GB727264A - Improvements relating to casting by the lost wax process - Google Patents

Improvements relating to casting by the lost wax process

Info

Publication number
GB727264A
GB727264A GB1688652A GB1688652A GB727264A GB 727264 A GB727264 A GB 727264A GB 1688652 A GB1688652 A GB 1688652A GB 1688652 A GB1688652 A GB 1688652A GB 727264 A GB727264 A GB 727264A
Authority
GB
United Kingdom
Prior art keywords
wax
pattern
core
soluble
water
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
Application number
GB1688652A
Inventor
Richard Glyn Nicholas
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co Ltd
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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB1688652A priority Critical patent/GB727264A/en
Publication of GB727264A publication Critical patent/GB727264A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C7/00Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/02Lost patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

The invention, the object of which is to provide easily removable cores for wax patterns for use in precision casting by the lost wax process, consists in forming a wax pattern conforming to the external shape of the article to be cast by investing with wax, known as pattern wax, a core which conforms to the internal shape of the article and is constituted by a wax which is soluble in a medium in which the pattern wax is substantially insoluble, preferably in intimate mixture with a filler such as fine sand, and removing the core from the solidified investment of pattern wax by solvent treatment. One part by weight of polyethylene glycol 1,000, a water-soluble wax with a melting point of 35 DEG -40 DEG C., is melted and into it are thoroughly mixed three parts by weight of crushed firebrick of 60-mesh grain size. The mixture is slowly poured into a core-box which is vibrated until the mixture has set. The core so formed is removed, placed in a die and invested with pattern wax. When the wax pattern has set it is removed from the die and placed in water to dissolve out the soluble core, which may have ports for the solvent. With pattern wax having an injection temperature of 60 DEG -80 DEG C., a suitable temperature for the water is 40 DEG C. Specifications 704,004 and 722,816, [both in Group XXII], are referred to.
GB1688652A 1952-07-04 1952-07-04 Improvements relating to casting by the lost wax process Expired GB727264A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1688652A GB727264A (en) 1952-07-04 1952-07-04 Improvements relating to casting by the lost wax process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1688652A GB727264A (en) 1952-07-04 1952-07-04 Improvements relating to casting by the lost wax process

Publications (1)

Publication Number Publication Date
GB727264A true GB727264A (en) 1955-03-30

Family

ID=10085455

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1688652A Expired GB727264A (en) 1952-07-04 1952-07-04 Improvements relating to casting by the lost wax process

Country Status (1)

Country Link
GB (1) GB727264A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3042982A (en) * 1958-07-07 1962-07-10 Roils Royce Ltd Expendible moulds for patterns in precision casting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3042982A (en) * 1958-07-07 1962-07-10 Roils Royce Ltd Expendible moulds for patterns in precision casting

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