machine stainless steel

Taegutec has launched its next-generation TT9200 series of TT-Inox inserts for machining stainless steel.

The company offers three grades to cater for a wide range of speed and feeds for the external and face turning of stainless steel: TT9215, TT9225 and TT9235.

The grades have been designed to cover the full spectrum of speeds and feed for stainless-steel turning while delivering high fracture and wear resistance.

The TT9215 operates at high cutting speeds and is suitable for continuous cutting of stainless steel.

On martensitic and ferritic, austenitic and duplex stainless steel, the TT9215 is capable of machining at cutting speeds of 170-250m/min, 140-220m/min and 130-190m/min respectively.

The TT9225 has been developed for general turning applications on stainless steel.

With its combination of wear and fracture resistance, the grade is more robust than the TT9125.

The TT9225 operates at cutting speeds of 130-220m/min, 110-200m/min and 90-150m/min on martensitic and ferritic, austenitic and duplex steel respectively.

For difficult-to-machine applications and interrupted cutting of stainless steel at low cutting speeds, the TT9235 offers toughness and fracture resistance that guarantees exceptional tool life in the most difficult of applications, said Taegutec.

Suited to cutting in a lower speed range than the TT9215 and TT9225, the TT9235 delivers cutting speeds of 110-170m/min, 90-150m/min and 80-130m/min.

The three grades are available in a diverse range of inserts for all stainless-steel turning needs.