GB809004A - Rock drill cutting insert - Google Patents
Rock drill cutting insertInfo
- Publication number
- GB809004A GB809004A GB18405/55A GB1840555A GB809004A GB 809004 A GB809004 A GB 809004A GB 18405/55 A GB18405/55 A GB 18405/55A GB 1840555 A GB1840555 A GB 1840555A GB 809004 A GB809004 A GB 809004A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layers
- grain size
- cutting edge
- fine
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011435 rock Substances 0.000 title abstract 2
- 239000002184 metal Substances 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 3
- 238000005452 bending Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/58—Chisel-type inserts
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
809,004. Percussive drills. SANDVIKENS JERNVERKS A.B. June 24, 1955 [June 28, 1954], No. 18405/55. Drawings to Specification. Class 124. A hard metal rock drill cutting insert has a cutting edge and a substantially plane bottom surface and at least two layers wherein the mean grain size of the particles increases from layer to layer by at least 0À25Á in the direction from the cutting edge to the bottom and the boundaries between the layers as seen in a section containing such boundaries and perpendicular to the longitudinal axis and the bottom are substantially straight and parallel to the bottom surface. The boundary between fine grained and coarse grained layers may be parallel to the bottom or be upwardly convex and the grain size at the cutting edge may be between 1Á and 7u-(0À5 x % bending metal)Á while the grain size in the next adjacent layer may be between 6À5Á -(0À5 x % bondiug metal)Á and 5Á. The layers may merge into one another and the fine grained part may be divided into two or more zones along the length of the insert with coarse grained material between them. The fine and coarse grained material may have the same chemical analysis or the fine grained material may have more bonding metal than the coarse grained.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE809004X | 1954-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB809004A true GB809004A (en) | 1959-02-18 |
Family
ID=20342778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18405/55A Expired GB809004A (en) | 1954-06-28 | 1955-06-24 | Rock drill cutting insert |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB809004A (en) |
-
1955
- 1955-06-24 GB GB18405/55A patent/GB809004A/en not_active Expired
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