CN105252163A - Lead-free tin-soldering wire applied to automatic soldering robot and preparation method thereof - Google Patents
Lead-free tin-soldering wire applied to automatic soldering robot and preparation method thereof Download PDFInfo
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- CN105252163A CN105252163A CN201510782839.XA CN201510782839A CN105252163A CN 105252163 A CN105252163 A CN 105252163A CN 201510782839 A CN201510782839 A CN 201510782839A CN 105252163 A CN105252163 A CN 105252163A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
- B23K35/262—Sn as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
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- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention relates to a lead-free tin-soldering wire applied to an automatic soldering robot and a preparation method thereof. The lead-free tin-soldering wire is characterized by comprising Cu, Se, Ni, P, Nd and Sn. The preparation method of the lead-free tin-soldering wire applied to the automatic soldering robot comprises the following steps: respectively preparing a Sn-Cu alloy, a Sn-Ge alloy, a Sn-Ni alloy, a Sn-P alloy and a Sn-Nd alloy through Cu, Ge, Ni, P, Nd and Sn according to a ratio; then heating the prepared Sn-Cu alloy in a smelting furnace, adding the Sn-Ni alloy, stirring, preserving heat, then adding the Sn-Ge alloy and the Sn-Nd alloy, then cooling, adding the Sn-P alloy, finally reducing the temperature of the furnace to 300-340 DEG C, preserving heat, discharging the alloys out of the furnace to prepare a soldering flux column; extruding and drawing to obtain the lead-free tin-soldering wire. The lead-free tin-soldering wire can be suitable for the soldering flux of various automatic soldering robots in a large range; the defects of continuous tin, lcicles and tin balls can be reduced and solved to a maximum extent; the lead-free tin-soldering wire is high in corrosion resistance; crystals are thinned; the resistance to high temperature of the welding flux is improved; the advantage and the effect of oxidation resistance of soldering points are improved.
Description
Technical field
The present invention relates to the lead-free soldering wire of a kind of automatic welding machine people, belong to electronic solder field.
The invention still further relates to the preparation method of the lead-free soldering wire of this automatic welding machine people.
Technical background
Along with the high speed development of electronics industry, due to human weld's inefficiency, labor cost is more and more higher, and many producers are used for substituting with automatic welding machine people gradually and manually carry out solder stick welding.Automatic welding machine people welding efficiency is higher than artificial, and cost advantage is obvious, accurate by tin amount, and waste residue amount reduces, but also significantly there are some shortcomings, cannot the mass defect of butt welding point carry out judging and mending tin as people.Solder at present used on automatic welding machine people mainly Sn ?0.7Cu, Sn ?3.0Ag ?0.5Cu, Sn ?0.3Ag ?the kind such as 0.7Cu, in automatic welding machine people use procedure, the defect of common existence mainly contains: connect tin, draw point, tin sweat(ing).According to the development trend of industry 4.0, automatic welding machine people universalness faster, this just has higher requirement to solder quality, solder enterprise in the urgent need to developing a kind of solder that can be applicable to various automatic welding machine people on a large scale, and can at utmost reduce and solve as connected tin, drawing the defect such as point, tin sweat(ing).
Summary of the invention
Object of the present invention is just in order to the shortcoming that overcomes prior art is with not enough and provide the lead-free soldering wire of a kind of automatic welding machine people, thus can effectively reduce connect tin, draw point, tin sweat(ing) defect, improve the lead-free soldering wire of a kind of automatic welding machine people of the wetability of solder, non-oxidizability and ductility.
The present invention also provides the preparation method of this lead-free soldering wire.
The object of the invention is to be realized by following technical proposal:
A kind of automatic welding machine people lead-free soldering wire, is made up of following materials:
Cu:0.3 ?0.9%, Ge:0.1 ?0.5%, Ni:0.01 ?0.08%, P:0.003 ?0.01%, Nd:0.01 ?0.05%, surplus is Sn.
Ge element is added, its percentage by weight 0.1 ~ 0.5% described in the present invention.The fusing point of Ge element is 938.3 DEG C.Sn ?the eutectic temperature of Ge alloy near 231.1 DEG C, now the content of Sn is 99.84%.The surface-active of germanium makes it be gathered in liquid solder surface presentation positive absorption, liquid solder surface free energy is reduced, and then improves the wetability of solder, improve solder high-temperature oxidation resistance; Add nickel element, its percentage by weight 0.01 ~ 0.08%.Nickel element has high-melting-point, high ductibility, crystallization refinement, the characteristic such as anticorrosive, improves solder joint brightness and ductility; Add P elements, its percentage by weight 0.003 ?0.01%.P elements has good oxidation resistance, promotes postwelding solder joint non-oxidizability; Add rare earth neodymium element, its percentage by weight 0.01 ~ 0.05%.Neodymium element has high-melting-point, good corrosion resistance, and refinement crystallization, improves the resistance to elevated temperatures of solder, improve postwelding solder joint non-oxidizability.
An automatic welding machine people's lead-free soldering wire preparation method, carries out in the steps below:
(a), by Sn ?Cu, Sn ?Ge, Sn ?Ni, Sn ?P, Sn ?Nd press material rate and be equipped with, drop into high-temperature smelting pot respectively, 800 ?the high-temperature smelting pot of 1500 DEG C fully merge, stir 5 ?10 minutes, be incubated 15 ?after 20 minutes respectively obtained Sn ?Cu alloy, Sn ?Ge alloy, Sn ?Ni alloy, Sn ?P alloy, Sn ?Nd alloy;
(b), by obtained by (a) step Sn ?Cu alloy be heated in a furnace 400 ?450 DEG C, drop into Sn ?Ni alloy, stir 5 minutes, then add Sn ?Ge alloy, Sn ?Nd alloy stir 5 ?10 minutes, be incubated 5 ?10 minutes;
(c), cool to 350 ?400 DEG C, add Sn ?P alloy, stir 5 ?10 minutes, be incubated 15 ?20 minutes;
(d), finally furnace temperature is dropped to 300 ?340 DEG C, be incubated 10 ?15 minutes, after alloy mixes, leave standstill and come out of the stove, cast in stainless steel mould, obtained solder post;
(e), by solder post through extruding, the product of the present invention of obtained different wire diameter specification after wire drawing: the lead-free soldering wire of a kind of automatic welding machine people.
Owing to taking above-mentioned technical method be make the present invention have political trickery with oneself compared with tool have the following advantages and effect:
A) a various automatic welding machine people's solder can be applicable on a large scale, and can at utmost reduce and solve as connected tin, drawing the defect of point, tin sweat(ing);
B) have good corrosion resistance, refinement crystallization, improves the resistance to elevated temperatures of solder, improves postwelding solder joint non-oxidizability;
C) solder that the present invention obtains is not stained with solder horn in automatic Arc Welding, and the wetability of solder is good, and the rate of spread is high, and welding effect is better;
D) micro-Ge, Ni, P, Nd of adding in solder of the present invention, be not only applicable to Sn ?Cu system solder, is also applicable to Sn ?Ag ?Cu system, Sn ?Sb system solder, yet can at utmost reduce and solve as connected tin, drawing the defect such as point, tin sweat(ing).
Detailed description of the invention
Embodiment 1:
Get Cu0.3kg, Sn19.7kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 850 DEG C, stir 5 minutes, to be incubated after 15 minutes obtained Sn ?Cu alloy, get Ge0.1kg, Sn19.9kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1300 DEG C, stir 8 minutes, to be incubated after 16 minutes obtained Sn ?Ge alloy, get Ni0.07kg, Sn19.93kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1400 DEG C, stir 10 minutes, to be incubated after 18 minutes obtained Sn ?Ni alloy, get P0.01kg, Sn19.99kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 800 DEG C, stir 8 minutes, to be incubated after 20 minutes obtained Sn ?P alloy, get Nd0.01kg, Sn19.99kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1250 DEG C, stir 8 minutes, to be incubated after 20 minutes obtained Sn ?Nd alloy,
By above-mentioned obtained Sn ?Cu alloy be heated to 420 DEG C in a furnace, drop into Sn ?Ni alloy, stir 5 minutes, then add Sn ?Ge alloy, Sn ?Nd alloy stir 5 minutes, be incubated 10 minutes; Cool to 380 DEG C, add Sn ?P alloy, stir 10 minutes, be incubated 15 minutes, finally furnace temperature dropped to 320 DEG C, be incubated 15 minutes, after alloy mixes, leave standstill and come out of the stove, cast in stainless steel mould, obtained solder post; Product of the present invention by solder post obtained Φ 0.6mm wire diameter after extruding, wire drawing: the lead-free soldering wire of a kind of automatic welding machine people.Testing result is in table 1.
Embodiment 2:
Get Cu0.5kg, Sn19.5kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 850 DEG C, stir 5 minutes, to be incubated after 18 minutes obtained Sn ?Cu alloy, get Ge0.2kg, Sn19.8kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1300 DEG C, stir 5 minutes, to be incubated after 15 minutes obtained Sn ?Ge alloy, get Ni0.03kg, Sn19.97kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1400 DEG C, stir 10 minutes, to be incubated after 20 minutes obtained Sn ?Ni alloy, get P0.006kg, Sn19.994kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 800 DEG C, stir 10 minutes, to be incubated after 15 minutes obtained Sn ?P alloy, get Nd0.02kg, Sn19.98kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1250 DEG C, stir 8 minutes, to be incubated after 20 minutes obtained Sn ?Nd alloy,
By above-mentioned obtained Sn ?Cu alloy be heated to 400 DEG C in a furnace, drop into Sn ?Ni alloy, stir 5 minutes, then add Sn ?Ge alloy, Sn ?Nd alloy stir 10 minutes, be incubated 8 minutes; Cool to 350 DEG C, add Sn ?P alloy, stir 10 minutes, be incubated 15 points, finally furnace temperature dropped to 300 DEG C, be incubated 10 minutes, after alloy mixes, leave standstill and come out of the stove, cast in stainless steel mould, obtained solder post; Product of the present invention by solder post obtained Φ 0.8mm wire diameter after extruding, wire drawing: the lead-free soldering wire of a kind of automatic welding machine people.Testing result is in table 1.
Embodiment 3:
Get Cu0.8kg, Sn19.2kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 850 DEG C, stir 8 minutes, to be incubated after 18 minutes obtained Sn ?Cu alloy, get Ge0.16kg, Sn19.84kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1300 DEG C, stir 10 minutes, to be incubated after 15 minutes obtained Sn ?Ge alloy, get Ni0.05kg, Sn19.95kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1400 DEG C, stir 10 minutes, to be incubated after 18 minutes obtained Sn ?Ni alloy, get P0.004kg, Sn19.996kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 800 DEG C, stir 5 minutes, to be incubated after 20 minutes obtained Sn ?P alloy, get Nd0.03kg, Sn19.97kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1250 DEG C, stir 10 minutes, to be incubated after 15 minutes obtained Sn ?Nd alloy,
By above-mentioned obtained Sn ?Cu alloy be heated to 420 DEG C in a furnace, drop into Sn ?Ni alloy, stir 5 minutes, then add Sn ?Ge alloy, Sn ?Nd alloy stir 10 minutes, be incubated 10 minutes; , cool to 370 DEG C, add Sn ?P alloy, stir 8 minutes, be incubated 15 minutes; Finally furnace temperature is dropped to 330 DEG C, be incubated 15 minutes, after alloy mixes, leave standstill and come out of the stove, cast in stainless steel mould, obtained solder post; Product of the present invention by solder post obtained Φ 1.0mm wire diameter after extruding, wire drawing: the lead-free soldering wire of a kind of automatic welding machine people.Testing result is in table 1.
Embodiment 4:
Get Cu0.7kg, Sn19.3kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 850 DEG C, stir 8 minutes, to be incubated after 16 minutes obtained Sn ?Cu alloy, get Ge0.35kg, Sn19.65kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1300 DEG C, stir 10 minutes, to be incubated after 20 minutes obtained Sn ?Ge alloy, get Ni0.08kg, Sn19.92kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1400 DEG C, stir 8 minutes, to be incubated after 15 minutes obtained Sn ?Ni alloy, get P0.003kg, Sn19.997kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 800 DEG C, stir 5 minutes, to be incubated after 20 minutes obtained Sn ?P alloy, get Nd0.04kg, Sn19.96kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1250 DEG C, stir 10 minutes, to be incubated after 16 minutes obtained Sn ?Nd alloy,
By above-mentioned obtained Sn ?Cu alloy be heated to 440 DEG C in a furnace, drop into Sn ?Ni alloy, stir 5 minutes, then add Sn ?Ge alloy, Sn ?Nd alloy stir 10 minutes, be incubated 5 minutes; Cool to 380 DEG C, add Sn ?P alloy, stir 5 minutes, be incubated 18 minutes, finally furnace temperature dropped to 320 DEG C, be incubated 15 minutes, after alloy mixes, leave standstill and come out of the stove, cast in stainless steel mould, obtained solder post; Product of the present invention by solder post obtained Φ 1.2mm wire diameter after extruding, wire drawing: the lead-free soldering wire of a kind of automatic welding machine people.Testing result is in table 1.
Embodiment 5:
Get Cu0.9kg, Sn19.1kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 850 DEG C, stir 10 minutes, to be incubated after 16 minutes obtained Sn ?Cu alloy, get Ge0.5kg, Sn19.5kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1300 DEG C, stir 10 minutes, to be incubated after 18 minutes obtained Sn ?Ge alloy, get Ni0.01kg, Sn19.99kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1400 DEG C, stir 5 minutes, to be incubated after 18 minutes obtained Sn ?Ni alloy, get P0.008kg, Sn19.992kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 800 DEG C, stir 8 minutes, to be incubated after 15 minutes obtained Sn ?P alloy, get Nd0.05kg, Sn19.95kg drops into high-temperature smelting pot, fully merge at the high-temperature smelting pot of 1250 DEG C, stir 6 minutes, to be incubated after 20 minutes obtained Sn ?Nd alloy,
By above-mentioned obtained Sn ?Cu alloy heat 450 DEG C in a furnace, drop into Sn ?Ni alloy, stir 5 minutes, then add Sn ?Ge alloy, Sn ?Nd alloy stir 10 minutes, be incubated 10 minutes; Cool to 400 DEG C, add Sn ?P alloy, stir 8 minutes, be incubated 16 minutes, finally furnace temperature dropped to 340 DEG C, be incubated 15 minutes, after alloy mixes, leave standstill and come out of the stove, cast in stainless steel mould, obtained solder post; Product of the present invention by solder post obtained Φ 1.0mm wire diameter after extruding, wire drawing: the lead-free soldering wire of a kind of automatic welding machine people.Testing result is in table 1.
Table 1 embodiment testing result
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example |
| Tin sweat(ing)/ | 2 | 3 | 5 | 5 | 4 | 8 |
| The rate of spread/% | 81 | 83 | 88 | 86 | 85 | 78 |
20 × basis of microscopic observation tin sweat(ing), concrete data are in table 1.
Above-mentioned embodiment is only the preferred embodiment of the present invention; can not limit the scope of protection of the invention with this, change and the replacement of any unsubstantiality that those skilled in the art does on basis of the present invention all belong to the present invention's scope required for protection.
Claims (2)
1. an automatic welding machine people lead-free soldering wire, is characterized in that it is made up of following materials:
Cu:0.3-0.9%, Ge:0.1-0.5%, Ni:0.01-0.08%, P:0.003-0.01%, Nd:0.01-0.05%, surplus is Sn.
2. the lead-free soldering wire preparation method of a kind of automatic welding machine people according to claim 1, is characterized in that it carries out in the steps below:
(a), by Sn-Cu, Sn-Ge, Sn-Ni, Sn-P, Sn-Nd presses material rate and is equipped with, and drops into high-temperature smelting pot respectively, fully merges at the high-temperature smelting pot of 800-1500 DEG C, stir 5-10 minute, be incubated after 15-20 minute and obtain Sn-Cu alloy respectively, Sn-Ge alloy, Sn-Ni alloy, Sn-P alloy, Sn-Nd alloy;
B (), the Sn-Cu alloy pressed obtained by (a) step are heated to 400-450 DEG C in a furnace, drop into Sn-Ni alloy, stir 5 minutes, then add Sn-Ge alloy, and Sn-Nd alloy stirs 5-10 minute, insulation 5-10 minute;
(c), cool to 350-400 DEG C, add Sn-P alloy, stir 5-10 minute, insulation 15-20 minute;
(d), finally furnace temperature is dropped to 300-340 DEG C, insulation 10-15 minute, after alloy mixes, leave standstill and come out of the stove, cast in stainless steel mould, obtained solder post;
(e), by solder post through extruding, the product of the present invention of obtained different wire diameter specification after wire drawing: the lead-free soldering wire of a kind of automatic welding machine people.
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| CN201510782839.XA CN105252163A (en) | 2015-11-13 | 2015-11-13 | Lead-free tin-soldering wire applied to automatic soldering robot and preparation method thereof |
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| CN201510782839.XA CN105252163A (en) | 2015-11-13 | 2015-11-13 | Lead-free tin-soldering wire applied to automatic soldering robot and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999995A (en) * | 2017-12-12 | 2018-05-08 | 云南锡业锡材有限公司 | Solder stick and its preparation process for low-temperature welding |
| CN108044253A (en) * | 2017-12-12 | 2018-05-18 | 云南锡业锡材有限公司 | The low temperature solder stick and its preparation process prepared for continuous casting and extrusion |
| CN109332940A (en) * | 2018-11-21 | 2019-02-15 | 深圳市兴鸿泰锡业有限公司 | A kind of dedicated the solder reduction of sound equipment and preparation method thereof |
| CN112756729A (en) * | 2021-01-14 | 2021-05-07 | 深圳市兴鸿泰锡业有限公司 | Automatic welding method for electronic component by using solder wire |
| CN115091072A (en) * | 2022-07-01 | 2022-09-23 | 天津市松本环保科技有限公司 | Solder wire alloy formula for automatic welding and manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107999995A (en) * | 2017-12-12 | 2018-05-08 | 云南锡业锡材有限公司 | Solder stick and its preparation process for low-temperature welding |
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| CN109332940A (en) * | 2018-11-21 | 2019-02-15 | 深圳市兴鸿泰锡业有限公司 | A kind of dedicated the solder reduction of sound equipment and preparation method thereof |
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| CN115091072A (en) * | 2022-07-01 | 2022-09-23 | 天津市松本环保科技有限公司 | Solder wire alloy formula for automatic welding and manufacturing method |
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Application publication date: 20160120 |