NL6709936A - - Google Patents
Info
- Publication number
- NL6709936A NL6709936A NL6709936A NL6709936A NL6709936A NL 6709936 A NL6709936 A NL 6709936A NL 6709936 A NL6709936 A NL 6709936A NL 6709936 A NL6709936 A NL 6709936A NL 6709936 A NL6709936 A NL 6709936A
- Authority
- NL
- Netherlands
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
- B21C37/26—Making finned or ribbed tubes by fixing strip or like material to tubes helically-ribbed tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/04—Centering the work; Positioning the tools
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- 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
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
- F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Milling Processes (AREA)
- Shearing Machines (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR103504A FR1520065A (fr) | 1967-04-20 | 1967-04-20 | Procédé et appareillage pour créneler un ruban métallique destiné à être enroulé en hélice autour d'un tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6709936A true NL6709936A (da) | 1968-10-21 |
Family
ID=8629286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6709936A NL6709936A (da) | 1967-04-20 | 1967-07-18 |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE700764A (da) |
| CH (1) | CH473621A (da) |
| ES (2) | ES342724A1 (da) |
| FR (1) | FR1520065A (da) |
| GB (1) | GB1181128A (da) |
| LU (1) | LU54031A1 (da) |
| NL (1) | NL6709936A (da) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2215276B1 (da) * | 1973-01-30 | 1975-10-31 | Mazaleyrat Jacques | |
| IT1121364B (it) * | 1978-06-15 | 1986-04-02 | Schuler Gmbh L | Utensile tranciatore |
| CN103639264A (zh) * | 2013-11-26 | 2014-03-19 | 长沙仙达实业有限公司 | 冲缺冲模及冲削加工方法 |
-
1967
- 1967-04-20 FR FR103504A patent/FR1520065A/fr not_active Expired
- 1967-06-30 BE BE700764D patent/BE700764A/xx unknown
- 1967-07-04 GB GB3076467A patent/GB1181128A/en not_active Expired
- 1967-07-05 LU LU54031D patent/LU54031A1/xx unknown
- 1967-07-06 ES ES342724A patent/ES342724A1/es not_active Expired
- 1967-07-11 CH CH997567A patent/CH473621A/fr not_active IP Right Cessation
- 1967-07-18 NL NL6709936A patent/NL6709936A/xx unknown
-
1968
- 1968-08-01 ES ES356768A patent/ES356768A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| LU54031A1 (da) | 1967-09-05 |
| CH473621A (fr) | 1969-06-15 |
| FR1520065A (fr) | 1968-04-05 |
| BE700764A (da) | 1967-12-01 |
| ES342724A1 (es) | 1968-12-16 |
| ES356768A1 (es) | 1970-02-01 |
| GB1181128A (en) | 1970-02-11 |