GB1225785A - - Google Patents

Info

Publication number
GB1225785A
GB1225785A GB2800568A GB1225785DA GB1225785A GB 1225785 A GB1225785 A GB 1225785A GB 2800568 A GB2800568 A GB 2800568A GB 1225785D A GB1225785D A GB 1225785DA GB 1225785 A GB1225785 A GB 1225785A
Authority
GB
United Kingdom
Prior art keywords
tube
pipe
nitriding
bore
secured
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
GB2800568A
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 filed Critical
Publication of GB1225785A publication Critical patent/GB1225785A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/32—Gas-filled discharge tubes
    • H01J37/32431—Constructional details of the reactor
    • H01J37/3244—Gas supply means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/087—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J19/088—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • 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
    • C23C8/36—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 using ionised gases, e.g. ionitriding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/22—Barrels which have undergone surface treatment, e.g. phosphating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

1,225,785. Nitriding by glow discharge. ELEKTROPHYSIKALISCHE ANSTALT BERNHARD BERGHAUS. June 12, 1968, No.28005/68. Heading C7U. [Also in Division H1] In a process and apparatus for nitriding the bore of tubes, particularly gun barrels, the treating gas, which may be ammonia, is supplied to the bore by a pipe coaxial with it, the pipe having a closed end and a series of baffled nozzles inside the tube. The latter is connected as cathode and the supply tube as anode. As particularly described tube workpiece 9 is secured in centering bodies 8, 11, the former being secured to the roof of chamber 2, while gas supply pipe 14 having nozzles 19 and baffle sleeve 20 is connected to gas inlet 18. Electrical contact with tube 9 is made through conductor 10.
GB2800568A 1968-04-18 1968-06-12 Expired GB1225785A (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DEE31465A DE1281771B (en) 1968-04-18 1968-04-18 Method and device for ionitriding iron and steel pipes by means of an electric glow discharge
CH803568A CH501062A (en) 1968-04-18 1968-05-30 Method and device for ionitriding of pipes made of iron and steel by means of an electric glow discharge
NL6807978A NL6807978A (en) 1968-04-18 1968-06-06
US73567568A 1968-06-10 1968-06-10
GB2800568 1968-06-12
FR157953 1968-07-04

Publications (1)

Publication Number Publication Date
GB1225785A true GB1225785A (en) 1971-03-24

Family

ID=27543809

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2800568A Expired GB1225785A (en) 1968-04-18 1968-06-12

Country Status (7)

Country Link
US (1) US3594302A (en)
BE (1) BE716808A (en)
CH (1) CH501062A (en)
DE (1) DE1281771B (en)
FR (1) FR1575982A (en)
GB (1) GB1225785A (en)
NL (1) NL6807978A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2264891B1 (en) * 1974-03-19 1977-10-07 Michel Henri
DE2657078C2 (en) * 1975-12-29 1984-08-16 Kawasaki Jukogyo K.K., Kobe, Hyogo Device for direct current ion nitriding of workpieces
FR2446327A1 (en) * 1979-01-09 1980-08-08 Fours Indls Cie Internal nitriding and/or carburising of gun or extruder barrels - by thermochemical ion bombardment after creating uniform electric field
FR2446326A1 (en) * 1979-01-10 1980-08-08 Creusot Loire IMPROVEMENT IN ION NITRURATION OF ELONGATED HOLLOW BODIES, IN STEEL
US5514064A (en) * 1987-08-20 1996-05-07 Della Torre; Renato Process and means for making metal inking rolls
US5662573A (en) * 1988-08-18 1997-09-02 Torre; Renato Della Metal inking roll for use in flexographic printing
DE10041114A1 (en) * 2000-08-22 2002-03-07 Rheinmetall W & M Gmbh Process for removing coating and / or erosion damage
PL238940B1 (en) * 2017-10-19 2021-10-18 Instytut Mech Precyzyjnej Anode for glow-discharge nitriding of inner surfaces of bushings, preferably barrels
GB2597794B (en) * 2020-08-06 2022-12-28 Gallyon Gun And Rifle Makers Ltd Method of manufacturing, repairing, hardening and/or improving the wear resistance of a component of a firearm
CN115181930B (en) * 2022-07-26 2023-09-05 扬州大学 Nitriding device of 304 stainless steel sewage pump pipeline

Also Published As

Publication number Publication date
BE716808A (en) 1968-12-02
NL6807978A (en) 1969-12-09
FR1575982A (en) 1969-07-25
DE1281771B (en) 1968-10-31
US3594302A (en) 1971-07-20
CH501062A (en) 1970-12-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee