Aluminum alloy for fishing gear and preparation technology thereof

The invention discloses aluminum alloy for a fishing gear. The aluminum alloy comprises, by mass (wt%), 6.0%-8.0% of Zn, 1.1%-1.5% of Mg, 1.1%-1.8% of Gu, 1.8%-2.8% of Ti, 0.001%-0.002% of As, 0.45%-0.49% of Se, 0.6%-1.8% of Hf, 0.32%-0.38% of Co, 1.0%-1.2% of Si, 2.3%-2.9% of B, 0.04%-0.08% of Cd, 0.02%-0.06% of Ge, 4%-6% of Fe, 0.1%-0.3% of Zr, 0.1%-0.2% of Er, and the balance aluminum and inevitable impurities. The aluminum alloy has good ductility, the strength is high, deformation caused by slight collision cannot happen easily, and thus the service life of the fishing gear can be prolonged. 种渔具用铝合金，按质量百分数（wt%）计，包括以下组分：Zn6.0～8.0、Mg1.1～1.5、Gu1.1～1.8、Ti1.8～2.8、As0.001～0.002、Se0.45～0.49、Hf0.6～1.8、Co0.32～0.38、Si1.0～1.2、B2.3～2.9、Cd0.04～0.08、Ge0.02～0.06、Fe4～6、Zr0.1～0.3、Er0.1～0.2，余量为铝和不可避免的杂质。该种铝合金不仅具有良好的延展性，并且其强度也比较的大，不容易因为轻微的碰撞而发生形变，从而也就提高了渔具的使用寿命。