GB815958A - Metallurgical process for treating steel - Google Patents

Metallurgical process for treating steel

Info

Publication number
GB815958A
GB815958A GB31416/57A GB3141657A GB815958A GB 815958 A GB815958 A GB 815958A GB 31416/57 A GB31416/57 A GB 31416/57A GB 3141657 A GB3141657 A GB 3141657A GB 815958 A GB815958 A GB 815958A
Authority
GB
United Kingdom
Prior art keywords
steel
temperature
reduction
range
diffusion transfer
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
GB31416/57A
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.)
Lasalle Steel Co
Original Assignee
Lasalle Steel Co
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 Lasalle Steel Co filed Critical Lasalle Steel Co
Publication of GB815958A publication Critical patent/GB815958A/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
    • C23C8/80—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

815,958. Altering physical properties. SALLE STEEL CO. Oct. 8, 1957 [Oct. 22, 1956], No. 31416/57. Class 83 (4). Working at specified temperatures.-A metallurgical process for treating hot rolled non- austenitic steel having a pearlitic structure in a matrix of free ferrite comprises heating the steel to above its transformation range while in contact with a material for diffusion transfer of elements into the surface of the steel, cooling the steel, and subsequently making a reduction in the cross-section of the steel by working the steel at a temperature within the range of 200‹ F. to the lower critical temperature for the steel composition. The diffusion transfer includes carburizing, nitriding, cyaniding and carbonitriding. After carburizing, the steel is either (1) quenched rapidly to room temperature followed by reheating to within said temperature range for the reduction step, or (2) air cooled to ambient temperature and then reheated to the required temperature for reduction, or (3) quenched or air cooled to the required temperature for reduction preferably in the range of 460‹ F. to the lower critical temperature. Prior to carrying out the diffusion transfer step the hot rolled steel is descaled. by pickling in sulphuric acid and limed to prevent rusting. Specifications 761,150 and 761,151 are referred to.
GB31416/57A 1956-10-22 1957-10-08 Metallurgical process for treating steel Expired GB815958A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US815958XA 1956-10-22 1956-10-22

Publications (1)

Publication Number Publication Date
GB815958A true GB815958A (en) 1959-07-01

Family

ID=22165135

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31416/57A Expired GB815958A (en) 1956-10-22 1957-10-08 Metallurgical process for treating steel

Country Status (1)

Country Link
GB (1) GB815958A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007058597A1 (en) * 2005-11-21 2007-05-24 Iut Industriell Ugnsteknik Ab A method for the temperature treatment of extrusion tools
CN112962051A (en) * 2021-01-29 2021-06-15 安徽合力股份有限公司合肥铸锻厂 Boronizing method for austenitic stainless steel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007058597A1 (en) * 2005-11-21 2007-05-24 Iut Industriell Ugnsteknik Ab A method for the temperature treatment of extrusion tools
US8240183B2 (en) 2005-11-21 2012-08-14 IUT Industriell Ugnsteknik Sweden Method for the temperature treatment of extrusion tools
CN112962051A (en) * 2021-01-29 2021-06-15 安徽合力股份有限公司合肥铸锻厂 Boronizing method for austenitic stainless steel

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