GB1456284A - Production of pipe elbows for withstanding high pressure - Google Patents
Production of pipe elbows for withstanding high pressureInfo
- Publication number
- GB1456284A GB1456284A GB3192574A GB3192574A GB1456284A GB 1456284 A GB1456284 A GB 1456284A GB 3192574 A GB3192574 A GB 3192574A GB 3192574 A GB3192574 A GB 3192574A GB 1456284 A GB1456284 A GB 1456284A
- Authority
- GB
- United Kingdom
- Prior art keywords
- section
- cross
- elbow
- oval
- bending
- 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.)
- Expired
Links
Classifications
-
- 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
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/15—Bending tubes using mandrels or the like using filling material of indefinite shape, e.g. sand, plastic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
-
- 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
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/12—Bending tubes using mandrels or the like by pushing over a curved mandrel; by pushing through a curved die
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
1456284 Making pipe elbows KRALOVOPOLSKA STROJIRNA NARODNI PODNIK 18 July 1974 [23 July 1973] 31925/74 Headings B3A and B3E A method of making pipe elbows comprises heating and bending a heated seamless pipe section (6), Fig. 1 (not shown), to obtain a semifinished product 4 having an oval cross-section with its longer axis parallel to the bending axis, filling the semi-finished product with sand and closing its ends with caps 7, heating and bending it to the required radius for the finished elbow while maintaining its cross-section oval, removing the caps and sand, heating the elbow and forming the cross-section to circular shape. The heated pipe sections (6) are placed on a rod (1) of circular cross-section and pushed along the rod to a curved mandrel section (3) of oval cross-section, which forms the semi-finished product 4. The major axis of the oval is about 3%-4% longer than the minor axis. The filled and sealed semi-finished product is placed in a die 8, which has rounded working surfaces 12, and it is forced through the die by a ram 10. Shaped working surfaces 14 on the ram 10 co-operate with the surfaces 12 to maintain the elbow cross-section oval. The heated elbow is brought to a circular cross-section in an hydralic press having a finishing cavity of the final form of the elbow.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS524673A CS171419B1 (en) | 1973-07-23 | 1973-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1456284A true GB1456284A (en) | 1976-11-24 |
Family
ID=5396977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3192574A Expired GB1456284A (en) | 1973-07-23 | 1974-07-18 | Production of pipe elbows for withstanding high pressure |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5071559A (en) |
| CS (1) | CS171419B1 (en) |
| DE (1) | DE2432655A1 (en) |
| FR (1) | FR2245426A1 (en) |
| GB (1) | GB1456284A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436270A (en) * | 2015-12-11 | 2016-03-30 | 北京有色金属研究总院 | Method for machining metal pipe with tapered elbow |
| RU2673695C2 (en) * | 2017-05-03 | 2018-11-29 | Федеральное государственное бюджетное образовательное учреждение высшего образования "ОРЛОВСКИЙ ГОСУДАРСТВЕННЫЙ УНИВЕРСИТЕТ имени И.С. ТУРГЕНЕВА" (ОГУ им. И.С. Тургенева) | Device for bending pipes |
| CN110640400A (en) * | 2019-09-12 | 2020-01-03 | 精达河北机床制造有限公司 | Production equipment and production method of push elbow |
| CN114130873A (en) * | 2021-11-19 | 2022-03-04 | 北京国电富通科技发展有限责任公司 | Forming method of large-diameter thin-wall elbow |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2605795C2 (en) * | 1976-02-13 | 1981-10-08 | Sidro Rohrbogen GmbH, 4980 Bünde | Arrangement for the production of individual pipe bends |
| DE2719353C3 (en) * | 1977-04-30 | 1986-05-07 | Sidro Rohrbogen GmbH, 4980 Bünde | METHOD AND DEVICE FOR PRODUCING ELBOW |
| CN105855344B (en) * | 2015-01-21 | 2019-05-24 | 保隆(安徽)汽车配件有限公司 | The forming method of minor radius bend pipe |
-
1973
- 1973-07-23 CS CS524673A patent/CS171419B1/cs unknown
-
1974
- 1974-07-08 DE DE19742432655 patent/DE2432655A1/en not_active Withdrawn
- 1974-07-17 JP JP8123174A patent/JPS5071559A/ja active Pending
- 1974-07-18 GB GB3192574A patent/GB1456284A/en not_active Expired
- 1974-07-23 FR FR7425575A patent/FR2245426A1/fr not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436270A (en) * | 2015-12-11 | 2016-03-30 | 北京有色金属研究总院 | Method for machining metal pipe with tapered elbow |
| RU2673695C2 (en) * | 2017-05-03 | 2018-11-29 | Федеральное государственное бюджетное образовательное учреждение высшего образования "ОРЛОВСКИЙ ГОСУДАРСТВЕННЫЙ УНИВЕРСИТЕТ имени И.С. ТУРГЕНЕВА" (ОГУ им. И.С. Тургенева) | Device for bending pipes |
| CN110640400A (en) * | 2019-09-12 | 2020-01-03 | 精达河北机床制造有限公司 | Production equipment and production method of push elbow |
| CN110640400B (en) * | 2019-09-12 | 2021-12-07 | 精达河北机床制造有限公司 | Production equipment and production method of push elbow |
| CN114130873A (en) * | 2021-11-19 | 2022-03-04 | 北京国电富通科技发展有限责任公司 | Forming method of large-diameter thin-wall elbow |
Also Published As
| Publication number | Publication date |
|---|---|
| CS171419B1 (en) | 1976-10-29 |
| JPS5071559A (en) | 1975-06-13 |
| DE2432655A1 (en) | 1975-02-13 |
| FR2245426A1 (en) | 1975-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |