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FR2352614A2 - Castings possessing zones with different structure and properties - where alloys are added during only part of the pouring cycle - Google Patents

Castings possessing zones with different structure and properties - where alloys are added during only part of the pouring cycle

Info

Publication number
FR2352614A2
FR2352614A2 FR7714978A FR7714978A FR2352614A2 FR 2352614 A2 FR2352614 A2 FR 2352614A2 FR 7714978 A FR7714978 A FR 7714978A FR 7714978 A FR7714978 A FR 7714978A FR 2352614 A2 FR2352614 A2 FR 2352614A2
Authority
FR
France
Prior art keywords
mould
molten metal
pouring
downstick
properties
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
FR7714978A
Other languages
French (fr)
Other versions
FR2352614B2 (en
Inventor
Karl B Rundman
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of FR2352614A2 publication Critical patent/FR2352614A2/en
Application granted granted Critical
Publication of FR2352614B2 publication Critical patent/FR2352614B2/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/007—Treatment of the fused masses in the supply runners

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

The parent specification described the control of the microstructure in specified parts of a casting made by pouring molten metal via a downstick and runner into a mould. In the present invention molten metal is poured into the downstick until a predetermined vol. (V1) has entered the mould cavity. Then a wire consisting of an alloying element or other addn. is fed into the downstick where it melts and mixes with the molten metal which continuous to flow into the mould until a second predetermined vol (V2) has entered the mould cavity. The wire feed is then discontinued and more molten metal is added until the mould is full. At the start of pouring, a time switch is pref. triggered and this timer starts the feeding of the alloy wire when V1 is reached; the timer is pref. triggered by a photoelectric sensor which detects the start of pouring. Alloys etc. are added to castings to produce desired physical or mechanical properties, the invention restricts the addn. of of alloys etc. to those zones of a casting in which the special properties are required.
FR7714978A 1976-05-28 1977-05-16 Castings possessing zones with different structure and properties - where alloys are added during only part of the pouring cycle Granted FR2352614A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69112476A 1976-05-28 1976-05-28

Publications (2)

Publication Number Publication Date
FR2352614A2 true FR2352614A2 (en) 1977-12-23
FR2352614B2 FR2352614B2 (en) 1981-12-04

Family

ID=24775252

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7714978A Granted FR2352614A2 (en) 1976-05-28 1977-05-16 Castings possessing zones with different structure and properties - where alloys are added during only part of the pouring cycle

Country Status (5)

Country Link
JP (1) JPS52145339A (en)
CA (1) CA1072295A (en)
DE (1) DE2719032A1 (en)
FR (1) FR2352614A2 (en)
IT (1) IT1115328B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0127521A1 (en) * 1983-05-30 1984-12-05 Pont-A-Mousson S.A. Process and device for the treatment of a low-pressure cast metal, especially for the inoculation of the melt

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746070A (en) * 1971-06-25 1973-07-17 Nat Steel Corp Method for improving continuously cast strands

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746070A (en) * 1971-06-25 1973-07-17 Nat Steel Corp Method for improving continuously cast strands

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0127521A1 (en) * 1983-05-30 1984-12-05 Pont-A-Mousson S.A. Process and device for the treatment of a low-pressure cast metal, especially for the inoculation of the melt
FR2546783A1 (en) * 1983-05-30 1984-12-07 Pont A Mousson METHOD AND DEVICE FOR TREATING LOW-PRESSURE MOLDED LIQUID METAL, PARTICULARLY FOR INOCULATING CAST IRON

Also Published As

Publication number Publication date
JPS52145339A (en) 1977-12-03
CA1072295A (en) 1980-02-26
IT1115328B (en) 1986-02-03
FR2352614B2 (en) 1981-12-04
DE2719032A1 (en) 1977-12-15

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Legal Events

Date Code Title Description
TP Transmission of property