CN107584232A - Economic and environment-friendly type high-quality core wire steel - Google Patents
Economic and environment-friendly type high-quality core wire steel Download PDFInfo
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- CN107584232A CN107584232A CN201710961520.2A CN201710961520A CN107584232A CN 107584232 A CN107584232 A CN 107584232A CN 201710961520 A CN201710961520 A CN 201710961520A CN 107584232 A CN107584232 A CN 107584232A
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Abstract
The invention discloses a kind of economic and environment-friendly type high-quality core wire steel, the core wire is with the chemical composition and its percentage by weight of steel：C：0.06~0.08, Si≤0.04, Mn：0.40~0.50, Ni≤0.05, Cr≤0.05, Cu≤0.05, P≤0.015, S≤0.015, As≤0.005, Al≤0.040, N≤0.005, O≤0.003；Surplus is Fe and inevitable impurity.The present invention proposes a kind of low C, low Si, low gas (N, O), low As core wires, is melted in welding process, reduces As2O3The amount of particle dust, growing up for weld fumes particle is controlled, reduce the generation of nitrogen oxides, the environmental pollution in welding process is controlled from source.
Description
Technical field
The present invention relates to special steel material production technical field, in particular to a kind of economic and environment-friendly type high-quality core wire steel.
Background technology
The form of welding is varied, can make to form connection between different hardwares, be a kind of important mechanic
Industry technology.But during welding, caused pollutant kind is more, big to environmental hazard so that welder is susceptible to suffer from more
Kind occupational disease, such as welder's silicosis, manganese poisoning, electric ophthalmia.
Welding pollution mainly includes Fe2O3、SiO2, the flue dust such as MnO, and HF, CO, CO2、 NOx、CH4Deng waste gas, these
Pollution produces during welding, and core wire then melts in welding in itself, and as filling metal and liquid mother metal gold
Category fusion forms weld seam.The pollution sources in core wire are controlled, are a kind of effective methods for eliminating welding pollution.
The content of the invention
Present invention aim to provide a kind of economic and environment-friendly type high-quality core wire steel, gained core wire containing As, N, O,
Al content is low, can effectively control weld fumes particle grow up and the formation of nitrogen oxides, reduce welding pollution.
To achieve the above object, the economic and environment-friendly type high-quality core wire steel designed by the present invention, it is characterized in that,
The core wire is with the chemical element and its percentage by weight of steel：
C：0.06~0.08, Si≤0.04, Mn：0.40~0.50, Ni≤0.05, Cr≤0.05, Cu≤0.05, P≤
0.015, S≤0.015, As≤0.005, Al≤0.040, N≤0.005, O≤0.003；Surplus be Fe and inevitably it is miscellaneous
Matter.
Preferably, the core wire is with the chemical analysis and its percentage by weight of steel：C：0.06~0.08, Si：0.01~
0.03, Mn：0.40~0.50, Ni≤0.015, Cr≤0.025, Cu≤0.015, P≤0.015, S≤0.012, As≤
0.004, Al≤0.0025, N≤0.005, O≤0.003；Surplus is Fe and inevitable impurity.
It is furthermore preferred that the core wire is with the chemical analysis and its percentage by weight of steel：C：0.0707, Si：0.0149, Mn：
0.419, Ni：0.011, Cr：0.016, Cu：0.0009, P：0.0009, S：0.0047, As：0.004, Al：0.0021, N：
0.0038, O：0.0018；Surplus is Fe and inevitable impurity.
Further, the core wire steel matching variety classes welding medicament made of welding rod tensile strength be 400~
600MPa.The reason for each element controls in the present invention：
C：Content increase, the hardness and intensity of steel also improve, but plasticity and toughness decline therewith, therefore optimum range controls
0.06%~0.08%.
Si：Conventional deoxidier, have and melt invigoration effect admittedly, improve quenching degree, temper resistance, to improving comprehensive mechanical property
Favorably, elastic limit is improved, increases the corrosion resistance under natural conditions.When content is higher, weldability is reduced, and be easily caused cold short；
Therefore optimum range control is in Si≤0.04%.
Mn：The lower change point of steel is reduced, degree of supercooling when increase austenite cools down, refines pearlitic structrure to improve its power
Performance is learned, is the important alloying element of low-alloy steel, the quenching degree of steel can be significantly improved, added when being configured to welding rod in coating
A certain amount of Mn, therefore optimum range control is 0.40%~0.50%.
Ni：Plasticity and toughness are improved, is become apparent to improving low-temperature flexibility, improves corrosion resisting property, this welding rod steel mainly produces
Low level welding rod, therefore scope control is in Ni≤0.05%.
Cr, Cu are equivalent to impurity element in core wire, therefore scope control is in Cr≤0.05%, Cu≤0.05%.
P:Easily cause to weld cold cracking, produce cold short phenomenon, deteriorate the quality of steel, phosphorus content is high, is unfavorable for improving welding
Performance；Therefore scope control is in P≤0.015%.
S：Easily cause to weld hot tearing, produce hot-short phenomenon, deteriorate the quality of steel, sulfur content is high, is unfavorable for improving welding
Performance；Therefore scope control is in S≤0.015%.
As:A kind of harmful element, As, which can react, in welding produces As2O3Particle dust, therefore scope control
In As≤0.005%.
N：In mild steel, residual nitrogen can cause aged brittleness, while oxides of nitrogen gas can be generated in welding process,
Therefore scope control is in N≤0.005%.
O：Exist in steel in a manner of field trash, influence the various performances of steel, therefore scope control is in O≤0.003%.
Al：Al presence causes its intensity and toughness to reduce in weld seam, therefore is free of Al, scope control as far as possible in welding material
System is in Al≤0.040%
Compared with prior art, the invention has the advantages that：
First, the present invention proposes a kind of low C, low Si, low gas (N, O), low As core wires steel, melted in welding process
Change, reduce As2O3The amount of particle dust, growing up for weld fumes particle is controlled, reduce the generation of nitrogen oxides, from source
The environmental pollution in welding process is controlled on head；
Second, compared with the core wire of the present invention is when H08A is as core wire, with the welding rod produced after the cooperation of same coating
30% can be reduced in fume amount total concentration caused by welding, greatly improves welding surroundings.
Third, the present invention core wire steel can coordinate heterogeneity coating generate tensile strength rank be 400~
600MPa welding rod.
Embodiment
With reference to specific embodiment, the present invention is described in further detail, and following examples are only as preferable tool
Body embodiment.
The manufacture method of the economic and environment-friendly type high-quality core wire steel of the present invention belongs to routine techniques, and each operation includes iron successively
Water desulfurization → LD blowing → slag-stopping tapping → billet continuous casting → strand inspection and cleaning → square billet heating → high speed wire rolling → control are cold
And collection volume → finishing → inspection → storage, the following core wire of the present invention are manufactured with steel by above-mentioned conventional method.
Embodiment 1
Core wire is with the chemical element and its percentage by weight of steel：C:0.0707, Si:0.0149, Mn:0.419, Ni:
0.011, Cr:0.016, Cu:0.009, P:0.009,S:0.0047, As:0.004, N:0.0038,O:0.0018；Surplus is Fe
And inevitable impurity.
Embodiment 2
Core wire is with the chemical element and its percentage by weight of steel：C:0.0636, Si:0.0155, Mn:0.402, Ni:
0.008, Cr:0.005, Cu:0.009, P:0.008,S:0.005, As:0.004, N:0.0042,O:0.0016；Surplus is Fe
And inevitable impurity.
Embodiment 3
Core wire is with the chemical element and its percentage by weight of steel：C:0.0609, Si:0.0203, Mn:0.401, Ni:
0.011, Cr:0.017, Cu:0.009, P:0.010,S:0.0074, As:0.004, N:0.0036,O:0.0024；Surplus is Fe
And inevitable impurity.
Embodiment 4
The chemical element and its percentage by weight of core wire be：C:0.0619, Si:0.0133, Mn:0.423, Ni:0.014,
Cr:0.024, Cu:0.011, P:0.009,S:0.0055, As:0.004, N:0.0032,O:0.0025；Surplus is Fe and can not
The impurity avoided.
Embodiment 5
Core wire is with the chemical element and its percentage by weight of steel：C:0.0791, Si:0.027, Mn:0.488, Ni:
0.012, Cr:0.021, Cu:0.015, P:0.014,S:0.012, As:0.003, N:0.0024,O:0.0021；Surplus is Fe
And inevitable impurity.
Embodiment 6
Core wire is with the chemical element and its percentage by weight of steel：C:0.0603, Si:0.018, Mn:0.404, Ni:
0.008, Cr:0.009, Cu:0.015, P:0.013,S:0.010, As:0.003, N:0.0026,O:0.0028；Surplus is Fe
And inevitable impurity.
Comparative example 1
Contrast core wire is H08A, and H08A chemical element and its percentage by weight is as shown in table 1 below.
The H08A of table 1 chemical element (wt.%)
Embodiment 7
Welding rod steel J507 welding rods are made using the H08A core wires in the core wire in embodiment 1 and comparative example 1 and coating, point
J507 welding rods A is not designated as1With J507 welding rods B1, carry out deposited metal soldering test, caused flue dust constituent concentration such as table 2 below institute
Show.
The J507 welding rods A of table 21With welding rod B1Concentration (the mg/m of each flue dust of deposited metal soldering test3)
To J507 welding rods A1Mechanics Performance Testing is carried out, test result is：Tensile strength Rm574 MPa, yield strength Rel
464MPa, elongation 30%, -40 DEG C of ballistic work KV2 125J。
It can be obtained by embodiment 7, core wire of the invention is compared to H08A core wires, caused by being welded with deposited metal
Flue dust total amount has obvious reduction, and flue dust total amount can reduce 30%.
Embodiment 8
Use the J507 welding rods A in embodiment 71With J507 welding rods B1Soldering test, caused each flue dust are carried out with Q345 steel
The concentration of composition is as shown in table 3 below.
The J507 welding rods A of table 31With welding rod B1With the concentration (mg/m of each flue dust of Q345 steel soldering tests3)
Can be obtained by embodiment 8, core wire of the invention compared to H08A core wires, with the welding of Q345 steel caused by flue dust it is total
Amount has obvious reduction, and flue dust total amount can reduce 30%.
Compositions of surfacing metal in the present embodiment mainly includes ilmenite, rutile, titanium dioxide, feldspar, cloud mud, mica, white clouds
Stone, mid-carbon fe-mn and waterglass, its ratio can be selected as needed, and conventional commercially available coating may be selected.
Other parts not being described in detail are prior art.
The foregoing is only a specific embodiment of the invention, it is noted that any those skilled in the art exist
Disclosed herein technical scope in, the change or replacement that can readily occur in, should all cover protection scope of the present invention it
It is interior.
Claims (4)
- A kind of 1. economic and environment-friendly type high-quality core wire steel, it is characterised in that：The chemical analysis and its weight hundred of the core wire steel Point ratio is：C：0.06~0.08, Si≤0.04, Mn：0.40~0.50, Ni≤0.05, Cr≤0.05, Cu≤0.05, P≤0.015, S ≤ 0.015, As≤0.005, Al≤0.040, N≤0.005, O≤0.003；Surplus is Fe and inevitable impurity.
- 2. economic and environment-friendly type high-quality core wire steel according to claim 1, it is characterised in that：The chemistry of the core wire steel Composition and its percentage by weight are：C：0.06~0.08, Si：0.01~0.03, Mn：0.40~0.50, Ni≤0.015, Cr≤0.025, Cu≤0.015, P ≤ 0.015, S≤0.012, As≤0.004, Al≤0.0025, N≤0.005, O≤0.003；Surplus is for Fe and inevitably Impurity.
- 3. economic and environment-friendly type high-quality core wire steel according to claim 1, it is characterised in that：The chemistry of the core wire steel Composition and its percentage by weight are：C：0.0707, Si：0.0149, Mn：0.419, Ni：0.011, Cr：0.016, Cu：0.0009, P：0.0009, S： 0.0047, As：0.004, Al：0.0021, N：0.0038, O：0.0018；Surplus is Fe and inevitable impurity.
- 4. economic and environment-friendly type high-quality core wire steel according to claim 1, it is characterised in that：The core wire is matched not with steel It is 400~600MPa with welding rod tensile strength made of species welding medicament.
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| CN201710961520.2A CN107584232A (en) | 2017-10-16 | 2017-10-16 | Economic and environment-friendly type high-quality core wire steel |
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| CN201710961520.2A CN107584232A (en) | 2017-10-16 | 2017-10-16 | Economic and environment-friendly type high-quality core wire steel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113894463A (en) * | 2021-09-30 | 2022-01-07 | 武汉钢铁有限公司 | Corrosion-resistant thermite welding flux suitable for U68CuCr steel rail and welding method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785952A (en) * | 2015-04-14 | 2015-07-22 | 武汉钢铁(集团)公司 | High-purity steel for welding rod |
-
2017
- 2017-10-16 CN CN201710961520.2A patent/CN107584232A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785952A (en) * | 2015-04-14 | 2015-07-22 | 武汉钢铁(集团)公司 | High-purity steel for welding rod |
Non-Patent Citations (2)
| Title |
|---|
| 刘世杰 等: "《现代劳动卫生学》", 31 August 1994, 人民卫生出版社 * |
| 李碧春等: "H08A焊接用钢圆盘条生产与实践", 《材料导报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113894463A (en) * | 2021-09-30 | 2022-01-07 | 武汉钢铁有限公司 | Corrosion-resistant thermite welding flux suitable for U68CuCr steel rail and welding method thereof |
| CN113894463B (en) * | 2021-09-30 | 2023-01-24 | 武汉钢铁有限公司 | Corrosion-resistant thermite welding flux suitable for U68CuCr steel rail and welding method thereof |
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