ES475427A1 - Improvements in the manufacture of frogs for rail equipment - Google Patents
Improvements in the manufacture of frogs for rail equipmentInfo
- Publication number
- ES475427A1 ES475427A1 ES475427A ES475427A ES475427A1 ES 475427 A1 ES475427 A1 ES 475427A1 ES 475427 A ES475427 A ES 475427A ES 475427 A ES475427 A ES 475427A ES 475427 A1 ES475427 A1 ES 475427A1
- Authority
- ES
- Spain
- Prior art keywords
- frog
- core box
- frames
- sand
- frogs
- 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
- 241000269350 Anura Species 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000004576 sand Substances 0.000 abstract 3
- 239000002184 metal Substances 0.000 abstract 2
- 238000005266 casting Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
Abstract
In the casting of a rail frog having lower recesses, a mould cavity for the metal frog is formed by two impressions formed in moulding sand in bottom and top frames 24, 25, the impressions defining the external shape of the frog and the internal shape of the recesses of the frog. The impression of the external shape of the frog is formed by a pattern in the bottom frame 24, a core box 27 defining the lower recesses is then placed in this impression, the core box 27 being in a single piece and having a wall thickness less than the wall thickness of the frog. The core box 27 is filled with sand and the top frame 25 is then placed on the bottom frame 24 and filled with sand. Finally the frames are separated, the core box 27 is removed, and the frames are reassembled and provide the mould cavity for receiving the metal to be cast.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7737616A FR2411655A1 (en) | 1977-12-14 | 1977-12-14 | IMPROVEMENT IN MOLDING OF CROSSING HEARTS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES475427A1 true ES475427A1 (en) | 1979-04-01 |
Family
ID=9198823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES475427A Expired ES475427A1 (en) | 1977-12-14 | 1978-11-27 | Improvements in the manufacture of frogs for rail equipment |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE872767A (en) |
| CH (1) | CH626821A5 (en) |
| DE (1) | DE2853821C2 (en) |
| ES (1) | ES475427A1 (en) |
| FR (1) | FR2411655A1 (en) |
| GB (1) | GB2010153B (en) |
| IT (1) | IT1109711B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0079099A3 (en) * | 1981-11-06 | 1985-08-21 | Etablissements Jadot Frères Société Anonyme | Grooved rail, method of making it and rail apparatus with such a rail |
| US20070001020A1 (en) * | 2004-03-01 | 2007-01-04 | Schonstein Peter J | Manufacture of top plate for an elastomeric rail fastening assembly |
| HUP1400048A2 (en) * | 2014-02-03 | 2015-08-28 | Palya Szintvonal Tervezoe Es Szolgaltato Kft | Common crossing for railroad switch |
| CN106400618B (en) * | 2015-07-27 | 2018-11-23 | 浙江德盛铁路器材股份有限公司 | Dual alloy integrated forged frog and its manufacturing method |
| CN111515341B (en) * | 2020-02-21 | 2023-01-31 | 中铁物总技术有限公司 | Method for improving internal quality of high manganese steel frog and reducing production cost |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1566646A (en) * | 1968-03-26 | 1969-05-09 |
-
1977
- 1977-12-14 FR FR7737616A patent/FR2411655A1/en active Granted
-
1978
- 1978-11-10 CH CH1159778A patent/CH626821A5/fr not_active IP Right Cessation
- 1978-11-27 ES ES475427A patent/ES475427A1/en not_active Expired
- 1978-12-01 IT IT69762/78A patent/IT1109711B/en active
- 1978-12-04 GB GB7847074A patent/GB2010153B/en not_active Expired
- 1978-12-13 DE DE2853821A patent/DE2853821C2/en not_active Expired
- 1978-12-14 BE BE192323A patent/BE872767A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE2853821C2 (en) | 1986-07-03 |
| GB2010153A (en) | 1979-06-27 |
| FR2411655B1 (en) | 1980-08-22 |
| IT7869762A0 (en) | 1978-12-01 |
| BE872767A (en) | 1979-06-14 |
| IT1109711B (en) | 1985-12-23 |
| CH626821A5 (en) | 1981-12-15 |
| DE2853821A1 (en) | 1979-06-21 |
| GB2010153B (en) | 1982-03-24 |
| FR2411655A1 (en) | 1979-07-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19971001 |