CN110616292A - Special coated seamless solid pure calcium wire for steelmaking deoxidization and production method thereof - Google Patents
Special coated seamless solid pure calcium wire for steelmaking deoxidization and production method thereof Download PDFInfo
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- 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
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
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- 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
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Abstract
The invention belongs to the technical field of molten steel refining, and provides a special coated seamless solid pure calcium wire for steelmaking deoxidization and a production method thereof. The utility model provides a steelmaking deoxidization special use is scribbled seamless solid pure calcium line of seamless, includes calcium sandwich layer, anti-oxidation coating, seamless steel belt layer that connect gradually from inside to outside, and the diameter of calcium sandwich layer is 12.3 ~ 14.7mm, and the thickness of anti-oxidation coating is 0.32 ~ 0.45mm, and the thickness of seamless steel belt layer is 1.35 ~ 1.72mm, and anti-oxidation coating comprises the component of following part by weight: 10-15 parts of dopamine, 2.5-5.9 parts of polyimide, 3.2-7.1 parts of disodium hydrogen phosphate, 1.5-3.6 parts of glycerol and 5.5-8.3 parts of tris (hydroxymethyl) aminomethane. The production method comprises melting metal calcium, vacuum casting into metal calcium rod, heating, extruding into calcium core layer, uniformly coating antioxidant coating on the surface of calcium core layer, drying, coating with cold rolled steel strip, bending into tube blank, and welding. Through the technical scheme, the problems that the calcium content in the core wire is reduced due to the fact that the surface of the calcium wire is easy to oxidize, the yield of calcium is low, and the calcium treatment cost is high in the prior art are solved.
Description
Technical Field
The invention belongs to the technical field of molten steel refining, and relates to a special coated seamless solid pure calcium wire for steelmaking deoxidization and a production method thereof.
Background
During the steel-making process, calcium wires are fed into steel to perform non-metallic inclusion modification treatment, and the method is a common external treatment method for steel-making. The calcium fed to the bath is usually fed as cored wire. The traditional Si-Ca-Fe cored wire has the functions of deoxidation, desulfurization and denaturation treatment of inclusions in steel, is beneficial to the improvement of various performances of the steel and the efficient production of continuous casting, but has the problems of non-uniform material components, pollution to molten steel and unstable calcium yield because the inclusions and harmful elements are brought into the steel by impurity materials. In recent years, the solid pure calcium wire widely popularized and used in domestic steel mills solves the problems existing in the using process of the silicon-calcium and calcium-iron cored wires, and effectively improves the problems of wire clamping, wire breakage and the like in the wire feeding process caused by the uneven powder weight and components of the powder cored wire, steel slag splashing and the like caused by the high melting speed of the powder cored wire after contacting with molten steel.
In the prior art, in the production and processing process of solid pure calcium wires, in the process of coating the calcium metal wires into core wires, the calcium metal wires are exposed in the atmosphere, the surface of the calcium metal wires is seriously oxidized, a compact oxide layer is formed on the surface of the calcium metal wires, the consumption of the calcium metal wires can be increased, and the calcium content in the core wires is reduced, so that the quality index of the core-spun wires and the calcium treatment use effect of a steel mill are influenced, the yield of calcium is reduced, and the calcium feeding amount and the calcium treatment production cost of the steel mill are increased.
Disclosure of Invention
The invention provides a special coated seamless solid pure calcium wire for steelmaking deoxidization and a production method thereof, which solve the problems that the calcium content in a core wire is reduced, the yield of calcium is low and the calcium treatment cost is high due to easy oxidation of the surface of a calcium wire in the prior art.
The technical scheme of the invention is realized as follows:
a special coated seamless solid pure calcium wire for steelmaking deoxidization comprises a calcium core layer, an antioxidant coating and a seamless steel belt layer which are sequentially connected from inside to outside, wherein the diameter of the calcium core layer is 12.3-14.7 mm, the thickness of the antioxidant coating is 0.32-0.45 mm, and the thickness of the seamless steel belt layer is 1.35-1.72 mm.
As a further technical scheme, the oxidation-resistant coating comprises the following components in parts by weight:
10-15 parts of dopamine, 2.5-5.9 parts of polyimide, 3.2-7.1 parts of disodium hydrogen phosphate, 1.5-3.6 parts of glycerol and 5.5-8.3 parts of tris (hydroxymethyl) aminomethane.
As a further technical scheme, the oxidation-resistant coating comprises the following components in parts by weight:
13 parts of dopamine, 4.2 parts of polyimide, 5.1 parts of disodium hydrogen phosphate, 2.5 parts of glycerol and 6.9 parts of tris (hydroxymethyl) aminomethane.
As a further technical scheme, the seamless steel belt layer is made of cold-rolled steel belts.
The invention also provides a production method of the special coated seamless solid pure calcium wire for steelmaking deoxidization, which comprises the following steps:
s1, heating and melting metal calcium, and then casting the metal calcium into a metal calcium rod in vacuum;
s2, heating the metal calcium rod obtained in the step S1, and extruding the metal calcium rod into a calcium core layer;
s3, dissolving glycerol in water according to the formula of the antioxidant coating, heating to 60 ℃, sequentially adding dopamine, polyimide, disodium hydrogen phosphate and tris (hydroxymethyl) aminomethane, and uniformly mixing to obtain an antioxidant coating;
s4, uniformly coating the anti-oxidation coating obtained in the step S3 on the surface of the calcium core layer obtained in the step S2, and forming an anti-oxidation coating on the surface of the calcium core layer after drying;
s5, coating the calcium core layer with the antioxidant coating obtained in the step S4 with a cold-rolled steel strip, and bending and rolling the calcium core layer into a tube blank;
s6, welding the tube blank obtained in the step S5 to obtain the special coated seamless solid pure calcium wire for steelmaking deoxidization.
As a further technical scheme, the heating temperature in the step S2 is 370-380 ℃.
As a further technical scheme, the drying temperature in the step S4 is 100 ℃, and the time is 60 min.
The working principle and the beneficial effects of the invention are as follows:
1. according to the invention, the composition of the seamless calcium wire and the production method are matched, so that the oxidation resistance of the seamless calcium wire is obviously improved, the calcium loss is reduced, the calcium yield is improved, the calcium loss of the prepared seamless calcium wire after being placed for 3 days is reduced to be lower than 0.062%, and the yield of calcium in molten steel is as high as 43.72%, so that the production cost of calcium treatment is reduced, and the problems of low calcium content in a core wire, low calcium yield and high calcium treatment cost caused by easy oxidation of the surface of a calcium wire in the prior art are effectively solved.
2. According to the invention, the anti-oxidation coating is composed of glycerol, dopamine, polyimide, disodium hydrogen phosphate and tris (hydroxymethyl) aminomethane, and the components are matched with each other to form a uniform and compact anti-oxidation protective film on the surface of the calcium core layer, so that the anti-oxidation protective film is firmly combined with the calcium core layer and is used for isolating air, and the calcium consumption caused by the oxidation of the surface of the calcium core layer in the process of coating the calcium core layer by a steel strip is effectively avoided, so that the calcium content in the seamless calcium wire is improved, the quality and the using effect of the seamless calcium wire are further improved, the prepared seamless calcium wire is free of wire clamping and wire breakage in the molten steel wire feeding process, and meanwhile, the liquid splashing in the wire feeding process can be.
3. In the invention, dopamine is added into the anti-oxidation coating and is matched with polyimide, so that a compact anti-oxidation film can be formed on the surface of the calcium core layer, and the anti-oxidation property of the seamless calcium wire is improved; the disodium hydrogen phosphate is matched with the glycerol, so that the oxidation resistance of the seamless calcium line is further improved; the addition of disodium hydrogen phosphate provides an alkaline environment for the film formation of dopamine; the addition of the glycerol enables the dopamine and the polyimide to be mixed more uniformly in the water; the addition of the trihydroxymethyl aminomethane plays a role in promoting film formation, and simultaneously improves the adhesive force of the calcium core layer and the antioxidant coating; the multiple components are compounded, so that the oxidation resistance of the seamless calcium line is obviously improved, the calcium loss is effectively reduced, the production cost of calcium treatment is reduced, and the seamless calcium line is suitable for popularization and use.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A special coated seamless solid pure calcium wire for steelmaking deoxidization comprises a calcium core layer, an antioxidant coating and a seamless steel belt layer which are sequentially connected from inside to outside, wherein the diameter of the calcium core layer is 12.3mm, the thickness of the antioxidant coating is 0.32mm, the thickness of the seamless steel belt layer is 1.35mm,
the seamless steel belt layer is a cold-rolled steel belt, and the antioxidant coating comprises the following components in parts by weight:
10 parts of dopamine, 2.5 parts of polyimide, 3.2 parts of disodium hydrogen phosphate, 1.5 parts of glycerol and 5.5 parts of tris (hydroxymethyl) aminomethane.
A production method of a special coated seamless solid pure calcium wire for steelmaking deoxidization comprises the following steps:
s1, heating and melting metal calcium, and then casting the metal calcium into a metal calcium rod in vacuum;
s2, heating the metal calcium bar obtained in the step S1 to 370-380 ℃, and extruding the metal calcium bar into a calcium core layer;
s3, dissolving glycerol in water according to the formula of the antioxidant coating, heating to 60 ℃, sequentially adding dopamine, polyimide, disodium hydrogen phosphate and tris (hydroxymethyl) aminomethane, and uniformly mixing to obtain an antioxidant coating;
s4, uniformly coating the surface of the calcium core layer obtained in the step S2 with the antioxidant coating obtained in the step S3, and drying at 100 ℃ for 60min to form an antioxidant coating on the surface of the calcium core layer;
s5, coating the calcium core layer with the antioxidant coating obtained in the step S4 with a cold-rolled steel strip, and bending and rolling the calcium core layer into a tube blank;
s6, welding the tube blank obtained in the step S5 to obtain the special coated seamless solid pure calcium wire for steelmaking deoxidization.
Example 2
A special coated seamless solid pure calcium wire for steelmaking deoxidization comprises a calcium core layer, an antioxidant coating and a seamless steel belt layer which are sequentially connected from inside to outside, wherein the diameter of the calcium core layer is 14.7mm, the thickness of the antioxidant coating is 0.45mm, the thickness of the seamless steel belt layer is 1.72mm,
the seamless steel belt layer is a cold-rolled steel belt, and the antioxidant coating comprises the following components in parts by weight:
15 parts of dopamine, 5.9 parts of polyimide, 7.1 parts of disodium hydrogen phosphate, 3.6 parts of glycerol and 8.3 parts of tris (hydroxymethyl) aminomethane.
A production method of a special coated seamless solid pure calcium wire for steelmaking deoxidization comprises the following steps:
s1, heating and melting metal calcium, and then casting the metal calcium into a metal calcium rod in vacuum;
s2, heating the metal calcium bar obtained in the step S1 to 370-380 ℃, and extruding the metal calcium bar into a calcium core layer;
s3, dissolving glycerol in water according to the formula of the antioxidant coating, heating to 60 ℃, sequentially adding dopamine, polyimide, disodium hydrogen phosphate and tris (hydroxymethyl) aminomethane, and uniformly mixing to obtain an antioxidant coating;
s4, uniformly coating the surface of the calcium core layer obtained in the step S2 with the antioxidant coating obtained in the step S3, and drying at 100 ℃ for 60min to form an antioxidant coating on the surface of the calcium core layer;
s5, coating the calcium core layer with the antioxidant coating obtained in the step S4 with a cold-rolled steel strip, and bending and rolling the calcium core layer into a tube blank;
s6, welding the tube blank obtained in the step S5 to obtain the special coated seamless solid pure calcium wire for steelmaking deoxidization.
Example 3
A special coated seamless solid pure calcium wire for steelmaking deoxidization comprises a calcium core layer, an antioxidant coating and a seamless steel belt layer which are sequentially connected from inside to outside, wherein the diameter of the calcium core layer is 12.9mm, the thickness of the antioxidant coating is 0.37mm, the thickness of the seamless steel belt layer is 1.48mm,
the seamless steel belt layer is a cold-rolled steel belt, and the antioxidant coating comprises the following components in parts by weight:
12 parts of dopamine, 3.7 parts of polyimide, 4.6 parts of disodium hydrogen phosphate, 2.2 parts of glycerol and 6.2 parts of tris (hydroxymethyl) aminomethane.
A production method of a special coated seamless solid pure calcium wire for steelmaking deoxidization comprises the following steps:
s1, heating and melting metal calcium, and then casting the metal calcium into a metal calcium rod in vacuum;
s2, heating the metal calcium bar obtained in the step S1 to 370-380 ℃, and extruding the metal calcium bar into a calcium core layer;
s3, dissolving glycerol in water according to the formula of the antioxidant coating, heating to 60 ℃, sequentially adding dopamine, polyimide, disodium hydrogen phosphate and tris (hydroxymethyl) aminomethane, and uniformly mixing to obtain an antioxidant coating;
s4, uniformly coating the surface of the calcium core layer obtained in the step S2 with the antioxidant coating obtained in the step S3, and drying at 100 ℃ for 60min to form an antioxidant coating on the surface of the calcium core layer;
s5, coating the calcium core layer with the antioxidant coating obtained in the step S4 with a cold-rolled steel strip, and bending and rolling the calcium core layer into a tube blank;
s6, welding the tube blank obtained in the step S5 to obtain the special coated seamless solid pure calcium wire for steelmaking deoxidization.
Example 4
A special coated seamless solid pure calcium wire for steelmaking deoxidization comprises a calcium core layer, an antioxidant coating and a seamless steel belt layer which are sequentially connected from inside to outside, wherein the diameter of the calcium core layer is 14.2mm, the thickness of the antioxidant coating is 0.41mm, the thickness of the seamless steel belt layer is 1.59mm,
the seamless steel belt layer is a cold-rolled steel belt, and the antioxidant coating comprises the following components in parts by weight:
14 parts of dopamine, 4.8 parts of polyimide, 59 parts of disodium hydrogen phosphate, 3.1 parts of glycerol and 7.5 parts of tris (hydroxymethyl) aminomethane.
A production method of a special coated seamless solid pure calcium wire for steelmaking deoxidization comprises the following steps:
s1, heating and melting metal calcium, and then casting the metal calcium into a metal calcium rod in vacuum;
s2, heating the metal calcium bar obtained in the step S1 to 370-380 ℃, and extruding the metal calcium bar into a calcium core layer;
s3, dissolving glycerol in water according to the formula of the antioxidant coating, heating to 60 ℃, sequentially adding dopamine, polyimide, disodium hydrogen phosphate and tris (hydroxymethyl) aminomethane, and uniformly mixing to obtain an antioxidant coating;
s4, uniformly coating the surface of the calcium core layer obtained in the step S2 with the antioxidant coating obtained in the step S3, and drying at 100 ℃ for 60min to form an antioxidant coating on the surface of the calcium core layer;
s5, coating the calcium core layer with the antioxidant coating obtained in the step S4 with a cold-rolled steel strip, and bending and rolling the calcium core layer into a tube blank;
s6, welding the tube blank obtained in the step S5 to obtain the special coated seamless solid pure calcium wire for steelmaking deoxidization.
Example 5
A special coated seamless solid pure calcium wire for steelmaking deoxidization comprises a calcium core layer, an antioxidant coating and a seamless steel belt layer which are sequentially connected from inside to outside, wherein the diameter of the calcium core layer is 13.5mm, the thickness of the antioxidant coating is 0.39mm, the thickness of the seamless steel belt layer is 1.53mm,
the seamless steel belt layer is a cold-rolled steel belt, and the antioxidant coating comprises the following components in parts by weight:
13 parts of dopamine, 4.2 parts of polyimide, 5.1 parts of disodium hydrogen phosphate, 2.5 parts of glycerol and 6.9 parts of tris (hydroxymethyl) aminomethane.
A production method of a special coated seamless solid pure calcium wire for steelmaking deoxidization comprises the following steps:
s1, heating and melting metal calcium, and then casting the metal calcium into a metal calcium rod in vacuum;
s2, heating the metal calcium bar obtained in the step S1 to 370-380 ℃, and extruding the metal calcium bar into a calcium core layer;
s3, dissolving glycerol in water according to the formula of the antioxidant coating, heating to 60 ℃, sequentially adding dopamine, polyimide, disodium hydrogen phosphate and tris (hydroxymethyl) aminomethane, and uniformly mixing to obtain an antioxidant coating;
s4, uniformly coating the surface of the calcium core layer obtained in the step S2 with the antioxidant coating obtained in the step S3, and drying at 100 ℃ for 60min to form an antioxidant coating on the surface of the calcium core layer;
s5, coating the calcium core layer with the antioxidant coating obtained in the step S4 with a cold-rolled steel strip, and bending and rolling the calcium core layer into a tube blank;
s6, welding the tube blank obtained in the step S5 to obtain the special coated seamless solid pure calcium wire for steelmaking deoxidization.
Comparative example 1
A special coated seamless solid pure calcium wire for steelmaking deoxidization comprises a calcium core layer and a seamless steel belt layer which are sequentially connected from inside to outside, wherein the diameter of the calcium core layer is 13.5mm, the thickness of the seamless steel belt layer is 1.53mm,
a production method of a special coated seamless solid pure calcium wire for steelmaking deoxidization comprises the following steps:
s1, heating and melting metal calcium, and then casting the metal calcium into a metal calcium rod in vacuum;
s2, heating the metal calcium bar obtained in the step S1 to 370-380 ℃, and extruding the metal calcium bar into a calcium core layer;
s3, coating the calcium core layer obtained in the step S2 with a cold-rolled steel strip, and bending and rolling the calcium core layer into a tube blank;
s4, welding the tube blank obtained in the step S3 to obtain the special coated seamless solid pure calcium wire for steelmaking deoxidization.
Comparative example 2
A special coated seamless solid pure calcium wire for steelmaking deoxidization comprises a calcium core layer, an antioxidant coating and a seamless steel belt layer which are sequentially connected from inside to outside, wherein the diameter of the calcium core layer is 13.5mm, the thickness of the antioxidant coating is 0.39mm, the thickness of the seamless steel belt layer is 1.53mm,
the seamless steel belt layer is a cold-rolled steel belt, and the antioxidant coating comprises the following components in parts by weight:
5.1 parts of disodium hydrogen phosphate, 2.5 parts of glycerol and 6.9 parts of tris (hydroxymethyl) aminomethane.
A production method of a special coated seamless solid pure calcium wire for steelmaking deoxidization comprises the following steps:
s1, heating and melting metal calcium, and then casting the metal calcium into a metal calcium rod in vacuum;
s2, heating the metal calcium bar obtained in the step S1 to 370-380 ℃, and extruding the metal calcium bar into a calcium core layer;
s3, dissolving glycerol in water according to the formula of the antioxidant coating, heating to 60 ℃, sequentially adding disodium hydrogen phosphate and tris (hydroxymethyl) aminomethane, and uniformly mixing to obtain an antioxidant coating;
s4, uniformly coating the surface of the calcium core layer obtained in the step S2 with the antioxidant coating obtained in the step S3, and drying at 100 ℃ for 60min to form an antioxidant coating on the surface of the calcium core layer;
s5, coating the calcium core layer with the antioxidant coating obtained in the step S4 with a cold-rolled steel strip, and bending and rolling the calcium core layer into a tube blank;
s6, welding the tube blank obtained in the step S5 to obtain the special coated seamless solid pure calcium wire for steelmaking deoxidization.
Comparative example 3
A special coated seamless solid pure calcium wire for steelmaking deoxidization comprises a calcium core layer, an antioxidant coating and a seamless steel belt layer which are sequentially connected from inside to outside, wherein the diameter of the calcium core layer is 13.5mm, the thickness of the antioxidant coating is 0.39mm, the thickness of the seamless steel belt layer is 1.53mm,
the seamless steel belt layer is a cold-rolled steel belt, and the antioxidant coating comprises the following components in parts by weight:
13 parts of dopamine, 4.2 parts of polyimide, 2.5 parts of glycerol and 6.9 parts of tris (hydroxymethyl) aminomethane.
A production method of a special coated seamless solid pure calcium wire for steelmaking deoxidization comprises the following steps:
s1, heating and melting metal calcium, and then casting the metal calcium into a metal calcium rod in vacuum;
s2, heating the metal calcium bar obtained in the step S1 to 370-380 ℃, and extruding the metal calcium bar into a calcium core layer;
s3, dissolving glycerol in water according to the formula of the antioxidant coating, heating to 60 ℃, sequentially adding dopamine, polyimide and tris (hydroxymethyl) aminomethane, and uniformly mixing to obtain an antioxidant coating;
s4, uniformly coating the surface of the calcium core layer obtained in the step S2 with the antioxidant coating obtained in the step S3, and drying at 100 ℃ for 60min to form an antioxidant coating on the surface of the calcium core layer;
s5, coating the calcium core layer with the antioxidant coating obtained in the step S4 with a cold-rolled steel strip, and bending and rolling the calcium core layer into a tube blank;
s6, welding the tube blank obtained in the step S5 to obtain the special coated seamless solid pure calcium wire for steelmaking deoxidization.
Comparative example 4
A special coated seamless solid pure calcium wire for steelmaking deoxidization comprises a calcium core layer, an antioxidant coating and a seamless steel belt layer which are sequentially connected from inside to outside, wherein the diameter of the calcium core layer is 13.5mm, the thickness of the antioxidant coating is 0.39mm, the thickness of the seamless steel belt layer is 1.53mm,
the seamless steel belt layer is a cold-rolled steel belt, and the antioxidant coating comprises the following components in parts by weight:
13 parts of dopamine, 4.2 parts of polyimide and 5.1 parts of disodium hydrogen phosphate.
A production method of a special coated seamless solid pure calcium wire for steelmaking deoxidization comprises the following steps:
s1, heating and melting metal calcium, and then casting the metal calcium into a metal calcium rod in vacuum;
s2, heating the metal calcium bar obtained in the step S1 to 370-380 ℃, and extruding the metal calcium bar into a calcium core layer;
s3, dissolving disodium hydrogen phosphate in water according to the formula of the antioxidant coating, heating to 60 ℃, sequentially adding dopamine and polyimide, and uniformly mixing to obtain an antioxidant coating;
s4, uniformly coating the surface of the calcium core layer obtained in the step S2 with the antioxidant coating obtained in the step S3, and drying at 100 ℃ for 60min to form an antioxidant coating on the surface of the calcium core layer;
s5, coating the calcium core layer with the antioxidant coating obtained in the step S4 with a cold-rolled steel strip, and bending and rolling the calcium core layer into a tube blank;
s6, welding the tube blank obtained in the step S5 to obtain the special coated seamless solid pure calcium wire for steelmaking deoxidization.
1m samples were taken from the seamless calcium lines prepared in examples 1 to 5 and comparative examples 1 to 4, calcium content in the calcium line was measured on-line and after 3 days, respectively, and the results of the measurements are shown in Table 1, and the results were used for molten steel feed line treatment, respectively, wherein the molten steel was 120 tons of molten steel of SPEC steel grade, the feed line speed was 200m/min, and the yield of calcium in the molten steel was calculated.
TABLE 1 results of calcium loss and calcium yield measurements of the seamless calcium lines prepared in examples 1 to 5 and comparative examples 1 to 4
As can be seen from the above table, the seamless calcium wire prepared in examples 1-5 has good oxidation resistance, the calcium content is reduced less after being placed for 3 days, the calcium loss is less than 0.062%, the calcium loss is small, and meanwhile, the yield of calcium in steel is 43.72%, compared with the prior art, the oxidation resistance and the calcium yield of the seamless calcium wire are remarkably improved compared with the seamless calcium wire prepared in comparative examples 1-4, wherein an oxidation resistant coating is absent in comparative example 1, dopamine and polyimide are absent in comparative example 2, disodium hydrogen phosphate and glycerol are absent in comparative example 3, and tris (hydroxymethyl) aminomethane is absent in comparative example 4, which shows that the composition and the production method of the seamless calcium wire in the examples of the invention are matched, the oxidation resistance of the seamless calcium wire is remarkably improved, the calcium loss is reduced, the calcium yield is improved, the calcium treatment production cost is reduced, and the problem that the calcium content in the core wire is reduced due to easy oxidation of the surface of the calcium wire in the prior art is effectively solved, Low calcium yield and high calcium treatment cost.
In addition, the seamless calcium wire prepared in the examples 1-5 has no wire clamping, wire breaking and splashing in the molten steel wire feeding process, and the seamless calcium wire prepared by the method can effectively prevent liquid splashing.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The special coated seamless solid pure calcium wire for steelmaking deoxidization is characterized by comprising a calcium core layer, an antioxidant coating and a seamless steel belt layer which are sequentially connected from inside to outside, wherein the diameter of the calcium core layer is 12.3-14.7 mm, the thickness of the antioxidant coating is 0.32-0.45 mm, and the thickness of the seamless steel belt layer is 1.35-1.72 mm.
2. The special coated seamless solid pure calcium wire for steelmaking deoxidization as claimed in claim 1, wherein the antioxidant coating comprises the following components in parts by weight:
10-15 parts of dopamine, 2.5-5.9 parts of polyimide, 3.2-7.1 parts of disodium hydrogen phosphate, 1.5-3.6 parts of glycerol and 5.5-8.3 parts of tris (hydroxymethyl) aminomethane.
3. The special coated seamless solid pure calcium wire for steelmaking deoxidization as claimed in claim 2, wherein the antioxidant coating comprises the following components in parts by weight:
13 parts of dopamine, 4.2 parts of polyimide, 5.1 parts of disodium hydrogen phosphate, 2.5 parts of glycerol and 6.9 parts of tris (hydroxymethyl) aminomethane.
4. The coated seamless solid pure calcium wire special for steelmaking deoxidization as claimed in claim 2 or 3, characterized in that the seamless steel strip layer is made of cold-rolled steel strips.
5. A production method of a special coated seamless solid pure calcium wire for steelmaking deoxidization is characterized by comprising the following steps:
s1, heating and melting metal calcium, and then casting the metal calcium into a metal calcium rod in vacuum;
s2, heating the metal calcium rod obtained in the step S1, and extruding the metal calcium rod into a calcium core layer;
s3, according to the formula of the antioxidant coating of claim 2 or 3, dissolving glycerol in water, heating to 60 ℃, sequentially adding dopamine, polyimide, disodium hydrogen phosphate and tris (hydroxymethyl) aminomethane, and uniformly mixing to obtain an antioxidant coating;
s4, uniformly coating the anti-oxidation coating obtained in the step S3 on the surface of the calcium core layer obtained in the step S2, and forming an anti-oxidation coating on the surface of the calcium core layer after drying;
s5, coating the calcium core layer with the antioxidant coating obtained in the step S4 with a cold-rolled steel strip, and bending and rolling the calcium core layer into a tube blank;
s6, welding the tube blank obtained in the step S5 to obtain the special coated seamless solid pure calcium wire for steelmaking deoxidization.
6. The method for producing the steel-making deoxidation coating seamless solid pure calcium wire as claimed in claim 1, wherein the heating temperature in step S2 is 370-380 ℃.
7. The method for producing the steel-making deoxidation coating seamless solid pure calcium wire as claimed in claim 1, wherein the drying temperature in step S4 is 100 ℃ and the drying time is 60 min.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2779061B1 (en) * | 1998-04-14 | 2004-08-20 | Pharmatop | NOVEL METHOD FOR STABILIZING PHENOLIC COMPOUNDS AND THE PHARMACEUTICAL COMPOSITIONS THEREFROM |
| CN203960255U (en) * | 2014-07-15 | 2014-11-26 | 重庆科健冶金材料有限公司 | The pure calcium core-spun yarn of seamless welding |
| CN104923082A (en) * | 2015-05-27 | 2015-09-23 | 清华大学 | Hydrophilic antibacterial ultrafiltration membrane and preparation method for same |
| CN105440583A (en) * | 2015-12-04 | 2016-03-30 | 武汉理工大学 | Dopamine compound modified or coated nano particle modified polymer composite material and preparation method thereof |
| CN107245545A (en) * | 2017-05-24 | 2017-10-13 | 马鞍山市兴达冶金新材料有限公司 | A kind of production method of seamless pure calcium core-spun yarn |
| CN108570254A (en) * | 2018-05-28 | 2018-09-25 | 北京梦之墨科技有限公司 | A kind of preparation method of liquid metal nonstick layer and the utensil of non-sticky attached liquid metal |
-
2019
- 2019-04-27 CN CN201910346662.7A patent/CN110616292B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2779061B1 (en) * | 1998-04-14 | 2004-08-20 | Pharmatop | NOVEL METHOD FOR STABILIZING PHENOLIC COMPOUNDS AND THE PHARMACEUTICAL COMPOSITIONS THEREFROM |
| CN203960255U (en) * | 2014-07-15 | 2014-11-26 | 重庆科健冶金材料有限公司 | The pure calcium core-spun yarn of seamless welding |
| CN104923082A (en) * | 2015-05-27 | 2015-09-23 | 清华大学 | Hydrophilic antibacterial ultrafiltration membrane and preparation method for same |
| CN105440583A (en) * | 2015-12-04 | 2016-03-30 | 武汉理工大学 | Dopamine compound modified or coated nano particle modified polymer composite material and preparation method thereof |
| CN107245545A (en) * | 2017-05-24 | 2017-10-13 | 马鞍山市兴达冶金新材料有限公司 | A kind of production method of seamless pure calcium core-spun yarn |
| CN108570254A (en) * | 2018-05-28 | 2018-09-25 | 北京梦之墨科技有限公司 | A kind of preparation method of liquid metal nonstick layer and the utensil of non-sticky attached liquid metal |
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