JPS5747847A - Pump lever for pile hammer and its heat treatment - Google Patents
Pump lever for pile hammer and its heat treatmentInfo
- Publication number
- JPS5747847A JPS5747847A JP12235980A JP12235980A JPS5747847A JP S5747847 A JPS5747847 A JP S5747847A JP 12235980 A JP12235980 A JP 12235980A JP 12235980 A JP12235980 A JP 12235980A JP S5747847 A JPS5747847 A JP S5747847A
- Authority
- JP
- Japan
- Prior art keywords
- pile hammer
- heat treatment
- pump lever
- lever
- composition
- 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
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE: To prevent the cracking during use and to enhance the wear resistance by adding a specified amount of C, Si, Mn, Cr, W and V to steel and providing a fine pearlite structure and a specified Vickers hardness.
CONSTITUTION: The composition of a pump lever for a pile hammer is adjusted to, by wt., 0.4W0.55% C, 0.6W1.6% Si, 0.3W0.6% Mn, 1W1.5% Cr, 2W3.5% W, 0.08W0.3% V and the balance Fe with impurities. A lever worked from steel products having the composition is heated to 900W950°C, hardened from the temp., tempered at 450W500°C, and air-cooled to provide a practically fine pearlite structure and 500W560 Vickers hardness.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12235980A JPS5747847A (en) | 1980-09-05 | 1980-09-05 | Pump lever for pile hammer and its heat treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12235980A JPS5747847A (en) | 1980-09-05 | 1980-09-05 | Pump lever for pile hammer and its heat treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5747847A true JPS5747847A (en) | 1982-03-18 |
Family
ID=14833936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12235980A Pending JPS5747847A (en) | 1980-09-05 | 1980-09-05 | Pump lever for pile hammer and its heat treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5747847A (en) |
-
1980
- 1980-09-05 JP JP12235980A patent/JPS5747847A/en active Pending
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