| 摘要 |
A plug (1) for sealing a hole (2) provided in a work piece (3). The plug (1) comprises a front part (4) and a sealing part (5), and the surface hardness of at least the sealing part is greater than the hardness of the work piece (3). The sealing part (5) is conical and has an increasing diameter, in a direction from the front part (4) and the sealing part (5) comprises a cutting thread (6). The profile of the cutting thread (6) comprises a sharp tapered top (7), two adjacent flat flanks (8), and a bottom (9) of the thread (6). The sharp tapered top (7) is formed by the two flanks (8) which meet at a common intersection point. An angle (α, γ) between the flanks (8) is between 110-160° while transitions between the flanks (8) and the bottom (9) are smooth. |
| 主权项 |
1. A plug (1) for sealing a hole (2) provided in a work piece (3), which plug (1) comprises a front part (4) and a sealing part (5), and where a surface hardness, at least of the sealing part (5), exceeds a hardness of the work piece (3),
wherein the sealing part (5) is conical with an increasing diameter in a direction from the front part (4), and the sealing part (5) comprises a cutting thread (6), and a profile of the thread (6) comprises a sharp tapered top (7), two flat flanks (8), and a bottom (9) of the thread (6), and the top (7) is sharp tapered by that the two flanks (8) which meet in a common intersection point—the top (7), and the flanks (8) are flat by that an angle (α, γ) between the flanks (8) is between 110-160°, and transitions between the flanks (8) and the bottom (9) are smooth. |
