Category Archives: Composite Drilling

Vein technology

We recently welcomed Aaron Howcroft from Precorp to the expert team on the blog. Vein technology is one of Precorp’s premier technologies, and we asked Aaron to tell us a bit more about it. What is polycrystalline diamond (PCD )vein technology? It is the method and ability to make uniquely shaped diamond edges as an…

Beyond the glass transition temperature…

In May, we presented Engineering Doctorate Julian Merino Perez’s work on Taylor curves here in the blog. We recently asked for an update on his findings from the Advanced Manufacturing Research Centre (AMRC) at the University of Sheffield. How does short exposure to high temperatures affect the bore hole? When machining carbon-fiber-reinforced polymer (CFRP) composites, especially when…

Chip control in metallic stack & composite machining

A common challenge that my customers face when machining composite materials in stacks with metallics (especially aluminium alloys) is chip breaking. If it is not taken care of, poor chip breaking will affect the result in the following ways: High workpiece temperature Chips that are not evacuated from a drilled hole will contribute to increased heat…

Preparing for EMO

EMO is coming up fast, and yellow coats of every department, specialty and  expertise are gearing up. Will you be attending? If so, be sure to visit  us in Hall 5, Smart Hub B20. As always, aerospace is an area characterized by innovation and new ideas. The increased use of composite material in the aerospace…

High material removal rates in composites for aerospace

There are a multitude of materials used on modern aircraft, including fiberglass, aluminum, carbon laminate composite, and carbon sandwich composites. While aluminum and new metals can be found in the engine and frame, composite materials can be found in the wings, wing box, fuselage, tail, landing gear – throughout the aircraft. The preponderance of carbon-based…

Milling and drilling of composite materials for the aeronautics

The JEC Composites website features an interesting paper presenting the issues around the milling and drilling of carbon-fibre-reinforced composite panels. The paper includes a reminder of the material’s specific properties, the technical equipment required, the potential conditions, and distinctive features about the way machined surfaces degrade. The text also discuss the use of PCD tools,…

Reduction in dynamic friction in composite material

We got an interesting question from a reader about cutting forces that we want to share. Eleanor Merson, Research & Development Manager at Sandvik Coromant in Sheffield, gives her view on cutting parameters and thrust forces. Question: It has been widely speculated that at higher cutting speeds in drilling of composites, cutting forces are relatively lower…

CFRP edging with MDI technology

A Barcelona-based customer was struggling with edging carbon-fiber-reinforced polymer (CFRP). Even though the customer had tested all available alternatives, they weren’t getting the results they wanted. Finally, the foreman contacted experts at Sandvik Coromant. We had a long discussion about fiber machining and in situ analysis of delamination problems and durability of the edging operation….

European Composite Application Center opens

Sandvik Coromant recently opened the European Application Center for composite machining as a resource for manufacturers looking to optimize the production of composite components. Located in Orléans, France, the new Application Center supports European markets and serves as a specially-manned competence facility for customer projects. It aims to deliver complete processing, programming, testing and machining…

New toy for the Research Center!

A new temperature-measuring infrared camera recently was delivered to the research center in Sheffield, U.K. The camera takes up to 120 images per second and by using it, we can see which parts of the tool that gets hottest. With the results at hand, we can tweak our drill designs and recommended conditions for customers…