JPS57192248A - Bit for excavating stratum - Google Patents
Bit for excavating stratumInfo
- Publication number
- JPS57192248A JPS57192248A JP7762781A JP7762781A JPS57192248A JP S57192248 A JPS57192248 A JP S57192248A JP 7762781 A JP7762781 A JP 7762781A JP 7762781 A JP7762781 A JP 7762781A JP S57192248 A JPS57192248 A JP S57192248A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- added
- toughness
- excavating
- stratum
- 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.)
- Pending
Links
Abstract
PURPOSE: To obtain a bit excellent in the abrasion resistance and impact resistance at the high working temperature for excavating a stratum, by incorporating a required amount of C for obtaining the toughness, and adding Si, Ni, Mo, Mn, Cr, etc. for improving the cementation property.
CONSTITUTION: The bit consists of 0.10W0.50% C, 0.60W1.50% Si, 0.20W0.80% Mn, up to 3.0% Ni, 1.0W5.0% Cr, 0.5W2.0% Mo, 0.1W1.5% V and Fe and unavoidable impurities the balance, and is cemented, hardended and tempered. In addition to the above-mentioned constituents, up to 2.0% Co and/or up to 2.0% w may be added to improve the abrasion resistance, and/or one or more of up to 0.5% Ti, up to 0.5% Nb and up to 0.5% Zr may be added to prevent the toughness from lowering, and/or one or more of up to 0.1% Ca, up to 0.2% Pb, up to 0.1% S and up to 0.1% Te may be added to enhance the machinability. It is desirable that the content of O is limited up to 30ppm.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7762781A JPS57192248A (en) | 1981-05-22 | 1981-05-22 | Bit for excavating stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7762781A JPS57192248A (en) | 1981-05-22 | 1981-05-22 | Bit for excavating stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57192248A true JPS57192248A (en) | 1982-11-26 |
Family
ID=13639139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7762781A Pending JPS57192248A (en) | 1981-05-22 | 1981-05-22 | Bit for excavating stratum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57192248A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621843A (en) * | 1985-06-25 | 1987-01-07 | Nissan Motor Co Ltd | High toughness carburizing steel |
| US4795609A (en) * | 1986-01-21 | 1989-01-03 | Daido Tokushuko Kabushiki Kaisha | High-strength steel for valve springs, process for producing the steel, and valve springs made of the same |
| US5518685A (en) * | 1994-02-03 | 1996-05-21 | Mitsubishi Steel Mfg. Co., Ltd. | Steel for carburized gear |
| WO2009006511A2 (en) * | 2007-07-02 | 2009-01-08 | Baker Hughes Incorporated | Earth boring drill bits made from a low-carbon, high-molybdenum alloy |
| JP2016094636A (en) * | 2014-11-13 | 2016-05-26 | 株式会社小松製作所 | Steel for chisel and chisel |
| JP2019157275A (en) * | 2019-04-04 | 2019-09-19 | 株式会社小松製作所 | Steel for chisel and chisel |
-
1981
- 1981-05-22 JP JP7762781A patent/JPS57192248A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621843A (en) * | 1985-06-25 | 1987-01-07 | Nissan Motor Co Ltd | High toughness carburizing steel |
| US4795609A (en) * | 1986-01-21 | 1989-01-03 | Daido Tokushuko Kabushiki Kaisha | High-strength steel for valve springs, process for producing the steel, and valve springs made of the same |
| US5518685A (en) * | 1994-02-03 | 1996-05-21 | Mitsubishi Steel Mfg. Co., Ltd. | Steel for carburized gear |
| WO2009006511A2 (en) * | 2007-07-02 | 2009-01-08 | Baker Hughes Incorporated | Earth boring drill bits made from a low-carbon, high-molybdenum alloy |
| WO2009006511A3 (en) * | 2007-07-02 | 2009-07-09 | Baker Hughes Inc | Earth boring drill bits made from a low-carbon, high-molybdenum alloy |
| US7905301B2 (en) | 2007-07-02 | 2011-03-15 | Baker Hughes Incorporated | Earth boring drill bits made from a low-carbon, high-molybdenum alloy |
| JP2016094636A (en) * | 2014-11-13 | 2016-05-26 | 株式会社小松製作所 | Steel for chisel and chisel |
| JP2019157275A (en) * | 2019-04-04 | 2019-09-19 | 株式会社小松製作所 | Steel for chisel and chisel |
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