CN106480338A - For adjusting zinc-aluminium magnesium alloy and its direct melting method of hot dipping solution composition - Google Patents
For adjusting zinc-aluminium magnesium alloy and its direct melting method of hot dipping solution composition Download PDFInfo
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- CN106480338A CN106480338A CN201510549125.4A CN201510549125A CN106480338A CN 106480338 A CN106480338 A CN 106480338A CN 201510549125 A CN201510549125 A CN 201510549125A CN 106480338 A CN106480338 A CN 106480338A
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Abstract
The invention discloses a kind of zinc-aluminium magnesium alloy for adjusting hot dipping solution composition and its direct melting method, the chemical composition of zinc-aluminium magnesium alloy is：Al4.4%～5.8%, Mg4.4%～5.8%, Fe<0.015%, Pb<0.008%, Cd<0.010%, Cu<0.008%, Sn<0.008%, balance of zinc.After fusing zinc ingot metal, zinc liquid is heated to 640～680 DEG C, add aluminium ingot, after aluminium ingot all melts, be cooled to 590～610 DEG C, according to theoretical content of magnesium proportioning 1.05 times, magnesium ingot is added with press mode, after magnesium ingot all dissolves, after stirring 11～15min, is cooled to 490～520 DEG C, after standing 10～15min, remove surface scum, subsequent ingot casting, the quality of ingot is 15～35kg.
Description
Technical field
The invention belongs to nonferrous materials field, it is used for adjusting hot dipping plating solution particularly to one kind
The zinc-aluminium magnesium alloy of composition and its direct melting method.
Background technology
Adopting intermediate alloy melting technique hot-dip galvanized alloy more：CN200810143660.X is open
" a kind of Zinc-aluminum binary intermediate alloy and its application in hot-dip galvanized alloy ",
560～680 DEG C fusing preparation aluminium content be 16%～24%, the intermediate alloy of balance of zinc, then
Prepare hot-dip galvanized alloy then at 480～520 DEG C；This invention can be used for preparing Zinc-aluminum binary galvanizing
Alloy, aluminium content generally 0.2%～1.0%.
CN200810143888.9 disclose " a kind of zinc-Al-RE intermediate alloys and its
Hot-dip galvanized alloy produce in application ", 550～650 DEG C fusing preparation aluminium contents be 3%～5%,
RE content is 6%～10%, the intermediate alloy of balance of zinc, then makes then at 470～480 DEG C
Standby hot-dip galvanized alloy；This invention can be used for preparing zinc-aluminum-RE ternary hot-dip galvanized alloy.
CN200910259545.5 discloses " method for smelting hot-dip galvanized alloy ", first 600～660
DEG C prepare antimony content be 15%～25%, the intermediate alloy of balance of zinc, then at 500～540 DEG C
Prepare hot-dip galvanized alloy；This invention can be used for preparing zinc-antimony alloy, and antimony amount is generally 0.2%.
The above-mentioned technology preparing hot-dip galvanized alloy using intermediate alloy, it is possible to decrease the temperature of molten alloy
Degree, shortens the time of melting and stirring, makes hot-dip galvanized alloy composition uniform.But in strip heat
During zinc immersion aluminum magnesium ternary alloy, not only need zinc-aluminum-magnesium ternary hot-dip galvanized alloy, also need
Can be with the zinc-aluminium magnesium alloy of on-line tuning hot dipping solution composition.
Content of the invention
It is an object of the invention to provide a kind of zinc-aluminum-magnesium for adjusting hot dipping solution composition closes
Gold and its direct melting method.
In the present invention, the chemical composition of the zinc-aluminium magnesium alloy for adjusting hot dipping solution composition is：
Al 4.4%～5.8%, Mg 4.4%～5.8%, Fe<0.015%, Pb<0.008%, Cd<0.010%,
Cu<0.008%, Sn<0.008%, balance of zinc.
For adjusting the manufacturing technology of the zinc-aluminium magnesium alloy of hot dipping solution composition, after fusing zinc ingot metal
Zinc liquid is heated to 640～680 DEG C, adds aluminium ingot according to proportioning, after aluminium ingot all melts,
It is cooled to 590～610 DEG C, according to 1.05 times of theoretical content of magnesium proportioning, added with press mode
Magnesium ingot, after magnesium ingot all dissolves, 11～15mim is cooled to 490～520 DEG C after being sufficiently stirred for,
After standing 10～15min, remove surface scum, subsequent ingot casting, the quality of ingot is 15～35kg.
In the present invention, limit zinc-aluminium magnesium alloy chemical composition the reasons why as follows：
When aluminum, content of magnesium are less than 4.4%, in adjustment plating solution, aluminium content needs substantial amounts of kirsite,
Not only regulate the speed slow, and easily cause zinc alloy bath temperature fluctuation；Aluminum, content of magnesium are higher than
5.8%, the fusing point of alloy is higher, and density is little, and dissolution velocity is slow in the plating solution, and kirsite floats on
The easy scaling loss in plating solution surface.Therefore, Al content in the present invention and Mg content are controlled respectively
Between 4.4%～5.8%.
Iron content is higher than 0.015%, adds the cadmia producing during kirsite to increase, affects coating
Surface quality.Therefore, Fe content in the present invention is controlled<0.015%.
Lead, copper, Theil indices are high, and it is thick to easily cause coating microstructure, and corrosion resistance of coating and hardness are not
Foot is it is therefore desirable to be limited in<0.008%.
Cadmium is harmful element, and its content needs to be limited in<0.010%.
It is used in the present invention adjusting the manufacturing technology explanation of the zinc-aluminium magnesium alloy of hot dipping solution composition
As follows：
When adding aluminium ingot, zinc liquid temperature is less than 640 DEG C, aluminum dissolution velocity is low；Temperature is higher than 680
DEG C when, energy consumption is higher, and equipment loss is big.When adding magnesium ingot, zinc liquid temperature is less than 590 DEG C
When, magnesium dissolution velocity is low；When temperature is higher than 610 DEG C, magnesium not only easy scaling loss, and inflammable simultaneously
Cause security incident.Therefore zinc liquid is heated to 640～680 DEG C of addition aluminium ingots.
When adding magnesium ingot, zinc liquid temperature is less than 590 DEG C, magnesium dissolution velocity is low；Temperature is high
When 610 DEG C, magnesium not only easy scaling loss, and also inflammable and cause security incident, therefore zinc is closed
Golden liquid is cooled to 590～610 DEG C of addition magnesium ingots.
Plus magnesium ingot does not adopt press mode, magnesium loses in zinc liquid surface easy firing, the burning of magnesium
Damage amount is difficult to grasp.
When the proportioning of magnesium is less than 1.05 times of theoretical content of magnesium, the content of magnesium of ZINC ALLOY is easily inclined
Low；When the proportioning of magnesium is higher than 1.05 times of theoretical content of magnesium, the content of magnesium of ZINC ALLOY is easily inclined
High.Therefore will be according to 1.05 times of addition magnesium ingots of theoretical content of magnesium proportioning.
When during slagging-off, temperature is less than 490 DEG C, compound between easy precipitating metal in zinc liquid, easily
It is mixed into cadmia；When during slagging-off, temperature is higher than 520 DEG C, the iron solubility in zinc liquid is high, no
Easily separate out and be removed.When time of repose is less than 10min, in zinc liquid, impurity is difficult to float, zinc
In alloy pig, impurity is more；When time of repose is higher than 15min, in zinc liquid, easy aluminum, magnesium float,
ZINC ALLOY uneven components.Therefore it is required that zinc liquid is cooled to 490～520 DEG C, standing
After 10～15min, remove surface scum.
When the quality of ZINC ALLOY is less than 15kg, the surface area band of ingot, bring into floating in plating solution
Slag is many；When the quality of ingot is excessive, dissolution velocity is slow, and the adjustment plating solution time is long.Therefore ingot casting
Quality is 15～35kg.
The present invention can obtain following beneficial effect：
Have the characteristics that composition is uniform, impurity content is few, process is simple, fast velocity modulation can be met
The demand of whole zinc-aluminum-magnesium ternary alloy plating solution composition.
Specific embodiment
In the present invention, the chemical composition of the zinc-aluminium magnesium alloy for adjusting hot dipping solution composition is：
Al 4.4%～5.8%, Mg 4.4%～5.8%, Fe<0.015%, Pb<0.008%, Cd<0.010%,
Cu<0.008%, Sn<0.008%, balance of zinc.
For adjusting the manufacturing technology of the zinc-aluminium magnesium alloy of hot dipping solution composition, after fusing zinc ingot metal
Zinc liquid is heated to 640～680 DEG C, adds aluminium ingot according to proportioning, after aluminium ingot all melts,
It is cooled to 590～610 DEG C, according to 1.05 times of theoretical content of magnesium proportioning, added with press mode
Magnesium ingot, after magnesium ingot all dissolves, is cooled to 490～520 DEG C, standing after being sufficiently stirred for
After 10～15min, remove surface scum, subsequent ingot casting, the quality of ingot is 15～35kg.
Following examples are used for illustrating present invention, embody the effect obtaining.These are real
Apply the general description that example is only present invention, present invention is not limited.Table 1
For the chemical composition of zinc-aluminium magnesium alloy ingot in the present invention, table 2 is the smelter of zinc-aluminium magnesium alloy
Skill.From zinc-aluminium magnesium alloy ingot, diverse location takes 10 samples to be detected, result such as table 3
Shown, the meansigma methodss of element measurement result, σ (Me) table measured by wherein Av (Me) expression
Show the standard deviation of measured element measurement result.
The chemical composition of table 1 zinc-aluminium magnesium alloy ingot
| Embodiment | Al/% | Mg/% |
| 1 | 4.4 | 4.4 |
| 2 | 4.5 | 4.5 |
| 3 | 4.8 | 4.8 |
| 4 | 5.2 | 5.2 |
| 5 | 5.6 | 5.6 |
| 6 | 5.7 | 5.7 |
| 7 | 5.8 | 5.8 |
The smelting technology of table 2 zinc-aluminium magnesium alloy
| Embodiment | Plus aluminum temperature/DEG C | Plus magnesium temperature/DEG C | Slagging-off temperature/DEG C | Mixing time/min | Time of repose/min |
| 1 | 640 | 590 | 490 | 15 | 15 |
| 2 | 645 | 595 | 495 | 14 | 14 |
| 3 | 650 | 595 | 500 | 13 | 13 |
| 4 | 660 | 600 | 510 | 12 | 14 |
| 5 | 670 | 605 | 510 | 11 | 13 |
| 6 | 675 | 605 | 515 | 12 | 11 |
| 7 | 680 | 610 | 520 | 11 | 11 |
Table 3 zinc-aluminium magnesium alloy ingot composition detection result
According to zinc-aluminium magnesium alloy ingot composition detection result, the standard deviation of Al element measurement result
Below 0.08, below 0.05, impurity content is equal for the standard deviation of Mg element measurement result
Meet and require.Additionally, by the zinc-aluminium magnesium alloy of above-mentioned technique melting, also there is good outward appearance
Quality (the surface no defect such as zinc gray, cadmia, shrinkage cavity, color even), for strip hot dipping
During plating, there is the features such as dissolving is fast, cadmia is few.
Claims (4)
1. a kind of zinc-aluminium magnesium alloy for adjusting hot dipping solution composition is it is characterised in that zinc
The chemical composition of almag is by weight percentage：Al 4.4%～5.8%, Mg
4.4%～5.8%, Fe<0.015%, Pb<0.008%, Cd<0.010%, Cu<0.008%,
Sn<0.008%, balance of zinc.
2. a kind of zinc-aluminum-magnesium being used for adjusting hot dipping solution composition as claimed in claim 1 closes
The direct melting method of gold, include fusing zinc ingot metal, add after Heating Zn liquid aluminium ingot, addition magnesium ingot,
Stirring, standing, removing dross, ingot casting are it is characterised in that be heated to zinc liquid after fusing zinc ingot metal
640～680 DEG C, add aluminium ingot, after aluminium ingot all melts, be cooled to 590～610 DEG C, press
According to reason discuss content of magnesium proportioning 1.05 times, add magnesium ingot with press mode, treat that magnesium ingot is all molten
Xie Hou, is cooled to 490～520 DEG C after being sufficiently stirred for, after standing 10～15min, remove surface
Scum silica frost, subsequently casts zinc-aluminium magnesium alloy ingot.
3. it is used for as claimed in claim 2 adjusting the zinc-aluminium magnesium alloy of hot dipping solution composition
Direct melting method is it is characterised in that described mixing time is 11～15min.
4. it is used for as claimed in claim 2 adjusting the zinc-aluminium magnesium alloy of hot dipping solution composition
Direct melting method is it is characterised in that the quality of described zinc-aluminium magnesium alloy ingot is 15～35kg.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763030A (en) * | 2019-03-14 | 2019-05-17 | 常州大学 | A kind of zinc-aluminum-magnesium intermediate alloy and its method supplementing magnesium elements loss in zinc pond |
| CN111455217A (en) * | 2020-05-29 | 2020-07-28 | 云南驰宏资源综合利用有限公司 | Method for producing zinc-magnesium-aluminum alloy in laboratory |
| CN111500881A (en) * | 2020-05-29 | 2020-08-07 | 云南驰宏资源综合利用有限公司 | Method for smelting high-magnesium zinc-based alloy |
| CN115491544A (en) * | 2022-09-15 | 2022-12-20 | 首钢集团有限公司 | Zinc-aluminum-magnesium coating and zinc-aluminum-magnesium coating steel plate |
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| JP2002371345A (en) * | 2001-06-13 | 2002-12-26 | Sumitomo Metal Ind Ltd | METHOD FOR MANUFACTURING HOT-DIP Zn-Al-Mg ALLOY PLATED STEEL SHEET |
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| CN103924123A (en) * | 2014-02-17 | 2014-07-16 | 陕西理工学院 | Low-Al hot-dipped Zn-Al-Mg-Si alloy and its preparation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763030A (en) * | 2019-03-14 | 2019-05-17 | 常州大学 | A kind of zinc-aluminum-magnesium intermediate alloy and its method supplementing magnesium elements loss in zinc pond |
| CN111455217A (en) * | 2020-05-29 | 2020-07-28 | 云南驰宏资源综合利用有限公司 | Method for producing zinc-magnesium-aluminum alloy in laboratory |
| CN111500881A (en) * | 2020-05-29 | 2020-08-07 | 云南驰宏资源综合利用有限公司 | Method for smelting high-magnesium zinc-based alloy |
| CN115491544A (en) * | 2022-09-15 | 2022-12-20 | 首钢集团有限公司 | Zinc-aluminum-magnesium coating and zinc-aluminum-magnesium coating steel plate |
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