FR2281185A1 - Wax removal from mould of lost wax casting machine - by irradiation after introduction of matl. with high loss factor - Google Patents

Wax removal from mould of lost wax casting machine - by irradiation after introduction of matl. with high loss factor

Info

Publication number
FR2281185A1
FR2281185A1 FR7427827A FR7427827A FR2281185A1 FR 2281185 A1 FR2281185 A1 FR 2281185A1 FR 7427827 A FR7427827 A FR 7427827A FR 7427827 A FR7427827 A FR 7427827A FR 2281185 A1 FR2281185 A1 FR 2281185A1
Authority
FR
France
Prior art keywords
wax
mould
casting machine
loss factor
high loss
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
FR7427827A
Other languages
French (fr)
Other versions
FR2281185B1 (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.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW Inc
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 TRW Inc filed Critical TRW Inc
Priority to FR7427827A priority Critical patent/FR2281185A1/en
Publication of FR2281185A1 publication Critical patent/FR2281185A1/en
Application granted granted Critical
Publication of FR2281185B1 publication Critical patent/FR2281185B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • B22C9/043—Removing the consumable pattern

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

The wax is molten and removed from the precision mould of a lost wax casting machine by introducing into the structure of the mould a material with a high loss factor (over 1, 0) in the frequency range from 300 to 30,000 MNz (900-2500 MHz). The preferred material is graphite or carbon in the form of a coating. The mould is then irradiated by microwaves of this range until the wax has become liquefied. This is less expensive than using solvents and releases no toxic fumes. It is easier to operate and to include in a flow line production than wet steam heating in an autoclave. The wax is molten on the surface before thermal elongation can crack the ceramic shell. The process is automatic and continuous.
FR7427827A 1974-08-09 1974-08-09 Wax removal from mould of lost wax casting machine - by irradiation after introduction of matl. with high loss factor Granted FR2281185A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7427827A FR2281185A1 (en) 1974-08-09 1974-08-09 Wax removal from mould of lost wax casting machine - by irradiation after introduction of matl. with high loss factor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7427827A FR2281185A1 (en) 1974-08-09 1974-08-09 Wax removal from mould of lost wax casting machine - by irradiation after introduction of matl. with high loss factor

Publications (2)

Publication Number Publication Date
FR2281185A1 true FR2281185A1 (en) 1976-03-05
FR2281185B1 FR2281185B1 (en) 1978-03-31

Family

ID=9142319

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7427827A Granted FR2281185A1 (en) 1974-08-09 1974-08-09 Wax removal from mould of lost wax casting machine - by irradiation after introduction of matl. with high loss factor

Country Status (1)

Country Link
FR (1) FR2281185A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107262671A (en) * 2017-07-01 2017-10-20 连云港源钰金属制品有限公司 Lost wax casting technique dewaxing device and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB819393A (en) * 1957-04-04 1959-09-02 Bristol Aero Engines Ltd Improvements in or relating to moulding processes
US3519517A (en) * 1966-09-30 1970-07-07 Raytheon Co Method of and means for microwave heating of organic materials
FR2184710A1 (en) * 1972-05-15 1973-12-28 Raytheon Co

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB819393A (en) * 1957-04-04 1959-09-02 Bristol Aero Engines Ltd Improvements in or relating to moulding processes
US3519517A (en) * 1966-09-30 1970-07-07 Raytheon Co Method of and means for microwave heating of organic materials
FR2184710A1 (en) * 1972-05-15 1973-12-28 Raytheon Co

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107262671A (en) * 2017-07-01 2017-10-20 连云港源钰金属制品有限公司 Lost wax casting technique dewaxing device and method
CN107262671B (en) * 2017-07-01 2023-06-16 连云港源钰金属制品有限公司 Dewaxing equipment and method for dewaxing casting process

Also Published As

Publication number Publication date
FR2281185B1 (en) 1978-03-31

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Legal Events

Date Code Title Description
ST Notification of lapse