GB806479A - Improvements relating to the production of metal articles with holes in them - Google Patents

Improvements relating to the production of metal articles with holes in them

Info

Publication number
GB806479A
GB806479A GB2790756A GB2790756A GB806479A GB 806479 A GB806479 A GB 806479A GB 2790756 A GB2790756 A GB 2790756A GB 2790756 A GB2790756 A GB 2790756A GB 806479 A GB806479 A GB 806479A
Authority
GB
United Kingdom
Prior art keywords
filler
article
iron
solution
attacks
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
GB2790756A
Inventor
Barclay Keegan
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.)
Henry Wiggin and Co Ltd
Original Assignee
Henry Wiggin and 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 Henry Wiggin and Co Ltd filed Critical Henry Wiggin and Co Ltd
Priority to GB2790756A priority Critical patent/GB806479A/en
Priority to CH5005257A priority patent/CH365605A/en
Publication of GB806479A publication Critical patent/GB806479A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K3/00—Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like
    • B21K3/04—Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like blades, e.g. for turbines; Upsetting of blade roots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B22D29/001—Removing cores
    • B22D29/002—Removing cores by leaching, washing or dissolving

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

806,479. Making turbine blades; destructible cones. WIGGIN & CO. Ltd., H. Aug. 22, 1957 [Sept. 12, 1956], No. 27907/56. Classes 83 (2) and 83 (4). An iron-containing filler is removed from a metal article by first acid etching the article for a short time using an aqueous acidic solution which attacks both the article and the filler and then leaching the filler in a solution which attacks the filler solely or preferentially. The invention is concerned in particular with the production of turbine blades having cooling passages by the extrusion of filled billets made from nickel-chromium or nickel-chromiumcobalt base alloys. The filler may be of mild steel, iron-manganese-titanium alloys or sintered composition of iron and magnesia. The short time etching is stated to remove the oxide layer which forms on the filler during working; it is performed by immersing the article in a solution of equal parts of hydrochloric acid and water at boiling point, or at room temperature when combined with an electrolytic treatment. The final leaching is effected by an aqueous solution containing 25 per cent nitric acid and 1 per cent hydrochloric acid. Specific examples are given. Specifications 763,115, [Group II], and 765,199 are referred to.
GB2790756A 1956-09-12 1956-09-12 Improvements relating to the production of metal articles with holes in them Expired GB806479A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2790756A GB806479A (en) 1956-09-12 1956-09-12 Improvements relating to the production of metal articles with holes in them
CH5005257A CH365605A (en) 1956-09-12 1957-09-02 Process for removing an iron-containing core from a metallic article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2790756A GB806479A (en) 1956-09-12 1956-09-12 Improvements relating to the production of metal articles with holes in them

Publications (1)

Publication Number Publication Date
GB806479A true GB806479A (en) 1958-12-23

Family

ID=10267221

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2790756A Expired GB806479A (en) 1956-09-12 1956-09-12 Improvements relating to the production of metal articles with holes in them

Country Status (2)

Country Link
CH (1) CH365605A (en)
GB (1) GB806479A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1710029A2 (en) 2005-04-05 2006-10-11 Rolls-Royce plc Core leaching

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1710029A2 (en) 2005-04-05 2006-10-11 Rolls-Royce plc Core leaching
EP1710029A3 (en) * 2005-04-05 2006-10-18 Rolls-Royce plc Core leaching
US7935295B2 (en) 2005-04-05 2011-05-03 Rolls Royce, Plc Core leaching

Also Published As

Publication number Publication date
CH365605A (en) 1962-11-15

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