FR2010247A1 - Spherical exothermic feed heads for foundry work - Google Patents

Spherical exothermic feed heads for foundry work

Info

Publication number
FR2010247A1
FR2010247A1 FR6917663A FR6917663A FR2010247A1 FR 2010247 A1 FR2010247 A1 FR 2010247A1 FR 6917663 A FR6917663 A FR 6917663A FR 6917663 A FR6917663 A FR 6917663A FR 2010247 A1 FR2010247 A1 FR 2010247A1
Authority
FR
France
Prior art keywords
mixture
exothermic
spherical
feed head
resin
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.)
Withdrawn
Application number
FR6917663A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2010247A1 publication Critical patent/FR2010247A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/088—Feeder heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • B22D7/10—Hot tops therefor
    • B22D7/104—Hot tops therefor from exothermic material only

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

A hollow sphere, with porous walls, is used as an exothermic feed head in metal casting, allowing min. waste of metal and avoidance of voids in the main casting. Feed head is formed by reaction of outer layers of a mixture in a spherical, hot mould, and removal of unreacted inner part of contents. Mixture may comprise silica sand, 100 kg.; resins, 2-21 kg., mineral black, 1-15 kg., exothermic mixture of Fe2O3 and Mg, 2-50 kg.; release agent, calcium stearate, 10-100 g. per kg. resin; catalyst, 350-450 g. of soln. of hexamethylene tetramine per kg. resin. Reaction to form feed head shell occurs in mould preheated to 150-450 degrees C., and may be completed by introducing hot air to residual shell of partly cured resin, etc., mixture. Shell is permeable to air.
FR6917663A 1968-06-06 1969-06-05 Spherical exothermic feed heads for foundry work Withdrawn FR2010247A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU56212 1968-06-06

Publications (1)

Publication Number Publication Date
FR2010247A1 true FR2010247A1 (en) 1970-02-13

Family

ID=19725625

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6917663A Withdrawn FR2010247A1 (en) 1968-06-06 1969-06-05 Spherical exothermic feed heads for foundry work

Country Status (2)

Country Link
FR (1) FR2010247A1 (en)
LU (1) LU56212A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997001406A1 (en) * 1995-06-28 1997-01-16 Chemex Gmbh Feeder for use in casting molten metal
EP0879662A1 (en) * 1997-05-22 1998-11-25 Hatsunen Co., Ltd. Process for producing foundry exothermic body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997001406A1 (en) * 1995-06-28 1997-01-16 Chemex Gmbh Feeder for use in casting molten metal
EP0879662A1 (en) * 1997-05-22 1998-11-25 Hatsunen Co., Ltd. Process for producing foundry exothermic body

Also Published As

Publication number Publication date
LU56212A1 (en) 1970-01-14

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Legal Events

Date Code Title Description
ST Notification of lapse