CN107022702A - For hot press-formed aluminium base coating material and its smelting process - Google Patents
For hot press-formed aluminium base coating material and its smelting process Download PDFInfo
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- CN107022702A CN107022702A CN201710219354.9A CN201710219354A CN107022702A CN 107022702 A CN107022702 A CN 107022702A CN 201710219354 A CN201710219354 A CN 201710219354A CN 107022702 A CN107022702 A CN 107022702A
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- Prior art keywords
- coating material
- hot press
- base coating
- aluminium base
- smelting process
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/14—Alloys based on aluminium with copper as the next major constituent with silicon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
- Cookers (AREA)
Abstract
It is used for hot press-formed aluminium base coating material and its smelting process the invention discloses a kind of, the mass percentage content of its composition is：Si 1.0~20.0%, Cu 0.5~15.0%, Cr 0.1~2.0%, remaining is Al and inevitable impurity.The present invention is not required to add more expensive alloying component, while hot press-formed steel coating material requirement is met, with cost it is low the characteristics of.The inventive method technique is simple, production cost is low, and gained coating material has the functions such as resistance to high temperature oxidation, high-lubricity, thermal conductivity, and cost is relatively low, and the drop stamping suitable for hot press-formed steel, which connects, to be shaped.
Description
Technical field
The present invention relates to a kind of coating of metal material, it is especially a kind of for hot press-formed aluminium base coating material and
Its smelting process.
Background technology
Hot press-formed steel belongs to super-high strength steel of the tensile strength more than 1500MPa ranks, straight by the way of drop stamping
Connect and shape, be mainly used in automotive high intensity, the production of difficult molded parts.But steel plate work in heating or hot forming
Condition condition is harsh, easily produces iron scale during heating, iron scale easily damages mould to the cold during punching press, while do not fall off
Iron scale is also required to remove using shot-peening, increases cost of equipment maintenance, influences production efficiency.Therefore need to use high temperature resistance oxygen
Change, high-lubricity, heat conduction sexual function are protected in the coating of one to hot forming steel surface.
Chinese patent application 201410156753.1 discloses a kind of hot press-formed steel resistance to high temperature oxidation coating material
And hot dipping ferryman's skill, the coating material is Al-Si-Ni- rare earth materials, with good resistance to high temperature oxidation and corrosive nature；
But the coating material needs to add expensive rare-earth elements of lanthanum（La）Or cerium（Ce）, there is the higher deficiency of cost
Place.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of cost it is low be used for hot press-formed aluminium base coating material；
Present invention also offers a kind of smelting process for hot press-formed aluminium base coating material.
In order to solve the above technical problems, the mass percentage content of present component is：Si 1.0~20.0%, Cu 0.5
~15.0%, Cr 0.1~2.0%, remaining is Al and inevitable impurity.
Total amount≤1% of impurity of the present invention.
The step of the inventive method is：（1）Load weighted raw material is put into smelting furnace, vacuum≤10Pa is evacuated to
After start power transmission heating；
（2）When starting to occur molten metal in smelting furnace, stop vacuumizing, be filled with inert gas to air pressure reach 0.04~
0.07MPa；
（3）After raw material is completely melt, keep molten state 5min and more than；
（4）Finally cast, cast temperature is controlled 50 DEG C~100 DEG C more than liquidus curve.
Step described in the inventive method（3）In, temperature >=700 DEG C during control molten state.
Step described in the inventive method（1）In, raw material is selected from simple metal, alusil alloy, aluminium copper or conjunction in the middle of other
Gold.
Step described in the inventive method（1）In, smelting furnace is using oxidation aluminium material.
Step described in the inventive method（2）In, inert gas is nitrogen or argon gas.
It is using the beneficial effect produced by above-mentioned technical proposal：The present invention is not required to add more expensive alloying component,
While meeting hot press-formed steel coating material requirement, with cost it is low the characteristics of.
The inventive method technique is simple, production cost is low, and gained coating material has resistance to high temperature oxidation, high-lubricity, led
The function such as hot, and cost is relatively low, the drop stamping suitable for hot press-formed steel, which connects, to be shaped.
Embodiment
This smelting process for being used for hot press-formed aluminium base coating material uses following processing steps：（1）Proportionately distribute
Than weighing fine aluminium, pure silicon, fine copper, pure chromium, alusil alloy, aluminium copper or other alloy raw materials.The mass percent of each composition
Content is：Si 1.0~20.0%, Cu 0.5~15.0%, Cr 0.1~2.0%, remaining is Al and inevitable impurity；Impurity
Element total amount is best≤and 1%.Load weighted raw material is put into smelting furnace；The vacuum melting room of smelting furnace is vacuumized, very
Start power transmission heating after reciprocal of duty cycle≤10Pa.The smelting furnace is preferably with oxidation aluminium material.
（2）When starting to occur molten metal in smelting furnace, stop vacuumizing, be filled with inert gas to vacuum melting room, make
Vacuum melting room pressure reaches 0.04~0.07MPa.All inert gases may be selected in the inert gas, but are examined for economy
Consider, nitrogen and argon gas are optimal selection.
（3）Different according to alloy content, fusion temperature is at 580 DEG C~700 DEG C；To ensure that each alloy is completely melt, control
Molten metal temperature >=700 DEG C, and keep 5min and more than；
（4）Finally cast, cast temperature is controlled 50 DEG C~100 DEG C more than liquidus curve；It can obtain after casting described
Aluminium base coating material.
（5）Using this aluminium base coating material as plating solution, using the technique of hot-dip, one is formed on the surface of hot press-formed steel
Layer flash plating, using the intermetallic compound formed between Al, Si, Cr, Cu, Fe, by appropriate heat treatment after coating solidification
With stronger oxidation-resistance property and resistance to high temperature corrosion performance.
With reference to specific embodiment, the present invention is further detailed explanation.
Embodiment 1：This is used for hot press-formed aluminium base coating material and formed using the smelting of following methods.
The equipment of the present embodiment uses vaccum sensitive stove：Final vacuum is 6.67 × 10-2Pa, power is 100KW,
Frequency is 2500Hz, rated capacity 6.8L.The proportioning of used raw material is shown in Table 1.
Table 1：The raw material addition of the present embodiment
Concrete technology：Each raw material is added after smelting furnace, starts power transmission heating when being evacuated to 7Pa；When starting to occur molten metal, stop
Only vacuumize, be filled with nitrogen to 0.06MPa；After alloy all melts, control molten metal temperature keeps 5min to 710 DEG C；
Finally more than liquidus curve 50 DEG C cast.
The mass content of aluminium base coating material chemical composition is obtained by the present embodiment：Si 10.37%、Cu 2.91%、Cr
0.41%, remaining is Al and inevitable impurity.
Embodiment 2：This is used for hot press-formed aluminium base coating material and formed using the smelting of following methods.
The equipment of the present embodiment uses vaccum sensitive stove：Final vacuum is 6.67 × 10-2Pa, power is 100KW,
Frequency is 2500Hz, rated capacity 6.8L.The proportioning of used raw material is shown in Table 2.
Table 2：The raw material addition of the present embodiment
Concrete technology：Each raw material is added after smelting furnace, starts power transmission heating when being evacuated to 9Pa；When starting to occur molten metal, stop
Only vacuumize, be filled with nitrogen to 0.07MPa；After alloy all melts, control molten metal temperature keeps 5min to 716 DEG C；
Finally more than liquidus curve 70 DEG C cast.
The mass content of the chemical composition of aluminium base coating material is obtained by the present embodiment：Si 1.02%、Cu 14.87%、Cr
1.99%, remaining is Al and inevitable impurity.
Embodiment 3：This is used for hot press-formed aluminium base coating material and formed using the smelting of following methods.
The equipment of the present embodiment uses vaccum sensitive stove：Final vacuum is 6.67 × 10-2Pa, power is 100KW,
Frequency is 2500Hz, rated capacity 6.8L.The proportioning of used raw material is shown in Table 3.
Table 3：The raw material addition of the present embodiment
Concrete technology：Each raw material is added after smelting furnace, starts power transmission heating when being evacuated to 10Pa；When starting to occur molten metal,
Stopping is vacuumized, and is filled with argon gas to 0.04MPa；After alloy all melts, control molten metal temperature is kept to 763 DEG C
10min；Finally more than liquidus curve 100 DEG C cast.
The mass content of the chemical composition of aluminium base coating material is obtained by the present embodiment：Si 19.99%、Cu 0.50%、Cr
0.10%, remaining is Al and inevitable impurity.
Embodiment 4：This is used for hot press-formed aluminium base coating material and formed using the smelting of following methods.
The equipment of the present embodiment uses vaccum sensitive stove：Final vacuum is 6.67 × 10-2Pa, power is 100KW,
Frequency is 2500Hz, rated capacity 6.8L.The proportioning of used raw material is shown in Table 4.
Table 4：The raw material addition of the present embodiment
| Alloy species | Fine aluminium | Alusil alloy ZAlSi12 | Fine copper | Pure chromium |
| Purity | 99.8%Al | 87.5%Al, 12.2%Si | 99.5%Cu | 99.4%Cr |
| Addition | 8.635kg | 6.14kg | 0.15kg | 0.075kg |
Concrete technology：Each raw material is added after smelting furnace, starts power transmission heating when being evacuated to 7Pa；When starting to occur molten metal, stop
Only vacuumize, be filled with nitrogen to 0.05MPa；After alloy all melts, control molten metal temperature keeps 7min to 700 DEG C；
Finally more than liquidus curve 85 DEG C cast.
The mass content of the chemical composition of aluminium base coating material is obtained by the present embodiment：Si 5.19%、Cu 0.99%、Cr
0.51%, remaining is Al and inevitable impurity.
Zinc-plated experiment：Galvanizing is carried out using the coating material of embodiment 1~4, gained coating main performance index is shown in Table
5。
Claims (7)
1. a kind of be used for hot press-formed aluminium base coating material, it is characterised in that the mass percentage content of its composition is：Si
1.0~20.0%, Cu 0.5~15.0%, Cr 0.1~2.0%, remaining is Al and inevitable impurity.
2. according to claim 1 be used for hot press-formed aluminium base coating material, it is characterised in that：The impurity it is total
Amount≤1%.
3. it is used for the smelting process of hot press-formed aluminium base coating material described in claim 1, it is characterised in that its method is walked
Suddenly it is：
（1）Load weighted raw material is put into smelting furnace, is evacuated to after vacuum≤10Pa and starts power transmission heating；
（2）When starting to occur molten metal in smelting furnace, stop vacuumizing, be filled with inert gas to air pressure reach 0.04~
0.07MPa；
（3）After raw material is completely melt, keep molten state 5min and more than；
（4）Finally cast, cast temperature is controlled 50 DEG C~100 DEG C more than liquidus curve.
4. the smelting process according to claim 3 for hot press-formed aluminium base coating material, it is characterised in that：Institute
State step（3）In, temperature >=700 DEG C during control molten state.
5. the smelting process according to claim 3 for hot press-formed aluminium base coating material, it is characterised in that：Institute
State step（1）In, raw material is selected from simple metal, alusil alloy, aluminium copper or other intermediate alloys.
6. the smelting process according to claim 3 for hot press-formed aluminium base coating material, it is characterised in that：Institute
State step（1）In, smelting furnace is using oxidation aluminium material.
7. the smelting process for hot press-formed aluminium base coating material according to claim 3-6 any one, its
It is characterised by：The step（2）In, inert gas is nitrogen or argon gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710219354.9A CN107022702A (en) | 2017-04-06 | 2017-04-06 | For hot press-formed aluminium base coating material and its smelting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710219354.9A CN107022702A (en) | 2017-04-06 | 2017-04-06 | For hot press-formed aluminium base coating material and its smelting process |
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| CN107022702A true CN107022702A (en) | 2017-08-08 |
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| CN201710219354.9A Pending CN107022702A (en) | 2017-04-06 | 2017-04-06 | For hot press-formed aluminium base coating material and its smelting process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019095514A1 (en) * | 2017-11-16 | 2019-05-23 | 河钢股份有限公司 | Coating for hot stamping-formed steel and production method therefor |
| EP3922738A4 (en) * | 2019-02-05 | 2022-03-23 | Nippon Steel Corporation | Coated steel member, coated steel sheet, and methods for producing same |
Citations (5)
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|---|---|---|---|---|
| JP2012126993A (en) * | 2010-11-26 | 2012-07-05 | Jfe Steel Corp | Al-Zn-BASED HOT-DIP PLATED STEEL SHEET AND MANUFACTURING METHOD THEREOF |
| CN102851629A (en) * | 2011-06-28 | 2013-01-02 | 鞍钢股份有限公司 | Aluminum-plated silicon steel plate for hot press molding and manufacturing method thereof |
| CN102994782A (en) * | 2012-10-25 | 2013-03-27 | 栾清杨 | Preparation method of Al alloy |
| CN103952653A (en) * | 2014-04-18 | 2014-07-30 | 河北钢铁股份有限公司 | High-temperature-oxidization-resistant coating material for hot-stamped formed steel and hot-dipping plating technology |
| CN104233149A (en) * | 2014-08-28 | 2014-12-24 | 河北钢铁股份有限公司 | High-temperature oxidation resistant plating layer material and hot dipping method for hot stamping formed steel |
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2017
- 2017-04-06 CN CN201710219354.9A patent/CN107022702A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012126993A (en) * | 2010-11-26 | 2012-07-05 | Jfe Steel Corp | Al-Zn-BASED HOT-DIP PLATED STEEL SHEET AND MANUFACTURING METHOD THEREOF |
| CN102851629A (en) * | 2011-06-28 | 2013-01-02 | 鞍钢股份有限公司 | Aluminum-plated silicon steel plate for hot press molding and manufacturing method thereof |
| CN102994782A (en) * | 2012-10-25 | 2013-03-27 | 栾清杨 | Preparation method of Al alloy |
| CN103952653A (en) * | 2014-04-18 | 2014-07-30 | 河北钢铁股份有限公司 | High-temperature-oxidization-resistant coating material for hot-stamped formed steel and hot-dipping plating technology |
| CN104233149A (en) * | 2014-08-28 | 2014-12-24 | 河北钢铁股份有限公司 | High-temperature oxidation resistant plating layer material and hot dipping method for hot stamping formed steel |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019095514A1 (en) * | 2017-11-16 | 2019-05-23 | 河钢股份有限公司 | Coating for hot stamping-formed steel and production method therefor |
| EP3712293A4 (en) * | 2017-11-16 | 2021-09-15 | HBIS Company Limited | Coating for hot stamping-formed steel and production method therefor |
| EP3922738A4 (en) * | 2019-02-05 | 2022-03-23 | Nippon Steel Corporation | Coated steel member, coated steel sheet, and methods for producing same |
| US11427882B2 (en) | 2019-02-05 | 2022-08-30 | Nippon Steel Corporation | Coated steel member, coated steel sheet, and methods for manufacturing same |
| US11618933B2 (en) | 2019-02-05 | 2023-04-04 | Nippon Steel Corporation | Coated steel member, coated steel sheet, and methods for manufacturing same |
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Application publication date: 20170808 |