CN105710347A - Anti-oxidation protection flux for composite roll and preparation method of flux - Google Patents
Anti-oxidation protection flux for composite roll and preparation method of flux Download PDFInfo
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- CN105710347A CN105710347A CN201610291381.2A CN201610291381A CN105710347A CN 105710347 A CN105710347 A CN 105710347A CN 201610291381 A CN201610291381 A CN 201610291381A CN 105710347 A CN105710347 A CN 105710347A
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- 230000004907 flux Effects 0.000 title claims abstract description 82
- 230000003064 anti-oxidating effect Effects 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims abstract description 45
- 238000005096 rolling process Methods 0.000 title abstract description 10
- 238000002360 preparation method Methods 0.000 title description 9
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000003647 oxidation Effects 0.000 claims abstract description 15
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 12
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 12
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 12
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 6
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000011521 glass Substances 0.000 claims description 36
- 239000002994 raw material Substances 0.000 claims description 27
- 230000001681 protective effect Effects 0.000 claims description 19
- 239000000126 substance Substances 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 10
- 239000006060 molten glass Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 1
- 238000009750 centrifugal casting Methods 0.000 abstract description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
- 229910052723 transition metal Inorganic materials 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000011160 research Methods 0.000 abstract description 2
- 238000004017 vitrification Methods 0.000 abstract description 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 238000002844 melting Methods 0.000 description 11
- 230000008018 melting Effects 0.000 description 11
- 239000002893 slag Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229910000997 High-speed steel Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 description 1
- CDMADVZSLOHIFP-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane;decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 CDMADVZSLOHIFP-UHFFFAOYSA-N 0.000 description 1
- RSCACTKJFSTWPV-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane;pentahydrate Chemical compound O.O.O.O.O.[Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 RSCACTKJFSTWPV-UHFFFAOYSA-N 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 238000009785 tube rolling Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Glass Compositions (AREA)
Abstract
The embodiment of the invention discloses an anti-oxidation protection flux for a composite roll. The flux comprises 20%-36% of SiO2, 0-5% of Al2O3, 10%-25% of CaO, 0-5% of MgO, 15%-35% of Na2O and 10%-25% of B2O3. Research proves that by increasing the content of CaO in the flux, the basicity of the anti-oxidation protection flux can be enhanced, thereby facilitating absorption of oxides generated by transition metal elements during a centrifugal casting process; and the content of B2O3 in the flux is increased, and thus the vitrification capability of the anti-oxidation protection flux with the high content of CaO is improved. Therefore, during centrifugal casting of the composite roll, air can be isolated for preventing oxidation, and the oxides generated by the transition metal elements during the centrifugal casting process can be absorbed. An excellent metallurgical binding layer can be formed between a working layer and a core of the composite roll, and thus the working layer of the composite roll is less prone to peeling during steel rolling.
Description
Technical Field
The invention relates to the field of roller manufacturing, in particular to an anti-oxidation protection flux for a composite roller and a preparation method thereof.
Background
The composite roll is widely applied to various rolling mills, such as a finish rolling work roll of a hot-rolled strip rolling mill, a back-up roll of a strip rolling mill, a middle and finish rolling work roll of a profile steel tube rolling mill, and the like. The composite roll body is composed of an outer layer (i.e., a working layer) and a core (including a roll neck portion), and the two portions are generally made of different materials.
The composite roller can be manufactured by adopting a centrifugal casting method, and molten steel of a working layer of the composite roller is cast into a centrifugal machine firstly, and then molten iron of a core is cast. At present, in order to ensure that a good metallurgical bonding layer is directly formed between a working layer and a core part of a composite roller, an anti-oxidation protective flux, generally commercially available O-shaped glass slag, is required to be sprayed after molten steel of the working layer is poured, and a glass film with a certain thickness is spread on the inner surface of the molten steel after the glass slag is melted at a high temperature to isolate air from oxidation. However, the working layer material of the composite roll of today generally incorporates a large amount of transition metal elements, such as Cr, V, Mn, W, Nb, etc., which are easily oxidized to form oxides during the centrifugal casting process. The glass slag can only isolate air to prevent oxidation and can not absorb the oxide generated by the transition metal element in the centrifugal casting process. Thus, the oxide formed is sandwiched between the working layer of the composite roll and the core, a good metallurgical bonding layer cannot be formed, and the working layer of the composite roll is easily peeled off during steel rolling.
Disclosure of Invention
The embodiment of the invention discloses an anti-oxidation protective flux for a composite roller and a preparation method thereof, which are used for solving the problems that a good metallurgical bonding layer cannot be formed between a working layer and a core part of the composite roller when the existing glass slag is used as the anti-oxidation protective flux, and the working layer of the composite roller is easy to peel off during steel rolling. The technical scheme is as follows:
firstly, the invention provides an anti-oxidation protection flux for a composite roller, which comprises the following chemical components in percentage by weight based on the anti-oxidation protection flux:
20-36% of SiO20-5% of Al2O310-25% of CaO, 0-5% of MgO and 15-35% of Na2O, and 10-25% of B2O3。
In a preferred embodiment of the present invention, CaO and SiO2The weight ratio of CaO/SiO is more than or equal to 0.52≤0.75。
In a preferred embodiment of the present invention, the oxidation-preventing protecting flux includes: CaO and SiO2The sum of the percentage content of CaO and SiO is more than or equal to 45 percent2≤55％。
In a preferred embodiment of the present invention, the oxidation-preventing protecting flux includes: 15-22% of B2O3。
In a preferred embodiment of the present invention, the particle diameter of the oxidation preventing flux is 6 mesh to 40 mesh.
The invention also provides a preparation method of the anti-oxidation protection flux, which comprises the following steps:
calculating the weight of each raw material required for preparing the anti-oxidation protection flux according to the weight percentage of chemical components contained in the anti-oxidation protection flux;
weighing the raw materials, grinding and mixing to obtain a batch mixture;
heating the batch to be molten to prepare molten glass;
and performing water quenching on the glass liquid to obtain a glass frit, drying, crushing and screening to obtain the anti-oxidation protection flux for the composite roller.
In a preferred embodiment of the present invention,
weighing the raw materials, respectively grinding the raw materials until the particle size is less than 40 meshes, and mixing to obtain the batch.
In a preferred embodiment of the present invention,
heating the batch to 1280-1350 ℃ at the heating rate of 10-15 ℃/min, and preserving the heat for 0.5-3 hours to clarify and homogenize the batch to obtain the molten glass.
In a preferred embodiment of the invention, the glass liquid is water quenched to obtain a glass frit, and the glass frit is dried and then ground to have a particle size of less than 6 meshes to 40 meshes, so as to obtain the anti-oxidation protection flux for the composite roller.
Researches show that the anti-oxidation protection flux for the composite roller improves the content of CaO, can increase the alkalinity of the anti-oxidation protection flux on one hand, and is beneficial to the absorption of oxides generated in the centrifugal casting process of transition metal elements; on the other hand, the high-temperature viscosity of the protective flux can be reduced, the flux can be rapidly spread, molten steel is covered, and the effect of isolating air is achieved. At the same time, improve B2O3On the one hand, the glass for protecting the flux by preventing oxidation by increasing the content of high CaOVitrification ability; on the other hand, the ability to dissolve transition metal oxides can be enhanced. Therefore, in the centrifugal casting process of the composite roll, the anti-oxidation protective flux for the composite roll can isolate air from oxidation and absorb oxides generated by transition metal elements in the centrifugal casting process. And a good metallurgical bonding layer can be formed between the composite roll working layer and the core part, and the composite roll working layer is not easy to peel off during steel rolling.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a graph showing the effect of the melting temperature and flow temperature tests of example 1 and comparative example.
Detailed Description
The invention provides an anti-oxidation protection flux for a composite roller, which comprises the following chemical components in percentage by weight based on the total weight of the anti-oxidation protection flux:
20-36% of SiO2Preferably 25-32% SiO20-5% of Al2O310-25% CaO, preferably 15-22% CaO, 0-5% MgO, 15-35% Na2O, and 10-25% of B2O3Preferably 15-22% of B2O3. Wherein CaO/SiO is more than or equal to 0.52(weight ratio) is less than or equal to 0.75, and CaO + SiO is less than or equal to 45%2(percentage content) is less than or equal to 55 percent. The anti-oxidation protection flux for the composite roller has the appearanceIs in a glass shape.
CaO and SiO2The total content is more than 55 percent, and the melting temperature of the anti-oxidation protection flux is higher; CaO and SiO2The total content is less than 45 percent, and the melting temperature of the anti-oxidation protection flux is lower. Since CaO has a strong fluxing action at high temperature and increases the melting temperature at low temperature, if CaO/SiO is used in the formulation2More than 0.75, high melting point of the protective flux, low melting speed at low temperature, low viscosity at high temperature, easy flowing at the inner surface of the working layer and no good coverage of the working layer. CaO/SiO2Less than 0.5, the alkalinity of the protective flux is small, and impurities cannot be absorbed; the high temperature viscosity is too high to cover the working layer well. Preferably, the anti-oxidation protection flux has a particle size of 6-40 meshes and an appearance of glass slag.
In a specific embodiment of the present invention, the anti-oxidation protection flux comprises the following chemical components by weight percentage based on the total weight of the anti-oxidation protection flux: 27-36% SiO22.5-5% of Al2O317-21% of CaO, 3.5-5% of MgO and 20-26% of Na2O, and 11-18% of B2O3Wherein, CaO/SiO is more than or equal to 0.52(weight ratio) is less than or equal to 0.75, and CaO + SiO is less than or equal to 45%2(percentage content) is less than or equal to 55 percent.
The anti-oxidation protection flux for the composite roller can be prepared by the following method:
calculating the weight of each raw material required for preparing the anti-oxidation protection flux according to the weight percentage of chemical components contained in the anti-oxidation protection flux;
weighing the raw materials, grinding, preferably grinding until the particle size is less than 40 meshes, and mixing to obtain a batch mixture;
heating the batch to be molten to prepare molten glass; preferably, the batch is heated to 1280-1350 ℃ at the heating rate of 10-15 ℃/min and is kept for 0.5-3 hours to be clarified and homogenized to prepare the molten glass. The particle size is less than 40 mesh, and is understood to mean a particle size that can pass through a 40 mesh screen.
And performing water quenching on the glass liquid to obtain glass frit, drying and grinding the glass frit, preferably grinding the glass frit to a particle size of 6-40 meshes, thus obtaining the anti-oxidation protection flux for the composite roller.
It should be noted that, in the above description of the method for preparing the anti-oxidation protection flux, if nothing is done, reference may be made to the conventional method in the field of glass preparation, the equipment required in the process of preparing the anti-oxidation protection flux, or the conventional equipment in the field of glass preparation, and the present invention is not described herein again.
Further, the chemical components contained in the oxidation protection flux for a composite roll may be introduced by raw materials commonly used in the field of glass production, and the raw materials corresponding to the respective chemical components are not limited herein, and may include, for example, but not limited to, various mineral raw materials into which the above-described oxide composition can be introduced, such as quartz sand, borax pentahydrate or borax decahydrate, or anhydrous borax, limestone, soda ash, feldspar, and the like.
The technical solutions of the present invention will be described below with reference to specific embodiments, and the described embodiments are only a part of embodiments of the present invention, but not all 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.
In the following examples, no particular reference is made to the percentages mentioned, which are by weight.
TABLE 1 chemical component contents of anti-oxidation protecting flux for each composite roll in examples 1 to 6
The term "other" in table 1 can be understood as other impurity-like components introduced from the raw materials, and the specific chemical composition of such components does not need to be limited in the present invention, and generally does not affect the implementation of the technical solution of the present invention.
Example 1
According to the chemical component contents in example 1 in table 1, 100kg of the oxidation preventing protecting flux for the composite roll was prepared.
The proportions of the raw materials are calculated as shown in Table 2 below.
TABLE 2 proportions of the raw materials required in example 1
Weighing the raw materials shown in the table 2, respectively grinding and sieving through a 40-mesh sieve, and then mixing to obtain a batch; and heating the batch to 1350 ℃ at the heating rate of 12 ℃/min, and preserving heat for 1 hour to clarify and homogenize the batch to obtain the molten glass. And performing water quenching on the glass liquid to obtain glass frit, drying and grinding the glass frit to a particle size of 40 meshes to obtain the anti-oxidation protection flux for the composite roller.
Example 2
According to the chemical component contents in example 2 in table 1, 100kg of the oxidation preventing protecting flux for the composite roll was prepared.
The proportions of the respective raw materials are calculated as shown in table 3 below.
TABLE 3 proportions of the raw materials required in example 2
Example 3
According to the chemical component contents in example 3 in table 1, 100kg of the oxidation preventing protecting flux for the composite roll was prepared.
The proportions of the respective raw materials are calculated as shown in table 4 below.
TABLE 4 proportions of the raw materials required in example 3
Example 4
According to the chemical component contents in example 4 in table 1, 100kg of the oxidation preventing protecting flux for the composite roll was prepared.
The proportions of the respective raw materials are calculated as shown in table 5 below.
TABLE 5 proportions of the raw materials required in example 4
Example 5
According to the chemical component contents in example 5 in table 1, 100kg of the oxidation preventing protecting flux for the composite roll was prepared.
The proportions of the respective raw materials are calculated as shown in table 6 below.
TABLE 6 proportions of the respective raw materials required in example 5
Example 6
According to the chemical component contents in example 6 in table 1, 100kg of the oxidation preventing protecting flux for the composite roll was prepared.
The proportions of the respective raw materials are calculated as shown in table 7 below.
TABLE 7 proportions of the respective raw materials required in example 6
Test and results
1. Melting temperature and flow temperature determination
The anti-oxidation protective flux prepared in examples 1 to 6 and the commercially available O-type glass slag anti-oxidation protective flux were measured; the results are shown in Table 8; wherein,
the test method comprises the following steps: the protective flux was ground into fine powder, and cylindrical test specimens each having a diameter and a height of 3mm were prepared in a sample preparation machine. Heating in a tube furnace, and defining the temperature of the hemisphere point or melting temperature when the height of the cylinder is reduced to 1/2 of the original height along with the temperature increase; when the cylinder height dropped to 1/5, the flow temperature was defined.
The melting temperature is high, so that the protective flux cannot be melted rapidly, and slag inclusion is easily caused. The flowing temperature is higher, the protective flux can not spread on the surface of the molten steel, and the covering performance is poor. Commercially available O-type glass slag (chemical component content: 46% SiO)24% of Al2O34% of CaO, 33% ofNa2O, and 9% of B2O3And others, the balance. ) In the embodiment, the melting temperature of the anti-oxidation protective flux is close to that of O-shaped glass slag, and the flowing temperature of the anti-oxidation protective flux is obviously lower than that of the O-shaped glass slag. Is particularly suitable for the centrifugal casting of medium and large high-speed steel rolls. In the centrifugal casting process of medium and large high-speed steel rolls, the area of the protective flux which needs to be covered by flowing is large, the flowing temperature of O-shaped glass is high, the flowing performance is poor, and complete covering is not easy. The anti-oxidation protective flux has low flowing temperature and good fluidity, can cover molten steel to form a glass film, and plays a role in isolating air. FIG. 1 is a graph showing the results of tests conducted in example 1 of the present invention and comparative example; wherein 1 is inventive example 1 and 2 is comparative example; as shown in FIG. 1, at 900 ℃, the spreading area of the product of the invention is larger than that of the comparative example, which shows that the product of the invention has good fluidity.
In addition, compared with the prior O-shaped glass slag, the protective flux provided by the invention adds CaO and B2O3The content of the antioxidant flux can be increased by increasing the content of CaO, so that the alkalinity of the antioxidant flux can be increased, the absorption of oxides generated in the centrifugal casting process of transition metal elements is facilitated, and the content of B is increased2O3The content of (3) can increase the vitrification capability of the anti-oxidation protection flux at the high CaO content.
TABLE 8 measurement results of melting temperature and flow temperature
2. The composite roller manufactured by the flux of the invention carries out ultrasonic flaw detection on the combined layer of the composite roller according to the requirements of GB/T1503 and 2008 cast steel roller, GB/T1504 and 2008 cast iron roller and the like, and the part of the combined layer has no single or dense equivalent defect and meets the national standard regulation.
The anti-oxidation protection flux for the composite roller and the preparation method thereof are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its central concept. It should be noted that it would be apparent to those skilled in the art that various changes and modifications can be made in the invention without departing from the principles of the invention, and such changes and modifications are intended to be covered by the appended claims.
Claims (9)
1. An anti-oxidation protection flux for a composite roller is characterized by comprising the following chemical components in percentage by weight based on the anti-oxidation protection flux:
20-36% of SiO20-5% of Al2O310-25% of CaO, 0-5% of MgO and 15-35% of Na2O, and 10-25% of B2O3。
2. The oxidation-preventing protective flux according to claim 1, wherein the flux is used in a form of a fluxThen, CaO and SiO2The weight ratio of CaO/SiO is more than or equal to 0.52≤0.75。
3. The oxidation protection flux according to claim 1, wherein CaO and SiO are added2The sum of the percentage content of CaO and SiO is more than or equal to 45 percent2≤55％。
4. An oxidation prevention protection flux according to any one of claims 1 to 3, comprising: 15-22% of B2O3。
5. The oxidation-preventing protecting flux according to claim 1, wherein a particle diameter of the oxidation-preventing protecting flux is 6 mesh to 40 mesh.
6. The method of preparing an oxidation-preventing protecting flux according to claims 1 to 5, comprising:
calculating the weight of each raw material required for preparing the anti-oxidation protection flux according to the weight percentage of chemical components contained in the anti-oxidation protection flux;
weighing the raw materials, grinding and mixing to obtain a batch mixture;
heating the batch to be molten to prepare molten glass;
and performing water quenching on the glass liquid to obtain a glass frit, drying, crushing and screening to obtain the anti-oxidation protection flux for the composite roller.
7. The method of claim 6,
weighing the raw materials, respectively grinding the raw materials until the particle size is less than 40 meshes, and mixing to obtain the batch.
8. The method of claim 6,
heating the batch to 1280-1350 ℃ at the heating rate of 10-15 ℃/min, and preserving the heat for 0.5-3 hours to clarify and homogenize the batch to obtain the molten glass.
9. The method of claim 6,
and performing water quenching on the glass liquid to obtain glass frit, drying and crushing the glass frit to obtain the anti-oxidation protective flux for the composite roller, wherein the particle size of the glass frit is 6-40 meshes.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398331A (en) * | 2016-08-31 | 2017-02-15 | 中钢集团邢台机械轧辊有限公司 | Centrifugal compound high-speed steel roller end surface thermal treatment coating, and preparation method and application method thereof |
| CN109622907A (en) * | 2019-02-27 | 2019-04-16 | 新乡市海山机械有限公司 | A kind of anti-oxidation additive of volatilization prevention for chromium-bronze centrifugal casting |
| CN110421149A (en) * | 2019-08-22 | 2019-11-08 | 东营市泰达石油装备有限责任公司 | Double metallic composite material and its preparation method and application, abrasion-proof accessories, winning equipment |
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| CN101058684A (en) * | 2006-04-21 | 2007-10-24 | 中国科学院过程工程研究所 | High temperature common mild steel anti-oxidation coating and application thereof |
| CN101472693A (en) * | 2006-06-22 | 2009-07-01 | Posco公司 | Mold flux and continuous casting method using the same |
| CN101250462A (en) * | 2008-03-28 | 2008-08-27 | 西北有色金属研究院 | Rare metal high-heat anti-oxidation lubricating paint and preparation method thereof |
| WO2011090218A1 (en) * | 2010-01-21 | 2011-07-28 | 新日本製鐵株式会社 | Mould powder for continuous casting of steel |
| CN103803800A (en) * | 2013-12-28 | 2014-05-21 | 华中科技大学 | Titanium alloy protective coating and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106398331A (en) * | 2016-08-31 | 2017-02-15 | 中钢集团邢台机械轧辊有限公司 | Centrifugal compound high-speed steel roller end surface thermal treatment coating, and preparation method and application method thereof |
| CN106398331B (en) * | 2016-08-31 | 2019-12-03 | 中钢集团邢台机械轧辊有限公司 | A kind of centrifugal compound high-speed steel roll end face is heat-treated coating and preparation method thereof and application method |
| CN109622907A (en) * | 2019-02-27 | 2019-04-16 | 新乡市海山机械有限公司 | A kind of anti-oxidation additive of volatilization prevention for chromium-bronze centrifugal casting |
| CN110421149A (en) * | 2019-08-22 | 2019-11-08 | 东营市泰达石油装备有限责任公司 | Double metallic composite material and its preparation method and application, abrasion-proof accessories, winning equipment |
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