A knurled texture tungsten alloy dart barrel features diamond roller or femtosecond laser pressed/etched regular convex-concave grid or diamond particles, providing highest static friction and dynamic granular feedback. Tungsten alloy hardness ensures ridge sharpness under sweat corrosion and million frictions, binder phase surface dense blocking oxidation. In grip, particles embed fingerprint valleys, pressure points lock grid nodes, dry-hand convex prominent forming mechanical bite, wet-hand grooves guide sweat forming liquid film lubrication, achieving friction self-adaptation. During throw, knurl resistance cues release timing, instant particles release kinetic energy without lag, flight spin preset from texture. Processing from blank surface zoning masking, diamond roller multi-directional pressing forming depth-gradient knurl, laser supplementing micron custom direction, peak DLC coating hardness HV3000+, valley MoS₂ micropores storing lubricant. In application, knurled barrels suit professional dry-hand players and indoor dry environments, front dense particles lock index, mid sparse breathable, rear smooth unload. Internal cavities knurl zone density slightly higher enhancing tactile amplification. Compared to sandblasting, knurl granular stronger suitable blind throw; compared to ring groove, static anti-slip superior. Environmental knurl scraps minimal, laser no chemical waste. Personalization fingerprint scanning reverse knurl spacing, ensuring grip like customized map. This knurled texture defines high-friction ceiling, advancing tactile engineering deep integration.
