JPS55130321A - Manufacture of drawn steel material - Google Patents
Manufacture of drawn steel materialInfo
- Publication number
- JPS55130321A JPS55130321A JP3823179A JP3823179A JPS55130321A JP S55130321 A JPS55130321 A JP S55130321A JP 3823179 A JP3823179 A JP 3823179A JP 3823179 A JP3823179 A JP 3823179A JP S55130321 A JPS55130321 A JP S55130321A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- steel
- steel material
- recarburizing
- methanol
- 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.)
- Granted
Links
Abstract
PURPOSE: To omit the conventional removing work for the decarburized layer, and to improve the workability, by recarburizing the decarburized layer of the hot rolled steel material and the extruded steel shape according to the gas carburizing method, and then, by drawing these steel materials.
CONSTITUTION: The surface scale, of the hot rolled steel material and the hot extruded steel shape comprising the carbon steel or the alloy steel, is removed first of all. This steel material is put in the recarburizing furnace and the inside of the furnace is evacuated to vacuum, and is sealed with nitrogen; after that, the inner temperature of the furnace is raised. The methanol of weak carburizing power is dropped into the furnace; while the CO2% is analyzed by the infrared analyzer/ controller taking the methanol as the carrier gas, the propane gas is introduced into the furnace to control the CO2% and CO% to desired values. Hereupon, the operation is performed under the specified heat cycle and the specified furnace pressure. That is, in the part A the heating is applied, in the part B the recarburization is processed, in the part CWG the annealing is processed, and in the part H the cooling is applied finishing the recarburization treatment.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3823179A JPS55130321A (en) | 1979-03-30 | 1979-03-30 | Manufacture of drawn steel material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3823179A JPS55130321A (en) | 1979-03-30 | 1979-03-30 | Manufacture of drawn steel material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55130321A true JPS55130321A (en) | 1980-10-09 |
| JPS6247605B2 JPS6247605B2 (en) | 1987-10-08 |
Family
ID=12519522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3823179A Granted JPS55130321A (en) | 1979-03-30 | 1979-03-30 | Manufacture of drawn steel material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55130321A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100357974B1 (en) * | 2000-11-21 | 2002-10-25 | 허정훈 | manufacturing method of linear rail bar by carbon restoration |
| JP2007297672A (en) * | 2006-04-28 | 2007-11-15 | Ntn Corp | Method for manufacturing rolling parts, and bearing ring and bearing |
-
1979
- 1979-03-30 JP JP3823179A patent/JPS55130321A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100357974B1 (en) * | 2000-11-21 | 2002-10-25 | 허정훈 | manufacturing method of linear rail bar by carbon restoration |
| JP2007297672A (en) * | 2006-04-28 | 2007-11-15 | Ntn Corp | Method for manufacturing rolling parts, and bearing ring and bearing |
| JP4712603B2 (en) * | 2006-04-28 | 2011-06-29 | Ｎｔｎ株式会社 | Rolling part manufacturing method, race ring and bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6247605B2 (en) | 1987-10-08 |
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