CN1647868A - Method for preparing welded heat radiator - Google Patents
Method for preparing welded heat radiator Download PDFInfo
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- CN1647868A CN1647868A CN 200410003352 CN200410003352A CN1647868A CN 1647868 A CN1647868 A CN 1647868A CN 200410003352 CN200410003352 CN 200410003352 CN 200410003352 A CN200410003352 A CN 200410003352A CN 1647868 A CN1647868 A CN 1647868A
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- scolder
- base
- heat radiator
- radiating fin
- welded heat
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Abstract
The preparation process of welded heat radiator includes the following steps: 1) preparing base seat, fins and solder with welding flux; 2) setting the solder between the base seat and fins; 3) heating the solder to connect the fins to the base seat and to form the heat radiator; 4) maintaining the temperature of heat radiator to lower the temperature to the smelting point of the solder; and 5) cooling the heat radiator to lower the temperature to room temperature. The said preparation process can eliminate holes and bubbles produced during welding and make the crystal grain of the solder become large to lower the heat resistance.
Description
Technical field
The present invention relates to a kind of welded heat radiator preparation method, particularly about a kind of welding that is applied between aluminum material and the aluminum material, or the welding between aluminum material and the copper material, with the welded heat radiator preparation method of the thermal resistance that reduces radiator.
Background technology
As everyone knows, the electronic building brick in the electronic installation as the central processing unit on the motherboard of computer (CPU), needs the assembling radiating module, to cool off the high temperature that produces when it uses.This radiating module has radiator, and this radiator comprises aluminium matter or the copper base that is resisted against central processing unit, and the aluminium matter radiating fin that is welded in this base.
Known welded heat radiator preparation method, at first, before the welding, for ease of radiating fin is fixedly welded on base, row welding again after aluminium matter radiating fin and aluminium matter base need be handled with plating or the processing of meltallizing methods such as (Thermal Spray) in advance, directly welding of aluminum matter radiating fin is in aluminium matter base or copper base, cause electroplating preparation method numerous and diverse, electroplate the generation of polluting and the increase of electroplating cost.
Secondly, be provided with scolder between radiating fin and the base, the solder(ing) paste (Sn63/Pb37) that contains scaling powder as coating is in radiating fin or susceptor surface, or as place solder plate (Sn63/Pb37) behind base, be coated with scaling powder again on solder plate.Since difficult coating solder(ing) paste and scaling powder, cause the difficulty of operation to increase, and the lead of scolder (Pb) material pollute the environment.During welding, because the environment temperature height of weld job, this scaling powder can liquefy and exosmose and carbonization, and the little Huang of radiator outward appearance after causing welding is unclean, cleans to be difficult for, and increases processing cost.Especially in the pyroprocess of welding, scolder is easy to generate emptying aperture or bubble, causes radiating efficiency to be had a greatly reduced quality.And in the cooling procedure after welding, the crystalline particle of scolder is little, and the gross contact area between the crystalline particle is big, causes thermal resistance to increase, and produces crack performance even, has a strong impact on radiating effect.In addition, when radiator assembling radiator fan forms whole radiating module, need parts such as exploitation fastener, cause die needed and increase assembly cost.
Above-mentioned known radiator, in the design with regard to material and radiating module, be difficult to reduce the thermal resistance of radiator, needed to improve the metallographic of the crystalline particle of the scolder welding formation between radiating fin and the base, could have been reduced the thermal resistance of radiator by the welded heat radiator preparation method.And above-mentioned known welded heat radiator preparation method, its high-temperature soldering is big with the cooling metallographic thermal resistance that the result produced.In addition, the process of plating is numerous and diverse, and the pollution of plating does not meet environmental requirement, the expensive reduction competitiveness of product in market of plating, and electrodeposited coating can come off, and makes the acceptance rate of radiator not good.In addition, make the assembling of radiator dirty appearance and radiator fan all increase operating cost after the coating work of scolder before welding, the welding.
Therefore, as from the foregoing, above-mentioned known welded heat radiator preparation method in the use of actual manufacturing and radiator, obviously has inconvenience and exists with defective, and remain to be improved.
Summary of the invention
Main purpose of the present invention, be to provide a kind of welded heat radiator preparation method, the emptying aperture or the bubble of generation when welding to eliminate scolder, and the crystalline particle of the scolder welding formation between radiating fin and the base is grown up and alligatoring, to reduce the thermal resistance of radiator.
An of the present invention purpose is to provide a kind of welded heat radiator preparation method, is applied to the welding between aluminum material and the aluminum material, or the welding between aluminum material and the copper material, to simplify preparation method and equipment, reduce and pollute, reduce cost, promote acceptance rate.
In order to achieve the above object, the present invention mainly provides a kind of welded heat radiator preparation method, and its step comprises:
(1) purchase base, radiating fin and scolder, wherein this base has solder side, and this radiating fin has weld part, and this scolder has scaling powder in order to auxiliary welding;
(2) this scolder is set between the weld part of the solder side of this base and this radiating fin;
(3) heated this scolder at least 30 seconds, make processing temperature rise to 660 ℃ with interior maximum temperature,, finish radiator thereby connect to weld the solder side of the weld part of this radiating fin by scolder in this base from room temperature;
(4) be incubated this radiator 1 hour at the most, make processing temperature reduce to the fusing point of this scolder, the emptying aperture or the bubble of generation when welding to eliminate scolder, and the crystalline particle that the scolder welding is formed is grown up;
(5) cooled off this radiator at least 1 minute, make processing temperature reduce to room temperature, to finish the alligatoring of scolder crystallization.
Weld the weld part of radiating fin behind the solder side of base by adding hot solder, continue insulation processing temperature is reduced to the fusing point of scolder, to eliminate emptying aperture or the bubble that produces when scolder welds, and the crystalline particle that the scolder welding is formed is grown up, be cooled to room temperature again, to finish the alligatoring of scolder crystallization, avoid crack performance, thereby reduce the thermal resistance of radiator.In addition, cooperate the coating of scaling powder, need not electroplating preparation method, make preparation method and simplified equipment, pollute and reduce, cost reduces, and acceptance rate promotes.
Description of drawings
Fig. 1 is a flow chart of the present invention;
Fig. 2 is the schematic diagram of base of the present invention, scolder and radiating fin;
Fig. 3 is the schematic diagram that scaling powder of the present invention is coated the sheet scolder;
Fig. 4 is the further copper heat-conducting plate of welding of aluminium matter base of the present invention, and the schematic diagram of the flank section of aluminium matter base assembling radiator fan.
Wherein, description of reference numerals is as follows:
The 10-base; The 11-solder side; 12-side stopper; The 13-steam vent; The 14-flank section;
The 15-locking part; The 16-locking hole; The 20-radiating fin; The 21-weld part; The 22-steam vent;
The 30-scolder; The 40-scaling powder; The 50-apparatus for coating; The 51-container; 52-discharging cylinder;
53-runner mouth; The copper heat-conducting plate of 60-; The 70-radiator fan.
The specific embodiment
Reach technological means and the effect that predetermined purpose is taked for further setting forth the present invention, see also following about detailed description of the present invention and accompanying drawing, according to purpose of the present invention, feature and characteristics, can be goed deep into thus and concrete understanding, yet accompanying drawing only provides reference and explanation usefulness, is not to be used for the present invention is limited.
See also shown in Figure 1ly, the present invention is a kind of welded heat radiator preparation method, and its step comprises:
(1) purchase base 10, radiating fin 20 and scolder 30, wherein these base 10 end faces have solder side 11, and these radiating fin 20 root edges have weld part 21, and this scolder 30 has scaling powder 40 in order to auxiliary welding.
Please cooperate consult shown in Figure 2, in the present embodiment, this base 10 plate body that generally is rectangle, base 10 can cooperate the electronic building brick of electronic installation and different external forms is arranged.The material of base 10 can be aluminium matter base or copper base.Base 10 has integrated two side stoppers 12, and described two side stoppers 12 extend upward from two opposite side edges respectively.
The material of this radiating fin 20 is an aluminium matter radiating fin 20.The weld part 21 of radiating fin 20 vertically is bent to form from its root edge, and is provided with steam vent 22.
In the present embodiment, this scolder is a sheet scolder 30, and the thickness of this sheet scolder 30 is preferable between 0.05 millimeter to 1 millimeter.The scaling powder 40 of sheet scolder 30 can be finished by mechanical or manual coating, please cooperate to consult shown in Figure 3ly, is the apparatus for coating 50 that present embodiment provides, and it comprises a container 51 and one group of discharging cylinder 52, and this container 51 is provided with runner mouth 53 corresponding to this discharging cylinder 52.This scaling powder 40 is filled in this container 51, scaling powder 40 flows out this runner mouth 53 with deadweight, and be attached to discharging cylinder 52 surfaces, this sheet scolder 30 advances by the rolling of discharging cylinder 52,52 roll extrusion of discharging cylinder are in sheet scolder 30, make scaling powder 40 coat sheet scolder 30 surfaces, cut into size again corresponding to the solder side 11 of base 10.In addition, also can be coated with scaling powder 40, this sheet scolder 30 is set between the weld part 21 of the solder side 11 of this base 10 and this radiating fin 20 again in the solder side 11 of this base 10 or the weld part 21 of this radiating fin 20.Perhaps, scaling powder 40 can be contained in the scolder 30.
This scolder 30 can be kupper solder or lead-free solder.See also following table, be the alloying component ratio of lead-free solder, this lead-free solder comprises tin Sn and is selected from silver-colored Ag, copper Cu, bismuth Bi, antimony Sb, zinc Zn or indium In at least a, as tin Sn contain 95% and antimony Sb contain 5% composition.The fusing point of lead-free solder is higher, so hear resistance is good, helps welding two different materials, and can avoid polluting, with compliance with environmental protection requirements.
The embodiment of the alloying component table of lead-free solder of the present invention:
| Alloy composition | Fusing point (℃) | |||||||
| ??Sn | ??Ag | ??Cu | ??Bi | ??Sb | ??Zn | ??In | Solid-state temperature | Liquidus temperature |
| ??BaL | ??…… | ??…… | ??…… | ??5.0 | ??…… | ??…… | ??240 | ??243 |
| ??BaL | ??…… | ??0.7 | ??…… | ??0.3 | ??…… | ??…… | ??270 | ??229 |
| ??BaL | ??…… | ??0.75 | ??…… | ??…… | ??…… | ??…… | ???????227 | |
| ??BaL | ??3.5 | ??…… | ??…… | ??…… | ??…… | ??…… | ???????227 | |
| ??BaL | ??3.35 | ??0.65 | ??…… | ??…… | ??…… | ??…… | ??217 | ??219 |
| ??BaL | ??1.0 | ??0.5 | ??…… | ??…… | ??…… | ??…… | ??217 | ??227 |
| ??BaL | ??0.3 | ??0.7 | ??…… | ??…… | ??…… | ??…… | ??217 | ??227 |
| ??BaL | ??2.5 | ??0.5 | ??1.0 | ??…… | ??…… | ??…… | ??215 | ??217 |
| ??BaL | ??2.0 | ??0.5 | ??2.0 | ??…… | ??…… | ??…… | ??212 | ??222 |
| ??BaL | ??2.0 | ??0.75 | ??3.0 | ??…… | ??…… | ??…… | ??207 | ??220 |
| ??BaL | ??3.0 | ??0.7 | ??…… | ??…… | ??…… | ??1.0 | ??215 | ??217 |
| ??BaL | ??3.0 | ??0.7 | ??…… | ??…… | ??…… | ??…… | ??217 | ??219 |
| ??BaL | ??3.35 | ??0.7 | ??…… | ??0.3 | ??…… | ??…… | ??218 | ??220 |
| ??BaL | ??3.0 | ??0.5 | ??…… | ??…… | ??…… | ??…… | ??217 | ??219 |
| ??BaL | ??…… | ??…… | ??3.0 | ??…… | ??7.5 | ??…… | ??189 | ??199 |
| ??BaL | ??…… | ??…… | ??58.0 | ??…… | ??…… | ??…… | ???????139 | |
| ??BaL | ??2.0 | ??0.5 | ??7.5 | ??…… | ??…… | ??…… | ??190 | ??213 |
| ??BaL | ??…… | ??…… | ??…… | ??…… | ??9 | ??…… | ||
This scaling powder 40 is water-washing type scaling powder or rosin type scaling powder.See also following table, composition ratio for scaling powder 40, it is at least a that scaling powder 40 comprises the ammonium salt (as AMINEHF), zinc oxide (ZINC OXIDE) or the many alcohols (as PEG200) that are selected from commercially available scaling powder (as AMCO64, AMCO2213, AMCO66A), many hydramine (as TRIETHANOLAMINE), fluorine boride (as AMMONIUMFLUOBORATE, STANNOUS FLUOBORATE, ZINC FLUOBORATE), ammonium and hydrofluoric acid neutralization, as AMCO64 contain 40%, AMINEHF contain 50% and TRIETHANOLAMINE contain 10% composition.
The embodiment of scaling powder component list of the present invention:
| ????#1 | ????#2 | ????#3 | ????#4 | ????#5 | ????#6 | ????#7 | ????#8 | |
| ??AMOC64 | ????100 | ????0 | ????0 | ????0 | ????40 | ????0 | ????0 | ????0 |
| ??AMCO?2213 | ????0 | ????100 | ????0 | ????0 | ????0 | ????40 | ????0 | ????0 |
| ??AMCO?66A | ????0 | ????0 | ????100 | ????0 | ????0 | ????0 | ????40 | ????0 |
| ??Amine·HF | ????0 | ????0 | ????0 | ????400 | ????50 | ????50- | ????50 | ????50 |
| ??Triethanolamine | ????0 | ????0 | ????0 | ????0 | ????10 | ????10 | ????10 | ????10 |
| ??Ammonium ??Fluobrate | ????0 | ????0 | ????0 | ????0 | ????0 | ????0 | ????0 | ????5 |
| ??Stannous ??Fluobrate | ????0 | ????0 | ????0 | ????0 | ????0 | ????0 | ????0 | ????5 |
| ??Zinc?Fluobrate | ????0 | ????0 | ????0 | ????0 | ????0 | ????0 | ????0 | ????5 |
| ??Zinc?Oxide | ????0 | ????0 | ????0 | ????0 | ????0 | ????0 | ????0 | ????5 |
| ??PEG?200 | ????0 | ????0 | ????0 | ????0 | ????0 | ????0 | ????0 | ????20 |
(2) this scolder 30 is set between the weld part 21 of the solder side 11 of this base 10 and this radiating fin 20, and the radiator before the stacked formation welding.
(3) heated this scolder 30 at least 30 seconds, make processing temperature rise to 660 ℃ with interior maximum temperature, in the solder side 11 of this base 10, finish radiator thereby connect with the weld part 21 by these radiating fins 20 of scolder 30 welding from room temperature:
The heating preparation method forms the preceding radiator of welding with step (two) and sends into continuous tunnel furnace, heat by continuous tunnel furnace, to obtain the fixing radiator of welding, wherein fill nitrogen in this continuous tunnel furnace, and keep oxygen in 5000PPM, to avoid scaling powder 40 carbonizations, the cleaning after being convenient to weld.
The heating preparation method also can directly heat the bottom surface of this base 10, or heats the bottom surface of this base 10 and the lateral edges of base 10 simultaneously.
In the heating preparation method, the steam vent 22 of the weld part 21 of this radiating fin 20 helps the evaporation of scaling powder 40 and oozing out of scolder 30, makes welding more firm evenly.In addition, the side stopper 12 of this base 10 can prevent the excessive of scaling powder 40.
(4) be incubated this radiator 1 hour at the most, make processing temperature reduce to the fusing point of this scolder:
Insulating process welds fixing radiator with step (three) and sends into soaking zone in the continuous tunnel furnace, make processing temperature reduce to the fusing point of scolder 30, fusing point shown in the alloying component table of above-mentioned lead-free solder, to eliminate emptying aperture or the bubble that produces when scolder 30 welds, and the crystalline particle that scolder 30 welding are formed is grown up, reduce crystalline particle quantity, so the minimizing of the gross contact area between the crystalline particle, and can reduce thermal resistance.
(5) cooled off this radiator at least 1 minute, make processing temperature reduce to room temperature, to finish the alligatoring of scolder 30 crystallizations:
Processing temperature slowly is reduced to room temperature by the fusing point of scolder 30, and the crystalline particle of avoiding scolder 30 welding to form causes crack performance in the mode of rapid cooling.
By above-mentioned welding preparation method, can weld and finish radiator.If this scaling powder 40 is a rosin type scaling powder, washed with hot solvent.If this scaling powder 40 is the water-washing type scaling powder, can be washed by hot warm water.By the test result of reality, this radiator can reduce by 0.01 ℃ of thermal resistance/more than the W.
See also shown in Figure 4, when this base 10 is aluminium matter base, for promoting the radiating effect of radiator, this step (one) is further purchased copper heat-conducting plate 60, the solder side 11 of this base 10 further is provided with the bottom surface that steam vent 13 is through to base 10, this copper heat-conducting plate 60 is positioned under the bottom surface of base 10, and this scolder 30 is set between this base 10 and this copper heat-conducting plate 60, and this steam vent 13 helps the evaporation of scaling powder 40 and oozing out of scolder 30.Thus, can simultaneously copper heat-conducting plate 60 be welded in base 10.
Please continue and consult shown in Figure 4ly, this base 10 has integrated two flank section 14, and described two flank section 14 extend upward from two opposite side edges respectively, the locking part 15 that extends internally, flank section 14 tops, and locking part 15 is provided with locking hole 16.Flank section 14 can prevent the excessive of scaling powder 40 on the one hand, can pass through locking hole 16 sealed radiator fans 70 on the other hand, with integrant radiating module, and need not redevelop fastener clamping radiator fan 70 and radiator.
Therefore, by welded heat radiator preparation method of the present invention, have characteristics described as follows:
1, adds the weld part of hot solder welding radiating fin behind the solder side of base, continue insulation processing temperature is reduced to the fusing point of scolder, make welded heat radiator not have emptying aperture or bubble, and the crystalline particle that the scolder welding is formed is grown up, reduce the gross contact area of crystalline particle, be cooled to room temperature again, to finish the alligatoring of scolder crystallization, avoid crack performance, so can reduce thermal resistance.
2, heating, insulation and cooling preparation method, cooperate the use of scaling powder, can electroplating preparation method, make aluminium matter radiating fin be directly welded in aluminium matter base or copper base, and scaling powder is coated the sheet scolder easily, significantly simplifies preparation method and equipment, reduces and pollutes, reduce cost, promote acceptance rate.
3, continuous tunnel furnace is filled nitrogen, can avoid the carbonization of scaling powder, and in addition, the side stopper of base or flank section can avoid scaling powder excessive, and in addition, flank section can supply fixedly radiator fan, makes the assembling of radiating module more easy.
The above, only being the detailed description and the accompanying drawing of specific embodiments of the invention, is not in order to restriction the present invention and feature of the present invention, allly is familiar with this operator, modify or variation according to the equivalence that spirit of the present invention is done, all should be contained in claims of the present invention.
Claims (15)
1, a kind of welded heat radiator preparation method, its step comprises:
(1) purchase base, radiating fin and scolder, wherein this base has solder side, and this radiating fin has weld part, and this scolder has scaling powder in order to auxiliary welding;
(2) this scolder is set between the weld part of the solder side of this base and this radiating fin;
(3) heated this scolder at least 30 seconds, make processing temperature rise to 660 ℃ with interior maximum temperature,, finish radiator thereby connect to weld the solder side of the weld part of this radiating fin by scolder in this base from room temperature;
(4) be incubated this radiator 1 hour at the most, make processing temperature reduce to the fusing point of this scolder, the emptying aperture or the bubble of generation when welding to eliminate scolder, and the crystalline particle that the scolder welding is formed is grown up;
(5) cooled off this radiator at least 1 minute, make processing temperature reduce to room temperature, to finish the alligatoring of scolder crystallization.
2, welded heat radiator preparation method as claimed in claim 1, wherein the base of this step () is aluminium matter base or copper base, this radiating fin is an aluminium matter radiating fin.
3, welded heat radiator preparation method as claimed in claim 1, wherein the weld part of the radiating fin of this step () is provided with steam vent.
4, welded heat radiator preparation method as claimed in claim 1, wherein this step () is further purchased copper heat-conducting plate, the solder side of this base further is provided with the bottom surface that steam vent is through to base, this copper heat-conducting plate is positioned under the bottom surface of base, and this scolder is set between this base and this copper heat-conducting plate.
5, welded heat radiator preparation method as claimed in claim 1, wherein the base of this step () has integrated two flank section, described two flank section extend upward from two opposite side edges respectively, the locking part that extends internally, flank section top, and the locking part is provided with locking hole.
6, welded heat radiator preparation method as claimed in claim 1, wherein the base of this step () has integrated two side stoppers, and described two side stoppers extend upward from two opposite side edges respectively.
7, welded heat radiator preparation method as claimed in claim 1, wherein the scolder of this step () is the sheet scolder, and the thickness of this sheet scolder is between 0.05 millimeter to 1 millimeter, and this scaling powder is coated this sheet solder surface.
8, welded heat radiator preparation method as claimed in claim 1, wherein the scolder of this step () comprises tin Sn and is selected from silver-colored Ag, copper Cu, bismuth Bi, antimony Sb, zinc Zn or indium In at least a.
9, welded heat radiator preparation method as claimed in claim 1, wherein the scaling powder of this step () is water-washing type scaling powder or rosin type scaling powder.
10, welded heat radiator preparation method as claimed in claim 1, it is at least a that wherein the scaling powder of this step () comprises the ammonium salt, zinc oxide or the many alcohols that are selected from many hydramine, fluorine boride, ammonium and hydrofluoric acid neutralization.
11, welded heat radiator preparation method as claimed in claim 10, wherein the fluorine boride is ammonium fluoroborate, tin fluoborate or zinc fluoroborate.
12, welded heat radiator preparation method as claimed in claim 10, wherein many alcohols are PEG200.
13, welded heat radiator preparation method as claimed in claim 1, wherein this step (three) is filled nitrogen by the continuous tunnel furnace heating in this continuous tunnel furnace, and keeps oxygen in 5000PPM.
14, welded heat radiator preparation method as claimed in claim 1, wherein this step (three) directly heats the bottom surface of this base and the lateral edges of base.
15, a kind of welded heat radiator preparation method, its step comprises:
(1) purchase base, radiating fin and scolder, wherein this base has solder side, and this radiating fin has weld part;
(2) the coating scaling powder in order to auxiliary welding, is provided with this scolder in the weld part of the solder side of this base or this radiating fin between the weld part of the solder side of this base and this radiating fin;
(3) heated this scolder at least 30 seconds, make processing temperature rise to 660 ℃ with interior maximum temperature,, finish radiator thereby connect to weld the solder side of the weld part of this radiating fin by scolder in this base from room temperature;
(4) be incubated this radiator 1 hour at the most, make processing temperature reduce to the fusing point of this scolder, the emptying aperture or the bubble of generation when welding to eliminate scolder, and the crystalline particle that the scolder welding is formed is grown up;
(5) cooled off this radiator at least 1 minute, make processing temperature reduce to room temperature, to finish the alligatoring of scolder crystallization.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410003352 CN1647868A (en) | 2004-01-21 | 2004-01-21 | Method for preparing welded heat radiator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410003352 CN1647868A (en) | 2004-01-21 | 2004-01-21 | Method for preparing welded heat radiator |
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| CN1647868A true CN1647868A (en) | 2005-08-03 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200014B (en) * | 2006-12-13 | 2010-12-15 | 富准精密工业(深圳)有限公司 | Fabricating process for heat dissipating device |
| CN101588706B (en) * | 2008-05-23 | 2012-05-23 | 中山伟强科技有限公司 | Radiating module and welding method thereof |
| CN101549435B (en) * | 2008-04-03 | 2012-06-13 | 富准精密工业(深圳)有限公司 | Method for manufacturing heat sink |
| CN104816102B (en) * | 2015-05-18 | 2016-10-05 | 苏州优诺电子材料科技有限公司 | Heat conduction fixed connection method between a kind of parts and the solder of use thereof |
| CN108274087A (en) * | 2018-04-16 | 2018-07-13 | 芜湖市泰能电热器具有限公司 | A kind of application method of brazing material |
| CN109848499A (en) * | 2019-03-08 | 2019-06-07 | 任耀文 | A kind of preparation method of Complex Heat device core |
| CN111306975A (en) * | 2020-02-18 | 2020-06-19 | 苏州纵贯线换热器有限公司 | Copper-aluminum welded heat exchange element and machining process thereof |
| US11285569B2 (en) | 2003-04-25 | 2022-03-29 | Henkel Ag & Co. Kgaa | Soldering material based on Sn Ag and Cu |
-
2004
- 2004-01-21 CN CN 200410003352 patent/CN1647868A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11285569B2 (en) | 2003-04-25 | 2022-03-29 | Henkel Ag & Co. Kgaa | Soldering material based on Sn Ag and Cu |
| CN101200014B (en) * | 2006-12-13 | 2010-12-15 | 富准精密工业(深圳)有限公司 | Fabricating process for heat dissipating device |
| CN101549435B (en) * | 2008-04-03 | 2012-06-13 | 富准精密工业(深圳)有限公司 | Method for manufacturing heat sink |
| CN101588706B (en) * | 2008-05-23 | 2012-05-23 | 中山伟强科技有限公司 | Radiating module and welding method thereof |
| CN104816102B (en) * | 2015-05-18 | 2016-10-05 | 苏州优诺电子材料科技有限公司 | Heat conduction fixed connection method between a kind of parts and the solder of use thereof |
| CN108274087A (en) * | 2018-04-16 | 2018-07-13 | 芜湖市泰能电热器具有限公司 | A kind of application method of brazing material |
| CN109848499A (en) * | 2019-03-08 | 2019-06-07 | 任耀文 | A kind of preparation method of Complex Heat device core |
| CN111306975A (en) * | 2020-02-18 | 2020-06-19 | 苏州纵贯线换热器有限公司 | Copper-aluminum welded heat exchange element and machining process thereof |
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