CN1069703C - Hot dipping aluminium plating technology for steel - Google Patents
Hot dipping aluminium plating technology for steel Download PDFInfo
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- CN1069703C CN1069703C CN99100655A CN99100655A CN1069703C CN 1069703 C CN1069703 C CN 1069703C CN 99100655 A CN99100655 A CN 99100655A CN 99100655 A CN99100655 A CN 99100655A CN 1069703 C CN1069703 C CN 1069703C
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- hot dipping
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- aluminum
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Abstract
The present invention discloses hot dipping aluminum plating technology for steel, which belongs to the filed of hot-dip aluminum plating by using a solvent method. The hot dipping aluminum plating technology for steel comprises the steps that impurities on the surface of a plating piece are eliminated, and then the plating piece is plated in a hot dipping mode; plating assisting liquid is a settled solution prepared from 30% to 60% of potassium chloride, 15% to 45% of sodium chloride, 10% to 40% of cryolite and 5% to 30% of aluminum fluoride. By using the hot dipping aluminum plating technology for steel, the purity of an aluminum-plated layer can be as high as 99.85%, and technology is simple; the hot dipping aluminum plating technology for steel solves the problem of difficulty of pure aluminum plating and can be used on occasions of pure aluminum coating for steel strips, steel wires, steel pipes, etc.
Description
The present invention relates to a kind of hot dipping aluminium plating technology for steel, belong to solvent method hot dip aluminum plating field.
At present, hot dipping aluminium plating technology is a lot, but can plate fine aluminium do not have several and all complicated.Use more improved Sendzimir method, its steel plating piece must be isolated with protection gas and air, and therefore whole flow process all is airtight, and protection gas must often change, and it is difficult that this just makes that this process implementing gets up, and production cost is very high.It is the alloy layer of base with zinc that Japanese Patent J04323356 discloses a kind of, and Korean Patent KR8900679B discloses a kind of technology of alloy plating, and the two all is not the plating fine aluminium.
The object of the present invention is to provide a kind of flow process simple, implement easily, cost is lower, can plate fine aluminium and do not have the hot dipping aluminium plating technology for steel of plating leakage.
The technical solution that the present invention proposes is:
A kind of hot dipping aluminium plating technology for steel comprises
(1) thoroughly removes the impurity such as greasy dirt, rust and carbon black on steel plating piece surface;
(2) with the steel plating piece by quickening liquid so that quickening liquid is coated on its surface;
(3) oven dry scribbles the steel plating piece of quickening liquid;
(4) the steel plating piece is entered the groove of aluminizing that fills fine aluminium liquid and carry out hot dip process;
(5) polishing;
(6) wax;
Quickening liquid is the settled solution of being made by the aluminum fluoride of 30～60% Repone K, 15～45% sodium-chlor, 10～40% sodium aluminum fluoride and 5～30%, at first these four kinds of materials are melted under 750～850 ℃ of high temperature, then with this fused solution air cooling at normal temperatures, again cooled mixture solid is ground into powder, this powder is put into container to be added to heat after entry stirs and dissolves, clarification then, the clear liquor above taking out is quickening liquid.
Described bake out temperature is 70～200 ℃.
Described hot dip aluminum plating liquid temp is 700～720 ℃, and the hot dip process time is 10～20 seconds.
Below the technology of the present invention is described in further detail: the present invention adopts solvent method to the thermal dip plating of steel fine aluminium, has overcome technology prejudice.Before this, domestic, international brainstrust has all been negated a solvent method, thinks that this method of use can not plate fine aluminium, and the present invention uses the plating assistant agent of producing with special methods, realized solvent method plating fine aluminium, and aluminium coat purity reaches 99.85%.And the present invention uses special tectum, can prevent the aluminium liquid oxidation, realize the insulation of aluminium liquid, plating piece is slowly lowered the temperature and prevents plating piece surfaces of aluminum knurl.
The present invention has following advantage than prior art: (1) in industrial easy enforcement, production cost is low; (2) technical process is simple; (3) aluminium coat purity is up to 99.85%; (4) tensile strength, elongation at break and the solidity to corrosion of the steel behind this method plating fine aluminium are all better.
The present invention will be described below in conjunction with embodiment:
A kind of steel band hot dipping aluminium plating technology comprises
(1) thoroughly removes the impurity such as greasy dirt, rust and carbon black of steel strip surface; Promptly earlier with steel band by oxidized still, surface and oil contaminant is all burnt, remove the active iron oxide compound of staying steel strip surface with aqueous hydrochloric acid then, and then remove materials such as carbon black film on the steel strip substrate with the mechanical friction method.
(2) with steel band by quickening liquid so that quickening liquid is coated on its surface; Quickening liquid is the settled solution of being made by the aluminum fluoride of 31% Repone K, 35% sodium-chlor, 20% sodium aluminum fluoride and 14%; Or the settled solution of making by the aluminum fluoride of 48% Repone K, 30% sodium-chlor, 15% sodium aluminum fluoride and 7%; Or the settled solution of making by the aluminum fluoride of 59% Repone K, 15% sodium-chlor, 11% sodium aluminum fluoride and 15%; The preparation method of settled solution is, at first these four kinds of materials are melted under 750～850 ℃ temperature, then with this fused solution air cooling at normal temperatures, again cooled mixture solid is ground into powder, this powder is put into container to be added to heat after entry stirs and dissolves, clarification then, the clear liquor above taking out is quickening liquid;
(3) oven dry scribbles the steel band of quickening liquid, and bake out temperature is 90～110 ℃;
(4) steel band is entered the groove of aluminizing that fills fine aluminium liquid and carry out hot dip process, be coated with the closely knit stiff mud ball layer that adds the about 5mm of diameter that sodium silicate solution makes and dried by colliery powder, diatomite in powder on the fine aluminium liquid liquid level; The hot dip aluminum plating liquid temp is 700～720 ℃, and the hot dip process time is 15～20 seconds.
(5) after coating forms, processing such as polish, painted;
(6) after polished finish, coat liquid wax in steel strip surface, the oxide film on aluminium lamination surface combines with liquid wax, generates smooth strong surface, and product is not only attractive in appearance anti-corrosion, and can also alleviate frictionally damage or scuffing in the use.
Claims (3)
1, a kind of hot dipping aluminium plating technology for steel comprises
(1) thoroughly removes the impurity such as greasy dirt, rust and carbon black on steel plating piece surface;
(2) with the steel plating piece by quickening liquid so that quickening liquid is coated on its surface;
(3) oven dry scribbles the steel plating piece of quickening liquid;
(4) the steel plating piece is entered the groove of aluminizing that fills fine aluminium liquid and carry out hot dip process;
(5) polishing;
(6) wax;
It is characterized in that this quickening liquid is the settled solution of being made by the aluminum fluoride of 30～60% Repone K, 15～45% sodium-chlor, 10～40% sodium aluminum fluoride and 5～30%, at first these four kinds of materials are melted under 750～850 ℃ of high temperature, then with this fused solution air cooling at normal temperatures, again cooled mixture solid is ground into powder, this powder is put into container to be added to heat after entry stirs and dissolves, clarification then, the clear liquor above taking out is quickening liquid.
2, hot dipping aluminium plating technology for steel according to claim 1 is characterized in that described bake out temperature is 70～200 ℃.
3, hot dipping aluminium plating technology for steel according to claim 1 is characterized in that described hot dip aluminum plating liquid temp is 700～720 ℃, and the hot dip process time is 10～20 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99100655A CN1069703C (en) | 1999-02-11 | 1999-02-11 | Hot dipping aluminium plating technology for steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99100655A CN1069703C (en) | 1999-02-11 | 1999-02-11 | Hot dipping aluminium plating technology for steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1227272A CN1227272A (en) | 1999-09-01 |
| CN1069703C true CN1069703C (en) | 2001-08-15 |
Family
ID=5270128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99100655A Expired - Fee Related CN1069703C (en) | 1999-02-11 | 1999-02-11 | Hot dipping aluminium plating technology for steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1069703C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101812655A (en) * | 2010-04-23 | 2010-08-25 | 哈尔滨工程大学 | 0Cr17Ni14Mo2 hot dip rare earth aluminum alloy coating technology |
| JP6893989B2 (en) | 2016-12-21 | 2021-06-23 | ポスコＰｏｓｃｏ | High manganese molten aluminum plated steel sheet with excellent sacrificial corrosion resistance and plating properties and its manufacturing method |
| CN107365954A (en) * | 2017-06-09 | 2017-11-21 | 中国石油大学胜利学院 | A kind of hot dipping aluminium plating technology of hot-dip aluminizing fluxing agent and steel construction piece |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR890000679B1 (en) * | 1984-01-06 | 1989-03-24 | 이호년 | Method of aluminum got dip coating |
| CN1052336A (en) * | 1989-12-05 | 1991-06-19 | 杭州塘栖钢丝绳厂 | Dry/wet method of aluminium-zinc alloy hot plating process |
| CN1056717A (en) * | 1991-07-06 | 1991-12-04 | 天津市自然辩证法研究会科技咨询服务中心 | Polyphase covering agent |
| JPH04323356A (en) * | 1991-04-24 | 1992-11-12 | Nippon Steel Corp | Molten flux composition for hot dip aluminum-zinc alloy plating |
| CN1136087A (en) * | 1995-01-10 | 1996-11-20 | 日本帕卡濑精株式会社 | Process for hot dip-coating steel material with molten aluminum alloy by one-stage coating method using flux and bath of molten aluminum alloy metal |
-
1999
- 1999-02-11 CN CN99100655A patent/CN1069703C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR890000679B1 (en) * | 1984-01-06 | 1989-03-24 | 이호년 | Method of aluminum got dip coating |
| CN1052336A (en) * | 1989-12-05 | 1991-06-19 | 杭州塘栖钢丝绳厂 | Dry/wet method of aluminium-zinc alloy hot plating process |
| JPH04323356A (en) * | 1991-04-24 | 1992-11-12 | Nippon Steel Corp | Molten flux composition for hot dip aluminum-zinc alloy plating |
| CN1056717A (en) * | 1991-07-06 | 1991-12-04 | 天津市自然辩证法研究会科技咨询服务中心 | Polyphase covering agent |
| CN1136087A (en) * | 1995-01-10 | 1996-11-20 | 日本帕卡濑精株式会社 | Process for hot dip-coating steel material with molten aluminum alloy by one-stage coating method using flux and bath of molten aluminum alloy metal |
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| Publication number | Publication date |
|---|---|
| CN1227272A (en) | 1999-09-01 |
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Granted publication date: 20010815 |