Glossary: Bite Angle
术语：咬入角
标签：咬入角,摩擦系数,进给,塑性变形
咬入角是板材进入辊缝瞬间，板材表面与辊面接触点处切线和水平线之间的夹角，决定金属能否被辊轮"咬住"送入。咬入角过大时金属打滑无法进给，铜材一般安全咬入角约 3°–6°（摩擦系数 0.1–0.15）。设计中须保证花纹坡度不大于可咬入范围。
The bite angle is the angle between the tangent at the contact point and the horizontal line as the sheet enters the gap; it decides whether the metal is drawn in. Excess angle causes slip; for copper the safe bite angle is about 3°–6° (friction 0.1–0.15). Keep pattern slope within this limit. ---