GB611466A - Improvements relating to powder metallurgical processes - Google Patents

Improvements relating to powder metallurgical processes

Info

Publication number
GB611466A
GB611466A GB1315946A GB1315946A GB611466A GB 611466 A GB611466 A GB 611466A GB 1315946 A GB1315946 A GB 1315946A GB 1315946 A GB1315946 A GB 1315946A GB 611466 A GB611466 A GB 611466A
Authority
GB
United Kingdom
Prior art keywords
cadmium
powder
wires
turbine blades
former
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
GB1315946A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1315946A priority Critical patent/GB611466A/en
Publication of GB611466A publication Critical patent/GB611466A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

611,466. Making turbine blades; powder metallurgy. GENERAL ELECTRIC CO., Ltd., and JENKINS, I. May 1, 1946, No. 13159. [Classes 83 (ii) and 83 (iv)] In a method of forming ducts, holes or voids in a body of sintered metal powder, particularly cooling ducts of very fine bore in gas-turbine blades, suitably shaped formers at least partly metallic, are introduced into the powder before the final sintering process, the formers being composed of, or convertible into a material fusible at a temperature lower than the final sintering temperature. In particular applications, pure tin wires of 0.015 in. diameter and 4 in. long were pressed in molybdenum in a mould 4 in. by # in. under 35 tons per sq. in. pressure to produce a bar approximately <SP>5</SP>/ 16 in. thick, the bar then being heated in a hydrogen atmosphere to above the fusing point of the tin. Cadmium wires of a similar size were pressed into a compacted bar of an alloy of mainly chromium and cobalt, the compact being held at the temperature of the boiling point of cadmium for some hours in a hydrogen atmosphere before the final sintering process. The choice of former material is governed by the conditions of heat treatment and composition of the main body, cadmium being stated to be suitable when heat treatment takes place in an oxidising atmosphere. The former may be of complicated shape and either solid or hollow. In addition to tin and cadmium, zinc or indium may be used for the former. In the manufacture of ducted gas-turbine blades in accordance with the invention, a number of wires of, for example, cadmium would be disposed in the powder body running longitudinally along the blade. Specifications 452,503, [Group II], and 573,740 are referred to.
GB1315946A 1946-05-01 1946-05-01 Improvements relating to powder metallurgical processes Expired GB611466A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1315946A GB611466A (en) 1946-05-01 1946-05-01 Improvements relating to powder metallurgical processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1315946A GB611466A (en) 1946-05-01 1946-05-01 Improvements relating to powder metallurgical processes

Publications (1)

Publication Number Publication Date
GB611466A true GB611466A (en) 1948-10-29

Family

ID=10017945

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1315946A Expired GB611466A (en) 1946-05-01 1946-05-01 Improvements relating to powder metallurgical processes

Country Status (1)

Country Link
GB (1) GB611466A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2628166A (en) * 1949-02-28 1953-02-10 Haller John Process of making chambered articles containing a movable element
US2685507A (en) * 1949-03-18 1954-08-03 Michigan Powdered Metal Produc Process of making porous chambered bearing
US2695231A (en) * 1949-04-16 1954-11-23 Michigan Powdered Metal Produc Process of making fluid-permeable article
US2695230A (en) * 1949-01-10 1954-11-23 Michigan Powdered Metal Produc Process of making powdered metal article
US2706693A (en) * 1951-02-10 1955-04-19 Allied Prod Corp Process of impregnating metal bearings
US2737456A (en) * 1951-02-09 1956-03-06 Allied Prod Corp Process of making powdered metal articles without briquetting
US2751293A (en) * 1951-07-31 1956-06-19 Allied Prod Corp Process of making perforated powdered metal article
US2803046A (en) * 1952-08-08 1957-08-20 Joseph B Brennan Apparatus for making articles from powdered metal briquets
DE1091409B (en) * 1955-05-31 1960-10-20 Birmingham Small Arms Co Ltd Method and device for the production of powder metallurgical objects provided with channels

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695230A (en) * 1949-01-10 1954-11-23 Michigan Powdered Metal Produc Process of making powdered metal article
US2628166A (en) * 1949-02-28 1953-02-10 Haller John Process of making chambered articles containing a movable element
US2685507A (en) * 1949-03-18 1954-08-03 Michigan Powdered Metal Produc Process of making porous chambered bearing
US2695231A (en) * 1949-04-16 1954-11-23 Michigan Powdered Metal Produc Process of making fluid-permeable article
US2737456A (en) * 1951-02-09 1956-03-06 Allied Prod Corp Process of making powdered metal articles without briquetting
US2706693A (en) * 1951-02-10 1955-04-19 Allied Prod Corp Process of impregnating metal bearings
US2751293A (en) * 1951-07-31 1956-06-19 Allied Prod Corp Process of making perforated powdered metal article
US2803046A (en) * 1952-08-08 1957-08-20 Joseph B Brennan Apparatus for making articles from powdered metal briquets
DE1091409B (en) * 1955-05-31 1960-10-20 Birmingham Small Arms Co Ltd Method and device for the production of powder metallurgical objects provided with channels

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