CN109082600A - A kind of low resistance ultra-low carbon steel material and preparation method - Google Patents
A kind of low resistance ultra-low carbon steel material and preparation method Download PDFInfo
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- CN109082600A CN109082600A CN201811051177.9A CN201811051177A CN109082600A CN 109082600 A CN109082600 A CN 109082600A CN 201811051177 A CN201811051177 A CN 201811051177A CN 109082600 A CN109082600 A CN 109082600A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
Abstract
This application discloses a kind of low resistance ultra-low carbon steel materials, it is as follows by the mass percent proportion of component ingredient: C:0.01%~0.05%, Mn:0.03%~0.15%, P:0.005%~0.012%, S0:002%~0.005%, Al:0.002%~0.02%, Si :≤0.02%, [O] :≤0.015%, [N] :≤0.0035%, remaining are as follows: Fe.By optimization C, Mn, P, S0, Al, Si, [O], [N] and Fe main element and gas content control range, the low-resistance stability contorting of ultra-low carbon steel is realized, guarantee that ultra-low carbon steel has high conductivity and high intensity.
Description
Technical field
This application involves field of material technology, more particularly to a kind of low resistance ultra-low carbon steel material and preparation method.
Background technique
Welding wire goes out to there is now two, 30 years history, since welding wire can be with the higher copper of save the cost simultaneously
And have mechanical performance more better than copper wire, it is widely used to post and telecommunications communication, ultra-high-tension power transmission line, coaxial cable, electronics at present
The fields such as component down-lead.
Currently, processing welding wire mainly uses ultra-low-carbon steel (C < 0.01%) gren rod to carry out hot candied and plating
Copper is dialled by the drawing of ten multi-pass, is drawn and is dialled deflection greater than 80%, copper plate and steel core overall deformation make tension from the coarse to fine
Intensity reaches 600MPa.This method major defect is complex process, and welding wire intensity is low, and high-intensitive (> 800MPa) is not achieved
The standard of welding wire.
Summary of the invention
(1) technical problems to be solved:
The purpose of the present invention is to propose to a kind of low resistance ultra-low carbon steel material and preparation methods, and it is low to solve welding wire intensity
The problem of.
(2) technical solution:
In order to solve the above-mentioned technical problem, this application provides a kind of low resistance ultra-low carbon steel materials, by component
The mass percent proportion of ingredient is as follows: C:0.01%~0.05%, Mn:0.03%~0.15%, P:0.005%~
0.012%, S0:002%~0.005%, Al:0.002%~0.02%, Si :≤0.02%, [O] :≤0.015%, [N] :≤
0.0035%；Remaining are as follows: Fe.
In some embodiments, optionally, as follows by the mass percent proportion of component ingredient: C:0.02%~
0.04%, Mn:0.08%~0.12%, P:0.008%~0.010%, S0:003%~0.004%, Al:0.008%~
0.016%, Si :≤0.01%, [O] :≤0.010%, [N] :≤0.0030%；Remaining are as follows: Fe.
In some embodiments, optionally, as follows by the mass percent proportion of component ingredient: C:0.035%,
Mn:0.1%, P:0.009%, S0:0035%, Al:0.012%, Si :≤0.005%, [O] :≤0.005%, [N] :≤
0.0020%；Remaining are as follows: Fe.
The technical solution of the application is contained by optimization C, Mn, P, S0, Al, Si, [O], [N] and Fe main element and gas
Control range is measured, realizes the low-resistance stability contorting of ultra-low carbon steel, guarantees that ultra-low carbon steel has high conductivity and high intensity.
The application also provides a kind of preparation method of low resistance ultra-low carbon steel material, and the carbon steel material is according to such as above-mentioned
One is matched, and the preparation method includes the following steps:
Desulfurized step: desulfurization pretreatment is carried out to molten iron, it is ensured that enter converter molten steel sulfur content up to 0.004%~0.006%；
With mid-carbon fe-mn final deoxidizing, additional amount 1.0~3.5kg/t steel calculates convertor deacidification alloy addition according to converter terminal ingredient；
Using slag-stopping tapping, tapping temperature are as follows: 1700~1760 DEG C；
Decarbonation process: it is handled by VOD or RH vacuum refining, so that vacuum degree≤50mbar；Take vacuum decarburization or light
The mode of processing carries out decarburization to molten steel, so that target C≤0.03%；
Casting step: slag blocking wall, middle packet liquid level ﹥ 600mm is arranged using full guard casting mode, middle packet in small billet casting machine；
Crystallizer uses electromagnetic agitation, and tundish uses low-carbon high alkalinity coverture.
In some embodiments, optionally, further includes:
1) when in ultra-low carbon steel manganese content from 0.60% be reduced to 0.30%, the bare wire electricity of corresponding welding wire ￠ 1.60mm
Resistance can be reduced to 60 Ω/km, and carbon content is increased to 0.02% from < 0.01% in ultra-low carbon steel, corresponding welding wire ￠ 1.60mm
Bare wire tensile strength 800MPa can be increased to by < 500MPa；
2) manganese content from 0.30% is reduced to 0.15% in ultra-low carbon steel, the bare wire resistance of corresponding welding wire ￠ 1.60mm
It is reduced to 56 Ω/km from 60 Ω/km, carbon content is increased to 0.05% from 0.02% in ultra-low carbon steel, corresponding welding wire ￠
The bare wire tensile strength of 1.60mm can be increased to 1150MPa by 800MPa.
In some embodiments, optionally, the converter molten steel sulfur content reaches 0.005%.
In some embodiments, optionally, the tapping temperature are as follows: 1730 DEG C.
In some embodiments, optionally, the additional amount 2.5kg/t steel.
In some embodiments, optionally, target C≤0.02%.
In some embodiments, optionally, the vacuum degree≤25mbar.
The technical solution of the application, by desulfurization, decarburization, casting, the low resistance ultra-low carbon steel material of production has intensity
High and production cost is low, in addition, not polluting the environment.
According to the accompanying drawings to the detailed description of the specific embodiment of the application, those skilled in the art will be more
Above-mentioned and other purposes, the advantages and features of the application are illustrated.
Detailed description of the invention
Some specific embodiments of the application are described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the flow chart according to the preparation method of the low resistance ultra-low carbon steel material of the application one embodiment.
Specific embodiment
Below by specific embodiment combination attached drawing, the application is described in further detail.Following embodiment is used for
Illustrate the application, but is not limited to scope of the present application.
Due to the low problem of current welding wire intensity, the application provides a kind of low resistance ultra-low carbon steel material.
Product etc. will be described in detail by basic engineering, extension design and alternative design below.
This application provides a kind of low resistance ultra-low carbon steel materials, by the mass percent of component ingredient with such as
Under: C:0.01%~0.05%, Mn:0.03%~0.15%, P:0.005%~0.012%, S0:002%~0.005%,
Al:0.002%~0.02%, Si :≤0.02%, [O] :≤0.015%,
[N] :≤0.0035%, remaining are as follows: Fe.By optimizing C, Mn, P, S0, Al, Si, [O], [N] and Fe main element
With gas content control range, the low-resistance stability contorting of ultra-low carbon steel is realized, guarantee that ultra-low carbon steel has high conductivity and height
Intensity.
In this embodiment, optionally, Mo can also be increased, matched by mass percentage as follows: the Mo:0%~
0.35%, it further improves hardness, density, resistance to corrosion and has thermal expansion coefficient small, good conductive and thermally conductive etc.
Characteristic.
In one embodiment, optionally, as follows by the mass percent proportion of component ingredient: C:0.02%~
0.04%, Mn:0.08%~0.12%, P:0.008%~0.010%, S0:003%~0.004%, Al:0.008%~
0.016%, Si :≤0.01%, [O] :≤0.010%, [N] :≤0.0030%, remaining are as follows: Fe.By optimization C, Mn, P, S0,
Al, Si, [O], [N] and Fe main element and gas content control range realize the low-resistance stability contorting of ultra-low carbon steel, guarantee
Ultra-low carbon steel has high conductivity and high intensity.
In this embodiment, optionally, Mo can also be increased, mass percent proportion is as follows: the Mo:5%~
0.28%, it further improves hardness, density, resistance to corrosion and has thermal expansion coefficient small, good conductive and thermally conductive etc.
Characteristic.
In one embodiment, optionally, as follows by the mass percent proportion of component ingredient: C:0.035%,
Mn:0.1%, P:0.009%, S0:0035%, Al:0.012%, Si :≤0.005%, [O] :≤0.005%, [N] :≤
0.0020%；Remaining are as follows: Fe.Pass through optimization C, Mn, P, S0, Al, Si, [O], [N] and Fe main element and Control of gas content
Range realizes the low-resistance stability contorting of ultra-low carbon steel, guarantees that ultra-low carbon steel has high conductivity and high intensity.
In this embodiment, optionally, can also increase Mo its match by mass percentage it is as follows: the Mo:0.5%~
0.28%, it further improves hardness, density, resistance to corrosion and has thermal expansion coefficient small, good conductive and thermally conductive etc.
Characteristic.
The application also provides a kind of preparation method of low resistance ultra-low carbon steel material, and the carbon steel material is according to such as above-mentioned
One is matched, and the preparation method includes the following steps:
Desulfurized step: desulfurization pretreatment is carried out to molten iron, it is ensured that enter converter molten steel sulfur content up to 0.004%~0.006%；
With mid-carbon fe-mn final deoxidizing, additional amount 1.0~3.5kg/t steel calculates convertor deacidification alloy addition according to converter terminal ingredient；
Using slag-stopping tapping, tapping temperature are as follows: 1700~1760 DEG C；
Decarbonation process: it is handled by VOD or RH vacuum refining, so that vacuum degree≤50mbar；Take vacuum decarburization or light
The mode of processing carries out decarburization to molten steel, so that target C≤0.03%；
Casting step: slag blocking wall, middle packet liquid level ﹥ 600mm is arranged using full guard casting mode, middle packet in small billet casting machine；
Crystallizer uses electromagnetic agitation, and tundish uses low-carbon high alkalinity coverture.
Steel wire base-material resistance can be reduced by the above method, reduces the generation of vortex and surface layer kelvin effect, improves copper-clad
Also correspondence improves intensity while steel wire electric conductivity.
In this embodiment, further, the converter molten steel sulfur content reaches 0.005%, the tapping temperature are as follows:
1730 DEG C, the additional amount 2.5kg/t steel, target C≤0.02%, the vacuum degree≤25mbar.
In one embodiment, optionally, in order to prepare the welding wire with high conduction performance and high intensity, to steel wire
Base ingredients optimize, to reduce steel wire base-material resistance, reduce the generation of vortex and surface layer kelvin effect, improve copper
Baogang's silk electric conductivity and tensile strength.It is found by testing research, according to the ultra-low carbon steel of the application, when manganese in ultra-low carbon steel
Content is reduced to 0.30% from 0.60%, and the bare wire resistance of corresponding welding wire ￠ 1.60mm can be reduced to 60 Ω/km, extremely low carbon
Carbon content is increased to 0.02% from < 0.01% in steel, and the bare wire tensile strength of corresponding welding wire ￠ 1.60mm can be by < 500MPa
It is increased to 800MPa.Manganese content is reduced to 0.15% from 0.30% in ultra-low carbon steel, the bare wire of corresponding welding wire ￠ 1.60mm
Resistance is reduced to 56 Ω/km from 60 Ω/km, and carbon content is increased to 0.05% from 0.02% in ultra-low carbon steel, corresponding welding wire
The bare wire tensile strength of ￠ 1.60mm can be increased to 1150MPa by 800MPa.The studies above test data explanation, passes through the application
The ultra-low carbon steel main element of design and the setting of gas content control range, can be realized ultra-low carbon steel low resistance and high intensity
Stability contorting.
Table 1 are as follows: the element (quality % meter) of low resistance ultra-low carbon steel YH03；
| Heat (batch) number | C (%) | Si (%) | Mn (%) | P (%) | S (%) |
| 170611 | 0.015 | 0.01 | 0.12 | 0.010 | 0.005 |
| 170824 | 0.019 | 0.015 | 0.10 | 0.008 | 0.003 |
| 170835 | 0.021 | 0.008 | 0.09 | 0.006 | 0.004 |
| 170956 | 0.026 | 0.006 | 0.08 | 0.011 | 0.002 |
| 180255 | 0.03 | 0.009 | 0.13 | 0.009 | 0.005 |
| 180366 | 0.036 | 0.013 | 0.11 | 0.010 | 0.003 |
Experimental method and result:
Test sample and control sample are rolled into the wire rod that specification is ￠ 6.5mm respectively, produce user through welding wire
￠ 1.60mm is pulled to, its resistance value is tested by resistance meter, its tensile strength is tested by mechanical testing instrument, is detected
It the results are shown in Table 2.
Table 2 are as follows: ￠ 1.60mm welding wire resistance and performance comparison data；
As testing result as it can be seen that welding wire prepared by the low resistance ultra-low carbon steel of the application is compared to control sample,
Its resistance is decreased significantly, in addition, welding wire intensity prepared by the low resistance ultra-low carbon steel of the application significantly improves, simultaneously
Reduce copper facing cost.While improving product quality, production cost is also minimized.
The preferable specific embodiment of the above, only the application, but the protection scope of the application is not limited thereto,
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by anyone skilled in the art,
Should all it cover within the scope of protection of this application.Therefore, the protection scope of the application should be with scope of protection of the claims
Subject to.
Claims (10)
1. a kind of low resistance ultra-low carbon steel material, as follows by the mass percent proportion of component ingredient:
C:0.01%~0.05%, Mn:0.03%~0.15%, P:0.005%~0.012%, S0:002%~0.005%,
Al:0.002%~0.02%；
Si :≤0.02%, [O] :≤0.015%, [N] :≤0.0035%；
Remaining are as follows: Fe.
2. low resistance ultra-low carbon steel material according to claim 1, which is characterized in that by the quality hundred of component ingredient
Divide as follows than matching:
C:0.02%~0.04%, Mn:0.08%~0.12%, P:0.008%~0.010%, S0:003%~0.004%,
Al:0.008%~0.016%；
Si :≤0.01%, [O] :≤0.010%, [N] :≤0.0030%；
Remaining are as follows: Fe.
3. low resistance ultra-low carbon steel material according to claim 1, which is characterized in that by the quality hundred of component ingredient
Divide as follows than matching:
C:0.035%, Mn:0.1%, P:0.009%, S0:0035%, Al:0.012%；
Si :≤0.005%, [O] :≤0.005%, [N] :≤0.0020%；
Remaining are as follows: Fe.
4. a kind of preparation method of low resistance ultra-low carbon steel material, the carbon steel material is according to any one of such as claim 1-3
The formula is matched, and the preparation method includes the following steps:
Desulfurized step: desulfurization pretreatment is carried out to molten iron, it is ensured that enter converter molten steel sulfur content up to 0.004%~0.006%；In
Carbon ferromanganese final deoxidizing, additional amount 1.0~3.5kg/t steel calculate convertor deacidification alloy addition according to converter terminal ingredient；Using
Slag-stopping tapping, tapping temperature are as follows: 1700~1760 DEG C；
Decarbonation process: it is handled by VOD or RH vacuum refining, so that vacuum degree≤50mbar；Take vacuum decarburization or light processing
Mode to molten steel carry out decarburization so that target C≤0.03%；
Casting step: slag blocking wall, middle packet liquid level ﹥ 600mm is arranged using full guard casting mode, middle packet in small billet casting machine；Crystallization
Device uses electromagnetic agitation, and tundish uses low-carbon high alkalinity coverture.
5. the preparation method according to claim 4, which is characterized in that further include:
1) when in ultra-low carbon steel manganese content from 0.60% be reduced to 0.30%, the bare wire resistance of corresponding welding wire ￠ 1.60mm can
It is reduced to 60 Ω/km, carbon content is increased to 0.02% from < 0.01% in ultra-low carbon steel, and corresponding welding wire ￠ 1.60mm's is naked
Line tensile strength can be increased to 800MPa by < 500MPa；
2) manganese content from 0.30% is reduced to 0.15% in ultra-low carbon steel, and the bare wire resistance of corresponding welding wire ￠ 1.60mm is from 60
Ω/km is reduced to 56 Ω/km, and carbon content is increased to 0.05% from 0.02% in ultra-low carbon steel, corresponding welding wire ￠ 1.60mm
Bare wire tensile strength 1150MPa can be increased to by 800MPa.
6. the preparation method according to claim 4, it is characterised in that:
The converter molten steel sulfur content reaches 0.005%.
7. the preparation method according to claim 4, it is characterised in that:
The tapping temperature are as follows: 1730 DEG C.
8. the preparation method according to claim 4, it is characterised in that:
The additional amount 2.5kg/t steel.
9. the preparation method according to claim 4, it is characterised in that:
Target C≤0.02%.
10. the preparation method according to claim 4, it is characterised in that:
Vacuum degree≤the 25mbar.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560237A (en) * | 2011-12-09 | 2012-07-11 | 河北省首钢迁安钢铁有限责任公司 | Low-carbon steel with low resistance as well as preparation method and application thereof in preparing weld wires |
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- 2018-09-10 CN CN201811051177.9A patent/CN109082600A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560237A (en) * | 2011-12-09 | 2012-07-11 | 河北省首钢迁安钢铁有限责任公司 | Low-carbon steel with low resistance as well as preparation method and application thereof in preparing weld wires |
Non-Patent Citations (1)
| Title |
|---|
| 曾正明等: "《实用金属材料选用手册》", 31 March 2012, 机械工业出版社 * |
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Application publication date: 20181225 |