CN104818445A - Silicon-containing Galfan galvanized alloy - Google Patents
Silicon-containing Galfan galvanized alloy Download PDFInfo
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- CN104818445A CN104818445A CN201510095490.2A CN201510095490A CN104818445A CN 104818445 A CN104818445 A CN 104818445A CN 201510095490 A CN201510095490 A CN 201510095490A CN 104818445 A CN104818445 A CN 104818445A
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Abstract
The present invention relates to a steel plate hot-dipping galvanized alloy, particularly to a Galfan galvanized alloy added with a silicon element. The alloy is characterized by comprising, by weight, 4-6% of aluminum, 0.01-0.5% of lanthanum cerium mixed rare earth, 0.01-0.5% of silicon, less than or equal to 0.5% of inevitable impurities, and the balance of zinc. According to the present invention, the synergy effect between the silicon element and the rare earth element is utilized so as to effectively improve the corrosion resistance of the Galfan alloy.
Description
Technical field
The present invention relates to a kind of steel plate hot dip galvanized zinc alloy, particularly a kind of Galfan galvanized alloy adding element silicon.
Background technology
Galvanizing is widely used in the protection of steel and iron member as a kind of effective steel surface protection process quilt; Galvanizing is dipped in liquid Zn by the iron and steel of surface after cleaning, activation, generated the process of iron zinc intermetallic compounds layer at steel surface by the Reaction-diffusion terms between iron zinc, the pure zinc coating of hot dip process comprises intermetallic compounds layer and free zinc layers, it generates protective oxide film in atmosphere, isolate the contact of ferrous materials and corrosive environment, and utilize the characteristic that zinc is protected the sacrificing positive pole of iron and steel, ferrous materials is played a protective role, but the hot dip process pure zinc coating durability period is short, alloying elements must be added to improve the coating durability period; Hot dip aluminum plating the durability period long; but galvanic protection ability; therefore zinc aluminum alloy coating has then taken into account the galvanic protection of zinc and the durable protective of aluminium; the more single zinc of coating performance or aluminium coat superior; in order to improve solidity to corrosion and the quality product of coated article, some other alloying element usually also can be added.
Galfan alloy is the coating alloy that 20 Centre De Recherches Metallurgiques of century 70 Belgium develop under the support of the plumbous zinc tissue in the world, its composition is Zn-5%Al-(La+Ce) (massfraction), after rare earth element adds, not only can effectively improve coating surface gloss, improve corrosion resistance coating and machining property, increase the service life, all right thinning thickness of coating, obviously reduces the temperature of hot galvanizing liquid; In addition, the mobility that the adding of rare earth can increase plating solution and purification steel substrate surface, thus improve the wetting property of plating solution and the sticking power of coating, improve plating leakage phenomenon, rare earth can also make coating microstructure evenly, crystal grain thinning, tiny eutectic structure can stop the expansion of crackle, thus reduces coating fragility, and Galfan alloy is applicable to the alternative coating of wire galvanization with features such as its low melting point, good solidity to corrosions.
Galfan coated article usually can bend in actual applications, tie a knot, the craze of coating caused thus can have a strong impact on the solidity to corrosion of coating, thus affecting the work-ing life of product, the alloy layer of suitable thinning matrix and peripheral solidified structure centre, can reduce the tearing tendency of coating; At present, also rarely have the report adding element silicon, for this reason, utilize the synergy between element silicon and rare earth element in Galfan galvanized alloy, the erosion resistance effectively improving Galfan alloy becomes the pursuit of galvanizer author.
Summary of the invention
The object of the invention is, a kind of siliceous hot dip process Galfan alloy is provided, utilizes the synergy between element silicon and rare earth element, effectively improve Galfan alloy erosion resistance.
The technical scheme that the present invention realizes its object is:
Add a Galfan alloy for silicon, its innovative point is: its component according to weight percent meter at last:
Aluminium: 4 ~ 6;
Mixed rare earth of lanthanum and cerium: 0.01 ~ 0.5;
Silicon: 0.01 ~ 0.5;
Inevitable impurity :≤0.5;
Zinc: surplus.
The typical technical scheme of one of the present invention is:
Add a Galfan alloy for silicon, the weight percentage of each component is (%):
Aluminium: 4.5 ~ 5.5;
Mixed rare earth of lanthanum and cerium: 0.03 ~ 0.06;
Silicon: 0.03 ~ 0.06;
Inevitable impurity :≤0.5;
Zinc: surplus.
Siliceous Galfan alloy of the present invention is in block, and its lumpiness is within the scope of 50 ~ 100mm; Or in bar-shaped, diameter is within the scope of 30 ~ 50mm, and length is within the scope of 80 ~ 120mm.
Inevitable impurity of the present invention is in its process prepared, and some metals that can not thoroughly remove or nonmetallic impurity element, mainly comprise sulphur, phosphorus, iron, chromium, copper, cadmium and lead.
After technique scheme is implemented, the siliceous Galfan alloy that silicone content is up to 0.5% can be obtained, thus achieve object of the present invention.
Accompanying drawing explanation
Table 1 be siliceous Galfan alloy of the present invention and common Galfan alloy in 5% sodium chloride solution salt-fog test, 480 hours gained related datas, the mean value that fetches data as repeating experiment three times; Calculate erosion rate as follows.
In formula, v: unit surface erosion rate, unit is g/m
2h.
W
1: quality before style corrosion, unit is g.
W
2: remove the quality after corrosion product after style corrosion, g.
S: patterned surface amasss, m
2.
T: salt air corrosion time, h.
Fig. 1 is the comparison between corrosion figure made by calculating gained erosion rate.
Experiment proves, under 5% NaCl salt spray environment, Galfan alloy solidity to corrosion containing Trace Silicon element is better than the solidity to corrosion of common Galfan alloy, table 1 and Fig. 1 display, the average corrosion rate that the described siliceous Galfan alloy in four kinds of embodiments is corroded 480 hours is erosion rate 0.0220 g/m being all significantly less than common Galfan
2h
-1.
Embodiment
One of embodiment: a kind of siliceous Galfan alloy, the weight percentage of its component and each component is (%): aluminium 5, mishmetal (lanthanum and cerium) 0.03, silicon 0.03, summation≤0.5 such as inevitable sulfur impurity, phosphorus, iron, chromium, copper, cadmium and lead, surplus is zinc; Its product is block, lumpiness 80mm.
Embodiment two: a kind of siliceous Galfan alloy, the weight percentage of its component and each component is (%): aluminium 5, mishmetal (lanthanum and cerium) 0.03, silicon 0.045, summation≤0.5 such as inevitable sulfur impurity, phosphorus, iron, chromium, copper, cadmium and lead, surplus is zinc; Its product is block, lumpiness 50mm.
Embodiment three: a kind of siliceous Galfan alloy, the weight percentage of its component and each component is (%): aluminium 5, mishmetal (lanthanum and cerium) 0.06, silicon 0.045, summation≤0.5 such as inevitable sulfur impurity, phosphorus, iron, chromium, copper, cadmium and lead, surplus is zinc; Its product is bar-shaped, diameter 30mm, length 100mm.
Embodiment four: a kind of siliceous Galfan alloy, the weight percentage of its component and each component is (%): aluminium 5, mishmetal (lanthanum and cerium) 0.06, silicon 0.06, summation≤0.5 such as inevitable sulfur impurity, phosphorus, iron, chromium, copper, cadmium and lead, surplus is zinc; Its product is bar-shaped, diameter 45mm, length 100mm.
Containing the present invention of Trace Silicon Galfan alloy, little lumpiness can be prepared or prepare bar-shaped product.
The concise and to the point description of preparation method of the present invention is:
Melting technology is divided into two steps; The first step is preparation Galfan alloy, and second step adds Al-30Si master alloy to prepare the present invention.
The described the first step prepares Galfan alloy and second step prepares processing method of the present invention, all can adopt common remelting processing method.
Described Galfan alloy, in the present invention, the weight percentage of its component, optimum is aluminium 5%, rare earth 0.06%, and surplus is zinc, to obtain the present invention of fine microstructures, good fluidity; And second step prepares method of the present invention, be according to proportion ingredient required for the present invention, Al-30Si master alloy joined in the Galfan alloy liquid of melting, then stirs fully, element silicon is dissolved fully, avoid element silicon segregation; In order to obtain the siliceous Galfan alloy conforming with component requirements, aluminium in pure zinc and Al-10RE master alloy alloy can be added in fusion process and content of rare earth suitably adjusts in molten bath.
Application of the present invention, not by the restriction that its specification sheets describes.
Claims (5)
1. add a Galfan alloy for silicon, it is characterized in that, its component according to weight percent meter at last:
Aluminium: 4 ~ 6;
Mixed rare earth of lanthanum and cerium: 0.01 ~ 0.5;
Silicon: 0.01 ~ 0.5;
Inevitable impurity :≤0.5;
Zinc: surplus.
2. a kind of Galfan alloy of adding silicon as claimed in claim 1, is characterized in that, its component according to weight percent meter at last:
Aluminium: 4.5 ~ 5.5;
Mixed rare earth of lanthanum and cerium: 0.03 ~ 0.06;
Silicon: 0.03 ~ 0.06;
Inevitable impurity :≤0.5;
Zinc: surplus.
3. a kind of Galfan alloy of adding silicon as claimed in claim 1, is characterized in that, described siliceous Galfan alloy is in block, and its lumpiness is within the scope of 50 ~ 100mm; Or in bar-shaped, diameter is within the scope of 30 ~ 50mm, and length is within the scope of 80 ~ 120mm.
4. a kind of Galfan alloy of adding silicon as claimed in claim 1, it is characterized in that, described inevitable impurity, is in its process prepared, some metals that can not thoroughly remove or nonmetallic impurity element, mainly comprise sulphur, phosphorus, iron, chromium, copper, cadmium and lead.
5. a kind of Galfan alloy of adding silicon as claimed in claim 1, is characterized in that, its component according to weight percent meter at last:
Aluminium: 5;
Mixed rare earth of lanthanum and cerium: 0.06;
Silicon: 0.045;
Inevitable impurity :≤0.5;
Zinc: surplus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510095490.2A CN104818445A (en) | 2015-03-04 | 2015-03-04 | Silicon-containing Galfan galvanized alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510095490.2A CN104818445A (en) | 2015-03-04 | 2015-03-04 | Silicon-containing Galfan galvanized alloy |
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| CN104818445A true CN104818445A (en) | 2015-08-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410237A (en) * | 2018-03-28 | 2018-08-17 | 上海志育新材料科技有限公司 | A kind of the Galfan alloys anticorrosive additive and anti-decaying paint of addition graphene |
| CN112281098A (en) * | 2020-09-28 | 2021-01-29 | 江苏华辉新材料科技有限公司 | Aluminum-zinc-silicon-lanthanum-cerium alloy ingot for continuous hot dip plating and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010077480A (en) * | 2008-09-25 | 2010-04-08 | Nippon Steel Corp | Hot-dip zincing steel sheet, and method for manufacturing the same |
| CN102994929A (en) * | 2012-12-21 | 2013-03-27 | 常州大学 | Zinc-aluminum-silicon-rare earth alloy for hot-dip plating steel tube and preparation method thereof |
-
2015
- 2015-03-04 CN CN201510095490.2A patent/CN104818445A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010077480A (en) * | 2008-09-25 | 2010-04-08 | Nippon Steel Corp | Hot-dip zincing steel sheet, and method for manufacturing the same |
| CN102994929A (en) * | 2012-12-21 | 2013-03-27 | 常州大学 | Zinc-aluminum-silicon-rare earth alloy for hot-dip plating steel tube and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李世伟: "Zn-Al-Mg-Si-RE合金热浸镀工艺及其腐蚀机理的研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑（月刊）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410237A (en) * | 2018-03-28 | 2018-08-17 | 上海志育新材料科技有限公司 | A kind of the Galfan alloys anticorrosive additive and anti-decaying paint of addition graphene |
| CN112281098A (en) * | 2020-09-28 | 2021-01-29 | 江苏华辉新材料科技有限公司 | Aluminum-zinc-silicon-lanthanum-cerium alloy ingot for continuous hot dip plating and manufacturing method thereof |
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