JPS5550964A - Forming method of abrasion-resistant layer - Google Patents

Forming method of abrasion-resistant layer

Info

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
Application number
JP12383078A
Other languages
Japanese (ja)
Inventor
Kunio Kuroda
Hideki Murakami
Shingo Nakasaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP12383078A priority Critical patent/JPS5550964A/en
Publication of JPS5550964A publication Critical patent/JPS5550964A/en
Pending legal-status Critical Current

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
JP12383078A 1978-10-06 1978-10-06 Forming method of abrasion-resistant layer Pending JPS5550964A (en)

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)

* Cited by examiner, † Cited by third party
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
JPS6135460A (en) * 1984-07-28 1986-02-19 Canon Inc Developing method
JPS6135461A (en) * 1984-07-28 1986-02-19 Canon Inc Developing method

Cited By (5)

* Cited by examiner, † Cited by third party
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
JPS6135460A (en) * 1984-07-28 1986-02-19 Canon Inc Developing method
JPS6135461A (en) * 1984-07-28 1986-02-19 Canon Inc Developing method

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