CN103361535A - Preparation of cermet rod, and cermet electrode subassembly - Google Patents
Preparation of cermet rod, and cermet electrode subassembly Download PDFInfo
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- CN103361535A CN103361535A CN2013103167789A CN201310316778A CN103361535A CN 103361535 A CN103361535 A CN 103361535A CN 2013103167789 A CN2013103167789 A CN 2013103167789A CN 201310316778 A CN201310316778 A CN 201310316778A CN 103361535 A CN103361535 A CN 103361535A
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- cermet
- rod
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Abstract
The invention discloses preparation of a cermet rod, and a cermet electrode subassembly. The preparation process of the cermet rod comprises: 1) fully mixing 60-70% by weight of a high-purity alpha-Al2O3 polycrystal alumina powder and 30-40% by weight of a nanometer molybdenum powder to form a mixed powder; 2) mixing 70-80% of the mixed powder and 20-30% by weight of polyethylene heated to 100-105 DEG C to form a slurry, granulating, and performing injection molding to form a cermet rod blank; and 3) immersing with chemicals and degreasing to remove polyethylene, then at the atmosphere of a low-temperature reducing gas, sintering to form a biscuit, performing vacuum sintering at high temperature to prepare the cermet rod as a main member of the cermet electrode subassembly. The two ends of the cermet rod are respectively fixedly equipped with one end of a niobium lead wire and one end of an electrode and an electrode rod, and the diameters of fixing welding points are respectively less than the diameter of the niobium lead wire and the diameter of the cermet rod. The cermet electrode subassembly helps to solve and guarantee sealing matching of a gas between the electrode assembly and an electric-arc-tube capillary, and to reduce environmental pollution caused by early-failed and discarded cermet halide lamps; and the cermet electrode subassembly is prolonged in service life to 20000 hours and improved in service life by more than 1 time, and is suitable for installation and use in large-power ceramet halide lamps.
Description
Technical field
The making of the electrode assemblie, particularly a kind of cermet rod that the present invention relates to a kind of making method of cermet rod and make with this bar and cermet electrodes assembly.
Background technology
Now the experiment proved that one of key that affects sintering metal halide lamp work-ing life, it namely is electric arc tube internal diameter capillaceous and interelectrode gap coupling, the electrode assemblie that uses at present, mostly be electrode, the molybdenum spiral, the composition of niobium lead-in wire, and electrode and kapillary sealing-in place, 3～4 millimeters parts of molybdenum spiral are soaked lid by scolder, the coefficient of expansion of molybdenum spiral and scolder in the ignition procedures of lamp, ceramic arc tube is capillaceous inconsistent, if can causing kapillary to blow, the excessive expansion of molybdenum spiral causes electric arc tube early failure, if too small, in the ignition procedures of lamp, the reaction of halogenide and niobium metal lead-in wire causes weld cracking, when reignition high pressure trigger niobium metal lead-in wire and the sparking of molybdenum spiral cause kapillary blast after electric arc tube early failure.
China Patent No. 200810163614.6 " dedicated electrode component for ceramic metal halide lamp, electric arc tube and manufacture method thereof ", the special electrode component that also provides a kind of cermet rod that is made into by novel materials to connect and compose with the Metallic rod of using with tungsten electrode bar and the feed of tungsten circle respectively.
The tungsten electrode processed that China Patent No. 200710020489.9 " preparation technology of porcelain metal halid lamp electrode assembly " is served as reasons and is located along the same line, transition molybdenum wire and niobium lead-in wire connect into, and cover has the structure of molybdenum spiral in the bar section of transition molybdenum wire and tungsten electrode processed.
Be that above-mentioned two patents still adopt the structure that is wound with the molybdenum circle in the molybdenum rod outside.
Summary of the invention
Technical problem to be solved by this invention is: making and cermet electrodes assembly that a kind of cermet rod is provided, make cermet rod by high-purity alpha-alumina, make the cermet electrodes assembly by cermet rod again, can control, guarantee the sealing-in matching problem between electrode assemblie and ceramic metal electric arc tube capillary bore, operational reliability is strong, can improve the quality that guarantees the electrode assemblie encapsulation region, prolong the work-ing life of lamp, environmental contamination reduction.
The present invention addresses the above problem the technical scheme that adopts: the making of cermet rod, and proportioning is by weight percentage weighed each raw material:
60～70%a-Al
2O
3Polycrystal aluminum oxide powder 30～40% nano Mo powders
20～30% macromolecular material polyethylene (PE) particle
1), high-purity and be 400～450 purpose a-Al with 60～70% procedure of processing:
2O
3Polycrystal aluminum oxide powder and 30～40% nano Mo powders fully mix the resulting mixture powder;
2), the mixture powder of 70～80% in the above-mentioned mixture powder that makes is taken out, fully mix the form slurry granulation with 20～30% the macromolecular material polyethylene (PE) that is heated to 100～105 ℃ again, be injection molded into the cermet rod blank;
3), soak 28～32 hours by in the chemicals dimethylbenzene, toluene, n-butyl acetate, vinyl acetic monomer, propyl carbinol, ethanol one or more after, polyethylene (PE) is removed in degreasing, 800～900 ℃ of low temperature are sintered into biscuit and form the sintering metal formed material at high temperature 1800-1900 ℃ through vacuum sintering in reducing gas hydrogen, make cermet rod 2.
The above-mentioned cermet rod that makes 2 is made the primary member of cermet electrodes assembly.
The cermet electrodes assembly, comprise electrode, battery lead rod 1, niobium lead-in wire 3, the fixing end of niobium lead-in wire 3 respectively at the two ends of cermet rod 2, and an end of electrode, battery lead rod 1, and fixedly the weld diameter respectively less than the diameter of niobium lead-in wire 3 and the diameter of cermet rod 2.
Described niobium lead-in wire, electrode, battery lead rod are placed in the mould, adopt laser high-temperature fusion technology to be weldingly fixed on respectively on the two ends of cermet rod 2, are welded to connect into cermet electrodes assembly whole on same straight line with three sections.
Compared with prior art, the invention has the advantages that: with the molybdenum spirane structure that is wrapped in the primary electrode assembly on the molybdenum rod, replace with cermet rod, former lamp is all inconsistent because of molybdenum spiral, scolder, the ceramic arc tube coefficient of expansion capillaceous in ignition procedures, therefore electrode assemblie and intercapillary sealing-in and gap coupling is difficult to be guaranteed, gap too Xiao Yi makes kapillary blow, ftracture, and the gap too halogenide in the headlight can see through gap and the niobium react with that goes between and cause weld cracking, corrosion.
Now with the cermet rod in the electrode assemblie, adopt the cermet material the same with the electric arc tube kapillary to make, also add molybdenum powder in the centre, make the electric conductivity of electrode assemblie identical with the Mo electric conductivity, the rate of expanding with heat and contract with cold of each electrode assemblie material of simultaneously electric arc tube kapillary sealing-in district is more or less the same, both solved and guaranteed the problem of electrode assemblie and the sealing-in of electric arc tube kapillary gap coupling, also prolonged the work-ing life of sintering metal halide lamp, reduce the early failure of sintering metal halide lamp and scrapped rear pollution on the environment, extend to 20000 hours work-ing life, improve the life-span more than one times, and can in 35～2000W high-power ceramic metal halide lamp, install and use.
Description of drawings
Fig. 1, structural representation of the present invention.
Fig. 2, use state reference map of the present invention (electric arc tube kapillary Local map).
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Proportioning is by weight percentage weighed each raw material:
60～70%a-Al
2O
3Polycrystal aluminum oxide powder 30～40% nano Mo powders
20～30% macromolecular material polyethylene (PE) particle
1), with 60～70% and be the high-purity a-Al of 400～450 purposes procedure of processing:
2O
3Polycrystal aluminum oxide powder and 30～40% nano Mo powders fully mix the resulting mixture powder;
2), the mixture powder of 70～80% in the mixture powder in above-mentioned the making is taken out, fully mix the form slurry granulation with 20～30% the macromolecular material polyethylene (PE) that is heated to 100～105 ℃ again, be injection molded into the cermet rod blank;
3), soak 28～32 hours by in the chemicals dimethylbenzene, toluene, n-butyl acetate, vinyl acetic monomer, propyl carbinol, ethanol one or more after, polyethylene (PE) is removed in degreasing, 800～900 ℃ of low temperature are sintered into biscuit in reducing gas hydrogen, and form the sintering metal formed material at high temperature 1800-1900 ℃ through vacuum sintering, make cermet rod 2.
Its electric conductivity of the cermet rod that makes is relative with the molybdenum electric conductivity consistent, and the coefficient of expansion is relative with the ceramic arc tube kapillary consistent again.
The above-mentioned cermet rod that makes 2 is made the primary member of cermet electrodes assembly.
The cermet electrodes assembly, comprise electrode, battery lead rod 1, niobium lead-in wire 3, the fixing end of niobium lead-in wire 3 respectively at the two ends of cermet rod 2, and an end of electrode, battery lead rod 1, and fixedly the weld diameter respectively less than the diameter of niobium lead-in wire 3 and the diameter of cermet rod 2.
Described niobium lead-in wire, electrode, battery lead rod are placed in the mould, adopt laser high-temperature fusion technology to be weldingly fixed on respectively on the two ends of cermet rod 2, with three sections cermet electrodes assemblies that are welded to connect into integral body on same straight line, as shown in Figure 1.
During use, this cermet electrodes assembly is put into kapillary 4 two ends of sintering metal electric arc tube, be packaged into one with scolder, scolder can soak not in 1/3～1/2 scope of cermet rod, as shown in Figure 2.
Claims (4)
1. cermet rod is characterized in that proportioning by weight percentage weighs each raw material:
60～70%a-Al
2O
3Polycrystal aluminum oxide powder 30～40% nano Mo powders
20～30% macromolecular material polyethylene (PE) particle.
1), high-purity and be 400～450 purpose a-Al with 60～70% 2. is exclusively used in the making method of claim 1 cermet rod, it is characterized in that procedure of processing:
2O
3Polycrystal aluminum oxide powder and 30～40% nano Mo powders fully mix the resulting mixture powder;
2), the mixture powder of 70～80% in the above-mentioned mixture powder that makes is taken out, fully mix the form slurry granulation with 20～30% the macromolecular material polyethylene (PE) that is heated to 100～105 ℃ again, be injection molded into the cermet rod blank;
3), soak 28～32 hours by in the chemicals dimethylbenzene, toluene, n-butyl acetate, vinyl acetic monomer, propyl carbinol, ethanol one or more after, polyethylene (PE) is removed in degreasing, 800～900 ℃ of low temperature are sintered into biscuit and form the sintering metal formed material at high temperature 1800-1900 ℃ through vacuum sintering in reducing gas hydrogen, make cermet rod (2).
3. a cermet electrodes assembly comprises electrode, battery lead rod (1), niobium lead-in wire (3), it is characterized in that cermet rod (2) is done the primary member of cermet electrodes assembly; The fixing end of niobium lead-in wire (3) respectively at the two ends of cermet rod (2), and an end of electrode, battery lead rod (1), and the weld diameter is respectively less than the diameter of niobium lead-in wire (3) and the diameter of cermet rod (2).
4. cermet electrodes assembly according to claim 3, it is characterized in that described niobium lead-in wire (3), electrode, battery lead rod (1) are placed in the mould, adopt laser high-temperature fusion technology to be weldingly fixed on respectively on the two ends of cermet rod (2), be welded to connect into cermet electrodes assembly whole on same straight line with three sections.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103167789A CN103361535A (en) | 2013-07-26 | 2013-07-26 | Preparation of cermet rod, and cermet electrode subassembly |
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| CN2013103167789A CN103361535A (en) | 2013-07-26 | 2013-07-26 | Preparation of cermet rod, and cermet electrode subassembly |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103849804A (en) * | 2014-03-01 | 2014-06-11 | 深圳市威勒达科技开发有限公司 | Non-radiative multi-component composite tungsten negative material for microwave oven magnetron and preparation process of negative material |
| CN105014017A (en) * | 2015-07-14 | 2015-11-04 | 中国科学院金属研究所 | Complex structure ceramic core combination technology |
| CN105256162A (en) * | 2015-11-06 | 2016-01-20 | 洛阳鹏飞耐磨材料股份有限公司 | Preparation method for metal ceramic composite |
| CN106112261A (en) * | 2016-08-01 | 2016-11-16 | 中国核动力研究设计院 | In a kind of quartz glass capillary, filled gold belongs to the long packaging technology of control and auxiliary mould thereof |
| CN110340554A (en) * | 2018-03-19 | 2019-10-18 | 上海亚尔光源有限公司 | A kind of welding method of four sections ceramic metal halogen lamp pole |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980353A (en) * | 2010-10-14 | 2011-02-23 | 潮州市灿源电光源有限公司 | Co-firing sealing high-efficiency ceramic lamp and preparation method thereof |
| CN102226245A (en) * | 2011-05-07 | 2011-10-26 | 刘颂辉 | Ceramal material, and application thereof in ceramic-to-metal sealed electrode |
-
2013
- 2013-07-26 CN CN2013103167789A patent/CN103361535A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980353A (en) * | 2010-10-14 | 2011-02-23 | 潮州市灿源电光源有限公司 | Co-firing sealing high-efficiency ceramic lamp and preparation method thereof |
| CN102226245A (en) * | 2011-05-07 | 2011-10-26 | 刘颂辉 | Ceramal material, and application thereof in ceramic-to-metal sealed electrode |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103849804A (en) * | 2014-03-01 | 2014-06-11 | 深圳市威勒达科技开发有限公司 | Non-radiative multi-component composite tungsten negative material for microwave oven magnetron and preparation process of negative material |
| CN103849804B (en) * | 2014-03-01 | 2016-08-31 | 深圳市威勒科技股份有限公司 | A kind of microwave oven magnetic radiationless multiple elements design tungsten cathode material and preparation technology thereof |
| CN105014017A (en) * | 2015-07-14 | 2015-11-04 | 中国科学院金属研究所 | Complex structure ceramic core combination technology |
| CN105014017B (en) * | 2015-07-14 | 2018-07-10 | 中国科学院金属研究所 | A kind of labyrinth ceramic core group technology |
| CN105256162A (en) * | 2015-11-06 | 2016-01-20 | 洛阳鹏飞耐磨材料股份有限公司 | Preparation method for metal ceramic composite |
| CN105256162B (en) * | 2015-11-06 | 2017-06-09 | 洛阳鹏飞耐磨材料股份有限公司 | The preparation method of cermet complex |
| CN106112261A (en) * | 2016-08-01 | 2016-11-16 | 中国核动力研究设计院 | In a kind of quartz glass capillary, filled gold belongs to the long packaging technology of control and auxiliary mould thereof |
| CN106112261B (en) * | 2016-08-01 | 2017-11-10 | 中国核动力研究设计院 | Filled gold category controls long packaging technology and its auxiliary mould in a kind of quartz glass capillary |
| CN110340554A (en) * | 2018-03-19 | 2019-10-18 | 上海亚尔光源有限公司 | A kind of welding method of four sections ceramic metal halogen lamp pole |
| CN110340554B (en) * | 2018-03-19 | 2021-09-03 | 上海亚尔光源有限公司 | Welding method for four ceramic metal halide lamp electrodes |
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Owner name: NINGBO YAMAO OPTOELECTRONICS CO., LTD. Free format text: FORMER OWNER: CAO MAOJUN Effective date: 20140918 |
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Effective date of registration: 20140918 Address after: ZTE road 315000 Zhejiang city of Ningbo province Fenghua Xikou No. 88 Applicant after: NINGBO YAMAO PHOTOELECTRIC CO., LTD. Address before: ZTE road 315502 Zhejiang city of Ningbo province Fenghua Xikou No. 88 Ningbo Yamao Lighting Electrical Appliance Co. Ltd. Applicant before: Cao Maojun |
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Application publication date: 20131023 |