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GB2010153A - Improvements in the manufacture of frogs for rail equipment - Google Patents

Improvements in the manufacture of frogs for rail equipment

Info

Publication number
GB2010153A
GB2010153A GB7847074A GB7847074A GB2010153A GB 2010153 A GB2010153 A GB 2010153A GB 7847074 A GB7847074 A GB 7847074A GB 7847074 A GB7847074 A GB 7847074A GB 2010153 A GB2010153 A GB 2010153A
Authority
GB
United Kingdom
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.)
Granted
Application number
GB7847074A
Other versions
GB2010153B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Creusot Loire SA
Original Assignee
Creusot Loire SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Creusot Loire SA filed Critical Creusot Loire SA
Publication of GB2010153A publication Critical patent/GB2010153A/en
Application granted granted Critical
Publication of GB2010153B publication Critical patent/GB2010153B/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Devices For Molds (AREA)
  • Artificial Fish Reefs (AREA)

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. <IMAGE>
GB7847074A 1977-12-14 1978-12-04 Manufacture of frogs for rail equipment Expired GB2010153B (en)

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 (2)

Publication Number Publication Date
GB2010153A true GB2010153A (en) 1979-06-27
GB2010153B GB2010153B (en) 1982-03-24

Family

ID=9198823

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7847074A Expired GB2010153B (en) 1977-12-14 1978-12-04 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)

Cited By (2)

* Cited by examiner, † Cited by third party
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
WO2015114394A1 (en) * 2014-02-03 2015-08-06 Pálya-Szintvonal Tervezö És Szolgáltató Ktf. Single-piece cast steel frog for a railway crossing

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100335199C (en) * 2004-03-01 2007-09-05 德尔克轨道控股有限公司 Top plate for fastening assembly and manufacturing method thereof
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1566646A (en) * 1968-03-26 1969-05-09

Cited By (2)

* Cited by examiner, † Cited by third party
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
WO2015114394A1 (en) * 2014-02-03 2015-08-06 Pálya-Szintvonal Tervezö És Szolgáltató Ktf. Single-piece cast steel frog for a railway crossing

Also Published As

Publication number Publication date
CH626821A5 (en) 1981-12-15
IT1109711B (en) 1985-12-23
FR2411655B1 (en) 1980-08-22
DE2853821A1 (en) 1979-06-21
FR2411655A1 (en) 1979-07-13
ES475427A1 (en) 1979-04-01
GB2010153B (en) 1982-03-24
DE2853821C2 (en) 1986-07-03
BE872767A (en) 1979-06-14
IT7869762A0 (en) 1978-12-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee