GB340794A - Improved container intended for case-hardening and more particularly for nitrogenisation - Google Patents

Improved container intended for case-hardening and more particularly for nitrogenisation

Info

Publication number
GB340794A
GB340794A GB838/30A GB83830A GB340794A GB 340794 A GB340794 A GB 340794A GB 838/30 A GB838/30 A GB 838/30A GB 83830 A GB83830 A GB 83830A GB 340794 A GB340794 A GB 340794A
Authority
GB
United Kingdom
Prior art keywords
duval
class
hardening
case
nitrogenisation
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
GB838/30A
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 GB340794A publication Critical patent/GB340794A/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

Abstract

340,794. Hardening iron and steel. AUBERT, P. F. M., DUVAL, A. J. P., and DUVAL, H. A. M., (trading as AUBERT ET DUVAL FR’RES), 62, Avenue de la RÚpubli. que, Paris. Jan. 9, 1930, No. 838. Convention date, Jan. 23, 1929. [Class 72.] A container A for use in case-hardening iron and steel, particularly by nitrogenization, is provided with compartments a<1>, a3, formed with apertures a<2>, a<4> in their bottom and top respectively and shaped as shown in Fig. 1, so that the nitrogenizing gas is distributed uniformly throughout the container. The gas before entering the compartment a<1> by a pipe c<1> is heated by passing through a chamber c<2> provided with heating tubes c<3>. The exhausted gas leaves the compartment a<3> by a pipe D. The chamber c<2> may be dispensed with, or may be replaced by other heating means having a sufficient surface. Specifications 18195/97, [Class 34, Drying], and 133,263, [Class 140, Waterproof &c. fabrics], are referred to.
GB838/30A 1929-01-23 1930-01-09 Improved container intended for case-hardening and more particularly for nitrogenisation Expired GB340794A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE340794X 1929-01-23

Publications (1)

Publication Number Publication Date
GB340794A true GB340794A (en) 1931-01-08

Family

ID=6229546

Family Applications (1)

Application Number Title Priority Date Filing Date
GB838/30A Expired GB340794A (en) 1929-01-23 1930-01-09 Improved container intended for case-hardening and more particularly for nitrogenisation

Country Status (1)

Country Link
GB (1) GB340794A (en)

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