| 摘要 |
A diamond single-layer drill bit that includes a body with a matrix divided with washing channels into sectors, and three-dimensional diamonds placed in each sector on the matrix in one layer in radial rows, at that in each sector two radial rows of three-dimensional diamonds are placed, the length of the washing channel is equal to the distance between the rows of the three-dimensional diamonds in the sector, at that the length of the sector is three lengths of the washing channel, and the sum of the lengths of the sector and the washing channel is within 5-5.5 of the diameter of the three-dimensional diamonds. |
