CN102605232B - Nanometer alloy cast iron grinding ball and preparation method thereof - Google Patents
Nanometer alloy cast iron grinding ball and preparation method thereof Download PDFInfo
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- CN102605232B CN102605232B CN201110424679.3A CN201110424679A CN102605232B CN 102605232 B CN102605232 B CN 102605232B CN 201110424679 A CN201110424679 A CN 201110424679A CN 102605232 B CN102605232 B CN 102605232B
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Abstract
The invention discloses a nanometer alloy cast iron grinding ball and a preparation method thereof. The nanometer alloy cast iron grinding ball comprises the raw materials in percentage by weight: 2.85-3.65% of C, 0.5-1.2% of Si, 0.7-1.5% of Mn, less than or equal to 0.01% of S, less than or equal to 0.01% of P, 1.0-3.0% of Cr and the balance of Fe. The preparation method comprises the steps of mixing and smelting the raw materials, then adding 0.02-0.03% of B4C and 0.05-0.12% of Re for fully mixing with molten steel, pouring into the cavity of a metal mold at 1300 DEG C-1350 DEG C, demolding and stamping at 1200 DEG C, conducting oil quenching, and tempering to obtain the finished product. According to the invention, the nanometer materials B4C and Re are evenly mixed with metal powder of materials of the cast iron grinding ball, so that the hardness and impact toughness of the cast iron grinding ball are improved, and the unit consumption of the grinding ball is reduced by 30%.
Description
Technical field
The present invention relates to a kind of nano alloy cast iron grinding balls and preparation method thereof, belong to ball mill part field.
Background technology
At present, in the metal melt of cast-iron grinding ball, add nano material, can roll up the number of nucleus in melt, and part becomes type core core ，Shi dense structure, grain refining; Meanwhile, part nano particle becomes particle in metal melt, but because nano material crystal grain is tiny, directly adds membership and partly swim in metal melt surface, can not reach homodisperse effect.
Summary of the invention
In order to improve hardness and the impelling strength of cast-iron grinding ball, thereby extend abrading-ball work-ing life, the object of the present invention is to provide a kind of nano alloy cast iron grinding balls and preparation method thereof.
The present invention adopts following technical scheme to achieve these goals:
Nano alloy cast iron grinding balls, is characterized in that the weight percent of its constitutive material is: C 2.85-3.65%, Si 0.5-1.2%, Mn 0.7-1.5%, S≤0.01%, P≤0.01%, Cr 1.0-3.0%, B
4c 0.02-0.03%, Re 0.05-0.12%, all the other compositions are Fe.
The preparation method of described nano alloy cast iron grinding balls, is characterized in that comprising the following steps:
(1) by the weight percent of constitutive material, take C, Si, Mn S, P, Cr and Fe, then add medium-frequency induction furnace melting, come out of the stove to 1400 ℃-1450 ℃, put into steel teeming ladle;
(2) by the weight percent of constitutive material, take B
4c and Re, add in steel teeming ladle, and heating makes B
4c and Re fully mix with molten steel, and 1300 ℃-1350 ℃ are poured in metal die die cavity, and 1200 ℃ go out forging dies, oil quenching, and tempering obtains finished product, controls oil quenching temperature>=850 ℃.
Beneficial effect of the present invention:
The present invention is by nano material B
4c and Re evenly mix with the metal-powder of cast-iron grinding ball material, thereby have improved hardness and the impelling strength of cast-iron grinding ball, and abrading-ball unit consumption declines 30%.
Embodiment
Embodiment 1: nano alloy cast iron grinding balls, the weight percent of its constitutive material is: C 2.85-3.65%, Si 0.5-1.2%, Mn 0.7-1.5%, S≤0.01%, P≤0.01%, Cr 1.0-3.0%, B
4c 0.02-0.03%, Re 0.05-0.12%, all the other compositions are Fe.
The preparation method of nano alloy cast iron grinding balls, comprises the following steps:
(1) by the weight percent of constitutive material, take C, Si, Mn S, P, Cr and Fe, then add medium-frequency induction furnace melting, come out of the stove to 1400 ℃-1450 ℃, put into steel teeming ladle;
(2) by the weight percent of constitutive material, take B
4c and Re, add in steel teeming ladle, and heating makes B
4c and Re fully mix with molten steel, and 1300 ℃-1350 ℃ are poured in metal die die cavity, and 1200 ℃ go out forging dies, oil quenching, and tempering obtains finished product, controls oil quenching temperature>=850 ℃.
Embodiment 2: the nano alloy cast iron grinding balls that the present invention makes and low-chromium cast-iron grinding ball performance comparison:
| Performance index | Low-chromium cast-iron grinding ball | Nano alloy cast iron grinding balls |
| Hardness (HRC) | 45～50 | 54～58 |
| Impelling strength (J/cm 2) | ≥1.5 | ≥3.5 |
Claims (1)
1. a nano alloy cast iron grinding balls, is characterized in that the weight percent of its constitutive material is: C2.85-3.65%, Si 0.5-1.2%, Mn 0.7-1.5%, S≤0.01%, P≤0.01%, Cr 1.0-3.0%, B
4c 0.02-0.03%, Re 0.05-0.12%, all the other compositions are Fe;
Its preparation method comprises the following steps:
(1) by the weight percent of constitutive material, take C, Si, Mn S, P, Cr and Fe, then add medium-frequency induction furnace melting, come out of the stove to 1400 ℃-1450 ℃, put into steel teeming ladle;
(2) by the weight percent of constitutive material, take B
4c and Re, add in steel teeming ladle, and heating makes B
4c and Re fully mix with molten steel, and 1300 ℃-1350 ℃ are poured in metal die die cavity, and 1200 ℃ go out forging dies, oil quenching, and tempering obtains finished product, controls oil quenching temperature>=850 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110424679.3A CN102605232B (en) | 2011-12-17 | 2011-12-17 | Nanometer alloy cast iron grinding ball and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110424679.3A CN102605232B (en) | 2011-12-17 | 2011-12-17 | Nanometer alloy cast iron grinding ball and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102605232A CN102605232A (en) | 2012-07-25 |
| CN102605232B true CN102605232B (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110424679.3A Expired - Fee Related CN102605232B (en) | 2011-12-17 | 2011-12-17 | Nanometer alloy cast iron grinding ball and preparation method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041340B (en) * | 2019-12-11 | 2021-08-10 | 安徽瑞泰新材料科技有限公司 | Preparation method of nano modified grinding ball |
| CN114015928A (en) * | 2021-10-27 | 2022-02-08 | 朝阳飞马车辆设备股份公司 | Material for producing brake disc of commercial vehicle |
| CN115261544B (en) * | 2022-08-19 | 2024-02-23 | 辽宁五寰特种材料与智能装备产业技术研究院有限公司 | Preparation method of high-chromium cast iron wear-resistant material containing multi-metal phase |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914719A (en) * | 2009-12-24 | 2010-12-15 | 宁国市南洋铁球有限公司 | Rare earth new material alloy white cast iron wear-resistant microspheres |
| CN102021466A (en) * | 2009-09-23 | 2011-04-20 | 铜陵市明诚铸造有限责任公司 | Method for producing nano alloy cast iron grinding balls by using nano material |
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- 2011-12-17 CN CN201110424679.3A patent/CN102605232B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021466A (en) * | 2009-09-23 | 2011-04-20 | 铜陵市明诚铸造有限责任公司 | Method for producing nano alloy cast iron grinding balls by using nano material |
| CN101914719A (en) * | 2009-12-24 | 2010-12-15 | 宁国市南洋铁球有限公司 | Rare earth new material alloy white cast iron wear-resistant microspheres |
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| CN102605232A (en) | 2012-07-25 |
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