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Solutions for cost-effective, high-quality machining of titanium blisks

​​​ Aerospace Blisk in titanium  

Blisks located on the cold compressor side of the engine are made of titanium, while the hot turbine side requires blisks made of heat resistant super alloys (HRSA).

Key factors to success are:

  • Five-axes machine with good simultaneous dynamics
  • Turbo f​ive-axes​ CAM software
  • Optimized tools and process knowledge for HRSA and titanium

Tooling solutions for aerospace blisks in titanium

CoroMill® Plura solid end mills for high feed side milling

High feed side milling is an effective method for machining challenging materials. ​ Small radial engagement allows for increased cutting speed, feed and cutting depth due to decreased heat, chip thickness and radial forces. CoroMill® Plura HFS for titanium is a unique solution developed for demanding conditions where chip evacuation and temperature control on the cutting zone are critical. It features an exclusive cooling booster with patented coolant flow grooves that are designed to improve the temperature dispersion.

CoroMill® Plura high feed side milling


CoroMill® Plura solid end mills for high feed side milling  

CoroMill® 316 exchangeable milling heads for high feed side milling

CoroMill® 316 is first choice for high feed side milling in titanium alloys when good accessibility is required. It has an optimized core for high stiffness at long overhangs and is excellent in intermediate conditions when good surface quality is needed. Combine with Coromant EH modular system for effectively performed machining with overhangs up to 6xD.

Read more about CoroMill® 316 for high feed side milling

CoroMill® 316 exchangeable milling heads for high feed​ side milling 


Plunge milling of slot with CoroMill® 316 gannet cutter

Machining components with slots and pockets is always challenging. With the CoroMill® 316 gannet cutter available to order off the shelf, manufacturing of small, deep slots and pockets is both time- and cost-efficient. The unique gannet concept is designed exclusively for plunge milling and is ideal when tool diameter is limited and a long overhang is required.

Learn more about CoroMill® 316

Plunge milling of slot with CoroMill® 316 gannet cutter 

Coromant EH modular system

The Coromant EH modular system helps you to achieve the required reach and accessibility with shanks and modular adaptors. The Coromant EH coupling is based on a self-centering screw thread for secure mounting and maximum strength. The coupling has a physical stop which makes it easy to feel when the head is correctly tightened and helps to not overstress the clamping.​

Read more about Coromant EH


Coromant EH modular system for small diameters
 


Semi-​finishing and finishing of the blade

For semi-​finishing of the blade, a point milling approach is recommended due to the double curved surfaces. This machining process provides for controlled stock and scallop height left for the finishing operation.

Method: Point milling, preparing the surface for the finishing operation

Process: Radial cutting depth of 0.5–3 mm (0.020–0.118 inch​) after the roughing operation.​

Continue with point milling due to the double curved surfaces. The recommended solution provides a surface finish down to Ra 0.4 μm (15.75 μin).

Process: Radial cutting depth of 0.2 mm (0.008 inch) after the semi-finishing​ operation.

CoroMill® Plura conical end mill


Semi-​finishing and finishing of the blade
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Drilling with CoroDrill® 860 with -SM geometry

When drilling tough materials such as titanium, many factors need to be taken into account. Process security, repeatability, hole tolerance and quality are critical. Equipped with a robust design, a high-quality edge and a wear-resistant top coating, CoroDrill® 860 with -SM geometry delivers on these key considerations.

Learn more about CoroDrill® 860



CoroDrill® 860


 
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