CN111015105A - Manufacturing method of tungsten iridium crucible - Google Patents
Manufacturing method of tungsten iridium crucible Download PDFInfo
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- CN111015105A CN111015105A CN201911296946.6A CN201911296946A CN111015105A CN 111015105 A CN111015105 A CN 111015105A CN 201911296946 A CN201911296946 A CN 201911296946A CN 111015105 A CN111015105 A CN 111015105A
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- tungsten
- iridium
- crucible
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- ingot
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention discloses a manufacturing method of a tungsten-iridium crucible, belonging to the technical field of machining. The method comprises the following steps of 1) casting tungsten and iridium into a tungsten ingot and an iridium ingot respectively; 2) processing the tungsten ingot into a tungsten crucible substrate with a bulge on the inner wall of a ring, and processing the iridium ingot into the inner wall of an iridium crucible; 3) the tungsten crucible base body and the iridium crucible inner wall are made into the tungsten iridium crucible. According to the method, the ingot blank is formed by vacuum melting, the tungsten crucible substrate with the bulges on the inner wall of the ring and the inner wall of the iridium crucible are processed on the ingot blank in a machining mode, and the hot isostatic pressing mode is matched, so that the bonding capacity between the tungsten substrate and the inner wall of the iridium crucible is greatly improved, the service life is greatly prolonged, and the economic cost is reduced.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a manufacturing method of a tungsten-iridium crucible.
Background
The W-Ir crucible is mainly used as a high-temperature container for smelting rare earth metals, heating elements of induction furnaces, smelting quartz glass and the like in the glass and ceramic industry. Tungsten has a high specific gravity, high hardness, good thermal and electrical conductivity, heat resistance, wear resistance, corrosion resistance, low expansion at high temperatures and dimensional stability. Among all metals, tungsten has the highest melting point (up to 3380 ℃), the lowest vapor pressure and the highest tensile strength (at 1650 ℃), and the corrosion resistance of the alloy is very good, and most inorganic acids have little corrosion to the alloy; the alloy made of tungsten and iridium has further improved wear resistance, hardness, strength and heat resistance, thereby better ensuring the consistency of products and greatly saving the manufacturing cost. The bonding strength between the tungsten substrate and the iridium tube is an important index of the service life of the product, and the better the bonding strength, the better the high-temperature scouring resistance and the longer the service life of the product. The tungsten-iridium crucible in the prior art is mainly produced in two ways, one is to plate a layer of iridium on the surface of a tungsten substrate in an electroplating way, and the other is to produce the tungsten-iridium crucible on the tungsten substrate and an iridium tube in a powder metallurgy way. However, the tungsten-iridium crucibles produced by the two methods cannot ensure the bonding strength between the tungsten substrate and the iridium, so that the service life is short, and the economic cost is greatly increased.
Disclosure of Invention
Aiming at the problems, the invention provides a manufacturing method of a tungsten iridium crucible, which comprises the following steps:
1) respectively casting tungsten and iridium into a tungsten ingot and an iridium ingot;
2) processing the tungsten ingot in the step 1) into a tungsten crucible base body with a bulge on the inner wall of a ring, and processing the iridium ingot in the step 1) into the inner wall of an iridium crucible;
3) manufacturing the tungsten crucible substrate and the iridium crucible inner wall in the step 2) into a tungsten iridium crucible.
The casting mode in the step 1) is a vacuum melting mode.
The processing mode of the step 2) is a machining mode, and the inner diameter of the tungsten crucible base body is equal to the outer diameter of the inner wall of the iridium crucible.
The manufacturing method in the step 3) is a hot isostatic pressing mode.
A manufacturing method of a tungsten iridium crucible comprises the following steps:
1) respectively casting tungsten ingots and iridium ingots in a tungsten and iridium vacuum melting mode; size of tungsten ingot
Iridium ingot size
2) Machining the tungsten ingot in the step 1) into a tungsten crucible base body with a bulge on the inner wall of a ring, wherein the outer diameter of the tungsten crucible base body is 120mm, the inner diameter of the tungsten crucible base body is 115.5mm, and the bulge height of the inner wall of the ring is 0.5 mm;
machining the iridium ingot in the step 1) into the inner wall of an iridium crucible; the outer diameter of the inner wall of the iridium crucible is 115.50mm, the inner diameter of the iridium crucible is 113.5mm, and the inner diameter of the tungsten crucible base body is equal to the outer diameter of the inner wall of the iridium crucible;
3) and (3) manufacturing the tungsten crucible matrix and the inner wall of the iridium crucible in the step 2) into the tungsten iridium crucible by adopting a hot isostatic pressing mode, wherein the hot isostatic pressing temperature is 1500-1800 ℃, the air pressure is 200Mpa, and the heat is preserved for 2 hours.
The invention has the beneficial effects that:
1. the invention adopts vacuum melting to prepare an ingot blank, and the ingot blank is processed into a tungsten substrate and an iridium inner wall by a machining mode. By means of hot isostatic pressing, the bonding strength between the tungsten matrix and the iridium inner wall is guaranteed to be stronger, and the service life of the tungsten-iridium crucible is greatly prolonged.
2. The tungsten ingot is processed into the tungsten crucible matrix with the bulge on the inner wall of the ring, and the hot isostatic pressing mode is matched, so that the bonding capacity between the tungsten matrix and the iridium inner wall is greatly improved, and the service life is further prolonged.
3. The outer wall of the tungsten iridium crucible finished product manufactured by adopting the hot isostatic pressing mode is in the shape of the outer wall of a tungsten crucible substrate, the inner wall of the tungsten crucible finished product is in the shape of the inner wall of an iridium crucible, strong bonding strength is achieved between the tungsten substrate and the iridium inner wall, the inner wall is smooth, no depression or protrusion is generated, and the dumping of contents and the later cleaning process are facilitated.
Drawings
FIG. 1 is a schematic view of a tungsten iridium crucible of the present invention;
FIG. 2 is a schematic view of a tungsten iridium crucible of the present invention;
wherein: a-tungsten crucible base body, b-iridium crucible inner wall.
Detailed Description
A manufacturing method of a tungsten iridium crucible comprises the following steps:
1) respectively casting tungsten and iridium into a tungsten ingot and an iridium ingot in a vacuum melting mode;
2) machining the tungsten ingot in the step 1) into a tungsten crucible base body with a bulge on the inner wall of a ring, and machining the iridium ingot in the step 1) into the inner wall of an iridium crucible; the inner diameter of the tungsten crucible base body is equal to the outer diameter of the inner wall of the iridium crucible.
3) And (3) manufacturing the tungsten crucible matrix and the iridium crucible inner wall in the step 2) into the tungsten iridium crucible by adopting a hot isostatic pressing mode.
The invention is described in further detail below with reference to the following figures and specific examples:
example 1
The manufacturing method of the tungsten iridium crucible comprises the following steps
1) Respectively casting tungsten ingots and iridium ingots in a tungsten and iridium vacuum melting mode; size of tungsten ingot
Iridium ingot size
2) Machining the tungsten ingot in the step 1) into a tungsten crucible base body with a bulge on the inner wall of a ring, wherein the outer diameter of the tungsten crucible base body is 120mm, the inner diameter of the tungsten crucible base body is 115.5mm, and the bulge height of the inner wall of the ring is 0.5 mm;
machining the iridium ingot in the step 1) into the inner wall of an iridium crucible; the outer diameter of the inner wall of the iridium crucible is 115.50mm, the inner diameter of the iridium crucible is 113.5mm, and the inner diameter of the tungsten crucible base body is equal to the outer diameter of the inner wall of the iridium crucible;
3) and (3) manufacturing the tungsten crucible matrix and the inner wall of the iridium crucible in the step 2) into the tungsten iridium crucible by adopting a hot isostatic pressing mode, wherein the hot isostatic pressing temperature is 1500-1800 ℃, the air pressure is 200Mpa, and the heat is preserved for 2 hours. The outer wall of the tungsten iridium crucible finished product manufactured by adopting the hot isostatic pressing mode is in the shape of the outer wall of a tungsten crucible substrate, the inner wall of the tungsten crucible finished product is in the shape of the inner wall of an iridium crucible, strong bonding strength is achieved between the tungsten substrate and the iridium inner wall, the inner wall is smooth, no depression or protrusion is generated, and the dumping of contents and the later cleaning process are facilitated.
Claims (5)
1. The manufacturing method of the tungsten-iridium crucible is characterized by comprising the following steps of:
1) respectively casting tungsten and iridium into a tungsten ingot and an iridium ingot;
2) processing the tungsten ingot in the step 1) into a tungsten crucible base body with a bulge on the inner wall of a ring, and processing the iridium ingot in the step 1) into the inner wall of an iridium crucible;
3) manufacturing the tungsten crucible substrate and the iridium crucible inner wall in the step 2) into a tungsten iridium crucible.
2. The method for manufacturing the tungsten-iridium crucible as claimed in claim 1, wherein the casting mode in the step 1) is a vacuum melting mode.
3. The method for manufacturing the tungsten-iridium crucible as claimed in claim 1, wherein the processing mode in the step 2) is a machining mode, the inner diameter of the tungsten crucible base body is equal to the outer diameter of the inner wall of the iridium crucible, the height of the bulge of the inner wall of the ring is 0.5mm, and the thickness of the iridium crucible is 1 mm.
4. The method for manufacturing the tungsten-iridium crucible as claimed in claim 1, wherein the manufacturing method in the step 3) is a hot isostatic pressing method.
5. The method for manufacturing the tungsten-iridium crucible as claimed in claim 1, wherein the method comprises the following steps:
1) respectively casting tungsten ingots and iridium ingots in a tungsten and iridium vacuum melting mode; size of tungsten ingot
Iridium ingot size
2) Machining the tungsten ingot in the step 1) into a tungsten crucible base body with a bulge on the inner wall of a ring, wherein the outer diameter of the tungsten crucible base body is 120mm, the inner diameter of the tungsten crucible base body is 115.5mm, and the bulge height of the inner wall of the ring is 0.5 mm;
machining the iridium ingot in the step 1) into the inner wall of an iridium crucible; the outer diameter of the inner wall of the iridium crucible is 115.50mm, the inner diameter of the iridium crucible is 113.5mm, and the inner diameter of the tungsten crucible base body is equal to the outer diameter of the inner wall of the iridium crucible;
3) and (3) manufacturing the tungsten crucible matrix and the inner wall of the iridium crucible in the step 2) into the tungsten iridium crucible by adopting a hot isostatic pressing mode, wherein the hot isostatic pressing temperature is 1500-1800 ℃, the air pressure is 200Mpa, and the heat is preserved for 2 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911296946.6A CN111015105A (en) | 2019-12-17 | 2019-12-17 | Manufacturing method of tungsten iridium crucible |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911296946.6A CN111015105A (en) | 2019-12-17 | 2019-12-17 | Manufacturing method of tungsten iridium crucible |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114346245A (en) * | 2020-09-27 | 2022-04-15 | 安泰天龙钨钼科技有限公司 | Long-life rare earth molybdenum crucible and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01242482A (en) * | 1988-03-23 | 1989-09-27 | Tanaka Kikinzoku Kogyo Kk | Refractory crucible |
| JPH0283293A (en) * | 1988-09-20 | 1990-03-23 | Tanaka Kikinzoku Kogyo Kk | Production of thin-walled iridium crucible |
| JP2000344593A (en) * | 1999-06-02 | 2000-12-12 | Nippon Telegr & Teleph Corp <Ntt> | Crucible for growing single crystal |
| CN102528273A (en) * | 2011-12-28 | 2012-07-04 | 西安西工大超晶科技发展有限责任公司 | Method for preparing dissimilar metal composite joint |
| CN103047860A (en) * | 2011-10-14 | 2013-04-17 | 重庆四联光电科技有限公司 | Double-crucible induction heating furnace |
| CN104625389A (en) * | 2014-12-22 | 2015-05-20 | 有研亿金新材料有限公司 | Welding method of aluminum alloy sputtering target material for integrated circuit package material |
| CN204959089U (en) * | 2015-09-23 | 2016-01-13 | 西安格美金属材料有限公司 | Sintering tungsten crucible |
-
2019
- 2019-12-17 CN CN201911296946.6A patent/CN111015105A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01242482A (en) * | 1988-03-23 | 1989-09-27 | Tanaka Kikinzoku Kogyo Kk | Refractory crucible |
| JPH0283293A (en) * | 1988-09-20 | 1990-03-23 | Tanaka Kikinzoku Kogyo Kk | Production of thin-walled iridium crucible |
| JP2000344593A (en) * | 1999-06-02 | 2000-12-12 | Nippon Telegr & Teleph Corp <Ntt> | Crucible for growing single crystal |
| CN103047860A (en) * | 2011-10-14 | 2013-04-17 | 重庆四联光电科技有限公司 | Double-crucible induction heating furnace |
| CN102528273A (en) * | 2011-12-28 | 2012-07-04 | 西安西工大超晶科技发展有限责任公司 | Method for preparing dissimilar metal composite joint |
| CN104625389A (en) * | 2014-12-22 | 2015-05-20 | 有研亿金新材料有限公司 | Welding method of aluminum alloy sputtering target material for integrated circuit package material |
| CN204959089U (en) * | 2015-09-23 | 2016-01-13 | 西安格美金属材料有限公司 | Sintering tungsten crucible |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114346245A (en) * | 2020-09-27 | 2022-04-15 | 安泰天龙钨钼科技有限公司 | Long-life rare earth molybdenum crucible and preparation method thereof |
| CN114346245B (en) * | 2020-09-27 | 2023-06-20 | 安泰天龙钨钼科技有限公司 | Long-life rare earth molybdenum crucible and preparation method thereof |
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