CN103435275B - Sealing method of compressor terminal for glass and metal sealing - Google Patents
Sealing method of compressor terminal for glass and metal sealing Download PDFInfo
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- CN103435275B CN103435275B CN201310331294.1A CN201310331294A CN103435275B CN 103435275 B CN103435275 B CN 103435275B CN 201310331294 A CN201310331294 A CN 201310331294A CN 103435275 B CN103435275 B CN 103435275B
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Abstract
The invention discloses a sealing method of a compressor terminal for glass and metal sealing. The method is characterized by comprising the steps that the assembled to-be-sealed compressor terminal is placed in an eight-temperature-zone nitrogen protection sealing meshbeltfurnace, and sealed; 100L/h nitrogen and 5L/h oxygen are introduced into a high-temperature zone 1; 60L/h nitrogen and 5L/h oxygen are introduced into a high-temperature zone 2; 60L/h nitrogen and 1L/h oxygen are introduced into a high-temperature zone 3; and 200L/h nitrogen is introduced into other temperature zones. According to the method, metal and glass can be prevented from being nitrided; the nitridation is reduced on the premise that a sealing property of the glass is improved; nitridation embrittlement on the surfaces of the glass and the metal is reduced; and the sealing strength is improved.
Description
Technical field
The present invention relates to terminal method for sealing, specifically a kind of compressor terminal method for sealing for glass and metal sealing by fusing.
Background technology
The metal of fully closed domestic air conditioning and refrigerator and glass-sealed connection terminal (terminal stud); it is a vital part of refrigeration compressor; it is the method sealed by insulating glass; the iron covering be stamped to form by soft steel, 446 stainless steel needles to protect in gas sealing-in at the temperature of about 1000 degree to form by seal glass frit at nitrogen or (carbon monoxide+carbonic acid gas).
The Main Function of this part is sealing and insulation, prevent refrigrant leakage, draw point serves as the effect of conduction by sealed insulation glass. operationally can bear very high pressure due to compressor, conventional R22, the operating pressure of R134a refrigeration agent can more than 3Mpa, the refrigeration agent of R410 can more than 4.8Mpa, and for the carbon dioxide compressor of novel environment friendly, pressure even can more than 50Mpa.
Along with the world to environmental protection and energy saving require more and more higher, Novel cooling medium such as carbonic acid gas is progressively applied in Japan and American-European beginning as overcritical refrigerant. like this, the connection terminal welded together as compressor case will face many challenges.
This challenge is mainly from two aspects, and first is high performance sealing glass material, and second is exactly that the impact of high intermediate temperature sealing processing procedure on metal and glass material performance weakens, and directly reduces the reliability of connection terminal.
The high intermediate temperature sealing of current compressor wiring terminal is mainly protected in gas at nitrogen or (carbon monoxide+carbonic acid gas) and is completed; this protection gas can make metallic substance can not by severe oxidation; but we know; CO (carbon monoxide converter) gas is at high temperature except reducing metal oxide; Sweet natural gas incomplete combustion also produces carbonic acid gas while producing carbon monoxide; carbonic acid gas at high temperature reacts with the carbon in soft steel; thus making soft steel decarburization, decarburization and high temperature annealing significantly decline making the intensity of metal.
Another high-temperature sealing-in method is with nitrogen, nitrogen at high temperature can protect metal can not be excessively oxidated, but can problem be brought equally, we know, because nitrogen-atoms diameter is less, be easy to enter in the structure of other materials, especially at high temperature, be easy to infiltrate in metallic grain boundaries and inside the network body of glass, be called nitriding, nitriding is a kind of metallic surface reinforcing process, the nitriding of glass material is but a retroaction, make glass surface embrittlement, more seriously high temperature nitriding can weaken the sealing strength of glass and metal, thus reduce the air pressure resistance grade of connection terminal.
Summary of the invention
Technical problem to be solved: the object of the invention is the sintering novel process by a kind of innovation, solve intensity losses after the metal decarburization that current connection terminal two kinds of sintering process exist for a long time respectively, metal nitriding and glass nitriding rear surface fragility increase, and because nitriding reduces problem and the hidden danger of sealing strength.
Technical scheme: a kind of compressor terminal method for sealing for glass and metal sealing by fusing; it is characterized in that: by assembling, (1) treats that sealing-in compressor terminal is placed in eight warm area nitrogen protection sealing-in meshbeltfurnace sealing-ins; (2) in high-temperature zone 1, introduce nitrogen 100L/h and oxygen 5 L/h; nitrogen 60L/h and oxygen 5 L/h is introduced in high-temperature zone 2; in high-temperature zone 3, introduce nitrogen 60L/h and oxygen 1 L/h, in other warm area, introduce nitrogen 200L/h.Described oxygen is the purity oxygen of purity 99.99%.
Beneficial effect of the present invention: the present invention is owing to have employed technique scheme, in sealing-in process, different nitrogen and oxygen proportion are introduced in segmentation, the oxygen introducing suitable proportion in easy nitriding high-temperature zone stops the generation of metal and glass nitrogenize, under the prerequisite improving glass head seal, weaken nitriding phenomenon, the nitriding reducing glass and metallic surface is brittle, improves sealing strength.
Accompanying drawing explanation
Fig. 1 is eight warm area nitrogen protection sealing-in meshbeltfurnace square frame explanatory views.
In figure: 9 oxygen inlet tubes, 10 nitrogen introducing tube.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
See Fig. 1; a kind of compressor terminal method for sealing for glass and metal sealing by fusing; treat that sealing-in compressor terminal is placed in eight warm area nitrogen protection sealing-in meshbeltfurnace sealing-ins by what assemble; nitrogen 100L/h and oxygen 5 L/h is introduced in high-temperature zone 1; nitrogen 60L/h and oxygen 5 L/h is introduced in high-temperature zone 2; in high-temperature zone 3, introduce nitrogen 60L/h and oxygen 1 L/h, in other warm area, introduce nitrogen 200L/h.Described oxygen is the purity oxygen of purity 99.99%.
Part is realized the sintering oven of continus convergence in stove by the guipure that meshbeltfurnace is generally not protected by horse.Be mainly used in reduction and the pre-burning of electronic product in protective atmosphere or air of sintered metal product sintering and metal-powder, burn till or thermal treatment process.Whole plant is made up of body of heater, guipure transmission system and temperature control system three parts.Body of heater is made up of feed zone, pre-burning section, sintering stage, slow cooling section, water-cooled section and discharging section.Guipure transmission system is made up of high temperature resistant guipure, transmission mechanism etc.The travelling speed of guipure is regulated by frequency transformer, is configured with digital display type guipure speed measuring device; Can direct-reading guipure speed; Temperature control system is by thermopair. and digital display type INTELLIGENT PID REGULATOR and silicon controlled rectifier form, and form closed loop control system, can realize automatic accurate temperature controlling.Heating unit adopts FEC ceramic heating plate or ceramic heating rod.
Experiment test below.
1, material used: model is glass 150 of GST90-32, and model is 2K32 terminal iron covering 50 used, the SUS446 draw point of diameter 3.2 mm length 36.5 millimeters 150, and sintering fixture 7 overlaps.Respectively in addition to prepare by each 10 use comparing test of the connection terminal of same material uniform temp and time sealing-in under CO+ CO hybrid protection gas and nitrogen protection gas.
2, equipment: eight warm area nitrogen protection sealing-in meshbeltfurnaces one, the pure oxygen gas cylinder of purity 99.99%, reducing valve, spinner-type flowmeter, induction heat impact tester, hydraulic pressure test pump (range 20Mpa), each one of bubbling type gas-tight tester.
3, manufacture experimently:
(1), assemble 50 and treat seal sample;
(2), furnace temperature setting: 800---1000---1000---1000---800---600---450---300, furnace zone speed per minutes 100 millimeters;
(3), each gas inlet setting: high-temperature zone 1: nitrogen 100L/h+ oxygen 5 L/h, high-temperature zone 2: nitrogen 60L/h+ oxygen 5 L/h, high-temperature zone 3: nitrogen 60L/h+ oxygen: 1 L/h, other warm area: nitrogen 200L/h.
(4) 50 samples, after sealing-in cool afterwards and following contrast test made by other two groups of samples.Result is as follows:
。
Can the compatibility of result clearly from above contrast test result; the sample manufactured by CO+ CO protection method is due to decarburization; make the hydraulic pressure resistant degradation of product; the product of N2 method manufacture declines because the nitriding of metal and glass surface result in sealing strength; make sample heat shock resistance and hydraulic pressure resistant two degradation, occur a certain proportion of gas leakage respectively.
The present invention is only limitted to absolutely not these examples.The foregoing is only the good embodiment of the present invention, only for describing the present invention, the restriction to scope of the present invention can not be interpreted as.It should be pointed out that all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. the compressor terminal method for sealing for glass and metal sealing by fusing; it is characterized in that: by assembling, (1) treats that sealing-in compressor terminal is placed in eight warm area nitrogen protection sealing-in meshbeltfurnace sealing-ins; (2) in high-temperature zone 1, introduce nitrogen 100L/h and oxygen 5 L/h; nitrogen 60L/h and oxygen 5 L/h is introduced in high-temperature zone 2
In high-temperature zone 3, introduce nitrogen 60L/h and oxygen 1 L/h, in other warm area, introduce nitrogen 200L/h; Furnace temperature setting and sealing-in heating sequence are that high-temperature zone 1 is 800 degree, high-temperature zone 2 is 1000 degree, high-temperature zone 3 is 1000 degree.
2. a kind of compressor terminal method for sealing for glass and metal sealing by fusing according to claim 1, is characterized in that described oxygen is the purity oxygen of purity 99.99%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310331294.1A CN103435275B (en) | 2013-08-01 | 2013-08-01 | Sealing method of compressor terminal for glass and metal sealing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310331294.1A CN103435275B (en) | 2013-08-01 | 2013-08-01 | Sealing method of compressor terminal for glass and metal sealing |
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| Publication Number | Publication Date |
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| CN103435275A CN103435275A (en) | 2013-12-11 |
| CN103435275B true CN103435275B (en) | 2015-06-17 |
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| CN201310331294.1A Active CN103435275B (en) | 2013-08-01 | 2013-08-01 | Sealing method of compressor terminal for glass and metal sealing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108988099A (en) * | 2018-07-24 | 2018-12-11 | 深圳市南方源芯电气有限公司 | A kind of manufacturing method of sealed wiring column |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069332A (en) * | 1991-07-08 | 1993-02-24 | 气体产品与化学公司 | The nitrogen that utilizes non-low temperature process to produce at the scene prepares heat treated atmosphere |
| CN101531473A (en) * | 2009-04-03 | 2009-09-16 | 西安华泰有色金属实业有限责任公司 | Metal-glass sealing process |
| CN102034616A (en) * | 2009-10-08 | 2011-04-27 | Avx公司 | Hermetically sealed capacitor assembly |
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2013
- 2013-08-01 CN CN201310331294.1A patent/CN103435275B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069332A (en) * | 1991-07-08 | 1993-02-24 | 气体产品与化学公司 | The nitrogen that utilizes non-low temperature process to produce at the scene prepares heat treated atmosphere |
| CN101531473A (en) * | 2009-04-03 | 2009-09-16 | 西安华泰有色金属实业有限责任公司 | Metal-glass sealing process |
| CN102034616A (en) * | 2009-10-08 | 2011-04-27 | Avx公司 | Hermetically sealed capacitor assembly |
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