GB801032A - Improvements relating to ductile chromium and chromium rich alloys - Google Patents
Improvements relating to ductile chromium and chromium rich alloysInfo
- Publication number
- GB801032A GB801032A GB26341/55A GB2634155A GB801032A GB 801032 A GB801032 A GB 801032A GB 26341/55 A GB26341/55 A GB 26341/55A GB 2634155 A GB2634155 A GB 2634155A GB 801032 A GB801032 A GB 801032A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chromium
- ductile
- room temperature
- less
- nitrogen
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/32—Obtaining chromium
Abstract
A method of preparing pure chromium which is ductile at room temperature comprises heating chromium flakes or particles for 10-20 hours at 1500-1200 DEG C. in hydrogen to remove oxygen, cooling to room temperature, heating for 10-20 hours at 1200-1000 DEG C. under a pressure of less than 1 mm. of mercury to remove nitrogen, and cooling to room temperature. The oxygen content may be reduced to less than 0.02 per cent and the nitrogen to less than 0.0005 per cent. The chromium flakes may be melted under an inert atmosphere and cast into ingots or may be used for the manufacture of alloys which are stated also to be ductile. Hot working of the chromium should be kept to a minimum and any nitrogen absorbed at the surface may be removed by a treatment under vacuum.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US801032XA | 1954-10-22 | 1954-10-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB801032A true GB801032A (en) | 1958-09-03 |
Family
ID=22155273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26341/55A Expired GB801032A (en) | 1954-10-22 | 1955-09-14 | Improvements relating to ductile chromium and chromium rich alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB801032A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808092A (en) * | 2012-09-14 | 2012-12-05 | 苏州晶纯新材料有限公司 | Method for preparing ultra low-oxygen chromium sheets |
| CN102814501A (en) * | 2012-09-14 | 2012-12-12 | 苏州晶纯新材料有限公司 | Preparation method of ultralow-oxygen chromium powder |
-
1955
- 1955-09-14 GB GB26341/55A patent/GB801032A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808092A (en) * | 2012-09-14 | 2012-12-05 | 苏州晶纯新材料有限公司 | Method for preparing ultra low-oxygen chromium sheets |
| CN102814501A (en) * | 2012-09-14 | 2012-12-12 | 苏州晶纯新材料有限公司 | Preparation method of ultralow-oxygen chromium powder |
| CN102814501B (en) * | 2012-09-14 | 2014-03-26 | 苏州晶纯新材料有限公司 | Preparation method of ultralow-oxygen chromium powder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB596214A (en) | Improvements in production of oxygen-free copper | |
| GB801032A (en) | Improvements relating to ductile chromium and chromium rich alloys | |
| SE7906182L (en) | PROCEDURE FOR THE PRODUCTION OF HOGRENT IRON POWDER | |
| GB845167A (en) | Improvements in magnetic material | |
| GB1002106A (en) | Process for production of ultra clean steel | |
| GB965710A (en) | Process for the production of beryllium having increased ductility at high temperatures | |
| GB829668A (en) | Improvements relating to zirconium alloys | |
| GB809587A (en) | Process for improving the hot workability of titanium alloys | |
| GB990022A (en) | Improvements in alloys with a nickel-chromium base | |
| GB863051A (en) | Thermal treatment of articles composed of an aluminum base alloy | |
| GB964709A (en) | Improvements in or relating to silicon steel | |
| ES485364A1 (en) | Procedure for the generation of hydrogen and oxygen from water (Machine-translation by Google Translate, not legally binding) | |
| GB840608A (en) | Improvements in or relating to the vacuum casting of metal ingots | |
| GB450841A (en) | Methods or processes for the heat-treatment of iron, steel and alloy steels | |
| GB808954A (en) | Ferritic alloys and methods of making and fabricating same | |
| GB748594A (en) | Improvements in and relating to steel | |
| GB794642A (en) | Improvements in or relating to processes for the production of pure germanium and silicon | |
| SU854030A1 (en) | Method of high-temperature steels and alloys thermal treatment | |
| GB718061A (en) | Improvements in or relating to methods of molding metal powders | |
| ES235904A1 (en) | Improvements introduced in the construction of electrolysis cells (Machine-translation by Google Translate, not legally binding) | |
| GB981956A (en) | Improvements in or relating to uranium alloys | |
| JPS55110752A (en) | Acoustic device material | |
| GB829669A (en) | Improvements in or relating to zinc-base bearing materials | |
| GB863047A (en) | Improvements in or relating to aluminium iron alloys | |
| GB901025A (en) | Improvements in or relating to the manufacture of titanium alloys |