GB1473980A - Method for treating superalloy castings - Google Patents

Method for treating superalloy castings

Info

Publication number
GB1473980A
GB1473980A GB2671375A GB2671375A GB1473980A GB 1473980 A GB1473980 A GB 1473980A GB 2671375 A GB2671375 A GB 2671375A GB 2671375 A GB2671375 A GB 2671375A GB 1473980 A GB1473980 A GB 1473980A
Authority
GB
United Kingdom
Prior art keywords
castings
mould
temperature
cobalt
treating
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
GB2671375A
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.)
Howmet Corp
Original Assignee
Howmet Corp
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 Howmet Corp filed Critical Howmet Corp
Publication of GB1473980A publication Critical patent/GB1473980A/en
Expired 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
    • B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • B22D31/002—Cleaning, working on castings
    • B22D31/005—Sealing or impregnating porous castings
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Heat Treatment Of Nonferrous Metals Or Alloys (AREA)

Abstract

1473980 Treating castings HOWMET CORP 24 June 1975 3 July 1974] 26713/75 Heading B3F Superalloy castings such as turbine blades or vanes, or wheels, having internal voids are treated by heating, without any surface finishing operation, to a temperature allowing interdiffusion of the metal and subjecting the castings to a gaseous atmosphere of more than 10,000 psi, i.e. hot isostatic pressing. The gas is preferably Ar, but air can be used if the castings are first packed in a container, preferably together with a filler. The temperature is preferably below the solidus temperature. Gates and runners, cores and portions of the mould may be left in place during treatment. To achieve a casting as free as possible of surface voids, (i.e. by more rapid freezing), the mould may be preheated to a lower than normal temperature, or nucleants may be provided on the mould surface, e.g. cobalt oxide, cobalt aluminate, cobalt silicate. Examples are given of suitable Co and Ni based superalloys.
GB2671375A 1974-07-03 1975-06-24 Method for treating superalloy castings Expired GB1473980A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48549674A 1974-07-03 1974-07-03

Publications (1)

Publication Number Publication Date
GB1473980A true GB1473980A (en) 1977-05-18

Family

ID=23928396

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2671375A Expired GB1473980A (en) 1974-07-03 1975-06-24 Method for treating superalloy castings

Country Status (9)

Country Link
JP (1) JPS5129321A (en)
BE (1) BE830927A (en)
CA (1) CA1040515A (en)
CH (1) CH606468A5 (en)
DE (1) DE2529231A1 (en)
FR (1) FR2277157A1 (en)
GB (1) GB1473980A (en)
IT (1) IT1039529B (en)
SE (1) SE422337B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2939634A1 (en) * 1979-01-02 1980-07-10 Gen Electric METHOD FOR COMPRESSING A METAL CASTING PART IN HEAT AND UNDER ISOSTATIC PRESSURE
GB2245207A (en) * 1990-03-30 1992-01-02 Gen Electric Process for identification evaluation and removal of microshrinkage.
CN109396438A (en) * 2018-12-19 2019-03-01 江苏集萃先进金属材料研究所有限公司 A kind of the hot isostatic pressing size control device and method of blade of aviation engine casting
CN114150130A (en) * 2021-12-01 2022-03-08 宁波江丰热等静压技术有限公司 Heat treatment method and application of plate for hot isostatic pressing lifting tool

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA762776B (en) * 1975-06-16 1977-04-27 Cabot Corp Method of salvaging and restoring useful properties to used and retired metal articles
GB2048146B (en) * 1979-04-25 1982-12-15 Us Energy Process for treating weldments
JPS57146501A (en) * 1981-03-06 1982-09-10 Kobashi Kogyo Kk Deep rotary tilling device
US4662951A (en) * 1983-12-27 1987-05-05 United Technologies Corporation Pre-HIP heat treatment of superalloy castings

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2939634A1 (en) * 1979-01-02 1980-07-10 Gen Electric METHOD FOR COMPRESSING A METAL CASTING PART IN HEAT AND UNDER ISOSTATIC PRESSURE
GB2245207A (en) * 1990-03-30 1992-01-02 Gen Electric Process for identification evaluation and removal of microshrinkage.
CN109396438A (en) * 2018-12-19 2019-03-01 江苏集萃先进金属材料研究所有限公司 A kind of the hot isostatic pressing size control device and method of blade of aviation engine casting
CN109396438B (en) * 2018-12-19 2023-05-30 江苏集萃先进金属材料研究所有限公司 Hot isostatic pressing size control device and method for aero-engine blade castings
CN114150130A (en) * 2021-12-01 2022-03-08 宁波江丰热等静压技术有限公司 Heat treatment method and application of plate for hot isostatic pressing lifting tool
CN114150130B (en) * 2021-12-01 2023-09-08 宁波江丰热等静压技术有限公司 Heat treatment method and application of plate for hot isostatic pressing lifting appliance

Also Published As

Publication number Publication date
CA1040515A (en) 1978-10-17
BE830927A (en) 1975-11-03
SE422337B (en) 1982-03-01
IT1039529B (en) 1979-12-10
SE7507618L (en) 1976-01-05
DE2529231A1 (en) 1976-01-15
CH606468A5 (en) 1978-10-31
JPS5129321A (en) 1976-03-12
FR2277157B1 (en) 1978-10-27
FR2277157A1 (en) 1976-01-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee