GB670869A - Improvements in and relating to the manufacture of gun barrels - Google Patents

Improvements in and relating to the manufacture of gun barrels

Info

Publication number
GB670869A
GB670869A GB17104/50A GB1710450A GB670869A GB 670869 A GB670869 A GB 670869A GB 17104/50 A GB17104/50 A GB 17104/50A GB 1710450 A GB1710450 A GB 1710450A GB 670869 A GB670869 A GB 670869A
Authority
GB
United Kingdom
Prior art keywords
box
barrel
july
oven
gun barrels
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
GB17104/50A
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.)
Svenska AB Gasaccumulator
Original Assignee
Svenska AB Gasaccumulator
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 Svenska AB Gasaccumulator filed Critical Svenska AB Gasaccumulator
Publication of GB670869A publication Critical patent/GB670869A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/24—Nitriding
    • C23C8/26—Nitriding of ferrous surfaces
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals

Abstract

670,869. Gun barrels. SVENSKA AKTIEBOLAGET GARACCUMULATOR. July 7, 1950. [July 8, 1949] No. 17104/50. Class 119. A gun barrel has a nitrided layer formed on the surface of its bore, the layer being of a depth greater than .01 mm. and smaller than .6 mm. In an example the barrel is made of a tempered, nitridable steel of the following analysis : and the remainder iron. The barrel is placed horizontally in a closed box through which gaseous ammonia is passed, the box being kept heated in an oven at about 550‹C for 10 hours. This gives a nitriding depth of about .2 mm. The box is left to cool in the oven to a temperature of about 250 ‹C, during which time ammonia or some other inert gas should flow through the box to prevent the influx of air. Specification 589,069, [Group II], is referred to.
GB17104/50A 1949-07-08 1950-07-07 Improvements in and relating to the manufacture of gun barrels Expired GB670869A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE670869X 1949-07-08

Publications (1)

Publication Number Publication Date
GB670869A true GB670869A (en) 1952-04-23

Family

ID=20314608

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17104/50A Expired GB670869A (en) 1949-07-08 1950-07-07 Improvements in and relating to the manufacture of gun barrels

Country Status (1)

Country Link
GB (1) GB670869A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916409A (en) * 1950-11-09 1959-12-08 Elektrophysikalische Anstalt Process and apparatus for the treatment of ferrous articles
DE1141851B (en) * 1955-11-26 1962-12-27 Berghaus Elektrophysik Anst Method for reducing sliding friction and using the same for firearms
DE19544824A1 (en) * 1995-08-23 1997-02-27 Rheinmetall Ind Ag Drawn gun barrel and method of making such a barrel
FR2738058A1 (en) * 1995-08-23 1997-02-28 Rheinmetall Ind Gmbh RAYWALL ARM TUBE AND METHOD OF MAKING A TUBE OF THIS TYPE

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916409A (en) * 1950-11-09 1959-12-08 Elektrophysikalische Anstalt Process and apparatus for the treatment of ferrous articles
US2946708A (en) * 1950-11-09 1960-07-26 Berghaus Elektrophysik Anst Nitriding with electric glow discharge
DE1141850B (en) * 1950-11-09 1962-12-27 Berghaus Elektrophysik Anst Method and device for improving a thermal-chemical surface treatment of pipes
DE1141851B (en) * 1955-11-26 1962-12-27 Berghaus Elektrophysik Anst Method for reducing sliding friction and using the same for firearms
DE19544824A1 (en) * 1995-08-23 1997-02-27 Rheinmetall Ind Ag Drawn gun barrel and method of making such a barrel
FR2738058A1 (en) * 1995-08-23 1997-02-28 Rheinmetall Ind Gmbh RAYWALL ARM TUBE AND METHOD OF MAKING A TUBE OF THIS TYPE
GB2304873A (en) * 1995-08-23 1997-03-26 Rheinmetall Ind Gmbh Rifled barrels
DE19544824C2 (en) * 1995-08-23 1998-06-04 Rheinmetall Ind Ag Drawn gun barrel and method of making such a barrel
GB2304873B (en) * 1995-08-23 1999-10-13 Rheinmetall Ind Gmbh Rifled barrels

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