JPS6456852A - Piston material for rotary compressor and its production - Google Patents
Piston material for rotary compressor and its productionInfo
- Publication number
- JPS6456852A JPS6456852A JP21464187A JP21464187A JPS6456852A JP S6456852 A JPS6456852 A JP S6456852A JP 21464187 A JP21464187 A JP 21464187A JP 21464187 A JP21464187 A JP 21464187A JP S6456852 A JPS6456852 A JP S6456852A
- Authority
- JP
- Japan
- Prior art keywords
- piston material
- pipe
- rotary compressor
- cast iron
- ductile cast
- 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
- Compressor (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
PURPOSE:To form a structure into bainite and to manufacture a high-hardness piston material, by subjecting a continuously cast pipe of ductile cast iron to hardening treatment directly after casting and successively to austempering treatment at the time of manufacturing piston material for rotary compressor. CONSTITUTION:Molten ductile cast iron is cast continuously into a long-size pipe, and the resulting ductile cast iron pipe of >=900 deg.C directly after casting is subjected to hardening treatment by means of rapid cooling such as water cooling. Successively, this pipe is immersed into a hot bath of 300 deg.C, at and above the Ms point, and austempered to form the structure into bainite, and then cooled down to room temp. By this method, the piston material for rotary compressor having 40-58 Rockwell hardness HRC can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21464187A JPS6456852A (en) | 1987-08-28 | 1987-08-28 | Piston material for rotary compressor and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21464187A JPS6456852A (en) | 1987-08-28 | 1987-08-28 | Piston material for rotary compressor and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6456852A true JPS6456852A (en) | 1989-03-03 |
Family
ID=16659113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21464187A Pending JPS6456852A (en) | 1987-08-28 | 1987-08-28 | Piston material for rotary compressor and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6456852A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021021359A (en) * | 2019-07-26 | 2021-02-18 | 東芝キヤリア株式会社 | Rotary compressor and refrigeration cycle device |
-
1987
- 1987-08-28 JP JP21464187A patent/JPS6456852A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021021359A (en) * | 2019-07-26 | 2021-02-18 | 東芝キヤリア株式会社 | Rotary compressor and refrigeration cycle device |
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