CN101428382A - Welding fixture - Google Patents
Welding fixture Download PDFInfo
- Publication number
- CN101428382A CN101428382A CNA2008102430691A CN200810243069A CN101428382A CN 101428382 A CN101428382 A CN 101428382A CN A2008102430691 A CNA2008102430691 A CN A2008102430691A CN 200810243069 A CN200810243069 A CN 200810243069A CN 101428382 A CN101428382 A CN 101428382A
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- CN
- China
- Prior art keywords
- lower mould
- graphite pads
- alloy
- high temperature
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000003466 welding Methods 0.000 title abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 27
- 239000010439 graphite Substances 0.000 claims abstract description 27
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 19
- 239000000956 alloy Substances 0.000 claims abstract description 19
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims 1
- 238000005476 soldering Methods 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910000990 Ni alloy Inorganic materials 0.000 description 3
- 229910000601 superalloy Inorganic materials 0.000 description 3
- 229910000531 Co alloy Inorganic materials 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 235000006708 antioxidants Nutrition 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Clamps And Clips (AREA)
Abstract
The invention relates to a welding clamp, which aims to provide a high-temperature and high-pressure resistant welding clamp. The invention adopts the technical scheme that the welding clamp comprises an upper die, a lower die and a two-layer graphite pad arranged between the upper die and the lower die, screw holes are formed on the upper die, on the lower die and on the graphite pad, the upper die, the lower die and the graphite pad are connected together through bolts corresponding to the screw holes, and the upper die, the lower die and the graphite pad are fixed at both ends of the bolts through nuts; in addition, the welding clamp is characterized in that the upper die and the lower die are made of high-temperature alloy.
Description
Technical field
The present invention relates to a kind of soldering appliance, be specifically related to a kind of high-temperature soldering anchor clamps.
Background technology
Some visual plants in fields such as petrochemical industry, refrigeration, medicine, atomic energy, Aero-Space, solar energy need to relate to high-temperature soldering in the mill, and used weld jig needs heat-resisting quantity, barotolerance, corrosion resistance, processability and ductility in this class welding.Present weld jig comprises the upper and lower mould of stainless steel and is located at graphite pads between the upper and lower mould, and bolt links together upper and lower mould and graphite pads, and nut compresses upper and lower mould and graphite pads at the two ends of bolt.Because the upper and lower mould of existing anchor clamps is generally stainless steel, non-refractory and high pressure, incompatibility high-temperature soldering.So need a kind of anchor clamps of high temperature resistant and high pressure at present, adapt to the needs of high-temperature soldering.
Summary of the invention
Purpose of the present invention overcomes the defective of prior art, and a kind of weld jig of high temperature resistant and high pressure is provided.
A kind of weld jig, comprise upper and lower mould and be located at two-layer graphite pads between the upper and lower mould, described upper and lower mould and graphite pads are provided with screw, with the screw corresponding bolts upper and lower mould and graphite pads are linked together, nut is in fixing upper and lower mould in the two ends of bolt and graphite pads, and described upper and lower mould is made by high temperature alloy.
Above-mentioned high temperature alloy is meant that with iron, nickel, cobalt be base, a metalloid material that can long-term work under the high temperature more than 600 ℃ and certain stress effect; And have a higher high temperature strength, good anti-oxidant and corrosion resistance, combination properties such as good fatigue behaviour, fracture toughness.High temperature alloy is single austenite structure, have favorable tissue stability and dependability at various temperatures, based on above-mentioned performance characteristics, and the alloying level of high temperature alloy is higher, being otherwise known as " superalloy ", is a kind of important materials that is widely used in Aeronautics and Astronautics, oil, chemical industry, naval vessel.Divide by matrix element, high temperature alloy is divided into high temperature alloys such as iron-based, Ni-based, cobalt-based again.The iron-base superalloy serviceability temperature generally can only reach 750～780 ℃, for the heat-resistant part that uses under higher temperature, then adopts the Ni-based and refractory metal alloy for base.
Preferred nickel-base alloy among the present invention, if is standard, and the maximum temperature that can bear of nickel alloy at present with the 150MPA-100H creep rupture strength〉1100 ℃, and cobalt alloy is about 950 ℃, the alloy of iron-based＜850 ℃, promptly nickel-base alloy correspondingly exceeds about 150 ℃ to 250 ℃.Compare with ferroalloy, the advantage of nickel alloy is: operating temperature is higher, and tissue is stable, harmful to reach resistance to oxidation mutually less, corrosion resistance is strong.Compare with cobalt alloy, nickel alloy can be worked under higher temperature and stress.
As a further improvement on the present invention, be provided with spring on the bolt of nut and upper and lower mould end face, the size of described spring is pressed the needed pretightning force of bolt and is determined.Bolt pretightening is:
Wherein, T is the moment of torsion that screws nut, and d is footpath in the bolt thread.
In the welding process, it is the same important with time, these two parameters of temperature of guaranteeing welding to give the workpiece certain pressure, have only pressure certain, could guarantee relative position fixing of welding work pieces, thereby guarantee the quality of welding, pressure given in the past just guarantees that by bolt, nut screw thread pair has certain moment of friction, has produced pretightning force by screw thread pair and has obtained.In invention, welding rod is contained on the contacted surface of workpiece soldered in the weld jig, when arriving the temperature of welding, welding rod is to melt, at this moment, originally the thickness of the workpiece of measuring will reduce, if directly use bolt without spring, the words that nut is fixing, thereby between nut and workpiece produce pretightning force that relative space make bolt and to the pressure of workpiece will reduce because the thickness of workpiece reduces to make this moment, this pressure that occurs in the welding process reduces the variation that phenomenon might make the relative position of workpiece be subjected to displacement, thereby the quality of weldment is affected, has reduced yield rate, increased cost.And behind the use spring, because pretightning force is to the extruding of spring, (F represents the elastic force of spring by formula F=kx, x is the length that spring elongates or shortens, k is the stiffness factor of spring) can calculate the numerical values recited of x, and the thickness minimizing of workpiece can make the numerical value of this parameter of x also reduce in the welding process, though F is because the pressure that F=kx reduces workpiece reduces, but because the flexible nut that makes of spring itself, not having to produce the space because of the fusing of welding rod between spring and workpiece makes pretightning force reduce the pressure of workpiece, guarantee the relative fixed of the position of workpiece in the welding process, helped to guarantee welding quality and yield rate.
High temperature alloy is adopted in the manufacturing of weld jig of the present invention, and high temperature alloy serviceability temperature scope height has higher intensity is arranged under serviceability temperature, good anti-oxidant and corrosion resistance ability.Adopt this kind weld jig can obtain intensity height, clamping quality and reach characteristics such as height in service life well, guaranteed the high-temperature soldering quality, whole cost is lower.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
The specific embodiment
Below in conjunction with accompanying drawing invention is described further.
With reference to accompanying drawing 1, a kind of weld jig 10, comprise patrix 4, the counterdie 9 of nickel-base alloy and be located at last graphite pads 5 and following graphite pads 8 between patrix 4, the counterdie 9, be respectively equipped with screw 11 on patrix 4, counterdie, 9 graphite pads 5 and the following graphite pads 8, with screw corresponding bolts 1 patrix 4, counterdie 9, graphite pads 5 and following graphite pads 8 are linked together, nut 2 the two ends of bolt 1 fixedly patrix 4, counterdie 9, on graphite pads 5 and following graphite pads 8, on the bolt 1 between nut 2 and patrix 4, counterdie 9 end faces, be provided with spring 3.Soldered last workpiece 6 and following workpiece 7 are placed between graphite pads 5 and the following graphite pads 8.
Wherein: patrix 4 and counterdie 9 are determined size by the length of the required welding assembly of system, and general thickness is 10mm; Upper and lower mould has casting, and welding is also arranged.For preventing that plate bundle and anchor clamps at high temperature are out of shape, in order to increase the mould rigidity, counterdie normally monoblock and rectangle " well " character skeleton structure arranged.
Claims (6)
1, a kind of weld jig, comprise upper and lower mould and be located at two-layer graphite pads between the upper and lower mould, described upper and lower mould and graphite pads are provided with screw, with the screw corresponding bolts upper and lower mould and graphite pads are linked together, nut is in fixing upper and lower mould in the two ends of bolt and graphite pads, it is characterized in that described upper and lower mould is made by high temperature alloy.
2, weld jig according to claim 1 is characterized in that, described high temperature alloy is a nickel-base alloy.
3, weld jig according to claim 1 is characterized in that, described high temperature alloy is a ferrous alloy.
4, weld jig according to claim 1 is characterized in that, described high temperature alloy is a cobalt-base alloys.
5, according to claim 1 or 2 or 3 or 4 described weld jigs, it is characterized in that, on the bolt between described nut and the upper and lower mould end face, be provided with spring.
6, weld jig according to claim 6 is characterized in that, the size of described spring is pressed the needed pretightning force of bolt and determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102430691A CN101428382A (en) | 2008-11-28 | 2008-11-28 | Welding fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102430691A CN101428382A (en) | 2008-11-28 | 2008-11-28 | Welding fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101428382A true CN101428382A (en) | 2009-05-13 |
Family
ID=40644136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102430691A Pending CN101428382A (en) | 2008-11-28 | 2008-11-28 | Welding fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101428382A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101983819A (en) * | 2010-11-04 | 2011-03-09 | 西安航空动力股份有限公司 | Method and fixture for welding high temperature alloy and cupronickel |
| CN102357702A (en) * | 2011-10-21 | 2012-02-22 | 中国航天科工集团第二研究院二十三所 | Elastic brazing clamping device for vacuum furnace |
| US8485509B2 (en) | 2009-08-03 | 2013-07-16 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Fixing mechanism and manipulator using the same |
| CN103406675A (en) * | 2013-08-15 | 2013-11-27 | 南京中科煜宸激光技术有限公司 | Laser and electric arc combined welding method for thick high-strength steel plates and clamp for method |
| CN108106648A (en) * | 2017-10-26 | 2018-06-01 | 苏州莱测检测科技有限公司 | A kind of heat insulation type clamping device for detection |
-
2008
- 2008-11-28 CN CNA2008102430691A patent/CN101428382A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8485509B2 (en) | 2009-08-03 | 2013-07-16 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Fixing mechanism and manipulator using the same |
| CN101987451B (en) * | 2009-08-03 | 2013-11-20 | 鸿富锦精密工业（深圳）有限公司 | Clamping mechanism and manipulator using same |
| CN101983819A (en) * | 2010-11-04 | 2011-03-09 | 西安航空动力股份有限公司 | Method and fixture for welding high temperature alloy and cupronickel |
| CN101983819B (en) * | 2010-11-04 | 2013-05-22 | 西安航空动力股份有限公司 | Method and fixture for welding high temperature alloy and cupronickel |
| CN102357702A (en) * | 2011-10-21 | 2012-02-22 | 中国航天科工集团第二研究院二十三所 | Elastic brazing clamping device for vacuum furnace |
| CN102357702B (en) * | 2011-10-21 | 2013-05-29 | 中国航天科工集团第二研究院二十三所 | Elastic brazing clamping device for vacuum furnace |
| CN103406675A (en) * | 2013-08-15 | 2013-11-27 | 南京中科煜宸激光技术有限公司 | Laser and electric arc combined welding method for thick high-strength steel plates and clamp for method |
| CN103406675B (en) * | 2013-08-15 | 2015-09-09 | 南京中科煜宸激光技术有限公司 | A kind of slab high-strength steel laser arc hybrid welding method and fixture thereof |
| CN108106648A (en) * | 2017-10-26 | 2018-06-01 | 苏州莱测检测科技有限公司 | A kind of heat insulation type clamping device for detection |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Open date: 20090513 |