GB557847A - Improvements in and relating to methods for producing high density sintered products - Google Patents

Improvements in and relating to methods for producing high density sintered products

Info

Publication number
GB557847A
GB557847A GB7252/42A GB725242A GB557847A GB 557847 A GB557847 A GB 557847A GB 7252/42 A GB7252/42 A GB 7252/42A GB 725242 A GB725242 A GB 725242A GB 557847 A GB557847 A GB 557847A
Authority
GB
United Kingdom
Prior art keywords
mould
preform
pad
paraffin
rubber
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
GB7252/42A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB557847A publication Critical patent/GB557847A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • 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
    • B22F5/04—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine blades

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Powder Metallurgy (AREA)

Abstract

557,847. Forming coherent masses from powdered metal. BRITISH THOMSONHOUSTON CO., Ltd. May 28, 1942, No. 7252. Convention date, May 29, 1941. [Class 82 (i)] [Also in Groups V and XXIII] Turbine buckets or other bodies of irregular shape are produced by preforming the powdered metal ingredients under pressure, heating the preform in a reducing atmosphere at a temperature sufficiently high to deoxidize the ingredients but insufficient to cause sintering, pressing the preform in a mould having a contour substantially identical with one of the surfaces of the body, said pressure being applied through a rubber of like flexible pad in direct contact with the preform, and finally sintering the moulded body. The powdered metal may be initially mixed with paraffin (to enable the metal to flow easily in the mould), dried, preformed in a mould comprising stationary parts 2, 3 by a movable plunger 4, removed from the mould, heated in hydrogen (the paraffin being thus distilled off), replaced in the mould, repressed and sintered. A rubber pad 7 may be placed on top of the preform, or underneath it, or both, or rubber may completely surround it. The pad may be secured to the base of the plunger. The Specification as open to inspection under Sect. 91 states that the pad may be used in the preforming operation instead of in the final pressing, and that the invention may be applied to the making of rectangular bars, in which case no paraffin is used and the preforming operation may be omitted. This subject-matter does not appear in the -Specification as accepted.
GB7252/42A 1941-05-29 1942-05-28 Improvements in and relating to methods for producing high density sintered products Expired GB557847A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US557847XA 1941-05-29 1941-05-29

Publications (1)

Publication Number Publication Date
GB557847A true GB557847A (en) 1943-12-08

Family

ID=22000135

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7252/42A Expired GB557847A (en) 1941-05-29 1942-05-28 Improvements in and relating to methods for producing high density sintered products

Country Status (1)

Country Link
GB (1) GB557847A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480633A1 (en) * 1980-04-16 1981-10-23 Msp Ind SEGMENTED MATRIX, IN PARTICULAR FOR THE MATRIXING OF METALS, METHOD OF MANUFACTURING SUCH MATRIX, AND METHOD OF MANUFACTURING ROD HEAD HAT COMPRISING THE USE OF SUCH A MATRIX

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480633A1 (en) * 1980-04-16 1981-10-23 Msp Ind SEGMENTED MATRIX, IN PARTICULAR FOR THE MATRIXING OF METALS, METHOD OF MANUFACTURING SUCH MATRIX, AND METHOD OF MANUFACTURING ROD HEAD HAT COMPRISING THE USE OF SUCH A MATRIX

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