CN115747622A - Wear-resistant steel ball and preparation method thereof - Google Patents
Wear-resistant steel ball and preparation method thereof Download PDFInfo
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- CN115747622A CN115747622A CN202211413357.3A CN202211413357A CN115747622A CN 115747622 A CN115747622 A CN 115747622A CN 202211413357 A CN202211413357 A CN 202211413357A CN 115747622 A CN115747622 A CN 115747622A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 128
- 239000010959 steel Substances 0.000 title claims abstract description 128
- 238000002360 preparation method Methods 0.000 title abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 53
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 53
- 150000001875 compounds Chemical class 0.000 claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000002994 raw material Substances 0.000 claims abstract description 33
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 28
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 28
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 27
- 229910052742 iron Inorganic materials 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 229910000616 Ferromanganese Inorganic materials 0.000 claims abstract description 13
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims abstract description 13
- 229910000805 Pig iron Inorganic materials 0.000 claims abstract description 13
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 238000003723 Smelting Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000013329 compounding Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 13
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 8
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 229910052684 Cerium Inorganic materials 0.000 claims description 6
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052746 lanthanum Inorganic materials 0.000 claims description 6
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 6
- 229920001467 poly(styrenesulfonates) Polymers 0.000 claims description 5
- 229940006186 sodium polystyrene sulfonate Drugs 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000002195 synergetic effect Effects 0.000 abstract description 9
- 238000000465 moulding Methods 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 11
- 239000002131 composite material Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 125000004432 carbon atom Chemical group C* 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000005411 Van der Waals force Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
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- 238000011161 development Methods 0.000 description 2
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- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000007550 Rockwell hardness test Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
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- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
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- 235000009566 rice Nutrition 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- Carbon And Carbon Compounds (AREA)
Abstract
The application relates to the technical field of steel balls, and particularly discloses a wear-resistant steel ball and a preparation method thereof. The wear-resistant steel ball comprises the following raw materials in parts by weight: 40-60 parts of shaving iron, 20-35 parts of pig iron, 5-10 parts of ferrosilicon, 5-10 parts of ferromanganese, 2-8 parts of a compound and 1-5 parts of a rare earth mixture, wherein the compound is prepared by compounding graphene and carbon nano tubes; the preparation method comprises the following steps: mixing the shaving iron, the pig iron, the ferrosilicon, the ferromanganese, the compound and the rare earth mixture, smelting, then pouring into a mould for molding, and cooling to obtain the wear-resistant steel ball. The wear-resistant steel ball has the advantage of improving the wear resistance of the steel ball through the synergistic effect of the raw materials.
Description
Technical Field
The application relates to the technical field of steel balls, in particular to a wear-resistant steel ball and a preparation method thereof.
Background
Along with the gradual depletion of rich ore resource reserves in the world and the increasing demand of the rich ore resource reserves, the treatment capacity of processing lean ores into concentrates through ore dressing is increased, meanwhile, the development of the ore dressing industry is continuously evolved towards a more optimized processing flow, and the obvious trend is to adopt a large semi-autogenous mill flow to replace the traditional middle flows of middle breaking, fine breaking and the like, so that the flow is simplified, the investment cost of infrastructure is reduced, the production cost is reduced, the efficiency is improved, and the development trend becomes a large mine at home and abroad.
As a main grinding medium in the ball mill, the steel balls play a role in crushing and grinding materials in the production process. The steel balls are classified into grinding steel balls, forging steel balls, casting steel balls according to the production and processing technology, and bearing steel balls, stainless steel balls, carbon steel balls, copper bearing steel balls, alloy balls and the like according to the processing materials. As the steel balls need to crush and grind materials, the steel balls are abraded more after being used for a long time, and the grinding effect is influenced.
Disclosure of Invention
In order to improve the wear resistance of the steel ball, the application provides a wear-resistant steel ball and a preparation method thereof.
In a first aspect, the application provides a wear-resistant steel ball, which adopts the following technical scheme:
a wear-resistant steel ball comprises the following raw materials in parts by weight: 40-60 parts of shaving iron, 20-35 parts of pig iron, 5-10 parts of ferrosilicon, 5-10 parts of ferromanganese, 2-8 parts of a compound and 1-5 parts of a rare earth mixture, wherein the compound is prepared by compounding graphene and carbon nano tubes.
By adopting the technical scheme, the wear-resistant steel ball not only improves the hardness of the steel ball, but also reduces the abrasiveness of the steel ball through the synergistic effect of the raw materials, so that the wear resistance of the steel ball is improved, wherein the Rockwell hardness of the steel ball is 64.2-69.5, and the abrasiveness of the steel ball is 0.075-0.127g.
The flake iron and the pig iron are basic components of the steel ball, and the ferrosilicon and the ferromanganese are ferroalloy added into the steel ball, so that the wear resistance of the steel ball can be improved. The compound is prepared by compounding graphene and carbon nano tubes, wherein the graphene is SP 2 The hybridized and connected carbon atoms are tightly stacked to form a material with a single-layer two-dimensional honeycomb lattice structure, the graphene is one of the materials with the highest known strength, has good toughness and wear resistance, and can improve the wear resistance of the steel ball when being applied to the raw materials of the steel ball. The carbon nano tube is a coaxial circular tube with several layers to tens of layers formed by carbon atoms arranged in a hexagon shape, and has good mechanical property, high strength and friction resistance. The wear resistance of the steel ball can be further improved through the synergistic effect between the graphene and the carbon nano tube.
Preferably, the method comprises the following steps: the feed comprises the following raw materials in parts by weight: 45-52 parts of shaving iron, 24-30 parts of pig iron, 6-8 parts of ferrosilicon, 6-8 parts of ferromanganese, 4-7 parts of compound and 2-4 parts of rare earth mixture.
By adopting the technical scheme, the doping amount of the mixture of the wood shaving iron, the pig iron, the ferrosilicon, the ferromanganese, the compound and the rare earth is optimized, so that the raw materials can play a better role, and the wear resistance of the steel ball is further improved.
Preferably, the method comprises the following steps: the compound is prepared by the following method: putting graphene into water, adding sodium polystyrene sulfonate, performing ultrasonic dispersion, adding carbon nanotubes, mixing uniformly, filtering, washing and drying to obtain the compound.
Further, the compound is prepared by the following method: putting graphene into water, adding sodium polystyrene sulfonate, performing ultrasonic dispersion for 20-40min, adding carbon nanotubes, stirring for 10-20min, filtering, washing with water for 3-5 times, and drying to obtain a compound;
wherein the addition amount of water in each 1g of graphene is 8-12mL, and the addition amount of sodium polystyrene sulfonate in each 1g of graphene is 2-4mL.
By adopting the technical scheme, the compound is prepared by the preparation method, the graphene and the carbon nano tube are facilitated to play a role, and the wear resistance of the steel ball is further improved through the synergistic effect of the graphene and the carbon nano tube.
Preferably, the method comprises the following steps: the weight ratio of the graphene to the carbon nano tube is 1: (2-4).
The addition amount of the carbon nano tube is too small, so that the better effect of improving the wear resistance of the steel ball cannot be achieved; the addition amount of the carbon nanotubes is too large, and the carbon nanotubes are easy to agglomerate, so that the carbon nanotubes have poor functions and cannot play a better synergistic effect with graphene. By adopting the technical scheme, when the weight ratio of the graphene to the carbon nano tube is in the range, the graphene and the carbon nano tube can play a better synergistic effect, and the wear resistance of the steel ball is further improved.
Preferably, the method comprises the following steps: the carbon nanotubes are pre-treated prior to use using the following method: putting the carbon nano tube into an ethanol solution, performing ultrasonic dispersion, adding sodium dodecyl benzene sulfonate, uniformly mixing, filtering, washing and drying to obtain the pretreated carbon nano tube.
Further, the carbon nanotubes are pretreated by the following method before use: putting the carbon nano tube into an ethanol solution, performing ultrasonic dispersion for 10-20min, adding sodium dodecyl benzene sulfonate, stirring for 5-10min, filtering, washing with water for 3-5 times, and drying to obtain a pretreated carbon nano tube;
wherein, the addition amount of the ethanol solution in each 1g of the carbon nano tube is 6-8mL, the mass fraction of the ethanol solution is 20-40%, and the weight ratio of the carbon nano tube to the sodium dodecyl benzene sulfonate is 1: (0.3-0.5).
By adopting the technical scheme, stronger Van der Waals force exists among the carbon nano tubes, self agglomeration is easy to generate, the effect is influenced, the surface Van der Waals force is reduced by utilizing the surfactant to pretreat the carbon nano tubes, the dispersity is improved, the carbon nano tubes can play a role, and the wear resistance of the steel ball is further improved.
Preferably, the method comprises the following steps: the rare earth mixture comprises rare earth cerium and rare earth lanthanum, and the weight ratio of the rare earth cerium to the rare earth lanthanum is 1:1.
By adopting the technical scheme, the rare earth cerium and the rare earth lanthanum have the effect of improving the wear resistance of the steel ball, and the wear resistance of the steel ball can be further improved through the synergistic effect between the rare earth cerium and the rare earth lanthanum.
Preferably, the method comprises the following steps: the wear-resistant steel ball also comprises 2-6 parts by weight of silicon nitride.
By adopting the technical scheme, the silicon nitride has the advantages of high hardness, high strength, wear resistance and aging resistance because the covalent bond force between silicon atoms and nitrogen atoms is strong in the result of the silicon nitride, and the wear resistance of the steel ball can be further improved by applying the silicon nitride to the raw material of the steel ball.
In a second aspect, the application provides a method for preparing a wear-resistant steel ball, which adopts the following technical scheme:
a preparation method of a wear-resistant steel ball comprises the following steps:
uniformly mixing the shaving iron, the pig iron, the ferrosilicon, the ferromanganese, the compound and the rare earth mixture, smelting, then pouring into a mould for forming, and cooling to obtain the wear-resistant steel ball.
Further, the preparation method of the wear-resistant steel ball comprises the following steps:
uniformly mixing the shaving iron, the pig iron, the ferrosilicon, the ferromanganese, the compound and the rare earth mixture, smelting at 1300-1500 ℃, pouring into a mould for forming for 10-20min, and naturally cooling to obtain the wear-resistant steel ball.
Preferably, the method comprises the following steps: when the rare earth mixture is added, silicon nitride is added together.
By adopting the technical scheme, the wear-resistant steel ball is prepared by the preparation method, the raw materials are uniformly mixed at first, and then are smelted and cooled for forming, so that the raw materials can better play a role, and the wear resistance of the steel ball is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. since the graphene and the carbon nano tube are adopted as the compound to be applied to the raw materials of the steel ball in the application, the graphene is SP 2 The hybridized and connected carbon atoms are tightly stacked to form a material with a single-layer two-dimensional honeycomb lattice structure, graphene is one of the materials with the highest known strength, has good toughness and wear resistance, and can improve the wear resistance of the steel ball when being applied to the raw materials of the steel ball. The carbon nano tube is a coaxial circular tube with several to tens of layers formed by carbon atoms arranged in a hexagon shape, and has good mechanical property, high strength and friction resistance. Through the synergistic effect of the two components, the hardness of the steel ball is improved, and the abrasiveness of the steel ball is reduced, so that the abrasive resistance of the steel ball is improved, the Rockwell hardness of the steel ball can reach 69.5, and the abrasiveness can be reduced to 0.075g.
2. In the application, the sodium dodecyl benzene sulfonate is preferably adopted to pretreat the carbon nanotubes, so that the agglomeration phenomenon among the carbon nanotubes can be reduced, the dispersion of the carbon nanotubes is facilitated, the carbon nanotubes can be conveniently and better played, and the wear resistance of the steel ball is further improved.
Detailed Description
The present application is described in further detail below with reference to specific contents.
Raw materials
The iron content in the iron shavings is 60%; the iron content in the pig iron is 95 percent; the average grain size of the ferrosilicon is 1-3mm, and the iron content is 75 percent; the average grain diameter of ferromanganese is 10-20mm, and the iron content is 24%.
Preparation example
Preparation example 1
A composite prepared by the following method:
putting 2kg of graphene into 20L of water, adding 6L of sodium polystyrene sulfonate, performing ultrasonic dispersion for 30min, adding 4kg of carbon nanotubes, stirring for 15min, filtering, washing for 5 times with water, and drying to obtain the compound.
Preparation example 2
A composite, which is different from preparation example 1 in the addition amount of carbon nanotubes in the composite, and the addition amount of carbon nanotubes in preparation example 2 was 6kg.
Preparation example 3
A composite, which is different from preparation example 1 in the addition amount of carbon nanotubes in the composite, and 8kg in the addition amount of carbon nanotubes in preparation example 3.
Examples
Example 1
The raw material proportion of the wear-resistant steel ball is shown in table 1.
A preparation method of a wear-resistant steel ball comprises the following steps:
uniformly mixing the wood shaving iron, the pig iron, the ferrosilicon and the ferromanganese, the compound prepared in the preparation example 1 and the rare earth mixture, smelting at 1400 ℃, pouring into a mould for forming for 15min, and naturally cooling to obtain the wear-resistant steel ball.
Examples 2 to 5
The wear-resistant steel ball is different from the wear-resistant steel ball in the embodiment 1 in the raw material ratio of the compound, and the raw material ratio is shown in a table 1.
TABLE 1 EXAMPLES 1-5 blending amounts (unit: kg) of each raw material in wearable steel balls
Examples 6 to 8
A wear-resistant steel ball is different from the steel ball in example 5 in the raw material ratio of the composite, which is shown in Table 2.
TABLE 2 EXAMPLES 6-8 blending amounts (unit: kg) of respective raw materials in wearable Steel ball
Example 9
A wear resistant steel ball is distinguished from example 7 in that the origin of the compound is different, and the compound of example 9 is prepared by using preparation example 2.
Example 10
A wear resistant steel ball is different from the steel ball in example 7 in the source of the compound, and the compound in example 10 is prepared by the preparation example 3.
Example 11
A wear resistant steel ball differing from example 9 in that the carbon nanotubes in the composite were pretreated before use by the following method: putting the carbon nano tube into an ethanol solution with the mass fraction of 30%, performing ultrasonic dispersion for 15min, adding sodium dodecyl benzene sulfonate, stirring for 8min, filtering, washing for 5 times by using water, and drying to obtain a pretreated carbon nano tube; wherein, the addition amount of the ethanol solution in each 1g of the carbon nano tube is 7mL, and the weight ratio of the carbon nano tube to the sodium dodecyl benzene sulfonate is 1.
Examples 12 to 14
A wear-resistant steel ball is different from the steel ball in embodiment 11 in that the raw material of the steel ball also comprises silicon nitride, the raw material proportion is shown in Table 3, and the preparation method is different, namely, when a rare earth mixture is added, the silicon nitride is added together.
TABLE 3 EXAMPLES 12 to 14 blending amounts (unit: kg) of respective raw materials in wearable Steel balls
Comparative example
Comparative example 1
A wear resistant steel ball is different from the steel ball in example 1 in that no compound is added to the raw material of the ball.
Comparative example 2
A wear-resistant steel ball, which is different from embodiment 1 in that the compound in the raw material of the wear-resistant steel ball is replaced with graphene in equal amount.
Comparative example 3
A wear-resistant steel ball is different from the steel ball in embodiment 1 in that the compound in the raw material of the wear-resistant steel ball is replaced with carbon nanotubes in equal amount.
Performance test
The wear-resistant steel balls in examples 1 to 14 and comparative examples 1 to 3 were subjected to the following properties of rockwell hardness and abrasion resistance:
rockwell hardness: the hardness of the steel balls was measured according to GB/T230.1-2004 "test method for Metal Rockwell hardness test part 1", and the test results are shown in Table 4.
Abrasion property: the abrasion resistance of the steel balls was measured in accordance with GB/T12444.1-1990 Metal abrasion test method MM type abrasion test, and the results are shown in Table 4.
TABLE 4 test results
The wear-resistant steel ball improves the hardness of the steel ball and reduces the abrasiveness of the steel ball through the synergistic effect of the raw materials, so that the wear resistance of the steel ball is improved, wherein the Rockwell hardness of the steel ball is 64.2-69.5, and the abrasiveness of the steel ball is 0.075-0.127g.
As can be seen by combining example 1 and comparative examples 1 to 3, the Rockwell hardness of the steel ball in example 1 is 64.2, the abradability is 0.127g, which is better than that in comparative examples 1 to 3, indicating that it is more appropriate to add the compound to the raw material of the steel ball, and that the addition of the compound is more appropriate by using graphene and carbon nanoThe compound compounded by the rice pipes is more suitable, wherein the graphene is SP 2 The hybridized and connected carbon atoms are tightly stacked to form a material with a single-layer two-dimensional honeycomb lattice structure, the graphene is one of the materials with the highest known strength, has good toughness and wear resistance, and can improve the wear resistance of the steel ball when being applied to the raw materials of the steel ball. The carbon nano tube is a coaxial circular tube with several layers to tens of layers formed by carbon atoms arranged in a hexagon shape, and has good mechanical property, high strength and friction resistance. The steel ball has better Rockwell hardness, and the wearability of the steel ball is reduced, so that the wearability of the steel ball is improved.
It can be seen from the combination of examples 1 to 5 that the Rockwell hardness of the steel ball in example 5 is 67.3, and the abrasion resistance is 0.097g, which is superior to other examples, and it is shown that the addition amount of the compound in the steel ball raw material in example 5 is more appropriate, so that the steel ball has a better Rockwell hardness, and the abrasion resistance of the steel ball is reduced, thereby improving the abrasion resistance of the steel ball.
In the combination of examples 6-8, it can be seen that the raw materials of the steel ball have little influence on the performance of the steel ball except for the composite material.
It can be seen from the combination of example 7 and examples 9-10 that the Rockwell hardness of the steel ball in example 9 is 68.2, and the abradability is 0.086g, which is superior to other examples, indicating that the composite prepared by preparation example 2 is more suitable, not only the steel ball has better Rockwell hardness, but also the abradability of the steel ball is reduced, thereby improving the abradability of the steel ball.
It can be seen from the combination of example 9 and example 11 that the rockwell hardness of the steel ball in example 11 is 68.5, and the abradability is 0.083g, which is superior to example 11, and indicates that the carbon nanotubes in the composite are more suitably pretreated with sodium dodecylbenzenesulfonate before use, and relatively strong van der waals force exists between the carbon nanotubes, so that self-aggregation is easily generated, and the effects are easily exerted.
It can be seen from the combination of examples 11 and 12 to 14 that the rockwell hardness of the steel ball in example 13 is 69.5 and the abrasion resistance is 0.075g, which indicates that the addition of silicon nitride to the raw material of the steel ball is more suitable, and the addition amount of silicon nitride in example 13 is more suitable, and the result of silicon nitride is that the covalent bond force between silicon atoms and nitrogen atoms is stronger, so that the silicon nitride has the advantages of high hardness, high strength, wear resistance and aging resistance, and not only can make the steel ball have better rockwell hardness, but also can reduce the abrasion resistance of the steel ball, thereby improving the abrasion resistance of the steel ball.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of the present application is not limited by the embodiments of the present application, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. A wear-resistant steel ball is characterized in that: the feed comprises the following raw materials in parts by weight: 40-60 parts of shaving iron, 20-35 parts of pig iron, 5-10 parts of ferrosilicon, 5-10 parts of ferromanganese, 2-8 parts of a compound and 1-5 parts of a rare earth mixture, wherein the compound is prepared by compounding graphene and carbon nano tubes.
2. A wear resistant steel ball according to claim 1, characterized in that: the feed comprises the following raw materials in parts by weight: 45-52 parts of shaving iron, 24-30 parts of pig iron, 6-8 parts of ferrosilicon, 6-8 parts of ferromanganese, 4-7 parts of compound and 2-4 parts of rare earth mixture.
3. A wear resistant steel ball in accordance with claim 1, wherein: the compound is prepared by the following method: putting graphene into water, adding sodium polystyrene sulfonate, performing ultrasonic dispersion, adding carbon nanotubes, mixing uniformly, filtering, washing and drying to obtain the compound.
4. A wear resistant steel ball according to claim 3 wherein: the weight ratio of the graphene to the carbon nano tube is 1: (2-4).
5. A wear resistant steel ball in accordance with claim 1, wherein: the carbon nanotubes are pre-treated prior to use using the following method: putting the carbon nano tube into an ethanol solution, performing ultrasonic dispersion, adding sodium dodecyl benzene sulfonate, uniformly mixing, filtering, washing and drying to obtain the pretreated carbon nano tube.
6. A wear resistant steel ball according to claim 1, characterized in that: the rare earth mixture comprises rare earth cerium and rare earth lanthanum, and the weight ratio of the rare earth cerium to the rare earth lanthanum is 1:1.
7. A wear resistant steel ball according to claim 1, characterized in that: the wear-resistant steel ball also comprises 2-6 parts by weight of silicon nitride.
8. A method of manufacturing a wear resistant steel ball according to any one of claims 1 to 6, characterized by the steps of:
uniformly mixing the shaving iron, the pig iron, the ferrosilicon, the ferromanganese, the compound and the rare earth mixture, smelting, then pouring into a mould for forming, and cooling to obtain the wear-resistant steel ball.
9. The method for preparing a wear-resistant steel ball according to claim 8, wherein: when the rare earth mixture is added, silicon nitride is added together.
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