CN101104910A - Multicomponent alloy coating material for high corrosion resistance coating steel products and manufacturing method thereof - Google Patents
Multicomponent alloy coating material for high corrosion resistance coating steel products and manufacturing method thereof Download PDFInfo
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Abstract
The invention relates to a multi-component alloy plating material for coated steel products with high corrosion resistance and the manufacturing method thereof. The multi-component alloy is composed of Al, Si, Mg, Zn alloys and at least two rare earth elements, wherein the mass percentage of each component of the multi-component alloy is as follows: Al: 45-69 percent, Si: 0.2-3 percent, total amount of the at least two rare earth elements: 0.02-0.9 percent, Mg: 0.1-5 percent, and Zn in balance. The manufacturing method is also disclosed, which comprises compounding components at the given ratio, smelting in a smelting furnace at a smelting temperature of 750-800 DEG C, stirring in a non-contact manner, refining, slagging off, and casting to obtain an alloy ingot. The inventive coated steel product has high corrosion resistance, excellent fatigue resistance, and strong ability of binding with matrix metals; and is widely used in the industries of household electronic appliances, construction materials and automobiles.
Description
Technical field
The present invention relates to a kind of multicomponent alloy coating material and manufacture method thereof, especially a kind of multicomponent alloy coating material and manufacture method thereof of high anti-corrosion plated steel material.
Background technology
On current domestic and international market, because increasing in the fields such as household electrical appliances, building materials, automobile to pot galvanize or hot-dip galvanized alloy steel plate demand, but most manufacturer still production and use traditional hot-dip galvanizing sheet steel (band) or only contain 0.1～0.2%Al hot-dip galvanizing sheet steel (band).There are a lot of defectives in this product, work-ing life is short, only 10 years left and right sides time promptly produced the defective of corrosion, and machining property is poor, and coating causes damage easily because of stretching, particularly in that to be higher than under the condition of room temperature etch resistant properties poor, the easy embrittlement of coating and matrix metal junction, easily oxidation generates firecoat, and anti-fatigue performance is poor, after bended several times, be easy to generate be full of cracks, coating decortication phenomenon occurs.
For solving the problems of the technologies described above, prior art proposes a lot of relevant technical schemes, as author Wu Junlin-Yu Zhongxing, in two pieces of articles of " trace additives is to the hot galvanized layer Effect on Performance " that Zhu Yongda delivers on periodical " Shanghai non-ferrous metal " by name and " trace adds the influence of rare earth to the zinc base alloy coating performance ", all mention in temperature zinc layer and to add trace rare-earth element or other elements such as magnesium etc. can play beneficial effect, but these two pieces of articles only stay in learned research, how relate to various concrete elements adds on earth and does not still have final conclusion at present, even as add how many optimums at " trace additives is to the hot galvanized layer Effect on Performance " described additive containing aluminium that has been commonly used and still do not have final conclusion, and because various elements are not quite similar to the influence that hot-dip galvanizing sheet steel produced, or even opposite effect, although therefore science has recognized that in theory adding some element can play beneficial effect, but because influencing each other between element and the element causes coating material so far at most still to be made up of ternary alloy, still fail to solve the technical barrier how more alloys form, described as ending up " the research great majority still rest on laboratory stage both at home and abroad at present; have only the minority alloy to be applied to produce " in " trace additives is to the hot galvanized layer Effect on Performance ", therefore, how forming more, the coating material of multicomponent alloy is pendent technical problem always.
The applicant is by research repeatedly, overcome a technical difficult problem, successful realization the coating material formed by the Al-Zn-Si-RE quad alloy and proposed related application CN1807667A, on this basis, for further improving the performance of the coating material among the CN1807667A, the present invention has further overcome the difficult problem of technology, has done further improvement again.
Summary of the invention
At the technical barrier that only can realize ternary or quad alloy coating material in the prior art, the object of the invention is to provide a kind of multicomponent alloy coating material and manufacture method thereof of high anti-corrosion plated steel material, corrosion resistance and resistance to elevated temperatures with better raising plated steel material, prolong the work-ing life of steel, improve the surface quality of steel.
Multicomponent alloy coating material of the present invention comprises by Al, Si, Mg, Zn alloy and two kinds of multicomponent alloys that rare earth element is formed at least, the mass percent of each composition of wherein said multicomponent alloy is: Al:45～69%, Si:0.2～3%, the total amount of at least two kinds of rare earth elements: 0.02～0.9%, Mg:0.1～5%, surplus are Zn.
Wherein described at least two kinds of rare earth elements comprise Ce and La.
Wherein the total content of Ce and the La per-cent that accounts for described rare earth element total mass satisfies Ce+La 〉=85%.
Wherein said coating material also comprises trace additives, and described trace additives is Fe, Pb, and Mn, Ca, Cu, one or more among the Sb, and the total content of described trace additives is below 0.5%.
The concrete content of wherein said each composition of trace additives is respectively Fe＜0.3%, Pb＜0.1%, Mn＜0.1%, Ca＜0.1%, Cu＜0.1%, Sb＜0.1%.
Wherein said coating material also comprises at least a Pr of being selected from, Nd, and B, Ti, the per-cent that Zr, one or more additives among the Li, whole additives account for total mass is 0.01～0.3%.
A kind of method of making the multicomponent alloy coating material, described coating material comprises by Al, Si, Mg, Zn alloy and two kinds of multicomponent alloys that rare earth element is formed at least, the mass percent of each composition of wherein said multicomponent alloy is: Al:45～69%, Si:0.2～3%, the total amount of at least two kinds of rare earth elements: 0.02～0.9%, Mg:0.1～5%, all the other are Zn, with above-mentioned element by melting in smelting furnace after the proportioning, smelting temperature is 750-800 ℃, pass through concise, slagging-off, Jiao Zhu alloy pig at last again through contactless stirring.
The form that wherein Al and Si, Al and described two kinds of rare earth elements RE, Zn and Mg is mixed with master alloy at least respectively adds again founds alloy.
Wherein in fusion process, add and be selected from Pr, Nd, Ti, B, Li, Zr any one or two or more additives, the form that wherein said additive is mixed with master alloy with Al respectively adds again founds alloy.
A kind of high anti-corrosion plated steel material, described high anti-corrosion plated steel material plating multicomponent alloy coating material, described coating material comprises by Al, Si, Mg, Zn alloy and two kinds of multicomponent alloys that rare earth element is formed at least, the mass percent of each composition of wherein said multicomponent alloy is: Al:45～69%, Si:0.2～3%, the total amount of at least two kinds of rare earth elements: 0.02～0.9%, Mg:0.1～5%, surplus is Zn.
Adopt technical scheme of the present invention, compared with prior art, after adding at least two kinds of rare earth elements, owing to overcome influence each other of each element and the negative interaction that is produced, and mass percent by each composition of reasonable configuration, solidity to corrosion is more than 6～7 times of common Zn-coated steel sheet, and particularly the solidity to corrosion of swarf is more outstanding.The zinc-plated floor height of coating surface hardness ratio, frictional coefficient is littler than steel plate galvanized, and it is good to add the man-hour sliding, is difficult for producing slide mark.The coating surface light, anti-blackening.Coating not only strengthens with the matrix metal bonding force, and coating surface does not have knot cancer phenomenon.
Simultaneously, this multicomponent alloy coating material adopts unique prepared, the uniform ingredients segregation-free, remelting or remelting still can keep this effect after placing for a long time, and end slag growing amount is few, high solidity to corrosion and excellent fatigue resistance energy are arranged, strong with the matrix metal bonding force, can be widely used in household electrical appliances, building materials, automobile industry.
Embodiment
The multicomponent alloy coating material of high anti-corrosion plated steel material of the present invention comprises by Al, Si, Mg, Zn alloy and two kinds of multicomponent alloys that rare earth element is formed at least, some preferred specific embodiments of composition mass percent among the present invention have been listed in the table 1, but the content of each composition of the present invention is not limited to numerical value listed in the table 1, to those skilled in the art, can on the basis of the listed numerical range of table 1, rationally summarize and derive fully
Table 1: each composition accounts for the quality percentage composition of gross weight; Unit (%)
| Al | Zn | Si | Mg | The total amount of at least two kinds of rare earth elements | Additive | Trace additives (total amount) |
| 45 | Surplus | 0.2 | 0.1 | 0.02, wherein Ce0.01, La0.01 | 0.01 | 0.01 |
| 51 | Surplus | 0.7 | 0.5 | 0.05, wherein Ce0.02, La0.03 | 0.10 | 0.03 |
| 57 | Surplus | 1.2 | 1.0 | 0.1, wherein Ce0.04, La0.045, surplus is other rare earth elements | 0.20 | 0.1 |
| 63 | Surplus | 1.7 | 2.0 | 0.5, wherein Ce0.2, La0.25, surplus is other rare earth elements | 0.25 | 0.45 |
| 69 | Surplus | 3 | 5 | 0.9, wherein Ce0.4, La0.45, surplus is other rare earth elements | 0.30 | 0.49 |
As can be seen from Table 1: the mass percent of each composition optimum of multicomponent alloy of the present invention is: Al:45～69%, and Si:0.2～3%, the total amount of at least two kinds of rare earth elements: 0.02～0.9%, Mg:0.1～5%, surplus is Zn.
Preferably, wherein described at least two kinds of rare earth elements comprise Ce and La.
Wherein the total content of Ce and the La per-cent that accounts for described rare earth element total mass satisfies Ce+La 〉=85%.
Wherein said coating material also comprises trace additives, and described trace additives is Fe, Pb, and Mn, Ca, Cu, one or more among the Sb, and the total content of described trace additives is below 0.5%.
The concrete content of wherein said each composition of trace additives is respectively Fe＜0.3%, Pb＜0.1%, Mn＜0.1%, Ca＜0.1%, Cu＜0.1%, Sb＜0.1%.
Wherein said coating material also comprises at least a Pr of being selected from, Nd, and B, Ti, the per-cent that Zr, one or more additives among the Li, whole additives account for total mass is 0.01～0.3%.
A kind of method of making the multicomponent alloy coating material, described coating material comprises by Al, Si, Mg, Zn alloy and two kinds of multicomponent alloys that rare earth element is formed at least, the mass percent of each composition of wherein said multicomponent alloy is: Al:45～69%, Si:0.2～3%, the total amount of at least two kinds of rare earth elements: 0.02～0.9%, Mg:0.1～5%, all the other are the Zn alloy, with above-mentioned element by melting in smelting furnace after the proportioning, smelting temperature is 750-800 ℃, pass through concise, slagging-off, Jiao Zhu alloy pig at last again through contactless stirring.
The form that wherein Al and Si, Al and described two kinds of rare earth elements RE, Zn and Mg is mixed with master alloy at least respectively adds again founds alloy.
Wherein in fusion process, add and be selected from Pr, Nd, Ti, B, Li, Zr any one or two or more additives, the form that wherein said additive is mixed with master alloy with Al respectively adds again founds alloy.
It is concise to use scouring agent to carry out at last, uses rare gas element simultaneously, and refining finishes to check the metal air content, and qualified back button slag is cast into ingot, pours into 1400 * 580 * 475mm ingot casting at last, or 680 * 90 * 60mm ingot casting.
Simultaneously, the invention also discloses a kind of high anti-corrosion plated steel material, described high anti-corrosion plated steel material plating multicomponent alloy coating material, described coating material comprises by Al, Si, Mg, Zn alloy and two kinds of multicomponent alloys that rare earth element is formed at least, the mass percent of each composition of wherein said multicomponent alloy is: Al:45～69%, Si:0.2～3%, the total amount of at least two kinds of rare earth elements: 0.02～0.9%, Mg:0.1～5%, surplus are Zn.
Adopt technical scheme of the present invention, compared with prior art, after adding two kinds of rare earth elements, owing to overcome the impact each other of each element and the negative interaction that produces, mass percent by rational each composition of configuration, possessed obvious technique effect, simultaneously, this multicomponent alloy coating material adopts the Particular craft preparation, uniform ingredients segregation-free, remelting or remelting still can keep this effect after placing for a long time, and end slag growing amount is few, finished product high corrosion-resistant plated steel material has high corrosion resistance and excellent fatigue resistance energy, can be widely used in household electrical appliances, building materials, automobile industry.
Claims (10)
1. multicomponent alloy coating material, described coating material comprises by Al, Si, Mg, Zn and two kinds of multicomponent alloys that rare earth element is formed at least, the mass percent of each composition of wherein said multicomponent alloy is: Al:45～69%, Si:0.2～3%, the total amount of at least two kinds of rare earth elements: 0.02～0.9%, Mg:0.1～5%, Zn are surplus.
2. multicomponent alloy coating material as claimed in claim 1, wherein said at least two kinds of rare earth elements comprise Ce and La.
3. multicomponent alloy coating material as claimed in claim 2, wherein the total content of Ce and the La per-cent that accounts for described rare earth element total mass satisfies Ce+La 〉=85%.
4. multicomponent alloy coating material as claimed in claim 1, wherein said coating material also comprises trace additives, and described trace additives is Fe, Pb, Mn, Ca, Cu, one or more among the Sb, and the total content of described trace additives is below 0.5%.
5. multicomponent alloy coating material as claimed in claim 4, the concrete content of wherein said each composition of trace additives is respectively Fe＜0.3%, Pb＜0.1%, Mn＜0.1%, Ca＜0.1%, Cu＜0.1%, Sb＜0.1%.
6. multicomponent alloy coating material as claimed in claim 1, wherein said coating material also comprises at least a Pr of being selected from, Nd, B, Ti, the per-cent that Zr, one or more additives among the Li, whole additives account for total mass is 0.01～0.3%.
7. method of making the multicomponent alloy coating material, described coating material comprises by Al, Si, Mg, Zn alloy and two kinds of multicomponent alloys that rare earth element is formed at least, the mass percent of each composition of wherein said multicomponent alloy is: Al:45～69%, Si:0.2～3%, the total amount of at least two kinds of rare earth elements: 0.02～0.9%, Mg:0.1～5%, surplus is Zn, with above-mentioned element by melting in smelting furnace after the proportioning, smelting temperature is 750-800 ℃, pass through concise, slagging-off, Jiao Zhu alloy pig at last again through contactless stirring.
8. method as claimed in claim 7, the form that wherein Al and Si, Al and described two kinds of rare earth elements RE, Zn and Mg is mixed with master alloy at least respectively adds again founds alloy.
9. method as claimed in claim 7 wherein in fusion process, adds and is selected from Pr, Nd, Ti, B, Li, Zr any one or two or more additives, and the form that wherein said additive is mixed with master alloy with Al respectively adds again founds alloy.
10. high anti-corrosion plated steel material, it is characterized in that described high anti-corrosion plated steel material plating multicomponent alloy coating material, described coating material comprises by Al, Si, Mg, Zn alloy and two kinds of multicomponent alloys that rare earth element is formed at least, the mass percent of each composition of wherein said multicomponent alloy is: Al:45～69%, Si:0.2～3%, the total amount of at least two kinds of rare earth elements: 0.02～0.9%, Mg:0.1～5%, surplus is Zn.
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| CN101736252B (en) * | 2009-12-28 | 2011-06-01 | 江苏麟龙新材料股份有限公司 | Aluminum-silicon-zinc-rare earth-magnesium-ferrum-copper-manganese-zirconium-containing hot dip coating alloy and method for preparing same |
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