CN203141013U - Welding clamp used for unlike metal diffusion welding - Google Patents
Welding clamp used for unlike metal diffusion welding Download PDFInfo
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- CN203141013U CN203141013U CN 201220219142 CN201220219142U CN203141013U CN 203141013 U CN203141013 U CN 203141013U CN 201220219142 CN201220219142 CN 201220219142 CN 201220219142 U CN201220219142 U CN 201220219142U CN 203141013 U CN203141013 U CN 203141013U
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- screw rod
- diffusion welding
- nut
- metal diffusion
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Abstract
The utility model discloses a welding clamp used for unlike metal diffusion welding, comprising an upper base plate (1), a lower base plate (2), screw rods (3), a centring core bar (4), and a nut (5). The upper base plate (1) and the lower base plate (2) have the same shape and are both disc-shaped. The disc is provided with three uniformly-arranged holes and a central hole. The screw rods (3) are respectively disposed in the three uniformly-arranged holes. Two ends of the screw rod (3) are respectively provided with a thread structure. The nut (5) cooperates with the thread structure, and the centring core bar (4) is disposed in the central hole. The welding clamp used for unlike metal diffusion welding is advantageous in that diffusion welding among sheet-shaped unlike metals can be satisfied, and welding operation is simple; the welding clamp can be applied in the producing of slow wave system radiating fin of ku wave band 100w air-cooled travelling wave tube, and can also be applied in diffusion welding among ring-shaped metals.
Description
Technical field
The utility model relates to the outer establishment of component field of travelling-wave tubes pipe in the microwave electrovacuum, especially relates to a kind of weld jig for different in nature metal diffusion welding (DW).
Background technology
Travelling-wave tubes is a kind of electron tube, is a kind of microwave signal amplifying device, and its structure comprises electron gun, slow wave system, collection level, delivery of energy structure and focusing structure etc.That its type of cooling can be divided into is air-cooled, conduction cooling and water-cooling structure, in air-cooled structure, need collect level and slow wave system to the position of its heat maximum and carry out high wind and dispel the heat.Collect level when design and making, considered heat dissipation problem, problem is little.But because the strong magnetic of its outside need carries out the focusing of electron beam, generally adopt pure iron and permanent magnet to realize focusing in slow wave system, radiator structure is difficult to realize in design.In order to increase heat dispersion, adopt the good copper of heat conductivility to be inserted in pure iron and the permanent magnet slit sometimes, adopt the mode of welding with copper and pure iron welding sometimes.Can guarantee during welding that the copper metal leads away the heat on the pure iron faster, the welding manner of often taking has soldering, soldering and diffusion welding (DW).
Soldering generally is usually used in the conduction cooling fin being welded on the base plate for one section, the fin other end and pure iron welding simultaneously, and shortcoming is big to thermal shock on every side when being welding, and the scolder trickling is wayward.Soldering is before the slow-wave component assembling fin and pure iron to be welded, and weld strength is good, and utilization rate is many, and shortcoming is that scolder trickles to the surperficial assembly precision that influences magnetic sheet of pure iron.Diffusion welding (DW) be with copper piece clip between pure iron, the external diameter of copper sheet is the heat radiation laminated structure, is convenient to the high wind heat radiation, often utilizes in air-cooled slow wave system, the internal diameter of copper sheet is identical with the pure iron internal diameter, big with the contact area of pure iron, being beneficial to derives heat, and advantage is open, do not influence fitted position, shortcoming is different in nature metal material characteristic difference, and coefficient of expansion difference is difficult to integrally welded.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of weld jig for different in nature metal diffusion welding (DW) at problems of the prior art, its objective is to solve the Welding Problems that different in nature metal Diffusion Welding is difficult to, guarantee the smooth implementation of different in nature metal Diffusion Welding.
The technical solution of the utility model is that the weld jig that this kind is used for different in nature metal diffusion welding (DW) comprises upper plate, lower shoe, screw rod, centering core bar and nut, the shape of described upper plate and lower shoe is identical, all are disc-shaped structures, disk is provided with three equally distributed holes and a centre bore, screw rod is installed in three equally distributed holes, and the two ends of screw rod are equipped with helicitic texture, described nut and this helicitic texture cooperatively interact, and described centering core bar is installed in the centre bore.
The material of described upper plate, lower shoe, screw rod and nut is the low-expansion metal molybdenum of high temperature.
The length of every section screw thread all is not less than 1/3 of screw rod total length on the described screw rod.
The weld jig that this kind is used for different in nature metal diffusion welding (DW) can satisfy the intermetallic diffusion welding (DW) of the sheet opposite sex, solve the problem of different in nature metal solder difficulty, welding operation is simple, can be applied in the slow wave system fin making of the air-cooled travelling-wave tubes of ku wave band 100W, can also be applied in the intermetallic Diffusion Welding of circulus.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of upper and lower base plate in the utility model.
Fig. 3 is the structural representation that assembles the weld jig of different in nature metal to be welded.
Fig. 4 is that single Diffusion Welding component part is placed sequential schematic.
In Fig. 1-4,1: upper plate; 2: lower shoe; 3: screw rod; 4: the centering core bar; 5: nut; 6: the first kinds of metals; 7: the second kinds of metals; 8: mica sheet; 9: base; 10: briquetting.
The specific embodiment
By structure shown in Fig. 1-2 as can be known, the weld jig that this kind is used for different in nature metal diffusion welding (DW) comprises upper plate 1, lower shoe 2, screw rod 3, centering core bar 4 and nut 5, the shape of upper plate 1 and lower shoe 2 is identical, all are disc-shaped structures, disk is provided with three equally distributed holes and a centre bore, and screw rod 3 is installed in three equally distributed holes, and the two ends of screw rod 3 are equipped with helicitic texture, nut 5 cooperatively interacts with this helicitic texture, and centering core bar 4 is installed in the centre bore.
The material of upper plate 1, lower shoe 2, screw rod 3 and nut 5 is the low-expansion metal molybdenum of high temperature.The length of every section screw thread all is not less than 1/3 of screw rod 3 total lengths on the screw rod 3.
By structure shown in Fig. 1-4 as can be known, utilize above-mentioned method of welding for the weld jig of different in nature metal diffusion welding (DW) to comprise:
1) will treat that first kind of metal 6 of different in nature metal of Diffusion Welding and second kind of metal 7 clean after, in 48 hours, assemble;
2) lower shoe 2 is placed on the base 9, centering core bar 4 is inserted the centre bore of lower shoes 2, screw rod 3 lower ends are screwed by nut 5 be placed in the lower shoe 2 corresponding holes;
3) first kind of metal 6 of Diffusion Welding and the second kind of metal 7 centering core bar 4 by weld jig inside is passed on the lower shoe 2 that is fixed on weld jig successively, order repeats successively according to the order of first kind of metal 6, second kind of metal 7, first kind of metal 6, mica sheet 8;
4) be placed on upper plate 1 on the different in nature metal of having put well and mica sheet 8 by centering core bar 4; Screw rod 3 is penetrated the hole of upper plate 1, and tighten fixing by nut 5;
5) place a briquetting 10 at upper plate 1, apply certain pressure at briquetting 10, screw three nuts 5 on the screw rod 3, cancellation pressure takes off briquetting 10, takes out centering core bar 4, can finish the assembling of Diffusion Welding assembly;
6) weld jig with the Diffusion Welding assembly that assembles is placed in the firing equipment, by certain process curve heating and cooling, can finish the Diffusion Welding of different in nature metal.
As a kind of specific embodiment of the present utility model, first kind of metal 6 is pure iron, and second kind of metal 7 is copper, and wherein the built-up time of copper and copper alloy is to finish in back 2 hours in cleaning.
When placing mica sheet 8, need be coated with one deck alcohol, alumina powder mixture at the metal of its contact.Prescription relation between alcohol, the alumina powder is: the alumina powder of 4-5g needs the alcohol of 10ml, and any prescription relation identical with this ratio.
In the utility model, the requirement of the processing technology of each structure is:
The processing of upper and lower base plate: material is high temperature low-expansion coefficient metal molybdenum, disc-shaped structure, and for keeping structural strength, thickness is greater than 12mm; Disk has three equally distributed holes and a centre bore, and equally distributed hole is the position of screw rod 3, and centre bore is the position of centering core bar 4.
The processing of screw rod: material is high temperature low-expansion coefficient metal molybdenum, and screw rod 3 passes three holes of base plate, and external diameter is smaller, and two sections of screw rod 3 are helicitic texture, and the length of helicitic texture all is not less than 1/3 of length overall; Screw rod 3 is three, and all there is nut 5 at every two ends.
The processing of centering core bar: material is stainless steel 1Cr18Ni9Ti, the elongate rod structure, and external diameter is more smaller than the centre bore of upper and lower base plate, and concrete size can be passed the centre bore of weld metal sheet with reference to the centre bore of weld metal.
The weld jig that this kind is used for different in nature metal diffusion welding (DW) can satisfy the intermetallic diffusion welding (DW) of the sheet opposite sex, welding operation is simple, can be applied in the slow wave system fin making of the air-cooled travelling-wave tubes of ku wave band 100W, can also be applied in the intermetallic Diffusion Welding of circulus.
Claims (3)
1. weld jig that is used for different in nature metal diffusion welding (DW), it is characterized in that: described weld jig comprises upper plate (1), lower shoe (2), screw rod (3), centering core bar (4) and nut (5), the shape of described upper plate (1) and lower shoe (2) is identical, all are disc-shaped structures, disk is provided with three equally distributed holes and a centre bore, screw rod (3) is installed in three equally distributed holes, and the two ends of screw rod (3) are equipped with helicitic texture, described nut (5) cooperatively interacts with this helicitic texture, and described centering core bar (4) is installed in the centre bore.
2. a kind of weld jig for different in nature metal diffusion welding (DW) according to claim 1, it is characterized in that: the material of described upper plate (1), lower shoe (2), screw rod (3) and nut (5) is the low-expansion metal molybdenum of high temperature.
3. a kind of weld jig for different in nature metal diffusion welding (DW) according to claim 1 and 2, it is characterized in that: the length of the last every section screw thread of described screw rod (3) all is not less than 1/3 of screw rod (3) total length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220219142 CN203141013U (en) | 2012-05-16 | 2012-05-16 | Welding clamp used for unlike metal diffusion welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220219142 CN203141013U (en) | 2012-05-16 | 2012-05-16 | Welding clamp used for unlike metal diffusion welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203141013U true CN203141013U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220219142 Expired - Fee Related CN203141013U (en) | 2012-05-16 | 2012-05-16 | Welding clamp used for unlike metal diffusion welding |
Country Status (1)
| Country | Link |
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| CN (1) | CN203141013U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699593A (en) * | 2012-05-16 | 2012-10-03 | 安徽华东光电技术研究所 | Welding fixture for diffusion welding of dissimilar metal and welding method thereof |
| CN106378526A (en) * | 2016-08-18 | 2017-02-08 | 中国科学院力学研究所 | Experimental device applicable to high-heating-rate diffusion welding |
| CN112705913A (en) * | 2020-12-21 | 2021-04-27 | 西安天力金属复合材料股份有限公司 | Method for processing large-size copper or copper alloy cooling plate |
| CN112756723A (en) * | 2020-12-30 | 2021-05-07 | 中国核电工程有限公司 | Internal pressure brazing method for double sleeves and double-sleeve welding assembly |
| CN112846482A (en) * | 2021-01-27 | 2021-05-28 | 东莞市达盛机电设计有限公司 | Diffusion welding fixture for coil framework |
| CN113145976A (en) * | 2021-04-22 | 2021-07-23 | 上海奕瑞光电子科技股份有限公司 | Brazing and mounting tool and sealing method |
-
2012
- 2012-05-16 CN CN 201220219142 patent/CN203141013U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699593A (en) * | 2012-05-16 | 2012-10-03 | 安徽华东光电技术研究所 | Welding fixture for diffusion welding of dissimilar metal and welding method thereof |
| CN102699593B (en) * | 2012-05-16 | 2015-04-22 | 安徽华东光电技术研究所 | Welding fixture for diffusion welding of dissimilar metal and welding method thereof |
| CN106378526A (en) * | 2016-08-18 | 2017-02-08 | 中国科学院力学研究所 | Experimental device applicable to high-heating-rate diffusion welding |
| CN106378526B (en) * | 2016-08-18 | 2018-12-21 | 中国科学院力学研究所 | A kind of experimental provision can be used for high heating rate Diffusion Welding |
| CN112705913A (en) * | 2020-12-21 | 2021-04-27 | 西安天力金属复合材料股份有限公司 | Method for processing large-size copper or copper alloy cooling plate |
| CN112705913B (en) * | 2020-12-21 | 2021-11-26 | 西安天力金属复合材料股份有限公司 | Method for processing large-size copper or copper alloy cooling plate |
| CN112756723A (en) * | 2020-12-30 | 2021-05-07 | 中国核电工程有限公司 | Internal pressure brazing method for double sleeves and double-sleeve welding assembly |
| CN112846482A (en) * | 2021-01-27 | 2021-05-28 | 东莞市达盛机电设计有限公司 | Diffusion welding fixture for coil framework |
| CN113145976A (en) * | 2021-04-22 | 2021-07-23 | 上海奕瑞光电子科技股份有限公司 | Brazing and mounting tool and sealing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20170516 |