CN103014583B - Production method of clean and pollution-free supersoft tin-plated solder strip - Google Patents
Production method of clean and pollution-free supersoft tin-plated solder strip Download PDFInfo
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- CN103014583B CN103014583B CN201210485858.2A CN201210485858A CN103014583B CN 103014583 B CN103014583 B CN 103014583B CN 201210485858 A CN201210485858 A CN 201210485858A CN 103014583 B CN103014583 B CN 103014583B
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Abstract
The invention relates to a metal material surface coating technology, in particular to a production method which is used for producing a clean and pollution-free supersoft tin-plated solder strip and is low in production flow, low in yield strength of a produced solder strip and good in surface quality. The production method comprises the following steps of: slitting a hard state copper strip into rolls, putting the rolls on a loading tray, and enabling the copper strip to pass through a loading mechanism, a tension detection mechanism, an activating and annealing furnace, a tin plating system, an S roller driving component, a tin beading detecting component and a collecting system in sequence, wherein the activating and annealing furnace comprises an obliquely arranged annealing furnace body, an annealing furnace tube which is used for penetrating through a solder strip is arranged in the annealing furnace body along the conveying direction of the solder strip, two ends of the annealing furnace tube extend out of the annealing furnace body, the tube wall of the outlet end of the annealing furnace tube, which extends out of the annealing furnace body, is provided with an activating agent feeding hole, the outlet end of the annealing furnace tube extends to the inside of tin liquor of a tin furnace, an ignition point is formed at the inlet end above the annealing furnace tube, a sink roller is arranged below the liquid surface of the tin furnace, and the S roller driving component is arranged behind a cooling component and is used for controlling the discharging speed of the solder strip.
Description
Technical field
The present invention relates to metal material surface paint-on technique, particularly for the production of the production method of a kind of clean ultra-soft tin coated welding of used for solar batteries.
Background technology
Tin-coated welding strip is one of Primary Component of solar module production, for the link between crystal silicon solar batteries sheet.Because the thickness of crystal silicon solar batteries sheet is more and more thinner, the mechanical property of tin-coated welding strip has been proposed to high requirement.Require the Proof strength of non-proportional Rp0.2 of tin-coated welding strip as far as possible little.The Proof strength of non-proportional Rp0.2 of tin-coated welding strip is generally more than 60MPa in the market.For reducing the crackle of crystal silicon solar batteries sheet in welding process, require to produce the tin-coated welding strip that a kind of Proof strength of non-proportional Rp0.2 is less than 60MPa.
At present, in the production of dead-soft tin-coated welding, welding is cut by copper strips or round copper wire calendering forms, the copper strips deliquescing of first annealing, then through successively unreeling, pickling, washing, soldering flux coating, preheating, painting tin, cooling and wrapup procedure.
There is following weak point in the production system of tin-coated welding strip of prior art and production method:
1) production system long flow path;
2) due to pickling, generally adopt the strong acid such as hydrochloric acid, sulfuric acid, have environment hidden danger;
3) need to apply soldering flux, easily residual, affect welding quality;
4) native copper resting period is short, otherwise easily causes pinprick, and leakage copper etc. are bad, affect coat continuity;
5) yield strength is wayward.
Summary of the invention
The present invention is directed to the problem that prior art exists, a kind of production method of cleanliness without any pollution ultra-soft tin coated welding is provided, be intended to shorten and simplify tin-coated welding strip Production Flow Chart, reduce environmental pollution, make the yield strength of welding little simultaneously, improve the total quality of welding.
For solving the problems of the technologies described above, the production method of cleanliness without any pollution ultra-soft tin coated welding provided by the invention, comprise the steps: that hard state copper strips is cut into coiled strip to be placed on discharge plate, make copper strips successively through blowing pinch roll, tension-detecting mechanism, activation annealing stove, painting tin system, S roller drive disk assembly, list edge detection part and material-receiving system, described activation annealing stove comprises the annealing body of heater being obliquely installed, and the welding inlet end of annealing body of heater is higher than exit end, in annealing body of heater, along welding throughput direction, be provided with for running through the annealing boiler tube of welding, it is external that annealing furnace is stretched out at annealing boiler tube two ends, the tube wall that described annealing boiler tube stretches out annealing body of heater exit end is provided with activator and adds entrance, and the exit end of annealing boiler tube extends to the tin liquor inside of tin stove, the inlet end of annealing boiler tube top is provided with firing point, the tin stove liquid level below that is coated with tin system is provided with for the sinking roller around welding, described S roller drive disk assembly is arranged at the rear of cooling-part for controlling welding discharging speed, the speed that copper strips enters activation annealing stove is 1.0 ~ 5.0m/min, the annealing temperature of activation annealing stove is 605 ℃ ~ 900 ℃, to activator, add the mixed gas that the composition that passes into activated gas in entrance is one or several and nitrogen or argon gas in carbon monoxide, hydrogen, alcohol vapour and/or water vapour, wherein the volume content of carbon monoxide, hydrogen, alcohol vapour and/or water vapour is 10 ~ 80%, and the flow that passes into described mixed gas is 10 ~ 50L/min, in tin stove, the painting Xi Wendu of tin liquor is 210 ℃ ~ 280 ℃.
With respect to prior art, the present invention has obtained following beneficial effect: can directly adopt hard state copper strips to cut, improve copper strips and cut rear surface quality, the copper strips for the treatment of painting tin at Tu Xiqian carries out anneal by activation annealing stove, and in annealing boiler tube, by activator, add entrance and add activated gas, copper strips is in annealing boiler tube in annealing process, and activated gas is at high temperature removed the zone of oxidation reduction of copper strip surface.Therefore, by the activation annealing process of activation annealing stove, realized hard state annealing copper strip and deoxidation layer have been processed, copper strips can directly be entered and be coated with tin system, pickling of the prior art, washing and coating soldering flux process have been saved, effectively shortened the flow process of production system, and avoided because of pickling and apply the pollution of soldering flux to environment.And avoided soldering flux to be coated with the quality problems such as welding surface leakage copper inhomogeneous and that cause.Simultaneously, copper strips after annealing directly enters the tin system that is coated with, the length of copper strips in circulation flow process is shortened greatly, copper strips is basic suitable with copper strips deadweight to the tension force between sinking roller at annealing furnace, the tension force that closes roller at discharge plate to blowing folder is only 2 to 100N, at sinking roller to the tension force between material-receiving system, is only also 2 to 50N, and the tractive tension force of copper strips in circulation is obviously diminished, effectively reduce the viscous deformation that copper strips produces in circulation, thereby further reduced the yield strength of copper strips.In addition, for avoiding activated gas to enter in air, the exit end of annealing boiler tube extends to the tin liquor inside of tin stove, the inlet end of annealing boiler tube top is provided with firing point, the activated gas overflowing from top annealing boiler tube can be burnt, and the activated gas that the present invention adopts be product after reduction-oxidation layer is water or carbonic acid gas, avoided the pollution to environment.
As preferred version of the present invention, described activated gas is the mixed gas of hydrogen and nitrogen, and wherein the volume percent of hydrogen is 10 ~ 80%.
As preferred version of the present invention, in described tin stove, the composition of tin liquor is 60Sn40Pb, 63Sn37Pb, 62Sn36Pb2Ag, 63Sn35Pb2Ag or 96.5Sn3Ag0.5Cu.
Accompanying drawing explanation
Fig. 1 is the ultra-soft tin coated welding production system schematic diagram of cleanliness without any pollution of the present invention.
Fig. 2 is for being coated with the structural representation of tin system.
Fig. 3 is the schematic flow sheet of production method of the present invention.
Wherein, 1 discharge mechanism; 101 discharge plates; 102 blowing pinch rolls; 2 tension-detecting mechanisms; Position detection means on 201; 202 upper/lower positions detection means; 203 tension force detect share components; 3 activation annealing stoves; 301 annealing bodies of heater; 302 annealing boiler tubes; 303 activators add entrance; 304 firing points; 305 copper strips outlets; 4 are coated with tin system; 401 sinking rollers; 402 cooling-parts; 403 tin stoves; 404 except slag hearth; 404a cooling tank; 404b heat preservation tank; 404c heating tank; 405 tin furnace kettle mouths; 406 tin pumps; 5 S roller drive disk assemblies; 6 list edge detection parts; 7 material-receiving systems; 8 weldings.
Embodiment
Be the production system of cleanliness without any pollution ultra-soft tin coated welding of the present invention as shown in Figure 1 and Figure 2, comprise the discharge mechanism 1, tension-detecting mechanism 2, activation annealing stove 3, painting tin system 4, S roller drive disk assembly 5, list edge detection part 6 and the material-receiving system 7 that along production line, set gradually, discharge mechanism 1 comprises discharge plate 101 and for clamping the blowing pinch roll 102 of welding 8, be coated with tin system 4 comprise tin stove 403, tin furnace kettle mouth 405, except slag hearth 404 and tin furnace kettle mouth 405 tops are for the cooling-part 402 of cooling welding 8, in tin stove, be provided with tin pump 406, activation annealing stove 3 comprises the annealing body of heater 301 being obliquely installed, and the welding inlet end of annealing body of heater 301 is higher than exit end, annealing, body of heater 301 is interior to be provided with for running through the annealing boiler tube 302 of welding 8 along welding 8 throughput directions, annealing boiler tube 302 outer walls are provided with heater coil, stretch out outside annealing body of heater 301 at annealing boiler tube 302 two ends, the tube wall that annealing boiler tube 302 stretches out annealing body of heater 301 exit end is provided with activator and adds entrance 303, and the copper strips outlet 305 of annealing boiler tube exit end extends to the tin liquor inside of tin stove 403, the inlet end of annealing boiler tube 302 tops is provided with firing point 304, for the activated gas that burns and overflow, the liquid level below of tin furnace kettle mouth 405 is provided with for the sinking roller 401 around welding 8, S roller drive disk assembly 5 is arranged at the rear of cooling-part 402 for controlling welding 8 discharging speeds.
For effectively controlling the dispensing speed of copper strips, prevent copper strips knotting or excessively tension, tension-detecting mechanism 2 comprises that upper position detection means 201, upper/lower positions detection means 202 and the tension force at blowing pinch roll 102 rears detect share components 303, can control dispensing speed by tension-detecting mechanism, prevent that blowing is too fast or excessively slow.
For further controlling dispensing speed, after discharge plate 101, be provided with friction damping device.
For ease of welding after being coated with tin, from tin stove 403, draw, S roller drive disk assembly 5 comprises three live rolls that are crisscross arranged up and down for around welding 8.
For ease of realizing continuous painting tin, produce, and effectively control foreign matter content in tin liquor, guarantee tin-coated welding strip quality, except slag hearth 404 comprises the cooling tank 404a communicating with tin furnace kettle mouth 405 outlets, heat preservation tank 404b and heating tank 404c, in cooling tank 404a, be provided with spiral coil cooling tube, heating tank 404c outlet is communicated with tin stove 403.As shown in Figure 2, tin liquor is inflow cooling tank 404a from tin furnace kettle mouth 405 overflows, after cooling tank 404a is cooling, temperature is down to and can be made the temperature that in tin liquor, impurity is separated out, tin liquor flows into heat preservation tank 404b, insulation through certain hour, impurity in tin liquor is separated out gradually, and last tin liquor is heated to be coated with Xi Wendu through heating tank 404c and is pumped in tin stove 403 and continued to recycle by tin pump 406.
For ease of being coated with the cooling of welding after tin, cooling-part 402 can be vortex tube water cooler, air cooler or water smoke water cooler.
Embodiment 1
As shown in Figure 3, for realizing object of the present invention, production method of the present invention is, hard state copper strips is cut into coiled strip and is placed on discharge plate 101, make copper strips successively through discharge mechanism 1, tension-detecting mechanism 2, the activation annealing stove 3 of above-mentioned production system, be coated with tin system 4, S roller drive disk assembly 5, list edge detection part 6 and material-receiving system 7.
Control the rotating speed of live roll in S roller drive disk assembly 5, the speed that traction copper strips enters activation annealing stove 3 is 1.0m/min, the annealing temperature of activation annealing stove is 605 ℃, to activator, adding the composition that passes into activated gas in entrance is the mixed gas of carbon monoxide and argon gas, wherein the volume content of carbon monoxide is 10%, and the flow that passes into above-mentioned mixed gas is 50L/min.
Being coated with tin liquor composition in tin system is 60Sn40Pb, and in tin furnace kettle mouth, the temperature of tin liquor is 280 ℃, and the design temperature of cooling tank is 240 ℃, and the design temperature of heat preservation tank is 210 ℃, and the design temperature of heating tank is 280 ℃.
To the finished product welding detected result of embodiment 1 as following table:
| Project | Embodiment 1 |
| Tensile strength Rm(Mpa) | 176．12 |
| Proof strength of non-proportional Rp0.2(Mpa) | 53．62 |
| Outward appearance and list edge | Qualified |
Embodiment 2
Difference from Example 1 is, control the rotating speed of live roll in S roller drive disk assembly, the speed that traction copper strips enters activation annealing stove is 5.0m/min, the annealing temperature of activation annealing stove is 900 ℃, to activator, adding the composition that passes into activated gas in entrance is the mixed gas of hydrogen and nitrogen, wherein the volume content of hydrogen is 10%, and the flow that passes into above-mentioned mixed gas is 50L/min.
Being coated with tin liquor composition in tin system is 63Sn37Pb, and in tin furnace kettle mouth, the temperature of tin liquor is 270 ℃, and the design temperature of cooling tank is 235 ℃, and the design temperature of heat preservation tank is 205 ℃, and the design temperature of heating tank is 270 ℃.
The finished product welding detected result of embodiment 2 is as following table:
| Project | Embodiment 1 |
| Tensile strength Rm(Mpa) | 167．15 |
| Proof strength of non-proportional Rp0.2(Mpa) | 52．84 |
| Outward appearance and list edge | Qualified |
Embodiment 3
Difference from Example 1 is, control the rotating speed of live roll in S roller drive disk assembly, the speed that traction copper strips enters activation annealing stove is 4m/min, the annealing temperature of activation annealing stove is 800 ℃, to activator, adding the composition that passes into activated gas in entrance is the mixed gas of water vapor and nitrogen, wherein the volume content of water vapor is 20%, and the flow that passes into above-mentioned mixed gas is 30L/min.
Being coated with tin liquor composition in tin system is 62Sn36Pb2Ag, and in tin furnace kettle mouth, the temperature of tin liquor is 260 ℃, and the design temperature of cooling tank is 230 ℃, and the design temperature of heat preservation tank is 200 ℃, and the design temperature of heating tank is 260 ℃.
The finished product welding detected result of embodiment 3 is as following table:
| Project | Embodiment 1 |
| Tensile strength Rm(Mpa) | 167．96 |
| Proof strength of non-proportional Rp0.2(Mpa) | 52．08 |
| Outward appearance and list edge | Qualified |
Execute example 4
Difference from Example 1 is, control the rotating speed of live roll in S roller drive disk assembly, the speed that traction copper strips enters activation annealing stove is 3m/min, the annealing temperature of activation annealing stove is 700 ℃, to activator, adding the composition that passes into activated gas in entrance is the mixed gas of alcohol vapour and argon gas, wherein the volume content of alcohol vapour is 20%, and the flow that passes into above-mentioned mixed gas is 30L/min.
Being coated with tin liquor composition in tin system is 63Sn35Pb2Ag, and in tin furnace kettle mouth, the temperature of tin liquor is 250 ℃, and the design temperature of cooling tank is 220 ℃, and the design temperature of heat preservation tank is 210 ℃, and the design temperature of heating tank is 250 ℃.
Embodiment 4 finished product welding detected results are as following table:
| Project | Embodiment 1 |
| Tensile strength Rm(Mpa) | 168．81 |
| Proof strength of non-proportional Rp0.2(Mpa) | 50．93 |
| Outward appearance and list edge | Qualified |
Embodiment 5
Difference from Example 1 is, control the rotating speed of live roll in S roller drive disk assembly, the speed that traction copper strips enters activation annealing stove is 2m/min, the annealing temperature of activation annealing stove is 650 ℃, to activator, adding the composition that passes into activated gas in entrance is the mixed gas of carbon monoxide and argon gas, wherein the volume content of carbon monoxide is 80%, and the flow that passes into above-mentioned mixed gas is 10L/min.
Being coated with tin liquor composition in tin system is 60Sn40Pb2Ag, and in tin furnace kettle mouth, the temperature of tin liquor is 220 ℃, and the design temperature of cooling tank is 195 ℃, and the design temperature of heat preservation tank is 195 ℃, and the design temperature of heating tank is 220 ℃.
The finished product welding detected result of embodiment 5 is as following table:
| Project | Embodiment 1 |
| Tensile strength Rm(Mpa) | 167．52 |
| Proof strength of non-proportional Rp0.2(Mpa) | 52．88 |
| Outward appearance and list edge | Qualified |
Embodiment 6
Difference from Example 1 is, control the rotating speed of live roll in S roller drive disk assembly, the speed that traction copper strips enters activation annealing stove is 5m/min, the annealing temperature of activation annealing stove is 750 ℃, to activator, adding the composition that passes into activated gas in entrance is the mixed gas of hydrogen and argon gas, wherein the volume content of hydrogen is 70%, and the flow that passes into above-mentioned mixed gas is 15L/min.
Being coated with tin liquor composition in tin system is 63Sn37Pb, and in tin furnace kettle mouth, the temperature of tin liquor is 250 ℃, and the design temperature of cooling tank is 230 ℃, and the design temperature of heat preservation tank is 207 ℃, and the design temperature of heating tank is 250 ℃.
The finished product welding detected result of embodiment 6 is as following table:
| Project | Embodiment 1 |
| Tensile strength Rm(Mpa) | 163.04 |
| Proof strength of non-proportional Rp0.2(Mpa) | 50.87 |
| Outward appearance and list edge | Qualified |
Embodiment 7
Difference from Example 1 is, control the rotating speed of live roll in S roller drive disk assembly, the speed that traction copper strips enters activation annealing stove is 5m/min, the annealing temperature of activation annealing stove is 850 ℃, to activator, adding the composition that passes into activated gas in entrance is the mixed gas of hydrogen and nitrogen, wherein the volume content of hydrogen is 80%, and the flow that passes into above-mentioned mixed gas is 10L/min.
Being coated with tin liquor composition in tin system is 96.5Sn3Ag0.5Cu, and in tin furnace kettle mouth, the temperature of tin liquor is 215 ℃, and the design temperature of cooling tank is 195 ℃, and the design temperature of heat preservation tank is 198 ℃, and the design temperature of heating tank is 215 ℃.
The finished product welding detected result of embodiment 7 is as following table:
| Project | Embodiment 1 |
| Tensile strength Rm(Mpa) | 177.28 |
| Proof strength of non-proportional Rp0.2(Mpa) | 50.44 |
| Outward appearance and list edge | Qualified |
Embodiment 8
Difference from Example 1 is, control the rotating speed of live roll in S roller drive disk assembly, the speed that traction copper strips enters activation annealing stove is 3.5m/min, the annealing temperature of activation annealing stove is 780 ℃, to activator, adding the composition that passes into activated gas in entrance is the mixed gas of hydrogen and nitrogen, wherein the volume content of hydrogen is 40%, and the flow that passes into above-mentioned mixed gas is 20L/min.
Being coated with tin liquor composition in tin system is 96.5Sn3Ag0.5Cu, and in tin furnace kettle mouth, the temperature of tin liquor is 210 ℃, and the design temperature of cooling tank is 192 ℃, and the design temperature of heat preservation tank is 192 ℃, and the design temperature of heating tank is 210 ℃.
The finished product welding detected result of embodiment 8 is as following table:
| Project | Embodiment 1 |
| Tensile strength Rm(Mpa) | 177.50 |
| Proof strength of non-proportional Rp0.2(Mpa) | 51.93 |
| Outward appearance and list edge | Qualified |
Embodiment 9
Difference from Example 1 is, control the rotating speed of live roll in S roller drive disk assembly, the speed that traction copper strips enters activation annealing stove is 2.5m/min, the annealing temperature of activation annealing stove is 880 ℃, to activator, add in entrance and pass into the mixed gas that volume ratio is the liquor-saturated steam of second, hydrogen and the nitrogen of 2:3:5, the flow that passes into above-mentioned mixed gas is 35L/min.
Being coated with tin liquor composition in tin system is 63Sn35Ag2Ag, and in tin furnace kettle mouth, the temperature of tin liquor is 265 ℃, and the design temperature of cooling tank is 225 ℃, and the design temperature of heat preservation tank is 205 ℃, and the design temperature of heating tank is 265 ℃.
The finished product welding detected result of embodiment 9 is as following table:
| Project | Embodiment 1 |
| Tensile strength Rm(Mpa) | 176.16 |
| Proof strength of non-proportional Rp0.2(Mpa) | 53.47 |
| Outward appearance and list edge | Qualified |
Embodiment 10
Difference from Example 1 is, control the rotating speed of live roll in S roller drive disk assembly, the speed that traction copper strips enters activation annealing stove is 1.5m/min, the annealing temperature of activation annealing stove is 820 ℃, to activator, add the mixed gas that passes into hydrogen, water vapor and nitrogen that volume ratio is 3:3:4 in entrance, the flow that passes into above-mentioned mixed gas is 15L/min.
Being coated with tin liquor composition in tin system is 96.5Sn3Ag0.5Cu, and in tin furnace kettle mouth, the temperature of tin liquor is 218 ℃, and the design temperature of cooling tank is 200 ℃, and the design temperature of heat preservation tank is 200 ℃, and the design temperature of heating tank is 218 ℃.
The finished product welding detected result of embodiment 10 is as following table:
| Project | Embodiment 1 |
| Tensile strength Rm(Mpa) | 175.82 |
| Proof strength of non-proportional Rp0.2(Mpa) | 51.53 |
| Outward appearance and list edge | Qualified |
Comparative example 1
The method that adopts prior art by hard copper strips successively through cutting, rolling, annealing, blowing, pickling, washing, prefluxing, preheating, painting tin, cooling, winding process.The detected result of gained tin-coated welding strip is as following table:
To embodiment 10 finished product welding detected results as following table:
| Project | Embodiment 1 |
| Tensile strength Rm(Mpa) | 165.55 |
| Proof strength of non-proportional Rp0.2(Mpa) | 72.85 |
| Outward appearance and list edge | Qualified |
Comparative example 2
The method that adopts prior art by soft state copper strips successively through cutting, rolling, blowing, pickling, washing, prefluxing, preheating, painting tin, cooling, winding process.The detected result of gained tin-coated welding strip is as following table:
| Project | Embodiment 1 |
| Tensile strength Rm(Mpa) | 179.19 |
| Proof strength of non-proportional Rp0.2(Mpa) | 83.73 |
| Outward appearance and list edge | Qualified |
From above each embodiment, find out with the comparing result of comparative example, adopt the Proof strength of non-proportional of tin-coated welding strip of production system of the present invention and production method production all lower than 60 Mpa, and far below the numerical value of comparative example.
The present invention is not limited to above-described embodiment, for example, the composition of tin liquor can be for Sn-Bi also, Sn-Bi-Ag is, Sn-Zn is aluminium alloy, every on the basis of technical scheme disclosed by the invention, those skilled in the art is according to disclosed technology contents, do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all within the scope of the invention.
Claims (2)
1. the production method of a cleanliness without any pollution ultra-soft tin coated welding, it is characterized in that, hard state copper strips is cut into coiled strip and be placed on discharge plate, make copper strips successively through blowing pinch roll, tension-detecting mechanism, activation annealing stove, painting tin system, S roller drive disk assembly, list edge detection part and material-receiving system, described activation annealing stove comprises the annealing body of heater being obliquely installed, and the welding inlet end of annealing body of heater is higher than exit end, in annealing body of heater, along welding throughput direction, be provided with for running through the annealing boiler tube of welding, it is external that annealing furnace is stretched out at annealing boiler tube two ends, the tube wall that described annealing boiler tube stretches out annealing body of heater exit end is provided with activator and adds entrance, and the exit end of annealing boiler tube extends to the tin liquor inside of tin stove, the inlet end of annealing boiler tube top is provided with firing point, the tin stove liquid level below that is coated with tin system is provided with for the sinking roller around welding, described S roller drive disk assembly is arranged at the rear of cooling-part for controlling welding discharging speed, the speed that copper strips enters activation annealing stove is 1.0 ~ 5.0m/min, the annealing temperature of activation annealing stove is 605 ℃ ~ 900 ℃, to activator, add the mixed gas that the composition that passes into activated gas in entrance is one or several and nitrogen or argon gas in carbon monoxide, hydrogen, alcohol vapour and/or water vapour, wherein the volume content of carbon monoxide, hydrogen, alcohol vapour and/or water vapour is 10 ~ 80%, and the flow that passes into described mixed gas is 10 ~ 50L/min, in tin stove, the painting Xi Wendu of tin liquor is 210 ℃ ~ 280 ℃, and the composition of described tin liquor is 60Sn40Pb, 63Sn37Pb, 62Sn36Pb2Ag, 63Sn35Pb2Ag or 96.5Sn3Ag0.5Cu.
2. production method according to claim 1, is characterized in that, described activated gas is the mixed gas of hydrogen and nitrogen, and wherein the volume percent of hydrogen is 10 ~ 80%.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103794662B (en) * | 2014-01-20 | 2016-08-17 | 苏州爱康光电科技有限公司 | solar battery sheet |
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| CN105349764A (en) * | 2015-12-14 | 2016-02-24 | 苏州宇邦新型材料股份有限公司 | Photovoltaic welding strip cooling and annealing device and method |
| CN107557561A (en) * | 2017-08-08 | 2018-01-09 | 东莞市灿煜金属制品有限公司 | The copper material stress-removal process of appropriateness drop hardness |
| CN107574391A (en) * | 2017-08-08 | 2018-01-12 | 东莞市灿煜金属制品有限公司 | The aluminium stress-removal process of appropriateness drop hardness |
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| CN102383084A (en) * | 2011-11-03 | 2012-03-21 | 江苏太阳光伏科技有限公司 | Production system and production method of extremely-soft tin-coated welding strip |
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| CN102383084A (en) * | 2011-11-03 | 2012-03-21 | 江苏太阳光伏科技有限公司 | Production system and production method of extremely-soft tin-coated welding strip |
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| JP特开平8-199325A 1996.08.06 |
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| CN103794662B (en) * | 2014-01-20 | 2016-08-17 | 苏州爱康光电科技有限公司 | solar battery sheet |
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