CN103131986B - Low zinc hot dipping aluminium alloy plating material containing Ca multi-combination metamorphism - Google Patents
Low zinc hot dipping aluminium alloy plating material containing Ca multi-combination metamorphism Download PDFInfo
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- CN103131986B CN103131986B CN201110386261.8A CN201110386261A CN103131986B CN 103131986 B CN103131986 B CN 103131986B CN 201110386261 A CN201110386261 A CN 201110386261A CN 103131986 B CN103131986 B CN 103131986B
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Abstract
The invention discloses low zinc hot dipping aluminium alloy plating material containing Ca multi-combination metamorphism. The composition of alloy comprises, by element weight, 10%-13% of Zn, 5.0% of alloy enhancer Cu, 0.03 % of polarization metamorphic agent Ca, 0.2 % of solvent passivator Mo and 0.5% of rare earth addition, and the rest of the composition of the alloy are A1 and micro impurities which are unavoidable. The low zinc hot dipping aluminium alloy plating material containing the Ca multi-combination metamorphism solves the problems that due to dissolution of iron in a hot dipping plating process, zinc liquid viscosity is enabled to be increased and the capability of the surface of an infiltrating steel matrix is reduced, the thickness of a zinc layer is obviously increased due to the fact that iron content in zinc liquid is increased, and therefore ductility and the appearance of the a plating layer are enabled to be poor, and other problems are solved too. The aluminium alloy plating material for hot dipping is obtained, wherein the aluminium alloy plating material for hot dipping is good in matrix wettability, strong in binding force, high in strength, good in extensibility, high temperature-resistance, thin in plating layer, and strong in corrosion resistance.
Description
Technical field
The present invention relates to a kind of aluminum alloy coating material, particularly containing the low zinc aluminum alloy plating material for hot-dip plating that the many combinations of Ca are rotten.
Background technology
Due to carbon containing in ferrous materials, the more high more material of carbon content is more easily corroded, the temperature of environment residing for iron and steel, humidity, oxicity, the potential of hydrogen of environment all can have impact to corrosion, temperature is higher, humidity is larger, more containing oxygen, the environment of peracid all can accelerate erosion rate greatly, current control ferrous materials corrosion is anticorrosion mainly through increasing metal plating at steel surface, in metal plating antisepsis, galvanizing is acknowledged as the most directly one of method protecting iron and steel, the maxima solubility of iron in zinc liquid is 0.02%, if iron level continues to increase, then iron is just combined into iron-zinc alloy with zinc, be commonly referred to grit or cadmia, because its proportion is larger, thus the bottom of a pan is sunken to gradually.In galvanizing process, due to the dissolving of iron, zinc fluid viscosity is increased, the ability infiltrating steel matrix surface reduces.In addition, in zinc liquid, iron level increases, and zinc coating thickness also obviously increases, and thus makes coating ductility and outward appearance degenerate.
Summary of the invention
The technical problem to be solved in the present invention is: provide containing the rotten low zinc aluminum alloy plating material for hot-dip plating of the many combinations of Ca, to solve: due to the dissolving of iron in hot dip process process, zinc fluid viscosity is increased, infiltrate steel matrix surface ability reduce and due in zinc liquid iron level increase, zinc coating thickness also obviously increases, and thus makes the problems such as coating ductility and outward appearance degenerate.
Technical scheme of the present invention:
A kind of low zinc aluminum alloy plating material for hot-dip plating rotten containing the many combinations of Ca, by element weight percent, this alloying constituent is Zn:10 ~ 13, alloy strengthening agent Cu:5.0, polarization alterant Ca:0.03, solvent deactivation agent Mo:0.2, precipitation hardening agent Sn:0.1, grain-refining agent Zr:0. 1, basal body interface reaction buffer Fe:0.5, rare earth addition: 0.5, all the other are Al and inevitable trace impurity.
Rare earth addition is a certain rare earth element in 17 kinds of rare earth elements, or more than one mixed rare-earth elements.
Beneficial effect of the present invention:
In the present invention, the effect of Ca and various alterant is as follows:
Ca: the effect having the eutectic temperature of less reduction aluminium alloy, the crystallization of refining eutectic silicon, but generally it is not used as alterant, just in the fusing and insulation of aluminium alloy, it is used as the anti-oxidation flux with deoxidation.In aluminium diecast alloy, add the Ca of 0.01% ~ 0.03%, significantly can increase the wetting fusion faculty of aluminium alloy, reduce cold shut, avoid sticking to mould.
Cu: it is mainly through forming soluble metallic compound strengthening phase with other elements, plays the effect improving alloy strength and thermotolerance, copper add the potential difference that can reduce intracrystalline and intergranular, thus improve the effect of alloy opposing stress corrosion.
Solvent deactivation agent Mo, can in the acid-and base-resisting of solvent surface enrichment one deck, salt and hot environment atomospheric corrosion, have grid under microcosmic concurrently and fix protection and mobility automatically covers damage surface and plays the passivation film of defencive function.
Grain-refining agent Zr, when high temperature by dissolving, spreading and disperse, become nano level and even more tiny foreign atom cluster and stable molecular cluster, tiny " crystal seed ", gap phase and the interstitial compound that are evenly distributed in a large number are provided when melt cooling crystallization, the grain size number of efficient refinement matrix, improve the intensity of coating material, toughness, hardness, wear resistance and high-temperature behavior, and then improve processibility and the weldability of plating piece.
Rare earth addition, rare earth element can form these refractory metal compound disperses of compound between stable refractory metal and be distributed in intergranular in netted or skeleton shape and interdendritic in aluminium alloy, and with matrix mortise, serve strengthening and the effect of stable crystal boundary.Simultaneously, the AlSiLa phase of some amount is also formed in alloy, because its fusing point and hardness are very high, therefore to putting forward heavy alloyed thermotolerance and wear resistance all has good effect, there is the multiple booster action of atomic polarization, alloy strengthening, grain refining, surface-beautifying, dehydrogenation and enhancing erosion resistance simultaneously, the effect of alloy strengthening agent, solvent deactivation agent, grain-refining agent, and compensate its defect.
Precipitation hardening agent Sn, add this small amount of dvielement, nearly elemental stage is kept in alloy system, under the state that although system is solidified but temperature is still higher, they still keep liquid, thus making system macroscopically possess semi-solid state feature, the strengthening state (precipitation hardening or precipitation-hardening) being converted into reality for accelerating strengthening element in alloy in ageing strengthening process provides condition; Reduce and prevent alloy from producing sodium fragility, improving the ability of Alloy Anti thermal crack, the excellent processing characteristics of alloy and wear resisting property can be given simultaneously; By controlling the addition of precipitation hardening elements, plating piece surface detail can also be obtained.
Basal body interface reaction buffer Fe, can effectively suppress the combination reaction violent between Al and Fe matrix when immersion plating, reduces or stops to generate " lensing Fe
2al
5", strengthening " lamelliform Fe
2al
5" generting machanism, set up the reaction mechanism of Fe-Al-Zn uniform gradient, thus improve quality of coating, thinning thickness of coating, save material.And Fe can increase the wetting fusion faculty of alloy.
The present invention utilizes Al to discuss zinc for main raw material is aided with, by adding above-mentioned various metallic element, solve the dissolving due to iron in hot dip process process, zinc fluid viscosity is increased, infiltrate steel matrix surface ability reduce and due in zinc liquid iron level increase, zinc coating thickness also obviously increases, thus make the problems such as coating ductility and outward appearance degenerate, obtain have base steel wettability is good, bonding force is strong, intensity is high, good-extensibility, high temperature resistant, coating is thin, solidity to corrosion is strong, processibility and the high-quality iron and steel aluminum alloy coating material used for hot dip galvanizing such as weldability is good.
Embodiment
The present invention is by element weight percent, this alloying constituent is Zn:10 ~ 13, alloy strengthening agent Cu:5.0, polarization alterant Ca:0.03, solvent deactivation agent Mo:0.2, precipitation hardening agent Sn:0.1, grain-refining agent Zr:0. 1, basal body interface reaction buffer Fe:0.5, rare earth addition: 0.5, all the other are Al and inevitable trace impurity.
By the selected group element of formula combination table, according to weight percent be: polarization alterant Ca:0.03, alloy strengthening agent Cu:5.0, solvent deactivation agent Mo:0.2, precipitation hardening agent Sn:0.1, grain-refining agent Zr:0.1, rare earth addition: 0.5, basal body interface reaction buffering element Fe:0.5, the second solvent element Zn:13, surplus is Al;
Rare earth addition is a certain rare earth element in 17 kinds of rare earth elements, or more than one mixed rare-earth elements.
The alloy total amount of preparation is 1000kg, then the weight extrapolating often kind of required material is: Cu:50kg, Ca:0.3kg, Mo:2kg, Sn:1kg, Zr:1kg, Fe:5kg, rare earth addition: 5kg, Zn:130kg, Al:805.7 kg.
Conveniently preparation method, first adds aluminium ingot or molten aluminum liquid in smelting furnace, and heating makes it to melt completely and is incubated at 700 ~ 800 DEG C;
Add basal body interface reaction buffer, polarization alterant, solvent deactivation agent, grain-refining agent, alloy strengthening agent, rare earth addition and precipitation hardening agent by formula rate again, finally add zinc again, stir; On-site sampling is analyzed, according to analytical results and formula range, and adjustment addition; Then melting and stirring, again sampling analysis is continued, until each element ratio meets recipe requirements completely.
Then furnace refining is carried out to above-mentioned alloy melt; In alloy melt, add refining agent, and stir, melt refining completes in enclosed environment.
Slagging-off after refining, degasification, leave standstill, temperature adjustment to 660 ~ 720 DEG C, aluminium alloy is toppled over and is come out of the stove, and filters simultaneously; In filtrate mild impouring casting ingot mould, by sequential crystallization mode, melt is condensed in ingot mould from bottom to top, form silvery white ingot shape.
According to formula of the present invention, adopt conventional hot dip material producing process condition, can the present invention be realized.
Claims (2)
1. the low zinc aluminum alloy plating material for hot-dip plating gone bad containing the many combinations of Ca, it is characterized in that: by element weight percent, this alloying constituent is Zn:10 ~ 13, alloy strengthening agent Cu:5.0, polarization alterant Ca:0.03, solvent deactivation agent Mo:0.2, precipitation hardening agent Sn:0.1, grain-refining agent Zr:0. 1, basal body interface reaction buffer Fe:0.5, rare earth addition: 0.5, all the other are Al and inevitable trace impurity.
2. the low zinc aluminum alloy plating material for hot-dip plating rotten containing the many combinations of Ca according to claim 1, is characterized in that: rare earth addition is a certain rare earth element in 17 kinds of rare earth elements, or more than one mixed rare-earth elements.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110386261.8A CN103131986B (en) | 2011-11-29 | 2011-11-29 | Low zinc hot dipping aluminium alloy plating material containing Ca multi-combination metamorphism |
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| CN201110386261.8A CN103131986B (en) | 2011-11-29 | 2011-11-29 | Low zinc hot dipping aluminium alloy plating material containing Ca multi-combination metamorphism |
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| CN103131986A CN103131986A (en) | 2013-06-05 |
| CN103131986B true CN103131986B (en) | 2015-05-20 |
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| CN107378273B (en) * | 2017-08-23 | 2019-01-22 | 台山市智雅汇五金制品有限公司 | A kind of aluminium alloy laser drilling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0202044B1 (en) * | 1985-04-27 | 1989-08-30 | Showa Aluminum Kabushiki Kaisha | Aluminium alloy |
| CN1065101A (en) * | 1992-04-29 | 1992-10-07 | 东南大学 | The new hot-dip aluminium plating technology of steel and ironcasting |
| CN101104911A (en) * | 2007-08-16 | 2008-01-16 | 无锡麟龙铝业有限公司 | Multicomponent alloy coating material for high corrosion resistance coating steel products and manufacturing method thereof |
| CN101104910A (en) * | 2007-08-16 | 2008-01-16 | 无锡麟龙铝业有限公司 | Multicomponent alloy coating material for high corrosion resistance coating steel products and manufacturing method thereof |
| CN101405421A (en) * | 2006-03-20 | 2009-04-08 | 新日本制铁株式会社 | Highly corrosion-resistant hot dip galvanized steel stock |
-
2011
- 2011-11-29 CN CN201110386261.8A patent/CN103131986B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0202044B1 (en) * | 1985-04-27 | 1989-08-30 | Showa Aluminum Kabushiki Kaisha | Aluminium alloy |
| CN1065101A (en) * | 1992-04-29 | 1992-10-07 | 东南大学 | The new hot-dip aluminium plating technology of steel and ironcasting |
| CN101405421A (en) * | 2006-03-20 | 2009-04-08 | 新日本制铁株式会社 | Highly corrosion-resistant hot dip galvanized steel stock |
| CN101104911A (en) * | 2007-08-16 | 2008-01-16 | 无锡麟龙铝业有限公司 | Multicomponent alloy coating material for high corrosion resistance coating steel products and manufacturing method thereof |
| CN101104910A (en) * | 2007-08-16 | 2008-01-16 | 无锡麟龙铝业有限公司 | Multicomponent alloy coating material for high corrosion resistance coating steel products and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 铝中杂质对其性能的影响;《资源再生》;20080515(第05期);44页左栏第1段，右栏第3段 * |
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