GB815958A - Metallurgical process for treating steel - Google Patents
Metallurgical process for treating steelInfo
- 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
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.
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)
| 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 |
-
1957
- 1957-10-08 GB GB31416/57A patent/GB815958A/en not_active Expired
Cited By (3)
| 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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