one for c f Milling method and device for /sic composite material

Abstract

The invention discloses a method for C f / SiC composite material milling processing method, using a strip laser to focus on the surface to be processed, and passing oxygen to the workpiece to be processed, so that the workpiece to be processed is in an oxygen-enriched environment, and a metamorphic layer is formed in the irradiated area of ​​the workpiece to be processed. The layer includes an oxide layer and a transition layer, and the milling cutter moves with the laser to remove the oxide layer. The present invention also provides a method for C f / SiC composite material milling processing device, including workbench, air pipe, laser light source, beam expander, fiber coupling components, beam shaping lens, the laser beam is shaped into a strip laser beam by the beam shaping lens, through the laser and oxygen The coupling effect causes a rapid and controllable oxidation reaction on the workpiece to be processed, forming a loose and easy-to-remove oxide layer under appropriate process parameters, reducing the cutting load, prolonging the tool life, and improving processing efficiency; the bar-shaped laser scanning area is large, and the same Within a short time, a larger area can be oxidized and the processing efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of carbon fiber reinforced composite materials processing, in particular to a f / SiC composite material milling method and device. Background technique [0002] Carbon fiber reinforced silicon carbide matrix composites (C f / SiC composite material) is currently one of the most potential new high-temperature structural materials for thermal protection components, thermal structural parts, high-temperature connectors and wear-resistant parts of aerospace high-end equipment. Although most current C f / SiC composite components are formed in near-net dimensions, but for components with complex shapes and surfaces, it is difficult to meet the requirements of surface quality and dimensional shape accuracy in pre-forming. It can be seen that machining is still the most important way to achieve C f An effective means for synergistic control of the shape and properties of SiC / SiC composite components. [0003] Ho...

AI Technical Summary

Problems solved by technology

The existing cemented carbide milling cutters already have high rigidity and hardness. If the cutter is made of diamond or ceramic materials, the cost of the cutter will increase and the reliability of the cutter will decrease. Therefore, the rigidity and hardness of the milling cutter can be improved by changing the cutter material. The way ability is also limited

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