GB1150494A - Method for producing High Density Tungsten Ingots - Google Patents
Method for producing High Density Tungsten IngotsInfo
- Publication number
- GB1150494A GB1150494A GB48844/67A GB4884467A GB1150494A GB 1150494 A GB1150494 A GB 1150494A GB 48844/67 A GB48844/67 A GB 48844/67A GB 4884467 A GB4884467 A GB 4884467A GB 1150494 A GB1150494 A GB 1150494A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- kilobars
- pressures
- degassed
- compact
- 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
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/045—Alloys based on refractory metals
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
1,150,494. Hot pressed tungsten bodies. UNITED STATES ATOMIC ENERGY COMMISSION. Oct. 26, 1967 [March 13, 1967], No. 48844/67. Heading C7D. Hot pressed W ingots having a density greater than 98% theoretical are produced by compacting degassed green compacts to at least 1 kilobar and heating to 900 -1400C. while maintaining the pressure, and then reducing the temperature and pressure at such a rate that the pressure is reduced to atmospheric prior to the temperature reaching 700C. For compacting pressures of 2-15 kilobars the pressure is reduced at a rate of 1000 p.s.i/sec. and for pressures of 15-50 kilobars the rate is more than 10<SP>4</SP> p.s.i/sec. A conventional piston cylinder compaction apparatus Fig. 5 (not shown) is used for pressures of 2-15 kilobars and a belt type high pressure apparatus Fig. 4 is used for pressures of 15-50 kilobars. The W metal powder is first pressed at 100, 000-150, 000 p.s.i, degassed at 200C. in vacuum and then pre-sintered at 900C. in H2. After machining to size the compact is enclosed in a Mo container, vacuum degassed at 500C. and hermetically sealed under vacuum. The sealed compact 13 is then placed in compression chamber 10 which is laterally circumscribed by steel belt 11, steel pistons 12 projecting into the central opening. Graphite furnace 16 surrounds the compact which is insulated by jacket 17 of boron nitride. Compaction is effected by placing the assembly in a press.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62319667A | 1967-03-13 | 1967-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1150494A true GB1150494A (en) | 1969-04-30 |
Family
ID=24497140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB48844/67A Expired GB1150494A (en) | 1967-03-13 | 1967-10-26 | Method for producing High Density Tungsten Ingots |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS4914965B1 (en) |
| BE (1) | BE706872A (en) |
| CH (1) | CH482482A (en) |
| DE (1) | DE1583763A1 (en) |
| GB (1) | GB1150494A (en) |
| NL (1) | NL6715401A (en) |
| NO (1) | NO122445B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198494A (en) * | 2016-06-30 | 2016-12-07 | 北京普析通用仪器有限责任公司 | A kind of inductive coupling plasma emission spectrograph |
| CN107152869A (en) * | 2017-06-06 | 2017-09-12 | 宝鸡新高真空炉业有限公司 | Hydrogen environment, vacuum environment automatically continuously change sintering process and equipment at 2600 DEG C |
| CN114012091A (en) * | 2021-11-05 | 2022-02-08 | 中国科学院金属研究所 | A kind of tungsten ingot and preparation method thereof |
| CN114247900A (en) * | 2021-12-31 | 2022-03-29 | 广东省科学院新材料研究所 | A heat treatment method for additively manufactured pure tungsten test piece and pure tungsten parts and application thereof |
-
1967
- 1967-10-26 GB GB48844/67A patent/GB1150494A/en not_active Expired
- 1967-11-14 NL NL6715401A patent/NL6715401A/xx unknown
- 1967-11-21 CH CH1631467A patent/CH482482A/en not_active IP Right Cessation
- 1967-11-21 DE DE19671583763 patent/DE1583763A1/en active Pending
- 1967-11-22 BE BE706872D patent/BE706872A/xx unknown
- 1967-12-27 NO NO171150A patent/NO122445B/no unknown
-
1968
- 1968-03-13 JP JP43015969A patent/JPS4914965B1/ja active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198494A (en) * | 2016-06-30 | 2016-12-07 | 北京普析通用仪器有限责任公司 | A kind of inductive coupling plasma emission spectrograph |
| CN107152869A (en) * | 2017-06-06 | 2017-09-12 | 宝鸡新高真空炉业有限公司 | Hydrogen environment, vacuum environment automatically continuously change sintering process and equipment at 2600 DEG C |
| CN114012091A (en) * | 2021-11-05 | 2022-02-08 | 中国科学院金属研究所 | A kind of tungsten ingot and preparation method thereof |
| CN114247900A (en) * | 2021-12-31 | 2022-03-29 | 广东省科学院新材料研究所 | A heat treatment method for additively manufactured pure tungsten test piece and pure tungsten parts and application thereof |
| CN114247900B (en) * | 2021-12-31 | 2023-10-31 | 广东省科学院新材料研究所 | A heat treatment method for additive manufacturing of pure tungsten specimens and pure tungsten parts and their applications |
Also Published As
| Publication number | Publication date |
|---|---|
| NO122445B (en) | 1971-06-28 |
| DE1583763A1 (en) | 1970-09-24 |
| JPS4914965B1 (en) | 1974-04-11 |
| BE706872A (en) | 1968-04-01 |
| NL6715401A (en) | 1968-09-16 |
| CH482482A (en) | 1969-12-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |