CN101161837A - Molten tin antioxidant additive - Google Patents
Molten tin antioxidant additive Download PDFInfo
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- CN101161837A CN101161837A CNA2006101319471A CN200610131947A CN101161837A CN 101161837 A CN101161837 A CN 101161837A CN A2006101319471 A CNA2006101319471 A CN A2006101319471A CN 200610131947 A CN200610131947 A CN 200610131947A CN 101161837 A CN101161837 A CN 101161837A
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Abstract
The invention relates to the metal oxidation resistance protection technical field, in particular to a tin solution oxidation resistance additive used for all situations with tin solution. The tin solution oxidation resistance additive consists of tin of 93 percent to 97 percent and phosphorus of 4 percent to 7 percent (weight percentage). When phosphorus content is from 5 percent to 6 percent (weight percentage), the using effect is the best. The using effect is optimal when the microelement Ni and Al are added into the additive. Because the phosphorus with strong metal restoration is used as deoxidized material, the phosphorus and the tin are formed into intermediate alloy by special method. The intermediate alloy can enable the surface of tin solution to form reducing atmosphere with high efficiency for long time and cooperate with tin oxidized membrane layer to perform oxidation resistance protection for the tin solution. The generating quantity of tin slag can be reduced by 20 times after using the invention and the surface of tin products or tin coating products is uneasy to oxidize and is kept pretty silvery white for long time.
Description
Technical field
The present invention relates to metal oxidation resistance resist technology field.Especially a kind of molten tin antioxidant additive can be applicable to occasions such as hot tinning, tinwork preparation, tin solder preparation, and its purpose is to significantly reduce the oxidization burning loss of tin in the tin liquor, reduces the generation of scruff.
Background technology
Occasions such as hot tinning are not in the past used antioxidant addn substantially, and tin is a kind of more active metal, particularly under molten state, are easy to oxidizedly, generate the oxide film of one deck densification after the tin oxidation, and this layer oxide film often can stop the further oxidation of tin.But in most of industrial occasions, such as the hot tinning copper cash, the copper cash that tin liquor is run always stirs, and oxide film is constantly destroyed, makes soldering tin oxidized constantly, and oxide film encloses copper cash easily, makes copper cash become waste product.Therefore it is very necessary adding antioxidant.
Some producer adds metals such as antimony, aluminium, lead in the tin stove, though these metals have certain antioxidant effect, but the DeGrain of antimony element, lead is poisonous element in addition, forbidden both at home and abroad to use in electronic product, and aluminium element is difficult to be fused in the tin liquor, often need in tin slab, to allocate in advance, increase operation so greatly, raise the cost, and can not receive good antioxidant effect.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of efficient molten tin antioxidant additive, when in tin liquor, adding this product, scruff is reduced greatly, reduce the scaling loss of tin greatly.
The technical solution adopted for the present invention to solve the technical problems is: a kind of molten tin antioxidant additive, its special character is: be made up of 93%～97% tin, 4%～7% phosphorus (weight percent).Its main action component is a phosphoric, and phosphorus is the first-selected element of liquid metal deoxidation, possesses powerful reductibility, can form alloy with most metals again, and energy long period stable existence finishes until effect in tin liquor.
According to above-mentioned a kind of molten tin antioxidant additive, technical scheme is the tin phosphorus master alloy that is made into high content of phosphorus preferably, in use this alloy is got final product with a certain amount of being spilled in the tin liquor, the convenient use.According to tin phosphorus binary alloy phase diagram and test in a large number and detect, when determining to be 4%～7% (weight percent) with P content, alloy can very solving tin liquor effectively produces this phenomenon of a large amount of scruffs.
According to above-mentioned a kind of molten tin antioxidant additive, its optimal components proportioning is when phosphorus content is 5%～6% (weight percent), alloy preparation most convenient, and result of use the best.
According to above-mentioned a kind of molten tin antioxidant additive, when hot tinning, when in the tin phosphorus alloy, allocating little metal nickel and metallic antimony into, can make the tin not oxidation for a long time of hot tinning product surface, keep beautiful silvery white for a long time, result of use is more perfect.
The design of the technology of the present invention and the foundation of realization are as follows:
Tin is a kind of active metal, can with a large amount of metals or nonmetal formation alloy, when forming alloy with metals such as Ni, Sb, Pb, the erosion resistance of tin strengthens.Phosphorus is that a kind of reductibility intensive is nonmetal, even can spontaneous combustion take place in air, is introduced in the liquid metal, builds reducing atmosphere can for undoubtedly liquid metal, significantly reduces the oxidization burning loss of liquid metal.
In liquid tin, there is segregation (phenomenon of uneven components) in alloying element, particularly has gravity segregation, proportion than the big element of tin easily in the enrichment of tin furnace bottom, and proportion than the little element of tin easily in the enrichment of tin liquor top.In these characteristics of the positive good utilisation of tin phosphorus alloy, in the ruined place of tin liquor surface film oxide, phosphorus can be built reducing atmosphere to tin liquor rapidly, make the unlikely quick and vigorous oxidation of tin liquor, after very thin layer oxide film formed, phosphorus can continue again to be free in the middle of the tin liquor unlikely losing.Therefore the phosphorus in the tin liquor can be had an effect unlikely again waste in the time of unwanted in needs.
The mode that adds phosphorus must add in the mode of master alloy, and this has just determined us will be made into tin phosphorus master alloy.This be because, if directly in tin liquor, add phosphorus powder in use occasion, phosphorus powder density is too low first, second phosphorus needs higher temperature just can fuse in the tin liquor, can not immerse in the middle of the tin liquor at all, and promptly gasified even burn, can not guarantee the adding of phosphorus at all, bring great inconvenience and dangerous to production simultaneously.Therefore, need preparation tin phosphorus alloy, the tin phosphorus alloy is generally prepared with pyrogenic process, can make the phosphorus weight percent content and be 7% with interior tin phosphorus alloy, tin phosphorus alloy density and pure tin are approaching, can not burn, and in the tin liquor of any temperature, can melt fast, therefore be specially adapted to occasions such as hot tinning, tin alloy melting.
The fusing point of the comparable pure tin of liquidus temperature of tin phosphorus master alloy exceeds about 300 ℃, and the liquid-solid two-phase temperature province is very wide, and castability is better.In addition, the tin phosphorus alloy is a kind of fragility master alloy, particularly P content 4% when above, that this master alloy is easy to be struck is disconnected, break into pieces, this helps sampling, metering when producing, and therefore the very convenient producer's batching and use are the ideal master alloys.
The invention has the beneficial effects as follows: can effectively suppress the oxidation of tin liquor, reduce the generation of scruff, for improving tin product lumber recovery, raising hot tinning products production rate etc. has unusual effect, and cost is low.
In final tin product, because the content of phosphorus is low especially, except increasing to the intensity of tin and corrosion resistance, it does not have " side effect " to the not influence of other physical and mechanical property of tin.
The invention will be further described below in conjunction with embodiment:
Embodiment one: in no slicker solder copper electronic brazing filler metal production scene, smelting furnace is an iron crucible, and alloy liquid composition is tin copper (0.7wt%Cu), and fuel is diesel oil.The gross weight of every stove is about 300Kg, and fusing time is about half an hour, and is even for guaranteeing composition, takes mechanical stirring.For this reason, when not taking antioxidant addn, every stove produces scruff weight more than 10Kg.Use product of the present invention, when stirring beginning, in the tin stove, add tin phosphorus master alloy (Sn-5wt%P) 1Kg, during to fusing end cast, only produce about tin ash 0.5Kg.The amount of oxidation of tin has reduced nearly 20 times, has improved lumber recovery, has reduced " dragging for slag " operation when producing simultaneously, has improved productivity.
Embodiment two: in the tinned wird production scene, smelting furnace is an iron crucible, fills about tin liquor 200kg, constant temperature is 270～280 ℃, is that the red copper wire of Φ 0.1mm carries out hot tinning with 200m/min speed to diameter, when not using antioxidant addn, per hour produces the about 1Kg of scruff.Use product of the present invention, when stirring beginning, in the tin stove, add tin phosphorus master alloy (Sn-5wt%P) 1Kg, produce scruff every day less than 1Kg.The amount of oxidation of tin has reduced more than 20 times, has improved the rate of utilization of tin greatly and has improved the lumber recovery of tinned wird, has reduced " dragging for slag " operation when producing simultaneously, has improved productivity.
Embodiment three: in the tinned wird production scene, on the basis of embodiment two, when using tin phosphorus master alloy, add little metal nickel and antimony in tin liquor, the generation of scruff can be still less, and the surface of tinned wire light more.This tinned wire was toasted one hour under 270 ℃ of baking oven constant temperature, and the nondiscoloration of tin layer do not come off.
Claims (3)
1. a molten tin antioxidant additive is characterized in that: be made up of 93%～97% tin, 4%～7% phosphorus (weight percent).
2. molten tin antioxidant additive according to claim 1 is characterized in that: when phosphorus content is 5%～6% (weight percent), and result of use the best.
3. according to claim 1 and 2 described molten tin antioxidant additives, it is characterized in that: when adding micro-Ni and Al in the additive, result of use is better.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101319471A CN101161837A (en) | 2006-10-11 | 2006-10-11 | Molten tin antioxidant additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101319471A CN101161837A (en) | 2006-10-11 | 2006-10-11 | Molten tin antioxidant additive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101161837A true CN101161837A (en) | 2008-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2006101319471A Pending CN101161837A (en) | 2006-10-11 | 2006-10-11 | Molten tin antioxidant additive |
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| CN (1) | CN101161837A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477501A (en) * | 2010-11-22 | 2012-05-30 | 中国科学院金属研究所 | Atmospheric corrosion resisting industrial pure Sn and application thereof |
| CN103436732A (en) * | 2013-08-15 | 2013-12-11 | 江西理工大学 | Efficient tin liquor antioxidant additive |
| CN105355258A (en) * | 2015-11-13 | 2016-02-24 | 芜湖楚江合金铜材有限公司 | High-performance tin-coated copper wire |
| CN110029381A (en) * | 2019-04-25 | 2019-07-19 | 首钢集团有限公司 | A kind of production method of high tin coating weight tin plate |
| CN110218961A (en) * | 2019-06-03 | 2019-09-10 | 蓬莱联泰电子材料有限公司 | A kind of hot dip scaling powder and hot-dipping method |
| CN110306091A (en) * | 2019-07-18 | 2019-10-08 | 深圳前海量子翼纳米碳科技有限公司 | A kind of high wellability low thermal resistance liquid metal sheet and preparation method thereof |
| 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 |
-
2006
- 2006-10-11 CN CNA2006101319471A patent/CN101161837A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477501A (en) * | 2010-11-22 | 2012-05-30 | 中国科学院金属研究所 | Atmospheric corrosion resisting industrial pure Sn and application thereof |
| CN103436732A (en) * | 2013-08-15 | 2013-12-11 | 江西理工大学 | Efficient tin liquor antioxidant additive |
| CN103436732B (en) * | 2013-08-15 | 2016-05-04 | 江西理工大学 | A kind of efficient molten tin antioxidant additive |
| CN105355258A (en) * | 2015-11-13 | 2016-02-24 | 芜湖楚江合金铜材有限公司 | High-performance tin-coated copper wire |
| CN110029381A (en) * | 2019-04-25 | 2019-07-19 | 首钢集团有限公司 | A kind of production method of high tin coating weight tin plate |
| CN110218961A (en) * | 2019-06-03 | 2019-09-10 | 蓬莱联泰电子材料有限公司 | A kind of hot dip scaling powder and hot-dipping method |
| CN110306091A (en) * | 2019-07-18 | 2019-10-08 | 深圳前海量子翼纳米碳科技有限公司 | A kind of high wellability low thermal resistance liquid metal sheet and preparation method thereof |
| CN110306091B (en) * | 2019-07-18 | 2021-01-08 | 深圳前海量子翼纳米碳科技有限公司 | High-wettability low-thermal-resistance liquid metal sheet and preparation method thereof |
| 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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Open date: 20080416 |