JPS6129832Y2 - - Google Patents
Info
- Publication number
- JPS6129832Y2 JPS6129832Y2 JP1979065767U JP6576779U JPS6129832Y2 JP S6129832 Y2 JPS6129832 Y2 JP S6129832Y2 JP 1979065767 U JP1979065767 U JP 1979065767U JP 6576779 U JP6576779 U JP 6576779U JP S6129832 Y2 JPS6129832 Y2 JP S6129832Y2
- Authority
- JP
- Japan
- Prior art keywords
- core metal
- bit
- ultra
- section
- rock cutting
- 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
- 229910052751 metal Inorganic materials 0.000 claims description 45
- 239000002184 metal Substances 0.000 claims description 45
- 239000011435 rock Substances 0.000 claims description 11
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 description 10
- 238000009412 basement excavation Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 201000003373 familial cold autoinflammatory syndrome 3 Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979065767U JPS6129832Y2 (es) | 1979-05-18 | 1979-05-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979065767U JPS6129832Y2 (es) | 1979-05-18 | 1979-05-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55168593U JPS55168593U (es) | 1980-12-03 |
| JPS6129832Y2 true JPS6129832Y2 (es) | 1986-09-02 |
Family
ID=29299764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979065767U Expired JPS6129832Y2 (es) | 1979-05-18 | 1979-05-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6129832Y2 (es) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55129586A (en) * | 1979-03-16 | 1980-10-07 | Christensen Inc | Rotary boring bit |
-
1979
- 1979-05-18 JP JP1979065767U patent/JPS6129832Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55129586A (en) * | 1979-03-16 | 1980-10-07 | Christensen Inc | Rotary boring bit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55168593U (es) | 1980-12-03 |
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