SE7408692L - - Google Patents
Info
- Publication number
- SE7408692L SE7408692L SE7408692A SE7408692A SE7408692L SE 7408692 L SE7408692 L SE 7408692L SE 7408692 A SE7408692 A SE 7408692A SE 7408692 A SE7408692 A SE 7408692A SE 7408692 L SE7408692 L SE 7408692L
- Authority
- SE
- Sweden
- Prior art keywords
- strip
- steel
- powder
- rolled
- carburized
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/145—Chemical treatment, e.g. passivation or decarburisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/72—Temporary coatings or embedding materials applied before or during heat treatment during chemical change of surfaces
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- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- 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
- C23C8/04—Treatment of selected surface areas, e.g. using masks
-
- 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
- C23C8/20—Carburising
- C23C8/22—Carburising of ferrous surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2201/00—Treatment under specific atmosphere
- B22F2201/01—Reducing atmosphere
- B22F2201/013—Hydrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2201/00—Treatment under specific atmosphere
- B22F2201/30—Carburising atmosphere
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Plasma & Fusion (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Powder Metallurgy (AREA)
Abstract
1450937 Carburizing steel strip BRITISH STEEL CORP 21 June 1974 [3 July 1973 22 March 1974] 31584/73 and 12874/74 Headings C7D and C7U A steel strip formed from powder, e.g. of high alloy tool or spring steel or martensitic Cr steel, having a C content of no more than 0À3% is rolled to its required gauge, and subsequently carburized in an atmosphere of, e.g. methane or propane. The strip may be produced by compacting wateratomized powder in contrarotating rolls and sintering the green strip in H 2 or Ar. If only part of the strip is to be carburized, e.g. for cutting edges of saw blades and razor blades, the remainder of the strip may be masked prior to carburization. The masking may be effected by applying a Cu or Niplating solution or a refractory oxide paste to the strip. In the Example, a water atomized steel powder containing 5À8% W, 4À6% Mo, 4À25% Cr, 2À01% V, 0À014% C, plus small amounts of Si, Mn, S, P and O, was rolled, the compacted powder being sintered at 1250‹C for 3 minutes in H 2 and cold-rolled by 30-70%. The powder may be annealed in H 2 prior to rolling. The cold-rolled strip was then carburized at 1050‹C for 3 hours.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3158473 | 1973-07-03 | ||
| GB1287474*[A GB1450937A (en) | 1973-07-03 | 1974-03-22 | Production and subsequent carburisation of steel products motor vehicle folding rear seat assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE7408692L true SE7408692L (en) | 1975-01-07 |
Family
ID=26249329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7408692A SE7408692L (en) | 1973-07-03 | 1974-07-02 |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5070257A (en) |
| DE (1) | DE2431797A1 (en) |
| FR (1) | FR2236016B3 (en) |
| GB (1) | GB1450937A (en) |
| SE (1) | SE7408692L (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2802445C3 (en) * | 1977-11-15 | 1981-02-05 | British Steel Corp., London | Process for the continuous production of a steel strip from steel powder |
| US4165243A (en) * | 1978-05-31 | 1979-08-21 | Federal-Mogul Corporation | Method of making selectively carburized forged powder metal parts |
| DE3035772C2 (en) * | 1980-09-23 | 1982-09-30 | Schunk & Ebe Gmbh, 6301 Heuchelheim | Process for the production of a surface-hardened sintered iron part |
| JPS60215764A (en) * | 1984-04-09 | 1985-10-29 | Nippon Steel Corp | Formation of film |
| EP0751234B1 (en) * | 1995-06-30 | 1998-10-14 | CARL AUG. PICARD GMBH & CO. KG. | Blade body for saws such as circular or gang saws, cutting discs and cutting or scrapping apparatus |
| US6165597A (en) * | 1998-08-12 | 2000-12-26 | Swagelok Company | Selective case hardening processes at low temperature |
| WO2000009776A1 (en) * | 1998-08-12 | 2000-02-24 | Swagelok Company | Selective case hardening for metal articles |
| KR101515840B1 (en) * | 2013-10-22 | 2015-05-04 | 디케이락 주식회사 | Partially Nitrocarburizing Heat Treated Stainless Steel Ferrule and Manufacturing Method Therefor |
| CN103981469B (en) * | 2014-05-16 | 2016-01-20 | 吴江市英力达塑料包装有限公司 | A kind of high-strength spring steel and preparation method thereof |
-
1974
- 1974-03-22 GB GB1287474*[A patent/GB1450937A/en not_active Expired
- 1974-07-02 JP JP49075066A patent/JPS5070257A/ja active Pending
- 1974-07-02 DE DE2431797A patent/DE2431797A1/en active Pending
- 1974-07-02 SE SE7408692A patent/SE7408692L/ not_active Application Discontinuation
- 1974-07-03 FR FR7423100A patent/FR2236016B3/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5070257A (en) | 1975-06-11 |
| FR2236016A1 (en) | 1975-01-31 |
| DE2431797A1 (en) | 1975-01-30 |
| FR2236016B3 (en) | 1977-05-06 |
| GB1450937A (en) | 1976-09-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAV | Patent application has lapsed |
Ref document number: 7408692-7 |