CN100566921C - The preparation method of high-density molybdenum tube - Google Patents
The preparation method of high-density molybdenum tube Download PDFInfo
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- CN100566921C CN100566921C CNB2008101049861A CN200810104986A CN100566921C CN 100566921 C CN100566921 C CN 100566921C CN B2008101049861 A CNB2008101049861 A CN B2008101049861A CN 200810104986 A CN200810104986 A CN 200810104986A CN 100566921 C CN100566921 C CN 100566921C
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Abstract
The preparation method of high-density molybdenum tube belongs to refractory metal material processing and preparing field.The certainly existing molybdenum control of quasi-solution of the present invention is equipped with and has the cost height in the technology, the low density problem of molybdenum pipe.Method provided by the present invention be by: 1) with purity＞3N, granularity be the molybdenum powder of 1～10 μ m behind 160～220MPa isostatic compaction, at 1600～2000 ℃, sintering 1～8h under the hydrogen shield condition is prepared into annular molybdenum pipe in intermediate frequency furnace; 2) adopt 700～1500 ℃ of density that forge the raising step 1) gained molybdenum pipe that combines with 700～1500 ℃ of extruding; 3), in 700～1200 ℃ of annealing after 1～5h eliminate stress, carry out machining, cleaning, drying and obtain high-density molybdenum tube again with the high-density molybdenum pipe.It is low that the inventive method has a production cost, prepared molybdenum pipe purity height, density advantages of higher.
Description
Technical field
The invention belongs to refractory metal material processing and preparing field, be specifically related to the preparation method of high-density molybdenum tube.
Background technology
Molybdenum is a kind of silvery white metal, 2617 ℃ of fusing points, and 4612 ℃ of boiling points have good stability and corrosion resistance at normal temperatures, can be used for steel industry, can improve intensity, hardness and the corrosion stability of steel; Molybdenum and alloy thereof have excellent high-temperature intensity, good electrical conductivity and hot expansibility, therefore can make the heat resistant structure parts of aerospace, rocket and nuclear industry, have been widely used in fields such as aerospace industry, electronics industry and glass works.For molybdenum tube material wherein, process is many with the method preparation with real core molybdenum base machining pore-forming at present, but there is following problem in this kind preparation method: the offal scrap that stays in (1) process can't reclaim repeated use at present, causes the wasting of resources and increases production cost of products; (2) density of moulding molybdenum pipe is subjected to the restriction of sintering blank density, is difficult to continue to improve.
Summary of the invention
The objective of the invention is to solve the problems of the prior art, and the preparation method of high-density molybdenum tube is provided.The inventive method can increase molybdenum pipe density, make its satisfy simultaneously grain refinement and evenly, oxygen content low (less than 200ppm) and reduce application requirements such as latent defect, can reduce cost of goods manufactured, simple and easy to do again.
The present invention is by after preparing the molybdenum pipe with molybdenum powder isostatic compaction, intermediate frequency furnace high temperature sintering, the mode that adopts high temperature to forge with high temperature extruding connecting shaping again increases molybdenum pipe density, annealedly afterwards eliminates stress and machining, cleaning, drying are made high-density molybdenum tube.
Provided by the present invention forge to combine by high temperature with high temperature extruding forming prepare the method for high-density molybdenum tube, comprise the steps:
1) with purity＞3N, granularity be the molybdenum powder of 1～10 μ m behind 160～220Mpa isostatic compaction, 1600～2000 ℃ of insulations 1～8 hour, the hydrogen shield atmosphere sintering was prepared into annular molybdenum pipe in intermediate frequency furnace, density is 9.5～9.9g/cm
3
2) with the molybdenum pipe for preparing in the step 1), forge in 700～1500 ℃, deflection reaches moulding in 40～80% o'clock, makes the high-density molybdenum pipe, and density is 9.8～10.2g/cm
3
3) with step 2) the middle high-density molybdenum pipe for preparing, at 700～1500 ℃ of high temperature extruding formings, density reaches 9.9～10.2g/cm by extruder
3, again after 700～1200 ℃ of insulations eliminated stress in 1～5 hour, carry out machining, cleaning, drying and obtain high-density molybdenum tube.
Compared with prior art, the present invention has following beneficial effect:
1) the prepared molybdenum pipe purity height (the molybdenum percentage composition is greater than 99.95%) of the present invention, oxygen content low (oxygen content is less than 200ppm), molybdenum pipe density height is (greater than 9.5g/cm
3, reach as high as 10.2g/cm
3), grain refinement and even, defective is few, processing dimension wide ranges (external diameter: Φ 20～300mm, internal diameter: Φ 10～290mm, pipe range: 50～3000mm);
2) method provided by the present invention has reduced cutting hole allowance on the molybdenum base, has increased the density of molybdenum pipe simultaneously, has reduced raw-material waste when having improved molybdenum pipe performance, improves the utilization rate of material, reduces production costs.
The invention will be further described below in conjunction with the specific embodiment.
The specific embodiment
Embodiment 1
1) with molybdenum powder (purity greater than 99.95%, granularity 2～3 μ m) dress mould, through the 160Mpa isostatic compaction, use intermediate frequency furnace after the demoulding at 2000 ℃ of 1 hour hydrogen shield atmosphere sinterings of insulation down, obtain the tubulose sintered blank;
2) the tubulose sintered blank is put into mould and adopt pneumatic hammer 1420 ℃ of coggings, then carry out high temperature and freely forge under 700 ℃, deflection reaches 40%;
3) subsequently again by extruder 700 ℃ of following extrusion modlings, carried out annealing in process in 1 hour 1200 ℃ of insulations again after the moulding, carry out operations such as follow-up machining, cleaning, drying afterwards, make finished product.The molybdenum pipe that this kind method is prepared, satisfy technological requirement: external diameter Φ 120mm, internal diameter Φ 80mm, pipe range 2000mm, density reaches 10.2g/cm
3
Claims (1)
1, a kind of preparation method of high-density molybdenum tube is characterized in that, may further comprise the steps:
1) with purity＞3N, granularity be the molybdenum powder of 1～10 μ m behind 160～220Mpa isostatic compaction, in intermediate frequency furnace,, be prepared into annular molybdenum pipe at 1～8 hour hydrogen shield atmosphere sintering of 1600～2000 ℃ of insulations, density is 9.5～9.9g/cm
3
2) with the molybdenum pipe for preparing in the step 1), forge in 700～1500 ℃, deflection reaches moulding in 40～80% o'clock, makes the high-density molybdenum pipe, and density is 9.8～10.2g/cm
3
3) with step 2) the middle high-density molybdenum pipe for preparing, at 700～1500 ℃ of high temperature extruding formings, density reaches 9.9～10.2g/cm by extruder
3, again after 700～1200 ℃ of insulations eliminated stress in 1～5 hour, carrying out machining, cleaning, drying, to obtain density be 9.5～10.2g/cm
3High-density molybdenum tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101049861A CN100566921C (en) | 2008-04-25 | 2008-04-25 | The preparation method of high-density molybdenum tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101049861A CN100566921C (en) | 2008-04-25 | 2008-04-25 | The preparation method of high-density molybdenum tube |
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| Publication Number | Publication Date |
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| CN101259584A CN101259584A (en) | 2008-09-10 |
| CN100566921C true CN100566921C (en) | 2009-12-09 |
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| CNB2008101049861A Active CN100566921C (en) | 2008-04-25 | 2008-04-25 | The preparation method of high-density molybdenum tube |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101642811B (en) * | 2009-06-29 | 2011-01-05 | 金堆城钼业股份有限公司 | Preparation method of molybdenum product with heavy single weight |
| CN102699327B (en) * | 2012-01-04 | 2015-03-25 | 洛阳科威钨钼有限公司 | Process for manufacturing molybdenum crucibles |
| CN103203600B (en) * | 2013-04-12 | 2015-07-29 | 金堆城钼业股份有限公司 | Adopt finish forge legal system for the method for molybdenum electrode bar |
| CN103203601B (en) * | 2013-04-12 | 2015-07-29 | 金堆城钼业股份有限公司 | Die forging is adopted to prepare the method for molybdenum electrode bar |
| US10047434B2 (en) | 2014-06-19 | 2018-08-14 | Kewei Molybdenum And Tungsten Co., Ltd | Method for preparing ultra-long-tube type fine-grain molybdenum tube target |
| CN104057088B (en) * | 2014-06-19 | 2016-06-29 | 洛阳科威钨钼有限公司 | A kind of preparation method of ultra-large type carefully brilliant molybdenum flat target |
| CN104060206B (en) * | 2014-06-19 | 2016-06-29 | 洛阳科威钨钼有限公司 | A kind of preparation method of ultra-large type carefully brilliant molybdenum bar |
| CN104190937B (en) * | 2014-06-19 | 2017-01-04 | 洛阳科威钨钼有限公司 | A kind of preparation method of ultra-large type carefully brilliant molybdenum electrode |
| CN109097747A (en) * | 2018-09-12 | 2018-12-28 | 芜湖映日科技有限公司 | A kind of production method of cast target |
-
2008
- 2008-04-25 CN CNB2008101049861A patent/CN100566921C/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 纯钼板及钼合金热轧工艺探讨. 韩强，张相一.中国钼业，第25卷第1期. 2001 |
| 纯钼板及钼合金热轧工艺探讨. 韩强，张相一.中国钼业，第25卷第1期. 2001 * |
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| CN101259584A (en) | 2008-09-10 |
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Free format text: FORMER OWNER: CHENG YONGMEI Owner name: BEIJING TIAN-LONG TUNGSTEN + MOLYBDENUM CO., LTD. Free format text: FORMER OWNER: HU YANCAO Effective date: 20100804 |
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Free format text: CORRECT: ADDRESS; FROM: 100124 NO.100, PINGYUEYUAN, CHAOYANG DISTRICT, BEIJING CITY TO: 101117 ZHAOLI INDUSTRY ZONE, LUCHENG TOWN, TONGZHOU DISTRICT, BEIJING CITY |
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Effective date of registration: 20100804 Address after: The industrial zone in Beijing city called 101117 Tongzhou District Lucheng town Patentee after: Beijing Tian-Long Tungsten & Molybdenum Co., Ltd. Address before: 100124 Chaoyang District, Beijing Ping Park, No. 100 Co-patentee before: Cheng Yongmei Patentee before: Hu Yancao |
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Owner name: LUOYANG KEWEI MOLYBDENUM + TUNGSTEN CO., LTD. |
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Effective date of registration: 20111014 Address after: The industrial zone in Beijing city called 101117 Tongzhou District Lucheng town Co-patentee after: Luoyang Kewei Molybdenum & Tungsten Co.,Ltd. Patentee after: Beijing Tian-Long Tungsten & Molybdenum Co., Ltd. Address before: The industrial zone in Beijing city called 101117 Tongzhou District Lucheng town Patentee before: Beijing Tian-Long Tungsten & Molybdenum Co., Ltd. |
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Address after: The industrial zone in Beijing city called 101117 Tongzhou District Lucheng town Patentee after: BEIJING TIANLONG TUNGSTEN & MOLYBDENUM CO., LTD. Patentee after: Luoyang Kewei Molybdenum & Tungsten Co.,Ltd. Address before: The industrial zone in Beijing city called 101117 Tongzhou District Lucheng town Patentee before: Beijing Tian-Long Tungsten & Molybdenum Co., Ltd. Patentee before: Luoyang Kewei Molybdenum & Tungsten Co.,Ltd. |
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Address after: The industrial zone in Beijing city called 101117 Tongzhou District Lucheng town Patentee after: Aetna Tianlong molybdenum Technology Co. Ltd. Patentee after: Luoyang Kewei Molybdenum & Tungsten Co.,Ltd. Address before: The industrial zone in Beijing city called 101117 Tongzhou District Lucheng town Patentee before: BEIJING TIANLONG TUNGSTEN & MOLYBDENUM CO., LTD. Patentee before: Luoyang Kewei Molybdenum & Tungsten Co.,Ltd. |