JPS6421035A - Production of parts of electronically controlled fuel injection device - Google Patents
Production of parts of electronically controlled fuel injection deviceInfo
- Publication number
- JPS6421035A JPS6421035A JP17937987A JP17937987A JPS6421035A JP S6421035 A JPS6421035 A JP S6421035A JP 17937987 A JP17937987 A JP 17937987A JP 17937987 A JP17937987 A JP 17937987A JP S6421035 A JPS6421035 A JP S6421035A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- powder
- stainless steel
- fuel injection
- injection device
- 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
- Powder Metallurgy (AREA)
Abstract
PURPOSE:To easily produce an electronically controlled fuel injection device consisting of a martensitic stainless steel having excellent corrosion resistance and wear resistance by mixing a specific ratio of graphite powder with powder of a ferritic stainless steel and molding the mixture under pressurization, then subjecting the molding to sintering, hardening and tempering. CONSTITUTION:The graphite powder is mixed at 0.5-2.0wt.% with the powder of the ferritic stainless steel which contains <0.12wt.% C and 12-25wt.% Cr, is mild, allows cold compression molding and is usable as a raw material for powder metallurgy and if necessary, a small amt. of zinc stearate is added and mixed as a lubricant to and with the mixture. The mixture is packed into a metallic mold and is molded under the pressurization and thereafter, the molding is sintered at >=1,000 deg.C. The molding is then subjected to an annealing treatment by heating and slow cooling in a vacuum and after the temp. is lowered, the molding is subjected to required machining and in succession, the molding is hardened from about 1,050 deg.C and is then subjected to the tempering treatment at about 200 deg.C in gaseous Ar. The electronically controlled fuel injection device which has the structure of the hard martensitic stainless steel and has the excellent durability such as corrosion resistance and wear resistance is produced by the powder metallurgical method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17937987A JPS6421035A (en) | 1987-07-17 | 1987-07-17 | Production of parts of electronically controlled fuel injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17937987A JPS6421035A (en) | 1987-07-17 | 1987-07-17 | Production of parts of electronically controlled fuel injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6421035A true JPS6421035A (en) | 1989-01-24 |
Family
ID=16064830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17937987A Pending JPS6421035A (en) | 1987-07-17 | 1987-07-17 | Production of parts of electronically controlled fuel injection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6421035A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5492573A (en) * | 1993-04-19 | 1996-02-20 | Hitachi Metals, Ltd. | High-strength stainless steel for use as material of fuel injection nozzle or needle for internal combustion engine, fuel injection nozzle made of the stainless steel |
| CN102672179A (en) * | 2012-06-07 | 2012-09-19 | 太仓市锦立得粉末冶金有限公司 | Production technique of powder metallurgy product |
| CN102672186A (en) * | 2012-06-07 | 2012-09-19 | 太仓市锦立得粉末冶金有限公司 | Manufacturing process for gear ring in powder metallurgy |
-
1987
- 1987-07-17 JP JP17937987A patent/JPS6421035A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5492573A (en) * | 1993-04-19 | 1996-02-20 | Hitachi Metals, Ltd. | High-strength stainless steel for use as material of fuel injection nozzle or needle for internal combustion engine, fuel injection nozzle made of the stainless steel |
| CN102672179A (en) * | 2012-06-07 | 2012-09-19 | 太仓市锦立得粉末冶金有限公司 | Production technique of powder metallurgy product |
| CN102672186A (en) * | 2012-06-07 | 2012-09-19 | 太仓市锦立得粉末冶金有限公司 | Manufacturing process for gear ring in powder metallurgy |
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