JPS628595B2 - - Google Patents
Info
- Publication number
- JPS628595B2 JPS628595B2 JP55139554A JP13955480A JPS628595B2 JP S628595 B2 JPS628595 B2 JP S628595B2 JP 55139554 A JP55139554 A JP 55139554A JP 13955480 A JP13955480 A JP 13955480A JP S628595 B2 JPS628595 B2 JP S628595B2
- Authority
- JP
- Japan
- Prior art keywords
- hardened layer
- threaded
- male
- threaded portion
- female
- 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
- 238000003466 welding Methods 0.000 claims description 9
- 238000009792 diffusion process Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- 239000000047 product Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000005553 drilling Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000006698 induction Effects 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005121 nitriding Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 229910052612 amphibole Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13955480A JPS5766290A (en) | 1980-10-06 | 1980-10-06 | Screw reinforced boring rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13955480A JPS5766290A (en) | 1980-10-06 | 1980-10-06 | Screw reinforced boring rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5766290A JPS5766290A (en) | 1982-04-22 |
| JPS628595B2 true JPS628595B2 (sv) | 1987-02-24 |
Family
ID=15247962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13955480A Granted JPS5766290A (en) | 1980-10-06 | 1980-10-06 | Screw reinforced boring rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5766290A (sv) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5252982U (sv) * | 1975-10-15 | 1977-04-15 | ||
| JPS53132447A (en) * | 1977-04-25 | 1978-11-18 | Hughes Tool Co | Tool joint subject to surface hardening that has smooth surface |
-
1980
- 1980-10-06 JP JP13955480A patent/JPS5766290A/ja active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5252982U (sv) * | 1975-10-15 | 1977-04-15 | ||
| JPS53132447A (en) * | 1977-04-25 | 1978-11-18 | Hughes Tool Co | Tool joint subject to surface hardening that has smooth surface |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5766290A (en) | 1982-04-22 |
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