SE9602540L - Method of processing a metal product - Google Patents

Method of processing a metal product

Info

Publication number
SE9602540L
SE9602540L SE9602540A SE9602540A SE9602540L SE 9602540 L SE9602540 L SE 9602540L SE 9602540 A SE9602540 A SE 9602540A SE 9602540 A SE9602540 A SE 9602540A SE 9602540 L SE9602540 L SE 9602540L
Authority
SE
Sweden
Prior art keywords
product
metal
oven
hydr
metal product
Prior art date
Application number
SE9602540A
Other languages
Swedish (sv)
Other versions
SE9602540D0 (en
Inventor
Andrew P Backhouse
Dereck R Johns
Original Assignee
Avesta Sheffield Ab
British Steel Plc
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 Avesta Sheffield Ab, British Steel Plc filed Critical Avesta Sheffield Ab
Priority to SE9602540A priority Critical patent/SE9602540L/en
Publication of SE9602540D0 publication Critical patent/SE9602540D0/en
Publication of SE9602540L publication Critical patent/SE9602540L/en

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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

A method for treating a cold-processed metal product having a thin (hydr)oxide layer (1) on its surface, comprises heating the product in an oxidising atmosphere inside an oven until it glows red hot and then treating the product to remove scale formed on the product surfaces in the oven.Before the product is heated in the oven it is pre-treated in an aqueous acid solution containing free protons that completely remove the (hydr)oxide layer by means of a reduction reaction to enable the metal beneath this layer to be oxidised and form a new surface layer (2) comprising the reaction products of the acid solution components with the metal and optional unreacted components in the metal. The conditioned metal product is then heated in the oven. Preferably a stainless steel metal product is pre-treated in sulphuric acid, hydrochloric acid or hydrofluoric acid.
SE9602540A 1996-06-27 1996-06-27 Method of processing a metal product SE9602540L (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9602540A SE9602540L (en) 1996-06-27 1996-06-27 Method of processing a metal product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9602540A SE9602540L (en) 1996-06-27 1996-06-27 Method of processing a metal product

Publications (2)

Publication Number Publication Date
SE9602540D0 SE9602540D0 (en) 1996-06-27
SE9602540L true SE9602540L (en) 1997-12-28

Family

ID=20403180

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9602540A SE9602540L (en) 1996-06-27 1996-06-27 Method of processing a metal product

Country Status (1)

Country Link
SE (1) SE9602540L (en)

Also Published As

Publication number Publication date
SE9602540D0 (en) 1996-06-27

Similar Documents

Publication Publication Date Title
KR900702070A (en) Metal oxidation treatment device and metal oxidation treatment method
ES2170214T3 (en) PROCEDURE OF PREPARATION, IN A LINE, CONTINUED, OF A LAMINATED STAINLESS STEEL SHEET BAND THAT PRESENTS AN IMPROVED SURFACE STATE.
DE69520007D1 (en) HEAT TREATMENT METHOD FOR ALUMINUM ALLOY SHEET
CA2040786A1 (en) Method for descaling hot-rolled stainless steel strip
EP1071835A4 (en) Method for developing an enhanced oxide coating on a component formed from stainless steel or nickel alloy steel
KR880014119A (en) Pretreatment method and apparatus for cold rolling stainless steel
SE9602540L (en) Method of processing a metal product
DE59300866D1 (en) METHOD FOR HEAT TREATING METALLIC GOODS.
ZA917973B (en) Process for the production of brown surface films on copper
ES2127282T3 (en) HYDROFLUOROCARBON PRODUCTION.
ATE516386T1 (en) METHOD FOR PICKLING MARTENSITIC OR FERRITIC STAINLESS STEEL
US2595411A (en) Method of removing oxides, oils, and grease from an uncoated metal article
ATE75786T1 (en) PROCESS FOR TREATMENT OF COLD ROLLED STAINLESS STEEL SHEET AND STRIP.
JPS57200573A (en) Continuous pickling method of ferrite and martensite stainless hot rolled steel band for preventing surface from being flawed
PT82125B (en) PROCESS FOR THE CHEMICAL POLYMING OF SURFACES IN ACO
JPS6462485A (en) Method for pickling hot rolled steel sheet at high speed
Ohmi et al. Apparatus and Method for Oxidation Treatment of Metal
JPS57194262A (en) Descaling method for stainless steel
Protzer et al. Process for Producing Brown Protective Coatings on Copper
Charbonnier et al. Chemical Surface Treatment Process of Aluminum Products Before Phosphating
Pfaffmann Innovations in induction heat treating techniques for control of distortion and improving dimensional results
Kasihara et al. Coated Article and Method for Producing Same
Ivanov et al. Oxidizing Properties of the Combustion Products of Fuel
JPS6479361A (en) Production of high carbon steel sheet having satisfactory adhesion of scale
Edenhofer et al. Developments in process technology and procedure of gas carburizing

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 9602540-8

Format of ref document f/p: F