FIELD: mining.
SUBSTANCE: hard-alloy insert includes a cylindrical liner and a working head with an end face in the form of a semi-toroid. A peculiar feature of the proposed insert is provision on the inner surface of the working head of wedge-shaped projections, the longitudinal symmetry axes of which intersect on the longitudinal axis of the liner. Apexes of wedge-shaped projections in a cross section have a rounded shape.
EFFECT: reducing energy consumption for a rock destruction process and increasing efficiency of a drilling tool.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| HARD-ALLOY INSERT | 2014 |
|
RU2543769C1 |
| DRILL TOOL | 2014 |
|
RU2543766C1 |
| DRILLING BIT ROLLER CUTTER | 2010 |
|
RU2445434C1 |
| DRILLING BIT ROLLING CUTTER | 2011 |
|
RU2452840C1 |
| DRILL BIT | 2016 |
|
RU2606890C1 |
| DRILLING TOOLS | 2015 |
|
RU2576261C1 |
| HARD-ALLOY INSERT | 2016 |
|
RU2624744C1 |
| DRILLING TOOL | 2013 |
|
RU2530034C1 |
| DRILLING BIT | 2016 |
|
RU2615184C1 |
| HARD-ALLOY INSERT | 2016 |
|
RU2620519C1 |
