JPS5550964A - Forming method of abrasion-resistant layer - Google Patents
Forming method of abrasion-resistant layerInfo
- Publication number
- JPS5550964A JPS5550964A JP12383078A JP12383078A JPS5550964A JP S5550964 A JPS5550964 A JP S5550964A JP 12383078 A JP12383078 A JP 12383078A JP 12383078 A JP12383078 A JP 12383078A JP S5550964 A JPS5550964 A JP S5550964A
- Authority
- JP
- Japan
- Prior art keywords
- portions
- abrasion
- resistant layers
- abrasion resistance
- dies
- 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 selectively form abrasion-resistant layers in the portions requiring abrasion resistance of products by maintaining the temperature of the dies corresponding to said portions higher by 100W150°C than that of other portions at the time of pressure casting light alloy in the product cavity.
CONSTITUTION: A liner 3 is set in the portion of the rocker shaft hole 2 of the rocker arm 1 of the vertically two-split dies by using aluminum alloy for casting and with the temperature of said liner 3 being held higher by 100W150°C than that of other dies, pressure casting is done to form abration-resistant layers of 1.2W1.8mm in thickness in the portions of the rocker shaft hole 2 of the rocker arm 1. Namely, the freezing of the melt in the portions where abrasion resistance is required is intentionally delayed to concentrate the silicon being an solute element of good abrasion resistance in said portions, whereby the abrasion-resistant layers are formed. This method enables the process to be made simpler and the cost lower as compared to conventional methods.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12383078A JPS5550964A (en) | 1978-10-06 | 1978-10-06 | Forming method of abrasion-resistant layer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12383078A JPS5550964A (en) | 1978-10-06 | 1978-10-06 | Forming method of abrasion-resistant layer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5550964A true JPS5550964A (en) | 1980-04-14 |
Family
ID=14870415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12383078A Pending JPS5550964A (en) | 1978-10-06 | 1978-10-06 | Forming method of abrasion-resistant layer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5550964A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60103355A (en) * | 1983-11-11 | 1985-06-07 | Canon Inc | Electrostatic charge image developing toner |
JPS60121455A (en) * | 1983-12-06 | 1985-06-28 | Canon Inc | Electrostatic charge image developing toner |
JPS60121454A (en) * | 1983-12-06 | 1985-06-28 | Canon Inc | Manufacture of electrostatic charge image developing toner |
JPS6135461A (en) * | 1984-07-28 | 1986-02-19 | Canon Inc | Developing method |
JPS6135460A (en) * | 1984-07-28 | 1986-02-19 | Canon Inc | Developing method |
-
1978
- 1978-10-06 JP JP12383078A patent/JPS5550964A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60103355A (en) * | 1983-11-11 | 1985-06-07 | Canon Inc | Electrostatic charge image developing toner |
JPS60121455A (en) * | 1983-12-06 | 1985-06-28 | Canon Inc | Electrostatic charge image developing toner |
JPS60121454A (en) * | 1983-12-06 | 1985-06-28 | Canon Inc | Manufacture of electrostatic charge image developing toner |
JPS6135461A (en) * | 1984-07-28 | 1986-02-19 | Canon Inc | Developing method |
JPS6135460A (en) * | 1984-07-28 | 1986-02-19 | Canon Inc | Developing method |
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