GB812235A - Improvements in rotating bands for projectiles and methods for making the same - Google Patents

Improvements in rotating bands for projectiles and methods for making the same

Info

Publication number
GB812235A
GB812235A GB11406/57A GB1140657A GB812235A GB 812235 A GB812235 A GB 812235A GB 11406/57 A GB11406/57 A GB 11406/57A GB 1140657 A GB1140657 A GB 1140657A GB 812235 A GB812235 A GB 812235A
Authority
GB
United Kingdom
Prior art keywords
sintering
projectiles
rotating bands
making
methods
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
GB11406/57A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB812235A publication Critical patent/GB812235A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/02—Driving bands; Rotating bands
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/145—Chemical treatment, e.g. passivation or decarburisation
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/17—Metallic particles coated with metal
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0207—Using a mixture of prealloyed powders or a master alloy
    • C22C33/0228—Using a mixture of prealloyed powders or a master alloy comprising other non-metallic compounds or more than 5% of graphite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Powder Metallurgy (AREA)

Abstract

Rotating bands for projectiles are made by sintering powdered iron or carbon steel which has previously been heated in ammonia gas to 250-510 DEG C. to render the metal resistant to wear without increasing its hardness. The sintering is carried out under pressure, for example 3 to 4 metric tons per square centimetre, and the temperature required for sintering may be lowered by chemically depositing 0.8-2.0 per cent by weight of copper on to the iron powder by immersion in an ammoniacal solution of copper sulphate which contains tartaric acid.
GB11406/57A 1956-04-15 1957-04-08 Improvements in rotating bands for projectiles and methods for making the same Expired GB812235A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH812235X 1956-04-15

Publications (1)

Publication Number Publication Date
GB812235A true GB812235A (en) 1959-04-22

Family

ID=4538600

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11406/57A Expired GB812235A (en) 1956-04-15 1957-04-08 Improvements in rotating bands for projectiles and methods for making the same

Country Status (7)

Country Link
US (1) US2979810A (en)
BE (1) BE556476A (en)
CH (1) CH346460A (en)
DE (1) DE1036114B (en)
FR (1) FR1171194A (en)
GB (1) GB812235A (en)
NL (2) NL99102C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256818A (en) * 1955-11-26 1966-06-21 Berghaus Bernhard Method of reducing barrel wear

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE441305B (en) * 1979-03-07 1985-09-23 Bofors Ab WAY TO FIX A PROJECTIL'S BELT BY FRICTION SWEATING

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2323162A (en) * 1940-11-26 1943-06-29 Gen Motors Corp Flatiron base
US2411073A (en) * 1944-08-16 1946-11-12 Isthmian Metals Inc Making products of iron or iron alloys
US2483075A (en) * 1944-12-15 1949-09-27 New Jersey Zinc Co Method of copper coating iron particles
US2666724A (en) * 1952-12-03 1954-01-19 Gen Aniline & Film Corp Process of preparing iron powder of improved electromagnetic properties
US2812276A (en) * 1953-06-29 1957-11-05 Int Nickel Co High frequency cores

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256818A (en) * 1955-11-26 1966-06-21 Berghaus Bernhard Method of reducing barrel wear

Also Published As

Publication number Publication date
NL216283A (en)
CH346460A (en) 1960-05-15
BE556476A (en)
NL99102C (en)
DE1036114B (en) 1958-08-07
US2979810A (en) 1961-04-18
FR1171194A (en) 1959-01-22

Similar Documents

Publication Publication Date Title
GB806644A (en) Double-skeleton material particularly suitable for use as an electrode in a fuel cell
GB598181A (en) A process for the coating of metal powders
GB812235A (en) Improvements in rotating bands for projectiles and methods for making the same
GB733073A (en) Improvements in or relating to production of artificial graphite masses
ES320848A1 (en) Procedure to produce the carbon loss of a graphite moderator in a nuclear reactor. (Machine-translation by Google Translate, not legally binding)
GB665794A (en) Powder metallurgy process for producing steel parts
GB1361354A (en) Nickel recovery process
GB1063306A (en) Process for coating high temperature metals and alloys
GB669570A (en) Improvements in or relating to metal powder material suitable for powder metallurgical operations
GB972686A (en) A process for producing a sintered metallic article
GB823407A (en) Improvements in or relating to the production of metal powders
GB639138A (en) Improvements relating to powder metallurgically produced materials and processes formaking the same
GB697172A (en) Improvements in or relating to armour-piercing cores for projectiles
GB1069819A (en) Improvements in and relating to the direct reduction of ores
GB689489A (en) Improvements in the production of highly permeable magnetic powders
GB801115A (en) Protection of ferrous metal parts against liquid molten aluminium
GB675346A (en) Improvements in the production by the carbonyl process of iron powder for powder-metallurgical purposes
GB560986A (en) Method of producing formed objects from finely subdivided pig iron without melting, and objects made according to the method
GB763398A (en) Improvements in or relating to steel
GB613041A (en) Improvements in methods of producing alloy bodies
GB762267A (en) Methods of making sintered articles from austenitic stainless steels
GB996198A (en) A method for producing rolled steel products
GB877675A (en) Improvements in and relating to methods of nitriding articles made from a metal alloy
GB797287A (en) Improvements in or relating to a method of making a heat-treatable article of stainless steel
GB572776A (en) Improvements in the manufacture of alloys containing molybdenum, and in the production of molybdenum oxide masses suitable for use in such manufacture