CN1367058A - Forming combination method by using metal low-temp. welding material - Google Patents
Forming combination method by using metal low-temp. welding material Download PDFInfo
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- CN1367058A CN1367058A CN 01102282 CN01102282A CN1367058A CN 1367058 A CN1367058 A CN 1367058A CN 01102282 CN01102282 CN 01102282 CN 01102282 A CN01102282 A CN 01102282A CN 1367058 A CN1367058 A CN 1367058A
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Abstract
The present invention discloses a joint forming method by using metalic low-temp. soldering material, and is characterized by that the said soldering material is a liquid formed from five kinds of metal powders of tin, lead, zinc, aluminium and silver mixed in the liquid lithium fluoride catalyst. The said soldering material is applied onto the jointing surface of an object to be connected, another object is to be connected with the above mentioned object, they are assembled and heated at a tow temperature not higher than 250 deg.C, then the tin, lead, zinc, aluminium and silver in the soldering material are heated and melted according to their melting points in sequence so as to implement a formed joint of the two objects.
Description
The invention relates to a kind ofly, be meant especially a kind ofly to allow the welding manner of two kinds of metal bond at low-temperature condition with metal solder shaping joint method.
The casing that is used for mobile computer or palmtop computer or mobile phone at present, its material has plastics, also have and use metals such as magnadure, after the casing combination is finished, need disassemble when keeping in repair, just can destroy the original compactness of casing, because casing has thin thin characteristic, be provided with double-screw bolt thereon can engage, and is connect and establishes so there is the people to use mode bonding or welding, for example, aluminium flake or aluminium alloy welding, or aluminium and other metal solder will be accomplished the low temperature single-sided welding, and do not influence the outward appearance of another side, can't realize technically.
Because the fusing point of aluminium is 660 ℃, be molten to the surface of aluminium, then need external environment temperature, mode with hard solder, need reach this temperature even higher, at this moment the high temperature that is produced not only can have influence on the aesthetic property on aluminium surface itself, just the surface of object also can be melted in company with scolder, when particularly very little object engages, just can produce the effect of losing the greater for less, in order to engage two objects, need to adopt scolder, the temperature that makes melt solder in welding process earlier is all greater than two objects, even scolder also need be through selecting, as can't directly engaging between the tin aluminium, need can finish joint by the intermediary of nickel element, owing to all can't satisfy extensive use and the quick actual job demand that engages or the like on known all materials and the preparation method, the inventor researches and develops, and to solve the problem that known scolder can't engage smoothly, particularly can't can carry out the problem that engages between the multiple metal object under the lower temperature state.
The object of the present invention is to provide a kind of with low-temperature metal scolder shaping joint method, the heating means of utilization low temperature, make and have the scolder that is mixed in the liquid catalyst with metal dust, the heat that only need accept first metal makes it fusion, then with the heat of this fusion, add that heating heat causes that second metal higher than first melting point metal produces fusion, plant the mode class according to this and be pushed into the 3rd metal, the 4th metal, five metals belongs to, have five kinds of main components, be tin, plumbous, zinc, aluminium, five kinds of metals of silver, also be five kinds of the most frequently used metals, also be often to be applied to the metal material that engages, the present invention with the powder of at least five kinds of metals in the liquid-fluorination lithium, after being applied in the composition surface, temperature value with the low temperature set is heated, and just can finish two same metalloids, or the mode that engages between the object of two disparate metals, and one of them energy of five kinds of metals of the metal that can engage with scolder and this is compatible.Its characteristic is to heat with the short time under the low temperature, just can finish the function of welding, and can not destroy the surface of welding object.And welding back seam is very little, and zygosity improves, welding precision improves, the intensity of welding improves, and whole aesthetic appearance improves, and has better aesthetic property, and whole size Control is more accurate, and two objects engage the position that is provided with and more can freely select.
For realizing above-mentioned purpose, scolder of the present invention is the catalyst that is mixed in the liquid-fluorination lithium with tin, lead, zinc, aluminium, five kinds of metal dusts of silver.They are between two kinds of metal objects that need engage, liquid solder smeared to attach to engaging object in the mode that point connects or face connects want on the surface on composition surface, to be engaged object then and be connected to the joint object surface that this has scolder, promptly be not higher than 250 ℃ heating, can because of tin, lead, zinc, aluminium, silver point order in regular turn heat conduction melt to whole meltings in the scolder this moment, stop heating then, can allow engage object and be engaged the object Joint.
For making your juror can further understand technology, means and effect that the present invention takes for the predetermined purpose of realization, now for a preferable feasible embodiment and cooperate graphic detailed description as after, believe purpose of the present invention, feature and advantage, go deep into and concrete understanding when getting one thus.
Fig. 1 is a formation schematic diagram of the present invention.
Fig. 2 is the another kind of schematic diagram that forms of the present invention.
Fig. 3 is an enforcement side view of the present invention.
Fig. 4 is Fig. 3 A of the present invention profile partly.
The present invention is a kind of brazing metal, as shown in Figure 1, during it is formed, is to be mixed in the catalyst with the liquid-fluorination lithium with the ratio that is fit to tin, lead, zinc, aluminium, five kinds of metal dusts of silver, and to form liquid solder, catalyst and intermetallic can be equal proportions.
A kind of manufacturing process of metal solder the steps include:
(a) preparation of liquid-fluorination lithium;
(b) preparation of tin, lead, zinc, aluminium, five kinds of metal dusts of silver; And
(c) tin, lead, zinc, aluminium, five kinds of metal dusts of silver are mixed in the liquid-fluorination lithium.
Wherein (b) step more can add other metal dust.
Be shaped with the metal solder, joint method, the joint object of two kinds of metal formings that it engages in need and being engaged between the object, scolder is attached to engaging on the surface of object as the composition surface with the mode of smearing or some glue mode or wire mark mode, to be engaged object then and be connected to the joint object surface that this has scolder, promptly be not higher than 250 ℃ low-temperature heat, at this moment can be in the scolder because of tin, plumbous, zinc, aluminium, silver point order and heat conduction fusion in regular turn, allow the two object places of engaging also produce fusion, stop heating then, naturally after cooling or the adding cooling, make between two objects affixed.
As shown in Figure 2, if in the time of will increasing between object heat conductivity or weld strength, still can in the scolder of liquid, be added into other metal dust, represent with the 6th metal dust among Fig. 2, but do not exceed, can both be comprised with the several metal that can reach specific demand with a kind of metal dust.
A kind of method that is shaped, engages with the metal solder the steps include:
(a) preparation of scolder; Be to be mixed in the catalyst of liquid-fluorination lithium with tin, lead, zinc, aluminium, five kinds of metal dusts of silver;
(b) shaping of the pair of metal object of desire joint; Object is meant can be with the metal compatibility of scolder;
(c) scolder is applied on the composition surface of an object wherein;
(d) object is connected on another object;
(e) be not higher than 250 ℃ low-temperature heat, can be in this moment scolder because of tin, lead, zinc, aluminium, the fusion in regular turn of silver point order, the redox reaction by catalyst in the scolder makes another kind of metal melting; And
Stop heating during (f) to the complete fusion of scolder, allow two objects join.
To strengthen heat conductivity, bond strength can add other in scolder metal between object wherein.
Because the fusing point of tin is 232 ℃, plumbous fusing point is 327 ℃, the fusing point of zinc is 419 ℃, the fusing point of aluminium is 660 ℃, silver point is 961 ℃, method of the present invention is for (to refer to respect to aluminium by means of low temperature, the silver point temperature is a high temperature) short time heating, owing to be enough to make the fusion of tin elder generation with 250 ℃ temperature heating, owing to still be the moment of heating, the conduction of utilization heating power, also can make plumbous fusion in moment, because had enough heats, and then mode according to this, therebetween also by the redox reaction of catalyst, with heat, after the fusion of zinc, make the aluminium fusion again, and then make silver-colored fusion, just with stepped step by step allow low-temperature metal heat conduction fusion in regular turn, the highest silver-colored fusion of melting temperature in the employed metal of relief is because the instantaneous temperature of this moment is 961 ℃, compare with 250 ℃ of whole heating-up temperature, be three times of high temperature nearly, under 250 ℃ of processing temperatures, each object all is in and is lower than 250 ℃ state; As long as being lower than silver, the object fusing point all can produce the local state that is melted in its surface, so promptly being formed to need to produce between the two metal object surface that engage all has the part to be melted, thermal source with heating removes then, be cooled in the process of 20～25 ℃ of normal temperature, the melting state that makes scolder and two abutted surface places is by solidification, promptly be after all heats are eliminated, just can change scolder melting state peripheral at once with it, and return to solid state, the liquid-fluorination lithium of this moment is also simultaneously partly formed various metal fluorides in redox reaction, so, and contained various metals together are fixed between two composition surfaces.
As shown in Figure 3 and Figure 4, be the actual engagement state that is implemented on the article of the present invention, wherein will engage object 1 and coat scolder 3 and be connected to and be engaged on the object 2, can see with few one deck scolder 3 as thin as a wafer and just can realize situation that two objects are engaged.
Processing mode in sum, the mode that the present invention uses low-temperature bake etc. to heat, can remove to finish the metal object of solder joints compatibility with more a spot of energy, that is to say under the different required standards of each object, can use suitable metal to make its profile respectively, use scolder of the present invention and mode then, object is arranged in the appropriate location of another object, so, can make each object under the cost of considering its whole manufacturing cost and making respectively, do the most appropriate combination, just can reduce whole cost of manufacture, make whole finished product thing will have the position of stronger robustness, or to provide the position of joint, all can engage the object of being made by preferable material is arranged with the present invention, become the form of making the best use of everything, and seam is very little between two objects of welding back, and engaging stationarity improves, whole welding precision is improved, the intensity of welding improves, whole aesthetic appearance improves, and having better aesthetic property, and the size Control of whole object is more accurate, the position that is provided with is freer, makes article that better serviceability is provided.
Claims (4)
1, a kind of method that is shaped and engages with the metal solder is characterized in that, the steps include:
(a) preparation of scolder; Be to be mixed in the catalyst of liquid-fluorination lithium with tin, lead, zinc, aluminium, five kinds of metal dusts of silver;
(b) shaping of a pair of object that can engage with the desire of solder metal compatibility;
(c) scolder is applied on wherein the object;
(d) object is connected on another object;
(e) be less than or equal to 250 ℃ heating, can because of tin, lead, zinc, aluminium, silver point order in regular turn fusion by the redox reaction of scolder in catalyst be caused the fusion of another kind of metal in the scolder this moment; And
Stop heating during (f) to the complete fusion of scolder, make two objects affixed.
2, the shaping joint method of metal solder as claimed in claim 1 is characterized in that: wherein will strengthen heat conductivity, bond strength between object and can add other metal in scolder.
3, a kind of manufacturing process with the metal solder is characterized in that, the steps include:
(a) preparation of liquid-fluorination lithium;
(b) preparation of tin, lead, zinc, aluminium, five kinds of metal dusts of silver; And
(c) tin, lead, zinc, aluminium, five kinds of metal dusts of silver are mixed in the liquid-fluorination lithium.
4, the manufacturing process of metal solder as claimed in claim 3 is characterized in that: wherein (b) step more can add other metal dust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01102282 CN1367058A (en) | 2001-01-20 | 2001-01-20 | Forming combination method by using metal low-temp. welding material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01102282 CN1367058A (en) | 2001-01-20 | 2001-01-20 | Forming combination method by using metal low-temp. welding material |
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| CN1367058A true CN1367058A (en) | 2002-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 01102282 Pending CN1367058A (en) | 2001-01-20 | 2001-01-20 | Forming combination method by using metal low-temp. welding material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1968774B (en) * | 2004-06-15 | 2010-09-01 | 株式会社鲜光Ampa | Flux-containing brazing agent for use in low-temperature brazing process |
-
2001
- 2001-01-20 CN CN 01102282 patent/CN1367058A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1968774B (en) * | 2004-06-15 | 2010-09-01 | 株式会社鲜光Ampa | Flux-containing brazing agent for use in low-temperature brazing process |
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