GB672275A - Improvements in or relating to the manufacture of tools - Google Patents

Improvements in or relating to the manufacture of tools

Info

Publication number
GB672275A
GB672275A GB2320049A GB2320049A GB672275A GB 672275 A GB672275 A GB 672275A GB 2320049 A GB2320049 A GB 2320049A GB 2320049 A GB2320049 A GB 2320049A GB 672275 A GB672275 A GB 672275A
Authority
GB
United Kingdom
Prior art keywords
halide
solid
tools
kaolin
carbide
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
GB2320049A
Inventor
Robert Lionel Samuel
Norman Anthony Lockington
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.)
Diffusion Alloys Ltd
Original Assignee
Diffusion Alloys 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 Diffusion Alloys Ltd filed Critical Diffusion Alloys Ltd
Priority to GB2320049A priority Critical patent/GB672275A/en
Publication of GB672275A publication Critical patent/GB672275A/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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/34—Embedding in a powder mixture, i.e. pack cementation
    • C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
    • C23C10/38—Chromising
    • C23C10/40—Chromising of ferrous surfaces
    • C23C10/42—Chromising of ferrous surfaces in the presence of volatile transport additives, e.g. halogenated substances

Abstract

Ferrous tools are heated in a closed reaction vessel in a solid which contains a halide of a carbide-forming metal or which is capable of giving rise to such a halide on heating, such halide being present or being formed in a proportion not exceeding 0.2 per cent of the solid. The halide is preferably an iodide, the carbide-forming metal may be chromium, molybdenum or tungsten and heating may be effected at 750 DEG -1100 DEG C. The vessel may be sealed as described in Specification 646,638. In examples, mixtures of ferro-chromium, kaolin and potassium iodide and urea are used. Alumina or magnesia or mixtures thereof, with or without kaolin, may also form part of the solid.
GB2320049A 1949-09-07 1949-09-07 Improvements in or relating to the manufacture of tools Expired GB672275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2320049A GB672275A (en) 1949-09-07 1949-09-07 Improvements in or relating to the manufacture of tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2320049A GB672275A (en) 1949-09-07 1949-09-07 Improvements in or relating to the manufacture of tools

Publications (1)

Publication Number Publication Date
GB672275A true GB672275A (en) 1952-05-21

Family

ID=10191773

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2320049A Expired GB672275A (en) 1949-09-07 1949-09-07 Improvements in or relating to the manufacture of tools

Country Status (1)

Country Link
GB (1) GB672275A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002002843A2 (en) * 2000-06-29 2002-01-10 Borg Warner, Inc. Carbide coated steel articles and method of making them
WO2013070314A1 (en) * 2011-09-13 2013-05-16 Rexnord Industries, Llc Article with wear- resistant coating and method of forming same
WO2020053443A1 (en) 2018-09-14 2020-03-19 Trd Surfaces Aps Stainless steel object having a surface modified with chromium
CN114345935A (en) * 2021-12-28 2022-04-15 浙江精瑞工模具有限公司 High-speed steel rolling method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002002843A2 (en) * 2000-06-29 2002-01-10 Borg Warner, Inc. Carbide coated steel articles and method of making them
WO2002002843A3 (en) * 2000-06-29 2002-05-30 Borgwarner Inc Carbide coated steel articles and method of making them
US6582765B2 (en) 2000-06-29 2003-06-24 Borgwarner, Inc. Carbide coated steel articles and method of making them
KR100776492B1 (en) 2000-06-29 2007-11-16 보그-워너 인코포레이티드 Carbide coated steel articles and method of making them
WO2013070314A1 (en) * 2011-09-13 2013-05-16 Rexnord Industries, Llc Article with wear- resistant coating and method of forming same
WO2020053443A1 (en) 2018-09-14 2020-03-19 Trd Surfaces Aps Stainless steel object having a surface modified with chromium
CN114345935A (en) * 2021-12-28 2022-04-15 浙江精瑞工模具有限公司 High-speed steel rolling method
CN114345935B (en) * 2021-12-28 2024-01-12 浙江精瑞工模具有限公司 High-speed steel rolling method

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