JPS56121810A - Valve seat insert ring and its manufacturing - Google Patents
Valve seat insert ring and its manufacturingInfo
- Publication number
- JPS56121810A JPS56121810A JP2572280A JP2572280A JPS56121810A JP S56121810 A JPS56121810 A JP S56121810A JP 2572280 A JP2572280 A JP 2572280A JP 2572280 A JP2572280 A JP 2572280A JP S56121810 A JPS56121810 A JP S56121810A
- Authority
- JP
- Japan
- Prior art keywords
- valve seat
- insert ring
- seat insert
- contact
- valve
- 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
- Lift Valve (AREA)
Abstract
PURPOSE: In a valve seat insert ring made of iron-based sintered alloy, to minimize a scraped area on a face in contact with a valve by forging the contact face and the peripheral part so as to make up a low-porosity and high-density body.
CONSTITUTION: This sintered body 31 for a valve seat insert ring is a work whose face in contact with a valve and the peripheral part 34 are turned and forged to gain a low porosity under 5%, for example and a high density. While the rest part free from a compressive forging effect is resintered, a molten copper or copper alloy is penetrated into the part to increase its heat conductivity. To obtain such sintered body 31 for the valve seat insert ring, after a sintered metal R is fixed in a die groove 9 which is formed by a die 2, a lower punch 6 and a core 7 of a rotary forging machine and an upper punch 1 whose end is conical with an included angle θ2 is turned on the core 7 about an axis OA at an inclination angle α to give a compressive forging effect on the part 34.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2572280A JPS56121810A (en) | 1980-03-01 | 1980-03-01 | Valve seat insert ring and its manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2572280A JPS56121810A (en) | 1980-03-01 | 1980-03-01 | Valve seat insert ring and its manufacturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56121810A true JPS56121810A (en) | 1981-09-24 |
Family
ID=12173686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2572280A Pending JPS56121810A (en) | 1980-03-01 | 1980-03-01 | Valve seat insert ring and its manufacturing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56121810A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5877114A (en) * | 1981-10-31 | 1983-05-10 | Nippon Piston Ring Co Ltd | Manufacture of valve seat |
| WO2014006076A1 (en) * | 2012-07-04 | 2014-01-09 | Bleistahl-Produktions Gmbh & Co. Kg | Highly thermally conductive valve seat ring |
| CN108412570A (en) * | 2017-02-09 | 2018-08-17 | 曼柴油机和涡轮机欧洲股份公司 | Seat ring, scavenging air valve and the method for manufacturing seat ring of scavenging air valve |
-
1980
- 1980-03-01 JP JP2572280A patent/JPS56121810A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5877114A (en) * | 1981-10-31 | 1983-05-10 | Nippon Piston Ring Co Ltd | Manufacture of valve seat |
| JPH0457844B2 (en) * | 1981-10-31 | 1992-09-14 | Nippon Piston Ring Co Ltd | |
| WO2014006076A1 (en) * | 2012-07-04 | 2014-01-09 | Bleistahl-Produktions Gmbh & Co. Kg | Highly thermally conductive valve seat ring |
| CN104428500A (en) * | 2012-07-04 | 2015-03-18 | 布莱史塔生产有限两合公司 | Highly thermally conductive valve seat ring |
| US9702277B2 (en) | 2012-07-04 | 2017-07-11 | Bleistahl-Produktions Gmbh & Co. Kg | Highly thermally conductive valve seat ring |
| US10208636B2 (en) | 2012-07-04 | 2019-02-19 | Bleistahl-Produktions GmbH & Co, KG | Highly thermally conductive valve seat ring |
| CN108412570A (en) * | 2017-02-09 | 2018-08-17 | 曼柴油机和涡轮机欧洲股份公司 | Seat ring, scavenging air valve and the method for manufacturing seat ring of scavenging air valve |
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