JPS5017353B1 - - Google Patents
Info
- Publication number
- JPS5017353B1 JPS5017353B1 JP46055732A JP5573271A JPS5017353B1 JP S5017353 B1 JPS5017353 B1 JP S5017353B1 JP 46055732 A JP46055732 A JP 46055732A JP 5573271 A JP5573271 A JP 5573271A JP S5017353 B1 JPS5017353 B1 JP S5017353B1
- Authority
- JP
- Japan
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/12—Forming profiles on internal or external surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/06—Manufacture of commutators
- H01R43/08—Manufacture of commutators in which segments are not separated until after assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Forging (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Motor Or Generator Current Collectors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24123/68A GB1274194A (en) | 1968-05-21 | 1968-05-21 | Method of cold forming tubular members with axial passages or channels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5017353B1 true JPS5017353B1 (en) | 1975-06-20 |
Family
ID=10206765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP46055732A Pending JPS5017353B1 (en) | 1968-05-21 | 1971-07-27 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5017353B1 (en) |
| DE (1) | DE1926087B2 (en) |
| FR (1) | FR2009051A1 (en) |
| GB (1) | GB1274194A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108339892A (en) * | 2018-05-05 | 2018-07-31 | 芜湖君如保温材料有限公司 | A kind of water tank template molding die of stainless steel square shape assembled water tank |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2544926B1 (en) * | 1983-04-20 | 1986-05-30 | Jarret Jacques | MAGNETIC RING FOR RECTILINEAR FREE PISTON GENERATORS |
| US6702039B2 (en) | 2001-03-30 | 2004-03-09 | Schlumberger Technology Corporation | Perforating gun carriers and their methods of manufacture |
| CN112517816B (en) * | 2020-10-16 | 2022-04-08 | 中北大学 | Bidirectional intermittent differential upsetting composite extrusion forming method for outer longitudinal rib cylindrical part |
| CN112517658B (en) * | 2020-10-16 | 2022-04-08 | 中北大学 | Bidirectional differential extrusion forming die for external longitudinal rib cylindrical part |
| CN112517657B (en) * | 2020-10-16 | 2022-04-08 | 中北大学 | Bidirectional differential extrusion forming method for outer longitudinal rib cylindrical part |
| CN113909327B (en) * | 2021-09-22 | 2024-05-03 | 中北大学 | Pre-deformation die, pre-deformation method and preparation method of cylindrical part with external longitudinal ribs |
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1968
- 1968-05-21 GB GB24123/68A patent/GB1274194A/en not_active Expired
-
1969
- 1969-05-21 FR FR6916599A patent/FR2009051A1/fr not_active Withdrawn
- 1969-05-21 DE DE19691926087 patent/DE1926087B2/en not_active Withdrawn
-
1971
- 1971-07-27 JP JP46055732A patent/JPS5017353B1/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108339892A (en) * | 2018-05-05 | 2018-07-31 | 芜湖君如保温材料有限公司 | A kind of water tank template molding die of stainless steel square shape assembled water tank |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2009051A1 (en) | 1970-01-30 |
| DE1926087B2 (en) | 1977-10-27 |
| GB1274194A (en) | 1972-05-17 |
| DE1926087A1 (en) | 1969-11-27 |