JPS55158218A - Production of crankshaft - Google Patents
Production of crankshaftInfo
- Publication number
- JPS55158218A JPS55158218A JP6399579A JP6399579A JPS55158218A JP S55158218 A JPS55158218 A JP S55158218A JP 6399579 A JP6399579 A JP 6399579A JP 6399579 A JP6399579 A JP 6399579A JP S55158218 A JPS55158218 A JP S55158218A
- Authority
- JP
- Japan
- Prior art keywords
- steel material
- crankshaft
- characteristic
- pearlite
- cooling
- 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
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE: To produce the crankshaft which is superior in impact characteristic and fatigue characteristic by molding the steel material containing slight amounts of V and Nb through striking forging at high tempertures then controlling the rate of cooling to make it to the pearlite+ferrite structure deposited with the fine carbides of Nb and V.
CONSTITUTION: Low alloy steel material containing C; 0.30W0.60%, Si; 0.10W 1.50%, Mn; 0.20W2.50% as well as one or two kinds of V<0.50% and Nb< 0.50% is heated at 1,000°C or more to soften the steel material and solid solutionize V and Nb. This is molded to a crankshaft by striking forging and the rate of cooling after this is controlled to 10W100°C/min. to let the fine carbides of V and Nb deposit evenly in the mixed structure of ferrite and pearlite. This method enables the saving of hardening and annealing treatments, reduces the production cost correspondingly and yields the product of superior impact characteristic and fatigue characteristic.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6399579A JPS55158218A (en) | 1979-05-25 | 1979-05-25 | Production of crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6399579A JPS55158218A (en) | 1979-05-25 | 1979-05-25 | Production of crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55158218A true JPS55158218A (en) | 1980-12-09 |
Family
ID=13245353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6399579A Pending JPS55158218A (en) | 1979-05-25 | 1979-05-25 | Production of crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55158218A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02209419A (en) * | 1989-02-10 | 1990-08-20 | Nissan Motor Co Ltd | Apparatus for cooling non-heat-treated steel |
| JPH04210117A (en) * | 1990-11-30 | 1992-07-31 | Toyota Motor Corp | Combination of shaft for internal combustion engine with bearing |
| CN1083491C (en) * | 1998-02-23 | 2002-04-24 | 毛树辉 | Heat treatment technology for 42 Cr-Mo crankshaft |
-
1979
- 1979-05-25 JP JP6399579A patent/JPS55158218A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02209419A (en) * | 1989-02-10 | 1990-08-20 | Nissan Motor Co Ltd | Apparatus for cooling non-heat-treated steel |
| JPH04210117A (en) * | 1990-11-30 | 1992-07-31 | Toyota Motor Corp | Combination of shaft for internal combustion engine with bearing |
| CN1083491C (en) * | 1998-02-23 | 2002-04-24 | 毛树辉 | Heat treatment technology for 42 Cr-Mo crankshaft |
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