In the aerospace industry, the most common composite material is carbon fiber reinforced plastic (CFRP), whose pore quality is usually defined by some limits, often involving the following aspects: dimensional and roundness tolerances, surface roughness and burr formation, straightness and centerline Verticality, barrel and bell mouth. When stacking aluminum alloy or titanium alloy, it is especially important to effectively remove chips through the cutting tool, because metal chips will damage the surface of the composite hole. The challenge is to achieve satisfactory quality consistency while ensuring operator safety, but most importantly, manufacturing costs must be competitive.
Carbon fiber reinforced plastic (CFRP) materials are relatively small in thickness and are often shallow hole processed in woven or unidirectional tape structures. Typical process requirements include a surface roughness value within R a = 4.8 μm, a delamination of no more than 1 mm around the processing aperture, and no cracking. For laminate materials, the surface roughness values ​​are typically required to be a composite layer R a < 3.2 μm and a metal layer R a < 1.6 μm. The hole tolerance range is ±0.02 to 0.04 mm, and the carbon fiber reinforced plastic (CFRP) portion does not allow metal chip erosion marks. Hole tolerances with aperture tolerances less than ±0.025 mm typically require reaming.
Related introduction: Composite materials are mainly used to manufacture aircraft exterior and interior components, including seats, ribs, interior trim, portholes, hoods, wings, fuselage and shrouds. With the application of new materials such as carbon fiber, the manufacturing level of polymer and composite parts is further improved, and the production capacity is also improved. The current aircraft are mainly classified into four categories: commercial aircraft, general aviation aircraft, military aircraft and other aircraft. Commercial aircraft is the largest application area for polymers and composites, accounting for more than 55% of existing applications; second-hand is military aircraft, accounting for 25% of the market.
Europe Type 304 Stainless Steel Casters
Europe Type 304 Stainless Steel Casters
Europe Type 304 Stainless Steel Casters
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