CN105234569A - Hydrogen furnace welding method - Google Patents
Hydrogen furnace welding method Download PDFInfo
- Publication number
- CN105234569A CN105234569A CN201510668957.8A CN201510668957A CN105234569A CN 105234569 A CN105234569 A CN 105234569A CN 201510668957 A CN201510668957 A CN 201510668957A CN 105234569 A CN105234569 A CN 105234569A
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- weldment
- stove
- welding
- solder
- metal
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
The invention provides a hydrogen furnace welding method. In virtue of an in-hydrogen-furnace temperature distribution function curve determined by an experiment, according to the welding requirement of a welding piece, a welding piece racking position is considered, the welding flux with different melting points are racked on welding piece welding lines in corresponding temperature areas, and multi-piece, mixed-installation, short-time and same-furnace welding under various complex conditions such as metal-metal, metal-nonmetal, gas tightness welding and non-gas-tightness welding is achieved. According to the hydrogen furnace welding method, the in-furnace space using rate, the energy using rate and the production efficiency are improved.
Description
Technical field
The present invention relates to welding method, relate to a kind of hydrogen stove welding method specifically.
Background technology
Hydrogen stove is the requisite welding equipment of vacuum electron device manufacturing industry.Conventional soldering techniques generally once can only use a kind of solder to complete the weldment of same welding requirements.Production efficiency is low, cost is high, equipment and energy utilization rate low.
Summary of the invention
The invention provides a kind of hydrogen stove welding method: the mixing of the weldment of identical or different material, identical or different welding requirements is shelved in Lu Nei relevant temperature district by the solder by means of different melting points, realizes the welding of same stove at short notice.
The present invention adopts following technical scheme: a kind of hydrogen stove welding method, comprises the following steps:
A. described hydrogen stove is vertical hydrogen stove or horizontal hydrogen stove, by expected furnace space utilization rate, determines to mix the furnace space position of placing different weldment; It is in stove, place metal weld with stove with nonmetal weldment, air-tightness weldment, non-airtight weldment with metal weldment, metal that different weldment is placed in described mixing;
B. with reference to in-furnace temperature distribution function curve, the welding temperature scope of furnace space position is determined;
C. by determined welding temperature scope, the solder of lower than this scope 20 DEG C ~ 60 DEG C of fusing point is selected;
D. weldment is shelved and is welded:
A. consider that weldment shelves position in stove, shelves on the weld seam being in high-temperature region by dystectic solder, shelves on the weld seam being in low-temperature space successively by the solder of low melting point;
B. there is the weldment of air-tightness welding requirements, shelve at the manageable position of in-furnace temperature;
C. according to design feature, thermal capacity, the considerations of thermal conductivity of weldment, control heating rate and make the solder being in different temperatures district substantially can reach synchronous fusing.If low-temperature space solder first melts, illustrate heated up slow, if high-temperature region solder first melts, illustrate heat up too fast;
D. the control of temperature retention time: according to the strong and weak factor of effect of weldment volume, weld gap and weld seam and solder, control temperature retention time makes solder reach to melt completely, have the weldment that air-tightness is welded, carry out emphasis prosecution to air-tightness weld seam;
E. the control of rate of temperature fall: according to the difference of material thermal expansion coefficient, observes all solder fusings thorough, wandering evenly rear cooling, and weldment takes out weldment with after stove cooling;
E. inspection and acceptance:
A. butt-welding fitting carries out visual inspection, and weldment is undeformed, and weld seam is without show-through, and solder is without accumulation;
B. hunt leak to air-tightness weldment, the examination of high vacuum helium is not leaked.
Described steps A mixes the different weldment of placement and also can weld with stove with metal weldment for placing metal in stove; Or metal welds with stove with nonmetal weldment; Or metal welds with stove with nonmetal weldment with metal, metal; Or in stove, place air-tightness weldment weld with stove; Or non-airtight weldment welds with stove; Or air-tightness, non-airtight weldment weld with stove.
Above-mentioned solder shelves the solder of corresponding fusing point according to in-furnace temperature distribution function curve butt-welding fitting.
Above-mentioned for there being the weldment of air-tightness welding requirements to shelve there being the weldment of air-tightness welding requirements the position easily monitored at in-furnace temperature.
The invention has the beneficial effects as follows: use the solder of different melting points to make multiple metal and metal simultaneously; Or metal and nonmetal; Or metal and metal and metal and nonmetal weldment; Or air-tightness weldment; Or non-airtight weldment; Or air-tightness and non-airtight weldment, realize in the different temperatures district of hydrogen stove (vertical or horizontal hydrogen stove) welding with stove.Invention increases hydrogen stove production efficiency and energy utilization rate.Can simultaneously by multiple identical or different material, the weldment of identical or different welding requirements realizes welding with stove.
Accompanying drawing explanation
Fig. 1. vertical hydrogen furnace body space coordinates of the present invention;
Fig. 2. vertical hydrogen furnace body space temperature function curve of the present invention;
Fig. 3. horizontal hydrogen furnace body space coordinates of the present invention;
Fig. 4. horizontal hydrogen furnace body space temperature function curve of the present invention.
Detailed description of the invention
embodiment 1
A kind of hydrogen stove welding method, 100kW unit vertical hydrogen stove welding example: the parts of this example welding have: 3 certain model magnetron porcelain cartridge module (metal and ceramic welding, air-tightness is had to require), 2 certain model magnetron cavity components (metal and metal solder, air-tightness is had to require), 4 certain model magnetron waveguide assemblies (metal and metal solder require without air-tightness).
In the vertical hydrogen stove of 100kW, ground floor shelves 4 waveguide assemblies from bottom to top, and the second layer shelves 2 cavity components, and third layer shelves 3 porcelain cartridge modules.Mixer element volume is about 20cm
2× 55cm, shelves at the radial 16cm ~ 35cm of body of heater, axial 30cm ~ 75cm place.With reference to figure 2 vertical hydrogen stove in-furnace temperature distribution function curve, porcelain cartridge module shelves Ag (99.99), (fusing point: 960 DEG C).Cavity components shelves solder AgCu(72; 28), (fusing point: 779 DEG C).Waveguide assemblies shelves solder AgCuSn(62; 28; 10), (fusing point: 660 DEG C ~ 700 DEG C).
Detecting weldment upper temp after heating rate 30 DEG C/min, 30min is 780 DEG C, and temperature of lower is 550 DEG C, middle part temperature outside 750 DEG C, central temperature 580 DEG C.Then detecting weldment upper temp after being incubated 3min is 850 DEG C, and temperature of lower is 670 DEG C, middle part temperature outside 880 DEG C, central temperature 750 DEG C.Now AgCuSn(62; 28; 10) solder starts fusing, AgCu(72 after 2min; 28) start fusing, after 1min, Ag (99.99) starts fusing.After continuing insulation 1min, key monitoring porcelain cartridge module and cavity components solder scatter situation.Observe all solder fusings thorough, wandering evenly rear cooling.Cooling completes in 3min.Weldment is with after stove cooling 4h, and furnace temperature is down to less than 50 DEG C, and take out weldment visual inspection, weldment should be undeformed, and weld seam is without show-through, and solder is without accumulation.The simple leak detector helium inspection of helium (leak rate≤10
-10pam
3/ s) porcelain cartridge module, cavity components should be air tight.Whole welding process used time 4.5h, when shortening little more than 2 than conventional soldering techniques, complete weldment 9, assay is all qualified.
embodiment 2
A kind of hydrogen stove welding method, 25kW unit horizontal hydrogen stove welding example: the parts of this example welding have: 3 certain model magnetron tuning plug assembly (metal and ceramic welding, require without air-tightness), 2 certain model magnetron cover plate assemblies (metal and metal solder have air-tightness to require).
In the vertical hydrogen stove of 25kW, 3 tuning plug assemblies are shelved at middle part, and forward end shelves 2 cover plate assemblies.Mixer element volume is about 4cm
2× 50cm, shelves at the radial 1cm ~ 3cm of body of heater, axial 60cm ~ 90cm place.With reference to figure 4 vertical hydrogen stove in-furnace temperature distribution function curve, Ag (99.99) shelved by tuning plug assembly, (fusing point: 960 DEG C).Cover plate assembly shelves AgCu(72; 28), (fusing point: 779 DEG C).
Detecting middle part weld seam temperature after heating rate 30 DEG C/min, 20min is 750 DEG C, and front end weld seam temperature is 500 DEG C.Then detecting weldment middle portion temperature after being incubated 3min is 860 DEG C, and head temperature is 650 DEG C.After continuing insulation 2min, detecting weldment middle portion temperature is 950 DEG C, and head temperature is 780 DEG C.Now AgCu(72; 28) solder starts fusing, and after 1min, Ag (99.99) starts fusing.Continue insulation 30s, emphasis monitoring cover board of front end assembly solder scatters situation.Observe all solder fusings thorough, wandering evenly rear cooling.Cooling completes in 1min.Weldment is with after stove cooling 3h, and furnace temperature is down to less than 50 DEG C, and take out weldment visual inspection, weldment should be undeformed, and weld seam is without show-through, and solder is without accumulation.The simple leak detector helium inspection of helium (leak rate≤10
-10pam
3/ s) cover plate assembly should be air tight.The whole welding process used time, complete weldment 5, assay was all qualified less than 4h.
Claims (5)
1. a hydrogen stove welding method, is characterized in that: specifically comprise the following steps
A. described hydrogen stove is vertical hydrogen stove or horizontal hydrogen stove, by expected furnace space utilization rate, determines to mix the furnace space position of placing different weldment; It is in stove, place metal weld with stove with nonmetal weldment, air-tightness weldment, non-airtight weldment with metal weldment, metal that different weldment is placed in described mixing;
B. with reference to in-furnace temperature distribution function curve, the welding temperature scope of furnace space position is determined;
C. by determined welding temperature scope, the solder of lower than this scope 20 DEG C ~ 60 DEG C of fusing point is selected;
D. weldment is shelved and is welded:
A. in stove, shelve position according to weldment, dystectic solder is shelved on the weld seam being in high-temperature region, successively the solder of low melting point is shelved on the weld seam being in low-temperature space;
B. will the weldment of air-tightness welding requirements be had to shelve at the manageable position of in-furnace temperature;
C. according to design feature, thermal capacity, the considerations of thermal conductivity of weldment, control heating rate and make the solder being in different temperatures district reach synchronous fusing;
D. the control of temperature retention time: according to the strong and weak factor of effect of weldment volume, weld gap and weld seam and solder, control temperature retention time makes solder reach to melt completely, to the prosecution of air-tightness weld seam emphasis;
E. the control of rate of temperature fall: according to the difference of material thermal expansion coefficient, observes all solder fusings thorough, wandering evenly rear cooling, and weldment takes out weldment with after stove cooling;
E. inspection and acceptance:
A. butt-welding fitting carries out visual inspection, and weldment is undeformed, and weld seam is without show-through, and solder is without accumulation;
B. hunt leak to air-tightness weld seam, the examination of high vacuum helium is not leaked.
2. a kind of hydrogen stove welding method as claimed in claim 1, is characterized in that: the mixing of steps A is placed different weldment and in stove, placed metal weld with stove with metal weldment; Or metal welds with stove with nonmetal weldment; Or metal welds with stove with nonmetal weldment with metal, metal.
3. a kind of hydrogen stove welding method as claimed in claim 1, is characterized in that: the mixing of steps A is placed different weldment and in stove, placed air-tightness weldment weld with stove; Or non-airtight weldment welds with stove; Or air-tightness, non-airtight weldment weld with stove.
4. a kind of hydrogen stove welding method as described in any one of claim 1-3, is characterized in that: described solder shelves the solder of corresponding fusing point according to in-furnace temperature distribution function curve butt-welding fitting.
5. a kind of hydrogen stove as claimed in claim 4 is with stove welding method, it is characterized in that: shelve there being the weldment of air-tightness welding requirements the position easily monitored at in-furnace temperature for there being the weldment of air-tightness welding requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510668957.8A CN105234569A (en) | 2015-10-13 | 2015-10-13 | Hydrogen furnace welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510668957.8A CN105234569A (en) | 2015-10-13 | 2015-10-13 | Hydrogen furnace welding method |
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| Publication Number | Publication Date |
|---|---|
| CN105234569A true CN105234569A (en) | 2016-01-13 |
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| CN201510668957.8A Pending CN105234569A (en) | 2015-10-13 | 2015-10-13 | Hydrogen furnace welding method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06323757A (en) * | 1993-05-13 | 1994-11-25 | Furukawa Electric Co Ltd:The | Nitrogen gas atmosphere heating apparatus |
| US20030222126A1 (en) * | 2002-03-29 | 2003-12-04 | Fuji Electric Co., Ltd. | Method of manufacturing semiconductor device |
| CN201023166Y (en) * | 2007-02-13 | 2008-02-20 | 安徽华东光电技术研究所 | Improved braze hydrogen furnace |
| CN101690987A (en) * | 2009-08-30 | 2010-04-07 | 美的集团有限公司 | Magnetron assembling and welding process and welding material thereof |
| CN104117750A (en) * | 2014-07-17 | 2014-10-29 | 中国科学院近代物理研究所 | Four-airfoil-type radio frequency quadrupole-field accelerator cavity hydrogen furnace brazing method |
-
2015
- 2015-10-13 CN CN201510668957.8A patent/CN105234569A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06323757A (en) * | 1993-05-13 | 1994-11-25 | Furukawa Electric Co Ltd:The | Nitrogen gas atmosphere heating apparatus |
| US20030222126A1 (en) * | 2002-03-29 | 2003-12-04 | Fuji Electric Co., Ltd. | Method of manufacturing semiconductor device |
| CN201023166Y (en) * | 2007-02-13 | 2008-02-20 | 安徽华东光电技术研究所 | Improved braze hydrogen furnace |
| CN101690987A (en) * | 2009-08-30 | 2010-04-07 | 美的集团有限公司 | Magnetron assembling and welding process and welding material thereof |
| CN104117750A (en) * | 2014-07-17 | 2014-10-29 | 中国科学院近代物理研究所 | Four-airfoil-type radio frequency quadrupole-field accelerator cavity hydrogen furnace brazing method |
Non-Patent Citations (1)
| Title |
|---|
| 何擎: "立式氢炉焊接技术的研究及运用", 《真空电子技术》 * |
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Application publication date: 20160113 |
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